cf4079cb5f
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.
152 lines
7.8 KiB
C++
152 lines
7.8 KiB
C++
/*************************************************************************/
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/* gdscript_compiler.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) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 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_COMPILER_H
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#define GDSCRIPT_COMPILER_H
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#include "core/templates/set.h"
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#include "gdscript.h"
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#include "gdscript_codegen.h"
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#include "gdscript_function.h"
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#include "gdscript_parser.h"
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class GDScriptCompiler {
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const GDScriptParser *parser = nullptr;
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Set<GDScript *> parsed_classes;
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Set<GDScript *> parsing_classes;
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GDScript *main_script = nullptr;
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struct CodeGen {
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GDScript *script = nullptr;
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const GDScriptParser::ClassNode *class_node = nullptr;
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const GDScriptParser::FunctionNode *function_node = nullptr;
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StringName function_name;
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GDScriptCodeGenerator *generator = nullptr;
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Map<StringName, GDScriptCodeGenerator::Address> parameters;
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Map<StringName, GDScriptCodeGenerator::Address> locals;
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List<Map<StringName, GDScriptCodeGenerator::Address>> locals_stack;
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GDScriptCodeGenerator::Address add_local(const StringName &p_name, const GDScriptDataType &p_type) {
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uint32_t addr = generator->add_local(p_name, p_type);
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locals[p_name] = GDScriptCodeGenerator::Address(GDScriptCodeGenerator::Address::LOCAL_VARIABLE, addr, p_type);
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return locals[p_name];
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}
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GDScriptCodeGenerator::Address add_local_constant(const StringName &p_name, const Variant &p_value) {
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uint32_t addr = generator->add_local_constant(p_name, p_value);
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locals[p_name] = GDScriptCodeGenerator::Address(GDScriptCodeGenerator::Address::CONSTANT, addr);
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return locals[p_name];
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}
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GDScriptCodeGenerator::Address add_temporary(const GDScriptDataType &p_type = GDScriptDataType()) {
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uint32_t addr = generator->add_temporary();
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return GDScriptCodeGenerator::Address(GDScriptCodeGenerator::Address::TEMPORARY, addr, p_type);
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}
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GDScriptCodeGenerator::Address add_constant(const Variant &p_constant) {
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GDScriptDataType type;
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type.has_type = true;
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type.kind = GDScriptDataType::BUILTIN;
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type.builtin_type = p_constant.get_type();
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if (type.builtin_type == Variant::OBJECT) {
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Object *obj = p_constant;
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if (obj) {
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type.kind = GDScriptDataType::NATIVE;
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type.native_type = obj->get_class_name();
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Ref<Script> script = obj->get_script();
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if (script.is_valid()) {
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type.script_type = script.ptr();
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Ref<GDScript> gdscript = script;
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if (gdscript.is_valid()) {
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type.kind = GDScriptDataType::GDSCRIPT;
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} else {
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type.kind = GDScriptDataType::SCRIPT;
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}
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}
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} else {
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type.builtin_type = Variant::NIL;
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}
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}
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uint32_t addr = generator->add_or_get_constant(p_constant);
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return GDScriptCodeGenerator::Address(GDScriptCodeGenerator::Address::CONSTANT, addr, type);
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}
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void start_block() {
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Map<StringName, GDScriptCodeGenerator::Address> old_locals = locals;
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locals_stack.push_back(old_locals);
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generator->start_block();
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}
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void end_block() {
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locals = locals_stack.back()->get();
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locals_stack.pop_back();
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generator->end_block();
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}
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};
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bool _is_class_member_property(CodeGen &codegen, const StringName &p_name);
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bool _is_class_member_property(GDScript *owner, const StringName &p_name);
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void _set_error(const String &p_error, const GDScriptParser::Node *p_node);
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Error _create_binary_operator(CodeGen &codegen, const GDScriptParser::BinaryOpNode *on, Variant::Operator op, bool p_initializer = false, const GDScriptCodeGenerator::Address &p_index_addr = GDScriptCodeGenerator::Address());
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Error _create_binary_operator(CodeGen &codegen, const GDScriptParser::ExpressionNode *p_left_operand, const GDScriptParser::ExpressionNode *p_right_operand, Variant::Operator op, bool p_initializer = false, const GDScriptCodeGenerator::Address &p_index_addr = GDScriptCodeGenerator::Address());
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GDScriptDataType _gdtype_from_datatype(const GDScriptParser::DataType &p_datatype, GDScript *p_owner = nullptr) const;
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GDScriptCodeGenerator::Address _parse_assign_right_expression(CodeGen &codegen, Error &r_error, const GDScriptParser::AssignmentNode *p_assignmentint, const GDScriptCodeGenerator::Address &p_index_addr = GDScriptCodeGenerator::Address());
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GDScriptCodeGenerator::Address _parse_expression(CodeGen &codegen, Error &r_error, const GDScriptParser::ExpressionNode *p_expression, bool p_root = false, bool p_initializer = false, const GDScriptCodeGenerator::Address &p_index_addr = GDScriptCodeGenerator::Address());
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GDScriptCodeGenerator::Address _parse_match_pattern(CodeGen &codegen, Error &r_error, const GDScriptParser::PatternNode *p_pattern, const GDScriptCodeGenerator::Address &p_value_addr, const GDScriptCodeGenerator::Address &p_type_addr, const GDScriptCodeGenerator::Address &p_previous_test, bool p_is_first, bool p_is_nested);
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void _add_locals_in_block(CodeGen &codegen, const GDScriptParser::SuiteNode *p_block);
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Error _parse_block(CodeGen &codegen, const GDScriptParser::SuiteNode *p_block, bool p_add_locals = true);
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Error _parse_function(GDScript *p_script, const GDScriptParser::ClassNode *p_class, const GDScriptParser::FunctionNode *p_func, bool p_for_ready = false);
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Error _parse_setter_getter(GDScript *p_script, const GDScriptParser::ClassNode *p_class, const GDScriptParser::VariableNode *p_variable, bool p_is_setter);
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Error _parse_class_level(GDScript *p_script, const GDScriptParser::ClassNode *p_class, bool p_keep_state);
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Error _parse_class_blocks(GDScript *p_script, const GDScriptParser::ClassNode *p_class, bool p_keep_state);
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void _make_scripts(GDScript *p_script, const GDScriptParser::ClassNode *p_class, bool p_keep_state);
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int err_line = 0;
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int err_column = 0;
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StringName source;
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String error;
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bool within_await = false;
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public:
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Error compile(const GDScriptParser *p_parser, GDScript *p_script, bool p_keep_state = false);
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String get_error() const;
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int get_error_line() const;
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int get_error_column() const;
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GDScriptCompiler();
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};
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#endif // GDSCRIPT_COMPILER_H
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