mirror of
https://github.com/godotengine/godot.git
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301 lines
9.2 KiB
C++
301 lines
9.2 KiB
C++
/*************************************************************************/
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/* gdscript_tokenizer.h */
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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) 2007-2019 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2019 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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#ifndef GDSCRIPT_TOKENIZER_H
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#define GDSCRIPT_TOKENIZER_H
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#include "core/pair.h"
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#include "core/string_name.h"
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#include "core/ustring.h"
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#include "core/variant.h"
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#include "core/vmap.h"
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#include "gdscript_functions.h"
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class GDScriptTokenizer {
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public:
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enum Token {
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TK_EMPTY,
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TK_IDENTIFIER,
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TK_CONSTANT,
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TK_SELF,
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TK_BUILT_IN_TYPE,
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TK_BUILT_IN_FUNC,
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TK_OP_IN,
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TK_OP_EQUAL,
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TK_OP_NOT_EQUAL,
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TK_OP_LESS,
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TK_OP_LESS_EQUAL,
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TK_OP_GREATER,
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TK_OP_GREATER_EQUAL,
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TK_OP_AND,
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TK_OP_OR,
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TK_OP_NOT,
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TK_OP_ADD,
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TK_OP_SUB,
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TK_OP_MUL,
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TK_OP_DIV,
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TK_OP_MOD,
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TK_OP_SHIFT_LEFT,
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TK_OP_SHIFT_RIGHT,
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TK_OP_ASSIGN,
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TK_OP_ASSIGN_ADD,
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TK_OP_ASSIGN_SUB,
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TK_OP_ASSIGN_MUL,
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TK_OP_ASSIGN_DIV,
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TK_OP_ASSIGN_MOD,
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TK_OP_ASSIGN_SHIFT_LEFT,
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TK_OP_ASSIGN_SHIFT_RIGHT,
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TK_OP_ASSIGN_BIT_AND,
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TK_OP_ASSIGN_BIT_OR,
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TK_OP_ASSIGN_BIT_XOR,
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TK_OP_BIT_AND,
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TK_OP_BIT_OR,
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TK_OP_BIT_XOR,
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TK_OP_BIT_INVERT,
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//TK_OP_PLUS_PLUS,
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//TK_OP_MINUS_MINUS,
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TK_CF_IF,
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TK_CF_ELIF,
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TK_CF_ELSE,
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TK_CF_FOR,
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TK_CF_WHILE,
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TK_CF_BREAK,
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TK_CF_CONTINUE,
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TK_CF_PASS,
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TK_CF_RETURN,
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TK_CF_MATCH,
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TK_PR_FUNCTION,
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TK_PR_CLASS,
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TK_PR_CLASS_NAME,
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TK_PR_EXTENDS,
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TK_PR_IS,
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TK_PR_ONREADY,
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TK_PR_TOOL,
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TK_PR_STATIC,
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TK_PR_EXPORT,
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TK_PR_SETGET,
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TK_PR_CONST,
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TK_PR_VAR,
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TK_PR_AS,
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TK_PR_VOID,
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TK_PR_ENUM,
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TK_PR_PRELOAD,
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TK_PR_ASSERT,
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TK_PR_YIELD,
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TK_PR_SIGNAL,
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TK_PR_BREAKPOINT,
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TK_PR_REMOTE,
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TK_PR_SYNC,
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TK_PR_MASTER,
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TK_PR_SLAVE, // Deprecated by TK_PR_PUPPET, to remove in 4.0
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TK_PR_PUPPET,
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TK_PR_REMOTESYNC,
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TK_PR_MASTERSYNC,
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TK_PR_PUPPETSYNC,
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TK_BRACKET_OPEN,
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TK_BRACKET_CLOSE,
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TK_CURLY_BRACKET_OPEN,
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TK_CURLY_BRACKET_CLOSE,
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TK_PARENTHESIS_OPEN,
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TK_PARENTHESIS_CLOSE,
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TK_COMMA,
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TK_SEMICOLON,
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TK_PERIOD,
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TK_QUESTION_MARK,
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TK_COLON,
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TK_DOLLAR,
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TK_FORWARD_ARROW,
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TK_NEWLINE,
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TK_CONST_PI,
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TK_CONST_TAU,
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TK_WILDCARD,
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TK_CONST_INF,
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TK_CONST_NAN,
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TK_ERROR,
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TK_EOF,
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TK_CURSOR, //used for code completion
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TK_MAX
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};
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protected:
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enum StringMode {
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STRING_SINGLE_QUOTE,
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STRING_DOUBLE_QUOTE,
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STRING_MULTILINE
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};
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static const char *token_names[TK_MAX];
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public:
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static const char *get_token_name(Token p_token);
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bool is_token_literal(int p_offset = 0, bool variable_safe = false) const;
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StringName get_token_literal(int p_offset = 0) const;
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virtual const Variant &get_token_constant(int p_offset = 0) const = 0;
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virtual Token get_token(int p_offset = 0) const = 0;
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virtual StringName get_token_identifier(int p_offset = 0) const = 0;
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virtual GDScriptFunctions::Function get_token_built_in_func(int p_offset = 0) const = 0;
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virtual Variant::Type get_token_type(int p_offset = 0) const = 0;
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virtual int get_token_line(int p_offset = 0) const = 0;
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virtual int get_token_column(int p_offset = 0) const = 0;
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virtual int get_token_line_indent(int p_offset = 0) const = 0;
