public AbstractType Visit(TypeidExpression x)
{
//TODO: Split up into more detailed typeinfo objects (e.g. for arrays, pointers, classes etc.)
return(TypeDeclarationResolver.ResolveSingle(new IdentifierDeclaration("TypeInfo")
{
InnerDeclaration = new IdentifierDeclaration("object")
}, ctxt));
}
public ISymbolValue Visit(TypeidExpression tid)
{
/*
* Depending on what's given as argument, it's needed to find out what kind of TypeInfo_ class to return
* AND to fill it with all required information.
*
* http://dlang.org/phobos/object.html#TypeInfo
*/
throw new NotImplementedException("TypeInfo creation not supported yet");
}
public ISymbolValue Visit(TypeidExpression tid)
{
/*
* Depending on what's given as argument, it's needed to find out what kind of TypeInfo_ class to return
* AND to fill it with all required information.
*
* http://dlang.org/phobos/object.html#TypeInfo
*/
throw new NotImplementedException("TypeInfo creation not supported yet");
}
public ISemantic E(TypeidExpression tid)
{
//TODO: Split up into more detailed typeinfo objects (e.g. for arrays, pointers, classes etc.)
if(!eval)
return TypeDeclarationResolver.ResolveSingle(new IdentifierDeclaration("TypeInfo") { InnerDeclaration = new IdentifierDeclaration("object") }, ctxt);
/*
* Depending on what's given as argument, it's needed to find out what kind of TypeInfo_ class to return
* AND to fill it with all required information.
*
* http://dlang.org/phobos/object.html#TypeInfo
*/
throw new NotImplementedException("TypeInfo creation not supported yet");
}
public ISemantic E(TypeidExpression tid)
{
//TODO: Split up into more detailed typeinfo objects (e.g. for arrays, pointers, classes etc.)
if (!eval)
{
return(TypeDeclarationResolver.ResolveSingle(new IdentifierDeclaration("TypeInfo")
{
InnerDeclaration = new IdentifierDeclaration("object")
}, ctxt));
}
/*
* Depending on what's given as argument, it's needed to find out what kind of TypeInfo_ class to return
* AND to fill it with all required information.
*
* http://dlang.org/phobos/object.html#TypeInfo
*/
throw new NotImplementedException("TypeInfo creation not supported yet");
}
public void Visit(TypeidExpression x)
{
}
public void Visit(TypeidExpression x)
{
}
IExpression PrimaryExpression(IBlockNode Scope=null)
{
bool isModuleScoped = laKind == Dot;
if (isModuleScoped)
{
Step();
if (IsEOF)
{
var dot = new TokenExpression(Dot) { Location = t.Location, EndLocation = t.EndLocation };
return new PostfixExpression_Access{ PostfixForeExpression = dot, AccessExpression = new TokenExpression(DTokens.Incomplete) };
}
}
// TemplateInstance
if (IsTemplateInstance)
{
var tix = TemplateInstance(Scope);
if (tix != null)
tix.ModuleScopedIdentifier = isModuleScoped;
return tix;
}
if (IsLambaExpression())
return LambaExpression(Scope);
CodeLocation startLoc;
switch (laKind)
{
// ArrayLiteral | AssocArrayLiteral
case OpenSquareBracket:
return ArrayLiteral(Scope);
case New:
return NewExpression(Scope);
case Typeof:
return new TypeDeclarationExpression(TypeOf());
case __traits:
return TraitsExpression();
// Dollar (== Array length expression)
case Dollar:
Step();
return new TokenExpression(t.Kind)
{
Location = t.Location,
EndLocation = t.EndLocation
};
case Identifier:
Step();
return new IdentifierExpression(t.Value)
{
Location = t.Location,
EndLocation = t.EndLocation,
ModuleScoped = isModuleScoped
};
// SpecialTokens (this,super,null,true,false,$) // $ has been handled before
case This:
case Super:
case Null:
case True:
case False:
Step();
return new TokenExpression(t.Kind)
{
Location = t.Location,
EndLocation = t.EndLocation
};
case OpenParenthesis:
if (IsFunctionLiteral())
goto case Function;
// ( Expression )
Step();
var ret = new SurroundingParenthesesExpression() {Location=t.Location };
ret.Expression = Expression();
