private Compiler createCompiler(
List<SourceFile> inputs, List<SourceFile> externs, CompilerOptions compilerOptions) {
Compiler compiler = new Compiler();
compiler.disableThreads();
compiler.compile(externs, inputs, compilerOptions);
return compiler;
}
protected RunResult compile(String js1, String fileName1, String js2, String fileName2) {
Compiler compiler = new Compiler();
CompilerOptions options = getCompilerOptions();
// Turn on IDE mode to get rid of optimizations.
options.ideMode = true;
JSSourceFile[] inputs = {JSSourceFile.fromCode(fileName1, js1)};
if (js2 != null && fileName2 != null) {
JSSourceFile[] multiple = {
JSSourceFile.fromCode(fileName1, js1), JSSourceFile.fromCode(fileName2, js2)
};
inputs = multiple;
}
Result result = compiler.compile(EXTERNS, inputs, options);
assertTrue("compilation failed", result.success);
String source = compiler.toSource();
StringBuilder sb = new StringBuilder();
try {
result.sourceMap.validate(true);
result.sourceMap.appendTo(sb, "testcode");
} catch (IOException e) {
throw new RuntimeException("unexpected exception", e);
}
RunResult rr = new RunResult();
rr.generatedSource = source;
rr.sourceMap = result.sourceMap;
rr.sourceMapFileContent = sb.toString();
return rr;
}
/** core method */
private void writeJsTo(Writer writer) throws IOException {
Compiler compiler;
CompilerOptions options;
List<SourceFile> externals;
List<SourceFile> sources;
Result result;
boolean first;
int i;
Node node;
compiler = new Compiler(new LoggerErrorManager());
options = new CompilerOptions();
options.setOutputCharset(Engine.ENCODING);
sources = new ArrayList<>();
externals = new ArrayList<>();
for (i = 0; i < nodes.size(); i++) {
node = nodes.get(i);
sources.add(
SourceFile.fromCode(
location(node) + /* to get unique names, which is checked by the compiler: */ "_" + i,
readString(node)));
}
result = compiler.compile(externals, sources, options);
if (!result.success) {
if (result.errors.length < 1) {
throw new IllegalStateException();
}
throw new IOException(
result.errors[0].sourceName
+ ":"
+ result.errors[0].lineNumber
+ ":"
+ result.errors[0].description);
}
if (overallMinimize) {
writer.write(compiler.toSource());
} else {
first = true;
for (SourceFile source : sources) {
if (first) {
first = false;
} else {
writer.write(LF);
}
if (!overallMinimize) {
writer.write(type.comment(source.getName()));
}
writer.write(source.getCode());
}
}
}
/**
* For now, this method is private so that the client does not get access to the Compiler that was
* used.
*/
private void compile(Config config, Compiler compiler, PlovrCompilerOptions options) {
Preconditions.checkState(!hasResult(), "Compilation already occurred");
this.compiler = compiler;
for (SourceFile input : inputs) {
String path = input.getOriginalPath();
try {
File file = new File(config.getConfigFile().getParentFile(), path);
if (file.exists()) {
fam.watch(file);
}
} catch (Exception e) {
e.printStackTrace();
}
}
if (modules == null) {
this.result = compiler.compile(externs, inputs, options);
} else {
this.result = compiler.compileModules(externs, modules, options);
}
if (config.getTreatWarningsAsErrors() && result.warnings.length > 0) {
// Combine the errors and warnings into a single array.
Result originalResult = this.result;
JSError[] errors = new JSError[originalResult.errors.length + originalResult.warnings.length];
System.arraycopy(originalResult.errors, 0, errors, 0, originalResult.errors.length);
System.arraycopy(
originalResult.warnings,
0,
errors,
originalResult.errors.length,
originalResult.warnings.length);
this.result =
new Result(
errors,
new JSError[0], /* warnings */
originalResult.debugLog,
originalResult.variableMap,
originalResult.propertyMap,
originalResult.namedAnonFunctionMap,
originalResult.stringMap,
originalResult.functionInformationMap,
originalResult.sourceMap,
originalResult.externExport,
originalResult.cssNames,
originalResult.idGeneratorMap);
}
}
private String compile(HtmlLibrary library, ClosureOptimizationLevel opt, InputStream js)
throws IOException {
CompilationLevel compilationLevel = opt.toCompilationLevel();
if (null == compilationLevel) {
// return original input
return IOUtils.toString(js);
}
SourceFile input = SourceFile.fromInputStream(getLibraryName(library), js);
// TODO externs not supported, should avoid ADVANCED compilation
SourceFile extern = SourceFile.fromCode("TODO", StringUtils.EMPTY);
CompilerOptions options = new CompilerOptions();
compilationLevel.setOptionsForCompilationLevel(options);
// ES5 assumption to allow getters/setters
options.setLanguageIn(CompilerOptions.LanguageMode.ECMASCRIPT5);
Compiler compiler = new Compiler();
compiler.compile(extern, input, options);
return compiler.toSource();
}
/** @throws ExecutionException */
public void run() throws ExecutionException {
final Compiler compiler = new Compiler();
