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godot/modules/gdscript/gdscript_codegen.h

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Add GDScript code generation interface Implement the abstraction by targeting the current VM.
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/*************************************************************************/
/* gdscript_codegen.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
Update copyright statements to 2021 Happy new year to the wonderful Godot community! 2020 has been a tough year for most of us personally, but a good year for Godot development nonetheless with a huge amount of work done towards Godot 4.0 and great improvements backported to the long-lived 3.2 branch. We've had close to 400 contributors to engine code this year, authoring near 7,000 commit! (And that's only for the `master` branch and for the engine code, there's a lot more when counting docs, demos and other first-party repos.) Here's to a great year 2021 for all Godot users 🎆
2021-01-01 20:13:46 +01:00
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
Add GDScript code generation interface Implement the abstraction by targeting the current VM.
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/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifndef GDSCRIPT_CODEGEN
#define GDSCRIPT_CODEGEN
#include "core/io/multiplayer_api.h"
Reorganized core/ directory, it was too fatty already -Removed FuncRef, since Callable makes it obsolete -Removed int_types.h as its obsolete in c++11+ -Changed color names code
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#include "core/string/string_name.h"
#include "core/variant/variant.h"
Add GDScript code generation interface Implement the abstraction by targeting the current VM.
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#include "gdscript_function.h"
GDScript: Refactor builtin functions They are now called "utility functions" to avoid confusion with methods of builtin types, and be consistent with the naming in Variant. Core utility functions are now available in GDScript. The ones missing in core are added specifically to GDScript as helpers for convenience. Some functions were remove when there are better ways to do, reducing redundancy and cleaning up the global scope.
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#include "gdscript_utility_functions.h"
Add GDScript code generation interface Implement the abstraction by targeting the current VM.
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class GDScriptCodeGenerator {
public:
struct Address {
enum AddressMode {
SELF,
CLASS,
MEMBER,
CONSTANT,
LOCAL_VARIABLE,
FUNCTION_PARAMETER,
TEMPORARY,
NIL,
};
AddressMode mode = NIL;
uint32_t address = 0;
GDScriptDataType type;
Address() {}
Address(AddressMode p_mode, const GDScriptDataType &p_type = GDScriptDataType()) {
mode = p_mode;
type = p_type;
}
Address(AddressMode p_mode, uint32_t p_address, const GDScriptDataType &p_type = GDScriptDataType()) {
mode = p_mode,
address = p_address;
type = p_type;
}
};
virtual uint32_t add_parameter(const StringName &p_name, bool p_is_optional, const GDScriptDataType &p_type) = 0;
virtual uint32_t add_local(const StringName &p_name, const GDScriptDataType &p_type) = 0;
virtual uint32_t add_local_constant(const StringName &p_name, const Variant &p_constant) = 0;
virtual uint32_t add_or_get_constant(const Variant &p_constant) = 0;
virtual uint32_t add_or_get_name(const StringName &p_name) = 0;
GDScript: Pool temporary values by type on the stack So the stack slots perform less type changes, which is useful for future optimizations.
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virtual uint32_t add_temporary(const GDScriptDataType &p_type) = 0;
Add GDScript code generation interface Implement the abstraction by targeting the current VM.
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virtual void pop_temporary() = 0;
virtual void start_parameters() = 0;
virtual void end_parameters() = 0;
virtual void start_block() = 0;
virtual void end_block() = 0;
virtual void write_start(GDScript *p_script, const StringName &p_function_name, bool p_static, MultiplayerAPI::RPCMode p_rpc_mode, const GDScriptDataType &p_return_type) = 0;
virtual GDScriptFunction *write_end() = 0;
#ifdef DEBUG_ENABLED
virtual void set_signature(const String &p_signature) = 0;
#endif
virtual void set_initial_line(int p_line) = 0;
GDScript: Adjust type of temporaries when needed
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virtual void write_type_adjust(const Address &p_target, Variant::Type p_new_type) = 0;
GDScript: Improve handling of operators - Use the new functions in Variant to determine the validity and resulting type of operators. - Split the operator function in codegen between binary and unary, since the unary ones have now a special requirement of having the second argument to be the NIL type when requesting info.
