internal override Expression ResolveNames(Parser parser, System.Collections.Generic.Dictionary <string, Executable> lookup, string[] imports)
{
FunctionDefinition funcDef; // used in multiple places.
FieldDeclaration fieldDec;
this.Root = this.Root.ResolveNames(parser, lookup, imports);
Expression root = this.Root;
string field = this.StepToken.Value;
if (root is PartialNamespaceReference)
{
// already a fully qualified namespace, therefore imports don't matter.
string fullyQualifiedName = ((PartialNamespaceReference)root).Name + "." + field;
if (lookup.ContainsKey(fullyQualifiedName))
{
return(Resolver.ConvertStaticReferenceToExpression(lookup[fullyQualifiedName], this.FirstToken, this.FunctionOrClassOwner));
}
throw new ParserException(this.FirstToken, "Could not find class or function by the name of: '" + fullyQualifiedName + "'");
}
if (root is ClassReference)
{
ClassDefinition cd = ((ClassReference)root).ClassDefinition;
funcDef = cd.GetMethod(field, false);
if (funcDef != null)
{
if (!funcDef.IsStaticMethod)
{
string className = cd.NameToken.Value;
string functionName = funcDef.NameToken.Value;
throw new ParserException(this.DotToken, "'" + className + "." + functionName + "' is not a static method, but it is being used as though it is static.");
}
return(new FunctionReference(this.FirstToken, funcDef, this.FunctionOrClassOwner));
}
fieldDec = cd.GetField(field, false);
if (fieldDec != null)
{
if (!fieldDec.IsStaticField)
{
throw new ParserException(this.DotToken, "Cannot make a static reference to a non-static field.");
}
return(new FieldReference(this.FirstToken, fieldDec, this.FunctionOrClassOwner));
}
// TODO: nested classes, enums, constants
// TODO: show spelling suggestions.
throw new ParserException(this.StepToken, "No static fields or methods named '" + field + "' on the class " + cd.NameToken.Value + ".");
}
if (root is BaseKeyword)
{
ClassDefinition thisClass = null;
if (this.FunctionOrClassOwner != null)
{
if (this.FunctionOrClassOwner is FunctionDefinition)
{
thisClass = this.FunctionOrClassOwner.FunctionOrClassOwner as ClassDefinition;
}
else
{
thisClass = this.FunctionOrClassOwner as ClassDefinition;
}
}
if (thisClass == null)
{
throw new ParserException(root.FirstToken, "'base' keyword can only be used inside classes.");
}
ClassDefinition cd = thisClass.BaseClass;
if (cd == null)
{
throw new ParserException(root.FirstToken, "'base' keyword can only be used inside classes that extend from another class.");
}
FunctionDefinition fd = cd.GetMethod(field, true);
if (fd == null)
{
throw new ParserException(this.DotToken, "Cannot find a method by that name in the base class chain.");
}
if (fd.IsStaticMethod)
{
throw new ParserException(this.DotToken, "Cannot reference static methods using 'base' keyword.");
}
return(new BaseMethodReference(this.FirstToken, this.DotToken, this.StepToken, this.FunctionOrClassOwner));
}
if (root is ThisKeyword)
{
ClassDefinition cd = null;
if (this.FunctionOrClassOwner != null)
{
if (this.FunctionOrClassOwner is FunctionDefinition)
{
funcDef = this.FunctionOrClassOwner as FunctionDefinition;
if (funcDef.IsStaticMethod)
{
throw new ParserException(this.Root.FirstToken, "'this' keyword cannot be used in static methods.");
}
cd = funcDef.FunctionOrClassOwner as ClassDefinition;
if (cd == null)
{
throw new ParserException(this.Root.FirstToken, "'this' keyword must be used inside a class.");
}
}
else if (this.FunctionOrClassOwner is ClassDefinition)
{
cd = (ClassDefinition)this.FunctionOrClassOwner;
}
}
if (cd == null)
{
throw new ParserException(this.Root.FirstToken, "'this' keyword is not allowed here.");
}
funcDef = cd.GetMethod(field, true);
if (funcDef != null)
{
if (funcDef.IsStaticMethod)
{
throw new ParserException(this.DotToken, "This method is static and must be referenced by the class name, not 'this'.");
}
return(new FunctionReference(this.FirstToken, funcDef, this.FunctionOrClassOwner));
}
FieldDeclaration fieldDef = cd.GetField(field, true);
if (fieldDef != null)
{
if (fieldDef.IsStaticField)
{
throw new ParserException(this.DotToken, "This field is static and must be referenced by the class name, not 'this'.");
}
return(new FieldReference(this.FirstToken, fieldDef, this.FunctionOrClassOwner));
}
// TODO: show suggestions in the error message for anything close to what was typed.
