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/*
* Copyright 2008 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.dev;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.core.ext.linker.ArtifactSet;
import com.google.gwt.dev.CompileTaskRunner.CompileTask;
import com.google.gwt.dev.cfg.ModuleDef;
import com.google.gwt.dev.cfg.ModuleDefLoader;
import com.google.gwt.dev.javac.UnitCache;
import com.google.gwt.dev.javac.UnitCacheSingleton;
import com.google.gwt.dev.jjs.PermutationResult;
import com.google.gwt.dev.js.JsNamespaceOption;
import com.google.gwt.dev.util.Memory;
import com.google.gwt.dev.util.PersistenceBackedObject;
import com.google.gwt.dev.util.Util;
import com.google.gwt.dev.util.arg.ArgHandlerDeployDir;
import com.google.gwt.dev.util.arg.ArgHandlerExtraDir;
import com.google.gwt.dev.util.arg.ArgHandlerIncrementalCompile;
import com.google.gwt.dev.util.arg.ArgHandlerLocalWorkers;
import com.google.gwt.dev.util.arg.ArgHandlerSaveSourceOutput;
import com.google.gwt.dev.util.arg.ArgHandlerWarDir;
import com.google.gwt.dev.util.arg.ArgHandlerWorkDirOptional;
import com.google.gwt.dev.util.arg.OptionOptimize;
import com.google.gwt.dev.util.log.speedtracer.CompilerEventType;
import com.google.gwt.dev.util.log.speedtracer.SpeedTracerLogger;
import com.google.gwt.dev.util.log.speedtracer.SpeedTracerLogger.Event;
import com.google.gwt.thirdparty.guava.common.collect.Sets;
import com.google.gwt.util.tools.Utility;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
/**
* The main executable entry point for the GWT Java to JavaScript compiler.
*/
public class Compiler {
static class ArgProcessor extends PrecompileTaskArgProcessor {
public ArgProcessor(CompilerOptions options) {
super(options);
registerHandler(new ArgHandlerLocalWorkers(options));
// Override the ArgHandlerWorkDirRequired in the super class.
registerHandler(new ArgHandlerWorkDirOptional(options));
registerHandler(new ArgHandlerIncrementalCompile(options));
registerHandler(new ArgHandlerWarDir(options));
registerHandler(new ArgHandlerDeployDir(options));
registerHandler(new ArgHandlerExtraDir(options));
registerHandler(new ArgHandlerSaveSourceOutput(options));
}
@Override
protected String getName() {
return Compiler.class.getName();
}
}
/**
* Locates the unit cache dir relative to the war dir and returns a UnitCache instance.
*/
public static UnitCache getOrCreateUnitCache(TreeLogger logger, CompilerOptions options) {
File persistentUnitCacheDir = null;
if (options.getWarDir() != null && options.getWarDir().isDirectory()) {
persistentUnitCacheDir = new File(options.getWarDir(), "../");
}
// TODO: returns the same UnitCache even if the passed directory changes. Make this less
// surprising.
return UnitCacheSingleton.get(logger, null, persistentUnitCacheDir, options);
}
public static void main(String[] args) {
Memory.initialize();
if (System.getProperty("gwt.jjs.dumpAst") != null) {
System.out.println("Will dump AST to: "
+ System.getProperty("gwt.jjs.dumpAst"));
}
SpeedTracerLogger.init();
/*
* NOTE: main always exits with a call to System.exit to terminate any
* non-daemon threads that were started in Generators. Typically, this is to
* shutdown AWT related threads, since the contract for their termination is
* still implementation-dependent.
*/
final CompilerOptions options = new CompilerOptionsImpl();
if (new ArgProcessor(options).processArgs(args)) {
CompileTask task = new CompileTask() {
@Override
public boolean run(TreeLogger logger) throws UnableToCompleteException {
return Compiler.compile(logger, options);
}
};
if (CompileTaskRunner.runWithAppropriateLogger(options, task)) {
// Exit w/ success code.
System.exit(0);
}
}
// Exit w/ non-success code.
