public override object VisitPrimitiveExpression(PrimitiveExpression primitiveExpression, object data)
{
return new CodePrimitiveExpression(primitiveExpression.Value);
}
public override sealed object VisitPrimitiveExpression(PrimitiveExpression primitiveExpression, object data)
{
this.BeginVisit(primitiveExpression);
object result = this.TrackedVisitPrimitiveExpression(primitiveExpression, data);
this.EndVisit(primitiveExpression);
return result;
}
public virtual object TrackedVisitPrimitiveExpression(PrimitiveExpression primitiveExpression, object data)
{
return base.VisitPrimitiveExpression(primitiveExpression, data);
}
public virtual object VisitPrimitiveExpression(PrimitiveExpression primitiveExpression, object data)
{
Debug.Assert((primitiveExpression != null));
return null;
}
public virtual object VisitPrimitiveExpression(PrimitiveExpression primitiveExpression, object data)
{
throw new global::System.NotImplementedException("PrimitiveExpression");
}
/// <summary>
/// Returns the existing expression plus the specified integer value.
/// The old <paramref name="expr"/> object is not modified, but might be a subobject on the new expression
/// (and thus its parent property is modified).
/// </summary>
public static Expression AddInteger(Expression expr, int value)
{
PrimitiveExpression pe = expr as PrimitiveExpression;
if (pe != null && pe.Value is int)
{
int newVal = (int)pe.Value + value;
return(new PrimitiveExpression(newVal, newVal.ToString(System.Globalization.NumberFormatInfo.InvariantInfo)));
}
BinaryOperatorExpression boe = expr as BinaryOperatorExpression;
if (boe != null && boe.Op == BinaryOperatorType.Add)
{
// clone boe:
boe = new BinaryOperatorExpression(boe.Left, boe.Op, boe.Right);
boe.Right = AddInteger(boe.Right, value);
if (boe.Right is PrimitiveExpression && ((PrimitiveExpression)boe.Right).Value is int)
{
int newVal = (int)((PrimitiveExpression)boe.Right).Value;
if (newVal == 0)
{
return(boe.Left);
}
else if (newVal < 0)
{
((PrimitiveExpression)boe.Right).Value = -newVal;
boe.Op = BinaryOperatorType.Subtract;
}
}
return(boe);
}
if (boe != null && boe.Op == BinaryOperatorType.Subtract)
{
pe = boe.Right as PrimitiveExpression;
if (pe != null && pe.Value is int)
{
int newVal = (int)pe.Value - value;
if (newVal == 0)
{
return(boe.Left);
}
// clone boe:
boe = new BinaryOperatorExpression(boe.Left, boe.Op, boe.Right);
if (newVal < 0)
{
newVal = -newVal;
boe.Op = BinaryOperatorType.Add;
}
boe.Right = new PrimitiveExpression(newVal, newVal.ToString(System.Globalization.NumberFormatInfo.InvariantInfo));
return(boe);
}
}
BinaryOperatorType opType = BinaryOperatorType.Add;
if (value < 0)
{
value = -value;
opType = BinaryOperatorType.Subtract;
}
return(new BinaryOperatorExpression(expr, opType, new PrimitiveExpression(value, value.ToString(System.Globalization.NumberFormatInfo.InvariantInfo))));
}
void SimpleNonInvocationExpression(out Expression pexpr)
{
Expression expr;
CollectionInitializerExpression cie;
TypeReference type = null;
string name = String.Empty;
Location startLocation = la.Location;
pexpr = null;
if (StartOf(34)) {
switch (la.kind) {
case 3: {
Get();
pexpr = new PrimitiveExpression(t.literalValue, t.val) { LiteralFormat = t.literalFormat };
break;
}
case 4: {
Get();
pexpr = new PrimitiveExpression(t.literalValue, t.val) { LiteralFormat = t.literalFormat };
break;
}
case 7: {
Get();
pexpr = new PrimitiveExpression(t.literalValue, t.val) { LiteralFormat = t.literalFormat };
break;
}
case 6: {
Get();
pexpr = new PrimitiveExpression(t.literalValue, t.val) { LiteralFormat = t.literalFormat };
break;
}
case 5: {
Get();
pexpr = new PrimitiveExpression(t.literalValue, t.val) { LiteralFormat = t.literalFormat };
break;
}
case 9: {
Get();
pexpr = new PrimitiveExpression(t.literalValue, t.val) { LiteralFormat = t.literalFormat };
break;
}
case 8: {
Get();
pexpr = new PrimitiveExpression(t.literalValue, t.val) { LiteralFormat = t.literalFormat };
break;
}
case 217: {
Get();
pexpr = new PrimitiveExpression(true, "true");
break;
}
case 122: {
Get();
pexpr = new PrimitiveExpression(false, "false");
break;
}
case 165: {
Get();
pexpr = new PrimitiveExpression(null, "null");
break;
}
case 37: {
Get();
Expr(out expr);
Expect(38);
pexpr = new ParenthesizedExpression(expr);
break;
}
