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- Fix issue #391: GDScript now reduce constant expressions to constant and forbids constant assignment after being defined.

This commit is contained in:
Guy Rabiller 2014-10-27 22:26:11 +01:00
parent 4e31faab4a
commit 1317d20740
1 changed files with 21 additions and 5 deletions
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24
modules/gdscript/gd_parser.cpp
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@ -372,10 +372,26 @@ GDParser::Node* GDParser::_parse_expression(Node *p_parent,bool p_static,bool p_
} else if (tokenizer->get_token()==GDTokenizer::TK_IDENTIFIER) {
//identifier (reference)
IdentifierNode *id = alloc_node<IdentifierNode>();
id->name=tokenizer->get_token_identifier();
const ClassNode* cln = static_cast<const ClassNode*>(get_parse_tree());
bool bfn = false;
StringName idn( tokenizer->get_token_identifier() );
for( int i=0; i<cln->constant_expressions.size(); ++i ) {
if( cln->constant_expressions[i].identifier == idn ) {
tokenizer->advance();
expr=id;
expr = cln->constant_expressions[i].expression;
bfn = true;
break;
}
}
if( !bfn ) {
IdentifierNode *id = alloc_node<IdentifierNode>();
id->name = idn;
tokenizer->advance();
expr = id;
}
} 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) {
@ -1179,7 +1195,7 @@ GDParser::Node* GDParser::_reduce_expression(Node *p_node,bool p_to_const) {
case OperatorNode::OP_ASSIGN_BIT_XOR: {
if (op->arguments[0]->type==Node::TYPE_CONSTANT) {
_set_error("Can't assign to constant");
_set_error("Can't assign to constant",tokenizer->get_token_line()-1);
return op;
}