public BaseMethodReference(Token firstToken, Token dotToken, Token stepToken, Executable owner)
: base(firstToken, owner)
{
this.DotToken = dotToken;
this.StepToken = stepToken;
ClassDefinition cd = null;
if (owner is FunctionDefinition)
{
cd = (ClassDefinition)((FunctionDefinition)owner).FunctionOrClassOwner;
}
else if (owner is ClassDefinition)
{
cd = (ClassDefinition)owner;
}
else
{
throw new System.InvalidOperationException(); // this should not happen.
}
this.ClassToWhichThisMethodRefers = cd.BaseClass;
this.FunctionDefinition = this.ClassToWhichThisMethodRefers.GetMethod(this.StepToken.Value, true);
if (this.FunctionDefinition == null)
{
throw new ParserException(this.StepToken, "There is no method named '" + this.StepToken.Value + "' on any base class.");
}
}
protected override void TranslateFunctionDefinition(List<string> output, FunctionDefinition functionDef)
{
output.Add(this.NL);
output.Add(this.CurrentTabIndention);
output.Add("function ");
output.Add("v_" + functionDef.NameToken.Value);
output.Add("(");
for (int i = 0; i < functionDef.ArgNames.Length; ++i)
{
if (i > 0) output.Add(this.Shorten(", "));
string argName = functionDef.ArgNames[i].Value;
output.Add("v_" + argName);
}
output.Add(this.Shorten(") {") + this.NL);
this.CurrentIndention++;
foreach (string varName in functionDef.GetVariableDeclarationList())
{
output.Add(this.CurrentTabIndention);
output.Add("var v_" + varName + this.Shorten(" = null;") + this.NL);
}
Translate(output, functionDef.Code);
this.CurrentIndention--;
output.Add(this.CurrentTabIndention);
output.Add("}" +this.NL);
}
protected override void TranslateFunctionDefinition(List<string> output, FunctionDefinition functionDef)
{
output.Add(this.CurrentTabIndention);
output.Add("public static ");
string returnType = "object";
Annotation returnTypeAnnotation = functionDef.GetAnnotation("type");
if (returnTypeAnnotation != null)
{
returnType = this.CSharpPlatform.GetTypeStringFromAnnotation(returnTypeAnnotation);
}
output.Add(returnType);
output.Add(" ");
output.Add("v_" + functionDef.NameToken.Value);
output.Add("(");
for (int i = 0; i < functionDef.ArgNames.Length; ++i)
{
if (i > 0) output.Add(", ");
if (functionDef.ArgAnnotations[i] == null)
{
output.Add("object ");
}
else
{
string argType = functionDef.ArgAnnotations[i].GetSingleArgAsString(null);
string type = this.CSharpPlatform.GetTypeStringFromAnnotation(functionDef.ArgAnnotations[i].FirstToken, argType);
output.Add(type);
output.Add(" ");
}
output.Add("v_" + functionDef.ArgNames[i].Value);
}
output.Add(")");
output.Add(this.NL);
output.Add(this.CurrentTabIndention);
output.Add("{");
output.Add(this.NL);
this.CurrentIndention++;
Executable[] code = functionDef.Code;
if (functionDef.GetAnnotation("omitReturn") != null)
{
Executable[] newCode = new Executable[code.Length - 1];
Array.Copy(code, newCode, newCode.Length);
code = newCode;
}
this.Translate(output, code);
this.CurrentIndention--;
output.Add(this.CurrentTabIndention);
output.Add("}");
output.Add(this.NL);
}
internal override Expression Resolve(Parser parser)
{
for (int i = 0; i < this.Args.Length; ++i)
{
this.Args[i] = this.Args[i].Resolve(parser);
}
if (this.Root is Variable)
{
string varName = ((Variable)this.Root).Name;
if (parser.GetClass(varName) != null)
{
throw new ParserException(this.ParenToken, "Cannot invoke a class like a function. To construct a new class, the \"new\" keyword must be used.");
}
}
this.Root = this.Root.Resolve(parser);
// TODO: this is hardcoded just for Math.floor(numeric constant). Eventually, it'd be nice
// for a few common functions to have a compile-time codepath here.