Expect(CloseParenthesis);
ret.EndLocation = t.EndLocation;
return ret;
case Literal:
Step();
startLoc = t.Location;
// Concatenate multiple string literals here
if (t.LiteralFormat == LiteralFormat.StringLiteral || t.LiteralFormat == LiteralFormat.VerbatimStringLiteral)
{
var sb = new StringBuilder(t.RawCodeRepresentation ?? t.Value);
while (la.LiteralFormat == LiteralFormat.StringLiteral || la.LiteralFormat == LiteralFormat.VerbatimStringLiteral)
{
Step();
sb.Append(t.RawCodeRepresentation ?? t.Value);
}
return new IdentifierExpression(sb.ToString(), t.LiteralFormat, t.Subformat) { Location = startLoc, EndLocation = t.EndLocation };
}
//else if (t.LiteralFormat == LiteralFormat.CharLiteral)return new IdentifierExpression(t.LiteralValue) { LiteralFormat=t.LiteralFormat,Location = startLoc, EndLocation = t.EndLocation };
return new IdentifierExpression(t.LiteralValue, t.LiteralFormat, t.Subformat) { Location = startLoc, EndLocation = t.EndLocation };
// FunctionLiteral
case Delegate:
case Function:
case OpenCurlyBrace:
var fl = new FunctionLiteral() { Location=la.Location};
fl.AnonymousMethod.Location = la.Location;
if (laKind == Delegate || laKind == Function)
{
Step();
fl.LiteralToken = t.Kind;
}
// file.d:1248
/*
listdir (".", delegate bool (DirEntry * de)
{
auto s = std.string.format("%s : c %s, w %s, a %s", de.name,
toUTCString (de.creationTime),
toUTCString (de.lastWriteTime),
toUTCString (de.lastAccessTime));
return true;
}
);
*/
if (laKind != OpenCurlyBrace) // foo( 1, {bar();} ); -> is a legal delegate
{
if (!IsFunctionAttribute && Lexer.CurrentPeekToken.Kind == OpenParenthesis)
fl.AnonymousMethod.Type = BasicType();
else if (laKind != OpenParenthesis && laKind != OpenCurlyBrace)
fl.AnonymousMethod.Type = Type();
if (laKind == OpenParenthesis)
fl.AnonymousMethod.Parameters = Parameters(fl.AnonymousMethod);
FunctionAttributes(fl.AnonymousMethod);
}
if (!IsEOF)
{
FunctionBody(fl.AnonymousMethod);
fl.EndLocation = fl.AnonymousMethod.EndLocation;
}
else
fl.EndLocation = la.Location;
if (Scope != null)
Scope.Add(fl.AnonymousMethod);
return fl;
// AssertExpression
case Assert:
Step();
startLoc = t.Location;
Expect(OpenParenthesis);
var ce = new AssertExpression() { Location=startLoc};
var exprs = new List<IExpression>();
exprs.Add(AssignExpression());
if (laKind == (Comma))
{
Step();
exprs.Add(AssignExpression());
}
ce.AssignExpressions = exprs.ToArray();
Expect(CloseParenthesis);
ce.EndLocation = t.EndLocation;
return ce;
// MixinExpression
case Mixin:
Step();
var me = new MixinExpression() { Location=t.Location};
if (Expect(OpenParenthesis))
{
me.AssignExpression = AssignExpression();
Expect(CloseParenthesis);
}
me.EndLocation = t.EndLocation;
return me;
// ImportExpression
case Import:
Step();
var ie = new ImportExpression() { Location=t.Location};
Expect(OpenParenthesis);
ie.AssignExpression = AssignExpression();
Expect(CloseParenthesis);
ie.EndLocation = t.EndLocation;
return ie;
// TypeidExpression
case Typeid:
Step();
var tide = new TypeidExpression() { Location=t.Location};
Expect(OpenParenthesis);
if (IsAssignExpression())
tide.Expression = AssignExpression(Scope);
else
{
Lexer.PushLookAheadBackup();
AllowWeakTypeParsing = true;
tide.Type = Type();
AllowWeakTypeParsing = false;
if (tide.Type == null || laKind != CloseParenthesis)
{
Lexer.RestoreLookAheadBackup();
tide.Expression = AssignExpression();
}
else
Lexer.PopLookAheadBackup();
}
Expect (CloseParenthesis);
tide.EndLocation = t.EndLocation;
return tide;
// IsExpression
case Is:
Step();
var ise = new IsExpression() { Location = t.Location };
Expect(OpenParenthesis);
if ((ise.TestedType = Type()) == null)
SynErr(laKind, "In an IsExpression, either a type or an expression is required!");
if (ise.TestedType != null)
{
