8c1731b679
-load() was in the GDScript docs but missing in the scripting-different music for platformer 2D and 3D -fix how documentation is generated, built in doc browser should be always up to date -copypaste, scrolling, etc in builtin doc -built-in scripts get saved now (though debugger may not always work on them) -Theme can be set to controls as a property
2469 lines
64 KiB
C++
2469 lines
64 KiB
C++
/*************************************************************************/
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/* gd_parser.cpp */
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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) 2007-2014 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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#include "gd_parser.h"
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#include "print_string.h"
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#include "io/resource_loader.h"
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/* TODO:
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*Property reduce constant expressions
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*Implement missing operators in variant?
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*constructor
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*/
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/*
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todo:
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fix post ++,--
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make sure ++,-- don't work on constant expressions
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seems passing parent node as param is not needed
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*/
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template<class T>
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T* GDParser::alloc_node() {
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T *t = memnew( T);
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t->next=list;
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list=t;
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if (!head)
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head=t;
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t->line=tokenizer.get_token_line();
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t->column=tokenizer.get_token_column();
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return t;
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}
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bool GDParser::_end_statement() {
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if (tokenizer.get_token()==GDTokenizer::TK_SEMICOLON) {
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tokenizer.advance();
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return true; //handle next
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} else if (tokenizer.get_token()==GDTokenizer::TK_NEWLINE || tokenizer.get_token()==GDTokenizer::TK_EOF) {
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return true; //will be handled properly
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}
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return false;
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}
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bool GDParser::_enter_indent_block(BlockNode* p_block) {
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if (tokenizer.get_token()!=GDTokenizer::TK_COLON) {
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_set_error("':' expected at end of line.");
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return false;
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}
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tokenizer.advance();
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if (tokenizer.get_token()!=GDTokenizer::TK_NEWLINE) {
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_set_error("newline expected after ':'.");
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return false;
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}
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while(true) {
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if (tokenizer.get_token()!=GDTokenizer::TK_NEWLINE) {
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return false; //wtf
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} else if (tokenizer.get_token(1)!=GDTokenizer::TK_NEWLINE) {
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int indent = tokenizer.get_token_line_indent();
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int current = tab_level.back()->get();
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if (indent<=current)
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return false;
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tab_level.push_back(indent);
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tokenizer.advance();
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return true;
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} else if (p_block) {
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NewLineNode *nl = alloc_node<NewLineNode>();
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nl->line=tokenizer.get_token_line();
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p_block->statements.push_back(nl);
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}
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tokenizer.advance(); // go to next newline
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}
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}
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bool GDParser::_parse_arguments(Node* p_parent,Vector<Node*>& p_args,bool p_static) {
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if (tokenizer.get_token()==GDTokenizer::TK_PARENTHESIS_CLOSE) {
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tokenizer.advance();
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} else {
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while(true) {
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Node*arg = _parse_expression(p_parent,p_static);
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if (!arg)
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return false;
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p_args.push_back(arg);
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if (tokenizer.get_token()==GDTokenizer::TK_PARENTHESIS_CLOSE) {
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tokenizer.advance();
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break;
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} else if (tokenizer.get_token()==GDTokenizer::TK_COMMA) {
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if (tokenizer.get_token(1)==GDTokenizer::TK_PARENTHESIS_CLOSE) {
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_set_error("Expression expected");
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return false;
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}
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tokenizer.advance();
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} else {
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// something is broken
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_set_error("Expected ',' or ')'");
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return false;
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}
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}
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}
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return true;
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}
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GDParser::Node* GDParser::_parse_expression(Node *p_parent,bool p_static,bool p_allow_assign) {
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// Vector<Node*> expressions;
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// Vector<OperatorNode::Operator> operators;
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Vector<Expression> expression;
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Node *expr=NULL;
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while(true) {
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/*****************/
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/* Parse Operand */
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/*****************/
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if (tokenizer.get_token()==GDTokenizer::TK_PARENTHESIS_OPEN) {
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//subexpression ()
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tokenizer.advance();
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Node* subexpr = _parse_expression(p_parent,p_static);
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if (!subexpr)
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return NULL;
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if (tokenizer.get_token()!=GDTokenizer::TK_PARENTHESIS_CLOSE) {
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_set_error("Expected ')' in expression");
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return NULL;
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}
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tokenizer.advance();
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expr=subexpr;
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} else if (tokenizer.get_token()==GDTokenizer::TK_CONSTANT) {
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//constant defined by tokenizer
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ConstantNode *constant = alloc_node<ConstantNode>();
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constant->value=tokenizer.get_token_constant();
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tokenizer.advance();
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expr=constant;
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} else if (tokenizer.get_token()==GDTokenizer::TK_PR_PRELOAD) {
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//constant defined by tokenizer
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tokenizer.advance();
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if (tokenizer.get_token()!=GDTokenizer::TK_PARENTHESIS_OPEN) {
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_set_error("Expected '(' after 'preload'");
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return NULL;
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}
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tokenizer.advance();
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if (tokenizer.get_token()!=GDTokenizer::TK_CONSTANT || tokenizer.get_token_constant().get_type()!=Variant::STRING) {
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_set_error("Expected string constant as 'preload' argument.");
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return NULL;
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}
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String path = tokenizer.get_token_constant();
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if (!path.is_abs_path() && base_path!="")
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path=base_path+"/"+path;
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Ref<Resource> res = ResourceLoader::load(path);
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if (!res.is_valid()) {
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_set_error("Can't preload resource at path: "+path);
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return NULL;
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}
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tokenizer.advance();
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if (tokenizer.get_token()!=GDTokenizer::TK_PARENTHESIS_CLOSE) {
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_set_error("Expected ')' after 'preload' path");
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return NULL;
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}
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ConstantNode *constant = alloc_node<ConstantNode>();
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constant->value=res;
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tokenizer.advance();
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expr=constant;
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} else if (tokenizer.get_token()==GDTokenizer::TK_SELF) {
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if (p_static) {
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_set_error("'self'' not allowed in static function or constant expression");
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return NULL;
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}
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//constant defined by tokenizer
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SelfNode *self = alloc_node<SelfNode>();
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tokenizer.advance();
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expr=self;
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} else if (tokenizer.get_token()==GDTokenizer::TK_BUILT_IN_TYPE && tokenizer.get_token(1)==GDTokenizer::TK_PERIOD) {
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Variant::Type bi_type = tokenizer.get_token_type();
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tokenizer.advance(2);
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if (tokenizer.get_token()!=GDTokenizer::TK_IDENTIFIER) {
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_set_error("Built-in type constant expected after '.'");
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return NULL;
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}
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StringName identifier = tokenizer.get_token_identifier();
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if (!Variant::has_numeric_constant(bi_type,identifier)) {
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_set_error("Static constant '"+identifier.operator String()+"' not present in built-in type "+Variant::get_type_name(bi_type)+".");
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return NULL;
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}
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ConstantNode *cn = alloc_node<ConstantNode>();
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cn->value=Variant::get_numeric_constant_value(bi_type,identifier);
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expr=cn;
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tokenizer.advance();
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} else if (tokenizer.get_token(1)==GDTokenizer::TK_PARENTHESIS_OPEN && (tokenizer.get_token()==GDTokenizer::TK_BUILT_IN_TYPE || tokenizer.get_token()==GDTokenizer::TK_IDENTIFIER || tokenizer.get_token()==GDTokenizer::TK_BUILT_IN_FUNC)) {
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//function or constructor
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OperatorNode *op = alloc_node<OperatorNode>();
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op->op=OperatorNode::OP_CALL;
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if (tokenizer.get_token()==GDTokenizer::TK_BUILT_IN_TYPE) {
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TypeNode *tn = alloc_node<TypeNode>();
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tn->vtype=tokenizer.get_token_type();
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op->arguments.push_back(tn);
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} else if (tokenizer.get_token()==GDTokenizer::TK_BUILT_IN_FUNC) {
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BuiltInFunctionNode *bn = alloc_node<BuiltInFunctionNode>();
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bn->function=tokenizer.get_token_built_in_func();
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op->arguments.push_back(bn);
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} else {
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SelfNode *self = alloc_node<SelfNode>();
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op->arguments.push_back(self);
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IdentifierNode* id = alloc_node<IdentifierNode>();
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id->name=tokenizer.get_token_identifier();
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op->arguments.push_back(id);
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}
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tokenizer.advance(2);
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if (!_parse_arguments(op,op->arguments,p_static))
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return NULL;
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expr=op;
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} else if (tokenizer.get_token()==GDTokenizer::TK_IDENTIFIER) {
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//identifier (reference)
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IdentifierNode *id = alloc_node<IdentifierNode>();
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id->name=tokenizer.get_token_identifier();
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tokenizer.advance();
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expr=id;
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} else if (/*tokenizer.get_token()==GDTokenizer::TK_OP_ADD ||*/ tokenizer.get_token()==GDTokenizer::TK_OP_SUB || tokenizer.get_token()==GDTokenizer::TK_OP_NOT || tokenizer.get_token()==GDTokenizer::TK_OP_BIT_INVERT) {
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//single prefix operators like !expr -expr ++expr --expr
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OperatorNode *op = alloc_node<OperatorNode>();
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Expression e;
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e.is_op=true;
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switch(tokenizer.get_token()) {
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case GDTokenizer::TK_OP_SUB: e.op=OperatorNode::OP_NEG; break;
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case GDTokenizer::TK_OP_NOT: e.op=OperatorNode::OP_NOT; break;
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case GDTokenizer::TK_OP_BIT_INVERT: e.op=OperatorNode::OP_BIT_INVERT;; break;
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default: {}
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}
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tokenizer.advance();
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if (e.op!=OperatorNode::OP_NOT && tokenizer.get_token()==GDTokenizer::TK_OP_NOT) {
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_set_error("Misplaced 'not'.");
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return NULL;
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}
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expression.push_back(e);
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continue; //only exception, must continue...
