/*
* 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.basicfunctions;
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.data.restricted.IntegerData;
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.shared.restricted.SoyPureFunction;
import com.google.template.soy.tofu.restricted.SoyAbstractTofuFunction;
import java.util.List;
import java.util.Set;
/**
* Soy function that takes the max of two numbers.
*
* @author Kai Huang
*/
@Singleton
@SoyPureFunction
class MaxFunction extends SoyAbstractTofuFunction implements SoyJsSrcFunction, SoyJavaSrcFunction {
@Inject
MaxFunction() {}
@Override public String getName() {
return "max";
}
@Override public Set<Integer> getValidArgsSizes() {
return ImmutableSet.of(2);
}
@Override public SoyData compute(List<SoyData> args) {
SoyData arg0 = args.get(0);
SoyData arg1 = args.get(1);
if (arg0 instanceof IntegerData && arg1 instanceof IntegerData) {
return toSoyData(Math.max(arg0.integerValue(), arg1.integerValue()));
} else {
return toSoyData(Math.max(arg0.numberValue(), arg1.numberValue()));
}
}
@Override public JsExpr computeForJsSrc(List<JsExpr> args) {
JsExpr arg0 = args.get(0);
JsExpr arg1 = args.get(1);
return new JsExpr(
"Math.max(" + arg0.getText() + ", " + arg1.getText() + ")", Integer.MAX_VALUE);
}
@Override public JavaExpr computeForJavaSrc(List<JavaExpr> args) {
JavaExpr arg0 = args.get(0);
JavaExpr arg1 = args.get(1);
return JavaCodeUtils.genJavaExprForNumberToNumberBinaryFunction(
"Math.max", "$$max", arg0, arg1);
}
}