private object IfElseStatementNode(IfElseStatementNode ie)
{
if ((bool)Evaluate(ie.i))
{
return(Evaluate(ie.truebody));
}
return(Evaluate(ie.falsebody));
}
private IfElseStatementNode Visit(IfElseStatementNode node)
{
var trueLabel = MakeLabel();
var falseLabel = MakeLabel();
var nextLabel = MakeLabel();
dynamic BoolProp = new ExpandoObject();
properties.Add(node.Condition, BoolProp);
BoolProp.trueLabel = trueLabel;
BoolProp.falseLabel = falseLabel;
node.Condition.Visit(this);
generatedCode.Add(trueLabel);
node.StatementNode1.Visit(this);
generatedCode.Add(MakeLabeledGoto(nextLabel));
generatedCode.Add(falseLabel);
node.StatementNode2.Visit(this);
generatedCode.Add(nextLabel);
return(node);
}
private IfElseStatementNode Visit(IfElseStatementNode node)
{
var condBB = func.AppendBasicBlock($"cond_{++count}");
var bodyBB = func.AppendBasicBlock($"body_{++count}");
var elseBB = func.AppendBasicBlock($"else_{++count}");
var contBB = func.AppendBasicBlock($"cont_{++count}");
builder.BuildBr(condBB);
builder.PositionAtEnd(condBB);
Visit(node.Condition);
builder.BuildCondBr(GetProperty(node.Condition).addr, bodyBB, elseBB);
builder.PositionAtEnd(bodyBB);
Visit(node.StatementNode1);
builder.BuildBr(contBB);
builder.PositionAtEnd(elseBB);
Visit(node.StatementNode2);
builder.BuildBr(contBB);
builder.PositionAtEnd(contBB);
return(node);
}
private IfElseStatementNode Visit(IfElseStatementNode node)
{
dynamic props = new ExpandoObject();
properties.Add(node, props);
var code = new List <CodeEntry>();
props.code = code;
var trueLabel = properties[node.Condition].trueLabel;
var falseLabel = properties[node.Condition].falseLabel;
var nextLabel = MakeLabel();
code.AddRange(properties[node.Condition].code);
code.Add(trueLabel);
code.AddRange(properties[node.StatementNode1].code);
code.Add(MakeLabeledGoto(nextLabel));
code.Add(falseLabel);
code.AddRange(properties[node.StatementNode2].code);
code.Add(nextLabel);
return(node);
}