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/*
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Node *subexpr=_parse_expression(op,p_static);
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if (!subexpr)
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return NULL;
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op->arguments.push_back(subexpr);
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expr=op;*/
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} else if (tokenizer.get_token()==GDTokenizer::TK_BRACKET_OPEN) {
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// array
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tokenizer.advance();
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ArrayNode *arr = alloc_node<ArrayNode>();
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bool expecting_comma=false;
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while(true) {
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if (tokenizer.get_token()==GDTokenizer::TK_EOF) {
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_set_error("Unterminated array");
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return NULL;
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} else if (tokenizer.get_token()==GDTokenizer::TK_BRACKET_CLOSE) {
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tokenizer.advance();
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break;
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} else if (tokenizer.get_token()==GDTokenizer::TK_NEWLINE) {
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tokenizer.advance(); //ignore newline
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} else if (tokenizer.get_token()==GDTokenizer::TK_COMMA) {
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if (!expecting_comma) {
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_set_error("expression or ']' expected");
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return NULL;
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}
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expecting_comma=false;
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tokenizer.advance(); //ignore newline
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} else {
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//parse expression
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if (expecting_comma) {
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_set_error("',' or ']' expected");
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return NULL;
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}
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Node *n = _parse_expression(arr,p_static);
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if (!n)
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return NULL;
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arr->elements.push_back(n);
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expecting_comma=true;
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}
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}
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expr=arr;
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} else if (tokenizer.get_token()==GDTokenizer::TK_CURLY_BRACKET_OPEN) {
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// array
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tokenizer.advance();
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DictionaryNode *dict = alloc_node<DictionaryNode>();
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enum DictExpect {
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DICT_EXPECT_KEY,
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DICT_EXPECT_COLON,
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DICT_EXPECT_VALUE,
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DICT_EXPECT_COMMA
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};
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Node *key=NULL;
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DictExpect expecting=DICT_EXPECT_KEY;
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while(true) {
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if (tokenizer.get_token()==GDTokenizer::TK_EOF) {
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_set_error("Unterminated dictionary");
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return NULL;
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} else if (tokenizer.get_token()==GDTokenizer::TK_CURLY_BRACKET_CLOSE) {
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if (expecting==DICT_EXPECT_COLON) {
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_set_error("':' expected");
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return NULL;
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}
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if (expecting==DICT_EXPECT_VALUE) {
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_set_error("value expected");
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return NULL;
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}
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tokenizer.advance();
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break;
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} else if (tokenizer.get_token()==GDTokenizer::TK_NEWLINE) {
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tokenizer.advance(); //ignore newline
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} else if (tokenizer.get_token()==GDTokenizer::TK_COMMA) {
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if (expecting==DICT_EXPECT_KEY) {
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_set_error("key or '}' expected");
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return NULL;
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}
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if (expecting==DICT_EXPECT_VALUE) {
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_set_error("value expected");
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return NULL;
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}
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if (expecting==DICT_EXPECT_COLON) {
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_set_error("':' expected");
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return NULL;
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}
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expecting=DICT_EXPECT_KEY;
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tokenizer.advance(); //ignore newline
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} else if (tokenizer.get_token()==GDTokenizer::TK_COLON) {
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if (expecting==DICT_EXPECT_KEY) {
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_set_error("key or '}' expected");
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return NULL;
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}
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if (expecting==DICT_EXPECT_VALUE) {
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_set_error("value expected");
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return NULL;
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}
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if (expecting==DICT_EXPECT_COMMA) {
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_set_error("',' or '}' expected");
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return NULL;
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}
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expecting=DICT_EXPECT_VALUE;
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tokenizer.advance(); //ignore newline
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} else {
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if (expecting==DICT_EXPECT_COMMA) {
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_set_error("',' or '}' expected");
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return NULL;
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}
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if (expecting==DICT_EXPECT_COLON) {
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_set_error("':' expected");
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return NULL;
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}
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if (expecting==DICT_EXPECT_KEY) {
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if (tokenizer.get_token()==GDTokenizer::TK_IDENTIFIER && tokenizer.get_token(1)==GDTokenizer::TK_OP_ASSIGN) {
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//lua style identifier, easier to write
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ConstantNode *cn = alloc_node<ConstantNode>();
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cn->value = tokenizer.get_token_identifier();
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key = cn;
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tokenizer.advance(2);
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expecting=DICT_EXPECT_VALUE;
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} else {
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//python/js style more flexible
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key = _parse_expression(dict,p_static);
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if (!key)
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return NULL;
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expecting=DICT_EXPECT_COLON;
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}
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}
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if (expecting==DICT_EXPECT_VALUE) {
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Node *value = _parse_expression(dict,p_static);
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if (!value)
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return NULL;
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expecting=DICT_EXPECT_COMMA;
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DictionaryNode::Pair pair;
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pair.key=key;
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pair.value=value;
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dict->elements.push_back(pair);
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key=NULL;
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}
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}
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}
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expr=dict;
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} else if (tokenizer.get_token()==GDTokenizer::TK_PERIOD && tokenizer.get_token(1)==GDTokenizer::TK_IDENTIFIER && tokenizer.get_token(2)==GDTokenizer::TK_PARENTHESIS_OPEN) {
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// parent call
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tokenizer.advance(); //goto identifier
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OperatorNode *op = alloc_node<OperatorNode>();
