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5d6e853806
Sometimes to fix something you have to break it first. This get GDScript mostly working with the new tokenizer and parser but a lot of things isn't working yet. It compiles and it's usable, and that should be enough for now. Don't worry: other huge commits will come after this.
3058 lines
105 KiB
C++
3058 lines
105 KiB
C++
/*************************************************************************/
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/* gdscript_parser.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "gdscript_parser.h"
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#include "core/io/resource_loader.h"
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#include "core/math/math_defs.h"
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#include "core/os/file_access.h"
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#ifdef DEBUG_ENABLED
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#include "core/os/os.h"
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#include "core/string_builder.h"
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#endif // DEBUG_ENABLED
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static HashMap<StringName, Variant::Type> builtin_types;
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Variant::Type GDScriptParser::get_builtin_type(const StringName &p_type) {
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if (builtin_types.empty()) {
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builtin_types["bool"] = Variant::BOOL;
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builtin_types["int"] = Variant::INT;
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builtin_types["float"] = Variant::FLOAT;
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builtin_types["String"] = Variant::STRING;
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builtin_types["Vector2"] = Variant::VECTOR2;
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builtin_types["Vector2i"] = Variant::VECTOR2I;
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builtin_types["Rect2"] = Variant::RECT2;
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builtin_types["Rect2i"] = Variant::RECT2I;
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builtin_types["Transform2D"] = Variant::TRANSFORM2D;
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builtin_types["Vector3"] = Variant::VECTOR3;
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builtin_types["Vector3i"] = Variant::VECTOR3I;
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builtin_types["AABB"] = Variant::AABB;
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builtin_types["Plane"] = Variant::PLANE;
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builtin_types["Quat"] = Variant::QUAT;
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builtin_types["Basis"] = Variant::BASIS;
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builtin_types["Transform"] = Variant::TRANSFORM;
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builtin_types["Color"] = Variant::COLOR;
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builtin_types["RID"] = Variant::_RID;
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builtin_types["Object"] = Variant::OBJECT;
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builtin_types["StringName"] = Variant::STRING_NAME;
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builtin_types["NodePath"] = Variant::NODE_PATH;
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builtin_types["Dictionary"] = Variant::DICTIONARY;
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builtin_types["Callable"] = Variant::CALLABLE;
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builtin_types["Signal"] = Variant::SIGNAL;
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builtin_types["Array"] = Variant::ARRAY;
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builtin_types["PackedByteArray"] = Variant::PACKED_BYTE_ARRAY;
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builtin_types["PackedInt32Array"] = Variant::PACKED_INT32_ARRAY;
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builtin_types["PackedInt64Array"] = Variant::PACKED_INT64_ARRAY;
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builtin_types["PackedFloat32Array"] = Variant::PACKED_FLOAT32_ARRAY;
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builtin_types["PackedFloat64Array"] = Variant::PACKED_FLOAT64_ARRAY;
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builtin_types["PackedStringArray"] = Variant::PACKED_STRING_ARRAY;
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builtin_types["PackedVector2Array"] = Variant::PACKED_VECTOR2_ARRAY;
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builtin_types["PackedVector3Array"] = Variant::PACKED_VECTOR3_ARRAY;
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builtin_types["PackedColorArray"] = Variant::PACKED_COLOR_ARRAY;
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// NIL is not here, hence the -1.
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if (builtin_types.size() != Variant::VARIANT_MAX - 1) {
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ERR_PRINT("Outdated parser: amount of built-in types don't match the amount of types in Variant.");
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}
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}
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if (builtin_types.has(p_type)) {
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return builtin_types[p_type];
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}
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return Variant::VARIANT_MAX;
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}
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GDScriptFunctions::Function GDScriptParser::get_builtin_function(const StringName &p_name) {
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for (int i = 0; i < GDScriptFunctions::FUNC_MAX; i++) {
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if (p_name == GDScriptFunctions::get_func_name(GDScriptFunctions::Function(i))) {
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return GDScriptFunctions::Function(i);
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}
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}
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return GDScriptFunctions::FUNC_MAX;
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}
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GDScriptParser::GDScriptParser() {
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// Register valid annotations.
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// TODO: Should this be static?
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// TODO: Validate applicable types (e.g. a VARIABLE annotation that only applies to string variables).
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register_annotation(MethodInfo("@tool"), AnnotationInfo::SCRIPT, &GDScriptParser::tool_annotation);
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register_annotation(MethodInfo("@icon", { Variant::STRING, "icon_path" }), AnnotationInfo::SCRIPT, &GDScriptParser::icon_annotation);
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register_annotation(MethodInfo("@onready"), AnnotationInfo::VARIABLE, &GDScriptParser::onready_annotation);
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// Export annotations.
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register_annotation(MethodInfo("@export"), AnnotationInfo::VARIABLE, &GDScriptParser::export_annotations<PROPERTY_HINT_TYPE_STRING, Variant::NIL>);
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register_annotation(MethodInfo("@export_enum", { Variant::STRING, "names" }), AnnotationInfo::VARIABLE, &GDScriptParser::export_annotations<PROPERTY_HINT_ENUM, Variant::INT>, 0, true);
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register_annotation(MethodInfo("@export_file", { Variant::STRING, "filter" }), AnnotationInfo::VARIABLE, &GDScriptParser::export_annotations<PROPERTY_HINT_FILE, Variant::STRING>, 1, true);
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register_annotation(MethodInfo("@export_dir"), AnnotationInfo::VARIABLE, &GDScriptParser::export_annotations<PROPERTY_HINT_DIR, Variant::STRING>);
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register_annotation(MethodInfo("@export_global_file", { Variant::STRING, "filter" }), AnnotationInfo::VARIABLE, &GDScriptParser::export_annotations<PROPERTY_HINT_GLOBAL_FILE, Variant::STRING>, 1, true);
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register_annotation(MethodInfo("@export_global_dir"), AnnotationInfo::VARIABLE, &GDScriptParser::export_annotations<PROPERTY_HINT_GLOBAL_DIR, Variant::STRING>);
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register_annotation(MethodInfo("@export_multiline"), AnnotationInfo::VARIABLE, &GDScriptParser::export_annotations<PROPERTY_HINT_MULTILINE_TEXT, Variant::STRING>);
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register_annotation(MethodInfo("@export_placeholder"), AnnotationInfo::VARIABLE, &GDScriptParser::export_annotations<PROPERTY_HINT_PLACEHOLDER_TEXT, Variant::STRING>);
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register_annotation(MethodInfo("@export_range", { Variant::FLOAT, "min" }, { Variant::FLOAT, "max" }, { Variant::FLOAT, "step" }, { Variant::STRING, "slider1" }, { Variant::STRING, "slider2" }), AnnotationInfo::VARIABLE, &GDScriptParser::export_annotations<PROPERTY_HINT_RANGE, Variant::FLOAT>, 3);
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register_annotation(MethodInfo("@export_exp_range", { Variant::FLOAT, "min" }, { Variant::FLOAT, "max" }, { Variant::FLOAT, "step" }, { Variant::STRING, "slider1" }, { Variant::STRING, "slider2" }), AnnotationInfo::VARIABLE, &GDScriptParser::export_annotations<PROPERTY_HINT_EXP_RANGE, Variant::FLOAT>, 3);
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register_annotation(MethodInfo("@export_exp_easing", { Variant::STRING, "hint1" }, { Variant::STRING, "hint2" }), AnnotationInfo::VARIABLE, &GDScriptParser::export_annotations<PROPERTY_HINT_EXP_EASING, Variant::FLOAT>, 2);
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register_annotation(MethodInfo("@export_color_no_alpha"), AnnotationInfo::VARIABLE, &GDScriptParser::export_annotations<PROPERTY_HINT_COLOR_NO_ALPHA, Variant::COLOR>);
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register_annotation(MethodInfo("@export_node_path", { Variant::STRING, "type" }), AnnotationInfo::VARIABLE, &GDScriptParser::export_annotations<PROPERTY_HINT_NODE_PATH_VALID_TYPES, Variant::NODE_PATH>, 1, true);
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register_annotation(MethodInfo("@export_flags", { Variant::STRING, "names" }), AnnotationInfo::VARIABLE, &GDScriptParser::export_annotations<PROPERTY_HINT_FLAGS, Variant::INT>, 0, true);
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register_annotation(MethodInfo("@export_flags_2d_render"), AnnotationInfo::VARIABLE, &GDScriptParser::export_annotations<PROPERTY_HINT_LAYERS_2D_RENDER, Variant::INT>);
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register_annotation(MethodInfo("@export_flags_2d_physics"), AnnotationInfo::VARIABLE, &GDScriptParser::export_annotations<PROPERTY_HINT_LAYERS_2D_PHYSICS, Variant::INT>);
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register_annotation(MethodInfo("@export_flags_3d_render"), AnnotationInfo::VARIABLE, &GDScriptParser::export_annotations<PROPERTY_HINT_LAYERS_3D_RENDER, Variant::INT>);
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register_annotation(MethodInfo("@export_flags_3d_physics"), AnnotationInfo::VARIABLE, &GDScriptParser::export_annotations<PROPERTY_HINT_LAYERS_3D_PHYSICS, Variant::INT>);
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// Networking.
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register_annotation(MethodInfo("@remote"), AnnotationInfo::VARIABLE | AnnotationInfo::FUNCTION, &GDScriptParser::network_annotations<MultiplayerAPI::RPC_MODE_REMOTE>);
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register_annotation(MethodInfo("@master"), AnnotationInfo::VARIABLE | AnnotationInfo::FUNCTION, &GDScriptParser::network_annotations<MultiplayerAPI::RPC_MODE_MASTER>);
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register_annotation(MethodInfo("@puppet"), AnnotationInfo::VARIABLE | AnnotationInfo::FUNCTION, &GDScriptParser::network_annotations<MultiplayerAPI::RPC_MODE_PUPPET>);
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register_annotation(MethodInfo("@remotesync"), AnnotationInfo::VARIABLE | AnnotationInfo::FUNCTION, &GDScriptParser::network_annotations<MultiplayerAPI::RPC_MODE_REMOTESYNC>);
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register_annotation(MethodInfo("@mastersync"), AnnotationInfo::VARIABLE | AnnotationInfo::FUNCTION, &GDScriptParser::network_annotations<MultiplayerAPI::RPC_MODE_MASTERSYNC>);
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register_annotation(MethodInfo("@puppetsync"), AnnotationInfo::VARIABLE | AnnotationInfo::FUNCTION, &GDScriptParser::network_annotations<MultiplayerAPI::RPC_MODE_PUPPETSYNC>);
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// TODO: Warning annotations.
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}
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GDScriptParser::~GDScriptParser() {
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clear();
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}
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template <class T>
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T *GDScriptParser::alloc_node() {
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T *node = memnew(T);
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node->next = list;
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list = node;
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// TODO: Properly set positions for all nodes.
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node->start_line = previous.start_line;
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node->end_line = previous.end_line;
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node->leftmost_column = previous.leftmost_column;
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node->rightmost_column = previous.rightmost_column;
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return node;
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}
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void GDScriptParser::clear() {
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while (list != nullptr) {
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Node *element = list;
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list = list->next;
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memdelete(element);
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}
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head = nullptr;
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list = nullptr;
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_is_tool = false;
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for_completion = false;
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errors.clear();
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multiline_stack.clear();
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}
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void GDScriptParser::push_error(const String &p_message, const Node *p_origin) {
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// TODO: Improve error reporting by pointing at source code.
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// TODO: Errors might point at more than one place at once (e.g. show previous declaration).
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panic_mode = true;
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// TODO: Improve positional information.
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if (p_origin == nullptr) {
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errors.push_back({ p_message, current.start_line, current.start_column });
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} else {
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errors.push_back({ p_message, p_origin->start_line, p_origin->leftmost_column });
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}
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}
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Error GDScriptParser::parse(const String &p_source_code, const String &p_script_path, bool p_for_completion) {
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clear();
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tokenizer.set_source_code(p_source_code);
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current = tokenizer.scan();
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push_multiline(false); // Keep one for the whole parsing.
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parse_program();
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pop_multiline();
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#ifdef DEBUG_ENABLED
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if (multiline_stack.size() > 0) {
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ERR_PRINT("Parser bug: Imbalanced multiline stack.");
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}
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#endif
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if (errors.empty()) {
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return OK;
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} else {
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return ERR_PARSE_ERROR;
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}
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}
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GDScriptTokenizer::Token GDScriptParser::advance() {
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if (current.type == GDScriptTokenizer::Token::TK_EOF) {
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ERR_FAIL_COND_V_MSG(current.type == GDScriptTokenizer::Token::TK_EOF, current, "GDScript parser bug: Trying to advance past the end of stream.");
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}
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previous = current;
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current = tokenizer.scan();
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while (current.type == GDScriptTokenizer::Token::ERROR) {
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push_error(current.literal);
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current = tokenizer.scan();
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}
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return previous;
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}
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bool GDScriptParser::match(GDScriptTokenizer::Token::Type p_token_type) {
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if (!check(p_token_type)) {
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return false;
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}
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advance();
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return true;
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}
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bool GDScriptParser::check(GDScriptTokenizer::Token::Type p_token_type) {
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if (p_token_type == GDScriptTokenizer::Token::IDENTIFIER) {
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return current.is_identifier();
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}
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return current.type == p_token_type;
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}
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bool GDScriptParser::consume(GDScriptTokenizer::Token::Type p_token_type, const String &p_error_message) {
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if (match(p_token_type)) {
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return true;
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}
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push_error(p_error_message);
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return false;
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}
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bool GDScriptParser::is_at_end() {
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return check(GDScriptTokenizer::Token::TK_EOF);
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}
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void GDScriptParser::synchronize() {
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panic_mode = false;
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while (!is_at_end()) {
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if (previous.type == GDScriptTokenizer::Token::NEWLINE || previous.type == GDScriptTokenizer::Token::SEMICOLON) {
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return;
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}
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switch (current.type) {
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case GDScriptTokenizer::Token::CLASS:
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case GDScriptTokenizer::Token::FUNC:
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case GDScriptTokenizer::Token::STATIC:
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case GDScriptTokenizer::Token::VAR:
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case GDScriptTokenizer::Token::CONST:
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case GDScriptTokenizer::Token::SIGNAL:
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//case GDScriptTokenizer::Token::IF: // Can also be inside expressions.
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case GDScriptTokenizer::Token::FOR:
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case GDScriptTokenizer::Token::WHILE:
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case GDScriptTokenizer::Token::MATCH:
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case GDScriptTokenizer::Token::RETURN:
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case GDScriptTokenizer::Token::ANNOTATION:
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return;
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default:
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// Do nothing.
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break;
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}
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advance();
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}
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}
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void GDScriptParser::push_multiline(bool p_state) {
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multiline_stack.push_back(p_state);
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tokenizer.set_multiline_mode(p_state);
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if (p_state) {
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// Consume potential whitespace tokens already waiting in line.
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while (current.type == GDScriptTokenizer::Token::NEWLINE || current.type == GDScriptTokenizer::Token::INDENT || current.type == GDScriptTokenizer::Token::DEDENT) {
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current = tokenizer.scan(); // Don't call advance() here, as we don't want to change the previous token.
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}
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}
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}
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void GDScriptParser::pop_multiline() {
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ERR_FAIL_COND_MSG(multiline_stack.size() == 0, "Parser bug: trying to pop from multiline stack without available value.");
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multiline_stack.pop_back();
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tokenizer.set_multiline_mode(multiline_stack.size() > 0 ? multiline_stack.back()->get() : false);
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}
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bool GDScriptParser::is_statement_end() {
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return check(GDScriptTokenizer::Token::NEWLINE) || check(GDScriptTokenizer::Token::SEMICOLON);
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}
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void GDScriptParser::end_statement(const String &p_context) {
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bool found = false;
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while (is_statement_end()) {
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// Remove sequential newlines/semicolons.
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found = true;
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advance();
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}
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if (!found) {
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push_error(vformat(R"(Expected end of statement after %s, found "%s" instead.)", p_context, current.get_name()));
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}
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}
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void GDScriptParser::parse_program() {
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if (current.type == GDScriptTokenizer::Token::TK_EOF) {
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// Empty file.
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push_error("Source file is empty.");
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return;
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}
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head = alloc_node<ClassNode>();
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current_class = head;
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if (match(GDScriptTokenizer::Token::ANNOTATION)) {
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// Check for @tool annotation.