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virtual void write_unary_operator(const Address &p_target, Variant::Operator p_operator, const Address &p_left_operand) = 0;
virtual void write_binary_operator(const Address &p_target, Variant::Operator p_operator, const Address &p_left_operand, const Address &p_right_operand) = 0;
Add GDScript code generation interface Implement the abstraction by targeting the current VM.
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virtual void write_type_test(const Address &p_target, const Address &p_source, const Address &p_type) = 0;
virtual void write_type_test_builtin(const Address &p_target, const Address &p_source, Variant::Type p_type) = 0;
virtual void write_and_left_operand(const Address &p_left_operand) = 0;
virtual void write_and_right_operand(const Address &p_right_operand) = 0;
virtual void write_end_and(const Address &p_target) = 0;
virtual void write_or_left_operand(const Address &p_left_operand) = 0;
virtual void write_or_right_operand(const Address &p_right_operand) = 0;
virtual void write_end_or(const Address &p_target) = 0;
virtual void write_start_ternary(const Address &p_target) = 0;
virtual void write_ternary_condition(const Address &p_condition) = 0;
virtual void write_ternary_true_expr(const Address &p_expr) = 0;
virtual void write_ternary_false_expr(const Address &p_expr) = 0;
virtual void write_end_ternary() = 0;
virtual void write_set(const Address &p_target, const Address &p_index, const Address &p_source) = 0;
virtual void write_get(const Address &p_target, const Address &p_index, const Address &p_source) = 0;
virtual void write_set_named(const Address &p_target, const StringName &p_name, const Address &p_source) = 0;
virtual void write_get_named(const Address &p_target, const StringName &p_name, const Address &p_source) = 0;
virtual void write_set_member(const Address &p_value, const StringName &p_name) = 0;
virtual void write_get_member(const Address &p_target, const StringName &p_name) = 0;
virtual void write_assign(const Address &p_target, const Address &p_source) = 0;
virtual void write_assign_true(const Address &p_target) = 0;
virtual void write_assign_false(const Address &p_target) = 0;
GDScript default argument override bug fix Fix: #41766
2020-09-05 03:16:23 +05:30
virtual void write_assign_default_parameter(const Address &dst, const Address &src) = 0;
Reduce number of addressing modes in GDScript VM There's now only 3 addressing modes: stack, constant, and member. Self, class, and nil are now present respectively in the first 3 stack slots. Global and class constants are moved to local constants when compiling. Named globals is only present on editor to use on tool singletons, so its use now emits a new instruction to copy the global to the stack. This allow us to further optimize the VM later by embedding the addressing modes in the instructions themselves, which is better done with less permutations.
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virtual void write_store_named_global(const Address &p_dst, const StringName &p_global) = 0;
Add GDScript code generation interface Implement the abstraction by targeting the current VM.
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virtual void write_cast(const Address &p_target, const Address &p_source, const GDScriptDataType &p_type) = 0;
virtual void write_call(const Address &p_target, const Address &p_base, const StringName &p_function_name, const Vector<Address> &p_arguments) = 0;
virtual void write_super_call(const Address &p_target, const StringName &p_function_name, const Vector<Address> &p_arguments) = 0;
virtual void write_call_async(const Address &p_target, const Address &p_base, const StringName &p_function_name, const Vector<Address> &p_arguments) = 0;
GDScript: Refactor builtin functions They are now called "utility functions" to avoid confusion with methods of builtin types, and be consistent with the naming in Variant. Core utility functions are now available in GDScript. The ones missing in core are added specifically to GDScript as helpers for convenience. Some functions were remove when there are better ways to do, reducing redundancy and cleaning up the global scope.
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virtual void write_call_utility(const Address &p_target, const StringName &p_function, const Vector<Address> &p_arguments) = 0;
virtual void write_call_gdscript_utility(const Address &p_target, GDScriptUtilityFunctions::FunctionPtr p_function, const Vector<Address> &p_arguments) = 0;
GDScript: Add faster call instructions for builtin methods Methods from builtin types can be called by using the function pointer when the argument and base types are known at compile time.
