Java SkylarkList類代碼示例

import com.google.devtools.build.lib.syntax.SkylarkList; //導入依賴的package包/類
@SuppressWarnings("unused")
public SkylarkList<Transformation> invoke(Core self, SkylarkList<Transformation> transforms,
    Location location)
    throws EvalException {

  ImmutableList.Builder<Transformation> builder = ImmutableList.builder();
  for (Transformation t : transforms.getContents(Transformation.class, "transformations")) {
    try {
      builder.add(t.reverse());
    } catch (NonReversibleValidationException e) {
      throw new EvalException(location, e.getMessage());
    }
  }

  return SkylarkList.createImmutable(builder.build().reverse());
}
 

import com.google.devtools.build.lib.syntax.SkylarkList; //導入依賴的package包/類
public NoneType invoke(GitModule self, String name, String origin, String destination,
    SkylarkList<String> strRefSpecs, Boolean prune, Location location, Environment env)
    throws EvalException {
  GeneralOptions generalOptions = self.options.get(GeneralOptions.class);
  List<Refspec> refspecs = new ArrayList<>();

  for (String refspec : SkylarkList.castList(strRefSpecs, String.class, "refspecs")) {
    refspecs.add(Refspec.create(
        generalOptions.getEnvironment(), generalOptions.getCwd(), refspec, location));
  }
  Core.getCore(env).addMigration(location, name,
      new Mirror(generalOptions, self.options.get(GitOptions.class),
          name, origin, destination, refspecs,
          self.options.get(GitMirrorOptions.class), prune, self.mainConfigFile));
  return Runtime.NONE;
}
 

import com.google.devtools.build.lib.syntax.SkylarkList; //導入依賴的package包/類
public void checkAttributesNonEmpty(
    Rule rule, RuleErrorConsumer ruleErrorConsumer, AttributeMap attributes) {
  for (String attributeName : attributes.getAttributeNames()) {
    Attribute attr = attributes.getAttributeDefinition(attributeName);
    if (!attr.isNonEmpty()) {
      continue;
    }
    Object attributeValue = attributes.get(attributeName, attr.getType());

    boolean isEmpty = false;
    if (attributeValue instanceof SkylarkList) {
      isEmpty = ((SkylarkList) attributeValue).isEmpty();
    } else if (attributeValue instanceof List<?>) {
      isEmpty = ((List<?>) attributeValue).isEmpty();
    } else if (attributeValue instanceof Map<?, ?>) {
      isEmpty = ((Map<?, ?>) attributeValue).isEmpty();
    }

    if (isEmpty) {
      ruleErrorConsumer.attributeError(attr.getName(), "attribute must be non empty");
    }
  }
}
 

import com.google.devtools.build.lib.syntax.SkylarkList; //導入依賴的package包/類
@Override
@SuppressWarnings("unchecked")
protected JavaInfo createInstanceFromSkylark(Object[] args, Location loc)
    throws EvalException {

  JavaInfo javaInfo =
      JavaInfoBuildHelper.getInstance()
          .createJavaInfo(
              (Artifact) args[0],
              (SkylarkList<Artifact>) args[1],
              (SkylarkList<Artifact>) args[2],
              (Boolean) args[3],
              (Boolean) args[4],
              (SkylarkList<JavaInfo>) args[5],
              (SkylarkList<JavaInfo>) args[6],
              (SkylarkList<JavaInfo>) args[7],
              args[8],
              args[9],
              loc);

  return javaInfo;
}
 

import com.google.devtools.build.lib.syntax.SkylarkList; //導入依賴的package包/類
@Override
protected PlatformInfo createInstanceFromSkylark(Object[] args, Location loc)
    throws EvalException {
  // Based on SIGNATURE above, the args are label, constraint_values.

  Label label = (Label) args[0];
  List<ConstraintValueInfo> constraintValues =
      SkylarkList.castSkylarkListOrNoneToList(
          args[1], ConstraintValueInfo.class, "constraint_values");
  try {
    return builder()
        .setLabel(label)
        .addConstraints(constraintValues)
        .setLocation(loc)
        .build();
  } catch (DuplicateConstraintException dce) {
    throw new EvalException(
        loc, String.format("Cannot create PlatformInfo: %s", dce.getMessage()));
  }
}
 

