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Diffstat (limited to 'modules/gdscript/gdscript_compiler.h')
| -rw-r--r-- | modules/gdscript/gdscript_compiler.h | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/modules/gdscript/gdscript_compiler.h b/modules/gdscript/gdscript_compiler.h new file mode 100644 index 0000000000..6e0457ba30 --- /dev/null +++ b/modules/gdscript/gdscript_compiler.h @@ -0,0 +1,157 @@ +/*************************************************************************/ +/* 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 |