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op->op=OperatorNode::OP_PARENT_CALL;
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/*SelfNode *self = alloc_node<SelfNode>();
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op->arguments.push_back(self);
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forbidden for now */
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IdentifierNode* id = alloc_node<IdentifierNode>();
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id->name=tokenizer.get_token_identifier();
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op->arguments.push_back(id);
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tokenizer.advance(2);
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if (!_parse_arguments(op,op->arguments,p_static))
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return NULL;
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expr=op;
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} else {
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//find list [ or find dictionary {
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print_line("found bug?");
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_set_error("Error parsing expression, misplaced: "+String(tokenizer.get_token_name(tokenizer.get_token())));
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return NULL; //nothing
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}
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|
|
if (!expr) {
|
|
ERR_EXPLAIN("GDParser bug, couldn't figure out what expression is..");
|
|
ERR_FAIL_COND_V(!expr,NULL);
|
|
}
|
|
|
|
|
|
/******************/
|
|
/* Parse Indexing */
|
|
/******************/
|
|
|
|
|
|
while (true) {
|
|
|
|
//expressions can be indexed any number of times
|
|
|
|
if (tokenizer.get_token()==GDTokenizer::TK_PERIOD) {
|
|
|
|
//indexing using "."
|
|
|
|
if (tokenizer.get_token(1)!=GDTokenizer::TK_IDENTIFIER && tokenizer.get_token(1)!=GDTokenizer::TK_BUILT_IN_FUNC ) {
|
|
_set_error("Expected identifier as member");
|
|
return NULL;
|
|
} else if (tokenizer.get_token(2)==GDTokenizer::TK_PARENTHESIS_OPEN) {
|
|
//call!!
|
|
OperatorNode * op = alloc_node<OperatorNode>();
|
|
op->op=OperatorNode::OP_CALL;
|
|
|
|
IdentifierNode * id = alloc_node<IdentifierNode>();
|
|
if (tokenizer.get_token(1)==GDTokenizer::TK_BUILT_IN_FUNC ) {
|
|
//small hack so built in funcs don't obfuscate methods
|
|
|
|
id->name=GDFunctions::get_func_name(tokenizer.get_token_built_in_func(1));
|
|
} else {
|
|
id->name=tokenizer.get_token_identifier(1);
|
|
}
|
|
|
|
op->arguments.push_back(expr); // call what
|
|
op->arguments.push_back(id); // call func
|
|
//get arguments
|
|
tokenizer.advance(3);
|
|
if (!_parse_arguments(op,op->arguments,p_static))
|
|
return NULL;
|
|
expr=op;
|
|
|
|
} else {
|
|
//simple indexing!
|
|
OperatorNode * op = alloc_node<OperatorNode>();
|
|
op->op=OperatorNode::OP_INDEX_NAMED;
|
|
|
|
IdentifierNode * id = alloc_node<IdentifierNode>();
|
|
id->name=tokenizer.get_token_identifier(1);
|
|
|
|
op->arguments.push_back(expr);
|
|
op->arguments.push_back(id);
|
|
|
|
expr=op;
|
|
|
|
tokenizer.advance(2);
|
|
}
|
|
|
|
} else if (tokenizer.get_token()==GDTokenizer::TK_BRACKET_OPEN) {
|
|
//indexing using "[]"
|
|
OperatorNode * op = alloc_node<OperatorNode>();
|
|
op->op=OperatorNode::OP_INDEX;
|
|
|
|
tokenizer.advance(1);
|
|
|
|
Node *subexpr = _parse_expression(op,p_static);
|
|
if (!subexpr) {
|
|
return NULL;
|
|
}
|
|
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_BRACKET_CLOSE) {
|
|
_set_error("Expected ']'");
|
|
return NULL;
|
|
}
|
|
|
|
op->arguments.push_back(expr);
|
|
op->arguments.push_back(subexpr);
|
|
tokenizer.advance(1);
|
|
expr=op;
|
|
|
|
} else
|
|
break;
|
|
}
|
|
|
|
/******************/
|
|
/* Parse Operator */
|
|
/******************/
|
|
|
|
|
|
Expression e;
|
|
e.is_op=false;
|
|
e.node=expr;
|
|
expression.push_back(e);
|
|
|
|
// determine which operator is next
|
|
|
|
OperatorNode::Operator op;
|
|
bool valid=true;
|
|
|
|
//assign, if allowed is only alowed on the first operator
|
|
#define _VALIDATE_ASSIGN if (!p_allow_assign) { _set_error("Unexpected assign."); return NULL; } p_allow_assign=false;
|
|
switch(tokenizer.get_token()) { //see operator
|
|
|
|
case GDTokenizer::TK_OP_IN: op=OperatorNode::OP_IN; break;
|
|
case GDTokenizer::TK_OP_EQUAL: op=OperatorNode::OP_EQUAL ; break;
|
|
case GDTokenizer::TK_OP_NOT_EQUAL: op=OperatorNode::OP_NOT_EQUAL ; break;
|
|
case GDTokenizer::TK_OP_LESS: op=OperatorNode::OP_LESS ; break;
|
|
case GDTokenizer::TK_OP_LESS_EQUAL: op=OperatorNode::OP_LESS_EQUAL ; break;
|
|
case GDTokenizer::TK_OP_GREATER: op=OperatorNode::OP_GREATER ; break;
|
|
case GDTokenizer::TK_OP_GREATER_EQUAL: op=OperatorNode::OP_GREATER_EQUAL ; break;
|
|
case GDTokenizer::TK_OP_AND: op=OperatorNode::OP_AND ; break;
|
|
case GDTokenizer::TK_OP_OR: op=OperatorNode::OP_OR ; break;
|
|
case GDTokenizer::TK_OP_ADD: op=OperatorNode::OP_ADD ; break;
|
|
case GDTokenizer::TK_OP_SUB: op=OperatorNode::OP_SUB ; break;
|
|
case GDTokenizer::TK_OP_MUL: op=OperatorNode::OP_MUL ; break;
|
|
case GDTokenizer::TK_OP_DIV: op=OperatorNode::OP_DIV ; break;
|
|
case GDTokenizer::TK_OP_MOD: op=OperatorNode::OP_MOD ; break;
|
|
//case GDTokenizer::TK_OP_NEG: op=OperatorNode::OP_NEG ; break;
|
|
case GDTokenizer::TK_OP_SHIFT_LEFT: op=OperatorNode::OP_SHIFT_LEFT ; break;
|
|
case GDTokenizer::TK_OP_SHIFT_RIGHT: op=OperatorNode::OP_SHIFT_RIGHT ; break;
|
|
case GDTokenizer::TK_OP_ASSIGN: _VALIDATE_ASSIGN op=OperatorNode::OP_ASSIGN ; break;
|
|
case GDTokenizer::TK_OP_ASSIGN_ADD: _VALIDATE_ASSIGN op=OperatorNode::OP_ASSIGN_ADD ; break;
|
|
case GDTokenizer::TK_OP_ASSIGN_SUB: _VALIDATE_ASSIGN op=OperatorNode::OP_ASSIGN_SUB ; break;
|
|
case GDTokenizer::TK_OP_ASSIGN_MUL: _VALIDATE_ASSIGN op=OperatorNode::OP_ASSIGN_MUL ; break;
|
|
case GDTokenizer::TK_OP_ASSIGN_DIV: _VALIDATE_ASSIGN op=OperatorNode::OP_ASSIGN_DIV ; break;
|
|
case GDTokenizer::TK_OP_ASSIGN_MOD: _VALIDATE_ASSIGN op=OperatorNode::OP_ASSIGN_MOD ; break;
|
|
case GDTokenizer::TK_OP_ASSIGN_SHIFT_LEFT: _VALIDATE_ASSIGN op=OperatorNode::OP_ASSIGN_SHIFT_LEFT; ; break;
|
|
case GDTokenizer::TK_OP_ASSIGN_SHIFT_RIGHT: _VALIDATE_ASSIGN op=OperatorNode::OP_ASSIGN_SHIFT_RIGHT; ; break;
|
|
case GDTokenizer::TK_OP_ASSIGN_BIT_AND: _VALIDATE_ASSIGN op=OperatorNode::OP_ASSIGN_BIT_AND ; break;
|
|
case GDTokenizer::TK_OP_ASSIGN_BIT_OR: _VALIDATE_ASSIGN op=OperatorNode::OP_ASSIGN_BIT_OR ; break;
|
|
case GDTokenizer::TK_OP_ASSIGN_BIT_XOR: _VALIDATE_ASSIGN op=OperatorNode::OP_ASSIGN_BIT_XOR ; break;
|
|
case GDTokenizer::TK_OP_BIT_AND: op=OperatorNode::OP_BIT_AND ; break;
|
|
case GDTokenizer::TK_OP_BIT_OR: op=OperatorNode::OP_BIT_OR ; break;
|
|
case GDTokenizer::TK_OP_BIT_XOR: op=OperatorNode::OP_BIT_XOR ; break;
|
|
case GDTokenizer::TK_PR_EXTENDS: op=OperatorNode::OP_EXTENDS; break;
|
|
default: valid=false; break;
|
|
}
|
|
|
|
if (valid) {
|
|
e.is_op=true;
|
|
e.op=op;
|
|
expression.push_back(e);
|
|
tokenizer.advance();
|
|
} else {
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
/* Reduce the set set of expressions and place them in an operator tree, respecting precedence */
|
|
|
|
|
|
while(expression.size()>1) {
|
|
|
|
int next_op=-1;
|
|
int min_priority=0xFFFFF;
|
|
bool is_unary=false;
|
|
|
|
for(int i=0;i<expression.size();i++) {
|
|
|
|
|
|
|
|
if (!expression[i].is_op) {
|
|
|
|
continue;
|
|
}
|
|
|
|
int priority;
|
|
|
|
bool unary=false;
|
|
|
|
switch(expression[i].op) {
|
|
|
|
case OperatorNode::OP_EXTENDS: priority=-1; break; //before anything
|
|
|
|
case OperatorNode::OP_BIT_INVERT: priority=0; unary=true; break;
|
|
case OperatorNode::OP_NEG: priority=1; unary=true; break;
|
|
|
|
case OperatorNode::OP_MUL: priority=2; break;
|
|
case OperatorNode::OP_DIV: priority=2; break;
|
|
case OperatorNode::OP_MOD: priority=2; break;
|
|
|
|
case OperatorNode::OP_ADD: priority=3; break;
|
|
case OperatorNode::OP_SUB: priority=3; break;
|
|
|
|
case OperatorNode::OP_SHIFT_LEFT: priority=4; break;
|
|
case OperatorNode::OP_SHIFT_RIGHT: priority=4; break;
|
|
|
|
case OperatorNode::OP_BIT_AND: priority=5; break;
|
|
case OperatorNode::OP_BIT_XOR: priority=6; break;
|
|
case OperatorNode::OP_BIT_OR: priority=7; break;
|
|
|
|
case OperatorNode::OP_LESS: priority=8; break;
|
|
case OperatorNode::OP_LESS_EQUAL: priority=8; break;
|
|
case OperatorNode::OP_GREATER: priority=8; break;
|
|
case OperatorNode::OP_GREATER_EQUAL: priority=8; break;
|
|
|
|
case OperatorNode::OP_EQUAL: priority=8; break;
|
|
case OperatorNode::OP_NOT_EQUAL: priority=8; break;
|
|
|
|
case OperatorNode::OP_IN: priority=10; break;
|
|
|
|
case OperatorNode::OP_NOT: priority=11; unary=true; break;
|
|
case OperatorNode::OP_AND: priority=12; break;
|
|
case OperatorNode::OP_OR: priority=13; break;
|
|
|
|
// ?: = 10
|
|
|
|
case OperatorNode::OP_ASSIGN: priority=14; break;
|
|
case OperatorNode::OP_ASSIGN_ADD: priority=14; break;
|
|
case OperatorNode::OP_ASSIGN_SUB: priority=14; break;
|
|
case OperatorNode::OP_ASSIGN_MUL: priority=14; break;
|
|
case OperatorNode::OP_ASSIGN_DIV: priority=14; break;
|
|
case OperatorNode::OP_ASSIGN_MOD: priority=14; break;
|
|
case OperatorNode::OP_ASSIGN_SHIFT_LEFT: priority=14; break;
|
|
case OperatorNode::OP_ASSIGN_SHIFT_RIGHT: priority=14; break;
|
|
case OperatorNode::OP_ASSIGN_BIT_AND: priority=14; break;
|
|
case OperatorNode::OP_ASSIGN_BIT_OR: priority=14; break;
|
|
case OperatorNode::OP_ASSIGN_BIT_XOR: priority=14; break;
|
|
|
|
|
|
default: {
|
|
_set_error("GDParser bug, invalid operator in expression: "+itos(expression[i].op));
|
|
return NULL;
|
|
}
|
|
|
|
}
|
|
|
|
if (priority<min_priority) {
|
|
// < is used for left to right (default)
|
|
// <= is used for right to left
|
|
next_op=i;
|
|
min_priority=priority;
|
|
is_unary=unary;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
if (next_op==-1) {
|
|
|
|
|
|
_set_error("Yet another parser bug....");
|
|
ERR_FAIL_COND_V(next_op==-1,NULL);
|
|
}
|
|
|
|
|
|
// OK! create operator..
|
|
if (is_unary) {
|
|
|
|
int expr_pos=next_op;
|
|
while(expression[expr_pos].is_op) {
|
|
|
|
expr_pos++;
|
|
if (expr_pos==expression.size()) {
|
|
//can happen..
|
|
_set_error("Unexpected end of expression..");
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
//consecutively do unary opeators
|
|
for(int i=expr_pos-1;i>=next_op;i--) {
|
|
|
|
OperatorNode *op = alloc_node<OperatorNode>();
|
|
op->op=expression[i].op;
|
|
op->arguments.push_back(expression[i+1].node);
|
|
expression[i].is_op=false;
|
|
expression[i].node=op;
|
|
expression.remove(i+1);
|
|
}
|
|
|
|
|
|
} else {
|
|
|
|
if (next_op <1 || next_op>=(expression.size()-1)) {
|
|
_set_error("Parser bug..");
|
|
ERR_FAIL_V(NULL);
|
|
}
|
|
|
|
OperatorNode *op = alloc_node<OperatorNode>();
|
|
op->op=expression[next_op].op;
|
|
|
|
if (expression[next_op-1].is_op) {
|
|
|
|
_set_error("Parser bug..");
|
|
ERR_FAIL_V(NULL);
|
|
}
|
|
|
|
if (expression[next_op+1].is_op) {
|
|
// this is not invalid and can really appear
|
|
// but it becomes invalid anyway because no binary op
|
|
// can be followed by an unary op in a valid combination,
|
|
// due to how precedence works, unaries will always dissapear first
|
|
|
|
