protected CompilerOptions getCompilerOptions() {
CompilerOptions options = new CompilerOptions();
options.sourceMapOutputPath = "testcode_source_map.out";
options.sourceMapFormat = getSourceMapFormat();
options.sourceMapDetailLevel = detailLevel;
return options;
}
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;
}
@Override
void apply(CompilerOptions options, boolean value) {
if (value) {
options.setSyntheticBlockStartMarker("start");
options.setSyntheticBlockEndMarker("end");
} else {
options.setSyntheticBlockStartMarker(null);
options.setSyntheticBlockEndMarker(null);
}
}
private CompilerOptions createCompilerOptions() {
CompilerOptions options = new CompilerOptions();
if (this.debugOptions) {
this.compilationLevel.setDebugOptionsForCompilationLevel(options);
} else {
this.compilationLevel.setOptionsForCompilationLevel(options);
}
this.warningLevel.setOptionsForWarningLevel(options);
options.setManageClosureDependencies(manageDependencies);
return options;
}
/** 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());
}
}
}
@Override
void apply(CompilerOptions options, boolean value) {
options.setLanguageOut(
value
? CompilerOptions.LanguageMode.ECMASCRIPT5
: CompilerOptions.LanguageMode.NO_TRANSPILE);
}
@Override
void apply(CompilerOptions options, boolean value) {
options.setLanguageIn(
value
? CompilerOptions.LanguageMode.ECMASCRIPT6
: CompilerOptions.LanguageMode.ECMASCRIPT5);
}
@Override
void apply(CompilerOptions options, boolean value) {
if (value) {
for (String groupName : new DiagnosticGroups().getRegisteredGroups().keySet()) {
options.setWarningLevel(groupName, CheckLevel.WARNING);
}
}
}
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();
}
public void handle(CompilerOptions compilerOptions) {
compilerOptions.setCheckEventfulObjectDisposalPolicy(AGGRESSIVE);
compilerOptions.assumeStrictThis();
compilerOptions.setCheckMissingReturn(CheckLevel.ERROR);
compilerOptions.setAggressiveVarCheck(CheckLevel.ERROR);
compilerOptions.setCheckDeterminism(true);
compilerOptions.setBrokenClosureRequiresLevel(CheckLevel.ERROR);
compilerOptions.setCheckTypes(true);
compilerOptions.setInferConst(true);
CompilationLevel.ADVANCED_OPTIMIZATIONS.setOptionsForCompilationLevel(compilerOptions);
CompilationLevel.ADVANCED_OPTIMIZATIONS.setTypeBasedOptimizationOptions(compilerOptions);
}
/** Converts {@code <entrypoint/>} nested elements into Compiler entrypoint replacements. */
private void convertEntryPointParameters(CompilerOptions options) {
List<String> entryPoints = Lists.newLinkedList();
for (Parameter p : entryPointParams) {
String key = p.getName();
entryPoints.add(key);
}
if (this.manageDependencies) {
options.setManageClosureDependencies(entryPoints);
}
}
/**
* Maps Ant-style values (e.g., from Properties) into expected Closure {@code @define} literals
*
* @return True if the {@code @define} replacement succeeded, false if the variable's value could
* not be mapped properly.
*/
private boolean setDefine(CompilerOptions options, String key, Object value) {
boolean success = false;
if (value instanceof String) {
final boolean isTrue = "true".equals(value);
final boolean isFalse = "false".equals(value);
if (isTrue || isFalse) {
options.setDefineToBooleanLiteral(key, isTrue);
} else {
try {
double dblTemp = Double.parseDouble((String) value);
options.setDefineToDoubleLiteral(key, dblTemp);
} catch (NumberFormatException nfe) {
// Not a number, assume string
options.setDefineToStringLiteral(key, (String) value);
}
}
success = true;
} else if (value instanceof Boolean) {
options.setDefineToBooleanLiteral(key, (Boolean) value);
success = true;
} else if (value instanceof Integer) {
options.setDefineToNumberLiteral(key, (Integer) value);
success = true;
} else if (value instanceof Double) {
options.setDefineToDoubleLiteral(key, (Double) value);
success = true;
}
return success;
}
@VisibleForTesting
static CompilerOptions getCompilerOptions() {
CompilerOptions options = new CompilerOptions();
DependencyOptions deps = new DependencyOptions();
deps.setDependencySorting(true);
options.setDependencyOptions(deps);
options.setIdeMode(true);
options.setCheckSuspiciousCode(true);
options.setCheckSymbols(true);
options.setCheckTypes(true);
options.setClosurePass(true);
options.setPreserveGoogRequires(true);
options.setWarningLevel(DiagnosticGroups.MISSING_REQUIRE, CheckLevel.ERROR);
return options;
}
/**
* Add all the check pass that are possibly relevant to a non googler.
