com.facebook.buck.java.InstrumentStep.java Source code

Introduction

Here is the source code for com.facebook.buck.java.InstrumentStep.java

Source

/*
 * Copyright 2012-present Facebook, Inc.
 *
 * 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.facebook.buck.java;

import com.facebook.buck.shell.ShellStep;
import com.facebook.buck.step.ExecutionContext;
import com.google.common.base.Joiner;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;

import java.nio.file.Path;
import java.util.Set;

public class InstrumentStep extends ShellStep {

    private final String mode;
    private final Set<Path> instrumentDirectories;

    public InstrumentStep(String mode, Set<Path> instrumentDirectories) {
        this.mode = mode;
        this.instrumentDirectories = ImmutableSet.copyOf(instrumentDirectories);
    }

    @Override
    public String getShortName() {
        return "emma_instr";
    }

    @Override
    protected ImmutableList<String> getShellCommandInternal(ExecutionContext context) {
        ImmutableList.Builder<String> args = ImmutableList.builder();
        args.add("java");

        // Add EMMA to the class path.
        args.add("-classpath", JUnitStep.PATH_TO_EMMA_JAR.toString());

        args.add("emma", "instr");

        args.add("-outmode", mode);

        // Specify the output path to the EMMA metadata file.
        args.add("-outfile", String.format("%s/coverage.em", JUnitStep.EMMA_OUTPUT_DIR));

        // Create a comma-delimited string of instrumentation directories.
        String pathsToInstrument = Joiner.on(",").join(instrumentDirectories);

        // Specify the set of paths with class files to instrument.
        args.add("-instrpath").add(pathsToInstrument);

        return args.build();
    }
}