_set_error("Parser bug..");
|
|
|
|
}
|
|
|
|
|
|
op->arguments.push_back(expression[next_op-1].node); //expression goes as left
|
|
op->arguments.push_back(expression[next_op+1].node); //next expression goes as right
|
|
|
|
//replace all 3 nodes by this operator and make it an expression
|
|
expression[next_op-1].node=op;
|
|
expression.remove(next_op);
|
|
expression.remove(next_op);
|
|
}
|
|
|
|
}
|
|
|
|
return expression[0].node;
|
|
|
|
}
|
|
|
|
|
|
GDParser::Node* GDParser::_reduce_expression(Node *p_node,bool p_to_const) {
|
|
|
|
switch(p_node->type) {
|
|
|
|
case Node::TYPE_BUILT_IN_FUNCTION: {
|
|
//many may probably be optimizable
|
|
return p_node;
|
|
} break;
|
|
case Node::TYPE_ARRAY: {
|
|
|
|
ArrayNode *an = static_cast<ArrayNode*>(p_node);
|
|
bool all_constants=true;
|
|
|
|
for(int i=0;i<an->elements.size();i++) {
|
|
|
|
an->elements[i]=_reduce_expression(an->elements[i],p_to_const);
|
|
if (an->elements[i]->type!=Node::TYPE_CONSTANT)
|
|
all_constants=false;
|
|
}
|
|
|
|
if (all_constants && p_to_const) {
|
|
//reduce constant array expression
|
|
|
|
ConstantNode *cn = alloc_node<ConstantNode>();
|
|
Array arr(!p_to_const);
|
|
arr.resize(an->elements.size());
|
|
for(int i=0;i<an->elements.size();i++) {
|
|
ConstantNode *acn = static_cast<ConstantNode*>(an->elements[i]);
|
|
arr[i]=acn->value;
|
|
|
|
}
|
|
cn->value=arr;
|
|
return cn;
|
|
}
|
|
|
|
return an;
|
|
|
|
} break;
|
|
case Node::TYPE_DICTIONARY: {
|
|
|
|
DictionaryNode *dn = static_cast<DictionaryNode*>(p_node);
|
|
bool all_constants=true;
|
|
|
|
for(int i=0;i<dn->elements.size();i++) {
|
|
|
|
dn->elements[i].key=_reduce_expression(dn->elements[i].key,p_to_const);
|
|
if (dn->elements[i].key->type!=Node::TYPE_CONSTANT)
|
|
all_constants=false;
|
|
dn->elements[i].value=_reduce_expression(dn->elements[i].value,p_to_const);
|
|
if (dn->elements[i].value->type!=Node::TYPE_CONSTANT)
|
|
all_constants=false;
|
|
|
|
}
|
|
|
|
if (all_constants && p_to_const) {
|
|
//reduce constant array expression
|
|
|
|
ConstantNode *cn = alloc_node<ConstantNode>();
|
|
Dictionary dict(!p_to_const);
|
|
for(int i=0;i<dn->elements.size();i++) {
|
|
ConstantNode *key_c = static_cast<ConstantNode*>(dn->elements[i].key);
|
|
ConstantNode *value_c = static_cast<ConstantNode*>(dn->elements[i].value);
|
|
|
|
dict[key_c->value]=value_c->value;
|
|
|
|
}
|
|
cn->value=dict;
|
|
return cn;
|
|
}
|
|
|
|
return dn;
|
|
|
|
|
|
} break;
|
|
case Node::TYPE_OPERATOR: {
|
|
|
|
OperatorNode *op=static_cast<OperatorNode*>(p_node);
|
|
|
|
bool all_constants=true;
|
|
int last_not_constant=-1;
|
|
|
|
for(int i=0;i<op->arguments.size();i++) {
|
|
|
|
op->arguments[i]=_reduce_expression(op->arguments[i],p_to_const);
|
|
if (op->arguments[i]->type!=Node::TYPE_CONSTANT) {
|
|
all_constants=false;
|
|
last_not_constant=i;
|
|
}
|
|
}
|
|
|
|
if (op->op==OperatorNode::OP_EXTENDS) {
|
|
//nothing much
|
|
return op;
|
|
|
|
} if (op->op==OperatorNode::OP_PARENT_CALL) {
|
|
//nothing much
|
|
return op;
|
|
|
|
} else if (op->op==OperatorNode::OP_CALL) {
|
|
//can reduce base type constructors
|
|
if ((op->arguments[0]->type==Node::TYPE_TYPE || (op->arguments[0]->type==Node::TYPE_BUILT_IN_FUNCTION && GDFunctions::is_deterministic( static_cast<BuiltInFunctionNode*>(op->arguments[0])->function))) && last_not_constant==0) {
|
|
|
|
//native type constructor or intrinsic function
|
|
const Variant **vptr=NULL;
|
|
Vector<Variant*> ptrs;
|
|
if (op->arguments.size()>1) {
|
|
|
|
ptrs.resize(op->arguments.size()-1);
|
|
for(int i=0;i<ptrs.size();i++) {
|
|
|
|
|
|
ConstantNode *cn = static_cast<ConstantNode*>(op->arguments[i+1]);
|
|
ptrs[i]=&cn->value;
|
|
}
|
|
|
|
vptr=(const Variant**)&ptrs[0];
|
|
|
|
|
|
}
|
|
|
|
Variant::CallError ce;
|
|
Variant v;
|
|
|
|
if (op->arguments[0]->type==Node::TYPE_TYPE) {
|
|
TypeNode *tn = static_cast<TypeNode*>(op->arguments[0]);
|
|
v = Variant::construct(tn->vtype,vptr,ptrs.size(),ce);
|
|
|
|
} else {
|
|
GDFunctions::Function func = static_cast<BuiltInFunctionNode*>(op->arguments[0])->function;
|
|
GDFunctions::call(func,vptr,ptrs.size(),v,ce);
|
|
}
|
|
|
|
|
|
if (ce.error!=Variant::CallError::CALL_OK) {
|
|
|
|
String errwhere;
|
|
if (op->arguments[0]->type==Node::TYPE_TYPE) {
|
|
TypeNode *tn = static_cast<TypeNode*>(op->arguments[0]);
|
|
errwhere="'"+Variant::get_type_name(tn->vtype)+"'' constructor";
|
|
|
|
} else {
|
|
GDFunctions::Function func = static_cast<BuiltInFunctionNode*>(op->arguments[0])->function;
|
|
errwhere=String("'")+GDFunctions::get_func_name(func)+"'' intrinsic function";
|
|
|
|
}
|
|
|
|
switch(ce.error) {
|
|
|
|
case Variant::CallError::CALL_ERROR_INVALID_ARGUMENT: {
|
|
|
|
_set_error("Invalid argument (#"+itos(ce.argument+1)+") for "+errwhere+".");
|
|
|
|
} break;
|
|
case Variant::CallError::CALL_ERROR_TOO_MANY_ARGUMENTS: {
|
|
|
|
_set_error("Too many arguments for "+errwhere+".");
|
|
} break;
|
|
case Variant::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS: {
|
|
|
|
_set_error("Too few arguments for "+errwhere+".");
|
|
} break;
|
|
default: {
|
|
_set_error("Invalid arguments for "+errwhere+".");
|
|
|
|
} break;
|
|
}
|
|
|
|
return p_node;
|
|
}
|
|
|
|
ConstantNode *cn = alloc_node<ConstantNode>();
|
|
cn->value=v;
|
|
return cn;
|
|
|
|
} else if (op->arguments[0]->type==Node::TYPE_BUILT_IN_FUNCTION && last_not_constant==0) {
|
|
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
return op; //don't reduce yet
|
|
} else if (op->op==OperatorNode::OP_INDEX) {
|
|
//can reduce indices into constant arrays or dictionaries
|
|
|
|
if (all_constants) {
|
|
|
|
ConstantNode *ca = static_cast<ConstantNode*>(op->arguments[0]);
|
|
ConstantNode *cb = static_cast<ConstantNode*>(op->arguments[1]);
|
|
|
|
|
|
|
|
bool valid;
|
|
|
|
Variant v = ca->value.get(cb->value,&valid);
|
|
if (!valid) {
|
|
_set_error("invalid index in constant expression");
|
|
return op;
|
|
}
|
|
|
|
ConstantNode *cn = alloc_node<ConstantNode>();
|
|
cn->value=v;
|
|
return cn;
|
|
|
|
} else if (op->arguments[0]->type==Node::TYPE_CONSTANT && op->arguments[1]->type==Node::TYPE_IDENTIFIER) {
|
|
|
|
ConstantNode *ca = static_cast<ConstantNode*>(op->arguments[0]);
|
|
IdentifierNode *ib = static_cast<IdentifierNode*>(op->arguments[1]);
|
|
|
|
bool valid;
|
|
Variant v = ca->value.get_named(ib->name,&valid);
|
|
if (!valid) {
|
|
_set_error("invalid index '"+String(ib->name)+"' in constant expression");
|
|
return op;
|
|
}
|
|
|
|
ConstantNode *cn = alloc_node<ConstantNode>();
|
|
cn->value=v;
|
|
return cn;
|
|
|
|
}
|
|
|
|
return op;
|
|
}
|
|
|
|
//validate assignment (don't assign to cosntant expression
|
|
switch(op->op) {
|
|
|
|
case OperatorNode::OP_ASSIGN:
|
|
case OperatorNode::OP_ASSIGN_ADD:
|
|
case OperatorNode::OP_ASSIGN_SUB:
|
|
case OperatorNode::OP_ASSIGN_MUL:
|
|
case OperatorNode::OP_ASSIGN_DIV:
|
|
case OperatorNode::OP_ASSIGN_MOD:
|
|
case OperatorNode::OP_ASSIGN_SHIFT_LEFT:
|
|
case OperatorNode::OP_ASSIGN_SHIFT_RIGHT:
|
|
case OperatorNode::OP_ASSIGN_BIT_AND:
|
|
case OperatorNode::OP_ASSIGN_BIT_OR:
|
|
case OperatorNode::OP_ASSIGN_BIT_XOR: {
|
|
|
|
if (op->arguments[0]->type==Node::TYPE_CONSTANT) {
|
|
_set_error("Can't assign to constant");
|
|
return op;
|
|
}
|
|
|
|
} break;
|
|
default: { break; }
|
|
}
|
|
//now se if all are constants
|
|
if (!all_constants)
|
|
return op; //nothing to reduce from here on
|
|
#define _REDUCE_UNARY(m_vop)\
|
|
bool valid=false;\
|
|
Variant res;\
|
|
Variant::evaluate(m_vop,static_cast<ConstantNode*>(op->arguments[0])->value,Variant(),res,valid);\
|
|
if (!valid) {\
|
|
_set_error("Invalid operand for unary operator");\
|
|
return p_node;\
|
|
}\
|
|
ConstantNode *cn = alloc_node<ConstantNode>();\
|
|
cn->value=res;\
|
|
return cn;
|
|
|
|
#define _REDUCE_BINARY(m_vop)\
|
|
bool valid=false;\
|
|
Variant res;\
|
|
Variant::evaluate(m_vop,static_cast<ConstantNode*>(op->arguments[0])->value,static_cast<ConstantNode*>(op->arguments[1])->value,res,valid);\
|
|
if (!valid) {\
|
|
_set_error("Invalid operands for operator");\
|
|
return p_node;\
|
|
}\
|
|
ConstantNode *cn = alloc_node<ConstantNode>();\
|
|
cn->value=res;\
|
|
return cn;
|
|
|
|
switch(op->op) {
|
|
|
|
//unary operators
|
|
case OperatorNode::OP_NEG: { _REDUCE_UNARY(Variant::OP_NEGATE); } break;
|
|
case OperatorNode::OP_NOT: { _REDUCE_UNARY(Variant::OP_NOT); } break;
|
|
case OperatorNode::OP_BIT_INVERT: { _REDUCE_UNARY(Variant::OP_BIT_NEGATE); } break;
|
|
//binary operators (in precedence order)
|
|
case OperatorNode::OP_IN: { _REDUCE_BINARY(Variant::OP_IN); } break;
|
|
case OperatorNode::OP_EQUAL: { _REDUCE_BINARY(Variant::OP_EQUAL); } break;
|
|
case OperatorNode::OP_NOT_EQUAL: { _REDUCE_BINARY(Variant::OP_NOT_EQUAL); } break;
|
|
case OperatorNode::OP_LESS: { _REDUCE_BINARY(Variant::OP_LESS); } break;
|
|
case OperatorNode::OP_LESS_EQUAL: { _REDUCE_BINARY(Variant::OP_LESS_EQUAL); } break;
|
|
case OperatorNode::OP_GREATER: { _REDUCE_BINARY(Variant::OP_GREATER); } break;
|
|
case OperatorNode::OP_GREATER_EQUAL: { _REDUCE_BINARY(Variant::OP_GREATER_EQUAL); } break;
|
|
case OperatorNode::OP_AND: { _REDUCE_BINARY(Variant::OP_AND); } break;
|
|
case OperatorNode::OP_OR: { _REDUCE_BINARY(Variant::OP_OR); } break;
|
|
case OperatorNode::OP_ADD: { _REDUCE_BINARY(Variant::OP_ADD); } break;
|
|
case OperatorNode::OP_SUB: { _REDUCE_BINARY(Variant::OP_SUBSTRACT); } break;
|
|
case OperatorNode::OP_MUL: { _REDUCE_BINARY(Variant::OP_MULTIPLY); } break;
|
|
case OperatorNode::OP_DIV: { _REDUCE_BINARY(Variant::OP_DIVIDE); } break;
|
|
case OperatorNode::OP_MOD: { _REDUCE_BINARY(Variant::OP_MODULE); } break;
|
|
case OperatorNode::OP_SHIFT_LEFT: { _REDUCE_BINARY(Variant::OP_SHIFT_LEFT); } break;
|
|
case OperatorNode::OP_SHIFT_RIGHT: { _REDUCE_BINARY(Variant::OP_SHIFT_RIGHT); } break;
|
|
case OperatorNode::OP_BIT_AND: { _REDUCE_BINARY(Variant::OP_BIT_AND); } break;
|
|
case OperatorNode::OP_BIT_OR: { _REDUCE_BINARY(Variant::OP_BIT_OR); } break;
|
|
case OperatorNode::OP_BIT_XOR: { _REDUCE_BINARY(Variant::OP_BIT_XOR); } break;
|
|
default: { ERR_FAIL_V(op); }
|
|
}
|
|
|
|
ERR_FAIL_V(op);
|
|
} break;
|
|
default: {
|
|
return p_node;
|
|
} break;
|
|
|
|
}
|
|
}
|
|
|
|
GDParser::Node* GDParser::_parse_and_reduce_expression(Node *p_parent,bool p_static,bool p_reduce_const,bool p_allow_assign) {
|
|
|
|
Node* expr=_parse_expression(p_parent,p_static,p_allow_assign);
|
|
if (!expr || error_set)
|
|
return NULL;
|
|
expr = _reduce_expression(expr,p_reduce_const);
|
|
if (!expr || error_set)
|
|
return NULL;
|
|
return expr;
|
|
}
|
|
|
|
void GDParser::_parse_block(BlockNode *p_block,bool p_static) {
|
|
|
|
int indent_level = tab_level.back()->get();
|
|
|
|
|
|
#ifdef DEBUG_ENABLED
|
|
|
|
NewLineNode *nl = alloc_node<NewLineNode>();
|
|
|
|
nl->line=tokenizer.get_token_line();
|
|
p_block->statements.push_back(nl);
|
|
#endif
|
|
|
|
while(true) {
|
|
|
|
GDTokenizer::Token token = tokenizer.get_token();
|
|
if (error_set)
|
|
return;
|
|
|
|
if (indent_level>tab_level.back()->get()) {
|
|
p_block->end_line=tokenizer.get_token_line();
|
|
return; //go back a level
|
|
}
|
|
|
|
switch(token) {
|
|
|
|
|
|
case GDTokenizer::TK_EOF:
|
|
p_block->end_line=tokenizer.get_token_line();
|
|
case GDTokenizer::TK_ERROR: {
|
|
return; //go back
|
|
|
|
//end of file!
