public ExprRelationalOpNodeForgeEval(
ExprRelationalOpNodeForge forge,
ExprEvaluator left,
ExprEvaluator right)
{
this._forge = forge;
this._left = left;
this._right = right;
}
public static CodegenExpression Codegen(
ExprRelationalOpNodeForge forge,
CodegenMethodScope codegenMethodScope,
ExprForgeCodegenSymbol exprSymbol,
CodegenClassScope codegenClassScope)
{
var lhs = forge.ForgeRenderable.ChildNodes[0].Forge;
var rhs = forge.ForgeRenderable.ChildNodes[1].Forge;
var lhsType = lhs.EvaluationType;
if (lhsType == null) {
return ConstantNull();
}
var rhsType = rhs.EvaluationType;
if (rhsType == null) {
return ConstantNull();
}
var chsType = forge.CoercionType;
var methodNode = codegenMethodScope.MakeChild(
typeof(bool?),
typeof(ExprRelationalOpNodeForgeEval),
codegenClassScope);
CodegenExpression lhsRef = Ref("left");
CodegenExpression rhsRef = Ref("right");
var block = methodNode.Block;
block.DeclareVar(chsType, "left", lhs.EvaluateCodegen(chsType, methodNode, exprSymbol, codegenClassScope));
if (chsType.CanBeNull()) {
block.IfRefNullReturnNull("left");
if (chsType.IsNullable()) {
lhsRef = Unbox(lhsRef);
lhsType = chsType.GetUnboxedType();
}
}
block.DeclareVar(chsType, "right", rhs.EvaluateCodegen(chsType, methodNode, exprSymbol, codegenClassScope));
if (chsType.CanBeNull()) {
block.IfRefNullReturnNull("right");
if (chsType.IsNullable()) {
rhsRef = Unbox(rhsRef);
rhsType = chsType.GetUnboxedType();
}
}
block.MethodReturn(forge.Computer.Codegen(lhsRef, lhsType, rhsRef, rhsType));
return LocalMethod(methodNode);
}