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AnnotationNode *annotation = parse_annotation(AnnotationInfo::SCRIPT | AnnotationInfo::CLASS_LEVEL);
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if (annotation->name == "@tool") {
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// TODO: don't allow @tool anywhere else. (Should all script annotations be the first thing?).
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_is_tool = true;
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if (previous.type != GDScriptTokenizer::Token::NEWLINE) {
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push_error(R"(Expected newline after "@tool" annotation.)");
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}
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// @tool annotation has no specific target.
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annotation->apply(this, nullptr);
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} else {
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annotation_stack.push_back(annotation);
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}
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}
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for (bool should_break = false; !should_break;) {
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// Order here doesn't matter, but there should be only one of each at most.
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switch (current.type) {
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case GDScriptTokenizer::Token::CLASS_NAME:
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if (!annotation_stack.empty()) {
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push_error(R"("class_name" should be used before annotations.)");
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}
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advance();
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if (head->identifier != nullptr) {
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push_error(R"("class_name" can only be used once.)");
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} else {
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parse_class_name();
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}
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break;
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case GDScriptTokenizer::Token::EXTENDS:
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if (!annotation_stack.empty()) {
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push_error(R"("extends" should be used before annotations.)");
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}
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advance();
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if (head->extends_used) {
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push_error(R"("extends" can only be used once.)");
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} else {
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parse_extends();
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}
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break;
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default:
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should_break = true;
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break;
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}
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if (panic_mode) {
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synchronize();
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}
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}
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if (match(GDScriptTokenizer::Token::ANNOTATION)) {
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// Check for @icon annotation.
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AnnotationNode *annotation = parse_annotation(AnnotationInfo::SCRIPT | AnnotationInfo::CLASS_LEVEL);
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if (annotation != nullptr) {
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if (annotation->name == "@icon") {
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if (previous.type != GDScriptTokenizer::Token::NEWLINE) {
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push_error(R"(Expected newline after "@icon" annotation.)");
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}
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annotation->apply(this, head);
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} else {
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annotation_stack.push_back(annotation);
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}
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}
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}
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parse_class_body();
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if (!check(GDScriptTokenizer::Token::TK_EOF)) {
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push_error("Expected end of file.");
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}
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clear_unused_annotations();
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}
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GDScriptParser::ClassNode *GDScriptParser::parse_class() {
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ClassNode *n_class = alloc_node<ClassNode>();
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ClassNode *previous_class = current_class;
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current_class = n_class;
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n_class->outer = previous_class;
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if (consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected identifier for the class name after "class".)")) {
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n_class->identifier = parse_identifier();
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}
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|
|
if (check(GDScriptTokenizer::Token::EXTENDS)) {
|
|
parse_extends();
|
|
}
|
|
|
|
consume(GDScriptTokenizer::Token::COLON, R"(Expected ":" after class declaration.)");
|
|
consume(GDScriptTokenizer::Token::NEWLINE, R"(Expected newline after class declaration.)");
|
|
|
|
if (!consume(GDScriptTokenizer::Token::INDENT, R"(Expected indented block after class declaration.)")) {
|
|
current_class = previous_class;
|
|
return n_class;
|
|
}
|
|
|
|
parse_class_body();
|
|
|
|
consume(GDScriptTokenizer::Token::DEDENT, R"(Missing unindent at the end of the class body.)");
|
|
|
|
current_class = previous_class;
|
|
return n_class;
|
|
}
|
|
|
|
void GDScriptParser::parse_class_name() {
|
|
if (consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected identifier for the global class name after "class_name".)")) {
|
|
current_class->identifier = parse_identifier();
|
|
}
|
|
|
|
// TODO: Move this to annotation
|
|
if (match(GDScriptTokenizer::Token::COMMA)) {
|
|
// Icon path.
|
|
if (consume(GDScriptTokenizer::Token::LITERAL, R"(Expected class icon path string after ",".)")) {
|
|
if (previous.literal.get_type() != Variant::STRING) {
|
|
push_error(vformat(R"(Only strings can be used for the class icon path, found "%s" instead.)", Variant::get_type_name(previous.literal.get_type())));
|
|
}
|
|
current_class->icon_path = previous.literal;
|
|
}
|
|
}
|
|
|
|
if (match(GDScriptTokenizer::Token::EXTENDS)) {
|
|
// Allow extends on the same line.
|
|
parse_extends();
|
|
} else {
|
|
end_statement("class_name statement");
|
|
}
|
|
}
|
|
|
|
void GDScriptParser::parse_extends() {
|
|
current_class->extends_used = true;
|
|
|
|
if (match(GDScriptTokenizer::Token::LITERAL)) {
|
|
if (previous.literal.get_type() != Variant::STRING) {
|
|
push_error(vformat(R"(Only strings or identifiers can be used after "extends", found "%s" instead.)", Variant::get_type_name(previous.literal.get_type())));
|
|
}
|
|
current_class->extends_path = previous.literal;
|
|
|
|
if (!match(GDScriptTokenizer::Token::PERIOD)) {
|
|
end_statement("superclass path");
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (!consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected superclass name after "extends".)")) {
|
|
return;
|
|
}
|
|
current_class->extends.push_back(previous.literal);
|
|
|
|
while (match(GDScriptTokenizer::Token::PERIOD)) {
|
|
if (!consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected superclass name after ".".)")) {
|
|
return;
|
|
}
|
|
current_class->extends.push_back(previous.literal);
|
|
}
|
|
|
|
end_statement("superclass");
|
|
}
|
|
|
|
template <class T>
|
|
void GDScriptParser::parse_class_member(T *(GDScriptParser::*p_parse_function)(), AnnotationInfo::TargetKind p_target, const String &p_member_kind) {
|
|
advance();
|
|
T *member = (this->*p_parse_function)();
|
|
if (member == nullptr) {
|
|
return;
|
|
}
|
|
// Consume annotations.
|
|
while (!annotation_stack.empty()) {
|
|
AnnotationNode *last_annotation = annotation_stack.back()->get();
|
|
if (last_annotation->applies_to(p_target)) {
|
|
last_annotation->apply(this, member);
|
|
member->annotations.push_front(last_annotation);
|
|
annotation_stack.pop_back();
|
|
} else {
|
|
push_error(vformat(R"(Annotation "%s" cannot be applied to a %s.)", last_annotation->name, p_member_kind));
|
|
clear_unused_annotations();
|
|
return;
|
|
}
|
|
}
|
|
if (member->identifier != nullptr) {
|
|
// Enums may be unnamed.
|
|
// TODO: Consider names in outer scope too, for constants and classes (and static functions?)
|
|
if (current_class->members_indices.has(member->identifier->name)) {
|
|
push_error(vformat(R"(%s "%s" has the same name as a previously declared %s.)", p_member_kind.capitalize(), member->identifier->name, current_class->get_member(member->identifier->name).get_type_name()));
|
|
} else {
|
|
current_class->add_member(member);
|
|
}
|
|
}
|
|
}
|
|
|
|
void GDScriptParser::parse_class_body() {
|
|
bool class_end = false;
|
|
while (!class_end && !is_at_end()) {
|
|
switch (current.type) {
|
|
case GDScriptTokenizer::Token::VAR:
|
|
parse_class_member(&GDScriptParser::parse_variable, AnnotationInfo::VARIABLE, "variable");
|
|
break;
|
|
case GDScriptTokenizer::Token::CONST:
|
|
parse_class_member(&GDScriptParser::parse_constant, AnnotationInfo::CONSTANT, "constant");
|
|
break;
|
|
case GDScriptTokenizer::Token::SIGNAL:
|
|
parse_class_member(&GDScriptParser::parse_signal, AnnotationInfo::SIGNAL, "signal");
|
|
break;
|
|
case GDScriptTokenizer::Token::STATIC:
|
|
case GDScriptTokenizer::Token::FUNC:
|
|
parse_class_member(&GDScriptParser::parse_function, AnnotationInfo::FUNCTION, "function");
|
|
break;
|
|
case GDScriptTokenizer::Token::CLASS:
|
|
parse_class_member(&GDScriptParser::parse_class, AnnotationInfo::CLASS, "class");
|
|
break;
|
|
case GDScriptTokenizer::Token::ENUM:
|
|
parse_class_member(&GDScriptParser::parse_enum, AnnotationInfo::NONE, "enum");
|
|
break;
|
|
case GDScriptTokenizer::Token::ANNOTATION: {
|
|
advance();
|
|
AnnotationNode *annotation = parse_annotation(AnnotationInfo::CLASS_LEVEL);
|
|
if (annotation != nullptr) {
|
|
annotation_stack.push_back(annotation);
|
|
}
|
|
break;
|
|
}
|
|
case GDScriptTokenizer::Token::PASS:
|
|
end_statement(R"("pass")");
|
|
break;
|
|
case GDScriptTokenizer::Token::DEDENT:
|
|
class_end = true;
|
|
break;
|
|
default:
|
|
push_error(vformat(R"(Unexpected "%s" in class body.)", current.get_name()));
|
|
advance();
|
|
break;
|
|
}
|
|
if (panic_mode) {
|
|
synchronize();
|
|
}
|
|
}
|
|
}
|
|
|
|
GDScriptParser::VariableNode *GDScriptParser::parse_variable() {
|
|
if (!consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected variable name after "var".)")) {
|
|
return nullptr;
|
|
}
|
|
|
|
VariableNode *variable = alloc_node<VariableNode>();
|
|
variable->identifier = parse_identifier();
|
|
|
|
if (match(GDScriptTokenizer::Token::COLON)) {
|
|
if (check((GDScriptTokenizer::Token::EQUAL))) {
|
|
// Infer type.
|
|
variable->infer_datatype = true;
|
|
} else {
|
|
// Parse type.
|
|
variable->datatype_specifier = parse_type();
|
|
}
|
|
}
|
|
|
|
if (match(GDScriptTokenizer::Token::EQUAL)) {
|
|
// Initializer.
|
|
variable->initializer = parse_expression(false);
|
|
}
|
|
|
|
end_statement("variable declaration");
|
|
|
|
variable->export_info.name = variable->identifier->name;
|
|
|
|
return variable;
|
|
}
|
|
|
|
GDScriptParser::ConstantNode *GDScriptParser::parse_constant() {
|
|
if (!consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected constant name after "const".)")) {
|
|
return nullptr;
|
|
}
|
|
|
|
ConstantNode *constant = alloc_node<ConstantNode>();
|
|
constant->identifier = parse_identifier();
|
|
|
|
if (match(GDScriptTokenizer::Token::COLON)) {
|
|
if (check((GDScriptTokenizer::Token::EQUAL))) {
|
|
// Infer type.
|
|
constant->infer_datatype = true;
|
|
} else {
|
|
// Parse type.
|
|
constant->datatype_specifier = parse_type();
|
|
}
|
|
}
|
|
|
|
if (consume(GDScriptTokenizer::Token::EQUAL, R"(Expected initializer after constant name.)")) {
|
|
// Initializer.
|
|
constant->initializer = parse_expression(false);
|
|
|
|
if (constant->initializer == nullptr) {
|
|
push_error(R"(Expected initializer expression for constant.)");
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
end_statement("constant declaration");
|
|
|
|
return constant;
|
|
}
|
|
|
|
GDScriptParser::ParameterNode *GDScriptParser::parse_parameter() {
|
|
if (!consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected parameter name.)")) {
|
|
return nullptr;
|
|
}
|
|
|
|
ParameterNode *parameter = alloc_node<ParameterNode>();
|
|
parameter->identifier = parse_identifier();
|
|
|
|
if (match(GDScriptTokenizer::Token::COLON)) {
|
|
if (check((GDScriptTokenizer::Token::EQUAL))) {
|
|
// Infer type.
|
|
parameter->infer_datatype = true;
|
|
} else {
|
|
// Parse type.
|
|
parameter->datatype_specifier = parse_type();
|
|
}
|
|
}
|
|
|
|
if (match(GDScriptTokenizer::Token::EQUAL)) {
|
|
// Default value.
|
|
parameter->default_value = parse_expression(false);
|
|
}
|
|
|
|
return parameter;
|
|
}
|
|
|
|
GDScriptParser::SignalNode *GDScriptParser::parse_signal() {
|
|
if (!consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected signal name after "signal".)")) {
|
|
return nullptr;
|
|
}
|
|
|
|
SignalNode *signal = alloc_node<SignalNode>();
|
|
signal->identifier = parse_identifier();
|
|
|
|
if (match(GDScriptTokenizer::Token::PARENTHESIS_OPEN)) {
|
|
while (!check(GDScriptTokenizer::Token::PARENTHESIS_CLOSE) && !is_at_end()) {
|
|
ParameterNode *parameter = parse_parameter();
|
|
if (parameter == nullptr) {
|
|
break;
|
|
}
|
|
if (parameter->default_value != nullptr) {
|
|
push_error(R"(Signal parameters cannot have a default value.)");
|
|
}
|
|
if (signal->parameters_indices.has(parameter->identifier->name)) {
|
|
push_error(vformat(R"(Parameter with name "%s" was already declared for this signal.)", parameter->identifier->name));
|
|
} else {
|
|
signal->parameters_indices[parameter->identifier->name] = signal->parameters.size();
|
|
signal->parameters.push_back(parameter);
|
|
}
|
|
}
|
|
consume(GDScriptTokenizer::Token::PARENTHESIS_CLOSE, R"*(Expected closing ")" after signal parameters.)*");
|
|
}
|
|
|
|
end_statement("signal declaration");
|
|
|
|
return signal;
|
|
}
|
|
|
|
GDScriptParser::EnumNode *GDScriptParser::parse_enum() {
|
|
EnumNode *enum_node = alloc_node<EnumNode>();
|
|
bool named = false;
|
|
|
|
if (check(GDScriptTokenizer::Token::IDENTIFIER)) {
|
|
advance();
|
|
enum_node->identifier = parse_identifier();
|
|
named = true;
|
|
}
|
|
|
|
push_multiline(true);
|
|
consume(GDScriptTokenizer::Token::BRACE_OPEN, vformat(R"(Expected "{" after %s.)", named ? "enum name" : R"("enum")"));
|
|
|
|
int current_value = 0;
|
|
|
|
do {
|
|
if (check(GDScriptTokenizer::Token::BRACE_CLOSE)) {
|
|
break; // Allow trailing comma.
|
|
}
|
|
if (consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected identifer for enum key.)")) {
|
|
EnumNode::Value item;
|
|
item.identifier = parse_identifier();
|
|
bool found = false;
|
|
|
|
if (!named) {
|
|
// TODO: Abstract this recursive member check.
|
|
ClassNode *parent = current_class;
|
|
while (parent != nullptr) {
|
|
if (parent->members_indices.has(item.identifier->name)) {
|
|
push_error(vformat(R"(Name "%s" is already used as a class %s.)", item.identifier->name, parent->get_member(item.identifier->name).get_type_name()));
|
|
found = true;
|
|
break;
|
|
}
|
|
parent = parent->outer;
|
|
}
|
|
}
|
|
|
|
if (match(GDScriptTokenizer::Token::EQUAL)) {
|
|
if (consume(GDScriptTokenizer::Token::LITERAL, R"(Expected integer value after "=".)")) {
|
|
item.custom_value = parse_literal();
|
|
|
|
if (item.custom_value->value.get_type() != Variant::INT) {
|
|
push_error(R"(Expected integer value after "=".)");
|
|
item.custom_value = nullptr;
|
|
} else {
|
|
current_value = item.custom_value->value;
|
|
}
|
|
}
|
|
}
|
|
item.value = current_value++;
|
|
enum_node->values.push_back(item);
|
|
if (!found) {
|
|
// Add as member of current class.