// e.g. Core.parseInt, Math.sin, etc.
if (this.Root is FunctionReference && this.Args.Length == 1)
{
FunctionDefinition funcDef = ((FunctionReference)this.Root).FunctionDefinition;
if (funcDef.LibraryName == "Math" && funcDef.NameToken.Value == "floor")
{
Expression arg0 = this.Args[0];
if (arg0 is IntegerConstant)
{
int integerValue = ((IntegerConstant)arg0).Value;
return(new IntegerConstant(this.FirstToken, integerValue, this.FunctionOrClassOwner));
}
if (arg0 is FloatConstant)
{
double floatValue = ((FloatConstant)arg0).Value;
int integerValue = (int)floatValue;
return(new IntegerConstant(this.FirstToken, integerValue, this.FunctionOrClassOwner));
}
}
}
if (this.Root is SpecialEntity)
{
if (this.Root is SpecialEntity.EnumMaxFunction)
{
int max = ((SpecialEntity.EnumMaxFunction) this.Root).GetMax();
return(new IntegerConstant(this.Root.FirstToken, max, this.FunctionOrClassOwner));
}
if (this.Root is SpecialEntity.EnumValuesFunction)
{
int[] rawValues = ((SpecialEntity.EnumValuesFunction) this.Root).GetValues();
List <Expression> values = new List <Expression>();
foreach (int rawValue in rawValues)
{
values.Add(new IntegerConstant(this.Root.FirstToken, rawValue, this.FunctionOrClassOwner));
}
return(new ListDefinition(this.FirstToken, values, this.FunctionOrClassOwner));
}
}
return(this);
}
public FunctionReference(Token token, FunctionDefinition funcDef, Executable owner)
: base(token, owner)
{
this.FunctionDefinition = funcDef;
}
internal override Expression ResolveNames(Parser parser, Dictionary <string, Executable> lookup, string[] imports)
{
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.FunctionOrClassOwner));
}
if (this.Name == "this" || this.Name == "base")
{
Executable container = parser.CurrentCodeContainer;
if (container is FunctionDefinition)
{
FunctionDefinition funcDef = (FunctionDefinition)this.FunctionOrClassOwner;
if (funcDef.IsStaticMethod)
{
throw new ParserException(this.FirstToken, "Cannot use '" + this.Name + "' in a static method");
}
if (funcDef.FunctionOrClassOwner == 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.FunctionOrClassOwner).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.FunctionOrClassOwner));
}
return(new BaseKeyword(this.FirstToken, this.FunctionOrClassOwner));
}
Executable exec = DoNameLookup(lookup, imports, this.FunctionOrClassOwner.LocalNamespace, this.Name);
if (exec != null)
{
return(Resolver.ConvertStaticReferenceToExpression(exec, this.FirstToken, this.FunctionOrClassOwner));
}
return(this);
}
internal override Expression ResolveNames(
Parser parser,
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));
}
if (field == "class")
{
return(new ClassReferenceLiteral(this.FirstToken, cd, 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 + "'.");
}
// 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);
}
private static Executable ParseFunction(Parser parser, TokenStream tokens, Executable nullableOwner)
{
bool isStatic =
nullableOwner != null &&
nullableOwner is ClassDefinition &&
tokens.PopIfPresent("static");
Token functionToken = tokens.PopExpected("function");
List<Annotation> functionAnnotations = new List<Annotation>();
while (tokens.IsNext("@"))
{
functionAnnotations.Add(AnnotationParser.ParseAnnotation(tokens));
}
Token functionNameToken = tokens.Pop();
Parser.VerifyIdentifier(functionNameToken);
FunctionDefinition fd = new FunctionDefinition(functionToken, nullableOwner, isStatic, functionNameToken, functionAnnotations, parser.CurrentNamespace);
tokens.PopExpected("(");
List<Token> argNames = new List<Token>();
List<Expression> defaultValues = new List<Expression>();
List<Annotation> argAnnotations = new List<Annotation>();
bool optionalArgFound = false;
while (!tokens.PopIfPresent(")"))
{
if (argNames.Count > 0) tokens.PopExpected(",");
Annotation annotation = tokens.IsNext("@") ? AnnotationParser.ParseAnnotation(tokens) : null;
Token argName = tokens.Pop();
Expression defaultValue = null;
Parser.VerifyIdentifier(argName);
if (tokens.PopIfPresent("="))
{
optionalArgFound = true;
defaultValue = ExpressionParser.Parse(tokens, fd);
}
else if (optionalArgFound)
{
throw new ParserException(argName, "All optional arguments must come at the end of the argument list.");
}
argAnnotations.Add(annotation);
argNames.Add(argName);
defaultValues.Add(defaultValue);
}
IList<Executable> code = Parser.ParseBlock(parser, tokens, true, fd);
fd.ArgNames = argNames.ToArray();
fd.DefaultValues = defaultValues.ToArray();
fd.ArgAnnotations = argAnnotations.ToArray();
fd.Code = code.ToArray();
return fd;
}