2020-11-18 10:32:28 -03:00
virtual void write_call_builtin_type(const Address &p_target, const Address &p_base, Variant::Type p_type, const StringName &p_method, const Vector<Address> &p_arguments) = 0;
GDScript: Add faster call instructions for native methods
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virtual void write_call_method_bind(const Address &p_target, const Address &p_base, MethodBind *p_method, const Vector<Address> &p_arguments) = 0;
virtual void write_call_ptrcall(const Address &p_target, const Address &p_base, MethodBind *p_method, const Vector<Address> &p_arguments) = 0;
Add GDScript code generation interface Implement the abstraction by targeting the current VM.
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virtual void write_call_self(const Address &p_target, const StringName &p_function_name, const Vector<Address> &p_arguments) = 0;
Fix error when calling coroutine with await in _ready The code paths for calling async functions seemed to be missing in some cases, causing a debug break and false positive error.
2020-12-04 16:42:45 -07:00
virtual void write_call_self_async(const Address &p_target, const StringName &p_function_name, const Vector<Address> &p_arguments) = 0;
Add GDScript code generation interface Implement the abstraction by targeting the current VM.
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virtual void write_call_script_function(const Address &p_target, const Address &p_base, const StringName &p_function_name, const Vector<Address> &p_arguments) = 0;
GDScript: Implement lambdas compilation and runtime
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virtual void write_lambda(const Address &p_target, GDScriptFunction *p_function, const Vector<Address> &p_captures) = 0;
Add GDScript code generation interface Implement the abstraction by targeting the current VM.
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virtual void write_construct(const Address &p_target, Variant::Type p_type, const Vector<Address> &p_arguments) = 0;
virtual void write_construct_array(const Address &p_target, const Vector<Address> &p_arguments) = 0;
Add typed arrays to GDScript - Use `Array[type]` for type-hints. e.g.: `var array: Array[int] = [1, 2, 3]` - Array literals are typed if their storage is typed (variable asssignment of as argument in function all). Otherwise they are untyped.
2021-03-09 12:32:35 -03:00
virtual void write_construct_typed_array(const Address &p_target, const GDScriptDataType &p_element_type, const Vector<Address> &p_arguments) = 0;
Add GDScript code generation interface Implement the abstraction by targeting the current VM.
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virtual void write_construct_dictionary(const Address &p_target, const Vector<Address> &p_arguments) = 0;
virtual void write_await(const Address &p_target, const Address &p_operand) = 0;
virtual void write_if(const Address &p_condition) = 0;
virtual void write_else() = 0;
virtual void write_endif() = 0;
GDScript: Fix mishandling of stack pointers - Replace the for loop temporaries by locals. They cause conflicts with the stack when being popped, while locals are properly handled in the scope. - Change the interface for the codegen so the for loop list doesn't live through the whole block if it's a temporary. - Keep track of the actual amount of local variables in the stack. Using the size of the map is misleading in cases where multiple locals have the same name (which is allowed when there's no shadowing). - Added a few debug checks for temporaries, to avoid them being wrongly manipulated in the future. They should not live more than a line of code. - Rearrange some of compiler code to make sure the temporaries don't live across blocks.
2020-11-22 12:24:40 -03:00
virtual void start_for(const GDScriptDataType &p_iterator_type, const GDScriptDataType &p_list_type) = 0;
virtual void write_for_assignment(const Address &p_variable, const Address &p_list) = 0;
virtual void write_for() = 0;
Add GDScript code generation interface Implement the abstraction by targeting the current VM.
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virtual void write_endfor() = 0;
virtual void start_while_condition() = 0; // Used to allow a jump to the expression evaluation.
virtual void write_while(const Address &p_condition) = 0;
virtual void write_endwhile() = 0;
virtual void start_match() = 0;
virtual void start_match_branch() = 0;
virtual void end_match() = 0;
virtual void write_break() = 0;
virtual void write_continue() = 0;
virtual void write_continue_match() = 0;
virtual void write_breakpoint() = 0;
virtual void write_newline(int p_line) = 0;
virtual void write_return(const Address &p_return_value) = 0;
virtual void write_assert(const Address &p_test, const Address &p_message) = 0;
virtual ~GDScriptCodeGenerator() {}
};
#endif // GDSCRIPT_CODEGEN
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