public synchronized void add(ScopeSymbol symbol) {
if (symbol.isFunction()) {
// Create hash?
if (functions == null)
functions = new AutoHashMap<String, List<ScopeSymbol>>(new LinkedList<ScopeSymbol>());
// Add function by name
functions.getOrCreate(symbol.getName()).add(symbol);
} else symbols.put(symbol.getName(), symbol);
}
/** Find a function that matches a function call */
public ScopeSymbol findFunction(String functionName, Args args) {
// Retrieve all functions with the same name
List<ScopeSymbol> ssfuncs = getFunctions(functionName);
// Find best matching function...
ScopeSymbol bestSsfunc = null;
int bestScore = Integer.MAX_VALUE;
for (ScopeSymbol ssfunc : ssfuncs) {
boolean ok = false;
int score = 0;
TypeFunc sstype = (TypeFunc) ssfunc.getType();
// Find the ones with the same number of parameters
int argc = args.size();
if (argc == sstype.getParameters().size()) {
ok = true;
// Find the ones with matching exact parameters
for (int i = 0; i < args.size(); i++) {
Type argType = args.getArguments()[i].getReturnType();
Type funcType = sstype.getParameters().getType(i);
// Same argument?
if ((argType != null) && !argType.equals(funcType)) {
// Can we cast?
if (argType.canCast(funcType)) score++; // Add a point if we can cast
else ok = false;
}
}
}
// Found anything?
if (ok) {
// Perfect match? Don't look any further
if (score == 0) return ssfunc;
// Get the one with less argument casts
if (score < bestScore) {
bestScore = score;
bestSsfunc = ssfunc;
}
}
}
return bestSsfunc;
}
@Override
public String serializeSave(BdsSerializer serializer) {
StringBuilder out = new StringBuilder();
out.append("Scope");
out.append("\t" + serializer.serializeSaveValue(id));
out.append("\t" + serializer.serializeSaveValue(parent != null ? parent.getNodeId() : ""));
out.append("\t" + serializer.serializeSaveValue(node));
out.append("\n");
for (ScopeSymbol ss : symbols.values()) {
if (ss.getType().isNative()) {; // Do not save native functions
} else out.append(serializer.serializeSave(ss));
}
if (parent != null) out.append(serializer.serializeSave(parent));
return out.toString();
}
