com.google.template.soy.jssrc.dsl.MapLiteral.java Source code

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Here is the source code for com.google.template.soy.jssrc.dsl.MapLiteral.java

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/*
 * Copyright 2016 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.jssrc.dsl;

import com.google.auto.value.AutoValue;
import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.google.errorprone.annotations.Immutable;
import com.google.template.soy.jssrc.restricted.JsExpr;

/** Represents a JavaScript map literal expression. */
@AutoValue
@Immutable
abstract class MapLiteral extends CodeChunk.WithValue {

    abstract ImmutableList<? extends CodeChunk.WithValue> keys();

    abstract ImmutableList<? extends CodeChunk.WithValue> values();

    static MapLiteral create(ImmutableList<? extends CodeChunk.WithValue> keys,
            ImmutableList<? extends CodeChunk.WithValue> values) {
        Preconditions.checkArgument(keys.size() == values.size(), "Mismatch between keys and values.");
        ImmutableSet.Builder<CodeChunk> initialStatements = ImmutableSet.builder();
        for (CodeChunk.WithValue key : keys) {
            initialStatements.addAll(key.initialStatements());
        }
        for (CodeChunk.WithValue value : values) {
            initialStatements.addAll(value.initialStatements());
        }
        return new AutoValue_MapLiteral(initialStatements.build(), keys, values);
    }

    @Override
    public JsExpr singleExprOrName() {
        FormattingContext ctx = new FormattingContext();
        ctx.appendOutputExpression(this);
        return new JsExpr(ctx.toString(), Integer.MAX_VALUE);
    }

    @Override
    void doFormatOutputExpr(FormattingContext ctx) {
        ctx.append('{');
        for (int i = 0; i < keys().size(); i++) {
            if (i > 0) {
                ctx.append(", ");
            }
            ctx.appendOutputExpression(keys().get(i)).append(": ").appendOutputExpression(values().get(i));
        }
        ctx.append('}');
    }

    @Override
    void doFormatInitialStatements(FormattingContext ctx) {
        for (CodeChunk.WithValue key : keys()) {
            ctx.appendInitialStatements(key);
        }
        for (CodeChunk.WithValue value : values()) {
            ctx.appendInitialStatements(value);
        }
    }

    @Override
    public void collectRequires(RequiresCollector collector) {
        for (CodeChunk.WithValue key : keys()) {
            key.collectRequires(collector);
        }
        for (CodeChunk.WithValue value : values()) {
            value.collectRequires(collector);
        }
    }
}