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// 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;
}
}
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