src/main/java/com/google/devtools/build/lib/skylarkbuildapi/platform/PlatformCommonApi.java

// Copyright 2018 The Bazel Authors. All rights reserved.
//
// 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.devtools.build.lib.skylarkbuildapi.platform;

import com.google.devtools.build.lib.skylarkbuildapi.ProviderApi;
import com.google.devtools.build.lib.skylarkinterface.SkylarkCallable;
import com.google.devtools.build.lib.skylarkinterface.SkylarkModule;
import com.google.devtools.build.lib.syntax.StarlarkSemantics.FlagIdentifier;

/** Module containing functions to interact with the platform APIs. */
@SkylarkModule(
    name = "platform_common",
    doc = "Functions for Starlark to interact with the platform APIs.")
public interface PlatformCommonApi {
  @SkylarkCallable(
      name = "TemplateVariableInfo",
      doc =
          "The provider used to retrieve the provider that contains the template variables "
              + "defined by a particular toolchain, for example by calling "
              + "ctx.attr._cc_toolchain[platform_common.TemplateVariableInfo].make_variables[<name>]",
      structField = true)
  ProviderApi getMakeVariableProvider();

  @SkylarkCallable(
      name = "ToolchainInfo",
      doc =
          "The provider constructor for ToolchainInfo. The constructor takes the type of the "
              + "toolchain, and a map of the toolchain's data.",
      structField = true)
  ProviderApi getToolchainInfoConstructor();

  @SkylarkCallable(
      name = "PlatformInfo",
      doc =
          "The provider constructor for PlatformInfo. The constructor takes the list of "
              + "ConstraintValueInfo providers that defines the platform. "
              + PlatformInfoApi.EXPERIMENTAL_WARNING,
      structField = true,
      enableOnlyWithFlag = FlagIdentifier.EXPERIMENTAL_PLATFORM_API)
  ProviderApi getPlatformInfoConstructor();

  @SkylarkCallable(
      name = "ConstraintSettingInfo",
      doc =
          "The provider constructor for ConstraintSettingInfo. The constructor takes the label "
              + "that uniquely identifies the constraint (and which should always be ctx.label). "
              + PlatformInfoApi.EXPERIMENTAL_WARNING,
      structField = true,
      enableOnlyWithFlag = FlagIdentifier.EXPERIMENTAL_PLATFORM_API)
  ProviderApi getConstraintSettingInfoConstructor();

  @SkylarkCallable(
      name = "ConstraintValueInfo",
      doc =
          "The provider constructor for ConstraintValueInfo. The constructor takes the label that "
              + "uniquely identifies the constraint value (and which should always be ctx.label), "
              + "and the ConstraintSettingInfo which the value belongs to. "
              + PlatformInfoApi.EXPERIMENTAL_WARNING,
      structField = true,
      enableOnlyWithFlag = FlagIdentifier.EXPERIMENTAL_PLATFORM_API)
  ProviderApi getConstraintValueInfoConstructor();
}