*
* @param options The CompilerOptions object to set the options on.
*/
private static void addVerboseWarnings(CompilerOptions options) {
addDefaultWarnings(options);
// checkSuspiciousCode needs to be enabled for CheckGlobalThis to get run.
options.checkSuspiciousCode = true;
options.checkGlobalThisLevel = CheckLevel.WARNING;
options.checkSymbols = true;
options.checkMissingReturn = CheckLevel.WARNING;
// checkTypes has the side-effect of asserting that the
// correct number of arguments are passed to a function.
// Because the CodingConvention used with the web service does not provide a
// way for optional arguments to be specified, these warnings may result in
// false positives.
options.checkTypes = true;
options.checkGlobalNamesLevel = CheckLevel.WARNING;
options.aggressiveVarCheck = CheckLevel.WARNING;
options.setWarningLevel(DiagnosticGroups.MISSING_PROPERTIES, CheckLevel.WARNING);
options.setWarningLevel(DiagnosticGroups.DEPRECATED, CheckLevel.WARNING);
}
/**
* 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());
}
}
@VisibleForTesting
static CompilerOptions createOptions(
FileSystem fileSystem, TypeRegistry typeRegistry, DossierCompiler compiler) {
CompilerOptions options = new CompilerOptions();
options.setCodingConvention(new ClosureCodingConvention());
CompilationLevel.ADVANCED_OPTIMIZATIONS.setOptionsForCompilationLevel(options);
CompilationLevel.ADVANCED_OPTIMIZATIONS.setTypeBasedOptimizationOptions(options);
// IDE mode must be enabled or all of the jsdoc info will be stripped from the AST.
options.setIdeMode(true);
// For easier debugging.
options.setPrettyPrint(true);
ProvidedSymbolsCollectionPass providedNamespacesPass =
new ProvidedSymbolsCollectionPass(compiler, typeRegistry, fileSystem);
options.addCustomPass(CustomPassExecutionTime.BEFORE_CHECKS, providedNamespacesPass);
options.addCustomPass(
CustomPassExecutionTime.BEFORE_OPTIMIZATIONS,
new DocPass(compiler, typeRegistry, fileSystem));
return options;
}
@Override
void apply(CompilerOptions options, boolean value) {
options.setPolymerPass(value);
}
@Override
void apply(CompilerOptions options, boolean value) {
options.setMoveFunctionDeclarations(value);
}
@Override
void apply(CompilerOptions options, boolean value) {
options.setGenerateExports(value);
}
@Override
void apply(CompilerOptions options, boolean value) {
options.setCheckSymbols(value);
}
@Override
void apply(CompilerOptions options, boolean value) {
if (value) {
options.setWarningLevel(DiagnosticGroups.LINT_CHECKS, CheckLevel.WARNING);
}
}
@Override
void apply(CompilerOptions options, boolean value) {
options.setSkipNonTranspilationPasses(value);
}
@Override
void apply(CompilerOptions options, boolean value) {
options.setPrettyPrint(value);
}
@Override
void apply(CompilerOptions options, boolean value) {
options.setClosurePass(value);
}
@Override
void apply(CompilerOptions options, boolean value) {
options.setOptimizeParameters(value);
}
@Override
void apply(CompilerOptions options, boolean value) {
options.setCrossModuleMethodMotion(value);
}
@Override
void apply(CompilerOptions options, boolean value) {
options.setExportLocalPropertyDefinitions(value);
}
@Override
void apply(CompilerOptions options, boolean value) {
options.setMarkNoSideEffectCalls(value);
}
@Override
void apply(CompilerOptions options, boolean value) {
options.setPreserveTypeAnnotations(value);
}
@Override
void apply(CompilerOptions options, boolean value) {
options.setOptimizeReturns(value);
}