|
|
current_class->add_member(item);
|
|
}
|
|
}
|
|
} while (match(GDScriptTokenizer::Token::COMMA));
|
|
|
|
pop_multiline();
|
|
consume(GDScriptTokenizer::Token::BRACE_CLOSE, R"(Expected closing "}" for enum.)");
|
|
|
|
end_statement("enum");
|
|
|
|
return enum_node;
|
|
}
|
|
|
|
GDScriptParser::FunctionNode *GDScriptParser::parse_function() {
|
|
bool _static = false;
|
|
if (previous.type == GDScriptTokenizer::Token::STATIC) {
|
|
// TODO: Improve message if user uses "static" with "var" or "const"
|
|
if (!consume(GDScriptTokenizer::Token::FUNC, R"(Expected "func" after "static".)")) {
|
|
return nullptr;
|
|
}
|
|
_static = true;
|
|
}
|
|
|
|
if (!consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected function name after "func".)")) {
|
|
return nullptr;
|
|
}
|
|
|
|
FunctionNode *function = alloc_node<FunctionNode>();
|
|
FunctionNode *previous_function = current_function;
|
|
current_function = function;
|
|
|
|
function->identifier = parse_identifier();
|
|
function->is_static = _static;
|
|
|
|
push_multiline(true);
|
|
consume(GDScriptTokenizer::Token::PARENTHESIS_OPEN, R"(Expected opening "(" after function name.)");
|
|
|
|
if (!check(GDScriptTokenizer::Token::PARENTHESIS_CLOSE) && !is_at_end()) {
|
|
bool default_used = false;
|
|
do {
|
|
if (check(GDScriptTokenizer::Token::PARENTHESIS_CLOSE)) {
|
|
// Allow for trailing comma.
|
|
break;
|
|
}
|
|
ParameterNode *parameter = parse_parameter();
|
|
if (parameter == nullptr) {
|
|
break;
|
|
}
|
|
if (parameter->default_value != nullptr) {
|
|
default_used = true;
|
|
} else {
|
|
if (default_used) {
|
|
push_error("Cannot have a mandatory parameters after optional parameters.");
|
|
continue;
|
|
}
|
|
}
|
|
if (function->parameters_indices.has(parameter->identifier->name)) {
|
|
push_error(vformat(R"(Parameter with name "%s" was already declared for this function.)", parameter->identifier->name));
|
|
} else {
|
|
function->parameters_indices[parameter->identifier->name] = function->parameters.size();
|
|
function->parameters.push_back(parameter);
|
|
}
|
|
} while (match(GDScriptTokenizer::Token::COMMA));
|
|
}
|
|
|
|
pop_multiline();
|
|
consume(GDScriptTokenizer::Token::PARENTHESIS_CLOSE, R"*(Expected closing ")" after function parameters.)*");
|
|
|
|
if (match(GDScriptTokenizer::Token::FORWARD_ARROW)) {
|
|
function->return_type = parse_type(true);
|
|
}
|
|
|
|
// TODO: Improve token consumption so it synchronizes to a statement boundary. This way we can get into the function body with unrecognized tokens.
|
|
consume(GDScriptTokenizer::Token::COLON, R"(Expected ":" after function declaration.)");
|
|
|
|
function->body = parse_suite("function declaration");
|
|
|
|
current_function = previous_function;
|
|
return function;
|
|
}
|
|
|
|
GDScriptParser::AnnotationNode *GDScriptParser::parse_annotation(uint32_t p_valid_targets) {
|
|
AnnotationNode *annotation = alloc_node<AnnotationNode>();
|
|
|
|
annotation->name = previous.literal;
|
|
|
|
bool valid = true;
|
|
|
|
if (!valid_annotations.has(annotation->name)) {
|
|
push_error(vformat(R"(Unrecognized annotation: "%s".)", annotation->name));
|
|
valid = false;
|
|
}
|
|
|
|
annotation->info = &valid_annotations[annotation->name];
|
|
|
|
if (!annotation->applies_to(p_valid_targets)) {
|
|
push_error(vformat(R"(Annotation "%s" is not allowed in this level.)", annotation->name));
|
|
valid = false;
|
|
}
|
|
|
|
if (match(GDScriptTokenizer::Token::PARENTHESIS_OPEN)) {
|
|
// Arguments.
|
|
if (!check(GDScriptTokenizer::Token::PARENTHESIS_CLOSE) && !is_at_end()) {
|
|
do {
|
|
ExpressionNode *argument = parse_expression(false);
|
|
if (argument == nullptr) {
|
|
valid = false;
|
|
continue;
|
|
}
|
|
annotation->arguments.push_back(argument);
|
|
} while (match(GDScriptTokenizer::Token::COMMA));
|
|
|
|
consume(GDScriptTokenizer::Token::PARENTHESIS_CLOSE, R"*(Expected ")" after annotation arguments.)*");
|
|
}
|
|
}
|
|
|
|
match(GDScriptTokenizer::Token::NEWLINE); // Newline after annotation is optional.
|
|
|
|
if (valid) {
|
|
valid = validate_annotation_arguments(annotation);
|
|
}
|
|
|
|
return valid ? annotation : nullptr;
|
|
}
|
|
|
|
void GDScriptParser::clear_unused_annotations() {
|
|
for (const List<AnnotationNode *>::Element *E = annotation_stack.front(); E != nullptr; E = E->next()) {
|
|
AnnotationNode *annotation = E->get();
|
|
push_error(vformat(R"(Annotation "%s" does not precedes a valid target, so it will have no effect.)", annotation->name));
|
|
}
|
|
|
|
annotation_stack.clear();
|
|
}
|
|
|
|
bool GDScriptParser::register_annotation(const MethodInfo &p_info, uint32_t p_target_kinds, AnnotationAction p_apply, int p_optional_arguments, bool p_is_vararg) {
|
|
ERR_FAIL_COND_V_MSG(valid_annotations.has(p_info.name), false, vformat(R"(Annotation "%s" already registered.)", p_info.name));
|
|
|
|
AnnotationInfo new_annotation;
|
|
new_annotation.info = p_info;
|
|
new_annotation.info.default_arguments.resize(p_optional_arguments);
|
|
if (p_is_vararg) {
|
|
new_annotation.info.flags |= METHOD_FLAG_VARARG;
|
|
}
|
|
new_annotation.apply = p_apply;
|
|
new_annotation.target_kind = p_target_kinds;
|
|
|
|
valid_annotations[p_info.name] = new_annotation;
|
|
return true;
|
|
}
|
|
|
|
GDScriptParser::SuiteNode *GDScriptParser::parse_suite(const String &p_context) {
|
|
SuiteNode *suite = alloc_node<SuiteNode>();
|
|
suite->parent_block = current_suite;
|
|
current_suite = suite;
|
|
|
|
bool multiline = false;
|
|
|
|
if (check(GDScriptTokenizer::Token::NEWLINE)) {
|
|
multiline = true;
|
|
}
|
|
|
|
if (multiline) {
|
|
consume(GDScriptTokenizer::Token::NEWLINE, vformat(R"(Expected newline after %s.)", p_context));
|
|
|
|
if (!consume(GDScriptTokenizer::Token::INDENT, vformat(R"(Expected indented block after %s.)", p_context))) {
|
|
current_suite = suite->parent_block;
|
|
return suite;
|
|
}
|
|
}
|
|
|
|
do {
|
|
Node *statement = parse_statement();
|
|
if (statement == nullptr) {
|
|
continue;
|
|
}
|
|
suite->statements.push_back(statement);
|
|
|
|
// Register locals.
|
|
switch (statement->type) {
|
|
case Node::VARIABLE: {
|
|
VariableNode *variable = static_cast<VariableNode *>(statement);
|
|
const SuiteNode::Local &local = current_suite->get_local(variable->identifier->name);
|
|
if (local.type != SuiteNode::Local::UNDEFINED) {
|
|
String name;
|
|
if (local.type == SuiteNode::Local::CONSTANT) {
|
|
name = "constant";
|
|
} else {
|
|
name = "variable";
|
|
}
|
|
push_error(vformat(R"(There is already a %s named "%s" declared in this scope.)", name, variable->identifier->name));
|
|
}
|
|
current_suite->add_local(variable);
|
|
break;
|
|
}
|
|
case Node::CONSTANT: {
|
|
ConstantNode *constant = static_cast<ConstantNode *>(statement);
|
|
const SuiteNode::Local &local = current_suite->get_local(constant->identifier->name);
|
|
if (local.type != SuiteNode::Local::UNDEFINED) {
|
|
String name;
|
|
if (local.type == SuiteNode::Local::CONSTANT) {
|
|
name = "constant";
|
|
} else {
|
|
name = "variable";
|
|
}
|
|
push_error(vformat(R"(There is already a %s named "%s" declared in this scope.)", name, constant->identifier->name));
|
|
}
|
|
current_suite->add_local(constant);
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
} while (multiline && !check(GDScriptTokenizer::Token::DEDENT) && !is_at_end());
|
|
|
|
if (multiline) {
|
|
consume(GDScriptTokenizer::Token::DEDENT, vformat(R"(Missing unindent at the end of %s.)", p_context));
|
|
}
|
|
|
|
current_suite = suite->parent_block;
|
|
return suite;
|
|
}
|
|
|
|
GDScriptParser::Node *GDScriptParser::parse_statement() {
|
|
Node *result = nullptr;
|
|
switch (current.type) {
|
|
case GDScriptTokenizer::Token::PASS:
|
|
advance();
|
|
result = alloc_node<PassNode>();
|
|
end_statement(R"("pass")");
|
|
break;
|
|
case GDScriptTokenizer::Token::VAR:
|
|
advance();
|
|
result = parse_variable();
|
|
break;
|
|
case GDScriptTokenizer::Token::CONST:
|
|
advance();
|
|
result = parse_constant();
|
|
break;
|
|
case GDScriptTokenizer::Token::IF:
|
|
advance();
|
|
result = parse_if();
|
|
break;
|
|
case GDScriptTokenizer::Token::FOR:
|
|
advance();
|
|
result = parse_for();
|
|
break;
|
|
case GDScriptTokenizer::Token::WHILE:
|
|
advance();
|
|
result = parse_while();
|
|
break;
|
|
case GDScriptTokenizer::Token::MATCH:
|
|
advance();
|
|
result = parse_match();
|
|
break;
|
|
case GDScriptTokenizer::Token::BREAK:
|
|
advance();
|
|
result = parse_break();
|
|
break;
|
|
case GDScriptTokenizer::Token::CONTINUE:
|
|
advance();
|
|
result = parse_continue();
|
|
break;
|
|
case GDScriptTokenizer::Token::RETURN: {
|
|
advance();
|
|
ReturnNode *n_return = alloc_node<ReturnNode>();
|
|
if (!is_statement_end()) {
|
|
n_return->return_value = parse_expression(false);
|
|
}
|
|
result = n_return;
|
|
end_statement("return statement");
|
|
break;
|
|
}
|
|
case GDScriptTokenizer::Token::BREAKPOINT:
|
|
advance();
|
|
result = alloc_node<BreakpointNode>();
|
|
end_statement(R"("breakpoint")");
|
|
break;
|
|
case GDScriptTokenizer::Token::ASSERT:
|
|
advance();
|
|
result = parse_assert();
|
|
break;
|
|
case GDScriptTokenizer::Token::ANNOTATION: {
|
|
advance();
|
|
AnnotationNode *annotation = parse_annotation(AnnotationInfo::STATEMENT);
|
|
if (annotation != nullptr) {
|
|
annotation_stack.push_back(annotation);
|
|
}
|
|
break;
|
|
}
|
|
default: {
|
|
// Expression statement.
|
|
ExpressionNode *expression = parse_expression(true); // Allow assignment here.
|
|
end_statement("expression");
|
|
result = expression;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (panic_mode) {
|
|
synchronize();
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
GDScriptParser::AssertNode *GDScriptParser::parse_assert() {
|
|
// TODO: Add assert message.
|
|
AssertNode *assert = alloc_node<AssertNode>();
|
|
|
|
consume(GDScriptTokenizer::Token::PARENTHESIS_OPEN, R"(Expected "(" after "assert".)");
|
|
assert->condition = parse_expression(false);
|
|
if (assert->condition == nullptr) {
|
|
push_error("Expected expression to assert.");
|
|
return nullptr;
|
|
}
|
|
|
|
if (match(GDScriptTokenizer::Token::COMMA)) {
|
|
// Error message.
|
|
if (consume(GDScriptTokenizer::Token::LITERAL, R"(Expected error message for assert after ",".)")) {
|
|
assert->message = parse_literal();
|
|
if (assert->message->value.get_type() != Variant::STRING) {
|
|
push_error(R"(Expected string for assert error message.)");
|
|
}
|
|
} else {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
consume(GDScriptTokenizer::Token::PARENTHESIS_CLOSE, R"*(Expected ")" after assert expression.)*");
|
|
|
|
end_statement(R"("assert")");
|
|
|
|
return assert;
|
|
}
|
|
|
|
GDScriptParser::BreakNode *GDScriptParser::parse_break() {
|
|
if (!can_break) {
|
|
push_error(R"(Cannot use "break" outside of a loop.)");
|
|
}
|
|
end_statement(R"("break")");
|
|
return alloc_node<BreakNode>();
|
|
}
|
|
|
|
GDScriptParser::ContinueNode *GDScriptParser::parse_continue() {
|
|
if (!can_continue) {
|
|
push_error(R"(Cannot use "continue" outside of a loop or pattern matching block.)");
|
|
}
|
|
end_statement(R"("continue")");
|
|
return alloc_node<ContinueNode>();
|
|
}
|
|
|
|
GDScriptParser::ForNode *GDScriptParser::parse_for() {
|
|
ForNode *n_for = alloc_node<ForNode>();
|
|
|
|
if (consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected loop variable name after "for".)")) {
|
|
n_for->variable = parse_identifier();
|
|
}
|
|
|
|
consume(GDScriptTokenizer::Token::IN, R"(Expected "in" after "for" variable name.)");
|
|
|
|
n_for->list = parse_expression(false);
|
|
|
|
consume(GDScriptTokenizer::Token::COLON, R"(Expected ":" after "for" condition.)");
|
|
|
|
// Save break/continue state.
|
|
bool could_break = can_break;
|
|
bool could_continue = can_continue;
|
|
|
|
// Allow break/continue.
|
|
can_break = true;
|
|
can_continue = true;
|
|
|
|
n_for->loop = parse_suite(R"("for" block)");
|
|
|
|
// Reset break/continue state.
|
|
can_break = could_break;
|
|
can_continue = could_continue;
|
|
|
|
return n_for;
|
|
}
|
|
|
|
GDScriptParser::IfNode *GDScriptParser::parse_if(const String &p_token) {
|
|
IfNode *n_if = alloc_node<IfNode>();
|
|
|
|
n_if->condition = parse_expression(false);
|
|
if (n_if->condition == nullptr) {
|
|
push_error(vformat(R"(Expected conditional expression after "%s".)", p_token));
|
|
}
|
|
|
|
consume(GDScriptTokenizer::Token::COLON, vformat(R"(Expected ":" after "%s" condition.)", p_token));
|
|
|
|
n_if->true_block = parse_suite(vformat(R"("%s" block)", p_token));
|
|
|
|
if (match(GDScriptTokenizer::Token::ELIF)) {
|
|
IfNode *elif = parse_if("elif");
|
|
|
|
SuiteNode *else_block = alloc_node<SuiteNode>();
|
|
else_block->statements.push_back(elif);
|
|
n_if->false_block = else_block;
|
|
} else if (match(GDScriptTokenizer::Token::ELSE)) {
|
|
consume(GDScriptTokenizer::Token::COLON, R"(Expected ":" after "else".)");
|
|
n_if->false_block = parse_suite(R"("else" block)");
|
|
}
|
|
|
|
return n_if;
|
|
}
|
|
|
|
GDScriptParser::MatchNode *GDScriptParser::parse_match() {
|
|
MatchNode *match = alloc_node<MatchNode>();
|
|
|
|
match->test = parse_expression(false);
|
|
if (match->test == nullptr) {
|
|
push_error(R"(Expected expression to test after "match".)");
|
|
}
|
|
|
|
consume(GDScriptTokenizer::Token::COLON, R"(Expected ":" after "match" expression.)");
|
|
consume(GDScriptTokenizer::Token::NEWLINE, R"(Expected a newline after "match" statement.)");
|
|
|
|
if (!consume(GDScriptTokenizer::Token::INDENT, R"(Expected an indented block after "match" statement.)")) {
|
|
return match;
|
|
}
|
|
|
|
while (!check(GDScriptTokenizer::Token::DEDENT) && !is_at_end()) {
|
|
MatchBranchNode *branch = parse_match_branch();
|
|
if (branch == nullptr) {
|
|
continue;
|
|
}
|
|
match->branches.push_back(branch);
|
|
}
|
|
|
|
consume(GDScriptTokenizer::Token::DEDENT, R"(Expected an indented block after "match" statement.)");
|
|
|
|
return match;
|
|
}
|
|
|
|
GDScriptParser::MatchBranchNode *GDScriptParser::parse_match_branch() {
|
|
MatchBranchNode *branch = alloc_node<MatchBranchNode>();
|
|
|
|
bool has_bind = false;
|
|
|
|
do {
|
|
PatternNode *pattern = parse_match_pattern();
|
|
if (pattern == nullptr) {
|
|
continue;
|
|
}
|
|
if (pattern->pattern_type == PatternNode::PT_BIND) {
|
|
has_bind = true;
|
|
}
|
|
if (branch->patterns.size() > 0 && has_bind) {
|
|
push_error(R"(Cannot use a variable bind with multiple patterns.)");
|
|
}
|
|
if (pattern->pattern_type == PatternNode::PT_REST) {
|
|
push_error(R"(Rest pattern can only be used inside array and dictionary patterns.)");
|
|
}
|
|
branch->patterns.push_back(pattern);
|
|
} while (match(GDScriptTokenizer::Token::COMMA));
|
|
|
|
if (branch->patterns.empty()) {
|
|
push_error(R"(No pattern found for "match" branch.)");
|
|
}
|
|
|
|
consume(GDScriptTokenizer::Token::COLON, R"(Expected ":" after "match" patterns.)");
|
|
|
|
// Save continue state.