System.exit(1);
}
public static boolean compile(
TreeLogger logger, CompilerOptions compilerOptions)
throws UnableToCompleteException {
List<ModuleDef> moduleDefs = new ArrayList<>();
for (String moduleName : compilerOptions.getModuleNames()) {
moduleDefs.add(ModuleDefLoader.loadFromClassPath(logger, moduleName, true));
}
boolean result = true;
for (ModuleDef moduleDef : moduleDefs) {
result &= compile(logger, compilerOptions, moduleDef);
}
return result;
}
public static boolean compile(
TreeLogger logger, CompilerOptions compilerOptions, ModuleDef moduleDef)
throws UnableToCompleteException {
MinimalRebuildCache minimalRebuildCache = compilerOptions.isIncrementalCompileEnabled()
? new MinimalRebuildCache()
: new NullRebuildCache();
return compile(logger, compilerOptions, minimalRebuildCache, moduleDef);
}
public static boolean compile(
TreeLogger logger,
CompilerOptions compilerOptions,
MinimalRebuildCache minimalRebuildCache,
ModuleDef moduleDef)
throws UnableToCompleteException {
CompilerOptionsImpl options = new CompilerOptionsImpl(compilerOptions);
boolean tempWorkDir = false;
try {
if (options.getWorkDir() == null) {
options.setWorkDir(Utility.makeTemporaryDirectory(null, "gwtc"));
tempWorkDir = true;
}
if ((options.isSoycEnabled() || options.isJsonSoycEnabled())
&& options.getExtraDir() == null) {
options.setExtraDir(new File("extras"));
}
if (options.isIncrementalCompileEnabled()) {
// Disable options that disrupt contiguous output JS source per class.
options.setClusterSimilarFunctions(false);
options.setOptimizationLevel(OptionOptimize.OPTIMIZE_LEVEL_DRAFT);
options.setRunAsyncEnabled(false);
// Disable options that disrupt reference consistency across multiple compiles.
// TODO(stalcup): preserve Namespace state in MinimalRebuildCache across compiles.
options.setNamespace(JsNamespaceOption.NONE);
}
CompilerContext compilerContext =
new CompilerContext.Builder()
.options(options)
.minimalRebuildCache(minimalRebuildCache)
.unitCache(getOrCreateUnitCache(logger, options))
.module(moduleDef)
.build();
String moduleName = moduleDef.getCanonicalName();
if (options.isValidateOnly()) {
if (!Precompile.validate(logger, compilerContext)) {
return false;
}
} else {
long beforeCompileMs = System.currentTimeMillis();
TreeLogger branch = logger.branch(TreeLogger.INFO,
"Compiling module " + moduleName);
Precompilation precompilation = Precompile.precompile(branch, compilerContext);
if (precompilation == null) {
return false;
}
// TODO: move to precompile() after params are refactored
if (!options.shouldSaveSource()) {
precompilation.removeSourceArtifacts(branch);
}
Event compilePermutationsEvent =
SpeedTracerLogger.start(CompilerEventType.COMPILE_PERMUTATIONS);
Permutation[] allPerms = precompilation.getPermutations();
List<PersistenceBackedObject<PermutationResult>> resultFiles =
CompilePerms.makeResultFiles(
options.getCompilerWorkDir(moduleName), allPerms, options);
CompilePerms.compile(branch, compilerContext, precompilation, allPerms,
options.getLocalWorkers(), resultFiles);
compilePermutationsEvent.end();
ArtifactSet generatedArtifacts = precompilation.getGeneratedArtifacts();
PrecompileTaskOptions precompileOptions = precompilation.getUnifiedAst().getOptions();
precompilation = null; // No longer needed, so save the memory
long afterCompileMs = System.currentTimeMillis();
double compileSeconds = (afterCompileMs - beforeCompileMs) / 1000d;
branch.log(TreeLogger.INFO,
String.format("Compilation succeeded -- %.3fs", compileSeconds));
long beforeLinkMs = System.currentTimeMillis();
Event linkEvent = SpeedTracerLogger.start(CompilerEventType.LINK);
File absPath = new File(options.getWarDir(), moduleDef.getName());
absPath = absPath.getAbsoluteFile();
String logMessage = "Linking into " + absPath;
if (options.getExtraDir() != null) {
File absExtrasPath = new File(options.getExtraDir(),
moduleDef.getName());
absExtrasPath = absExtrasPath.getAbsoluteFile();
logMessage += "; Writing extras to " + absExtrasPath;
}
Link.link(logger.branch(TreeLogger.TRACE, logMessage), moduleDef,
moduleDef.getPublicResourceOracle(), generatedArtifacts, allPerms, resultFiles,
Sets.<PermutationResult>newHashSet(), precompileOptions, options);
linkEvent.end();
long afterLinkMs = System.currentTimeMillis();
double linkSeconds = (afterLinkMs - beforeLinkMs) / 1000d;
branch.log(TreeLogger.INFO, String.format("Linking succeeded -- %.3fs", linkSeconds));
}
} catch (IOException e) {
logger.log(TreeLogger.ERROR, "Unable to create compiler work directory",
e);
return false;
} finally {
if (tempWorkDir) {
Util.recursiveDelete(options.getWorkDir(), false);
}
}
return true;
}
}