if (laKind == Identifier && (Lexer.CurrentPeekToken.Kind == CloseParenthesis || Lexer.CurrentPeekToken.Kind == Equal
|| Lexer.CurrentPeekToken.Kind == Colon))
{
Step();
Strings.Add(strVal);
ise.TypeAliasIdentifierHash = strVal.GetHashCode();
ise.TypeAliasIdLocation = t.Location;
}
else if (IsEOF)
ise.TypeAliasIdentifierHash = DTokens.IncompleteIdHash;
}
if (laKind == Colon || laKind == Equal)
{
Step();
ise.EqualityTest = t.Kind == Equal;
}
else if (laKind == CloseParenthesis)
{
Step();
ise.EndLocation = t.EndLocation;
return ise;
}
/*
TypeSpecialization:
Type
struct
union
class
interface
enum
function
delegate
super
const
immutable
inout
shared
return
*/
bool specialTest = false;
if (ise.EqualityTest)
{
switch (laKind)
{
case Typedef: // typedef is possible although it's not yet documented in the syntax docs
case Enum:
case Delegate:
case Function:
case Super:
case Return:
specialTest = true;
break;
case Const:
case Immutable:
case InOut:
case Shared:
specialTest = Peek(1).Kind == CloseParenthesis || Lexer.CurrentPeekToken.Kind == Comma;
break;
default:
specialTest = IsClassLike(laKind);
break;
}
}
if (specialTest)
{
Step();
ise.TypeSpecializationToken = t.Kind;
}
else
ise.TypeSpecialization = Type();
// TemplateParameterList
if (laKind == Comma)
{
var tempParam = new List<TemplateParameter>();
do
{
Step();
tempParam.Add(TemplateParameter(null));
}
while (laKind == Comma);
ise.TemplateParameterList = tempParam.ToArray();
}
Expect(CloseParenthesis);
ise.EndLocation = t.EndLocation;
return ise;
default:
if (DTokens.IsMetaIdentifier(laKind))
goto case Dollar;
else if (IsBasicType())
{
// BasicType . Identifier
startLoc = la.Location;
var bt=BasicType();
if ((bt is TypeOfDeclaration || bt is MemberFunctionAttributeDecl) && laKind!=Dot)
return new TypeDeclarationExpression(bt);
// Things like incomplete 'float.' expressions shall be parseable, too
if (Expect(Dot) && (Expect(Identifier) || IsEOF))
return new PostfixExpression_Access()
{
PostfixForeExpression = new TypeDeclarationExpression(bt),
AccessExpression = IsEOF ? new TokenExpression(Incomplete) as IExpression : new IdentifierExpression(t.Value) { Location=t.Location, EndLocation=t.EndLocation },
EndLocation = t.EndLocation
};
return null;
}
SynErr(Identifier);
if(laKind != CloseCurlyBrace)
Step();
if (IsEOF)
return new TokenExpression (DTokens.Incomplete) { Location = t.Location, EndLocation = t.Location };
// Don't know why, in rare situations, t tends to be null..
if (t == null)
return null;
return new TokenExpression() { Location = t.Location, EndLocation = t.EndLocation };
}
}
IExpression PrimaryExpression(IBlockNode Scope=null)
{
bool isModuleScoped = laKind == Dot;
if (isModuleScoped)
{
Step();
if (IsEOF)
{
LastParsedObject = new TokenExpression(Dot) { Location = t.Location, EndLocation = t.EndLocation };
TrackerVariables.ExpectingIdentifier = true;
}
}
// Dollar (== Array length expression)
if (laKind == Dollar || DTokens.MetaIdentifiers[laKind])
{
Step();
return new TokenExpression(t.Kind)
{
Location = t.Location,
EndLocation = t.EndLocation
};
}
// TemplateInstance
if (IsTemplateInstance)
{
var tix = TemplateInstance(Scope);
if (tix != null)
tix.ModuleScopedIdentifier = isModuleScoped;
return tix;
}
if (IsLambaExpression())
return LambaExpression(Scope);
// Identifier
if (laKind == Identifier)
{
Step();
return new IdentifierExpression(t.Value)
{
Location = t.Location,
EndLocation = t.EndLocation,
ModuleScoped = isModuleScoped
};
}
// SpecialTokens (this,super,null,true,false,$) // $ has been handled before
if (laKind == (This) || laKind == (Super) || laKind == (Null) || laKind == (True) || laKind == (False))
{
Step();
return new TokenExpression(t.Kind)
{
Location = t.Location,
EndLocation = t.EndLocation
};
}
#region Literal
if (laKind == Literal)
{
Step();
var startLoc = t.Location;
