a7f49ac9a1
Happy new year to the wonderful Godot community! We're starting a new decade with a well-established, non-profit, free and open source game engine, and tons of further improvements in the pipeline from hundreds of contributors. Godot will keep getting better, and we're looking forward to all the games that the community will keep developing and releasing with it.
170 lines
6.5 KiB
C++
170 lines
6.5 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) 2007-2020 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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#ifndef GDSCRIPT_COMPILER_H
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#define GDSCRIPT_COMPILER_H
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#include "core/set.h"
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#include "gdscript.h"
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#include "gdscript_parser.h"
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class GDScriptCompiler {
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const GDScriptParser *parser;
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Set<GDScript *> parsed_classes;
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Set<GDScript *> parsing_classes;
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GDScript *main_script;
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struct CodeGen {
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GDScript *script;
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const GDScriptParser::ClassNode *class_node;
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const GDScriptParser::FunctionNode *function_node;
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bool debug_stack;
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List<Map<StringName, int> > stack_id_stack;
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Map<StringName, int> stack_identifiers;
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List<GDScriptFunction::StackDebug> stack_debug;
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List<Map<StringName, int> > block_identifier_stack;
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Map<StringName, int> block_identifiers;
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void add_stack_identifier(const StringName &p_id, int p_stackpos) {
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stack_identifiers[p_id] = p_stackpos;
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if (debug_stack) {
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block_identifiers[p_id] = p_stackpos;
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GDScriptFunction::StackDebug sd;
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sd.added = true;
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sd.line = current_line;
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sd.identifier = p_id;
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sd.pos = p_stackpos;
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stack_debug.push_back(sd);
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}
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}
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void push_stack_identifiers() {
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stack_id_stack.push_back(stack_identifiers);
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if (debug_stack) {
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block_identifier_stack.push_back(block_identifiers);
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block_identifiers.clear();
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}
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}
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void pop_stack_identifiers() {
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stack_identifiers = stack_id_stack.back()->get();
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stack_id_stack.pop_back();
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if (debug_stack) {
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for (Map<StringName, int>::Element *E = block_identifiers.front(); E; E = E->next()) {
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GDScriptFunction::StackDebug sd;
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sd.added = false;
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sd.identifier = E->key();
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sd.line = current_line;
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sd.pos = E->get();
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stack_debug.push_back(sd);
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}
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block_identifiers = block_identifier_stack.back()->get();
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block_identifier_stack.pop_back();
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}
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}
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HashMap<Variant, int, VariantHasher, VariantComparator> constant_map;
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Map<StringName, int> name_map;
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#ifdef TOOLS_ENABLED
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Vector<StringName> named_globals;
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#endif
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int get_name_map_pos(const StringName &p_identifier) {
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int ret;
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if (!name_map.has(p_identifier)) {
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ret = name_map.size();
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name_map[p_identifier] = ret;
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} else {
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ret = name_map[p_identifier];
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}
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return ret;
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}
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int get_constant_pos(const Variant &p_constant) {
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if (constant_map.has(p_constant))
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return constant_map[p_constant];
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int pos = constant_map.size();
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constant_map[p_constant] = pos;
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return pos;
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}
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Vector<int> opcodes;
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void alloc_stack(int p_level) {
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if (p_level >= stack_max) stack_max = p_level + 1;
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}
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void alloc_call(int p_params) {
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if (p_params >= call_max) call_max = p_params;
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}
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int current_line;
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int stack_max;
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int call_max;
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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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bool _create_unary_operator(CodeGen &codegen, const GDScriptParser::OperatorNode *on, Variant::Operator op, int p_stack_level);
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bool _create_binary_operator(CodeGen &codegen, const GDScriptParser::OperatorNode *on, Variant::Operator op, int p_stack_level, bool p_initializer = false);
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GDScriptDataType _gdtype_from_datatype(const GDScriptParser::DataType &p_datatype) const;
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int _parse_assign_right_expression(CodeGen &codegen, const GDScriptParser::OperatorNode *p_expression, int p_stack_level);
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int _parse_expression(CodeGen &codegen, const GDScriptParser::Node *p_expression, int p_stack_level, bool p_root = false, bool p_initializer = false);
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Error _parse_block(CodeGen &codegen, const GDScriptParser::BlockNode *p_block, int p_stack_level = 0, int p_break_addr = -1, int p_continue_addr = -1);
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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_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;
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int err_column;
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StringName source;
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String error;
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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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