case 2: case 58: case 62: case 64: case 65: case 66: case 67: case 70: case 87: case 98: case 104: case 107: case 116: case 121: case 126: case 133: case 139: case 143: case 146: case 147: case 170: case 176: case 178: case 184: case 203: case 212: case 213: case 223: case 224: case 230: {
Identifier();
pexpr = new IdentifierExpression(t.val);
pexpr.StartLocation = t.Location; pexpr.EndLocation = t.EndLocation;
if (la.kind == Tokens.OpenParenthesis && Peek(1).kind == Tokens.Of) {
Expect(37);
Expect(169);
TypeArgumentList(((IdentifierExpression)pexpr).TypeArguments);
Expect(38);
}
break;
}
case 68: case 71: case 82: case 99: case 100: case 109: case 141: case 151: case 168: case 196: case 201: case 202: case 208: case 221: case 222: case 225: {
string val = String.Empty;
if (StartOf(13)) {
PrimitiveTypeName(out val);
} else {
Get();
val = "System.Object";
}
pexpr = new TypeReferenceExpression(new TypeReference(val, true));
break;
}
case 153: {
Get();
pexpr = new ThisReferenceExpression();
break;
}
case 158: case 159: {
Expression retExpr = null;
if (la.kind == 158) {
Get();
retExpr = new BaseReferenceExpression() { StartLocation = t.Location, EndLocation = t.EndLocation };
} else {
Get();
retExpr = new ClassReferenceExpression() { StartLocation = t.Location, EndLocation = t.EndLocation };
}
Expect(26);
IdentifierOrKeyword(out name);
pexpr = new MemberReferenceExpression(retExpr, name) { StartLocation = startLocation, EndLocation = t.EndLocation };
break;
}
case 130: {
Get();
Expect(26);
Identifier();
type = new TypeReference(t.val ?? "");
type.IsGlobal = true;
pexpr = new TypeReferenceExpression(type);
break;
}
case 162: {
ObjectCreateExpression(out expr);
pexpr = expr;
break;
}
case 35: {
CollectionInitializer(out cie);
pexpr = cie;
break;
}
case 94: case 106: case 219: {
CastType castType = CastType.Cast;
if (la.kind == 106) {
Get();
} else if (la.kind == 94) {
Get();
castType = CastType.Conversion;
} else {
Get();
castType = CastType.TryCast;
}
Expect(37);
Expr(out expr);
Expect(22);
TypeName(out type);
Expect(38);
pexpr = new CastExpression(type, expr, castType);
break;
}
case 76: case 77: case 78: case 79: case 80: case 81: case 83: case 85: case 86: case 90: case 91: case 92: case 93: case 95: case 96: case 97: {
CastTarget(out type);
Expect(37);
Expr(out expr);
Expect(38);
pexpr = new CastExpression(type, expr, CastType.PrimitiveConversion);
break;
}
case 57: {
Get();
SimpleExpr(out expr);
pexpr = new AddressOfExpression(expr);
break;
}
case 129: {
Get();
Expect(37);
GetTypeTypeName(out type);
Expect(38);
pexpr = new TypeOfExpression(type);
break;
}
case 220: {
Get();
SimpleExpr(out expr);
Expect(144);
TypeName(out type);
pexpr = new TypeOfIsExpression(expr, type);
break;
}
case 135: {
ConditionalExpression(out pexpr);
break;
}
case 10: case 16: case 17: case 18: case 19: {
XmlLiteralExpression(out pexpr);
break;
}
}
} else if (StartOf(35)) {
if (la.kind == 26) {
Get();
if (la.kind == 10) {
Get();
IdentifierOrKeyword(out name);
Expect(11);
pexpr = new XmlMemberAccessExpression(null, XmlAxisType.Element, name, true) { StartLocation = startLocation, EndLocation = t.EndLocation };
} else if (StartOf(33)) {
IdentifierOrKeyword(out name);
pexpr = new MemberReferenceExpression(null, name) { StartLocation = startLocation, EndLocation = t.EndLocation };
} else SynErr(281);
} else if (la.kind == 29) {
Get();
IdentifierOrKeyword(out name);
pexpr = new BinaryOperatorExpression(null, BinaryOperatorType.DictionaryAccess, new PrimitiveExpression(name, name) { StartLocation = t.Location, EndLocation = t.EndLocation });
} else {
XmlAxisType axisType = XmlAxisType.Element; bool isXmlIdentifier = false;
if (la.kind == 27) {
Get();
axisType = XmlAxisType.Descendents;
} else {
Get();
axisType = XmlAxisType.Attribute;
}
if (la.kind == 10) {
Get();
isXmlIdentifier = true;
}
IdentifierOrKeyword(out name);
if (la.kind == 11) {
Get();
}
pexpr = new XmlMemberAccessExpression(null, axisType, name, isXmlIdentifier);
}
} else SynErr(282);
if (pexpr != null) {
pexpr.StartLocation = startLocation;
pexpr.EndLocation = t.EndLocation;
}
}
public void TestPrimitiveExpression()
{
object output = new PrimitiveExpression(5, "5").AcceptVisitor(new CodeDomVisitor(), null);
Assert.IsTrue(output is CodePrimitiveExpression);
Assert.AreEqual(((CodePrimitiveExpression)output).Value, 5);
}