|
|
bool could_continue = can_continue;
|
|
// Allow continue for match.
|
|
can_continue = true;
|
|
|
|
branch->block = parse_suite("match pattern block");
|
|
|
|
// Restore continue state.
|
|
can_continue = could_continue;
|
|
|
|
return branch;
|
|
}
|
|
|
|
GDScriptParser::PatternNode *GDScriptParser::parse_match_pattern() {
|
|
PatternNode *pattern = alloc_node<PatternNode>();
|
|
|
|
switch (current.type) {
|
|
case GDScriptTokenizer::Token::LITERAL:
|
|
advance();
|
|
pattern->pattern_type = PatternNode::PT_LITERAL;
|
|
pattern->literal = parse_literal();
|
|
if (pattern->literal == nullptr) {
|
|
// Error happened.
|
|
return nullptr;
|
|
}
|
|
break;
|
|
case GDScriptTokenizer::Token::VAR:
|
|
// Bind.
|
|
advance();
|
|
if (!consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected bind name after "var".)")) {
|
|
return nullptr;
|
|
}
|
|
pattern->pattern_type = PatternNode::PT_BIND;
|
|
pattern->bind = parse_identifier();
|
|
break;
|
|
case GDScriptTokenizer::Token::UNDERSCORE:
|
|
// Wildcard.
|
|
advance();
|
|
pattern->pattern_type = PatternNode::PT_WILDCARD;
|
|
break;
|
|
case GDScriptTokenizer::Token::PERIOD_PERIOD:
|
|
// Rest.
|
|
advance();
|
|
pattern->pattern_type = PatternNode::PT_REST;
|
|
break;
|
|
case GDScriptTokenizer::Token::BRACKET_OPEN: {
|
|
// Array.
|
|
advance();
|
|
pattern->pattern_type = PatternNode::PT_ARRAY;
|
|
|
|
if (!check(GDScriptTokenizer::Token::BRACKET_CLOSE)) {
|
|
do {
|
|
PatternNode *sub_pattern = parse_match_pattern();
|
|
if (sub_pattern == nullptr) {
|
|
continue;
|
|
}
|
|
if (pattern->rest_used) {
|
|
push_error(R"(The ".." pattern must be the last element in the pattern array.)");
|
|
} else if (sub_pattern->pattern_type == PatternNode::PT_REST) {
|
|
pattern->rest_used = true;
|
|
}
|
|
pattern->array.push_back(sub_pattern);
|
|
} while (match(GDScriptTokenizer::Token::COMMA));
|
|
}
|
|
consume(GDScriptTokenizer::Token::BRACKET_CLOSE, R"(Expected "]" to close the array pattern.)");
|
|
break;
|
|
}
|
|
case GDScriptTokenizer::Token::BRACE_OPEN: {
|
|
// Dictionary.
|
|
advance();
|
|
pattern->pattern_type = PatternNode::PT_DICTIONARY;
|
|
|
|
if (!check(GDScriptTokenizer::Token::BRACE_CLOSE) && !is_at_end()) {
|
|
do {
|
|
if (match(GDScriptTokenizer::Token::PERIOD_PERIOD)) {
|
|
// Rest.
|
|
if (pattern->rest_used) {
|
|
push_error(R"(The ".." pattern must be the last element in the pattern dictionary.)");
|
|
} else {
|
|
PatternNode *sub_pattern = alloc_node<PatternNode>();
|
|
sub_pattern->pattern_type = PatternNode::PT_REST;
|
|
pattern->dictionary.push_back({ nullptr, sub_pattern });
|
|
pattern->rest_used = true;
|
|
}
|
|
} else {
|
|
ExpressionNode *key = parse_expression(false);
|
|
if (key == nullptr) {
|
|
push_error(R"(Expected expression as key for dictionary pattern.)");
|
|
}
|
|
if (consume(GDScriptTokenizer::Token::COLON, R"(Expected ":" after dictionary pattern key)")) {
|
|
// Value pattern.
|
|
PatternNode *sub_pattern = parse_match_pattern();
|
|
if (sub_pattern == nullptr) {
|
|
continue;
|
|
}
|
|
if (pattern->rest_used) {
|
|
push_error(R"(The ".." pattern must be the last element in the pattern dictionary.)");
|
|
} else if (sub_pattern->pattern_type == PatternNode::PT_REST) {
|
|
push_error(R"(The ".." pattern cannot be used as a value.)");
|
|
} else {
|
|
pattern->dictionary.push_back({ key, sub_pattern });
|
|
}
|
|
}
|
|
}
|
|
} while (match(GDScriptTokenizer::Token::COMMA));
|
|
}
|
|
consume(GDScriptTokenizer::Token::BRACE_CLOSE, R"(Expected "}" to close the dictionary pattern.)");
|
|
break;
|
|
}
|
|
default: {
|
|
// Expression.
|
|
ExpressionNode *expression = parse_expression(false);
|
|
if (expression == nullptr) {
|
|
push_error(R"(Expected expression for match pattern.)");
|
|
} else {
|
|
pattern->pattern_type = PatternNode::PT_EXPRESSION;
|
|
pattern->expression = expression;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
return pattern;
|
|
}
|
|
|
|
GDScriptParser::WhileNode *GDScriptParser::parse_while() {
|
|
WhileNode *n_while = alloc_node<WhileNode>();
|
|
|
|
n_while->condition = parse_expression(false);
|
|
if (n_while->condition == nullptr) {
|
|
push_error(R"(Expected conditional expression after "while".)");
|
|
}
|
|
|
|
consume(GDScriptTokenizer::Token::COLON, R"(Expected ":" after "while" condition.)");
|
|
|
|
// Save break/continue state.
|
|
bool could_break = can_break;
|
|
bool could_continue = can_continue;
|
|
|
|
// Allow break/continue.
|
|
can_break = true;
|
|
can_continue = true;
|
|
|
|
n_while->loop = parse_suite(R"("while" block)");
|
|
|
|
// Reset break/continue state.
|
|
can_break = could_break;
|
|
can_continue = could_continue;
|
|
|
|
return n_while;
|
|
}
|
|
|
|
GDScriptParser::ExpressionNode *GDScriptParser::parse_precedence(Precedence p_precedence, bool p_can_assign, bool p_stop_on_assign) {
|
|
// Switch multiline mode on for grouping tokens.
|
|
// Do this early to avoid the tokenizer generating whitespace tokens.
|
|
switch (current.type) {
|
|
case GDScriptTokenizer::Token::PARENTHESIS_OPEN:
|
|
case GDScriptTokenizer::Token::BRACE_OPEN:
|
|
case GDScriptTokenizer::Token::BRACKET_OPEN:
|
|
push_multiline(true);
|
|
break;
|
|
default:
|
|
break; // Nothing to do.
|
|
}
|
|
|
|
GDScriptTokenizer::Token token = advance();
|
|
ParseFunction prefix_rule = get_rule(token.type)->prefix;
|
|
|
|
if (prefix_rule == nullptr) {
|
|
// Expected expression. Let the caller give the proper error message.
|
|
return nullptr;
|
|
}
|
|
|
|
ExpressionNode *previous_operand = (this->*prefix_rule)(nullptr, p_can_assign);
|
|
|
|
while (p_precedence <= get_rule(current.type)->precedence) {
|
|
if (p_stop_on_assign && current.type == GDScriptTokenizer::Token::EQUAL) {
|
|
return previous_operand;
|
|
}
|
|
// Also switch multiline mode on here for infix operators.
|
|
switch (current.type) {
|
|
// case GDScriptTokenizer::Token::BRACE_OPEN: // Not an infix operator.
|
|
case GDScriptTokenizer::Token::PARENTHESIS_OPEN:
|
|
case GDScriptTokenizer::Token::BRACKET_OPEN:
|
|
push_multiline(true);
|
|
break;
|
|
default:
|
|
break; // Nothing to do.
|
|
}
|
|
token = advance();
|
|
ParseFunction infix_rule = get_rule(token.type)->infix;
|
|
previous_operand = (this->*infix_rule)(previous_operand, p_can_assign);
|
|
}
|
|
|
|
return previous_operand;
|
|
}
|
|
|
|
GDScriptParser::ExpressionNode *GDScriptParser::parse_expression(bool p_can_assign, bool p_stop_on_assign) {
|
|
return parse_precedence(PREC_ASSIGNMENT, p_can_assign, p_stop_on_assign);
|
|
}
|
|
|
|
GDScriptParser::IdentifierNode *GDScriptParser::parse_identifier() {
|
|
return static_cast<IdentifierNode *>(parse_identifier(nullptr, false));
|
|
}
|
|
|
|
GDScriptParser::ExpressionNode *GDScriptParser::parse_identifier(ExpressionNode *p_previous_operand, bool p_can_assign) {
|
|
if (!previous.is_identifier()) {
|
|
ERR_FAIL_V_MSG(nullptr, "Parser bug: parsing literal node without literal token.");
|
|
}
|
|
IdentifierNode *identifier = alloc_node<IdentifierNode>();
|
|
identifier->name = previous.literal;
|
|
return identifier;
|
|
}
|
|
|
|
GDScriptParser::LiteralNode *GDScriptParser::parse_literal() {
|
|
return static_cast<LiteralNode *>(parse_literal(nullptr, false));
|
|
}
|
|
|
|
GDScriptParser::ExpressionNode *GDScriptParser::parse_literal(ExpressionNode *p_previous_operand, bool p_can_assign) {
|
|
if (previous.type != GDScriptTokenizer::Token::LITERAL) {
|
|
push_error("Parser bug: parsing literal node without literal token.");
|
|
ERR_FAIL_V_MSG(nullptr, "Parser bug: parsing literal node without literal token.");
|
|
}
|
|
|
|
LiteralNode *literal = alloc_node<LiteralNode>();
|
|
literal->value = previous.literal;
|
|
return literal;
|
|
}
|
|
|
|
GDScriptParser::ExpressionNode *GDScriptParser::parse_self(ExpressionNode *p_previous_operand, bool p_can_assign) {
|
|
// FIXME: Don't allow "self" in a static context.
|
|
SelfNode *self = alloc_node<SelfNode>();
|
|
self->current_class = current_class;
|
|
return self;
|
|
}
|
|
|
|
GDScriptParser::ExpressionNode *GDScriptParser::parse_builtin_constant(ExpressionNode *p_previous_operand, bool p_can_assign) {
|
|
GDScriptTokenizer::Token::Type op_type = previous.type;
|
|
LiteralNode *constant = alloc_node<LiteralNode>();
|
|
|
|
switch (op_type) {
|
|
case GDScriptTokenizer::Token::CONST_PI:
|
|
constant->value = Math_PI;
|
|
break;
|
|
case GDScriptTokenizer::Token::CONST_TAU:
|
|
constant->value = Math_TAU;
|
|
break;
|
|
case GDScriptTokenizer::Token::CONST_INF:
|
|
constant->value = Math_INF;
|
|
break;
|
|
case GDScriptTokenizer::Token::CONST_NAN:
|
|
constant->value = Math_NAN;
|
|
break;
|
|
default:
|
|
return nullptr; // Unreachable.
|
|
}
|
|
|
|
return constant;
|
|
}
|
|
|
|
GDScriptParser::ExpressionNode *GDScriptParser::parse_unary_operator(ExpressionNode *p_previous_operand, bool p_can_assign) {
|
|
GDScriptTokenizer::Token::Type op_type = previous.type;
|
|
UnaryOpNode *operation = alloc_node<UnaryOpNode>();
|
|
|
|
switch (op_type) {
|
|
case GDScriptTokenizer::Token::MINUS:
|
|
operation->operation = UnaryOpNode::OP_NEGATIVE;
|
|
operation->operand = parse_precedence(PREC_SIGN, false);
|
|
break;
|
|
case GDScriptTokenizer::Token::PLUS:
|
|
operation->operation = UnaryOpNode::OP_POSITIVE;
|
|
operation->operand = parse_precedence(PREC_SIGN, false);
|
|
break;
|
|
case GDScriptTokenizer::Token::TILDE:
|
|
operation->operation = UnaryOpNode::OP_COMPLEMENT;
|
|
operation->operand = parse_precedence(PREC_BIT_NOT, false);
|
|
break;
|
|
case GDScriptTokenizer::Token::NOT:
|
|
case GDScriptTokenizer::Token::BANG:
|
|
operation->operation = UnaryOpNode::OP_LOGIC_NOT;
|
|
operation->operand = parse_precedence(PREC_LOGIC_NOT, false);
|
|
break;
|
|
default:
|
|
return nullptr; // Unreachable.
|
|
}
|
|
|
|
return operation;
|
|
}
|
|
|
|
GDScriptParser::ExpressionNode *GDScriptParser::parse_binary_operator(ExpressionNode *p_previous_operand, bool p_can_assign) {
|
|
GDScriptTokenizer::Token op = previous;
|
|
BinaryOpNode *operation = alloc_node<BinaryOpNode>();
|
|
|
|
Precedence precedence = (Precedence)(get_rule(op.type)->precedence + 1);
|
|
operation->left_operand = p_previous_operand;
|
|
operation->right_operand = parse_precedence(precedence, false);
|
|
|
|
if (operation->right_operand == nullptr) {
|
|
push_error(vformat(R"(Expected expression after "%s" operator.")", op.get_name()));
|
|
}
|
|
|
|
switch (op.type) {
|
|
case GDScriptTokenizer::Token::PLUS:
|
|
operation->operation = BinaryOpNode::OP_ADDITION;
|
|
break;
|
|
case GDScriptTokenizer::Token::MINUS:
|
|
operation->operation = BinaryOpNode::OP_SUBTRACTION;
|
|
break;
|
|
case GDScriptTokenizer::Token::STAR:
|
|
operation->operation = BinaryOpNode::OP_MULTIPLICATION;
|
|
break;
|
|
case GDScriptTokenizer::Token::SLASH:
|
|
operation->operation = BinaryOpNode::OP_DIVISION;
|
|
break;
|
|
case GDScriptTokenizer::Token::PERCENT:
|
|
operation->operation = BinaryOpNode::OP_MODULO;
|
|
break;
|
|
case GDScriptTokenizer::Token::LESS_LESS:
|
|
operation->operation = BinaryOpNode::OP_BIT_LEFT_SHIFT;
|
|
break;
|
|
case GDScriptTokenizer::Token::GREATER_GREATER:
|
|
operation->operation = BinaryOpNode::OP_BIT_RIGHT_SHIFT;
|
|
break;
|
|
case GDScriptTokenizer::Token::AMPERSAND:
|
|
operation->operation = BinaryOpNode::OP_BIT_AND;
|
|
break;
|
|
case GDScriptTokenizer::Token::PIPE:
|
|
operation->operation = BinaryOpNode::OP_BIT_AND;
|
|
break;
|
|
case GDScriptTokenizer::Token::CARET:
|
|
operation->operation = BinaryOpNode::OP_BIT_XOR;
|
|
break;
|
|
case GDScriptTokenizer::Token::AND:
|
|
case GDScriptTokenizer::Token::AMPERSAND_AMPERSAND:
|
|
operation->operation = BinaryOpNode::OP_LOGIC_AND;
|
|
break;
|
|
case GDScriptTokenizer::Token::OR:
|
|
case GDScriptTokenizer::Token::PIPE_PIPE:
|
|
operation->operation = BinaryOpNode::OP_LOGIC_OR;
|
|
break;
|
|
case GDScriptTokenizer::Token::IS:
|
|
operation->operation = BinaryOpNode::OP_TYPE_TEST;
|
|
break;
|
|
case GDScriptTokenizer::Token::IN:
|
|
operation->operation = BinaryOpNode::OP_CONTENT_TEST;
|
|
break;
|
|
case GDScriptTokenizer::Token::EQUAL_EQUAL:
|
|
operation->operation = BinaryOpNode::OP_COMP_EQUAL;
|
|
break;
|
|
case GDScriptTokenizer::Token::BANG_EQUAL:
|
|
operation->operation = BinaryOpNode::OP_COMP_NOT_EQUAL;
|
|
break;
|
|
case GDScriptTokenizer::Token::LESS:
|
|
operation->operation = BinaryOpNode::OP_COMP_LESS;
|
|
break;
|
|
case GDScriptTokenizer::Token::LESS_EQUAL:
|
|
operation->operation = BinaryOpNode::OP_COMP_LESS_EQUAL;
|
|
break;
|
|
case GDScriptTokenizer::Token::GREATER:
|
|
operation->operation = BinaryOpNode::OP_COMP_GREATER;
|
|
break;
|
|
case GDScriptTokenizer::Token::GREATER_EQUAL:
|
|
operation->operation = BinaryOpNode::OP_COMP_GREATER_EQUAL;
|
|
break;
|
|
default:
|
|
return nullptr; // Unreachable.
