package org.erlide.engine.services.parsing;
import org.erlide.runtime.api.IOtpRpc;
import org.erlide.runtime.api.ParserException;
import org.erlide.runtime.rpc.RpcException;
import org.erlide.util.ErlLogger;
import org.erlide.util.Util;
import com.ericsson.otp.erlang.OtpErlangAtom;
import com.ericsson.otp.erlang.OtpErlangObject;
import com.ericsson.otp.erlang.OtpErlangString;
import com.ericsson.otp.erlang.OtpErlangTuple;
import com.google.common.base.Preconditions;
public class RuntimeHelper {
private final IOtpRpc target;
public RuntimeHelper(final IOtpRpc target) {
Preconditions.checkArgument(target != null);
this.target = target;
}
public String formatError(final OtpErlangObject object) {
final OtpErlangTuple err = (OtpErlangTuple) object;
final OtpErlangAtom mod = (OtpErlangAtom) err.elementAt(1);
final OtpErlangObject arg = err.elementAt(2);
String res;
try {
OtpErlangObject r = target.call(mod.atomValue(), "format_error", "x", arg);
r = target.call("lists", "flatten", "x", r);
res = ((OtpErlangString) r).stringValue();
} catch (final Exception e) {
ErlLogger.error(e);
res = err.toString();
}
return res;
}
/**
* @param string
* @return
*/
public OtpErlangObject parseConsoleInput(final String string) throws ParserException {
OtpErlangObject r1 = null;
try {
r1 = target.call("erlide_backend", "parse_string", "s", string);
} catch (final Exception e) {
throw new ParserException("Could not parse string \"" + string + "\": "
+ e.getMessage());
}
final OtpErlangTuple t1 = (OtpErlangTuple) r1;
if (Util.isOk(t1)) {
return t1.elementAt(1);
}
throw new ParserException("Could not parse string \"" + string + "\": "
+ t1.elementAt(1).toString());
}
public OtpErlangObject concreteSyntax(final OtpErlangObject val) {
try {
return target.call("erl_syntax", "concrete", "x", val);
} catch (final RpcException e) {
return null;
}
}
}