| // 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.util.List; |
| |
| /** Syntax node for a for loop statement. */ |
| public final class ForStatement extends Statement { |
| |
| private final int forOffset; |
| private final Expression vars; |
| private final Expression collection; |
| private final ImmutableList<Statement> body; // non-empty if well formed |
| |
| /** Constructs a for loop statement. */ |
| ForStatement( |
| FileLocations locs, |
| int forOffset, |
| Expression vars, |
| Expression collection, |
| List<Statement> body) { |
| super(locs); |
| this.forOffset = forOffset; |
| this.vars = Preconditions.checkNotNull(vars); |
| this.collection = Preconditions.checkNotNull(collection); |
| this.body = ImmutableList.copyOf(body); |
| } |
| |
| public Expression getVars() { |
| return vars; |
| } |
| |
| /** |
| * @return The collection we iterate on, e.g. `col` in `for x in col:` |
| */ |
| public Expression getCollection() { |
| return collection; |
| } |
| |
| public ImmutableList<Statement> getBody() { |
| return body; |
| } |
| |
| @Override |
| public int getStartOffset() { |
| return forOffset; |
| } |
| |
| @Override |
| public int getEndOffset() { |
| return body.isEmpty() |
| ? collection.getEndOffset() // wrong, but tree is ill formed |
| : body.get(body.size() - 1).getEndOffset(); |
| } |
| |
| @Override |
| public String toString() { |
| return "for " + vars + " in " + collection + ": ...\n"; |
| } |
| |
| @Override |
| public void accept(NodeVisitor visitor) { |
| visitor.visit(this); |
| } |
| |
| @Override |
| public Kind kind() { |
| return Kind.FOR; |
| } |
| } |