package org.erlide.engine.internal.services.search;
import java.util.Collection;
import java.util.List;
import java.util.concurrent.TimeUnit;
import org.eclipse.core.runtime.IPath;
import org.erlide.engine.model.SourcePathUtils;
import org.erlide.engine.services.search.OpenResult;
import org.erlide.engine.services.search.OpenService;
import org.erlide.runtime.rpc.IOtpRpc;
import org.erlide.runtime.rpc.RpcException;
import org.erlide.util.ErlLogger;
import org.erlide.util.Util;
import org.erlide.util.erlang.OtpErlang;
import com.ericsson.otp.erlang.OtpErlangAtom;
import com.ericsson.otp.erlang.OtpErlangList;
import com.ericsson.otp.erlang.OtpErlangObject;
import com.ericsson.otp.erlang.OtpErlangString;
import com.ericsson.otp.erlang.OtpErlangTuple;
import com.google.common.base.Stopwatch;
import com.google.common.collect.Lists;
public class ErlideOpen implements OpenService {
private static final String ERLIDE_OPEN = "erlide_open";
private final IOtpRpc ideBackend;
private final String stateDir;
public ErlideOpen(final IOtpRpc backend, final String stateDir) {
ideBackend = backend;
this.stateDir = stateDir;
}
@Override
public OtpErlangObject getSourceFromModule(final OtpErlangList pathVars,
final String mod, final String externalModules) throws RpcException {
final OtpErlangObject res2 = ideBackend.call(ERLIDE_OPEN,
"get_source_from_module", "ax", mod,
mkContext(externalModules, null, pathVars, null, null));
return res2;
}
@Override
@SuppressWarnings("boxing")
public OpenResult open(final String scannerName, final int offset,
final List<OtpErlangObject> imports, final String externalModules,
final OtpErlangList pathVars) throws RpcException {
// ErlLogger.debug("open offset " + offset);
final Collection<IPath> extra = SourcePathUtils.getExtraSourcePaths();
final OtpErlangObject res = ideBackend.call(ERLIDE_OPEN, "open", "aix",
scannerName, offset,
mkContext(externalModules, null, pathVars, extra, imports));
return new OpenResult(res);
}
@Override
@SuppressWarnings("boxing")
public OpenResult openText(final String text, final int offset) throws RpcException {
final OtpErlangObject res = ideBackend.call(ERLIDE_OPEN, "open_text", "si", text,
offset);
return new OpenResult(res);
}
@Override
public OtpErlangTuple mkContext(final String externalModules,
final String externalIncludes, final OtpErlangList pathVars,
final Collection<IPath> extraSourcePaths,
final Collection<OtpErlangObject> imports) {
final OtpErlangAtom tag = new OtpErlangAtom("open_context");
final OtpErlangAtom UNDEFINED = new OtpErlangAtom("undefined");
final List<OtpErlangObject> result = Lists.newArrayList();
// order must match definition of #open_context !
// TODO use a proplist instead?
