Example usage for com.google.common.base Preconditions checkState

Introduction

In this page you can find the example usage for com.google.common.base Preconditions checkState.

Prototype

public static void checkState(boolean expression, @Nullable String errorMessageTemplate,
        @Nullable Object... errorMessageArgs)

Source Link

Document

Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.

Usage

From source file:com.facebook.buck.distributed.DistBuildSlaveTimingStatsTracker.java

public long getElapsedTimeMs(SlaveEvents event) {
    Stopwatch watch = Preconditions.checkNotNull(watches.get(event));
    Preconditions.checkState(!watch.isRunning(), "Stopwatch for %s is still running.", event);
    return watch.elapsed(TimeUnit.MILLISECONDS);
}

From source file:com.facebook.buck.java.abi.StubJar.java

public void writeTo(ProjectFilesystem filesystem, Path path) throws IOException {
    Preconditions.checkState(!filesystem.exists(path), "Output file already exists: %s)", path);

    if (path.getParent() != null && !filesystem.exists(path.getParent())) {
        filesystem.createParentDirs(path);
    }//w w  w. j  ava2  s .c  om

    Walker walker = Walkers.getWalkerFor(toMirror);
    try (OutputStream fos = filesystem.newFileOutputStream(path);
            JarOutputStream jar = new JarOutputStream(fos)) {
        walker.walk(new FileAction() {
            @Override
            public void visit(Path relativizedPath, InputStream stream) throws IOException {
                String fileName = relativizedPath.toString();
                if (!fileName.endsWith(".class")) {
                    return;
                }

                ClassReader classReader = new ClassReader(stream);
                ClassMirror visitor = new ClassMirror(fileName);
                classReader.accept(visitor, SKIP_CODE | SKIP_DEBUG | SKIP_FRAMES);
                visitor.writeTo(jar);
            }
        });
    }
}

From source file:com.facebook.util.Validator.java

public void checkState(boolean expression, String message, Object... errorMessageArgs) throws T {
    try {/*  ww w. j a  v a  2s.  co m*/
        Preconditions.checkState(expression, message, errorMessageArgs);
    } catch (Exception e) {
        throw ExceptionUtils.wrap(e, clazz);
    }
}

From source file:com.google.javascript.jscomp.DefaultExterns.java

/**
 * Filters and orders the passed externs for the specified environment.
 *
 * @param env The environment being used.
 * @param externs Flat tilename to source externs map. Must be mutable and will be modified.
 * @return Ordered list of externs./*from  ww w .  j  a v  a  2  s  .co m*/
 */
public static List<SourceFile> prepareExterns(CompilerOptions.Environment env,
        Map<String, SourceFile> externs) {
    List<SourceFile> out = new ArrayList<>();

    for (String key : BUILTIN_LANG_EXTERNS) {
        Preconditions.checkState(externs.containsKey(key), "Externs must contain builtin: %s", key);
        out.add(externs.remove(key));
    }

    if (env == CompilerOptions.Environment.BROWSER) {
        for (String key : BROWSER_EXTERN_DEP_ORDER) {
            Preconditions.checkState(externs.containsKey(key), "Externs must contain builtin for env %s: %s",
                    env, key);
            out.add(externs.remove(key));
        }

        out.addAll(externs.values());
    }

    return out;
}

From source file:com.facebook.swift.generator.TypedefRegistry.java

public void add(final SwiftJavaType type, final ThriftType thriftType) {
    Preconditions.checkState(!registry.containsKey(type.getKey()), "The type %s was already registered!", type);
    add(type.getKey(), thriftType);/*from w  ww  . j  av  a 2 s. c  o  m*/
}

From source file:de.cosmocode.rendering.DefaultListRenderer.java

@Override
public List<Object> build() throws RenderingException {
    final Object list = super.build();
    Preconditions.checkState(list instanceof List<?>, "Expected list, but was %s", list);
    return cast(list);
}

From source file:com.android.build.gradle.internal.tasks.BaseTask.java

/**
 * Returns the androidBuilder./*  w  w  w .  jav  a 2 s  .c o  m*/
 * @throws IllegalStateException if androidBuilder has not been set,
 */
@NonNull
protected AndroidBuilder getBuilder() {
    Preconditions.checkState(androidBuilder != null, "androidBuilder required for task '%s'.", getName());
    return androidBuilder;
}

From source file:de.cosmocode.rendering.DefaultMapRenderer.java

@Override
public Map<CharSequence, Object> build() throws RenderingException {
    final Object map = super.build();
    Preconditions.checkState(map instanceof Map<?, ?>, "Expected map, but was %s", map);
    return cast(map);
}

From source file:org.opendaylight.netconf.mapping.api.HandlingPriority.java

public HandlingPriority increasePriority(int priorityIncrease) {
    Preconditions.checkState(priority != null, "Unable to increase priority for %s", this);
    Preconditions.checkArgument(priorityIncrease > 0, "Negative increase");
    Preconditions.checkArgument(Long.valueOf(priority) + priorityIncrease < Integer.MAX_VALUE,
            "Resulting priority cannot be higher than %s", Integer.MAX_VALUE);
    return getHandlingPriority(priority + priorityIncrease);
}

From source file:com.hubrick.raml.mojo.SpringWebGeneratorMojo.java

public void execute() throws MojoExecutionException {
    final JCodeModel codeModel = generateCodeModel();

    Preconditions.checkState(outputDirectory.exists() || outputDirectory.mkdirs(),
            "Unable to create output directory: %s", outputDirectory.getPath());

    try {/*from  ww  w .  ja  v  a  2  s. co  m*/
        codeModel.build(outputDirectory);
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
}