LintPassConfig.java

/*
 * Copyright 2015 The Closure Compiler Authors.
 *
 * 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.javascript.jscomp;

import com.google.common.collect.ImmutableList;
import com.google.javascript.jscomp.NodeTraversal.Callback;
import com.google.javascript.jscomp.lint.CheckDuplicateCase;
import com.google.javascript.jscomp.lint.CheckEmptyStatements;
import com.google.javascript.jscomp.lint.CheckEnums;
import com.google.javascript.jscomp.lint.CheckInterfaces;
import com.google.javascript.jscomp.lint.CheckJSDocStyle;
import com.google.javascript.jscomp.lint.CheckMissingSemicolon;
import com.google.javascript.jscomp.lint.CheckPrimitiveAsObject;
import com.google.javascript.jscomp.lint.CheckPrototypeProperties;
import com.google.javascript.jscomp.lint.CheckRequiresAndProvidesSorted;
import com.google.javascript.jscomp.lint.CheckUnusedLabels;
import com.google.javascript.jscomp.lint.CheckUselessBlocks;
import java.util.List;

/**
 * A PassConfig for the standalone linter, which runs on a single file at a time. This runs a
 * similar set of checks to what you would get when running the compiler with the lintChecks
 * DiagnosticGroup enabled, but some of the lint checks depend on type information, which is not
 * available when looking at a single file, so those are omitted here.
 */
class LintPassConfig extends PassConfig.PassConfigDelegate {
  LintPassConfig(CompilerOptions options) {
    super(new DefaultPassConfig(options));
  }

  @Override protected List<PassFactory> getChecks() {
    return ImmutableList.of(
        earlyLintChecks, variableReferenceCheck, closureRewriteClass, lateLintChecks);
  }

  @Override protected List<PassFactory> getOptimizations() {
    return ImmutableList.of();
  }

  private final PassFactory earlyLintChecks =
      new PassFactory("earlyLintChecks", true) {
        @Override
        protected CompilerPass create(AbstractCompiler compiler) {
          return new CombinedCompilerPass(
              compiler,
              ImmutableList.<Callback>of(
                  new CheckDuplicateCase(compiler),
                  new CheckEmptyStatements(compiler),
                  new CheckEnums(compiler),
                  new CheckJSDocStyle(compiler),
                  new CheckJSDoc(compiler),
                  new CheckMissingSemicolon(compiler),
                  new CheckMissingSuper(compiler),
                  new CheckPrimitiveAsObject(compiler),
                  new CheckRequiresAndProvidesSorted(compiler),
                  new CheckRequiresForConstructors(
                      compiler, CheckRequiresForConstructors.Mode.SINGLE_FILE),
                  new CheckSideEffects(
                      compiler, /* report */ true, /* protectSideEffectFreeCode */ false),
                  new CheckUnusedLabels(compiler),
                  new CheckUselessBlocks(compiler),
                  new ClosureCheckModule(compiler),
                  new Es6SuperCheck(compiler)));
        }
      };

  private final PassFactory variableReferenceCheck =
      new PassFactory("variableReferenceCheck", true) {
        @Override
        protected CompilerPass create(AbstractCompiler compiler) {
          return new VariableReferenceCheck(compiler);
        }
      };

  private final PassFactory closureRewriteClass =
      new PassFactory("closureRewriteClass", true) {
        @Override
        protected HotSwapCompilerPass create(AbstractCompiler compiler) {
          return new ClosureRewriteClass(compiler);
        }
      };

  private final PassFactory lateLintChecks =
      new PassFactory("lateLintChecks", true) {
        @Override
        protected CompilerPass create(AbstractCompiler compiler) {
          return new CombinedCompilerPass(
              compiler,
              ImmutableList.<Callback>of(
                  new CheckInterfaces(compiler),
                  new CheckPrototypeProperties(compiler)));
        }
      };
}