@Override
public <U extends IValue, V extends IValue> Result<U> fieldUpdate(
String name, Result<V> repl, TypeStore store) {
IConstructor tree = getValue();
if (TreeAdapter.isAppl(tree)) {
int found = -1;
IConstructor foundType = null;
IConstructor prod = TreeAdapter.getProduction(tree);
IList syms = ProductionAdapter.getSymbols(prod);
// TODO: find deeper into optionals, alternatives and sequences checking the actual arguments
// for presence/absence of optional trees.
for (int i = 0; i < syms.length(); i++) {
IConstructor sym = (IConstructor) syms.get(i);
if (SymbolAdapter.isLabel(sym)) {
if (SymbolAdapter.getLabel(sym).equals(name)) {
found = i;
foundType = SymbolAdapter.delabel(sym);
break;
}
}
}
if (found != -1) {
Type nont = RascalTypeFactory.getInstance().nonTerminalType(foundType);
if (repl.getType().isSubtypeOf(nont)) {
IList args = TreeAdapter.getArgs(tree).put(found, repl.getValue());
return makeResult(getType(), tree.set("args", args), ctx);
}
throw new UnexpectedType(nont, repl.getType(), ctx.getCurrentAST());
}
if (Factory.Tree_Appl.hasField(name)) {
Type fieldType = Factory.Tree_Appl.getFieldType(name);
if (repl.getType().isSubtypeOf(fieldType)) {
throw new UnsupportedOperation(
"changing " + name + " in concrete tree", ctx.getCurrentAST());
}
throw new UnexpectedType(fieldType, repl.getType(), ctx.getCurrentAST());
}
throw RuntimeExceptionFactory.noSuchField(name, ctx.getCurrentAST(), ctx.getStackTrace());
}
throw new UnsupportedOperation("field update", ctx.getCurrentAST());
}
@Override
public Result<IBool> has(Name name) {
if (TreeAdapter.isAppl(getValue())) {
IConstructor prod = TreeAdapter.getProduction(getValue());
IList syms = ProductionAdapter.getSymbols(prod);
String tmp = Names.name(name);
// TODO: find deeper into optionals, checking the actual arguments for presence/absence of
// optional trees.
for (IValue sym : syms) {
if (SymbolAdapter.isLabel((IConstructor) sym)) {
if (SymbolAdapter.getLabel((IConstructor) sym).equals(tmp)) {
return ResultFactory.bool(true, ctx);
}
}
}
}
return ResultFactory.bool(false, ctx);
}
@Override
public <U extends IValue> Result<U> fieldAccess(String name, TypeStore store) {
IConstructor tree = getValue();
if (TreeAdapter.isAppl(tree)) {
int found = -1;
IConstructor foundType = null;
IConstructor prod = TreeAdapter.getProduction(tree);
if (!ProductionAdapter.isRegular(prod)) {
IList syms = ProductionAdapter.getSymbols(prod);
// TODO: find deeper into optionals, checking the actual arguments for presence/absence of
// optional trees.
for (int i = 0; i < syms.length(); i++) {
IConstructor sym = (IConstructor) syms.get(i);
while (SymbolAdapter.isConditional(sym)) {
sym = SymbolAdapter.getSymbol(sym);
}
if (SymbolAdapter.isLabel(sym)) {
if (SymbolAdapter.getLabel(sym).equals(name)) {
found = i;
foundType = SymbolAdapter.delabel(sym);
}
}
}
if (found != -1) {
Type nont = RascalTypeFactory.getInstance().nonTerminalType(foundType);
IValue child = TreeAdapter.getArgs(tree).get(found);
return makeResult(nont, child, ctx);
}
}
}
if (tree.getConstructorType().hasField(name)) {
return makeResult(tree.getConstructorType().getFieldType(name), tree.get(name), ctx);
}
throw RuntimeExceptionFactory.noSuchField(name, ctx.getCurrentAST(), ctx.getStackTrace());
}