|
|
}
|
|
|
|
return operation;
|
|
}
|
|
|
|
GDScriptParser::ExpressionNode *GDScriptParser::parse_ternary_operator(ExpressionNode *p_previous_operand, bool p_can_assign) {
|
|
// Only one ternary operation exists, so no abstraction here.
|
|
TernaryOpNode *operation = alloc_node<TernaryOpNode>();
|
|
operation->true_expr = p_previous_operand;
|
|
|
|
operation->condition = parse_precedence(PREC_TERNARY, false);
|
|
|
|
if (operation->condition == nullptr) {
|
|
push_error(R"(Expected expression as ternary condition after "if".)");
|
|
}
|
|
|
|
consume(GDScriptTokenizer::Token::ELSE, R"(Expected "else" after ternary operator condition.)");
|
|
|
|
operation->false_expr = parse_precedence(PREC_TERNARY, false);
|
|
|
|
return operation;
|
|
}
|
|
|
|
GDScriptParser::ExpressionNode *GDScriptParser::parse_assignment(ExpressionNode *p_previous_operand, bool p_can_assign) {
|
|
if (!p_can_assign) {
|
|
push_error("Assignment is not allowed inside an expression.");
|
|
return parse_expression(false); // Return the following expression.
|
|
}
|
|
|
|
switch (p_previous_operand->type) {
|
|
case Node::IDENTIFIER:
|
|
case Node::SUBSCRIPT:
|
|
// Okay.
|
|
break;
|
|
default:
|
|
push_error(R"(Only identifier, attribute access, and subscription access can be used as assignment target.)");
|
|
return parse_expression(false); // Return the following expression.
|
|
}
|
|
|
|
AssignmentNode *assignment = alloc_node<AssignmentNode>();
|
|
switch (previous.type) {
|
|
case GDScriptTokenizer::Token::EQUAL:
|
|
assignment->operation = AssignmentNode::OP_NONE;
|
|
break;
|
|
case GDScriptTokenizer::Token::PLUS_EQUAL:
|
|
assignment->operation = AssignmentNode::OP_ADDITION;
|
|
break;
|
|
case GDScriptTokenizer::Token::MINUS_EQUAL:
|
|
assignment->operation = AssignmentNode::OP_SUBTRACTION;
|
|
break;
|
|
case GDScriptTokenizer::Token::STAR_EQUAL:
|
|
assignment->operation = AssignmentNode::OP_MULTIPLICATION;
|
|
break;
|
|
case GDScriptTokenizer::Token::SLASH_EQUAL:
|
|
assignment->operation = AssignmentNode::OP_DIVISION;
|
|
break;
|
|
case GDScriptTokenizer::Token::PERCENT_EQUAL:
|
|
assignment->operation = AssignmentNode::OP_MODULO;
|
|
break;
|
|
case GDScriptTokenizer::Token::LESS_LESS_EQUAL:
|
|
assignment->operation = AssignmentNode::OP_BIT_SHIFT_LEFT;
|
|
break;
|
|
case GDScriptTokenizer::Token::GREATER_GREATER_EQUAL:
|
|
assignment->operation = AssignmentNode::OP_BIT_SHIFT_RIGHT;
|
|
break;
|
|
case GDScriptTokenizer::Token::AMPERSAND_EQUAL:
|
|
assignment->operation = AssignmentNode::OP_BIT_AND;
|
|
break;
|
|
case GDScriptTokenizer::Token::PIPE_EQUAL:
|
|
assignment->operation = AssignmentNode::OP_BIT_OR;
|
|
break;
|
|
case GDScriptTokenizer::Token::CARET_EQUAL:
|
|
assignment->operation = AssignmentNode::OP_BIT_XOR;
|
|
break;
|
|
default:
|
|
break; // Unreachable.
|
|
}
|
|
assignment->assignee = p_previous_operand;
|
|
assignment->assigned_value = parse_expression(false);
|
|
|
|
return assignment;
|
|
}
|
|
|
|
GDScriptParser::ExpressionNode *GDScriptParser::parse_await(ExpressionNode *p_previous_operand, bool p_can_assign) {
|
|
AwaitNode *await = alloc_node<AwaitNode>();
|
|
await->to_await = parse_precedence(PREC_AWAIT, false);
|
|
|
|
return await;
|
|
}
|
|
|
|
GDScriptParser::ExpressionNode *GDScriptParser::parse_array(ExpressionNode *p_previous_operand, bool p_can_assign) {
|
|
ArrayNode *array = alloc_node<ArrayNode>();
|
|
|
|
if (!check(GDScriptTokenizer::Token::BRACKET_CLOSE)) {
|
|
do {
|
|
if (check(GDScriptTokenizer::Token::BRACKET_CLOSE)) {
|
|
// Allow for trailing comma.
|
|
break;
|
|
}
|
|
|
|
ExpressionNode *element = parse_expression(false);
|
|
if (element == nullptr) {
|
|
push_error(R"(Expected expression as array element.)");
|
|
} else {
|
|
array->elements.push_back(element);
|
|
}
|
|
} while (match(GDScriptTokenizer::Token::COMMA) && !is_at_end());
|
|
}
|
|
pop_multiline();
|
|
consume(GDScriptTokenizer::Token::BRACKET_CLOSE, R"(Expected closing "]" after array elements.)");
|
|
|
|
return array;
|
|
}
|
|
|
|
GDScriptParser::ExpressionNode *GDScriptParser::parse_dictionary(ExpressionNode *p_previous_operand, bool p_can_assign) {
|
|
DictionaryNode *dictionary = alloc_node<DictionaryNode>();
|
|
|
|
bool decided_style = false;
|
|
if (!check(GDScriptTokenizer::Token::BRACE_CLOSE)) {
|
|
do {
|
|
if (check(GDScriptTokenizer::Token::BRACE_CLOSE)) {
|
|
// Allow for trailing comma.
|
|
break;
|
|
}
|
|
|
|
// Key.
|
|
ExpressionNode *key = parse_expression(false, true); // Stop on "=" so we can check for Lua table style.
|
|
|
|
if (key == nullptr) {
|
|
push_error(R"(Expected expression as dictionary key.)");
|
|
}
|
|
|
|
if (!decided_style) {
|
|
switch (current.type) {
|
|
case GDScriptTokenizer::Token::COLON:
|
|
dictionary->style = DictionaryNode::PYTHON_DICT;
|
|
break;
|
|
case GDScriptTokenizer::Token::EQUAL:
|
|
dictionary->style = DictionaryNode::LUA_TABLE;
|
|
break;
|
|
default:
|
|
push_error(R"(Expected ":" or "=" after dictionary key.)");
|
|
break;
|
|
}
|
|
decided_style = true;
|
|
}
|
|
|
|
switch (dictionary->style) {
|
|
case DictionaryNode::LUA_TABLE:
|
|
if (key != nullptr && key->type != Node::IDENTIFIER) {
|
|
push_error("Expected identifier as dictionary key.");
|
|
}
|
|
if (!match(GDScriptTokenizer::Token::EQUAL)) {
|
|
if (match(GDScriptTokenizer::Token::COLON)) {
|
|
push_error(R"(Expected "=" after dictionary key. Mixing dictionary styles is not allowed.)");
|
|
advance(); // Consume wrong separator anyway.
|
|
} else {
|
|
push_error(R"(Expected "=" after dictionary key.)");
|
|
}
|
|
}
|
|
break;
|
|
case DictionaryNode::PYTHON_DICT:
|
|
if (!match(GDScriptTokenizer::Token::COLON)) {
|
|
if (match(GDScriptTokenizer::Token::EQUAL)) {
|
|
push_error(R"(Expected ":" after dictionary key. Mixing dictionary styles is not allowed.)");
|
|
advance(); // Consume wrong separator anyway.
|
|
} else {
|
|
push_error(R"(Expected ":" after dictionary key.)");
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
// Value.
|
|
ExpressionNode *value = parse_expression(false);
|
|
if (value == nullptr) {
|
|
push_error(R"(Expected expression as dictionary value.)");
|
|
}
|
|
|
|
if (key != nullptr && value != nullptr) {
|
|
dictionary->elements.push_back({ key, value });
|
|
}
|
|
} while (match(GDScriptTokenizer::Token::COMMA) && !is_at_end());
|
|
}
|
|
pop_multiline();
|
|
consume(GDScriptTokenizer::Token::BRACE_CLOSE, R"(Expected closing "}" after dictionary elements.)");
|
|
|
|
return dictionary;
|
|
}
|
|
|
|
GDScriptParser::ExpressionNode *GDScriptParser::parse_grouping(ExpressionNode *p_previous_operand, bool p_can_assign) {
|
|
ExpressionNode *grouped = parse_expression(false);
|
|
pop_multiline();
|
|
consume(GDScriptTokenizer::Token::PARENTHESIS_CLOSE, R"*(Expected closing ")" after grouping expression.)*");
|
|
return grouped;
|
|
}
|
|
|
|
GDScriptParser::ExpressionNode *GDScriptParser::parse_attribute(ExpressionNode *p_previous_operand, bool p_can_assign) {
|
|
SubscriptNode *attribute = alloc_node<SubscriptNode>();
|
|
|
|
attribute->is_attribute = true;
|
|
attribute->base = p_previous_operand;
|
|
|
|
if (!consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected identifier after "." for attribute access.)")) {
|
|
return nullptr;
|
|
}
|
|
attribute->attribute = parse_identifier();
|
|
|
|
return attribute;
|
|
}
|
|
|
|
GDScriptParser::ExpressionNode *GDScriptParser::parse_subscript(ExpressionNode *p_previous_operand, bool p_can_assign) {
|
|
SubscriptNode *subscript = alloc_node<SubscriptNode>();
|
|
|
|
subscript->base = p_previous_operand;
|
|
subscript->index = parse_expression(false);
|
|
|
|
pop_multiline();
|
|
consume(GDScriptTokenizer::Token::BRACKET_CLOSE, R"(Expected "]" after subscription index.)");
|
|
|
|
return subscript;
|
|
}
|
|
|
|
GDScriptParser::ExpressionNode *GDScriptParser::parse_cast(ExpressionNode *p_previous_operand, bool p_can_assign) {
|
|
CastNode *cast = alloc_node<CastNode>();
|
|
|
|
cast->operand = p_previous_operand;
|
|
cast->cast_type = parse_type();
|
|
|
|
if (cast->cast_type == nullptr) {
|
|
push_error(R"(Expected type specifier after "as".)");
|
|
return p_previous_operand;
|
|
}
|
|
|
|
return cast;
|
|
}
|
|
|
|
GDScriptParser::ExpressionNode *GDScriptParser::parse_call(ExpressionNode *p_previous_operand, bool p_can_assign) {
|
|
CallNode *call = alloc_node<CallNode>();
|
|
|
|
if (previous.type == GDScriptTokenizer::Token::SUPER) {
|
|
// Super call.
|
|
call->is_super = true;
|
|
push_multiline(true);
|
|
if (match(GDScriptTokenizer::Token::PARENTHESIS_OPEN)) {
|
|
// Implicit call to the parent method of the same name.
|
|
if (current_function == nullptr) {
|
|
push_error(R"(Cannot use implicit "super" call outside of a function.)");
|
|
pop_multiline();
|
|
return nullptr;
|
|
}
|
|
} else {
|
|
consume(GDScriptTokenizer::Token::PERIOD, R"(Expected "." or "(" after "super".)");
|
|
if (!consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected function name after ".".)")) {
|
|
pop_multiline();
|
|
return nullptr;
|
|
}
|
|
call->callee = parse_identifier();
|
|
consume(GDScriptTokenizer::Token::PARENTHESIS_OPEN, R"(Expected "(" after function name.)");
|
|
}
|
|
} else {
|
|
call->callee = p_previous_operand;
|
|
}
|
|
|
|
if (!check(GDScriptTokenizer::Token::PARENTHESIS_CLOSE)) {
|
|
// Arguments.
|
|
do {
|
|
if (check(GDScriptTokenizer::Token::PARENTHESIS_CLOSE)) {
|
|
// Allow for trailing comma.
|
|
break;
|
|
}
|
|
ExpressionNode *argument = parse_expression(false);
|
|
if (argument == nullptr) {
|
|
push_error(R"(Expected expression as the function argument.)");
|
|
} else {
|
|
call->arguments.push_back(argument);
|
|
}
|
|
} while (match(GDScriptTokenizer::Token::COMMA));
|
|
}
|
|
|
|
pop_multiline();
|
|
consume(GDScriptTokenizer::Token::PARENTHESIS_CLOSE, R"*(Expected closing ")" after call arguments.)*");
|
|
|
|
return call;
|
|
}
|
|
|
|
GDScriptParser::ExpressionNode *GDScriptParser::parse_get_node(ExpressionNode *p_previous_operand, bool p_can_assign) {
|
|
if (match(GDScriptTokenizer::Token::LITERAL)) {
|
|
if (previous.literal.get_type() != Variant::STRING) {
|
|
push_error(R"(Expect node path as string or identifer after "$".)");
|
|
return nullptr;
|
|
}
|
|
GetNodeNode *get_node = alloc_node<GetNodeNode>();
|
|
get_node->string = parse_literal();
|
|
return get_node;
|
|
} else if (check(GDScriptTokenizer::Token::IDENTIFIER)) {
|
|
GetNodeNode *get_node = alloc_node<GetNodeNode>();
|
|
do {
|
|
if (!consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expect node identifer after "/".)")) {
|
|
return nullptr;
|
|
}
|
|
IdentifierNode *identifier = parse_identifier();
|
|
get_node->chain.push_back(identifier);
|
|
} while (match(GDScriptTokenizer::Token::SLASH));
|
|
return get_node;
|
|
} else {
|
|
push_error(R"(Expect node path as string or identifer after "$".)");
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
GDScriptParser::ExpressionNode *GDScriptParser::parse_preload(ExpressionNode *p_previous_operand, bool p_can_assign) {
|
|
PreloadNode *preload = alloc_node<PreloadNode>();
|
|
preload->resolved_path = "<missing path>";
|
|
|
|
push_multiline(true);
|
|
consume(GDScriptTokenizer::Token::PARENTHESIS_OPEN, R"(Expected "(" after "preload".)");
|
|
|
|
preload->path = parse_expression(false);
|
|
|
|
if (preload->path == nullptr) {
|
|
push_error(R"(Expected resource path after "(".)");
|
|
} else if (preload->path->type != Node::LITERAL) {
|
|
push_error("Preloaded path must be a constant string.");
|
|
} else {
|
|
LiteralNode *path = static_cast<LiteralNode *>(preload->path);
|
|
if (path->value.get_type() != Variant::STRING) {
|
|
push_error("Preloaded path must be a constant string.");
|
|
} else {
|
|
preload->resolved_path = path->value;
|
|
// TODO: Save this as script dependency.
