com.google.template.soy.soytree.SwitchCaseNode.java Source code

Introduction

Here is the source code for com.google.template.soy.soytree.SwitchCaseNode.java

Source

/*
 * Copyright 2008 Google 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.google.template.soy.soytree;

import com.google.common.collect.Lists;
import com.google.template.soy.base.SourceLocation;
import com.google.template.soy.basetree.CopyState;
import com.google.template.soy.error.ErrorReporter;
import com.google.template.soy.exprparse.ExpressionParser;
import com.google.template.soy.exprtree.ExprRootNode;
import com.google.template.soy.soytree.SoyNode.ConditionalBlockNode;
import com.google.template.soy.soytree.SoyNode.ExprHolderNode;

import java.util.List;

/**
 * Node representing a 'case' block in a 'switch' block.
 *
 * <p> Important: Do not use outside of Soy code (treat as superpackage-private).
 *
 */
public final class SwitchCaseNode extends CaseOrDefaultNode implements ConditionalBlockNode, ExprHolderNode {

    /** The text for this case's expression list. */
    private final String exprListText;

    /** The parsed expression list. */
    private final List<ExprRootNode> exprList;

    private SwitchCaseNode(int id, String commandText, List<ExprRootNode> exprList, SourceLocation sourceLocation) {
        super(id, sourceLocation, "case", commandText);
        this.exprList = exprList;
        this.exprListText = commandText;
    }

    /**
     * Copy constructor.
     * @param orig The node to copy.
     */
    private SwitchCaseNode(SwitchCaseNode orig, CopyState copyState) {
        super(orig, copyState);
        this.exprListText = orig.exprListText;
        this.exprList = Lists.newArrayListWithCapacity(orig.exprList.size());
        for (ExprRootNode origExpr : orig.exprList) {
            this.exprList.add(origExpr.copy(copyState));
        }
    }

    @Override
    public Kind getKind() {
        return Kind.SWITCH_CASE_NODE;
    }

    /** Returns the text for this case's expression list. */
    public String getExprListText() {
        return exprListText;
    }

    /** Returns the parsed expression list, or null if the expression list is not in V2 syntax. */
    public List<ExprRootNode> getExprList() {
        return exprList;
    }

    @Override
    public List<ExprUnion> getAllExprUnions() {
        return ExprUnion.createList(exprList);
    }

    @Override
    public SwitchCaseNode copy(CopyState copyState) {
        return new SwitchCaseNode(this, copyState);
    }

    /**
     * Builder for {@link SwitchCaseNode}.
     */
    public static final class Builder {
        private final int id;
        private final String commandText;
        private final SourceLocation sourceLocation;

        /**
         * @param id The node's id.
         * @param commandText The node's command text.
         * @param sourceLocation The node's source location.
         */
        public Builder(int id, String commandText, SourceLocation sourceLocation) {
            this.id = id;
            this.commandText = commandText;
            this.sourceLocation = sourceLocation;
        }

        /**
         * Returns a new {@link SwitchCaseNode} from the state of this builder, reporting syntax errors
         * to the given {@link ErrorReporter}.
         */
        public SwitchCaseNode build(ErrorReporter errorReporter) {
            List<ExprRootNode> exprList = ExprRootNode
                    .wrap(new ExpressionParser(commandText, sourceLocation, errorReporter).parseExpressionList());
            return new SwitchCaseNode(id, commandText, exprList, sourceLocation);
        }
    }

}