// Concatenate multiple string literals here
if (t.LiteralFormat == LiteralFormat.StringLiteral || t.LiteralFormat == LiteralFormat.VerbatimStringLiteral)
{
var sb = new StringBuilder(t.RawCodeRepresentation ?? t.Value);
while (la.LiteralFormat == LiteralFormat.StringLiteral || la.LiteralFormat == LiteralFormat.VerbatimStringLiteral)
{
Step();
sb.Append(t.RawCodeRepresentation ?? t.Value);
}
return new IdentifierExpression(sb.ToString(), t.LiteralFormat, t.Subformat) { Location = startLoc, EndLocation = t.EndLocation };
}
//else if (t.LiteralFormat == LiteralFormat.CharLiteral)return new IdentifierExpression(t.LiteralValue) { LiteralFormat=t.LiteralFormat,Location = startLoc, EndLocation = t.EndLocation };
return new IdentifierExpression(t.LiteralValue, t.LiteralFormat, t.Subformat) { Location = startLoc, EndLocation = t.EndLocation };
}
#endregion
#region ArrayLiteral | AssocArrayLiteral
if (laKind == (OpenSquareBracket))
{
Step();
var startLoc = t.Location;
// Empty array literal
if (laKind == CloseSquareBracket)
{
Step();
return new ArrayLiteralExpression(null) {Location=startLoc, EndLocation = t.EndLocation };
}
/*
* If it's an initializer, allow NonVoidInitializers as values.
* Normal AssignExpressions otherwise.
*/
bool isInitializer = TrackerVariables.IsParsingInitializer;
var firstExpression = isInitializer? NonVoidInitializer(Scope) : AssignExpression(Scope);
// Associtative array
if (laKind == Colon)
{
Step();
var ae = isInitializer ?
new ArrayInitializer { Location = startLoc } :
new AssocArrayExpression { Location=startLoc };
LastParsedObject = ae;
var firstValueExpression = isInitializer? NonVoidInitializer(Scope) : AssignExpression();
ae.Elements.Add(new KeyValuePair<IExpression,IExpression>(firstExpression, firstValueExpression));
while (laKind == Comma)
{
Step();
if (laKind == CloseSquareBracket)
break;
var keyExpr = AssignExpression();
var valExpr=Expect(Colon) ?
(isInitializer?
NonVoidInitializer(Scope) :
AssignExpression(Scope)) :
null;
ae.Elements.Add(new KeyValuePair<IExpression,IExpression>(keyExpr,valExpr));
}
Expect(CloseSquareBracket);
ae.EndLocation = t.EndLocation;
return ae;
}
else // Normal array literal
{
var ae = new List<IExpression>();
LastParsedObject = ae;
ae.Add(firstExpression);
while (laKind == Comma)
{
Step();
if (laKind == CloseSquareBracket) // And again, empty expressions are allowed
break;
ae.Add(isInitializer? NonVoidInitializer(Scope) : AssignExpression(Scope));
}
Expect(CloseSquareBracket);
return new ArrayLiteralExpression(ae){ Location=startLoc, EndLocation = t.EndLocation };
}
}
#endregion
#region FunctionLiteral
if (laKind == Delegate || laKind == Function || laKind == OpenCurlyBrace || (laKind == OpenParenthesis && IsFunctionLiteral()))
{
var fl = new FunctionLiteral() { Location=la.Location};
LastParsedObject = fl;
fl.AnonymousMethod.Location = la.Location;
if (laKind == Delegate || laKind == Function)
{
Step();
fl.LiteralToken = t.Kind;
}
// file.d:1248
/*
listdir (".", delegate bool (DirEntry * de)
{
auto s = std.string.format("%s : c %s, w %s, a %s", de.name,
toUTCString (de.creationTime),
toUTCString (de.lastWriteTime),
toUTCString (de.lastAccessTime));
return true;
}
);
*/
if (laKind != OpenCurlyBrace) // foo( 1, {bar();} ); -> is a legal delegate
{
if (!IsFunctionAttribute && Lexer.CurrentPeekToken.Kind == OpenParenthesis)
fl.AnonymousMethod.Type = BasicType();
else if (laKind != OpenParenthesis && laKind != OpenCurlyBrace)
fl.AnonymousMethod.Type = Type();
if (laKind == OpenParenthesis)
fl.AnonymousMethod.Parameters = Parameters(fl.AnonymousMethod);
FunctionAttributes(fl.AnonymousMethod);
}
if(!IsEOF)
FunctionBody(fl.AnonymousMethod);
fl.EndLocation = t.EndLocation;
if (Scope != null)
Scope.Add(fl.AnonymousMethod);
return fl;
}
#endregion
#region AssertExpression