|
|
if (preload->resolved_path.is_rel_path()) {
|
|
preload->resolved_path = script_path.get_base_dir().plus_file(preload->resolved_path);
|
|
}
|
|
preload->resolved_path = preload->resolved_path.simplify_path();
|
|
if (!FileAccess::exists(preload->resolved_path)) {
|
|
push_error(vformat(R"(Preload file "%s" does not exist.)", preload->resolved_path));
|
|
} else {
|
|
// TODO: Don't load if validating: use completion cache.
|
|
preload->resource = ResourceLoader::load(preload->resolved_path);
|
|
if (preload->resource.is_null()) {
|
|
push_error(vformat(R"(Could not preload resource file "%s".)", preload->resolved_path));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
pop_multiline();
|
|
consume(GDScriptTokenizer::Token::PARENTHESIS_CLOSE, R"*(Expected ")" after preload path.)*");
|
|
|
|
return preload;
|
|
}
|
|
|
|
GDScriptParser::ExpressionNode *GDScriptParser::parse_invalid_token(ExpressionNode *p_previous_operand, bool p_can_assign) {
|
|
// Just for better error messages.
|
|
GDScriptTokenizer::Token::Type invalid = previous.type;
|
|
|
|
switch (invalid) {
|
|
case GDScriptTokenizer::Token::QUESTION_MARK:
|
|
push_error(R"(Unexpected "?" in source. If you want a ternary operator, use "truthy_value if true_condition else falsy_value".)");
|
|
break;
|
|
default:
|
|
return nullptr; // Unreachable.
|
|
}
|
|
|
|
// Return the previous expression.
|
|
return p_previous_operand;
|
|
}
|
|
|
|
GDScriptParser::TypeNode *GDScriptParser::parse_type(bool p_allow_void) {
|
|
if (!match(GDScriptTokenizer::Token::IDENTIFIER)) {
|
|
if (match(GDScriptTokenizer::Token::VOID)) {
|
|
if (p_allow_void) {
|
|
TypeNode *type = alloc_node<TypeNode>();
|
|
return type;
|
|
} else {
|
|
push_error(R"("void" is only allowed for a function return type.)");
|
|
}
|
|
}
|
|
// Leave error message to the caller who knows the context.
|
|
return nullptr;
|
|
}
|
|
TypeNode *type = alloc_node<TypeNode>();
|
|
IdentifierNode *type_base = parse_identifier();
|
|
|
|
// FIXME: This is likely not working with multiple chained attributes (A.B.C.D...).
|
|
// FIXME: I probably should use a list for this, not an attribute (since those aren't chained anymore).
|
|
if (match(GDScriptTokenizer::Token::PERIOD)) {
|
|
type->type_specifier = static_cast<SubscriptNode *>(parse_attribute(type_base, false));
|
|
if (type->type_specifier->index == nullptr) {
|
|
return nullptr;
|
|
}
|
|
} else {
|
|
type->type_base = type_base;
|
|
}
|
|
|
|
return type;
|
|
}
|
|
|
|
GDScriptParser::ParseRule *GDScriptParser::get_rule(GDScriptTokenizer::Token::Type p_token_type) {
|
|
// Function table for expression parsing.
|
|
// clang-format destroys the alignment here, so turn off for the table.
|
|
/* clang-format off */
|
|
static ParseRule rules[] = {
|
|
// PREFIX INFIX PRECEDENCE (for binary)
|
|
{ nullptr, nullptr, PREC_NONE }, // EMPTY,
|
|
// Basic
|
|
{ nullptr, nullptr, PREC_NONE }, // ANNOTATION,
|
|
{ &GDScriptParser::parse_identifier, nullptr, PREC_NONE }, // IDENTIFIER,
|
|
{ &GDScriptParser::parse_literal, nullptr, PREC_NONE }, // LITERAL,
|
|
// Comparison
|
|
{ nullptr, &GDScriptParser::parse_binary_operator, PREC_COMPARISON }, // LESS,
|
|
{ nullptr, &GDScriptParser::parse_binary_operator, PREC_COMPARISON }, // LESS_EQUAL,
|
|
{ nullptr, &GDScriptParser::parse_binary_operator, PREC_COMPARISON }, // GREATER,
|
|
{ nullptr, &GDScriptParser::parse_binary_operator, PREC_COMPARISON }, // GREATER_EQUAL,
|
|
{ nullptr, &GDScriptParser::parse_binary_operator, PREC_COMPARISON }, // EQUAL_EQUAL,
|
|
{ nullptr, &GDScriptParser::parse_binary_operator, PREC_COMPARISON }, // BANG_EQUAL,
|
|
// Logical
|
|
{ nullptr, &GDScriptParser::parse_binary_operator, PREC_LOGIC_AND }, // AND,
|
|
{ nullptr, &GDScriptParser::parse_binary_operator, PREC_LOGIC_OR }, // OR,
|
|
{ &GDScriptParser::parse_unary_operator, nullptr, PREC_NONE }, // NOT,
|
|
{ nullptr, &GDScriptParser::parse_binary_operator, PREC_LOGIC_AND }, // AMPERSAND_AMPERSAND,
|
|
{ nullptr, &GDScriptParser::parse_binary_operator, PREC_LOGIC_OR }, // PIPE_PIPE,
|
|
{ &GDScriptParser::parse_unary_operator, nullptr, PREC_NONE }, // BANG,
|
|
// Bitwise
|
|
{ nullptr, &GDScriptParser::parse_binary_operator, PREC_BIT_AND }, // AMPERSAND,
|
|
{ nullptr, &GDScriptParser::parse_binary_operator, PREC_BIT_OR }, // PIPE,
|
|
{ &GDScriptParser::parse_unary_operator, nullptr, PREC_NONE }, // TILDE,
|
|
{ nullptr, &GDScriptParser::parse_binary_operator, PREC_BIT_XOR }, // CARET,
|
|
{ nullptr, &GDScriptParser::parse_binary_operator, PREC_BIT_SHIFT }, // LESS_LESS,
|
|
{ nullptr, &GDScriptParser::parse_binary_operator, PREC_BIT_SHIFT }, // GREATER_GREATER,
|
|
// Math
|
|
{ &GDScriptParser::parse_unary_operator, &GDScriptParser::parse_binary_operator, PREC_ADDITION }, // PLUS,
|
|
{ &GDScriptParser::parse_unary_operator, &GDScriptParser::parse_binary_operator, PREC_SUBTRACTION }, // MINUS,
|
|
{ nullptr, &GDScriptParser::parse_binary_operator, PREC_FACTOR }, // STAR,
|
|
{ nullptr, &GDScriptParser::parse_binary_operator, PREC_FACTOR }, // SLASH,
|
|
{ nullptr, &GDScriptParser::parse_binary_operator, PREC_FACTOR }, // PERCENT,
|
|
// Assignment
|
|
{ nullptr, &GDScriptParser::parse_assignment, PREC_ASSIGNMENT }, // EQUAL,
|
|
{ nullptr, &GDScriptParser::parse_assignment, PREC_ASSIGNMENT }, // PLUS_EQUAL,
|
|
{ nullptr, &GDScriptParser::parse_assignment, PREC_ASSIGNMENT }, // MINUS_EQUAL,
|
|
{ nullptr, &GDScriptParser::parse_assignment, PREC_ASSIGNMENT }, // STAR_EQUAL,
|
|
{ nullptr, &GDScriptParser::parse_assignment, PREC_ASSIGNMENT }, // SLASH_EQUAL,
|
|
{ nullptr, &GDScriptParser::parse_assignment, PREC_ASSIGNMENT }, // PERCENT_EQUAL,
|
|
{ nullptr, &GDScriptParser::parse_assignment, PREC_ASSIGNMENT }, // LESS_LESS_EQUAL,
|
|
{ nullptr, &GDScriptParser::parse_assignment, PREC_ASSIGNMENT }, // GREATER_GREATER_EQUAL,
|
|
{ nullptr, &GDScriptParser::parse_assignment, PREC_ASSIGNMENT }, // AMPERSAND_EQUAL,
|
|
{ nullptr, &GDScriptParser::parse_assignment, PREC_ASSIGNMENT }, // PIPE_EQUAL,
|
|
{ nullptr, &GDScriptParser::parse_assignment, PREC_ASSIGNMENT }, // CARET_EQUAL,
|
|
// Control flow
|
|
{ nullptr, &GDScriptParser::parse_ternary_operator, PREC_TERNARY }, // IF,
|
|
{ nullptr, nullptr, PREC_NONE }, // ELIF,
|
|
{ nullptr, nullptr, PREC_NONE }, // ELSE,
|
|
{ nullptr, nullptr, PREC_NONE }, // FOR,
|
|
{ nullptr, nullptr, PREC_NONE }, // WHILE,
|
|
{ nullptr, nullptr, PREC_NONE }, // BREAK,
|
|
{ nullptr, nullptr, PREC_NONE }, // CONTINUE,
|
|
{ nullptr, nullptr, PREC_NONE }, // PASS,
|
|
{ nullptr, nullptr, PREC_NONE }, // RETURN,
|
|
{ nullptr, nullptr, PREC_NONE }, // MATCH,
|
|
// Keywords
|
|
{ nullptr, &GDScriptParser::parse_cast, PREC_CAST }, // AS,
|
|
{ nullptr, nullptr, PREC_NONE }, // ASSERT,
|
|
{ &GDScriptParser::parse_await, nullptr, PREC_NONE }, // AWAIT,
|
|
{ nullptr, nullptr, PREC_NONE }, // BREAKPOINT,
|
|
{ nullptr, nullptr, PREC_NONE }, // CLASS,
|
|
{ nullptr, nullptr, PREC_NONE }, // CLASS_NAME,
|
|
{ nullptr, nullptr, PREC_NONE }, // CONST,
|
|
{ nullptr, nullptr, PREC_NONE }, // ENUM,
|
|
{ nullptr, nullptr, PREC_NONE }, // EXTENDS,
|
|
{ nullptr, nullptr, PREC_NONE }, // FUNC,
|
|
{ nullptr, &GDScriptParser::parse_binary_operator, PREC_CONTENT_TEST }, // IN,
|
|
{ nullptr, &GDScriptParser::parse_binary_operator, PREC_TYPE_TEST }, // IS,
|
|
{ nullptr, nullptr, PREC_NONE }, // NAMESPACE,
|
|
{ &GDScriptParser::parse_preload, nullptr, PREC_NONE }, // PRELOAD,
|
|
{ &GDScriptParser::parse_self, nullptr, PREC_NONE }, // SELF,
|
|
{ nullptr, nullptr, PREC_NONE }, // SIGNAL,
|
|
{ nullptr, nullptr, PREC_NONE }, // STATIC,
|
|
{ &GDScriptParser::parse_call, nullptr, PREC_NONE }, // SUPER,
|
|
{ nullptr, nullptr, PREC_NONE }, // VAR,
|
|
{ nullptr, nullptr, PREC_NONE }, // VOID,
|
|
{ nullptr, nullptr, PREC_NONE }, // YIELD,
|
|
// Punctuation
|
|
{ &GDScriptParser::parse_array, &GDScriptParser::parse_subscript, PREC_SUBSCRIPT }, // BRACKET_OPEN,
|
|
{ nullptr, nullptr, PREC_NONE }, // BRACKET_CLOSE,
|
|
{ &GDScriptParser::parse_dictionary, nullptr, PREC_NONE }, // BRACE_OPEN,
|
|
{ nullptr, nullptr, PREC_NONE }, // BRACE_CLOSE,
|
|
{ &GDScriptParser::parse_grouping, &GDScriptParser::parse_call, PREC_CALL }, // PARENTHESIS_OPEN,
|
|
{ nullptr, nullptr, PREC_NONE }, // PARENTHESIS_CLOSE,
|
|
{ nullptr, nullptr, PREC_NONE }, // COMMA,
|
|
{ nullptr, nullptr, PREC_NONE }, // SEMICOLON,
|
|
{ nullptr, &GDScriptParser::parse_attribute, PREC_ATTRIBUTE }, // PERIOD,
|
|
{ nullptr, nullptr, PREC_NONE }, // PERIOD_PERIOD,
|
|
{ nullptr, nullptr, PREC_NONE }, // COLON,
|
|
{ &GDScriptParser::parse_get_node, nullptr, PREC_NONE }, // DOLLAR,
|
|
{ nullptr, nullptr, PREC_NONE }, // FORWARD_ARROW,
|
|
{ nullptr, nullptr, PREC_NONE }, // UNDERSCORE,
|
|
// Whitespace
|
|
{ nullptr, nullptr, PREC_NONE }, // NEWLINE,
|
|
{ nullptr, nullptr, PREC_NONE }, // INDENT,
|
|
{ nullptr, nullptr, PREC_NONE }, // DEDENT,
|
|
// Constants
|
|
{ &GDScriptParser::parse_builtin_constant, nullptr, PREC_NONE }, // CONST_PI,
|
|
{ &GDScriptParser::parse_builtin_constant, nullptr, PREC_NONE }, // CONST_TAU,
|
|
{ &GDScriptParser::parse_builtin_constant, nullptr, PREC_NONE }, // CONST_INF,
|
|
{ &GDScriptParser::parse_builtin_constant, nullptr, PREC_NONE }, // CONST_NAN,
|
|
// Error message improvement
|
|
{ nullptr, nullptr, PREC_NONE }, // VCS_CONFLICT_MARKER,
|
|
{ nullptr, nullptr, PREC_NONE }, // BACKTICK,
|
|
{ nullptr, &GDScriptParser::parse_invalid_token, PREC_CAST }, // QUESTION_MARK,
|
|
// Special
|
|
{ nullptr, nullptr, PREC_NONE }, // ERROR,
|
|
{ nullptr, nullptr, PREC_NONE }, // TK_EOF,
|
|
};
|
|
/* clang-format on */
|
|
// Avoid desync.
|
|
static_assert(sizeof(rules) / sizeof(rules[0]) == GDScriptTokenizer::Token::TK_MAX, "Amount of parse rules don't match the amount of token types.");
|
|
|
|
// Let's assume this this never invalid, since nothing generates a TK_MAX.
|
|
return &rules[p_token_type];
|
|
}
|
|
|
|
bool GDScriptParser::SuiteNode::has_local(const StringName &p_name) const {
|
|
if (locals_indices.has(p_name)) {
|
|
return true;
|
|
}
|
|
if (parent_block != nullptr) {
|
|
return parent_block->has_local(p_name);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
const GDScriptParser::SuiteNode::Local &GDScriptParser::SuiteNode::get_local(const StringName &p_name) const {
|
|
if (locals_indices.has(p_name)) {
|
|
return locals[locals_indices[p_name]];
|
|
}
|
|
if (parent_block != nullptr) {
|
|
return parent_block->get_local(p_name);
|
|
}
|
|
return empty;
|
|
}
|
|
|
|
bool GDScriptParser::AnnotationNode::apply(GDScriptParser *p_this, Node *p_target) const {
|
|
return (p_this->*(p_this->valid_annotations[name].apply))(this, p_target);
|
|
}
|
|
|
|
bool GDScriptParser::AnnotationNode::applies_to(uint32_t p_target_kinds) const {
|
|
return (info->target_kind & p_target_kinds) > 0;
|
|
}
|
|
|
|
bool GDScriptParser::validate_annotation_arguments(AnnotationNode *p_annotation) {
|
|
ERR_FAIL_COND_V_MSG(!valid_annotations.has(p_annotation->name), false, vformat(R"(Annotation "%s" not found to validate.)", p_annotation->name));
|
|
|
|
const MethodInfo &info = valid_annotations[p_annotation->name].info;
|
|
|
|
if (((info.flags & METHOD_FLAG_VARARG) == 0) && p_annotation->arguments.size() > info.arguments.size()) {
|
|
push_error(vformat(R"(Annotation "%s" requires at most %d arguments, but %d were given.)", p_annotation->name, info.arguments.size(), p_annotation->arguments.size()));
|
|
return false;
|
|
}
|
|
|
|
if (p_annotation->arguments.size() < info.arguments.size() - info.default_arguments.size()) {
|
|
push_error(vformat(R"(Annotation "%s" requires at least %d arguments, but %d were given.)", p_annotation->name, info.arguments.size() - info.default_arguments.size(), p_annotation->arguments.size()));
|
|
return false;
|
|
}
|
|
|
|
const List<PropertyInfo>::Element *E = info.arguments.front();
|
|
for (int i = 0; i < p_annotation->arguments.size(); i++) {
|
|
ExpressionNode *argument = p_annotation->arguments[i];
|
|
const PropertyInfo ¶meter = E->get();
|
|
|
|
if (E->next() != nullptr) {
|
|
E = E->next();
|
|
}
|
|
|
|
switch (parameter.type) {
|
|
case Variant::STRING:
|
|
case Variant::STRING_NAME:
|
|
case Variant::NODE_PATH:
|
|
// Allow "quote-less strings", as long as they are recognized as identifiers.
