void
NameResolver::registerFunction(FunctionSymbol *sym)
{
Scope *scope = sym->scope();
assert(scope == globals_);
Symbol *other = scope->localLookup(sym->name());
if (!other) {
scope->addSymbol(sym);
return;
}
// If |other| is not a function, it's an error.
FunctionSymbol *orig = other->asFunction();
if (!orig) {
reportRedeclaration(sym, other);
return;
}
// If both have bodies, it's an error.
FunctionStatement *sym_node = sym->node()->toFunctionStatement();
FunctionStatement *orig_node = orig->node()->toFunctionStatement();
if (sym_node->body() && orig_node->body()) {
reportRedeclaration(sym, other);
return;
}
// Build a shadow list, containing all symbols with this name.
orig->addShadow(orig_node);
orig->addShadow(sym_node);
sym_node->setShadowed(orig);
}
bool
NameResolver::registerSymbol(Symbol *sym)
{
Scope *scope = getOrCreateScope();
if (Symbol *other = scope->localLookup(sym->name())) {
// Report, but allow errors to continue.
reportRedeclaration(sym, other);
return true;
}
return scope->addSymbol(sym);
}