public override FilterExpression Rewrite(FilterCallExpression lx, TextMatchingTransformer rewriteArm)
{
if (lx.Operands.Length != 2)
{
return(base.Rewrite(lx, rewriteArm));
}
var tx0 = lx.Operands[0] as FilterTextExpression;
var tx1 = lx.Operands[1] as FilterTextExpression;
if (tx1?.Matching == FilterTextMatching.RegularExpression ||
tx1?.Matching == FilterTextMatching.RegularExpressionInsensitive)
{
var ci = RegexOptions.None;
if (UseCaseInsensitiveRegexMatching(tx0, tx1.Matching))
{
ci = RegexOptions.IgnoreCase;
}
var refind = new Regex(tx1.Text, ci | RegexOptions.ExplicitCapture | RegexOptions.Compiled | RegexOptions.Multiline);
return(new FilterCallExpression(Operators.ToRuntimePattern(lx.OperatorName),
rewriteArm.Transform(lx.Operands[0]),
new FilterConstantExpression(refind)));
}
return(new FilterCallExpression(
UseCaseInsensitiveTextMatching(tx0, tx1) ? Operators.ToRuntimeIgnoreCase(lx.OperatorName) : lx.OperatorName,
rewriteArm.Transform(lx.Operands[0]),
rewriteArm.Transform(lx.Operands[1])));
}
public override FilterExpression Rewrite(FilterCallExpression lx, TextMatchingTransformer rewriteArm)
{
if (lx.Operands.Length != 2)
{
return(base.Rewrite(lx, rewriteArm));
}
// Just a rename to match the runtime function.
return(new FilterCallExpression(
Operators.RuntimeOpIndexOfIgnoreCase,
rewriteArm.Transform(lx.Operands[0]),
rewriteArm.Transform(lx.Operands[1])));
}
public override FilterExpression Rewrite(FilterCallExpression lx, TextMatchingTransformer rewriteArm)
{
if (lx.Operands.Length != 2)
{
return(base.Rewrite(lx, rewriteArm));
}
var tx0 = lx.Operands[0] as FilterTextExpression;
var tx1 = lx.Operands[1] as FilterTextExpression;
if (tx0?.Matching == FilterTextMatching.RegularExpression ||
tx0?.Matching == FilterTextMatching.RegularExpressionInsensitive ||
tx1?.Matching == FilterTextMatching.RegularExpression ||
tx1?.Matching == FilterTextMatching.RegularExpressionInsensitive)
{
if (tx1?.Matching != FilterTextMatching.RegularExpression &&
tx1?.Matching != FilterTextMatching.RegularExpressionInsensitive)
{
// Make sure the regex is always second.
return(Rewrite(new FilterCallExpression(lx.OperatorName, lx.Operands[1], lx.Operands[0]), rewriteArm));
}
var ci = RegexOptions.None;
if (UseCaseInsensitiveRegexMatching(tx0, tx1.Matching))
{
ci |= RegexOptions.IgnoreCase;
}
var rewhole = new Regex("^" + tx1.Text + "$", ci | RegexOptions.ExplicitCapture);
return(new FilterCallExpression(Operators.ToRuntimePattern(lx.OperatorName),
rewriteArm.Transform(lx.Operands[0]),
new FilterConstantExpression(rewhole)));
}
return(new FilterCallExpression(
UseCaseInsensitiveTextMatching(tx0, tx1) ? Operators.ToRuntimeIgnoreCase(lx.OperatorName) : lx.OperatorName,
rewriteArm.Transform(lx.Operands[0]),
rewriteArm.Transform(lx.Operands[1])));
}
public static FilterExpression Rewrite(FilterExpression expression)
{
var transformer = new TextMatchingTransformer();
return(transformer.Transform(expression));
}
public virtual FilterExpression Rewrite(FilterCallExpression lx,
TextMatchingTransformer rewriteArm)
{
return(new FilterCallExpression(lx.OperatorName, lx.Operands.Select(rewriteArm.Transform).ToArray()));
}