public static CodegenExpression Codegen(
ExprAndNodeImpl parent,
CodegenMethodScope codegenMethodScope,
ExprForgeCodegenSymbol exprSymbol,
CodegenClassScope codegenClassScope)
{
var methodNode = codegenMethodScope.MakeChild(typeof(bool?), typeof(ExprAndNodeEval), codegenClassScope);
var block = methodNode.Block
.DeclareVar<bool?>("result", ConstantTrue());
var count = -1;
foreach (ExprNode child in parent.ChildNodes) {
count++;
var childType = child.Forge.EvaluationType;
if (childType.CanNotBeNull()) {
block.IfCondition(
Not(child.Forge.EvaluateCodegen(typeof(bool?), methodNode, exprSymbol, codegenClassScope)))
.BlockReturn(ConstantFalse());
}
else {
var refname = "r" + count;
block.DeclareVar<bool?>(
refname,
child.Forge.EvaluateCodegen(typeof(bool?), methodNode, exprSymbol, codegenClassScope))
.IfCondition(EqualsNull(Ref(refname)))
.AssignRef("result", ConstantNull())
.IfElse()
.IfCondition(Not(ExprDotName(Ref(refname), "Value")))
.BlockReturn(ConstantFalse());
}
}
block.MethodReturn(Ref("result"));
return LocalMethod(methodNode);
}
public ExprAndNodeEval(
ExprAndNodeImpl parent,
ExprEvaluator[] evaluators)
{
this._parent = parent;
this._evaluators = evaluators;
}