|
|
if (argument->type == Node::IDENTIFIER) {
|
|
IdentifierNode *string = static_cast<IdentifierNode *>(argument);
|
|
Callable::CallError error;
|
|
Vector<Variant> args = varray(string->name);
|
|
const Variant *name = args.ptr();
|
|
p_annotation->resolved_arguments.push_back(Variant::construct(parameter.type, &(name), 1, error));
|
|
if (error.error != Callable::CallError::CALL_OK) {
|
|
push_error(vformat(R"(Expected %s as argument %d of annotation "%s").)", Variant::get_type_name(parameter.type), i + 1, p_annotation->name));
|
|
p_annotation->resolved_arguments.remove(p_annotation->resolved_arguments.size() - 1);
|
|
return false;
|
|
}
|
|
break;
|
|
}
|
|
[[fallthrough]];
|
|
default: {
|
|
if (argument->type != Node::LITERAL) {
|
|
push_error(vformat(R"(Expected %s as argument %d of annotation "%s").)", Variant::get_type_name(parameter.type), i + 1, p_annotation->name));
|
|
return false;
|
|
}
|
|
|
|
Variant value = static_cast<LiteralNode *>(argument)->value;
|
|
if (!Variant::can_convert_strict(value.get_type(), parameter.type)) {
|
|
push_error(vformat(R"(Expected %s as argument %d of annotation "%s").)", Variant::get_type_name(parameter.type), i + 1, p_annotation->name));
|
|
return false;
|
|
}
|
|
Callable::CallError error;
|
|
const Variant *args = &value;
|
|
p_annotation->resolved_arguments.push_back(Variant::construct(parameter.type, &(args), 1, error));
|
|
if (error.error != Callable::CallError::CALL_OK) {
|
|
push_error(vformat(R"(Expected %s as argument %d of annotation "%s").)", Variant::get_type_name(parameter.type), i + 1, p_annotation->name));
|
|
p_annotation->resolved_arguments.remove(p_annotation->resolved_arguments.size() - 1);
|
|
return false;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool GDScriptParser::tool_annotation(const AnnotationNode *p_annotation, Node *p_node) {
|
|
this->_is_tool = true;
|
|
return true;
|
|
}
|
|
|
|
bool GDScriptParser::icon_annotation(const AnnotationNode *p_annotation, Node *p_node) {
|
|
ERR_FAIL_COND_V_MSG(p_node->type != Node::CLASS, false, R"("@icon" annotation can only be applied to classes.)");
|
|
ClassNode *p_class = static_cast<ClassNode *>(p_node);
|
|
p_class->icon_path = p_annotation->resolved_arguments[0];
|
|
return true;
|
|
}
|
|
|
|
bool GDScriptParser::onready_annotation(const AnnotationNode *p_annotation, Node *p_node) {
|
|
ERR_FAIL_COND_V_MSG(p_node->type != Node::VARIABLE, false, R"("@onready" annotation can only be applied to class variables.)");
|
|
|
|
VariableNode *variable = static_cast<VariableNode *>(p_node);
|
|
if (variable->onready) {
|
|
push_error(R"("@onready" annotation can only be used once per variable.)");
|
|
return false;
|
|
}
|
|
variable->onready = true;
|
|
current_class->onready_used = true;
|
|
return true;
|
|
}
|
|
|
|
template <PropertyHint t_hint, Variant::Type t_type>
|
|
bool GDScriptParser::export_annotations(const AnnotationNode *p_annotation, Node *p_node) {
|
|
ERR_FAIL_COND_V_MSG(p_node->type != Node::VARIABLE, false, vformat(R"("%s" annotation can only be applied to variables.)", p_annotation->name));
|
|
|
|
VariableNode *variable = static_cast<VariableNode *>(p_node);
|
|
if (variable->exported) {
|
|
push_error(vformat(R"(Annotation "%s" cannot be used with another "@export" annotation.)", p_annotation->name), p_annotation);
|
|
return false;
|
|
}
|
|
|
|
variable->exported = true;
|
|
// TODO: Improving setting type, especially for range hints, which can be int or float.
|
|
variable->export_info.type = t_type;
|
|
variable->export_info.hint = t_hint;
|
|
|
|
if (p_annotation->name == "@export") {
|
|
if (variable->datatype_specifier == nullptr) {
|
|
if (variable->initializer == nullptr) {
|
|
push_error(R"(Cannot use "@export" annotation with variable without type or initializer, since type can't be inferred.)", p_annotation);
|
|
return false;
|
|
}
|
|
if (variable->initializer->type != Node::LITERAL) {
|
|
push_error(R"(To use "@export" annotation with type-less variable, the default value must be a literal.)", p_annotation);
|
|
return false;
|
|
}
|
|
variable->export_info.type = static_cast<LiteralNode *>(variable->initializer)->value.get_type();
|
|
} // else: Actual type will be set by the analyzer, which can infer the proper type.
|
|
}
|
|
|
|
String hint_string;
|
|
for (int i = 0; i < p_annotation->resolved_arguments.size(); i++) {
|
|
if (i > 0) {
|
|
hint_string += ",";
|
|
}
|
|
hint_string += String(p_annotation->resolved_arguments[i]);
|
|
}
|
|
|
|
variable->export_info.hint_string = hint_string;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool GDScriptParser::warning_annotations(const AnnotationNode *p_annotation, Node *p_node) {
|
|
ERR_FAIL_V_MSG(false, "Not implemented.");
|
|
}
|
|
|
|
template <MultiplayerAPI::RPCMode t_mode>
|
|
bool GDScriptParser::network_annotations(const AnnotationNode *p_annotation, Node *p_node) {
|
|
ERR_FAIL_COND_V_MSG(p_node->type != Node::VARIABLE && p_node->type != Node::FUNCTION, false, vformat(R"("%s" annotation can only be applied to variables and functions.)", p_annotation->name));
|
|
|
|
switch (p_node->type) {
|
|
case Node::VARIABLE: {
|
|
VariableNode *variable = static_cast<VariableNode *>(p_node);
|
|
if (variable->rpc_mode != MultiplayerAPI::RPC_MODE_DISABLED) {
|
|
push_error(R"(RPC annotations can only be used once per variable.)", p_annotation);
|
|
}
|
|
variable->rpc_mode = t_mode;
|
|
break;
|
|
}
|
|
case Node::FUNCTION: {
|
|
FunctionNode *function = static_cast<FunctionNode *>(p_node);
|
|
if (function->rpc_mode != MultiplayerAPI::RPC_MODE_DISABLED) {
|
|
push_error(R"(RPC annotations can only be used once per function.)", p_annotation);
|
|
}
|
|
function->rpc_mode = t_mode;
|
|
break;
|
|
}
|
|
default:
|
|
return false; // Unreachable.
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/*---------- PRETTY PRINT FOR DEBUG ----------*/
|
|
|
|
#ifdef DEBUG_ENABLED
|
|
|
|
void GDScriptParser::TreePrinter::increase_indent() {
|
|
indent_level++;
|
|
indent = "";
|
|
for (int i = 0; i < indent_level * 4; i++) {
|
|
if (i % 4 == 0) {
|
|
indent += "|";
|
|
} else {
|
|
indent += " ";
|
|
}
|
|
}
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::decrease_indent() {
|
|
indent_level--;
|
|
indent = "";
|
|
for (int i = 0; i < indent_level * 4; i++) {
|
|
if (i % 4 == 0) {
|
|
indent += "|";
|
|
} else {
|
|
indent += " ";
|
|
}
|
|
}
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::push_line(const String &p_line) {
|
|
if (!p_line.empty()) {
|
|
push_text(p_line);
|
|
}
|
|
printed += "\n";
|
|
pending_indent = true;
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::push_text(const String &p_text) {
|
|
if (pending_indent) {
|
|
printed += indent;
|
|
pending_indent = false;
|
|
}
|
|
printed += p_text;
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_annotation(AnnotationNode *p_annotation) {
|
|
push_text(p_annotation->name);
|
|
push_text(" (");
|
|
for (int i = 0; i < p_annotation->arguments.size(); i++) {
|
|
if (i > 0) {
|
|
push_text(" , ");
|
|
}
|
|
print_expression(p_annotation->arguments[i]);
|
|
}
|
|
push_line(")");
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_array(ArrayNode *p_array) {
|
|
push_text("[ ");
|
|
for (int i = 0; i < p_array->elements.size(); i++) {
|
|
if (i > 0) {
|
|
push_text(" , ");
|
|
}
|
|
print_expression(p_array->elements[i]);
|
|
}
|
|
push_text(" ]");
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_assert(AssertNode *p_assert) {
|
|
push_text("Assert ( ");
|
|
print_expression(p_assert->condition);
|
|
push_line(" )");
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_assignment(AssignmentNode *p_assignment) {
|
|
switch (p_assignment->assignee->type) {
|
|
case Node::IDENTIFIER:
|
|
print_identifier(static_cast<IdentifierNode *>(p_assignment->assignee));
|
|
break;
|
|
case Node::SUBSCRIPT:
|
|
print_subscript(static_cast<SubscriptNode *>(p_assignment->assignee));
|
|
break;
|
|
default:
|
|
break; // Unreachable.
|
|
}
|
|
|
|
push_text(" ");
|
|
switch (p_assignment->operation) {
|
|
case AssignmentNode::OP_ADDITION:
|
|
push_text("+");
|
|
break;
|
|
case AssignmentNode::OP_SUBTRACTION:
|
|
push_text("-");
|
|
break;
|
|
case AssignmentNode::OP_MULTIPLICATION:
|
|
push_text("*");
|
|
break;
|
|
case AssignmentNode::OP_DIVISION:
|
|
push_text("/");
|
|
break;
|
|
case AssignmentNode::OP_MODULO:
|
|
push_text("%");
|
|
break;
|
|
case AssignmentNode::OP_BIT_SHIFT_LEFT:
|
|
push_text("<<");
|
|
break;
|
|
case AssignmentNode::OP_BIT_SHIFT_RIGHT:
|
|
push_text(">>");
|
|
break;
|
|
case AssignmentNode::OP_BIT_AND:
|
|
push_text("&");
|
|
break;
|
|
case AssignmentNode::OP_BIT_OR:
|
|
push_text("|");
|
|
break;
|
|
case AssignmentNode::OP_BIT_XOR:
|
|
push_text("^");
|
|
break;
|
|
case AssignmentNode::OP_NONE:
|
|
break;
|
|
}
|
|
push_text("= ");
|
|
print_expression(p_assignment->assigned_value);
|
|
push_line();
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_await(AwaitNode *p_await) {
|
|
push_text("Await ");
|
|
print_expression(p_await->to_await);
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_binary_op(BinaryOpNode *p_binary_op) {
|
|
// Surround in parenthesis for disambiguation.
|
|
push_text("(");
|
|
print_expression(p_binary_op->left_operand);
|
|
switch (p_binary_op->operation) {
|
|
case BinaryOpNode::OP_ADDITION:
|
|
push_text(" + ");
|
|
break;
|
|
case BinaryOpNode::OP_SUBTRACTION:
|
|
push_text(" - ");
|
|
break;
|
|
case BinaryOpNode::OP_MULTIPLICATION:
|
|
push_text(" * ");
|
|
break;
|
|
case BinaryOpNode::OP_DIVISION:
|
|
push_text(" / ");
|
|
break;
|
|
case BinaryOpNode::OP_MODULO:
|
|
push_text(" % ");
|
|
break;
|
|
case BinaryOpNode::OP_BIT_LEFT_SHIFT:
|
|
push_text(" << ");
|
|
break;
|
|
case BinaryOpNode::OP_BIT_RIGHT_SHIFT:
|
|
push_text(" >> ");
|
|
break;
|
|
case BinaryOpNode::OP_BIT_AND:
|
|
push_text(" & ");
|
|
break;
|
|
case BinaryOpNode::OP_BIT_OR:
|
|
push_text(" | ");
|
|
break;
|
|
case BinaryOpNode::OP_BIT_XOR:
|
|
push_text(" ^ ");
|
|
break;
|
|
case BinaryOpNode::OP_LOGIC_AND:
|
|
push_text(" AND ");
|
|
break;
|
|
case BinaryOpNode::OP_LOGIC_OR:
|
|
push_text(" OR ");
|
|
break;
|
|
case BinaryOpNode::OP_TYPE_TEST:
|
|
push_text(" IS ");
|
|
break;
|
|
case BinaryOpNode::OP_CONTENT_TEST:
|
|
push_text(" IN ");
|
|
break;
|
|
case BinaryOpNode::OP_COMP_EQUAL:
|
|
push_text(" == ");
|
|
break;
|
|
case BinaryOpNode::OP_COMP_NOT_EQUAL:
|
|
push_text(" != ");
|
|
break;
|
|
case BinaryOpNode::OP_COMP_LESS:
|
|
push_text(" < ");
|
|
break;
|
|
case BinaryOpNode::OP_COMP_LESS_EQUAL:
|
|
push_text(" <= ");
|
|
break;
|
|
case BinaryOpNode::OP_COMP_GREATER:
|
|
push_text(" > ");
|
|
break;
|
|
case BinaryOpNode::OP_COMP_GREATER_EQUAL:
|
|
push_text(" >= ");
|
|
break;
|
|
}
|
|
print_expression(p_binary_op->right_operand);
|
|
// Surround in parenthesis for disambiguation.
|
|
push_text(")");
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_call(CallNode *p_call) {
|
|
if (p_call->is_super) {
|
|
push_text("super");
|
|
if (p_call->callee != nullptr) {
|
|
push_text(".");
|
|
print_expression(p_call->callee);
|
|
}
|
|
} else {
|
|
print_expression(p_call->callee);
|
|
}
|
|
push_text("( ");
|
|
for (int i = 0; i < p_call->arguments.size(); i++) {
|
|
if (i > 0) {
|
|
push_text(" , ");
|
|
}
|
|
print_expression(p_call->arguments[i]);
|
|
}
|
|
push_text(" )");
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_cast(CastNode *p_cast) {
|
|
print_expression(p_cast->operand);
|
|
push_text(" AS ");
|
|
print_type(p_cast->cast_type);
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_class(ClassNode *p_class) {
|
|
push_text("Class ");
|
|
if (p_class->identifier == nullptr) {
|
|
push_text("<unnamed>");
|
|
} else {
|
|
print_identifier(p_class->identifier);
|
|
}
|
|
|
|
if (p_class->extends_used) {
|
|
bool first = true;
|
|
push_text(" Extends ");
|
|
if (!p_class->extends_path.empty()) {
|
|
push_text(vformat(R"("%s")", p_class->extends_path));
|
|
first = false;
|
|
}
|
|
for (int i = 0; i < p_class->extends.size(); i++) {
|
|
if (!first) {
|
|
push_text(".");
|
|
} else {
|
|
first = false;
|
|
}
|
|
push_text(p_class->extends[i]);
|
|
}
|
|
}
|
|
|
|
push_line(" :");
|
|
|
|
increase_indent();
|
|
|
|
for (int i = 0; i < p_class->members.size(); i++) {
|
|
const ClassNode::Member &m = p_class->members[i];
|
|
|
|
switch (m.type) {
|
|
case ClassNode::Member::CLASS:
|
|
print_class(m.m_class);
|
|
break;
|
|
case ClassNode::Member::VARIABLE:
|
|
print_variable(m.variable);
|
|
break;
|
|
case ClassNode::Member::CONSTANT:
|
|
print_constant(m.constant);
|
|
break;
|
|
case ClassNode::Member::SIGNAL:
|
|
print_signal(m.signal);
|
|
break;
|
|
case ClassNode::Member::FUNCTION:
|
|
print_function(m.function);
|
|
break;
|
|
case ClassNode::Member::ENUM:
|
|
print_enum(m.m_enum);
|
|
break;
|
|
case ClassNode::Member::ENUM_VALUE:
|
|
break; // Nothing. Will be printed by enum.
