166 lines
6.5 KiB
C++
166 lines
6.5 KiB
C++
/*************************************************************************/
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/* gd_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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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2015 Juan Linietsky, Ariel Manzur. */
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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 GD_COMPILER_H
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#define GD_COMPILER_H
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#include "gd_parser.h"
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#include "gd_script.h"
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class GDCompiler {
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const GDParser *parser;
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struct CodeGen {
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GDScript *script;
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const GDParser::ClassNode *class_node;
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const GDParser::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<GDFunction::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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GDFunction::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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GDFunction::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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//int get_identifier_pos(const StringName& p_dentifier) const;
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HashMap<Variant,int,VariantHasher> constant_map;
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Map<StringName,int> name_map;
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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) { if (p_level >= stack_max) stack_max=p_level+1; }
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void alloc_call(int p_params) { if (p_params >= call_max) call_max=p_params; }
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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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#if 0
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void _create_index(const GDParser::OperatorNode *on);
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void _create_call(const GDParser::OperatorNode *on);
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int _parse_expression(const GDParser::Node *p_expr,CodeGen& codegen);
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void _parse_block(GDParser::BlockNode *p_block);
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void _parse_function(GDParser::FunctionNode *p_func);
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Ref<GDScript> _parse_class(GDParser::ClassNode *p_class);
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#endif
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void _set_error(const String& p_error,const GDParser::Node *p_node);
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bool _create_unary_operator(CodeGen& codegen,const GDParser::OperatorNode *on,Variant::Operator op, int p_stack_level);
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bool _create_binary_operator(CodeGen& codegen,const GDParser::OperatorNode *on,Variant::Operator op, int p_stack_level,bool p_initializer=false);
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//int _parse_subexpression(CodeGen& codegen,const GDParser::BlockNode *p_block,const GDParser::Node *p_expression);
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int _parse_assign_right_expression(CodeGen& codegen,const GDParser::OperatorNode *p_expression, int p_stack_level);
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int _parse_expression(CodeGen& codegen,const GDParser::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 GDParser::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 GDParser::ClassNode *p_class,const GDParser::FunctionNode *p_func);
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Error _parse_class(GDScript *p_script,GDScript *p_owner,const GDParser::ClassNode *p_class);
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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 GDParser *p_parser,GDScript *p_script);
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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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GDCompiler();
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};
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#endif // COMPILER_H
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