public static void EmitJumpUnlessCondition(
CompilerTarget target, AstExpr cond, string targetLabel)
{
if (cond == null)
throw new ArgumentNullException("cond", Resources.AstLazyLogical__Condition_must_not_be_null);
if (target == null)
throw new ArgumentNullException("target", Resources.AstNode_Compiler_target_must_not_be_null);
if (String.IsNullOrEmpty(targetLabel))
throw new ArgumentException(
Resources.AstLazyLogical__targetLabel_must_neither_be_null_nor_empty, "targetLabel");
var logical = cond as AstLazyLogical;
if (logical != null)
{
var continueLabel = "Continue\\Lazy\\" + Guid.NewGuid().ToString("N");
logical.EmitCode(target, continueLabel, targetLabel); //inverted
target.EmitLabel(cond.Position, continueLabel);
}
else
{
cond.EmitValueCode(target);
target.EmitJumpIfFalse(cond.Position, targetLabel);
}
}
public static void EmitJumpCondition(
CompilerTarget target,
AstExpr cond,
string targetLabel,
string alternativeLabel,
bool isPositive)
{
if (cond == null)
throw new ArgumentNullException("cond", Resources.AstLazyLogical__Condition_must_not_be_null);
if (target == null)
throw new ArgumentNullException("target", Resources.AstNode_Compiler_target_must_not_be_null);
if (String.IsNullOrEmpty(targetLabel))
throw new ArgumentException(
Resources.AstLazyLogical__targetLabel_must_neither_be_null_nor_empty, "targetLabel");
if (String.IsNullOrEmpty(alternativeLabel))
throw new ArgumentException(
Resources.AstLazyLogical_alternativeLabel_may_neither_be_null_nor_empty, "alternativeLabel");
var logical = cond as AstLazyLogical;
if (!isPositive)
{
//Invert if needed
var tmpLabel = alternativeLabel;
alternativeLabel = targetLabel;
targetLabel = tmpLabel;
}
if (logical != null)
{
logical.EmitCode(target, targetLabel, alternativeLabel);
}
else
{
cond.EmitValueCode(target);
target.EmitJumpIfTrue(cond.Position, targetLabel);
target.EmitJump(cond.Position, alternativeLabel);
}
}