|
|
|
|
} break;
|
|
case GDTokenizer::TK_NEWLINE: {
|
|
|
|
NewLineNode *nl = alloc_node<NewLineNode>();
|
|
nl->line=tokenizer.get_token_line();
|
|
p_block->statements.push_back(nl);
|
|
|
|
if (!_parse_newline()) {
|
|
if (!error_set) {
|
|
p_block->end_line=tokenizer.get_token_line();
|
|
}
|
|
return;
|
|
}
|
|
} break;
|
|
case GDTokenizer::TK_CF_PASS: {
|
|
if (tokenizer.get_token(1)!=GDTokenizer::TK_SEMICOLON && tokenizer.get_token(1)!=GDTokenizer::TK_NEWLINE ) {
|
|
|
|
_set_error("Expected ';' or <NewLine>.");
|
|
return;
|
|
}
|
|
tokenizer.advance();
|
|
} break;
|
|
case GDTokenizer::TK_PR_VAR: {
|
|
//variale declaration and (eventual) initialization
|
|
|
|
tokenizer.advance();
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_IDENTIFIER) {
|
|
|
|
_set_error("Expected identifier for local variable name.");
|
|
return;
|
|
}
|
|
StringName n = tokenizer.get_token_identifier();
|
|
tokenizer.advance();
|
|
|
|
p_block->variables.push_back(n); //line?
|
|
p_block->variable_lines.push_back(tokenizer.get_token_line());
|
|
|
|
|
|
//must know when the local variable is declared
|
|
LocalVarNode *lv = alloc_node<LocalVarNode>();
|
|
lv->name=n;
|
|
p_block->statements.push_back(lv);
|
|
|
|
Node *assigned=NULL;
|
|
|
|
if (tokenizer.get_token()==GDTokenizer::TK_OP_ASSIGN) {
|
|
|
|
tokenizer.advance();
|
|
Node *subexpr=NULL;
|
|
|
|
subexpr = _parse_and_reduce_expression(p_block,p_static);
|
|
if (!subexpr)
|
|
return;
|
|
|
|
lv->assign=subexpr;
|
|
assigned=subexpr;
|
|
} else {
|
|
|
|
ConstantNode *c = alloc_node<ConstantNode>();
|
|
c->value=Variant();
|
|
assigned = c;
|
|
|
|
}
|
|
IdentifierNode *id = alloc_node<IdentifierNode>();
|
|
id->name=n;
|
|
|
|
|
|
OperatorNode *op = alloc_node<OperatorNode>();
|
|
op->op=OperatorNode::OP_ASSIGN;
|
|
op->arguments.push_back(id);
|
|
op->arguments.push_back(assigned);
|
|
p_block->statements.push_back(op);
|
|
|
|
_end_statement();
|
|
|
|
|
|
} break;
|
|
case GDTokenizer::TK_CF_IF: {
|
|
|
|
tokenizer.advance();
|
|
Node *condition = _parse_and_reduce_expression(p_block,p_static);
|
|
if (!condition)
|
|
return;
|
|
|
|
ControlFlowNode *cf_if = alloc_node<ControlFlowNode>();
|
|
|
|
cf_if->cf_type=ControlFlowNode::CF_IF;
|
|
cf_if->arguments.push_back(condition);
|
|
|
|
cf_if->body = alloc_node<BlockNode>();
|
|
p_block->sub_blocks.push_back(cf_if->body);
|
|
|
|
if (!_enter_indent_block(cf_if->body)) {
|
|
p_block->end_line=tokenizer.get_token_line();
|
|
return;
|
|
}
|
|
|
|
_parse_block(cf_if->body,p_static);
|
|
if (error_set)
|
|
return;
|
|
p_block->statements.push_back(cf_if);
|
|
|
|
while(true) {
|
|
|
|
while(tokenizer.get_token()==GDTokenizer::TK_NEWLINE) {
|
|
tokenizer.advance();
|
|
}
|
|
|
|
if (tab_level.back()->get() < indent_level) { //not at current indent level
|
|
p_block->end_line=tokenizer.get_token_line();
|
|
return;
|
|
}
|
|
|
|
if (tokenizer.get_token()==GDTokenizer::TK_CF_ELIF) {
|
|
|
|
if (tab_level.back()->get() > indent_level) {
|
|
|
|
_set_error("Invalid indent");
|
|
return;
|
|
}
|
|
|
|
tokenizer.advance();
|
|
|
|
cf_if->body_else=alloc_node<BlockNode>();
|
|
p_block->sub_blocks.push_back(cf_if->body_else);
|
|
|
|
ControlFlowNode *cf_else = alloc_node<ControlFlowNode>();
|
|
cf_else->cf_type=ControlFlowNode::CF_IF;
|
|
|
|
//condition
|
|
Node *condition = _parse_and_reduce_expression(p_block,p_static);
|
|
if (!condition)
|
|
return;
|
|
cf_else->arguments.push_back(condition);
|
|
cf_else->cf_type=ControlFlowNode::CF_IF;
|
|
|
|
cf_if->body_else->statements.push_back(cf_else);
|
|
cf_if=cf_else;
|
|
cf_if->body=alloc_node<BlockNode>();
|
|
p_block->sub_blocks.push_back(cf_if->body);
|
|
|
|
|
|
if (!_enter_indent_block(cf_if->body)) {
|
|
p_block->end_line=tokenizer.get_token_line();
|
|
return;
|
|
}
|
|
|
|
_parse_block(cf_else->body,p_static);
|
|
if (error_set)
|
|
return;
|
|
|
|
|
|
} else if (tokenizer.get_token()==GDTokenizer::TK_CF_ELSE) {
|
|
|
|
if (tab_level.back()->get() > indent_level) {
|
|
|
|
_set_error("Invalid indent");
|
|
return;
|
|
}
|
|
|
|
|
|
tokenizer.advance();
|
|
cf_if->body_else=alloc_node<BlockNode>();
|
|
p_block->sub_blocks.push_back(cf_if->body_else);
|
|
|
|
if (!_enter_indent_block(cf_if->body_else)) {
|
|
p_block->end_line=tokenizer.get_token_line();
|
|
return;
|
|
}
|
|
_parse_block(cf_if->body_else,p_static);
|
|
if (error_set)
|
|
return;
|
|
|
|
|
|
break; //after else, exit
|
|
|
|
} else
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
} break;
|
|
case GDTokenizer::TK_CF_WHILE: {
|
|
|
|
tokenizer.advance();
|
|
Node *condition = _parse_and_reduce_expression(p_block,p_static);
|
|
if (!condition)
|
|
return;
|
|
|
|
ControlFlowNode *cf_while = alloc_node<ControlFlowNode>();
|
|
|
|
cf_while->cf_type=ControlFlowNode::CF_WHILE;
|
|
cf_while->arguments.push_back(condition);
|
|
|
|
cf_while->body = alloc_node<BlockNode>();
|
|
p_block->sub_blocks.push_back(cf_while->body);
|
|
|
|
if (!_enter_indent_block(cf_while->body)) {
|
|
p_block->end_line=tokenizer.get_token_line();
|
|
return;
|
|
}
|
|
|
|
_parse_block(cf_while->body,p_static);
|
|
if (error_set)
|
|
return;
|
|
p_block->statements.push_back(cf_while);
|
|
} break;
|
|
case GDTokenizer::TK_CF_FOR: {
|
|
|
|
tokenizer.advance();
|
|
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_IDENTIFIER) {
|
|
|
|
_set_error("identifier expected after 'for'");
|
|
}
|
|
|
|
IdentifierNode *id = alloc_node<IdentifierNode>();
|
|
id->name=tokenizer.get_token_identifier();
|
|
|
|
tokenizer.advance();
|
|
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_OP_IN) {
|
|
_set_error("'in' expected after identifier");
|
|
return;
|
|
}
|
|
|
|
tokenizer.advance();
|
|
|
|
Node *container = _parse_and_reduce_expression(p_block,p_static);
|
|
if (!container)
|
|
return;
|
|
|
|
ControlFlowNode *cf_for = alloc_node<ControlFlowNode>();
|
|
|
|
cf_for->cf_type=ControlFlowNode::CF_FOR;
|
|
cf_for->arguments.push_back(id);
|
|
cf_for->arguments.push_back(container);
|
|
|
|
cf_for->body = alloc_node<BlockNode>();
|
|
p_block->sub_blocks.push_back(cf_for->body);
|
|
|
|
if (!_enter_indent_block(cf_for->body)) {
|
|
p_block->end_line=tokenizer.get_token_line();
|
|
return;
|
|
}
|
|
|
|
_parse_block(cf_for->body,p_static);
|
|
if (error_set)
|
|
return;
|
|
p_block->statements.push_back(cf_for);
|
|
} break;
|
|
case GDTokenizer::TK_CF_CONTINUE: {
|
|
|
|
tokenizer.advance();
|
|
ControlFlowNode *cf_continue = alloc_node<ControlFlowNode>();
|
|
cf_continue->cf_type=ControlFlowNode::CF_CONTINUE;
|
|
p_block->statements.push_back(cf_continue);
|
|
if (!_end_statement()) {
