| // Copyright 2014 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.syntax; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.ImmutableMap; |
| import java.io.IOException; |
| import java.util.Map; |
| |
| /** |
| * Syntax node for an import statement. |
| */ |
| public final class LoadStatement extends Statement { |
| |
| private final ImmutableMap<Identifier, String> symbolMap; |
| private final StringLiteral imp; |
| |
| /** |
| * Constructs an import statement. |
| * |
| * <p>{@code symbols} maps a symbol to the original name under which it was defined in |
| * the bzl file that should be loaded. If aliasing is used, the value differs from its key's |
| * {@code symbol.getName()}. Otherwise, both values are identical. |
| */ |
| public LoadStatement(StringLiteral imp, Map<Identifier, String> symbolMap) { |
| this.imp = imp; |
| this.symbolMap = ImmutableMap.copyOf(symbolMap); |
| } |
| |
| public ImmutableMap<Identifier, String> getSymbolMap() { |
| return symbolMap; |
| } |
| |
| public ImmutableList<Identifier> getSymbols() { |
| return ImmutableList.copyOf(symbolMap.keySet()); |
| } |
| |
| public StringLiteral getImport() { |
| return imp; |
| } |
| |
| @Override |
| public void prettyPrint(Appendable buffer, int indentLevel) throws IOException { |
| printIndent(buffer, indentLevel); |
| buffer.append("load("); |
| imp.prettyPrint(buffer); |
| for (Identifier symbol : symbolMap.keySet()) { |
| buffer.append(", "); |
| String origName = symbolMap.get(symbol); |
| if (origName.equals(symbol.getName())) { |
| buffer.append('"'); |
| symbol.prettyPrint(buffer); |
| buffer.append('"'); |
| } else { |
| symbol.prettyPrint(buffer); |
| buffer.append("=\""); |
| buffer.append(origName); |
| buffer.append('"'); |
| } |
| } |
| buffer.append(")\n"); |
| } |
| |
| @Override |
| public void accept(SyntaxTreeVisitor visitor) { |
| visitor.visit(this); |
| } |
| |
| @Override |
| public Kind kind() { |
| return Kind.LOAD; |
| } |
| } |