/*
* 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.shared.restricted.SoyJavaRuntimeFunctionUtils.toSoyData;
import com.google.common.collect.ImmutableSet;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import com.google.template.soy.data.SoyData;
import com.google.template.soy.internal.i18n.BidiUtils;
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.javasrc.restricted.SoyJavaSrcFunctionUtils;
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 bidi directionality of a text string (1 for LTR, -1 for RTL, or
* 0 for none).
*
* @author Aharon Lanin
* @author Kai Huang
*/
@Singleton
class BidiTextDirFunction extends SoyAbstractTofuFunction
implements SoyJsSrcFunction, SoyJavaSrcFunction {
@Inject
BidiTextDirFunction() {}
@Override public String getName() {
return "bidiTextDir";
}
@Override public Set<Integer> getValidArgsSizes() {
return ImmutableSet.of(1, 2);
}
@Override public SoyData compute(List<SoyData> args) {
String text = args.get(0).stringValue();
//noinspection SimplifiableConditionalExpression
boolean isHtml = (args.size() == 2) ? args.get(1).booleanValue() : false /* default */;
return toSoyData(BidiUtils.estimateDirection(text, isHtml).ord);
}
@Override public JsExpr computeForJsSrc(List<JsExpr> args) {
JsExpr text = args.get(0);
JsExpr isHtml = (args.size() == 2) ? args.get(1) : null;
String callText = (isHtml != null) ?
"soy.$$bidiTextDir(" + text.getText() + ", " + isHtml.getText() + ")" :
"soy.$$bidiTextDir(" + text.getText() + ")";
return new JsExpr(callText, Integer.MAX_VALUE);
}
@Override public JavaExpr computeForJavaSrc(List<JavaExpr> args) {
JavaExpr text = args.get(0);
JavaExpr isHtml = (args.size() == 2) ? args.get(1) : null;
String bidiFunctionName = BidiUtils.class.getName() + ".estimateDirection";
return SoyJavaSrcFunctionUtils.toIntegerJavaExpr(
JavaCodeUtils.genNewIntegerData(
JavaCodeUtils.genFunctionCall(
bidiFunctionName,
JavaCodeUtils.genCoerceString(text),
isHtml != null ? JavaCodeUtils.genCoerceBoolean(isHtml) : "false") +
".ord"));
}
}