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virtual int get_token_line_tab_indent(int p_offset = 0) const = 0;
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virtual String get_token_error(int p_offset = 0) const = 0;
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virtual void advance(int p_amount = 1) = 0;
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#ifdef DEBUG_ENABLED
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virtual const Vector<Pair<int, String> > &get_warning_skips() const = 0;
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virtual const Set<String> &get_warning_global_skips() const = 0;
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virtual bool is_ignoring_warnings() const = 0;
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#endif // DEBUG_ENABLED
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virtual ~GDScriptTokenizer(){};
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};
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class GDScriptTokenizerText : public GDScriptTokenizer {
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enum {
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MAX_LOOKAHEAD = 4,
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TK_RB_SIZE = MAX_LOOKAHEAD * 2 + 1
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};
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struct TokenData {
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Token type;
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StringName identifier; //for identifier types
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Variant constant; //for constant types
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union {
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Variant::Type vtype; //for type types
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GDScriptFunctions::Function func; //function for built in functions
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int warning_code; //for warning skip
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};
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int line, col;
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TokenData() {
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type = TK_EMPTY;
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line = col = 0;
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vtype = Variant::NIL;
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}
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};
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void _make_token(Token p_type);
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void _make_newline(int p_indentation = 0, int p_tabs = 0);
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void _make_identifier(const StringName &p_identifier);
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void _make_built_in_func(GDScriptFunctions::Function p_func);
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void _make_constant(const Variant &p_constant);
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void _make_type(const Variant::Type &p_type);
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void _make_error(const String &p_error);
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String code;
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int len;
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int code_pos;
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const CharType *_code;
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int line;
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int column;
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TokenData tk_rb[TK_RB_SIZE * 2 + 1];
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int tk_rb_pos;
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String last_error;
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bool error_flag;
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#ifdef DEBUG_ENABLED
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Vector<Pair<int, String> > warning_skips;
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Set<String> warning_global_skips;
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bool ignore_warnings;
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#endif // DEBUG_ENABLED
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void _advance();
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public:
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void set_code(const String &p_code);
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virtual Token get_token(int p_offset = 0) const;
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virtual StringName get_token_identifier(int p_offset = 0) const;
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virtual GDScriptFunctions::Function get_token_built_in_func(int p_offset = 0) const;
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virtual Variant::Type get_token_type(int p_offset = 0) const;
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virtual int get_token_line(int p_offset = 0) const;
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virtual int get_token_column(int p_offset = 0) const;
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virtual int get_token_line_indent(int p_offset = 0) const;
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virtual int get_token_line_tab_indent(int p_offset = 0) const;
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virtual const Variant &get_token_constant(int p_offset = 0) const;
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virtual String get_token_error(int p_offset = 0) const;
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virtual void advance(int p_amount = 1);
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#ifdef DEBUG_ENABLED
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virtual const Vector<Pair<int, String> > &get_warning_skips() const { return warning_skips; }
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virtual const Set<String> &get_warning_global_skips() const { return warning_global_skips; }
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virtual bool is_ignoring_warnings() const { return ignore_warnings; }
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#endif // DEBUG_ENABLED
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};
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class GDScriptTokenizerBuffer : public GDScriptTokenizer {
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enum {
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TOKEN_BYTE_MASK = 0x80,
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TOKEN_BITS = 8,
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TOKEN_MASK = (1 << TOKEN_BITS) - 1,
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TOKEN_LINE_BITS = 24,
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TOKEN_LINE_MASK = (1 << TOKEN_LINE_BITS) - 1,
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};
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Vector<StringName> identifiers;
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Vector<Variant> constants;
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VMap<uint32_t, uint32_t> lines;
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Vector<uint32_t> tokens;
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Variant nil;
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int token;
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public:
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Error set_code_buffer(const Vector<uint8_t> &p_buffer);
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static Vector<uint8_t> parse_code_string(const String &p_code);
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virtual Token get_token(int p_offset = 0) const;
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virtual StringName get_token_identifier(int p_offset = 0) const;
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virtual GDScriptFunctions::Function get_token_built_in_func(int p_offset = 0) const;
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virtual Variant::Type get_token_type(int p_offset = 0) const;
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virtual int get_token_line(int p_offset = 0) const;
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virtual int get_token_column(int p_offset = 0) const;
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virtual int get_token_line_indent(int p_offset = 0) const;
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virtual int get_token_line_tab_indent(int p_offset = 0) const { return 0; }
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virtual const Variant &get_token_constant(int p_offset = 0) const;
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virtual String get_token_error(int p_offset = 0) const;
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virtual void advance(int p_amount = 1);
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#ifdef DEBUG_ENABLED
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virtual const Vector<Pair<int, String> > &get_warning_skips() const {
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static Vector<Pair<int, String> > v;
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return v;
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}
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virtual const Set<String> &get_warning_global_skips() const {
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static Set<String> s;
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return s;
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}
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virtual bool is_ignoring_warnings() const { return true; }
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#endif // DEBUG_ENABLED
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GDScriptTokenizerBuffer();
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};
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#endif // GDSCRIPT_TOKENIZER_H
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