/** Parses the input concrete S-expression syntax to produce a command instance */
public static /*@Nullable*/ C_what parse(Parser p) throws IOException, ParserException {
if (!p.smt().relax) {
error(p.smt(), "Invalid SMT-LIB command: " + commandName, p.commandName.pos());
return null;
}
List<IIdentifier> ids = new LinkedList<IIdentifier>();
while (!p.isRP()) {
if (p.isEOD()) {
p.smt()
.log
.logError(
p.smt()
.responseFactory
.error(
"Unexpected end of data while parsing a what command",
p.savedlp == null
? null
: p.pos(p.savedlp.pos().charStart(), p.currentPos())));
// Note: actually p.savedlp should not ever be null - a bit defensive here
return null;
}
IIdentifier id = p.parseIdentifier();
if (id == null) return null;
ids.add(id);
}
return new C_what(ids);
}
/** Parses the arguments of the command, producing a new command instance */
public static /*@Nullable*/ C_declare_const parse(Parser p) throws ParserException {
/*@Nullable*/ ISymbol symbol = p.parseSymbol();
if (symbol == null) return null;
/*@Nullable*/ ISort result = p.parseSort(null);
if (result == null) return null;
String v = symbol.value();
if (v.length() > 0 && (v.charAt(0) == '@' || v.charAt(0) == '.')) {
error(p.smt(), "User-defined symbols may not begin with . or @", symbol.pos());
return null;
}
return new C_declare_const(symbol, result);
}
/** Parses the arguments of the command, producing a new command instance */
public static /*@Nullable*/ C_assert parse(Parser p) throws IOException, ParserException {
IExpr expr = p.parseExpr();
if (expr == null) return null;
return new C_assert(expr);
}