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//
// PrimitiveExpression.cs
//
// Author:
// Mike Krüger <mkrueger@novell.com>
//
// Copyright (c) 2009 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
namespace ICSharpCode.NRefactory.CSharp
{
/// <summary>
/// Represents a literal value.
/// </summary>
public class PrimitiveExpression : Expression
{
public static readonly object AnyValue = new object();
TextLocation startLocation;
public override TextLocation StartLocation {
get {
return startLocation;
}
}
string literalValue;
TextLocation? endLocation;
public override TextLocation EndLocation {
get {
if (!endLocation.HasValue) {
endLocation = value is string ? AdvanceLocation (StartLocation, literalValue) :
new TextLocation (StartLocation.Line, StartLocation.Column + literalValue.Length);
}
return endLocation.Value;
}
}
object value;
public object Value {
get { return this.value; }
set {
ThrowIfFrozen();
this.value = value;
}
}
public string LiteralValue {
get { return literalValue; }
set {
if (value == null)
throw new ArgumentNullException();
ThrowIfFrozen();
literalValue = value;
}
}
public PrimitiveExpression (object value)
{
this.Value = value;
this.literalValue = "";
}
public PrimitiveExpression (object value, string literalValue)
{
this.Value = value;
this.literalValue = literalValue ?? "";
}
public PrimitiveExpression (object value, TextLocation startLocation, string literalValue)
{
this.Value = value;
this.startLocation = startLocation;
this.literalValue = literalValue ?? "";
}
public override void AcceptVisitor (IAstVisitor visitor)
{
visitor.VisitPrimitiveExpression (this);
}
public override T AcceptVisitor<T> (IAstVisitor<T> visitor)
{
return visitor.VisitPrimitiveExpression (this);
}
public override S AcceptVisitor<T, S> (IAstVisitor<T, S> visitor, T data)
{
return visitor.VisitPrimitiveExpression (this, data);
}
unsafe static TextLocation AdvanceLocation(TextLocation startLocation, string str)
{
int line = startLocation.Line;
int col = startLocation.Column;
fixed (char* start = str) {
char* p = start;
char* endPtr = start + str.Length;
while (p < endPtr) {
var nl = NewLine.GetDelimiterLength(*p, () => {
char* nextp = p + 1;
if (nextp < endPtr)
return *nextp;
return '\0';
});
if (nl > 0) {
line++;
col = 1;
if (nl == 2)
p++;
} else {
col++;
}
p++;
}
}
return new TextLocation (line, col);
}
protected internal override bool DoMatch(AstNode other, PatternMatching.Match match)
{
PrimitiveExpression o = other as PrimitiveExpression;
return o != null && (this.Value == AnyValue || object.Equals(this.Value, o.Value));
}
}
}
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