public override IMethodValue VisitFunctionAssignment_Ex([NotNull] ClepsParser.FunctionAssignmentContext context)
{
var oldCurrMethodRegister = CurrMethodGenerator;
VariableManager variableManager = new VariableManager();
VariableManagers.Add(variableManager);
ClepsType returnType = VoidClepsType.GetVoidType();
if (context.FunctionReturnType != null)
{
returnType = Visit(context.FunctionReturnType) as ClepsType;
}
List <ClepsVariable> functionParameters = context._FunctionParameters.Select(p => Visit(p) as ClepsVariable).ToList();
FunctionClepsType functionType = new FunctionClepsType(functionParameters.Select(p => p.VariableType).ToList(), returnType);
var newMethod = CodeGenerator.CreateNewMethod(functionType);
CurrMethodGenerator = newMethod;
CurrMethodGenerator.SetFormalParameterNames(functionParameters.Select(p => p.VariableName).ToList());
functionParameters.ForEach(variable => {
variableManager.AddLocalVariable(variable, CurrMethodGenerator.GetFormalParameterRegister(variable.VariableName));
});
Visit(context.statementBlock());
VariableManagers.RemoveAt(VariableManagers.Count - 1);
CurrMethodGenerator = oldCurrMethodRegister;
return(newMethod);
}
public sealed override object VisitTypenameAndVoid([NotNull] ClepsParser.TypenameAndVoidContext context)
{
if (context.typename() != null)
{
return(Visit(context.typename()));
}
var ret = VoidClepsType.GetVoidType();
return(ret);
}
public sealed override object VisitFunctionAssignment([NotNull] ClepsParser.FunctionAssignmentContext context)
{
var oldCurrentBlockStatus = CurrentBlockStatus;
CurrentBlockStatus = new List <StatementBlockStatus>()
{
new StatementBlockStatus(StatementBlockSource.Function)
};
IMethodValue functionType = VisitFunctionAssignment_Ex(context);
if ((functionType.ExpressionType as FunctionClepsType).ReturnType != VoidClepsType.GetVoidType() && !CurrentBlockStatus.Last().ReturnStatementReached)
{
string errorMessage = "Not all pathways have return statements";
Status.AddError(new CompilerError(FileName, context.Start.Line, context.Start.Column, errorMessage));
}
CurrentBlockStatus = oldCurrentBlockStatus;
return(functionType);
}
private IValue doFunctionCall(ParserRuleContext context, string targetFunctionName, List <IValue> parameters, IValue target, ClepsType targetType, bool allowVoidReturn)
{
IValue dereferencedTarget = target == null? null : GetDereferencedRegisterOrNull(target);
BasicClepsType dereferencedType = target == null? targetType as BasicClepsType : dereferencedTarget.ExpressionType as BasicClepsType;
if (dereferencedType == null)
{
string errorMessage = String.Format("Could not dereference expression on type {0}", targetType.GetClepsTypeString());
Status.AddError(new CompilerError(FileName, context.Start.Line, context.Start.Column, errorMessage));
//just return something to avoid stalling
return(CodeGenerator.CreateByte(0));
}
ClepsClass targetClepsClass = ClassManager.GetClass(dereferencedType.GetClepsTypeString());
List <ClepsVariable> functionOverloads;
bool isStatic;
if (targetClepsClass.StaticMemberMethods.ContainsKey(targetFunctionName))
{
isStatic = true;
functionOverloads = targetClepsClass.StaticMemberMethods[targetFunctionName];
}
else if (target != null && targetClepsClass.MemberMethods.ContainsKey(targetFunctionName))
{
isStatic = false;
functionOverloads = targetClepsClass.MemberMethods[targetFunctionName];
}
else
{
string errorMessage = String.Format("Class {0} does not contain a {1}static function called {2}.", targetClepsClass.FullyQualifiedName, target == null? "" : "member or ", targetFunctionName);
Status.AddError(new CompilerError(FileName, context.Start.Line, context.Start.Column, errorMessage));
//Just return something to avoid stalling compilation
return(CodeGenerator.CreateByte(0));
}
int matchedPosition;
string fnMatchErrorMessage;
if (!FunctionOverloadManager.FindMatchingFunctionType(TypeManager, functionOverloads, parameters, out matchedPosition, out fnMatchErrorMessage))
{
Status.AddError(new CompilerError(FileName, context.Start.Line, context.Start.Column, fnMatchErrorMessage));
//Just return something to avoid stalling compilation
return(CodeGenerator.CreateByte(0));
}
FunctionClepsType chosenFunctionType = functionOverloads[matchedPosition].VariableType as FunctionClepsType;
if (!allowVoidReturn && chosenFunctionType.ReturnType == VoidClepsType.GetVoidType())
{