if (laKind == (Assert))
{
Step();
var startLoc = t.Location;
Expect(OpenParenthesis);
var ce = new AssertExpression() { Location=startLoc};
LastParsedObject = ce;
var exprs = new List<IExpression>();
exprs.Add(AssignExpression());
if (laKind == (Comma))
{
Step();
exprs.Add(AssignExpression());
}
ce.AssignExpressions = exprs.ToArray();
Expect(CloseParenthesis);
ce.EndLocation = t.EndLocation;
return ce;
}
#endregion
#region MixinExpression | ImportExpression
if (laKind == Mixin)
{
Step();
var e = new MixinExpression() { Location=t.Location};
LastParsedObject = e;
if (Expect(OpenParenthesis))
{
e.AssignExpression = AssignExpression();
Expect(CloseParenthesis);
}
e.EndLocation = t.EndLocation;
return e;
}
if (laKind == Import)
{
Step();
var e = new ImportExpression() { Location=t.Location};
LastParsedObject = e;
Expect(OpenParenthesis);
e.AssignExpression = AssignExpression();
Expect(CloseParenthesis);
e.EndLocation = t.EndLocation;
return e;
}
#endregion
if (laKind == (Typeof))
{
return new TypeDeclarationExpression(TypeOf());
}
// TypeidExpression
if (laKind == (Typeid))
{
Step();
var ce = new TypeidExpression() { Location=t.Location};
LastParsedObject = ce;
Expect(OpenParenthesis);
if (IsAssignExpression())
ce.Expression = AssignExpression(Scope);
else
{
Lexer.PushLookAheadBackup();
AllowWeakTypeParsing = true;
ce.Type = Type();
AllowWeakTypeParsing = false;
if (ce.Type == null || laKind != CloseParenthesis)
{
Lexer.RestoreLookAheadBackup();
ce.Expression = AssignExpression();
}
else
Lexer.PopLookAheadBackup();
}
if (!Expect(CloseParenthesis) && IsEOF)
LastParsedObject = (ISyntaxRegion)ce.Type ?? ce.Expression;
ce.EndLocation = t.EndLocation;
return ce;
}
#region IsExpression
if (laKind == Is)
{
Step();
var ce = new IsExpression() { Location=t.Location};
LastParsedObject = ce;
Expect(OpenParenthesis);
if((ce.TestedType = Type())==null)
SynErr(laKind, "In an IsExpression, either a type or an expression is required!");
if (ce.TestedType!=null && laKind == Identifier && (Lexer.CurrentPeekToken.Kind == CloseParenthesis || Lexer.CurrentPeekToken.Kind == Equal
|| Lexer.CurrentPeekToken.Kind == Colon))
{
Step();
Strings.Add(strVal);
ce.TypeAliasIdentifierHash = strVal.GetHashCode();
ce.TypeAliasIdLocation = t.Location;
}
if (laKind == CloseParenthesis)
{
Step();
ce.EndLocation = t.EndLocation;
return ce;
}
if (laKind == Colon || laKind == Equal)
{
Step();
ce.EqualityTest = t.Kind == Equal;
}
else if (laKind == CloseParenthesis)
{
Step();
ce.EndLocation = t.EndLocation;
return ce;
}
/*
TypeSpecialization:
Type
struct
union
class
interface
enum
function
delegate
super
const
immutable
inout
shared
return
*/
if (ce.EqualityTest && (ClassLike[laKind] || laKind==Typedef || // typedef is possible although it's not yet documented in the syntax docs
laKind==Enum || laKind==Delegate || laKind==Function || laKind==Super || laKind==Return ||
((laKind==Const || laKind == Immutable || laKind == InOut || laKind == Shared) &&
(Peek(1).Kind==CloseParenthesis || Lexer.CurrentPeekToken.Kind==Comma))))
{
Step();
ce.TypeSpecializationToken = t.Kind;
}
else
ce.TypeSpecialization = Type();
// TemplateParameterList
if (laKind == Comma)
{
var ret = new List<TemplateParameter>();
do
{
Step();
ret.Add(TemplateParameter(null));
}
while (laKind == Comma);
ce.TemplateParameterList = ret.ToArray();
}
Expect(CloseParenthesis);
ce.EndLocation = t.EndLocation;
return ce;
}
#endregion
// NewExpression
if (laKind == (New))
return NewExpression(Scope);
// ( Expression )
if (laKind == OpenParenthesis)
{
Step();
var ret = new SurroundingParenthesesExpression() {Location=t.Location };
LastParsedObject = ret;
ret.Expression = Expression();
Expect(CloseParenthesis);
ret.EndLocation = t.EndLocation;
return ret;
}
// TraitsExpression
if (laKind == (__traits))
