package com.google.caja.tools;
import com.google.javascript.jscomp.CheckLevel;
import com.google.javascript.jscomp.CommandLineRunner;
import com.google.javascript.jscomp.CompilationLevel;
import com.google.javascript.jscomp.CompilerOptions;
import com.google.javascript.jscomp.Compiler;
import com.google.javascript.jscomp.DiagnosticGroup;
import com.google.javascript.jscomp.DiagnosticGroups;
import com.google.javascript.jscomp.GoogleCodingConvention;
import com.google.javascript.jscomp.MessageFormatter;
import com.google.javascript.jscomp.Result;
import com.google.javascript.jscomp.SourceFile;
import com.google.javascript.jscomp.WarningLevel;
import com.google.javascript.jscomp.ant.AntErrorManager;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Task;
public class ClosureCompiler {
/*
trunk=http://closure-compiler.googlecode.com/svn/trunk
curl $trunk/src/com/google/javascript/jscomp/DiagnosticGroups.java |
perl -ne 'm(public static DiagnosticGroup (\w+) =) &&
print qq(DiagnosticGroups.$1,\n)' | sort
*/
private static DiagnosticGroup diagnosticGroups[] = {
DiagnosticGroups.ACCESS_CONTROLS,
DiagnosticGroups.AMBIGUOUS_FUNCTION_DECL,
DiagnosticGroups.CHECK_PROVIDES,
DiagnosticGroups.CHECK_REGEXP,
DiagnosticGroups.CHECK_TYPES,
DiagnosticGroups.CHECK_USELESS_CODE,
DiagnosticGroups.CHECK_VARIABLES,
DiagnosticGroups.CONST,
DiagnosticGroups.CONSTANT_PROPERTY,
DiagnosticGroups.DEBUGGER_STATEMENT_PRESENT,
DiagnosticGroups.DEPRECATED,
DiagnosticGroups.DUPLICATE_MESSAGE,
DiagnosticGroups.DUPLICATE_VARS,
DiagnosticGroups.ES5_STRICT,
DiagnosticGroups.EXTERNS_VALIDATION,
DiagnosticGroups.FILEOVERVIEW_JSDOC,
DiagnosticGroups.GLOBAL_THIS,
DiagnosticGroups.INTERNET_EXPLORER_CHECKS,
DiagnosticGroups.INVALID_CASTS,
DiagnosticGroups.MISSING_PROPERTIES,
DiagnosticGroups.NON_STANDARD_JSDOC,
DiagnosticGroups.STRICT_MODULE_DEP_CHECK,
DiagnosticGroups.TWEAKS,
DiagnosticGroups.TYPE_INVALIDATION,
DiagnosticGroups.UNDEFINED_NAMES,
DiagnosticGroups.UNDEFINED_VARIABLES,
DiagnosticGroups.UNKNOWN_DEFINES,
DiagnosticGroups.VISIBILITY,
};
public String build(Task task, List<File> inputs, PrintWriter logger) {
List<SourceFile> externs;
try {
externs = CommandLineRunner.getDefaultExterns();
} catch (IOException e) {
throw new BuildException(e);
}
List<SourceFile> jsInputs = new ArrayList<SourceFile>();
for (File f : inputs) {
jsInputs.add(SourceFile.fromFile(f));
}
CompilerOptions options = new CompilerOptions();
CompilationLevel.ADVANCED_OPTIMIZATIONS
.setOptionsForCompilationLevel(options);
WarningLevel.VERBOSE.setOptionsForWarningLevel(options);
for (DiagnosticGroup dg : diagnosticGroups) {
options.setWarningLevel(dg, CheckLevel.ERROR);
}
options.setCodingConvention(new GoogleCodingConvention());
Compiler compiler = new Compiler();
MessageFormatter formatter =
options.errorFormat.toFormatter(compiler, false);
AntErrorManager errorManager = new AntErrorManager(formatter, task);
compiler.setErrorManager(errorManager);
Result r = compiler.compile(externs, jsInputs, options);
if (!r.success) {
return null;
}
String wrapped = "(function(){" + compiler.toSource() + "})();\n";
return wrapped;
}
}