throw new ParserException(this.StepToken, "The class '" + cd.NameToken.Value + "' does not have a field named '" + field + "'.");
}
return(this);
}
internal override Expression ResolveNames(
Parser parser)
{
FunctionDefinition funcDef; // used in multiple places.
FieldDeclaration fieldDec;
this.Root = this.Root.ResolveNames(parser);
Expression root = this.Root;
string field = this.StepToken.Value;
if (root is PartialNamespaceReference)
{
// already a fully qualified namespace, therefore imports don't matter.
string fullyQualifiedName = ((PartialNamespaceReference)root).Name + "." + field;
TopLevelConstruct entity = this.Owner.FileScope.FileScopeEntityLookup.DoLookup(fullyQualifiedName, parser.CurrentCodeContainer);
if (entity != null)
{
return(Resolver.ConvertStaticReferenceToExpression(entity, this.FirstToken, this.Owner));
}
throw new ParserException(this.FirstToken, "Could not find class or function by the name of: '" + fullyQualifiedName + "'");
}
if (root is ClassReference)
{
ClassDefinition cd = ((ClassReference)root).ClassDefinition;
funcDef = cd.GetMethod(field, false);
if (funcDef != null)
{
if (!funcDef.IsStaticMethod)
{
string className = cd.NameToken.Value;
string functionName = funcDef.NameToken.Value;
throw new ParserException(this.DotToken, "'" + className + "." + functionName + "' is not a static method, but it is being used as though it is static.");
}
return(new FunctionReference(this.FirstToken, funcDef, this.Owner));
}
fieldDec = cd.GetField(field, false);
if (fieldDec != null)
{
if (!fieldDec.IsStaticField)
{
throw new ParserException(this.DotToken, "Cannot make a static reference to a non-static field.");
}
return(new FieldReference(this.FirstToken, fieldDec, this.Owner));
}
if (field == "class")
{
return(new ClassReferenceLiteral(this.FirstToken, cd, this.Owner));
}
// TODO: nested classes, enums, constants
// TODO: show spelling suggestions.