import com.google.devtools.build.lib.syntax.SkylarkList; //導入依賴的package包/類
public Provider invoke(String doc, Object fields, Location location) throws EvalException {
  Iterable<String> fieldNames = null;
  if (fields instanceof SkylarkList<?>) {
    @SuppressWarnings("unchecked")
    SkylarkList<String> list = (SkylarkList<String>)
            SkylarkType.cast(
                fields,
                SkylarkList.class, String.class, location,
                "Expected list of strings or dictionary of string -> string for 'fields'");
    fieldNames = list;
  }  else  if (fields instanceof SkylarkDict) {
    Map<String, String> dict = SkylarkType.castMap(
        fields,
        String.class, String.class,
        "Expected list of strings or dictionary of string -> string for 'fields'");
    fieldNames = dict.keySet();
  }
  return SkylarkProvider.createUnexportedSchemaful(fieldNames, location);
}
 

import com.google.devtools.build.lib.syntax.SkylarkList; //導入依賴的package包/類
@SuppressWarnings("unused")
public NoneType invoke(
    Args self,
    Object value,
    Object format,
    Object beforeEach,
    Object joinWith,
    Object mapFn,
    Location loc)
    throws EvalException {
  if (self.isImmutable()) {
    throw new EvalException(null, "cannot modify frozen value");
  }
  if (value instanceof SkylarkNestedSet || value instanceof SkylarkList) {
    self.addVectorArg(value, format, beforeEach, joinWith, mapFn, loc);
  } else {
    self.addScalarArg(value, format, beforeEach, joinWith, mapFn, loc);
  }
  return Runtime.NONE;
}
 

import com.google.devtools.build.lib.syntax.SkylarkList; //導入依賴的package包/類
@SuppressWarnings("unused")
public String invoke(
    SkylarkRuleContext ctx,
    String input,
    SkylarkList targets,
    Location loc,
    Environment env)
    throws EvalException {
  ctx.checkMutable("expand_location");
  try {
    return LocationExpander.withExecPaths(
            ctx.getRuleContext(),
            makeLabelMap(targets.getContents(TransitiveInfoCollection.class, "targets")))
        .expand(input);
  } catch (IllegalStateException ise) {
    throw new EvalException(loc, ise);
  }
}
 

import com.google.devtools.build.lib.syntax.SkylarkList; //導入依賴的package包/類
@SkylarkCallable(
  doc =
      "Expands all references to labels embedded within a string for all files using a mapping "
        + "from definition labels (i.e. the label in the output type attribute) to files. "
        + "Deprecated.",
  documented = false
)
public String expand(
    @Nullable String expression, SkylarkList<Object> artifacts, Label labelResolver)
    throws EvalException, FuncallException {
  checkMutable("expand");
  try {
    Map<Label, Iterable<Artifact>> labelMap = new HashMap<>();
    for (Artifact artifact : artifacts.getContents(Artifact.class, "artifacts")) {
      labelMap.put(artifactsLabelMap.get(artifact), ImmutableList.of(artifact));
    }
    return LabelExpander.expand(expression, labelMap, labelResolver);
  } catch (NotUniqueExpansionException e) {
    throw new FuncallException(e.getMessage() + " while expanding '" + expression + "'");
  }
}
 

import com.google.devtools.build.lib.syntax.SkylarkList; //導入依賴的package包/類
private static void setAllowedFileTypes(
    String attr, Object fileTypesObj, FuncallExpression ast, Attribute.Builder<?> builder)
    throws EvalException {
  if (fileTypesObj == Boolean.TRUE) {
    builder.allowedFileTypes(FileTypeSet.ANY_FILE);
  } else if (fileTypesObj == Boolean.FALSE) {
    builder.allowedFileTypes(FileTypeSet.NO_FILE);
  } else if (fileTypesObj instanceof SkylarkFileType) {
    // TODO(laurentlb): deprecated, to be removed
    builder.allowedFileTypes(((SkylarkFileType) fileTypesObj).getFileTypeSet());
  } else if (fileTypesObj instanceof SkylarkList) {
    List<String> arg =
        SkylarkList.castSkylarkListOrNoneToList(
            fileTypesObj, String.class, "allow_files argument");
    builder.allowedFileTypes(FileType.of(arg));
  } else {
    throw new EvalException(
        ast.getLocation(), attr + " should be a boolean or a string list");
  }
}
 

import com.google.devtools.build.lib.syntax.SkylarkList; //導入依賴的package包/類
/**
 * Builds a list of sets of accepted providers from Skylark list {@code obj}.
 * The list can either be a list of providers (in that case the result is a list with one
 * set) or a list of lists of providers (then the result is the list of sets).
 * @param argumentName used in error messages.
 * @param location location for error messages.
 */
static ImmutableList<ImmutableSet<SkylarkProviderIdentifier>> buildProviderPredicate(
    SkylarkList<?> obj, String argumentName, Location location) throws EvalException {
  if (obj.isEmpty()) {
    return ImmutableList.of();
  }
  boolean isListOfProviders = true;
  for (Object o : obj) {
    if (!isProvider(o)) {
      isListOfProviders = false;
      break;
    }
  }
  if (isListOfProviders) {
    return ImmutableList.of(getSkylarkProviderIdentifiers(obj, location));
  } else {
    return getProvidersList(obj, argumentName, location);
  }
}
 