return TraitsExpression();
#region BasicType . Identifier
if (IsBasicType())
{
var startLoc = la.Location;
var bt=BasicType();
if ((bt is TypeOfDeclaration || bt is MemberFunctionAttributeDecl) && laKind!=Dot)
return new TypeDeclarationExpression(bt);
// Things like incomplete 'float.' expressions shall be parseable, too
if (Expect(Dot) && (Expect(Identifier) || IsEOF))
return new PostfixExpression_Access()
{
PostfixForeExpression = new TypeDeclarationExpression(bt),
AccessExpression = string.IsNullOrEmpty(t.Value) ? null : new IdentifierExpression(t.Value) { Location=t.Location, EndLocation=t.EndLocation },
EndLocation = t.EndLocation
};
return null;
}
#endregion
SynErr(Identifier);
if(laKind != CloseCurlyBrace)
Step();
// Don't know why, in rare situations, t tends to be null..
if (t == null)
return null;
return new TokenExpression() { Location = t.Location, EndLocation = t.EndLocation };
}
IExpression PrimaryExpression(IBlockNode Scope=null)
{
bool isModuleScoped = false;
// For minimizing possible overhead, skip 'useless' tokens like an initial dot <<< TODO
if (isModuleScoped= laKind == Dot)
Step();
if (laKind == __FILE__ || laKind == __LINE__)
{
Step();
object id = null;
if (t.Kind == __FILE__ && doc != null)
id = doc.FileName;
else if(t.Kind==__LINE__)
id = t.line;
return new IdentifierExpression(id)
{
Location=t.Location,
EndLocation=t.EndLocation
};
}
// Dollar (== Array length expression)
if (laKind == Dollar)
{
Step();
return new TokenExpression(laKind)
{
Location = t.Location,
EndLocation = t.EndLocation
};
}
// TemplateInstance
if (laKind == (Identifier) && Lexer.CurrentPeekToken.Kind == (Not)
&& (Peek().Kind != Is && Lexer.CurrentPeekToken.Kind != In)
/* Very important: The 'template' could be a '!is'/'!in' expression - With two tokens each! */)
return TemplateInstance();
// Identifier
if (laKind == (Identifier))
{
Step();
return new IdentifierExpression(t.Value)
{
Location = t.Location,
EndLocation = t.EndLocation
};
}
// SpecialTokens (this,super,null,true,false,$) // $ has been handled before
if (laKind == (This) || laKind == (Super) || laKind == (Null) || laKind == (True) || laKind == (False))
{
Step();
return new TokenExpression(t.Kind)
{
Location = t.Location,
EndLocation = t.EndLocation
};
}
#region Literal
if (laKind == Literal)
{
Step();
var startLoc = t.Location;
// Concatenate multiple string literals here
if (t.LiteralFormat == LiteralFormat.StringLiteral || t.LiteralFormat == LiteralFormat.VerbatimStringLiteral)
{
var a = t.LiteralValue as string;
while (la.LiteralFormat == LiteralFormat.StringLiteral || la.LiteralFormat == LiteralFormat.VerbatimStringLiteral)
{
Step();
a += t.LiteralValue as string;
}
return new IdentifierExpression(a, t.LiteralFormat) { Location = startLoc, EndLocation = t.EndLocation };
}
//else if (t.LiteralFormat == LiteralFormat.CharLiteral)return new IdentifierExpression(t.LiteralValue) { LiteralFormat=t.LiteralFormat,Location = startLoc, EndLocation = t.EndLocation };
return new IdentifierExpression(t.LiteralValue, t.LiteralFormat) { Location = startLoc, EndLocation = t.EndLocation };
}
#endregion
#region ArrayLiteral | AssocArrayLiteral
if (laKind == (OpenSquareBracket))
{
Step();
var startLoc = t.Location;
// Empty array literal
if (laKind == CloseSquareBracket)
{
Step();
return new ArrayLiteralExpression() {Location=startLoc, EndLocation = t.EndLocation };
}
var firstExpression = AssignExpression();
// Associtative array
if (laKind == Colon)
{
Step();
var ae = new AssocArrayExpression() { Location=startLoc};
LastParsedObject = ae;
var firstValueExpression = AssignExpression();
ae.KeyValuePairs.Add(firstExpression, firstValueExpression);
while (laKind == Comma)
{
Step();
var keyExpr = AssignExpression();
Expect(Colon);
var valueExpr = AssignExpression();
