/*
* Copyright 2009 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.gwt.core.linker;
import com.google.gwt.core.ext.LinkerContext;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.core.ext.linker.AbstractLinker;
import com.google.gwt.core.ext.linker.ArtifactSet;
import com.google.gwt.core.ext.linker.CompilationResult;
import com.google.gwt.core.ext.linker.EmittedArtifact;
import com.google.gwt.core.ext.linker.LinkerOrder;
import com.google.gwt.core.ext.linker.SelectionProperty;
import com.google.gwt.core.ext.linker.SymbolData;
import com.google.gwt.core.ext.linker.LinkerOrder.Order;
import java.io.ByteArrayOutputStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.Map;
import java.util.SortedMap;
/**
* This Linker exports the symbol maps associated with each compilation result
* as a private file. The names of the symbol maps files are computed by
* appending {@value #STRONG_NAME_SUFFIX} to the value returned by
* {@link CompilationResult#getStrongName()}.
*/
@LinkerOrder(Order.POST)
public class SymbolMapsLinker extends AbstractLinker {
/**
* This value is appended to the strong name of the CompilationResult to form
* the symbol map's filename.
*/
public static final String STRONG_NAME_SUFFIX = ".symbolMap";
public static String propertyMapToString(
Map<SelectionProperty, String> propertyMap) {
StringWriter writer = new StringWriter();
PrintWriter pw = new PrintWriter(writer);
printPropertyMap(pw, propertyMap);
pw.flush();
return writer.toString();
}
private static void printPropertyMap(PrintWriter pw,
Map<SelectionProperty, String> map) {
boolean needsComma = false;
for (Map.Entry<SelectionProperty, String> entry : map.entrySet()) {
if (needsComma) {
pw.print(" , ");
} else {
needsComma = true;
}
pw.print("'");
pw.print(entry.getKey().getName());
pw.print("' : '");
pw.print(entry.getValue());
pw.print("'");
}
}
@Override
public String getDescription() {
return "Export CompilationResult symbol maps";
}
@Override
public ArtifactSet link(TreeLogger logger, LinkerContext context,
ArtifactSet artifacts) throws UnableToCompleteException {
artifacts = new ArtifactSet(artifacts);
ByteArrayOutputStream out = new ByteArrayOutputStream();
for (CompilationResult result : artifacts.find(CompilationResult.class)) {
PrintWriter pw = new PrintWriter(out);
doWriteSymbolMap(logger, result, pw);
pw.close();
doEmitSymbolMap(logger, artifacts, result, out);
out.reset();
}
return artifacts;
}
/**
* Override to change the manner in which the symbol map is emitted.
*/
protected void doEmitSymbolMap(TreeLogger logger, ArtifactSet artifacts,
CompilationResult result, ByteArrayOutputStream out)
throws UnableToCompleteException {
EmittedArtifact symbolMapArtifact = emitBytes(logger, out.toByteArray(),
result.getStrongName() + STRONG_NAME_SUFFIX);
symbolMapArtifact.setPrivate(true);
artifacts.add(symbolMapArtifact);
}
/**
* Override to change the format of the symbol map.
*
* @param logger the logger to write to
* @param result the compilation result
* @param pw the output PrintWriter
*
* @throws UnableToCompleteException if an error occurs
*/
protected void doWriteSymbolMap(TreeLogger logger, CompilationResult result,
PrintWriter pw) throws UnableToCompleteException {
pw.println("# { " + result.getPermutationId() + " }");
for (SortedMap<SelectionProperty, String> map : result.getPropertyMap()) {
pw.print("# { ");
printPropertyMap(pw, map);
pw.println(" }");
}
pw.println("# jsName, jsniIdent, className, memberName, sourceUri, sourceLine");
StringBuilder sb = new StringBuilder(1024);
char[] buf = new char[1024];
for (SymbolData symbol : result.getSymbolMap()) {
sb.append(symbol.getSymbolName());
sb.append(',');
String jsniIdent = symbol.getJsniIdent();
if (jsniIdent != null) {
sb.append(jsniIdent);
}
sb.append(',');
sb.append(symbol.getClassName());
sb.append(',');
String memberName = symbol.getMemberName();
if (memberName != null) {
sb.append(memberName);
}
sb.append(',');
String sourceUri = symbol.getSourceUri();
if (sourceUri != null) {
sb.append(sourceUri);
}
sb.append(',');
sb.append(symbol.getSourceLine());
sb.append('\n');
int sbLen = sb.length();
if (buf.length < sbLen) {
int bufLen = buf.length;
while (bufLen < sbLen) {
bufLen <<= 1;
}
buf = new char[bufLen];
}
sb.getChars(0, sbLen, buf, 0);
pw.write(buf, 0, sbLen);
sb.setLength(0);
}
}
}