| // 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.base.Preconditions; |
| import com.google.common.collect.ImmutableList; |
| import java.io.IOException; |
| import java.util.List; |
| |
| /** Syntax node for a for loop statement. */ |
| public final class ForStatement extends Statement { |
| |
| private final LValue variable; |
| private final Expression collection; |
| private final ImmutableList<Statement> block; |
| |
| /** |
| * Constructs a for loop statement. |
| */ |
| public ForStatement(LValue variable, Expression collection, List<Statement> block) { |
| this.variable = Preconditions.checkNotNull(variable); |
| this.collection = Preconditions.checkNotNull(collection); |
| this.block = ImmutableList.copyOf(block); |
| } |
| |
| public LValue getVariable() { |
| return variable; |
| } |
| |
| /** |
| * @return The collection we iterate on, e.g. `col` in `for x in col:` |
| */ |
| public Expression getCollection() { |
| return collection; |
| } |
| |
| public ImmutableList<Statement> getBlock() { |
| return block; |
| } |
| |
| @Override |
| public void prettyPrint(Appendable buffer, int indentLevel) throws IOException { |
| printIndent(buffer, indentLevel); |
| buffer.append("for "); |
| variable.prettyPrint(buffer); |
| buffer.append(" in "); |
| collection.prettyPrint(buffer); |
| buffer.append(":\n"); |
| printSuite(buffer, block, indentLevel); |
| } |
| |
| @Override |
| public String toString() { |
| return "for " + variable + " in " + collection + ": ...\n"; |
| } |
| |
| @Override |
| public void accept(SyntaxTreeVisitor visitor) { |
| visitor.visit(this); |
| } |
| |
| @Override |
| public Kind kind() { |
| return Kind.FOR; |
| } |
| } |