result.add(tag);
result.add(externalModules != null ? new OtpErlangString(externalModules)
: UNDEFINED);
result.add(externalIncludes != null ? new OtpErlangString(externalIncludes)
: UNDEFINED);
result.add(pathVars != null ? pathVars : UNDEFINED);
result.add(extraSourcePaths != null ? OtpErlang.mkStringList(extraSourcePaths)
: UNDEFINED);
result.add(imports != null ? OtpErlang.mkList(imports) : UNDEFINED);
return new OtpErlangTuple(result.toArray(new OtpErlangObject[] {}));
}
@Override
public OtpErlangTuple findFirstVar(final String name, final String source) {
try {
final OtpErlangObject res = ideBackend.call(ERLIDE_OPEN, "find_first_var",
"as", name, source);
if (res instanceof OtpErlangTuple) {
return (OtpErlangTuple) res;
}
} catch (final RpcException e) {
ErlLogger.warn(e);
}
return null;
}
@Override
public List<ExternalTreeEntry> getExternalModuleTree(final IOtpRpc backend,
final String externalModules, final OtpErlangList pathVars) {
ErlLogger.debug("open:external_module_tree -> " + externalModules);
final Stopwatch stopwatch = Stopwatch.createStarted();
try {
final OtpErlangObject res = backend.call(ERLIDE_OPEN,
"get_external_module_tree", "x",
mkContext(externalModules, null, pathVars, null, null));
if (Util.isOk(res)) {
OtpErlangTuple t = (OtpErlangTuple) res;
final OtpErlangList l = (OtpErlangList) t.elementAt(1);
final List<ExternalTreeEntry> result = Lists
.newArrayListWithCapacity(l.arity());
for (final OtpErlangObject i : l) {
t = (OtpErlangTuple) i;
final String parentPath = Util.stringValue(t.elementAt(0));
final String path = Util.stringValue(t.elementAt(1));
// final String name = Util.stringValue(t.elementAt(2));
// final OtpErlangAtom isModuleA = (OtpErlangAtom) t
// .elementAt(3);
final OtpErlangAtom isModuleA = (OtpErlangAtom) t.elementAt(2);
result.add(new ExternalTreeEntry(parentPath, path,// name,
isModuleA.atomValue().equals("module")));
}
final String msg = "open:external_module_tree <- " + stopwatch;
if (stopwatch.elapsed(TimeUnit.SECONDS) > 5) {
ErlLogger.warn("WARNING " + msg);
} else {
ErlLogger.debug(msg);
}
return result;
}
} catch (final RpcException e) {
ErlLogger.warn("open:external_module_tree TIMEOUT <- " + stopwatch);
ErlLogger.warn(e);
}
return Lists.newArrayList();
}
@Override
public String getExternalInclude(final String filePath, final String externalIncludes,
final OtpErlangList pathVars) {
try {
final OtpErlangObject res = ideBackend.call(ERLIDE_OPEN,
"get_external_include", "sx", filePath,
mkContext(null, externalIncludes, pathVars, null, null));
if (Util.isOk(res)) {
final OtpErlangTuple t = (OtpErlangTuple) res;
return Util.stringValue(t.elementAt(1));
}
} catch (final RpcException e) {
ErlLogger.error(e);
}
return null;
}
@Override
public OtpErlangList getOtpLibStructure(final IOtpRpc backend) {
try {
final OtpErlangObject res = backend.call(ERLIDE_OPEN, "get_otp_lib_structure",
"s", stateDir);
if (Util.isOk(res)) {
final OtpErlangTuple tres = (OtpErlangTuple) res;
final OtpErlangList lot = (OtpErlangList) tres.elementAt(1);
return lot;
}
ErlLogger.error(res.toString());
} catch (final RpcException e) {
ErlLogger.error(e);
}
return null;
}
@Override
public List<String> getLibFiles(final String entry) {
try {
final OtpErlangObject res = ideBackend.call(ERLIDE_OPEN, "get_lib_files",
"ss", entry, stateDir);
if (Util.isOk(res)) {
final OtpErlangTuple t = (OtpErlangTuple) res;
final OtpErlangList l = (OtpErlangList) t.elementAt(1);
final List<String> result = Lists.newArrayListWithCapacity(l.arity());
for (final OtpErlangObject o : l) {
result.add(Util.stringValue(o));
}
return result;
}
} catch (final RpcException e) {
ErlLogger.error(e);
}
return null;
}
@Override
public Collection<String> getIncludesInDir(final String directory) {
try {
final OtpErlangObject res = ideBackend.call(ERLIDE_OPEN,
"get_includes_in_dir", "s", directory);
if (Util.isOk(res)) {
final OtpErlangTuple t = (OtpErlangTuple) res;
final OtpErlangList l = (OtpErlangList) t.elementAt(1);
final List<String> result = Lists.newArrayListWithCapacity(l.arity());
for (final OtpErlangObject object : l) {
result.add(Util.stringValue(object));
}
return result;
}
} catch (final RpcException e) {
ErlLogger.error(e);
}
return null;
}
}