ae.KeyValuePairs.Add(keyExpr, valueExpr);
}
Expect(CloseSquareBracket);
ae.EndLocation = t.EndLocation;
return ae;
}
else // Normal array literal
{
var ae = new ArrayLiteralExpression() { Location=startLoc};
LastParsedObject = ae;
var expressions = new List<IExpression>();
expressions.Add(firstExpression);
while (laKind == Comma)
{
Step();
if (laKind == CloseSquareBracket) // And again, empty expressions are allowed
break;
expressions.Add(AssignExpression());
}
ae.Expressions = expressions;
Expect(CloseSquareBracket);
ae.EndLocation = t.EndLocation;
return ae;
}
}
#endregion
#region FunctionLiteral
if (laKind == Delegate || laKind == Function || laKind == OpenCurlyBrace || (laKind == OpenParenthesis && IsFunctionLiteral()))
{
var fl = new FunctionLiteral() { Location=la.Location};
LastParsedObject = fl;
fl.AnonymousMethod.StartLocation = la.Location;
if (laKind == Delegate || laKind == Function)
{
Step();
fl.LiteralToken = t.Kind;
}
// file.d:1248
/*
listdir (".", delegate bool (DirEntry * de)
{
auto s = std.string.format("%s : c %s, w %s, a %s", de.name,
toUTCString (de.creationTime),
toUTCString (de.lastWriteTime),
toUTCString (de.lastAccessTime));
return true;
}
);
*/
if (laKind != OpenCurlyBrace) // foo( 1, {bar();} ); -> is a legal delegate
{
if (!MemberFunctionAttribute[laKind] && Lexer.CurrentPeekToken.Kind == OpenParenthesis)
fl.AnonymousMethod.Type = BasicType();
else if (laKind != OpenParenthesis && laKind != OpenCurlyBrace)
fl.AnonymousMethod.Type = Type();
if (laKind == OpenParenthesis)
fl.AnonymousMethod.Parameters = Parameters(fl.AnonymousMethod);
}
FunctionBody(fl.AnonymousMethod);
fl.EndLocation = t.EndLocation;
if (Scope != null)
Scope.Add(fl.AnonymousMethod);
return fl;
}
#endregion
#region AssertExpression
if (laKind == (Assert))
{
Step();
var startLoc = t.Location;
Expect(OpenParenthesis);
var ce = new AssertExpression() { Location=startLoc};
LastParsedObject = ce;
var exprs = new List<IExpression>();
exprs.Add(AssignExpression());
if (laKind == (Comma))
{
Step();
exprs.Add(AssignExpression());
}
ce.AssignExpressions = exprs.ToArray();
Expect(CloseParenthesis);
ce.EndLocation = t.EndLocation;
return ce;
}
#endregion
#region MixinExpression | ImportExpression
if (laKind == Mixin)
{
Step();
var e = new MixinExpression() { Location=t.Location};
LastParsedObject = e;
Expect(OpenParenthesis);
e.AssignExpression = AssignExpression();
Expect(CloseParenthesis);
e.EndLocation = t.EndLocation;
return e;
}
if (laKind == Import)
{
Step();
var e = new ImportExpression() { Location=t.Location};
LastParsedObject = e;
Expect(OpenParenthesis);
e.AssignExpression = AssignExpression();
Expect(CloseParenthesis);
e.EndLocation = t.EndLocation;
return e;
}
#endregion
if (laKind == (Typeof))
{
var startLoc = la.Location;
return new TypeDeclarationExpression(TypeOf()) {Location=startLoc,EndLocation=t.EndLocation};
}
// TypeidExpression
if (laKind == (Typeid))
{
Step();
var ce = new TypeidExpression() { Location=t.Location};
LastParsedObject = ce;
Expect(OpenParenthesis);
AllowWeakTypeParsing = true;
ce.Type = Type();
AllowWeakTypeParsing = false;
if (ce.Type==null)
ce.Expression = AssignExpression();
Expect(CloseParenthesis);
ce.EndLocation = t.EndLocation;
return ce;
}
#region IsExpression
if (laKind == Is)
{
Step();
var ce = new IsExpression() { Location=t.Location};
LastParsedObject = ce;
Expect(OpenParenthesis);
var LookAheadBackup = la;
AllowWeakTypeParsing = true;
ce.TestedType = Type();
AllowWeakTypeParsing = false;
if (ce.TestedType!=null && laKind == Identifier && (Lexer.CurrentPeekToken.Kind == CloseParenthesis || Lexer.CurrentPeekToken.Kind == Equal
|| Lexer.CurrentPeekToken.Kind == Colon))
{
Step();
ce.TypeAliasIdentifier = strVal;
}
else
// D Language specs mistake: In an IsExpression there also can be expressions!
