public DekiScriptExpression Visit(DekiScriptTernary expr, DekiScriptExpressionEvaluationState state)
{
DekiScriptExpression test = expr.Test.VisitWith(this, state);
DekiScriptExpression result;
// check which branch should be executed
if (test is DekiScriptLiteral)
{
if (((DekiScriptLiteral)test).IsNilFalseZero)
{
result = expr.Right.VisitWith(this, state);
}
else
{
result = expr.Left.VisitWith(this, state);
}
}
else
{
var left = expr.Left.VisitWith(this, state);
var right = expr.Right.VisitWith(this, state);
result = expr.IsIfElse ? DekiScriptExpression.IfElseStatement(expr.Location, test, left, right) : DekiScriptExpression.TernaryOp(expr.Location, test, left, right);
}
return(result);
}
public DekiScriptExpression Visit(DekiScriptTernary expr, DekiScriptOptimizerState state)
{
var mode = state.Mode;
var env = state.Env;
DekiScriptExpression test = expr.Test.VisitWith(this, state);
DekiScriptExpression result;
// check if a local variable scope needs to be created
if (expr.IsIfElse)
{
env = env.NewLocalScope();
}
// check which branch should be executed
if (test is DekiScriptLiteral)
{
if (((DekiScriptLiteral)test).IsNilFalseZero)
{
result = expr.Right.VisitWith(this, new DekiScriptOptimizerState(mode, env));
}
else
{
result = expr.Left.VisitWith(this, new DekiScriptOptimizerState(mode, env));
}
}
else
{
result = new DekiScriptTernary(expr.Line, expr.Column, test, expr.Left.VisitWith(this, new DekiScriptOptimizerState(mode, env)), expr.Right.VisitWith(this, new DekiScriptOptimizerState(mode, env)), expr.IsIfElse);
}
return(result);
}
public DekiScriptOutputBuffer.Range Visit(DekiScriptTernary expr, DekiScriptExpressionEvaluationState state)
{
DekiScriptLiteral test = state.Pop(expr.Test.VisitWith(this, state));
DekiScriptLiteral result;
// check which branch should be executed
if (!test.IsNilFalseZero)
{
return(expr.Left.VisitWith(this, state));
}
else
{
return(expr.Right.VisitWith(this, state));
}
}
public DekiScriptLiteral Visit(DekiScriptTernary expr, DekiScriptEnv env)
{
DekiScriptLiteral test = expr.Test.VisitWith(this, env);
DekiScriptLiteral result;
// check if a local variable scope needs to be created
if (expr.IsIfElse)
{
env = env.NewLocalScope();
}
// check which branch should be executed
if (!test.IsNilFalseZero)
{
result = expr.Left.VisitWith(this, env);
}
else
{
result = expr.Right.VisitWith(this, env);
}
return(result);
}