@Override
void apply(CompilerOptions options, boolean value) {
options.setLanguageIn(
value
? CompilerOptions.LanguageMode.ECMASCRIPT6
: CompilerOptions.LanguageMode.ECMASCRIPT5);
}
private CompilerOptions createCompilerOptions() {
CompilerOptions options = new CompilerOptions();
this.compilationLevel.setOptionsForCompilationLevel(options);
if (this.debugOptions) {
this.compilationLevel.setDebugOptionsForCompilationLevel(options);
}
options.prettyPrint = this.prettyPrint;
options.printInputDelimiter = this.printInputDelimiter;
options.generateExports = this.generateExports;
options.setLanguageIn(this.languageIn);
options.setOutputCharset(this.outputEncoding);
this.warningLevel.setOptionsForWarningLevel(options);
options.setManageClosureDependencies(manageDependencies);
convertEntryPointParameters(options);
options.setTrustedStrings(true);
if (replaceProperties) {
convertPropertiesMap(options);
}
convertDefineParameters(options);
for (Warning warning : warnings) {
CheckLevel level = warning.getLevel();
String groupName = warning.getGroup();
DiagnosticGroup group = new DiagnosticGroups().forName(groupName);
if (group == null) {
throw new BuildException("Unrecognized 'warning' option value (" + groupName + ")");
}
options.setWarningLevel(group, level);
}
if (!Strings.isNullOrEmpty(sourceMapFormat)) {
options.sourceMapFormat = Format.valueOf(sourceMapFormat);
}
if (sourceMapOutputFile != null) {
File parentFile = sourceMapOutputFile.getParentFile();
if (parentFile.mkdirs()) {
log("Created missing parent directory " + parentFile, Project.MSG_DEBUG);
}
options.sourceMapOutputPath = parentFile.getAbsolutePath();
}
return options;
}
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();
}