public void InvokeStaticFunction(string className, string functionName, ExpressionList parameters, int line, int column) {
SymbolTableEntry cdEntry = SymbolTable.GetInstance().LookupGlobal(className, SymbolTable.CLASS);
// type is defined in an referenced assembly
if (cdEntry == null) {
Type t = SymbolTable.GetInstance().GetExternalType(className);
IlGen.Emit(OpCodes.Ldstr, t.AssemblyQualifiedName);
IlGen.Emit(OpCodes.Newobj, typeof(ArrayList).GetConstructor(Type.EmptyTypes));
foreach (Expression expr in parameters) {
IlGen.Emit(OpCodes.Dup);
Visit(expr);
IlGen.Emit(OpCodes.Call, typeof(ArrayList).GetMethod("Add", new Type[] { typeof(object) }));
IlGen.Emit(OpCodes.Pop);
}
IlGen.Emit(OpCodes.Ldstr, functionName);
IlGen.Emit(OpCodes.Call, PHPRuntimeCore.GetMethod("InvokeExternalStaticFunction", new Type[] { typeof(string), typeof(ArrayList), typeof(object) }));
}
// type is defined in script
else {
CLASS_DECLARATION cd = (CLASS_DECLARATION)cdEntry.Node;
CLASS_DECLARATION tmpCD = cd;
SymbolTableEntry fdEntry = tmpCD.Scope.Lookup(functionName, SymbolTable.FUNCTION);
while (fdEntry == null) {
if (tmpCD.Extends == null)
break;
SymbolTableEntry parentCDEntry = SymbolTable.GetInstance().LookupGlobal(tmpCD.Extends, SymbolTable.CLASS);
tmpCD = (CLASS_DECLARATION)parentCDEntry.Node;
fdEntry = tmpCD.Scope.Lookup(functionName, SymbolTable.FUNCTION);
if (fdEntry != null && !((FUNCTION_DECLARATION)fdEntry.Node).Modifiers.Contains(Modifiers.STATIC)) {
Report.Error(215, functionName, line, column);
IlGen.Emit(OpCodes.Ldnull);
return;
}
if (fdEntry != null && ((FUNCTION_DECLARATION)fdEntry.Node).Modifiers.Contains(Modifiers.PRIVATE)) {
Report.Error(217, functionName, line, column);
IlGen.Emit(OpCodes.Ldnull);
return;
}
}
if (fdEntry == null) {
Report.Error(216, functionName, line, column);
IlGen.Emit(OpCodes.Ldnull);
return;
}
FUNCTION_DECLARATION fd = (FUNCTION_DECLARATION)fdEntry.Node;
if (!fd.Modifiers.Contains(Modifiers.STATIC)) {
Report.Error(215, functionName, line, column);
IlGen.Emit(OpCodes.Ldnull);
return;
}
// pass parameters (only as many as needed)
int parametersPassedActually = (int)Math.Min(fd.Parameters.Count, parameters.Count());
for (int i = 0; i < parametersPassedActually; i++) {
PARAMETER_DECLARATION pd = (PARAMETER_DECLARATION)fd.Parameters[i];
Expression expr = (Expression)parameters.Get(i);
// ensure a reference is passed, if a reference is required
if (pd.ByReference && !(expr is REFERENCE))
expr = new REFERENCE(expr, expr.Line, expr.Column);
// process parameter
Visit(expr);
}
// if less parameters actually passed then necessary, pass nulls instead
for (int i = parametersPassedActually; i < fd.Parameters.Count; i++) {
PARAMETER_DECLARATION pd = (PARAMETER_DECLARATION)fd.Parameters[i];
if (pd.DefaultValue == null)
Report.Warn(300, System.Convert.ToString(i + 1), line, column);
IlGen.Emit(OpCodes.Ldnull);
}
// add function call to call trace
IlGen.Emit(OpCodes.Ldstr, CD.Name + "->" + fd.Name);
IlGen.Emit(OpCodes.Call, PHPRuntimeCore.GetMethod("AddFunctionCallToTrace", new Type[] { typeof(string) }));
// call
MethodBuilder mb = fd.MthBld;
IlGen.Emit(OpCodes.Call, mb);
// remove function call from call trace
IlGen.Emit(OpCodes.Call, PHPRuntimeCore.GetMethod("RemoveFunctionCallFromTrace", Type.EmptyTypes));
}
}
public void PushParameters(ExpressionList parameters, int number) {
int parametersPushed = 0;
// push parameters available, until desired number is reached
while (parametersPushed < number && parametersPushed < parameters.Count())
Visit(parameters.Get(parametersPushed++));
// if not enough parameters were available, fill up with nulls
while (parametersPushed < number) {
IlGen.Emit(OpCodes.Ldnull);
parametersPushed++;
}
}