|
|
_set_error("Expected end of statement (continue)");
|
|
return;
|
|
}
|
|
} break;
|
|
case GDTokenizer::TK_CF_BREAK: {
|
|
|
|
tokenizer.advance();
|
|
ControlFlowNode *cf_break = alloc_node<ControlFlowNode>();
|
|
cf_break->cf_type=ControlFlowNode::CF_BREAK;
|
|
p_block->statements.push_back(cf_break);
|
|
if (!_end_statement()) {
|
|
_set_error("Expected end of statement (break)");
|
|
return;
|
|
}
|
|
} break;
|
|
case GDTokenizer::TK_CF_RETURN: {
|
|
|
|
tokenizer.advance();
|
|
ControlFlowNode *cf_return = alloc_node<ControlFlowNode>();
|
|
cf_return->cf_type=ControlFlowNode::CF_RETURN;
|
|
|
|
|
|
|
|
if (tokenizer.get_token()==GDTokenizer::TK_SEMICOLON || tokenizer.get_token()==GDTokenizer::TK_NEWLINE || tokenizer.get_token()==GDTokenizer::TK_EOF) {
|
|
//expect end of statement
|
|
p_block->statements.push_back(cf_return);
|
|
if (!_end_statement()) {
|
|
return;
|
|
}
|
|
} else {
|
|
//expect expression
|
|
Node *retexpr = _parse_and_reduce_expression(p_block,p_static);
|
|
if (!retexpr)
|
|
return;
|
|
cf_return->arguments.push_back(retexpr);
|
|
p_block->statements.push_back(cf_return);
|
|
if (!_end_statement()) {
|
|
_set_error("Expected end of statement after return expression.");
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
} break;
|
|
case GDTokenizer::TK_PR_ASSERT: {
|
|
|
|
tokenizer.advance();
|
|
Node *condition = _parse_and_reduce_expression(p_block,p_static);
|
|
if (!condition)
|
|
return;
|
|
AssertNode *an = alloc_node<AssertNode>();
|
|
an->condition=condition;
|
|
p_block->statements.push_back(an);
|
|
|
|
if (!_end_statement()) {
|
|
_set_error("Expected end of statement after assert.");
|
|
return;
|
|
}
|
|
} break;
|
|
default: {
|
|
|
|
Node *expression = _parse_and_reduce_expression(p_block,p_static,false,true);
|
|
if (!expression)
|
|
return;
|
|
p_block->statements.push_back(expression);
|
|
if (!_end_statement()) {
|
|
_set_error("Expected end of statement after expression.");
|
|
return;
|
|
}
|
|
|
|
} break;
|
|
/*
|
|
case GDTokenizer::TK_CF_LOCAL: {
|
|
|
|
if (tokenizer.get_token(1)!=GDTokenizer::TK_SEMICOLON && tokenizer.get_token(1)!=GDTokenizer::TK_NEWLINE ) {
|
|
|
|
_set_error("Expected ';' or <NewLine>.");
|
|
}
|
|
tokenizer.advance();
|
|
} break;
|
|
*/
|
|
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
bool GDParser::_parse_newline() {
|
|
|
|
if (tokenizer.get_token(1)!=GDTokenizer::TK_EOF && tokenizer.get_token(1)!=GDTokenizer::TK_NEWLINE) {
|
|
|
|
int indent = tokenizer.get_token_line_indent();
|
|
int current_indent = tab_level.back()->get();
|
|
|
|
if (indent>current_indent) {
|
|
_set_error("Unexpected indent.");
|
|
return false;
|
|
}
|
|
|
|
if (indent<current_indent) {
|
|
|
|
while(indent<current_indent) {
|
|
|
|
//exit block
|
|
if (tab_level.size()==1) {
|
|
_set_error("Invalid indent. BUG?");
|
|
return false;
|
|
}
|
|
|
|
tab_level.pop_back();
|
|
|
|
if (tab_level.back()->get()<indent) {
|
|
|
|
_set_error("Unindent does not match any outer indentation level.");
|
|
return false;
|
|
}
|
|
current_indent = tab_level.back()->get();
|
|
}
|
|
|
|
tokenizer.advance();
|
|
return false;
|
|
}
|
|
}
|
|
|
|
tokenizer.advance();
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
void GDParser::_parse_extends(ClassNode *p_class) {
|
|
|
|
|
|
if (p_class->extends_used) {
|
|
|
|
_set_error("'extends' already used for this class.");
|
|
return;
|
|
}
|
|
|
|
if (!p_class->constant_expressions.empty() || !p_class->subclasses.empty() || !p_class->functions.empty() || !p_class->variables.empty()) {
|
|
|
|
_set_error("'extends' must be used before anything else.");
|
|
return;
|
|
}
|
|
|
|
p_class->extends_used=true;
|
|
|
|
//see if inheritance happens from a file
|
|
tokenizer.advance();
|
|
|
|
if (tokenizer.get_token()==GDTokenizer::TK_CONSTANT) {
|
|
|
|
Variant constant = tokenizer.get_token_constant();
|
|
if (constant.get_type()!=Variant::STRING) {
|
|
|
|
_set_error("'extends' constant must be a string.");
|
|
return;
|
|
}
|
|
|
|
p_class->extends_file=constant;
|
|
tokenizer.advance();
|
|
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_PERIOD) {
|
|
return;
|
|
} else
|
|
tokenizer.advance();
|
|
|
|
}
|
|
|
|
while(true) {
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_IDENTIFIER) {
|
|
|
|
_set_error("Invalid 'extends' syntax, expected string constant (path) and/or identifier (parent class).");
|
|
return;
|
|
}
|
|
|
|
StringName identifier=tokenizer.get_token_identifier();
|
|
p_class->extends_class.push_back(identifier);
|
|
|
|
tokenizer.advance(1);
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_PERIOD)
|
|
return;
|
|
}
|
|
|
|
}
|
|
|
|
void GDParser::_parse_class(ClassNode *p_class) {
|
|
|
|
int indent_level = tab_level.back()->get();
|
|
|
|
while(true) {
|
|
|
|
GDTokenizer::Token token = tokenizer.get_token();
|
|
if (error_set)
|
|
return;
|
|
|
|
if (indent_level>tab_level.back()->get()) {
|
|
p_class->end_line=tokenizer.get_token_line();
|
|
return; //go back a level
|
|
}
|
|
|
|
switch(token) {
|
|
|
|
case GDTokenizer::TK_EOF:
|
|
p_class->end_line=tokenizer.get_token_line();
|
|
case GDTokenizer::TK_ERROR: {
|
|
return; //go back
|
|
//end of file!
|
|
} break;
|
|
case GDTokenizer::TK_NEWLINE: {
|
|
if (!_parse_newline()) {
|
|
if (!error_set) {
|
|
p_class->end_line=tokenizer.get_token_line();
|
|
}
|
|
return;
|
|
}
|
|
} break;
|
|
case GDTokenizer::TK_PR_EXTENDS: {
|
|
|
|
_parse_extends(p_class);
|
|
if (error_set)
|
|
return;
|
|
_end_statement();
|
|
|
|
|
|
} break;
|
|
case GDTokenizer::TK_PR_TOOL: {
|
|
|
|
if (p_class->tool) {
|
|
|
|
_set_error("tool used more than once");
|
|
return;
|
|
}
|
|
|
|
p_class->tool=true;
|
|
tokenizer.advance();
|
|
|
|
} break;
|
|
case GDTokenizer::TK_PR_CLASS: {
|
|
//class inside class :D
|
|
|
|
StringName name;
|
|
StringName extends;
|
|
|
|
if (tokenizer.get_token(1)!=GDTokenizer::TK_IDENTIFIER) {
|
|
|
|
_set_error("'class' syntax: 'class <Name>:' or 'class <Name> extends <BaseClass>:'");
|
|
return;
|
|
}
|
|
name = tokenizer.get_token_identifier(1);
|
|
tokenizer.advance(2);
|
|
|
|
ClassNode *newclass = alloc_node<ClassNode>();
|
|
newclass->initializer = alloc_node<BlockNode>();
|
|
newclass->name=name;
|
|
|
|
p_class->subclasses.push_back(newclass);
|
|
|
|
|
|
if (tokenizer.get_token()==GDTokenizer::TK_PR_EXTENDS) {
|
|
|
|
_parse_extends(newclass);
|
|
if (error_set)
|
|
return;
|
|
}
|
|
|
|
if (!_enter_indent_block()) {
|
|
|
|
_set_error("Indented block expected.");
|
|
return;
|
|
}
|
|
_parse_class(newclass);
|
|
|
|
} break;
|
|
/* this is for functions....