public FunctionReference(Token token, FunctionDefinition funcDef, Executable owner)
: base(token, owner)
{
this.FunctionDefinition = funcDef;
}
internal override void Resolve(Parser parser)
{
if (parser.IsInClass)
{
throw new ParserException(this.FirstToken, "Nested classes aren't a thing, yet.");
}
if (parser.IsReservedKeyword(this.NameToken.Value))
{
throw new ParserException(this.NameToken, "'" + this.NameToken.Value + "' is a reserved keyword.");
}
parser.CurrentClass = this;
for (int i = 0; i < this.Fields.Length; ++i)
{
FieldDeclaration field = this.Fields[i];
field.Resolve(parser);
this.Fields[i] = field;
if (this.StaticToken != null && !field.IsStaticField)
{
throw new ParserException(field.FirstToken, "Cannot have a non-static field in a static class.");
}
}
for (int i = 0; i < this.Methods.Length; ++i)
{
FunctionDefinition funcDef = this.Methods[i];
funcDef.Resolve(parser);
this.Methods[i] = funcDef;
if (this.StaticToken != null && !funcDef.IsStaticMethod)
{
throw new ParserException(funcDef.FirstToken, "Cannot have a non-static method in a static class.");
}
}
this.Constructor.Resolve(parser);
if (this.StaticToken != null && !this.Constructor.IsDefault)
{
throw new ParserException(this.Constructor.FirstToken, "Static classes cannot have a non-static constructor.");
}
if (this.StaticConstructor != null)
{
this.StaticConstructor.Resolve(parser);
}
parser.CurrentClass = null;
bool hasABaseClass = this.BaseClass != null;
bool callsBaseConstructor = this.Constructor.BaseToken != null;
if (hasABaseClass)
{
if (this.BaseClass.FinalToken != null)
{
throw new ParserException(this.FirstToken, "This class extends from " + this.BaseClass.NameToken.Value + " which is marked as final.");
}
if (this.BaseClass.StaticToken != null)
{
throw new ParserException(this.FirstToken, "This class extends from " + this.BaseClass.NameToken.Value + " which is marked as static.");
}
}
if (hasABaseClass && callsBaseConstructor)
{
Expression[] defaultValues = this.BaseClass.Constructor.DefaultValues;
int maxValues = defaultValues.Length;
int minValues = 0;
for (int i = 0; i < maxValues; ++i)
{
if (defaultValues[i] == null)
{
minValues++;
}
else
{
break;
}
}
int baseArgs = this.Constructor.BaseArgs.Length;
if (baseArgs < minValues || baseArgs > maxValues)
{
throw new ParserException(this.Constructor.BaseToken, "Invalid number of arguments passed to base constructor.");
}
}
else if (hasABaseClass && !callsBaseConstructor)
{
if (this.BaseClass.Constructor != null)
{
throw new ParserException(this.FirstToken, "The base class of this class has a constructor which must be called.");
}
}
else if (!hasABaseClass && callsBaseConstructor)
{
throw new ParserException(this.Constructor.BaseToken, "Cannot call base constructor without a base class.");
}
else // (!hasABaseClass && !callsBaseConstructor)
{
// yeah, that's fine.
}
}
public FunctionReference(Token token, FunctionDefinition funcDef, TopLevelConstruct owner)
: base(token, owner)
{
this.FunctionDefinition = funcDef;
}
private void CompileFunctionDefinition(Parser parser, ByteBuffer buffer, FunctionDefinition funDef, bool isMethod)
{
if (funDef.FunctionID == 13)
{
}
ByteBuffer tBuffer = new ByteBuffer();
List<int> offsetsForOptionalArgs = new List<int>();
this.CompileFunctionArgs(parser, tBuffer, funDef.ArgNames, funDef.DefaultValues, offsetsForOptionalArgs);
Compile(parser, tBuffer, funDef.Code);
int offset = tBuffer.Size;
int minArgCount = 0;
for (int i = 0; i < funDef.DefaultValues.Length; ++i)
{
if (funDef.DefaultValues[i] != null)
{
break;
}
minArgCount++;
}
List<int> args = new List<int>()
{
funDef.FunctionID,
parser.GetId(funDef.NameToken.Value), // local var to save in
minArgCount,
funDef.ArgNames.Length, // max number of args supplied
isMethod ? (funDef.IsStaticMethod ? 2 : 1) : 0, // type (0 - function, 1 - method, 2 - static method)
isMethod ? ((ClassDefinition)funDef.FunctionOrClassOwner).ClassID : 0,
funDef.LocalScopeSize,
tBuffer.Size,
offsetsForOptionalArgs.Count
};
args.AddRange(offsetsForOptionalArgs);
buffer.Add(
funDef.FirstToken,
OpCode.FUNCTION_DEFINITION, args.ToArray());
buffer.Concat(tBuffer);
}
protected abstract void TranslateFunctionDefinition(List<string> output, FunctionDefinition functionDef);
private void TranslateFunctionDefinitionWrapped(List<string> output, FunctionDefinition functionDef)
{
foreach (Expression expr in functionDef.DefaultValues)
{
if (expr != null)
{
throw new ParserException(functionDef.FirstToken, "Code translation mode does not support function argument default values.");
}
}
this.TranslateFunctionDefinition(output, functionDef);
}