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More efficient iteration syntax, and range() is converted behind the scenes to it.

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This commit is contained in:
Juan Linietsky
2017-01-11 20:09:45 -03:00
parent 41821ba11d
commit bfef8de1bc
2 changed files with 147 additions and 0 deletions
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58
modules/gdscript/gd_parser.cpp
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@@ -2004,6 +2004,64 @@ void GDParser::_parse_block(BlockNode *p_block,bool p_static) {
return;
}
if (container->type==Node::TYPE_OPERATOR) {
OperatorNode* op = static_cast<OperatorNode*>(container);
if (op->op==OperatorNode::OP_CALL && op->arguments[0]->type==Node::TYPE_BUILT_IN_FUNCTION && static_cast<BuiltInFunctionNode*>(op->arguments[0])->function==GDFunctions::GEN_RANGE) {
//iterating a range, so see if range() can be optimized without allocating memory, by replacing it by vectors (which can work as iterable too!)
Vector<Node*> args;
Vector<double> constants;
bool constant=true;
for(int i=1;i<op->arguments.size();i++) {
args.push_back(op->arguments[i]);
if (constant && op->arguments[i]->type==Node::TYPE_CONSTANT) {
ConstantNode *c = static_cast<ConstantNode*>(op->arguments[i]);
if (c->value.get_type()==Variant::REAL || c->value.get_type()==Variant::INT) {
constants.push_back(c->value);
} else {
constant=false;
}
}
}
if (args.size()>0 || args.size()<4) {
if (constant) {
ConstantNode *cn = alloc_node<ConstantNode>();
switch(args.size()) {
case 1: cn->value=constants[0]; break;
case 2: cn->value=Vector2(constants[0],constants[1]); break;
case 3: cn->value=Vector3(constants[0],constants[1],constants[2]); break;
}
container=cn;
} else {
OperatorNode *on = alloc_node<OperatorNode>();
on->op=OperatorNode::OP_CALL;
TypeNode *tn = alloc_node<TypeNode>();
on->arguments.push_back(tn);
switch(args.size()) {
case 1: tn->vtype=Variant::REAL; break;
case 2: tn->vtype=Variant::VECTOR2; break;
case 3: tn->vtype=Variant::VECTOR3; break;
}
for(int i=0;i<args.size();i++) {
on->arguments.push_back(args[i]);
}
container=on;
}
}
}
}
ControlFlowNode *cf_for = alloc_node<ControlFlowNode>();
cf_for->cf_type=ControlFlowNode::CF_FOR;