| /* |
| * Copyright 2014-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.rules.coercer; |
| |
| import com.facebook.buck.io.ProjectFilesystem; |
| import com.facebook.buck.parser.BuildTargetParser; |
| import com.facebook.buck.rules.SourcePath; |
| import com.google.common.base.Optional; |
| |
| import java.nio.file.Path; |
| |
| /** |
| * A type coercer to handle source entries in OCaml rules. |
| */ |
| public class OCamlSourceTypeCoercer implements TypeCoercer<OCamlSource> { |
| private final TypeCoercer<SourcePath> sourcePathTypeCoercer; |
| |
| OCamlSourceTypeCoercer( |
| TypeCoercer<SourcePath> sourcePathTypeCoercer) { |
| this.sourcePathTypeCoercer = sourcePathTypeCoercer; |
| } |
| |
| @Override |
| public Class<OCamlSource> getOutputClass() { |
| return OCamlSource.class; |
| } |
| |
| @Override |
| public boolean hasElementClass(Class<?>... types) { |
| return sourcePathTypeCoercer.hasElementClass(types); |
| } |
| |
| @Override |
| public void traverse(OCamlSource object, Traversal traversal) { |
| sourcePathTypeCoercer.traverse(object.getSource(), traversal); |
| } |
| |
| @Override |
| public Optional<OCamlSource> getOptionalValue() { |
| return Optional.absent(); |
| } |
| |
| @Override |
| public OCamlSource coerce( |
| BuildTargetParser buildTargetParser, |
| ProjectFilesystem filesystem, |
| Path pathRelativeToProjectRoot, |
| Object object) throws CoerceFailedException { |
| if (object instanceof OCamlSource) { |
| return (OCamlSource) object; |
| } |
| |
| if (object instanceof String) { |
| String name = (String) object; |
| return OCamlSource.ofNameAndSourcePath( |
| name, sourcePathTypeCoercer.coerce( |
| buildTargetParser, |
| filesystem, |
| pathRelativeToProjectRoot, |
| object)); |
| } |
| |
| throw CoerceFailedException.simple(object, getOutputClass()); |
| } |
| } |