final CompilerOptions options = new CompilerOptions();
closureOptimization.setOptionsForCompilationLevel(options);
final List<JSSourceFile> externs = Collections.emptyList();
final List<JSSourceFile> sources = new ArrayList<JSSourceFile>();
if (closurePreScript != null) {
getLogger().info("Include PreScript:");
sources.add(JSSourceFile.fromCode("closurePreScript.js", closurePreScript));
}
getFiles(sources);
if (closurePostScript != null) {
getLogger().info("Include PostScript:");
sources.add(JSSourceFile.fromCode("closurePostScript.js", closurePostScript));
}
getLogger().info("Got " + sources.size() + " source files");
final Result result = compiler.compile(externs, sources, options);
if (!result.success) {
throw new ExecutionException("Failed to compile scripts");
}
getLogger().info("Writing compiled js to " + closureTargetFile);
try {
FileUtils.forceMkdir(closureTargetFile.getParentFile());
final FileWriter writer = new FileWriter(closureTargetFile);
try {
String preSource =
closurePreScriptFile != null ? FileUtils.readFileToString(closurePreScriptFile) : "";
String postSource =
closurePostScriptFile != null ? FileUtils.readFileToString(closurePostScriptFile) : "";
StringBuilder sb = new StringBuilder();
sb.append(preSource).append(compiler.toSource()).append(postSource);
writer.write(sb.toString());
} finally {
writer.close();
}
} catch (IOException e) {
throw new ExecutionException("Failed to write target file: " + closureTargetFile, e);
}
}
public void execute() {
if (this.outputFile == null) {
throw new BuildException("outputFile attribute must be set");
}
Compiler.setLoggingLevel(Level.OFF);
CompilerOptions options = createCompilerOptions();
Compiler compiler = createCompiler(options);
JSSourceFile[] externs = findExternFiles();
JSSourceFile[] sources = findSourceFiles();
log("Compiling " + sources.length + " file(s) with " + externs.length + " extern(s)");
Result result = compiler.compile(externs, sources, options);
if (result.success) {
writeResult(compiler.toSource());
} else {
throw new BuildException("Compilation failed.");
}
}
/**
* Minimize the output using google closure compiler.
*
* @param output The input file to minimize.
* @throws IOException If something goes wrong.
* @throws MojoFailureException If something goes wrong.
*/
private void minimize(final File output) throws IOException, MojoFailureException {
final CompilerOptions options = new CompilerOptions();
options.setCodingConvention(new ClosureCodingConvention());
options.setOutputCharset("UTF-8");
options.setWarningLevel(DiagnosticGroups.CHECK_VARIABLES, CheckLevel.WARNING);
CompilationLevel.SIMPLE_OPTIMIZATIONS.setOptionsForCompilationLevel(options);
Compiler.setLoggingLevel(Level.SEVERE);
Compiler compiler = new Compiler();
compiler.disableThreads();
compiler.initOptions(options);
Result result =
compiler.compile(
Collections.<SourceFile>emptyList(),
Arrays.asList(SourceFile.fromFile(output)),
options);
if (result.success) {
FileUtils.fileWrite(output, compiler.toSource());
} else {
JSError[] errors = result.errors;
throw new MojoFailureException(errors[0].toString());
}
}
@Override
public void execute() {
if (this.outputFile == null) {
throw new BuildException("outputFile attribute must be set");
}
Compiler.setLoggingLevel(Level.OFF);
CompilerOptions options = createCompilerOptions();
Compiler compiler = createCompiler(options);
List<SourceFile> externs = findExternFiles();
List<SourceFile> sources = findSourceFiles();
if (isStale() || forceRecompile) {
log("Compiling " + sources.size() + " file(s) with " + externs.size() + " extern(s)");
Result result = compiler.compile(externs, sources, options);
if (result.success) {
StringBuilder source = new StringBuilder(compiler.toSource());
if (this.outputWrapperFile != null) {
try {
this.outputWrapper = Files.toString(this.outputWrapperFile, UTF_8);
} catch (Exception e) {
throw new BuildException("Invalid output_wrapper_file specified.");
}
}
if (this.outputWrapper != null) {
int pos = -1;
pos = this.outputWrapper.indexOf(CommandLineRunner.OUTPUT_MARKER);
if (pos > -1) {
String prefix = this.outputWrapper.substring(0, pos);
source.insert(0, prefix);
// end of outputWrapper
int suffixStart = pos + CommandLineRunner.OUTPUT_MARKER.length();
String suffix = this.outputWrapper.substring(suffixStart);
source.append(suffix);
} else {
throw new BuildException(
"Invalid output_wrapper specified. "
+ "Missing '"
+ CommandLineRunner.OUTPUT_MARKER
+ "'.");
}
}
if (result.sourceMap != null) {
flushSourceMap(result.sourceMap);
source.append(System.getProperty("line.separator"));
source.append("//@ sourceMappingURL=" + sourceMapOutputFile.getName());
}
writeResult(source.toString());
} else {
throw new BuildException("Compilation failed.");
}
} else {
log("None of the files changed. Compilation skipped.");
}
}