/*************************************************************************/ /* gdscript_compiler.h */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */ /* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */ /* */ /* 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_COMPILER_H #define GDSCRIPT_COMPILER_H #include "gdscript.h" #include "gdscript_parser.h" class GDScriptCompiler { const GDScriptParser *parser; struct CodeGen { GDScript *script; const GDScriptParser::ClassNode *class_node; const GDScriptParser::FunctionNode *function_node; bool debug_stack; List<Map<StringName, int> > stack_id_stack; Map<StringName, int> stack_identifiers; List<GDScriptFunction::StackDebug> stack_debug; List<Map<StringName, int> > block_identifier_stack; Map<StringName, int> block_identifiers; void add_stack_identifier(const StringName &p_id, int p_stackpos) { stack_identifiers[p_id] = p_stackpos; if (debug_stack) { block_identifiers[p_id] = p_stackpos; GDScriptFunction::StackDebug sd; sd.added = true; sd.line = current_line; sd.identifier = p_id; sd.pos = p_stackpos; stack_debug.push_back(sd); } } void push_stack_identifiers() { stack_id_stack.push_back(stack_identifiers); if (debug_stack) { block_identifier_stack.push_back(block_identifiers); block_identifiers.clear(); } } void pop_stack_identifiers() { stack_identifiers = stack_id_stack.back()->get(); stack_id_stack.pop_back(); if (debug_stack) { for (Map<StringName, int>::Element *E = block_identifiers.front(); E; E = E->next()) { GDScriptFunction::StackDebug sd; sd.added = false; sd.identifier = E->key(); sd.line = current_line; sd.pos = E->get(); stack_debug.push_back(sd); } block_identifiers = block_identifier_stack.back()->get(); block_identifier_stack.pop_back(); } } HashMap<Variant, int, VariantHasher, VariantComparator> constant_map; Map<StringName, int> name_map; int get_name_map_pos(const StringName &p_identifier) { int ret; if (!name_map.has(p_identifier)) { ret = name_map.size(); name_map[p_identifier] = ret; } else { ret = name_map[p_identifier]; } return ret; } int get_constant_pos(const Variant &p_constant) { if (constant_map.has(p_constant)) return constant_map[p_constant]; int pos = constant_map.size(); constant_map[p_constant] = pos; return pos; } Vector<int> opcodes; void alloc_stack(int p_level) { if (p_level >= stack_max) stack_max = p_level + 1; } void alloc_call(int p_params) { if (p_params >= call_max) call_max = p_params; } int current_line; int stack_max; int call_max; }; bool _is_class_member_property(CodeGen &codegen, const StringName &p_name); bool _is_class_member_property(GDScript *owner, const StringName &p_name); void _set_error(const String &p_error, const GDScriptParser::Node *p_node); bool _create_unary_operator(CodeGen &codegen, const GDScriptParser::OperatorNode *on, Variant::Operator op, int p_stack_level); bool _create_binary_operator(CodeGen &codegen, const GDScriptParser::OperatorNode *on, Variant::Operator op, int p_stack_level, bool p_initializer = false); int _parse_assign_right_expression(CodeGen &codegen, const GDScriptParser::OperatorNode *p_expression, int p_stack_level); int _parse_expression(CodeGen &codegen, const GDScriptParser::Node *p_expression, int p_stack_level, bool p_root = false, bool p_initializer = false); 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); Error _parse_function(GDScript *p_script, const GDScriptParser::ClassNode *p_class, const GDScriptParser::FunctionNode *p_func, bool p_for_ready = false); Error _parse_class(GDScript *p_script, GDScript *p_owner, const GDScriptParser::ClassNode *p_class, bool p_keep_state); int err_line; int err_column; StringName source; String error; public: Error compile(const GDScriptParser *p_parser, GDScript *p_script, bool p_keep_state = false); String get_error() const; int get_error_line() const; int get_error_column() const; GDScriptCompiler(); }; #endif // GDSCRIPT_COMPILER_H