string errorMessage = String.Format("Function {0} does not return a value", targetFunctionName);
Status.AddError(new CompilerError(FileName, context.Start.Line, context.Start.Column, errorMessage));
//Just return something to avoid stalling compilation
return(CodeGenerator.CreateByte(0));
}
IValue returnValue = CodeGenerator.GetFunctionCallReturnValue(isStatic? null : dereferencedTarget, dereferencedType, targetFunctionName, chosenFunctionType, parameters);
return(returnValue);
}
public void CreateClass(string className)
{
ClassesLoaded.Add(className, null);
ClassInitializers[className] = new JavaScriptMethod(new FunctionClepsType(new List <ClepsType>(), VoidClepsType.GetVoidType()));
ClassStaticInitializers[className] = new JavaScriptMethod(new FunctionClepsType(new List <ClepsType>(), VoidClepsType.GetVoidType()));
//static initializing should occur only once
ClassStaticInitializers[className].CreateIfStatementBlock(new JavaScriptValue("![" + JavaScriptCodeParameters.TOPLEVELNAMESPACE + "." + className + ".classStaticInitialized]", CompilerConstants.ClepsBoolType));
ClassStaticInitializers[className].CreateAssignment(new JavaScriptRegister(JavaScriptCodeParameters.TOPLEVELNAMESPACE + "." + className + ".classStaticInitialized", CompilerConstants.ClepsBoolType), new JavaScriptValue("[true]", CompilerConstants.ClepsBoolType));
}
public void Initiate()
{
FunctionClepsType voidFuncType = new FunctionClepsType(new List <ClepsType>(), VoidClepsType.GetVoidType());
ClassesLoaded = new Dictionary <string, ClepsClass>();
ClassInitializers = new Dictionary <string, JavaScriptMethod>();
ClassStaticInitializers = new Dictionary <string, JavaScriptMethod>();
GlobalInitializer = new JavaScriptMethod(voidFuncType);
EntryPointClass = null;
EntryPointFunctionName = null;
GlobalNativeCodeSnippets = new List <string>();
}
private void GenerateClass(StringBuilder output, ClepsClass clepsClass)
{
FunctionClepsType voidFuncType = new FunctionClepsType(new List <ClepsType>(), VoidClepsType.GetVoidType());
EnsureNamespaceExists(output, clepsClass);
output.AppendLine(JavaScriptCodeParameters.TOPLEVELNAMESPACE + "." + clepsClass.FullyQualifiedName + " = function() {");
{
clepsClass.MemberVariables.ToList().ForEach(kvp => output.AppendFormat("\tthis.{0} = undefined;\n", kvp.Key));
output.AppendFormat("\tthis.{0}();\n", JavaScriptCodeParameters.GetMangledFunctionName("classInitializer", voidFuncType));
output.AppendFormat("\t{0}.{1}.{2}();\n", JavaScriptCodeParameters.TOPLEVELNAMESPACE, clepsClass.FullyQualifiedName, JavaScriptCodeParameters.GetMangledFunctionName("classStaticInitializer", voidFuncType));
}
output.AppendLine("};");
GenerateMethodWithBody(output, clepsClass.FullyQualifiedName, "classInitializer", voidFuncType, false, ClassInitializers[clepsClass.FullyQualifiedName]);
GenerateMethodWithBody(output, clepsClass.FullyQualifiedName, "classStaticInitializer", voidFuncType, true, ClassStaticInitializers[clepsClass.FullyQualifiedName]);
}
public void Output(string directoryName, string fileNameWithoutExtension, CompileStatus status)
{
StringBuilder output = new StringBuilder();
InitializeOutput(output);
foreach (var nativeCodeSnippet in GlobalNativeCodeSnippets)
{
output.AppendLine(nativeCodeSnippet);
}
foreach (var clepsClass in ClassesLoaded)
{
GenerateClass(output, clepsClass.Value);
}
output.AppendLine(GlobalInitializer.GetMethodBodyWithoutDeclaration());
FunctionClepsType voidFuncType = new FunctionClepsType(new List <ClepsType>(), VoidClepsType.GetVoidType());
foreach (var clepsType in CompilerConstants.SystemSupportedTypes)
{
output.AppendFormat("{0}.{1}.{2}();\n", JavaScriptCodeParameters.TOPLEVELNAMESPACE, clepsType.GetClepsTypeString(), JavaScriptCodeParameters.GetMangledFunctionName("classStaticInitializer", voidFuncType));
}
if (!String.IsNullOrWhiteSpace(EntryPointClass) && !String.IsNullOrWhiteSpace(EntryPointFunctionName))
{
output.AppendFormat("{0}.{1}.{2}();\n", JavaScriptCodeParameters.TOPLEVELNAMESPACE, EntryPointClass, JavaScriptCodeParameters.GetMangledFunctionName("classStaticInitializer", voidFuncType));
output.AppendFormat("{0}.{1}.{2}();\n", JavaScriptCodeParameters.TOPLEVELNAMESPACE, EntryPointClass, JavaScriptCodeParameters.GetMangledFunctionName(EntryPointFunctionName, voidFuncType));
}
var outputFileName = Path.Combine(directoryName, fileNameWithoutExtension + ".js");
File.WriteAllText(outputFileName, output.ToString());
}