|
|
case GDTokenizer::TK_CF_PASS: {
|
|
|
|
tokenizer.advance(1);
|
|
} break;
|
|
*/
|
|
case GDTokenizer::TK_PR_STATIC: {
|
|
tokenizer.advance();
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_PR_FUNCTION) {
|
|
|
|
_set_error("Expected 'func'.");
|
|
return;
|
|
}
|
|
|
|
}; //fallthrough to function
|
|
case GDTokenizer::TK_PR_FUNCTION: {
|
|
|
|
bool _static=false;
|
|
|
|
if (tokenizer.get_token(-1)==GDTokenizer::TK_PR_STATIC) {
|
|
|
|
_static=true;
|
|
}
|
|
|
|
|
|
if (tokenizer.get_token(1)!=GDTokenizer::TK_IDENTIFIER) {
|
|
|
|
_set_error("Expected identifier after 'func' (syntax: 'func <identifier>([arguments]):' ).");
|
|
return;
|
|
}
|
|
|
|
StringName name = tokenizer.get_token_identifier(1);
|
|
|
|
for(int i=0;i<p_class->functions.size();i++) {
|
|
if (p_class->functions[i]->name==name) {
|
|
_set_error("Function '"+String(name)+"' already exists in this class (at line: "+itos(p_class->functions[i]->line)+").");
|
|
}
|
|
}
|
|
for(int i=0;i<p_class->static_functions.size();i++) {
|
|
if (p_class->static_functions[i]->name==name) {
|
|
_set_error("Function '"+String(name)+"' already exists in this class (at line: "+itos(p_class->static_functions[i]->line)+").");
|
|
}
|
|
}
|
|
tokenizer.advance(2);
|
|
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_PARENTHESIS_OPEN) {
|
|
|
|
_set_error("Expected '(' after identifier (syntax: 'func <identifier>([arguments]):' ).");
|
|
return;
|
|
}
|
|
|
|
tokenizer.advance();
|
|
|
|
Vector<StringName> arguments;
|
|
Vector<Node*> default_values;
|
|
|
|
int fnline = tokenizer.get_token_line();
|
|
|
|
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_PARENTHESIS_CLOSE) {
|
|
//has arguments
|
|
bool defaulting=false;
|
|
while(true) {
|
|
|
|
if (tokenizer.get_token()==GDTokenizer::TK_PR_VAR) {
|
|
|
|
tokenizer.advance(); //var before the identifier is allowed
|
|
}
|
|
|
|
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_IDENTIFIER) {
|
|
|
|
_set_error("Expected identifier for argument.");
|
|
return;
|
|
}
|
|
|
|
StringName argname=tokenizer.get_token_identifier();
|
|
arguments.push_back(argname);
|
|
|
|
tokenizer.advance();
|
|
|
|
if (defaulting && tokenizer.get_token()!=GDTokenizer::TK_OP_ASSIGN) {
|
|
|
|
_set_error("Default parameter expected.");
|
|
return;
|
|
}
|
|
|
|
//tokenizer.advance();
|
|
|
|
|
|
if (tokenizer.get_token()==GDTokenizer::TK_OP_ASSIGN) {
|
|
defaulting=true;
|
|
tokenizer.advance(1);
|
|
Node *defval=NULL;
|
|
|
|
defval=_parse_and_reduce_expression(p_class,_static);
|
|
if (!defval || error_set)
|
|
return;
|
|
|
|
OperatorNode *on = alloc_node<OperatorNode>();
|
|
on->op=OperatorNode::OP_ASSIGN;
|
|
|
|
IdentifierNode *in = alloc_node<IdentifierNode>();
|
|
in->name=argname;
|
|
|
|
on->arguments.push_back(in);
|
|
on->arguments.push_back(defval);
|
|
/* no ..
|
|
if (defval->type!=Node::TYPE_CONSTANT) {
|
|
|
|
_set_error("default argument must be constant");
|
|
}
|
|
*/
|
|
default_values.push_back(on);
|
|
}
|
|
|
|
if (tokenizer.get_token()==GDTokenizer::TK_COMMA) {
|
|
tokenizer.advance();
|
|
continue;
|
|
} else if (tokenizer.get_token()!=GDTokenizer::TK_PARENTHESIS_CLOSE) {
|
|
|
|
_set_error("Expected ',' or ')'.");
|
|
return;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
|
|
}
|
|
|
|
tokenizer.advance();
|
|
|
|
BlockNode *block = alloc_node<BlockNode>();
|
|
|
|
if (name=="_init") {
|
|
|
|
if (p_class->extends_used) {
|
|
|
|
OperatorNode *cparent = alloc_node<OperatorNode>();
|
|
cparent->op=OperatorNode::OP_PARENT_CALL;
|
|
block->statements.push_back(cparent);
|
|
|
|
IdentifierNode *id = alloc_node<IdentifierNode>();
|
|
id->name="_init";
|
|
cparent->arguments.push_back(id);
|
|
|
|
if (tokenizer.get_token()==GDTokenizer::TK_PERIOD) {
|
|
tokenizer.advance();
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_PARENTHESIS_OPEN) {
|
|
_set_error("expected '(' for parent constructor arguments.");
|
|
}
|
|
tokenizer.advance();
|
|
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_PARENTHESIS_CLOSE) {
|
|
//has arguments
|
|
while(true) {
|
|
|
|
Node *arg = _parse_and_reduce_expression(p_class,_static);
|
|
cparent->arguments.push_back(arg);
|
|
|
|
if (tokenizer.get_token()==GDTokenizer::TK_COMMA) {
|
|
tokenizer.advance();
|
|
continue;
|
|
} else if (tokenizer.get_token()!=GDTokenizer::TK_PARENTHESIS_CLOSE) {
|
|
|
|
_set_error("Expected ',' or ')'.");
|
|
return;
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
}
|
|
|
|
tokenizer.advance();
|
|
}
|
|
} else {
|
|
|
|
|
|
if (tokenizer.get_token()==GDTokenizer::TK_PERIOD) {
|
|
|
|
_set_error("Parent constructor call found for a class without inheritance.");
|
|
return;
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
if (!_enter_indent_block(block)) {
|
|
|
|
_set_error("Indented block expected.");
|
|
return;
|
|
}
|
|
|
|
FunctionNode *function = alloc_node<FunctionNode>();
|
|
function->name=name;
|
|
function->arguments=arguments;
|
|
function->default_values=default_values;
|
|
function->_static=_static;
|
|
function->line=fnline;
|
|
|
|
|
|
if (_static)
|
|
p_class->static_functions.push_back(function);
|
|
else
|
|
p_class->functions.push_back(function);
|
|
|
|
|
|
_parse_block(block,_static);
|
|
function->body=block;
|
|
//arguments
|
|
} break;
|
|
case GDTokenizer::TK_PR_EXPORT: {
|
|
|
|
tokenizer.advance();
|
|
|
|
if (tokenizer.get_token()==GDTokenizer::TK_PARENTHESIS_OPEN) {
|
|
|
|
tokenizer.advance();
|
|
if (tokenizer.get_token()==GDTokenizer::TK_BUILT_IN_TYPE) {
|
|
|
|
Variant::Type type = tokenizer.get_token_type();
|
|
if (type==Variant::NIL) {
|
|
_set_error("Can't export null type.");
|
|
return;
|
|
}
|
|
current_export.type=type;
|
|
tokenizer.advance();
|
|
if (tokenizer.get_token()==GDTokenizer::TK_COMMA) {
|
|
// hint expected next!
|
|
tokenizer.advance();
|
|
switch(current_export.type) {
|
|
|
|
|
|
case Variant::INT: {
|
|
|
|
if (tokenizer.get_token()==GDTokenizer::TK_CONSTANT && tokenizer.get_token_constant().get_type()==Variant::STRING) {
|
|
//enumeration
|
|
current_export.hint=PROPERTY_HINT_ENUM;
|
|
bool first=true;
|
|
while(true) {
|
|
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_CONSTANT || tokenizer.get_token_constant().get_type()!=Variant::STRING) {
|
|
|
|
current_export=PropertyInfo();
|
|
_set_error("Expected a string constant in enumeration hint.");
|
|
}
|
|
|
|
String c = tokenizer.get_token_constant();
|
|
if (!first)
|
|
current_export.hint_string+=",";
|
|
else
|
|
first=false;
|
|
|
|
current_export.hint_string+=c.xml_escape();
|
|
|
|
tokenizer.advance();
|
|
if (tokenizer.get_token()==GDTokenizer::TK_PARENTHESIS_CLOSE)
|
|
break;
|
|
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_COMMA) {
|
|
current_export=PropertyInfo();
|
|
_set_error("Expected ')' or ',' in enumeration hint.");
|
|
}
|
|
|
|
tokenizer.advance();
|
|
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
};
|
|
case Variant::REAL: {
|
|
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_CONSTANT || !tokenizer.get_token_constant().is_num()) {
|
|
|
|
current_export=PropertyInfo();
|
|
_set_error("Expected a range in numeric hint.");
|
|
|
|
}
|
|
//enumeration
|
|
current_export.hint=PROPERTY_HINT_RANGE;
|
|
|
|
current_export.hint_string=tokenizer.get_token_constant().operator String();
|
|
tokenizer.advance();
|
|
|
|
if (tokenizer.get_token()==GDTokenizer::TK_PARENTHESIS_CLOSE) {
|
|
current_export.hint_string="0,"+current_export.hint_string;
|
|
break;
|
|
}
|
|
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_COMMA) {
|
|
|
|
current_export=PropertyInfo();
|
|
_set_error("Expected ',' or ')' in numeric range hint.");
|
|
}
|
|
|
|
tokenizer.advance();
|
|
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_CONSTANT || !tokenizer.get_token_constant().is_num()) {
|
|
|
|
current_export=PropertyInfo();
|
|
_set_error("Expected a number as upper bound in numeric range hint.");
|
|
}
|
|
|
|
current_export.hint_string+=","+tokenizer.get_token_constant().operator String();
|
|
tokenizer.advance();
|
|
|
|
if (tokenizer.get_token()==GDTokenizer::TK_PARENTHESIS_CLOSE)
|
|
break;
|
|
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_COMMA) {
|
|
|
|
current_export=PropertyInfo();
|
|
_set_error("Expected ',' or ')' in numeric range hint.");
|
|
}
|
|
|
|
tokenizer.advance();
|
|
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_CONSTANT || !tokenizer.get_token_constant().is_num()) {
|
|
|
|
current_export=PropertyInfo();
|
|
_set_error("Expected a number as step in numeric range hint.");
|
|
}
|
|
|
|
current_export.hint_string+=","+tokenizer.get_token_constant().operator String();
|
|
tokenizer.advance();
|
|
|
|
} break;
|
|
case Variant::STRING: {
|
|
|
|
if (tokenizer.get_token()==GDTokenizer::TK_CONSTANT && tokenizer.get_token_constant().get_type()==Variant::STRING) {
|
|
//enumeration
|
|
current_export.hint=PROPERTY_HINT_ENUM;
|
|
bool first=true;
|
|
while(true) {
|
|
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_CONSTANT || tokenizer.get_token_constant().get_type()!=Variant::STRING) {
|
|
|
|
