/*
* Copyright 2009 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.bidifunctions;
import static com.google.template.soy.javasrc.restricted.SoyJavaSrcFunctionUtils.toStringJavaExpr;
import static com.google.template.soy.shared.restricted.SoyJavaRuntimeFunctionUtils.toSoyData;
import com.google.common.collect.ImmutableSet;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.Singleton;
import com.google.template.soy.data.SoyData;
import com.google.template.soy.exprtree.Operator;
import com.google.template.soy.internal.i18n.BidiGlobalDir;
import com.google.template.soy.internal.i18n.SoyBidiUtils;
import com.google.template.soy.javasrc.restricted.JavaCodeUtils;
import com.google.template.soy.javasrc.restricted.JavaExpr;
import com.google.template.soy.javasrc.restricted.SoyJavaSrcFunction;
import com.google.template.soy.jssrc.restricted.JsExpr;
import com.google.template.soy.jssrc.restricted.SoyJsSrcFunction;
import com.google.template.soy.tofu.restricted.SoyAbstractTofuFunction;
import java.util.List;
import java.util.Set;
/**
* Soy function that gets the name of the end edge ('left' or 'right') for the current global bidi
* directionality.
*
* @author Aharon Lanin
* @author Kai Huang
*/
@Singleton
class BidiEndEdgeFunction extends SoyAbstractTofuFunction
implements SoyJsSrcFunction, SoyJavaSrcFunction {
/** Provider for the current bidi global directionality. */
private final Provider<BidiGlobalDir> bidiGlobalDirProvider;
/**
* @param bidiGlobalDirProvider Provider for the current bidi global directionality.
*/
@Inject
BidiEndEdgeFunction(Provider<BidiGlobalDir> bidiGlobalDirProvider) {
this.bidiGlobalDirProvider = bidiGlobalDirProvider;
}
@Override public String getName() {
return "bidiEndEdge";
}
@Override public Set<Integer> getValidArgsSizes() {
return ImmutableSet.of(0);
}
@Override public SoyData compute(List<SoyData> args) {
return toSoyData((bidiGlobalDirProvider.get().getStaticValue() < 0) ? "left" : "right");
}
@Override public JsExpr computeForJsSrc(List<JsExpr> args) {
BidiGlobalDir bidiGlobalDir = bidiGlobalDirProvider.get();
if (bidiGlobalDir.isStaticValue()) {
return new JsExpr(
(bidiGlobalDir.getStaticValue() < 0) ? "'left'" : "'right'", Integer.MAX_VALUE);
}
return new JsExpr(
"(" + bidiGlobalDir.getCodeSnippet() + ") < 0 ? 'left' : 'right'",
Operator.CONDITIONAL.getPrecedence());
}
@Override public JavaExpr computeForJavaSrc(List<JavaExpr> args) {
BidiGlobalDir bidiGlobalDir = bidiGlobalDirProvider.get();
if (bidiGlobalDir.isStaticValue()) {
return toStringJavaExpr(JavaCodeUtils.genNewStringData(
(bidiGlobalDir.getStaticValue() < 0) ? "\"left\"" : "\"right\""));
}
String bidiFunctionName = SoyBidiUtils.class.getName() + ".getBidiFormatter(" +
bidiGlobalDir.getCodeSnippet() + ").endEdge";
return toStringJavaExpr(JavaCodeUtils.genNewStringData(
JavaCodeUtils.genFunctionCall(bidiFunctionName)));
}
}