throw new ParserException(this.StepToken, "No static fields or methods named '" + field + "' on the class " + cd.NameToken.Value + ".");
}
if (root is BaseKeyword)
{
ClassDefinition thisClass = null;
if (this.Owner != null)
{
if (this.Owner is FunctionDefinition)
{
thisClass = this.Owner.Owner as ClassDefinition;
}
else
{
thisClass = this.Owner as ClassDefinition;
}
}
if (thisClass == null)
{
throw new ParserException(root.FirstToken, "'base' keyword can only be used inside classes.");
}
ClassDefinition cd = thisClass.BaseClass;
if (cd == null)
{
throw new ParserException(root.FirstToken, "'base' keyword can only be used inside classes that extend from another class.");
}
FunctionDefinition fd = cd.GetMethod(field, true);
if (fd == null)
{
throw new ParserException(this.DotToken, "Cannot find a method by that name in the base class chain.");
}
if (fd.IsStaticMethod)
{
throw new ParserException(this.DotToken, "Cannot reference static methods using 'base' keyword.");
}
return(new BaseMethodReference(this.FirstToken, this.DotToken, this.StepToken, this.Owner));
}
if (root is ThisKeyword)
{
ClassDefinition cd = null;
if (this.Owner != null)
{
if (this.Owner is FunctionDefinition)
{
funcDef = this.Owner as FunctionDefinition;
if (funcDef.IsStaticMethod)
{
throw new ParserException(this.Root.FirstToken, "'this' keyword cannot be used in static methods.");
}
cd = funcDef.Owner as ClassDefinition;
if (cd == null)
{
throw new ParserException(this.Root.FirstToken, "'this' keyword must be used inside a class.");
}
}
else if (this.Owner is ClassDefinition)
{
cd = (ClassDefinition)this.Owner;
}
}
if (cd == null)
{
throw new ParserException(this.Root.FirstToken, "'this' keyword is not allowed here.");
}
funcDef = cd.GetMethod(field, true);
if (funcDef != null)
{
if (funcDef.IsStaticMethod)
{
throw new ParserException(this.DotToken, "This method is static and must be referenced by the class name, not 'this'.");
}
return(new FunctionReference(this.FirstToken, funcDef, this.Owner));
}
FieldDeclaration fieldDef = cd.GetField(field, true);
if (fieldDef != null)
{
if (fieldDef.IsStaticField)
{
throw new ParserException(this.DotToken, "This field is static and must be referenced by the class name, not 'this'.");
}
return(new FieldReference(this.FirstToken, fieldDef, this.Owner));
}
// TODO: show suggestions in the error message for anything close to what was typed.
throw new ParserException(this.StepToken, "The class '" + cd.NameToken.Value + "' does not have a field named '" + field + "'.");
}
// This is done here in the resolver instead of the parser because some unallowed
// field names (such as .class) are valid.
if (this.StepToken.Value == parser.Keywords.CLASS)
{
if (this.Root is Variable)
{
throw new ParserException(this.Root.FirstToken, "'" + ((Variable)this.Root).Name + "' is not a class.");
}
throw new ParserException(this.DotToken, ".class can only be applied to class names.");
}
parser.VerifyIdentifier(this.StepToken);
return(this);
}
internal override Expression ResolveNames(Parser parser)
{
if (this.Name == "$$$")
{
throw new ParserException(this.FirstToken, "Core function invocations cannot stand alone and must be immediately invoked.");
}
if (this.Name.StartsWith("$$"))
{
return(new LibraryFunctionReference(this.FirstToken, this.Name.Substring(2), this.Owner));
}
if (this.Name == "this" || this.Name == "base")
{
TopLevelConstruct container = parser.CurrentCodeContainer;
if (container is FunctionDefinition)
{
FunctionDefinition funcDef = (FunctionDefinition)this.Owner;
if (funcDef.IsStaticMethod)
{
throw new ParserException(this.FirstToken, "Cannot use '" + this.Name + "' in a static method");
}
if (funcDef.Owner == null)
{
throw new ParserException(this.FirstToken, "Cannot use '" + this.Name + "' in a function that isn't a class method.");
}
}
if (container is FieldDeclaration)
{
if (((FieldDeclaration)container).IsStaticField)
{
throw new ParserException(this.FirstToken, "Cannot use '" + this.Name + "' in a static field value.");
}
}
if (container is ConstructorDefinition)
{
ConstructorDefinition constructor = (ConstructorDefinition)container;
if (constructor == ((ClassDefinition)constructor.Owner).StaticConstructor) // TODO: This check is silly. Add an IsStatic field to ConstructorDefinition.
{
throw new ParserException(this.FirstToken, "Cannot use '" + this.Name + "' in a static constructor.");
}
}
if (this.Name == "this")
{
return(new ThisKeyword(this.FirstToken, this.Owner));
}
return(new BaseKeyword(this.FirstToken, this.Owner));
}
TopLevelConstruct exec = this.Owner.FileScope.FileScopeEntityLookup.DoLookup(this.Name, this.Owner);
if (exec != null)
{
return(Resolver.ConvertStaticReferenceToExpression(exec, this.FirstToken, this.Owner));
}
return(this);
}