current_export=PropertyInfo();
|
|
_set_error("Expected a string constant in enumeration hint.");
|
|
}
|
|
|
|
String c = tokenizer.get_token_constant();
|
|
if (!first)
|
|
current_export.hint_string+=",";
|
|
else
|
|
first=false;
|
|
|
|
current_export.hint_string+=c.xml_escape();
|
|
tokenizer.advance();
|
|
if (tokenizer.get_token()==GDTokenizer::TK_PARENTHESIS_CLOSE)
|
|
break;
|
|
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_COMMA) {
|
|
current_export=PropertyInfo();
|
|
_set_error("Expected ')' or ',' in enumeration hint.");
|
|
return;
|
|
}
|
|
tokenizer.advance();
|
|
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
if (tokenizer.get_token()==GDTokenizer::TK_IDENTIFIER && tokenizer.get_token_identifier()=="DIR") {
|
|
|
|
current_export.hint=PROPERTY_HINT_DIR;
|
|
tokenizer.advance();
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_PARENTHESIS_CLOSE) {
|
|
_set_error("Expected ')' in hint.");
|
|
return;
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (tokenizer.get_token()==GDTokenizer::TK_IDENTIFIER && tokenizer.get_token_identifier()=="FILE") {
|
|
|
|
current_export.hint=PROPERTY_HINT_FILE;
|
|
tokenizer.advance();
|
|
|
|
if (tokenizer.get_token()==GDTokenizer::TK_COMMA) {
|
|
|
|
tokenizer.advance();
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_CONSTANT || tokenizer.get_token_constant().get_type()!=Variant::STRING) {
|
|
|
|
_set_error("Expected string constant with filter");
|
|
return;
|
|
}
|
|
current_export.hint_string=tokenizer.get_token_constant();
|
|
tokenizer.advance();
|
|
|
|
}
|
|
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_PARENTHESIS_CLOSE) {
|
|
_set_error("Expected ')' in hint.");
|
|
return;
|
|
}
|
|
break;
|
|
}
|
|
} break;
|
|
case Variant::COLOR: {
|
|
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_IDENTIFIER ) {
|
|
|
|
current_export=PropertyInfo();
|
|
_set_error("Color type hint expects RGB or RGBA as hints");
|
|
return;
|
|
}
|
|
|
|
String identifier = tokenizer.get_token_identifier();
|
|
if (identifier=="RGB") {
|
|
current_export.hint=PROPERTY_HINT_COLOR_NO_ALPHA;
|
|
} else if (identifier=="RGBA") {
|
|
//none
|
|
} else {
|
|
current_export=PropertyInfo();
|
|
_set_error("Color type hint expects RGB or RGBA as hints");
|
|
return;
|
|
}
|
|
tokenizer.advance();
|
|
|
|
} break;
|
|
default: {
|
|
|
|
current_export=PropertyInfo();
|
|
_set_error("Type '"+Variant::get_type_name(type)+"' can't take hints.");
|
|
return;
|
|
} break;
|
|
}
|
|
|
|
}
|
|
|
|
} else if (tokenizer.get_token()==GDTokenizer::TK_IDENTIFIER) {
|
|
|
|
String identifier = tokenizer.get_token_identifier();
|
|
if (!ObjectTypeDB::is_type(identifier,"Resource")) {
|
|
|
|
current_export=PropertyInfo();
|
|
_set_error("Export hint not a type or resource.");
|
|
}
|
|
|
|
current_export.type=Variant::OBJECT;
|
|
current_export.hint=PROPERTY_HINT_RESOURCE_TYPE;
|
|
current_export.hint_string=identifier;
|
|
|
|
tokenizer.advance();
|
|
}
|
|
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_PARENTHESIS_CLOSE) {
|
|
|
|
current_export=PropertyInfo();
|
|
_set_error("Expected ')' or ',' after export hint.");
|
|
return;
|
|
|
|
}
|
|
|
|
tokenizer.advance();
|
|
|
|
}
|
|
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_PR_VAR) {
|
|
|
|
current_export=PropertyInfo();
|
|
_set_error("Expected 'var'.");
|
|
return;
|
|
}
|
|
|
|
}; //fallthrough to var
|
|
case GDTokenizer::TK_PR_VAR: {
|
|
//variale declaration and (eventual) initialization
|
|
|
|
ClassNode::Member member;
|
|
bool autoexport = tokenizer.get_token(-1)==GDTokenizer::TK_PR_EXPORT;
|
|
if (current_export.type!=Variant::NIL) {
|
|
member._export=current_export;
|
|
current_export=PropertyInfo();
|
|
}
|
|
|
|
tokenizer.advance();
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_IDENTIFIER) {
|
|
|
|
_set_error("Expected identifier for member variable name.");
|
|
return;
|
|
}
|
|
|
|
member.identifier=tokenizer.get_token_identifier();
|
|
member._export.name=member.identifier;
|
|
tokenizer.advance();
|
|
|
|
p_class->variables.push_back(member);
|
|
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_OP_ASSIGN) {
|
|
|
|
if (autoexport) {
|
|
|
|
_set_error("Type-less export needs a constant expression assigned to infer type.");
|
|
return;
|
|
}
|
|
break;
|
|
}
|
|
#ifdef DEBUG_ENABLED
|
|
int line = tokenizer.get_token_line();
|
|
#endif
|
|
tokenizer.advance();
|
|
|
|
Node *subexpr=NULL;
|
|
|
|
subexpr = _parse_and_reduce_expression(p_class,false);
|
|
if (!subexpr)
|
|
return;
|
|
|
|
if (autoexport) {
|
|
if (subexpr->type==Node::TYPE_ARRAY) {
|
|
|
|
p_class->variables[p_class->variables.size()-1]._export.type=Variant::ARRAY;
|
|
|
|
} else if (subexpr->type==Node::TYPE_DICTIONARY) {
|
|
|
|
p_class->variables[p_class->variables.size()-1]._export.type=Variant::DICTIONARY;
|
|
|
|
} else {
|
|
|
|
if (subexpr->type!=Node::TYPE_CONSTANT) {
|
|
|
|
_set_error("Type-less export needs a constant expression assigned to infer type.");
|
|
return;
|
|
}
|
|
|
|
ConstantNode *cn = static_cast<ConstantNode*>(subexpr);
|
|
if (cn->value.get_type()==Variant::NIL) {
|
|
|
|
_set_error("Can't accept a null constant expression for infering export type.");
|
|
return;
|
|
}
|
|
p_class->variables[p_class->variables.size()-1]._export.type=cn->value.get_type();
|
|
}
|
|
}
|
|
#ifdef TOOLS_ENABLED
|
|
if (subexpr->type==Node::TYPE_CONSTANT && p_class->variables[p_class->variables.size()-1]._export.type!=Variant::NIL) {
|
|
|
|
ConstantNode *cn = static_cast<ConstantNode*>(subexpr);
|
|
if (cn->value.get_type()!=Variant::NIL) {
|
|
p_class->variables[p_class->variables.size()-1].default_value=cn->value;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
|
|
|
|
IdentifierNode *id = alloc_node<IdentifierNode>();
|
|
id->name=member.identifier;
|
|
|
|
OperatorNode *op = alloc_node<OperatorNode>();
|
|
op->op=OperatorNode::OP_ASSIGN;
|
|
op->arguments.push_back(id);
|
|
op->arguments.push_back(subexpr);
|
|
|
|
#ifdef DEBUG_ENABLED
|
|
NewLineNode *nl = alloc_node<NewLineNode>();
|
|
nl->line=line;
|
|
p_class->initializer->statements.push_back(nl);
|
|
#endif
|
|
p_class->initializer->statements.push_back(op);
|
|
|
|
_end_statement();
|
|
|
|
} break;
|
|
case GDTokenizer::TK_PR_CONST: {
|
|
//variale declaration and (eventual) initialization
|
|
|
|
ClassNode::Constant constant;
|
|
|
|
tokenizer.advance();
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_IDENTIFIER) {
|
|
|
|
_set_error("Expected name (identifier) for constant.");
|
|
return;
|
|
}
|
|
|
|
constant.identifier=tokenizer.get_token_identifier();
|
|
tokenizer.advance();
|
|
|
|
if (tokenizer.get_token()!=GDTokenizer::TK_OP_ASSIGN) {
|
|
_set_error("Constant expects assignment.");
|
|
return;
|
|
}
|
|
|
|
tokenizer.advance();
|
|
|
|
Node *subexpr=NULL;
|
|
|
|
subexpr = _parse_and_reduce_expression(p_class,true,true);
|
|
if (!subexpr)
|
|
return;
|
|
|
|
if (subexpr->type!=Node::TYPE_CONSTANT) {
|
|
_set_error("Expected constant expression");
|
|
}
|
|
constant.expression=subexpr;
|
|
|
|
p_class->constant_expressions.push_back(constant);
|
|
|
|
_end_statement();
|
|
|
|
|
|
} break;
|
|
|
|
|
|
default: {
|
|
|
|
_set_error(String()+"Unexpected token: "+tokenizer.get_token_name(tokenizer.get_token())+":"+tokenizer.get_token_identifier());
|
|
return;
|
|
|
|
} break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
void GDParser::_set_error(const String& p_error, int p_line, int p_column) {
|
|
|
|
|
|
if (error_set)
|
|
return; //allow no further errors
|
|
|
|
error=p_error;
|
|
error_line=p_line<0?tokenizer.get_token_line():p_line;
|
|
error_column=p_column<0?tokenizer.get_token_column():p_column;
|
|
error_set=true;
|
|
}
|
|
|
|
String GDParser::get_error() const {
|
|
|
|
return error;
|
|
}
|
|
|
|
int GDParser::get_error_line() const {
|
|
|
|
return error_line;
|
|
}
|
|
int GDParser::get_error_column() const {
|
|
|
|
return error_column;
|
|
}
|
|
|
|
|
|
Error GDParser::parse(const String& p_code,const String& p_base_path) {
|
|
|
|
base_path=p_base_path;
|
|
|
|
tokenizer.set_code(p_code);
|
|
|
|
clear();
|
|
|
|
//assume class
|
|
ClassNode *main_class = alloc_node<ClassNode>();
|
|
main_class->initializer = alloc_node<BlockNode>();
|
|
|
|
_parse_class(main_class);
|
|
|
|
if (tokenizer.get_token()==GDTokenizer::TK_ERROR) {
|
|
error_set=false;
|
|
_set_error("Parse Error: "+tokenizer.get_token_error());
|
|
}
|
|
|
|
if (error_set) {
|
|
|
|
return ERR_PARSE_ERROR;
|
|
}
|
|
return OK;
|
|
}
|
|
|
|
const GDParser::Node *GDParser::get_parse_tree() const {
|
|
|
|
return head;
|
|
}
|
|
|
|
void GDParser::clear() {
|
|
|
|
while(list) {
|
|
|
|
Node *l=list;
|
|
list=list->next;
|
|
memdelete(l);
|
|
}
|
|
|
|
head=NULL;
|
|
list=NULL;
|
|
|
|
error_set=false;
|
|
tab_level.clear();
|
|
tab_level.push_back(0);
|
|
error_line=0;
|
|
error_column=0;
|
|
current_export.type=Variant::NIL;
|
|
error="";
|
|
|
|
}
|
|
|
|
GDParser::GDParser() {
|
|
|
|
head=NULL;
|
|
list=NULL;
|
|
clear();
|
|
|
|
}
|
|
|
|
GDParser::~GDParser() {
|
|
|
|
clear();
|
|
}
|