private static void interpretVariableTemplateMatching(
PatternWithDecoration patternWithDecoration,
InterpretationContext context,
InterpretationResult interpretationResult,
bool multiMatch = false
)
{
Debug.Assert(patternWithDecoration.decoration.type == Decoration.EnumType.VARIABLETEMPLATEMATCHING); // just debug-assert because it has to be hardly checked by the dispatching logic
vmAssert(patternWithDecoration.isBranch, true, "Must be branch!");
vmAssert(patternWithDecoration.referenced.Length >= 1, false, "Must have a pattern to match");
PatternWithDecoration patterToMatch = patternWithDecoration.referenced[0];
// we resolve the variable if it is a variable
if (patterToMatch.@is(PatternWithDecoration.EnumType.VARIABLE))
{
ulong variableIdToResolve = patterToMatch.variableId;
patterToMatch = context.valueByVariable[variableIdToResolve];
}
for (int i = 1; i < patternWithDecoration.referenced.Length; i++)
{
vmAssert(patternWithDecoration.referenced[i].decoration.type == Decoration.EnumType.TUPLE2, true, "Must be tuple2");
Debug.Assert(patternWithDecoration.referenced[i].type == PatternWithDecoration.EnumType.BRANCH); // tuples must be branches, just assert because else it is a bug in the creation of tuple2
Debug.Assert(patternWithDecoration.referenced[i].referenced.Length == 2); // just assert because else it is a bug in the creation of tuple2
PatternWithDecoration templatePattern = patternWithDecoration.referenced[i].referenced[0];
PatternWithDecoration actionPattern = patternWithDecoration.referenced[i].referenced[1];
MatchArguments <Decoration> arguments = new MatchArguments <Decoration>();
IDictionary </*UniqueIdType*/ ulong, PatternWithDecoration> matches = new Dictionary </*UniqueIdType*/ ulong, PatternWithDecoration>(context.valueByVariable); // let it know the current variable assignments
bool isSame;
arguments.bidirectional = false;
arguments.templatePattern = templatePattern;
arguments.matchingPattern = patterToMatch;
bool isMatching = Matcher <Decoration> .match(arguments, matches, out isSame);
if (!isMatching)
{
continue;
}
// we are here if it does match
// excute body
interpretationDispatch(actionPattern, context, interpretationResult);
if (!multiMatch)
{
return; // we return because we don't need to match the other possibilities
}
}
}
private static void interpretSequence(PatternWithDecoration patternWithDecoration, InterpretationContext context, InterpretationResult interpretationResult)
{
Debug.Assert(patternWithDecoration.decoration.type == Decoration.EnumType.SEQUENCE); // just debug-assert because it has to be hardly checked by the dispatching logic
vmAssert(patternWithDecoration.isBranch, true, "Must be branch!");
for (int i = 0; i < patternWithDecoration.referenced.Length; i++)
{
interpretationDispatch(patternWithDecoration.referenced[i], context, interpretationResult);
if (interpretationResult.isInterruptedOrError)
{
return;
}
}
}
static void interpretLoop(PatternWithDecoration patternWithDecoration, InterpretationContext context, InterpretationResult interpretationResult)
{
vmAssert(patternWithDecoration.isBranch, true, "Must be branch!");
vmAssert(patternWithDecoration.referenced.Length == 1, true, "Must have only one parameter");
for (;;)
{
interpretationDispatch(patternWithDecoration.referenced[0], context, interpretationResult);
if (interpretationResult.isInterruptedOrError)
{
return;
}
}
}
public static void interpretationDispatch(PatternWithDecoration patternWithDecoration, InterpretationContext context, InterpretationResult interpretationResult)
{
vmAssert(patternWithDecoration.decoration != null, true, "Must have decoration"); // hard Trace-assert because it is a deep bug if this is violated
if (patternWithDecoration.decoration.type == Decoration.EnumType.SEQUENCE)
{
interpretSequence(patternWithDecoration, context, interpretationResult);
}
else if (patternWithDecoration.decoration.type == Decoration.EnumType.VARIABLETEMPLATEMATCHING)
{
interpretVariableTemplateMatching(patternWithDecoration, context, interpretationResult);
}
else if (patternWithDecoration.decoration.type == Decoration.EnumType.EXEC)
{
interpretExecution(patternWithDecoration, context, interpretationResult);
}
else if (patternWithDecoration.decoration.type == Decoration.EnumType.LOOP)
{
interpretLoop(patternWithDecoration, context, interpretationResult);
}
else
{
vmAssert(false, true, "Invalid interpretation type");
}
}
static void interpretExecution(PatternWithDecoration patternWithDecoration, InterpretationContext context, InterpretationResult interpretationResult)
{
Trace.Assert(patternWithDecoration.decoration != null, "Must have decoration"); // hard Trace-assert because it is a deep bug if this is violated
Debug.Assert(patternWithDecoration.decoration.type == Decoration.EnumType.EXEC);
vmAssert(patternWithDecoration.isBranch, true, "Must be branch!");
vmAssert(patternWithDecoration.referenced.Length >= 1, true, "Not sufficient many parameters!");
Pattern <Decoration> calledName = patternWithDecoration.referenced[0];
string calledNameAsString = Conversion.convertPatternToString(calledName);
int numberOfArguments = patternWithDecoration.referenced.Length - 1;
Pattern <Decoration>[] arguments = patternWithDecoration.referenced.Skip(1).Take(numberOfArguments).ToArray(); // TODO OPTIMZIATION< might be to slow >
// dispatch
vmAssert(context.functionTable.ContainsKey(calledNameAsString), false, "Name " + calledNameAsString + " not found in function table!");
context.functionTable[calledNameAsString](context, arguments, patternWithDecoration);
}