|
|
case ClassNode::Member::UNDEFINED:
|
|
push_line("<unknown member>");
|
|
break;
|
|
}
|
|
}
|
|
|
|
decrease_indent();
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_constant(ConstantNode *p_constant) {
|
|
push_text("Constant ");
|
|
print_identifier(p_constant->identifier);
|
|
|
|
increase_indent();
|
|
|
|
push_line();
|
|
push_text("= ");
|
|
if (p_constant->initializer == nullptr) {
|
|
push_text("<missing value>");
|
|
} else {
|
|
print_expression(p_constant->initializer);
|
|
}
|
|
decrease_indent();
|
|
push_line();
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_dictionary(DictionaryNode *p_dictionary) {
|
|
push_line("{");
|
|
increase_indent();
|
|
for (int i = 0; i < p_dictionary->elements.size(); i++) {
|
|
print_expression(p_dictionary->elements[i].key);
|
|
if (p_dictionary->style == DictionaryNode::PYTHON_DICT) {
|
|
push_text(" : ");
|
|
} else {
|
|
push_text(" = ");
|
|
}
|
|
print_expression(p_dictionary->elements[i].value);
|
|
push_line(" ,");
|
|
}
|
|
decrease_indent();
|
|
push_text("}");
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_expression(ExpressionNode *p_expression) {
|
|
switch (p_expression->type) {
|
|
case Node::ARRAY:
|
|
print_array(static_cast<ArrayNode *>(p_expression));
|
|
break;
|
|
case Node::ASSIGNMENT:
|
|
print_assignment(static_cast<AssignmentNode *>(p_expression));
|
|
break;
|
|
case Node::AWAIT:
|
|
print_await(static_cast<AwaitNode *>(p_expression));
|
|
break;
|
|
case Node::BINARY_OPERATOR:
|
|
print_binary_op(static_cast<BinaryOpNode *>(p_expression));
|
|
break;
|
|
case Node::CALL:
|
|
print_call(static_cast<CallNode *>(p_expression));
|
|
break;
|
|
case Node::CAST:
|
|
print_cast(static_cast<CastNode *>(p_expression));
|
|
break;
|
|
case Node::DICTIONARY:
|
|
print_dictionary(static_cast<DictionaryNode *>(p_expression));
|
|
break;
|
|
case Node::GET_NODE:
|
|
print_get_node(static_cast<GetNodeNode *>(p_expression));
|
|
break;
|
|
case Node::IDENTIFIER:
|
|
print_identifier(static_cast<IdentifierNode *>(p_expression));
|
|
break;
|
|
case Node::LITERAL:
|
|
print_literal(static_cast<LiteralNode *>(p_expression));
|
|
break;
|
|
case Node::PRELOAD:
|
|
print_preload(static_cast<PreloadNode *>(p_expression));
|
|
break;
|
|
case Node::SELF:
|
|
print_self(static_cast<SelfNode *>(p_expression));
|
|
break;
|
|
case Node::SUBSCRIPT:
|
|
print_subscript(static_cast<SubscriptNode *>(p_expression));
|
|
break;
|
|
case Node::TERNARY_OPERATOR:
|
|
print_ternary_op(static_cast<TernaryOpNode *>(p_expression));
|
|
break;
|
|
case Node::UNARY_OPERATOR:
|
|
print_unary_op(static_cast<UnaryOpNode *>(p_expression));
|
|
break;
|
|
default:
|
|
push_text(vformat("<unknown expression %d>", p_expression->type));
|
|
break;
|
|
}
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_enum(EnumNode *p_enum) {
|
|
push_text("Enum ");
|
|
if (p_enum->identifier != nullptr) {
|
|
print_identifier(p_enum->identifier);
|
|
} else {
|
|
push_text("<unnamed>");
|
|
}
|
|
|
|
push_line(" {");
|
|
increase_indent();
|
|
for (int i = 0; i < p_enum->values.size(); i++) {
|
|
const EnumNode::Value &item = p_enum->values[i];
|
|
print_identifier(item.identifier);
|
|
push_text(" = ");
|
|
push_text(itos(item.value));
|
|
push_line(" ,");
|
|
}
|
|
decrease_indent();
|
|
push_line("}");
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_for(ForNode *p_for) {
|
|
push_text("For ");
|
|
print_identifier(p_for->variable);
|
|
push_text(" IN ");
|
|
print_expression(p_for->list);
|
|
push_line(" :");
|
|
|
|
increase_indent();
|
|
|
|
print_suite(p_for->loop);
|
|
|
|
decrease_indent();
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_function(FunctionNode *p_function) {
|
|
for (const List<AnnotationNode *>::Element *E = p_function->annotations.front(); E != nullptr; E = E->next()) {
|
|
print_annotation(E->get());
|
|
}
|
|
push_text("Function ");
|
|
print_identifier(p_function->identifier);
|
|
push_text("( ");
|
|
for (int i = 0; i < p_function->parameters.size(); i++) {
|
|
if (i > 0) {
|
|
push_text(" , ");
|
|
}
|
|
print_parameter(p_function->parameters[i]);
|
|
}
|
|
push_line(" ) :");
|
|
increase_indent();
|
|
print_suite(p_function->body);
|
|
decrease_indent();
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_get_node(GetNodeNode *p_get_node) {
|
|
push_text("$");
|
|
if (p_get_node->string != nullptr) {
|
|
print_literal(p_get_node->string);
|
|
} else {
|
|
for (int i = 0; i < p_get_node->chain.size(); i++) {
|
|
if (i > 0) {
|
|
push_text("/");
|
|
}
|
|
print_identifier(p_get_node->chain[i]);
|
|
}
|
|
}
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_identifier(IdentifierNode *p_identifier) {
|
|
push_text(p_identifier->name);
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_if(IfNode *p_if, bool p_is_elif) {
|
|
if (p_is_elif) {
|
|
push_text("Elif ");
|
|
} else {
|
|
push_text("If ");
|
|
}
|
|
print_expression(p_if->condition);
|
|
push_line(" :");
|
|
|
|
increase_indent();
|
|
print_suite(p_if->true_block);
|
|
decrease_indent();
|
|
|
|
// FIXME: Properly detect "elif" blocks.
|
|
if (p_if->false_block != nullptr) {
|
|
push_line("Else :");
|
|
increase_indent();
|
|
print_suite(p_if->false_block);
|
|
decrease_indent();
|
|
}
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_literal(LiteralNode *p_literal) {
|
|
// Prefix for string types.
|
|
switch (p_literal->value.get_type()) {
|
|
case Variant::NODE_PATH:
|
|
push_text("^\"");
|
|
break;
|
|
case Variant::STRING:
|
|
push_text("\"");
|
|
break;
|
|
case Variant::STRING_NAME:
|
|
push_text("&\"");
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
push_text(p_literal->value);
|
|
// Suffix for string types.
|
|
switch (p_literal->value.get_type()) {
|
|
case Variant::NODE_PATH:
|
|
case Variant::STRING:
|
|
case Variant::STRING_NAME:
|
|
push_text("\"");
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_match(MatchNode *p_match) {
|
|
push_text("Match ");
|
|
print_expression(p_match->test);
|
|
push_line(" :");
|
|
|
|
increase_indent();
|
|
for (int i = 0; i < p_match->branches.size(); i++) {
|
|
print_match_branch(p_match->branches[i]);
|
|
}
|
|
decrease_indent();
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_match_branch(MatchBranchNode *p_match_branch) {
|
|
for (int i = 0; i < p_match_branch->patterns.size(); i++) {
|
|
if (i > 0) {
|
|
push_text(" , ");
|
|
}
|
|
print_match_pattern(p_match_branch->patterns[i]);
|
|
}
|
|
|
|
push_line(" :");
|
|
|
|
increase_indent();
|
|
print_suite(p_match_branch->block);
|
|
decrease_indent();
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_match_pattern(PatternNode *p_match_pattern) {
|
|
switch (p_match_pattern->pattern_type) {
|
|
case PatternNode::PT_LITERAL:
|
|
print_literal(p_match_pattern->literal);
|
|
break;
|
|
case PatternNode::PT_WILDCARD:
|
|
push_text("_");
|
|
break;
|
|
case PatternNode::PT_REST:
|
|
push_text("..");
|
|
break;
|
|
case PatternNode::PT_BIND:
|
|
push_text("Var ");
|
|
print_identifier(p_match_pattern->bind);
|
|
break;
|
|
case PatternNode::PT_EXPRESSION:
|
|
print_expression(p_match_pattern->expression);
|
|
break;
|
|
case PatternNode::PT_ARRAY:
|
|
push_text("[ ");
|
|
for (int i = 0; i < p_match_pattern->array.size(); i++) {
|
|
if (i > 0) {
|
|
push_text(" , ");
|
|
}
|
|
print_match_pattern(p_match_pattern->array[i]);
|
|
}
|
|
push_text(" ]");
|
|
break;
|
|
case PatternNode::PT_DICTIONARY:
|
|
push_text("{ ");
|
|
for (int i = 0; i < p_match_pattern->dictionary.size(); i++) {
|
|
if (i > 0) {
|
|
push_text(" , ");
|
|
}
|
|
if (p_match_pattern->dictionary[i].key != nullptr) {
|
|
// Key can be null for rest pattern.
|
|
print_expression(p_match_pattern->dictionary[i].key);
|
|
push_text(" : ");
|
|
}
|
|
print_match_pattern(p_match_pattern->dictionary[i].value_pattern);
|
|
}
|
|
push_text(" }");
|
|
break;
|
|
}
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_parameter(ParameterNode *p_parameter) {
|
|
print_identifier(p_parameter->identifier);
|
|
if (p_parameter->datatype_specifier != nullptr) {
|
|
push_text(" : ");
|
|
print_type(p_parameter->datatype_specifier);
|
|
}
|
|
if (p_parameter->default_value != nullptr) {
|
|
push_text(" = ");
|
|
print_expression(p_parameter->default_value);
|
|
}
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_preload(PreloadNode *p_preload) {
|
|
push_text(R"(Preload ( ")");
|
|
push_text(p_preload->resolved_path);
|
|
push_text(R"(" )");
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_return(ReturnNode *p_return) {
|
|
push_text("Return");
|
|
if (p_return->return_value != nullptr) {
|
|
push_text(" ");
|
|
print_expression(p_return->return_value);
|
|
}
|
|
push_line();
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_self(SelfNode *p_self) {
|
|
push_text("Self(");
|
|
if (p_self->current_class->identifier != nullptr) {
|
|
print_identifier(p_self->current_class->identifier);
|
|
} else {
|
|
push_text("<main class>");
|
|
}
|
|
push_text(")");
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_signal(SignalNode *p_signal) {
|
|
push_text("Signal ");
|
|
print_identifier(p_signal->identifier);
|
|
push_text("( ");
|
|
for (int i = 0; i < p_signal->parameters.size(); i++) {
|
|
print_parameter(p_signal->parameters[i]);
|
|
}
|
|
push_line(" )");
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_subscript(SubscriptNode *p_subscript) {
|
|
print_expression(p_subscript->base);
|
|
if (p_subscript->is_attribute) {
|
|
push_text(".");
|
|
print_identifier(p_subscript->attribute);
|
|
} else {
|
|
push_text("[ ");
|
|
print_expression(p_subscript->index);
|
|
push_text(" ]");
|
|
}
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_statement(Node *p_statement) {
|
|
switch (p_statement->type) {
|
|
case Node::ASSERT:
|
|
print_assert(static_cast<AssertNode *>(p_statement));
|
|
break;
|
|
case Node::VARIABLE:
|
|
print_variable(static_cast<VariableNode *>(p_statement));
|
|
break;
|
|
case Node::CONSTANT:
|
|
print_constant(static_cast<ConstantNode *>(p_statement));
|
|
break;
|
|
case Node::IF:
|
|
print_if(static_cast<IfNode *>(p_statement));
|
|
break;
|
|
case Node::FOR:
|
|
print_for(static_cast<ForNode *>(p_statement));
|
|
break;
|
|
case Node::WHILE:
|
|
print_while(static_cast<WhileNode *>(p_statement));
|
|
break;
|
|
case Node::MATCH:
|
|
print_match(static_cast<MatchNode *>(p_statement));
|
|
break;
|
|
case Node::RETURN:
|
|
print_return(static_cast<ReturnNode *>(p_statement));
|
|
break;
|
|
case Node::BREAK:
|
|
push_line("Break");
|
|
break;
|
|
case Node::CONTINUE:
|
|
push_line("Continue");
|
|
break;
|
|
case Node::PASS:
|
|
push_line("Pass");
|
|
break;
|
|
case Node::BREAKPOINT:
|
|
push_line("Breakpoint");
|
|
break;
|
|
case Node::ASSIGNMENT:
|
|
print_assignment(static_cast<AssignmentNode *>(p_statement));
|
|
break;
|
|
default:
|
|
if (p_statement->is_expression()) {
|
|
print_expression(static_cast<ExpressionNode *>(p_statement));
|
|
push_line();
|
|
} else {
|
|
push_line(vformat("<unknown statement %d>", p_statement->type));
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_suite(SuiteNode *p_suite) {
|
|
for (int i = 0; i < p_suite->statements.size(); i++) {
|
|
print_statement(p_suite->statements[i]);
|
|
}
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_ternary_op(TernaryOpNode *p_ternary_op) {
|
|
// Surround in parenthesis for disambiguation.
|
|
push_text("(");
|
|
print_expression(p_ternary_op->true_expr);
|
|
push_text(") IF (");
|
|
print_expression(p_ternary_op->condition);
|
|
push_text(") ELSE (");
|
|
print_expression(p_ternary_op->false_expr);
|
|
push_text(")");
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_type(TypeNode *p_type) {
|
|
if (p_type->type_specifier != nullptr) {
|
|
print_subscript(p_type->type_specifier);
|
|
} else if (p_type->type_base != nullptr) {
|
|
print_identifier(p_type->type_base);
|
|
} else {
|
|
push_text("Void");
|
|
}
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_unary_op(UnaryOpNode *p_unary_op) {
|
|
// Surround in parenthesis for disambiguation.
|
|
push_text("(");
|
|
switch (p_unary_op->operation) {
|
|
case UnaryOpNode::OP_POSITIVE:
|
|
push_text("+");
|
|
break;
|
|
case UnaryOpNode::OP_NEGATIVE:
|
|
push_text("-");
|
|
break;
|
|
case UnaryOpNode::OP_LOGIC_NOT:
|
|
push_text("NOT");
|
|
break;
|
|
case UnaryOpNode::OP_COMPLEMENT:
|
|
push_text("~");
|
|
break;
|
|
}
|
|
print_expression(p_unary_op->operand);
|
|
// Surround in parenthesis for disambiguation.
|
|
push_text(")");
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_variable(VariableNode *p_variable) {
|
|
for (const List<AnnotationNode *>::Element *E = p_variable->annotations.front(); E != nullptr; E = E->next()) {
|
|
print_annotation(E->get());
|
|
}
|
|
|
|
push_text("Variable ");
|
|
print_identifier(p_variable->identifier);
|
|
|
|
increase_indent();
|
|
|
|
push_line();
|
|
push_text("= ");
|
|
if (p_variable->initializer == nullptr) {
|
|
push_text("<default value>");
|
|
} else {
|
|
print_expression(p_variable->initializer);
|
|
}
|
|
decrease_indent();
|
|
push_line();
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_while(WhileNode *p_while) {
|
|
push_text("While ");
|
|
print_expression(p_while->condition);
|
|
push_line(" :");
|
|
|
|
increase_indent();
|
|
print_suite(p_while->loop);
|
|
decrease_indent();
|
|
}
|
|
|
|
void GDScriptParser::TreePrinter::print_tree(const GDScriptParser &p_parser) {
|
|
ERR_FAIL_COND_MSG(p_parser.get_tree() == nullptr, "Parse the code before printing the parse tree.");
|
|
|
|
if (p_parser.is_tool()) {
|
|
push_line("@tool");
|
|
}
|
|
if (!p_parser.get_tree()->icon_path.empty()) {
|
|
push_text(R"(@icon (")");
|
|
push_text(p_parser.get_tree()->icon_path);
|
|
push_line("\")");
|
|
}
|
|
print_class(p_parser.get_tree());
|
|
|
|
print_line(printed);
|
|
}
|
|
|
|
#endif // DEBUG_ENABLED
|