if(ce.TestedType==null || !(laKind==CloseParenthesis || laKind==Equal||laKind==Colon))
{
// Reset lookahead token to prior position
la = LookAheadBackup;
// Reset wrongly parsed type declaration
ce.TestedType = null;
ce.TestedExpression = ConditionalExpression();
}
if(ce.TestedExpression==null && ce.TestedType==null)
SynErr(laKind,"In an IsExpression, either a type or an expression is required!");
if (laKind == CloseParenthesis)
{
Step();
ce.EndLocation = t.EndLocation;
return ce;
}
if (laKind == Colon || laKind == Equal)
{
Step();
ce.EqualityTest = t.Kind == Equal;
}
else if (laKind == CloseParenthesis)
{
Step();
ce.EndLocation = t.EndLocation;
return ce;
}
/*
TypeSpecialization:
Type
struct
union
class
interface
enum
function
delegate
super
const
immutable
inout
shared
return
*/
if (ClassLike[laKind] || laKind==Typedef || // typedef is possible although it's not yet documented in the syntax docs
laKind==Enum || laKind==Delegate || laKind==Function || laKind==Super || laKind==Return)
{
Step();
ce.TypeSpecializationToken = t.Kind;
}
else
ce.TypeSpecialization = Type();
if (laKind == Comma)
{
Step();
ce.TemplateParameterList =
TemplateParameterList(false);
}
Expect(CloseParenthesis);
ce.EndLocation = t.EndLocation;
return ce;
}
#endregion
// ( Expression )
if (laKind == OpenParenthesis)
{
Step();
var ret = new SurroundingParenthesesExpression() {Location=t.Location };
LastParsedObject = ret;
ret.Expression = Expression();
Expect(CloseParenthesis);
ret.EndLocation = t.EndLocation;
return ret;
}
// TraitsExpression
if (laKind == (__traits))
return TraitsExpression();
#region BasicType . Identifier
if (laKind == (Const) || laKind == (Immutable) || laKind == (Shared) || laKind == (InOut) || BasicTypes[laKind])
{
Step();
var startLoc = t.Location;
IExpression left = null;
if (!BasicTypes[t.Kind])
{
int tk = t.Kind;
// Put an artificial parenthesis around the following type declaration
if (laKind != OpenParenthesis)
{
var mttd = new MemberFunctionAttributeDecl(tk);
LastParsedObject = mttd;
mttd.InnerType = Type();
left = new TypeDeclarationExpression(mttd) { Location = startLoc, EndLocation = t.EndLocation };
}
else
{
Expect(OpenParenthesis);
var mttd = new MemberFunctionAttributeDecl(tk);
LastParsedObject = mttd;
mttd.InnerType = Type();
Expect(CloseParenthesis);
left = new TypeDeclarationExpression(mttd) { Location = startLoc, EndLocation = t.EndLocation };
}
}
else
left = new TokenExpression(t.Kind) {Location=startLoc,EndLocation=t.EndLocation };
if (laKind == (Dot) && Peek(1).Kind==Identifier)
{
Step();
Step();
var meaex = new PostfixExpression_Access() { PostfixForeExpression=left,
TemplateOrIdentifier=new IdentifierDeclaration(t.Value),EndLocation=t.EndLocation };
return meaex;
}
return left;
}
#endregion
// TODO? Expressions can of course be empty...
//return null;
SynErr(Identifier);
Step();
return new TokenExpression(t.Kind) { Location = t.Location, EndLocation = t.EndLocation };
}