import com.google.devtools.build.lib.syntax.SkylarkList; //導入依賴的package包/類
/**
 * Converts Skylark identifiers of providers (either a string or a provider value)
 * to their internal representations.
 */
static ImmutableSet<SkylarkProviderIdentifier> getSkylarkProviderIdentifiers(
    SkylarkList<?> list, Location location) throws EvalException {
  ImmutableList.Builder<SkylarkProviderIdentifier> result = ImmutableList.builder();

  for (Object obj : list) {
    if (obj instanceof String) {
      result.add(SkylarkProviderIdentifier.forLegacy((String) obj));
    } else if (obj instanceof Provider) {
      Provider constructor = (Provider) obj;
      if (!constructor.isExported()) {
        throw new EvalException(location,
            "Providers should be top-level values in extension files that define them.");
      }
      result.add(SkylarkProviderIdentifier.forKey(constructor.getKey()));
    }
  }
  return ImmutableSet.copyOf(result.build());
}
 

import com.google.devtools.build.lib.syntax.SkylarkList; //導入依賴的package包/類
private static ImmutableList<ImmutableSet<SkylarkProviderIdentifier>> getProvidersList(
    SkylarkList<?> skylarkList, String argumentName, Location location) throws EvalException {
  ImmutableList.Builder<ImmutableSet<SkylarkProviderIdentifier>> providersList =
      ImmutableList.builder();
  String errorMsg = "Illegal argument: element in '%s' is of unexpected type. "
      + "Either all elements should be providers, "
      + "or all elements should be lists of providers, but got %s.";

  for (Object o : skylarkList) {
    if (!(o instanceof SkylarkList)) {
      throw new EvalException(location, String.format(errorMsg, PROVIDERS_ARG,
          "an element of type " + EvalUtils.getDataTypeName(o, true)));
    }
    for (Object value : (SkylarkList) o) {
      if (!isProvider(value)) {
        throw new EvalException(location, String.format(errorMsg, argumentName,
            "list with an element of type "
                + EvalUtils.getDataTypeNameFromClass(value.getClass())));
      }
    }
    providersList.add(getSkylarkProviderIdentifiers((SkylarkList<?>) o, location));
  }
  return providersList.build();
}
 

import com.google.devtools.build.lib.syntax.SkylarkList; //導入依賴的package包/類
public Descriptor invoke(
    Integer defaultInt,
    String doc,
    Boolean mandatory,
    SkylarkList<?> values,
    FuncallExpression ast,
    Environment env)
    throws EvalException {
  // TODO(bazel-team): Replace literal strings with constants.
  env.checkLoadingOrWorkspacePhase("attr.int", ast.getLocation());
  return createAttrDescriptor(
      getName(),
      EvalUtils.<String, Object>optionMap(
          env, DEFAULT_ARG, defaultInt, MANDATORY_ARG, mandatory, VALUES_ARG, values),
      Type.INTEGER,
      ast,
      env);
}
 

import com.google.devtools.build.lib.syntax.SkylarkList; //導入依賴的package包/類
@Test
public void javaInfoSourceJarsExposed() throws Exception {
  scratch.file(
      "foo/extension.bzl",
      "result = provider()",
      "def _impl(ctx):",
      "  return [result(source_jars = ctx.attr.dep[JavaInfo].source_jars)]",
      "my_rule = rule(_impl, attrs = { 'dep' : attr.label() })");
  scratch.file(
      "foo/BUILD",
      "load(':extension.bzl', 'my_rule')",
      "java_library(name = 'my_java_lib_b', srcs = ['java/B.java'])",
      "java_library(name = 'my_java_lib_a', srcs = ['java/A.java'] , deps = [':my_java_lib_b'])",
      "my_rule(name = 'my_skylark_rule', dep = ':my_java_lib_a')");
  assertNoEvents();
  ConfiguredTarget myRuleTarget = getConfiguredTarget("//foo:my_skylark_rule");
  Info info = myRuleTarget.get(
      new SkylarkKey(Label.parseAbsolute("//foo:extension.bzl"), "result"));
  @SuppressWarnings("unchecked") SkylarkList<Artifact> sourceJars =
      (SkylarkList<Artifact>) (info.getValue("source_jars"));
  assertThat(prettyArtifactNames(sourceJars)).containsExactly("foo/libmy_java_lib_a-src.jar");

  assertThat(prettyArtifactNames(sourceJars)).doesNotContain("foo/libmy_java_lib_b-src.jar");
}