Exemplo n.º 1
0
  @Override
  void validate(final ValidationEnvironment env) throws EvalException {
    ValidationEnvironment localEnv = new ValidationEnvironment(env);
    FunctionSignature sig = signature.getSignature();
    FunctionSignature.Shape shape = sig.getShape();
    ImmutableList<String> names = sig.getNames();
    List<Expression> defaultExpressions = signature.getDefaultValues();

    int positionals = shape.getPositionals();
    int mandatoryPositionals = shape.getMandatoryPositionals();
    int namedOnly = shape.getNamedOnly();
    int mandatoryNamedOnly = shape.getMandatoryNamedOnly();
    boolean starArg = shape.hasStarArg();
    boolean kwArg = shape.hasKwArg();
    int named = positionals + namedOnly;
    int args = named + (starArg ? 1 : 0) + (kwArg ? 1 : 0);
    int startOptionals = mandatoryPositionals;
    int endOptionals = named - mandatoryNamedOnly;

    int j = 0; // index for the defaultExpressions
    for (int i = 0; i < args; i++) {
      String name = names.get(i);
      if (startOptionals <= i && i < endOptionals) {
        defaultExpressions.get(j++).validate(env);
      }
      localEnv.declare(name, getLocation());
    }
    for (Statement stmts : statements) {
      stmts.validate(localEnv);
    }
  }
Exemplo n.º 2
0
  /** Create a function using a signature with defaults */
  public MixedModeFunction(
      String name, FunctionSignature.WithValues<Object, SkylarkType> signature, Location location) {
    super(name);

    // TODO(bazel-team): lift the following limitations, by actually implementing
    // the full function call protocol.
    FunctionSignature sig = signature.getSignature();
    FunctionSignature.Shape shape = sig.getShape();
    Preconditions.checkArgument(
        !shape.hasKwArg() && !shape.hasStarArg() && shape.getNamedOnly() == 0,
        "no star, star-star or named-only parameters (for now)");

    this.signature = signature;
    this.parameters = ImmutableList.copyOf(sig.getNames());
    this.numMandatoryParameters = shape.getMandatoryPositionals();
    this.onlyNamedArguments = false;
    this.location = location;
  }