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Support null/undefined values in extern params and return (record) va…
…lues. PiperOrigin-RevId: 679294308
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69 changes: 69 additions & 0 deletions
69
java/src/com/google/template/soy/plugin/java/SharedExternRuntime.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,69 @@ | ||
| /* | ||
| * Copyright 2024 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. | ||
| */ | ||
|
|
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| package com.google.template.soy.plugin.java; | ||
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| import static com.google.common.collect.ImmutableMap.toImmutableMap; | ||
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| import com.google.common.collect.ImmutableMap; | ||
| import com.google.errorprone.annotations.Keep; | ||
| import com.google.template.soy.data.SoyRecord; | ||
| import com.google.template.soy.data.SoyValue; | ||
| import com.google.template.soy.data.SoyValueProvider; | ||
| import com.google.template.soy.data.SoyValueUnconverter; | ||
| import com.google.template.soy.data.restricted.NullData; | ||
| import java.util.HashMap; | ||
| import java.util.Map; | ||
| import java.util.Map.Entry; | ||
| import javax.annotation.Nullable; | ||
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| /** Support for the renderCss extern function. */ | ||
| public class SharedExternRuntime { | ||
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| private SharedExternRuntime() {} | ||
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| @Keep | ||
| @Nullable | ||
| public static Map<String, ?> recordToMap(SoyValue value) { | ||
| if (value.isNullish()) { | ||
| return null; | ||
| } | ||
| Map<String, Object> map = new HashMap<>(); | ||
| for (Entry<String, SoyValueProvider> e : ((SoyRecord) value).recordAsMap().entrySet()) { | ||
| map.put(e.getKey(), unconvert(e.getValue(), false)); | ||
| } | ||
| return map; | ||
| } | ||
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| @Keep | ||
| @Nullable | ||
| public static ImmutableMap<String, ?> recordToImmutableMap(SoyValue value) { | ||
| if (value.isNullish()) { | ||
| return null; | ||
| } | ||
| SoyRecord map = (SoyRecord) value; | ||
| return map.recordAsMap().entrySet().stream() | ||
| .collect(toImmutableMap(Entry::getKey, e -> unconvert(e.getValue(), true))); | ||
| } | ||
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| private static Object unconvert(SoyValueProvider svp, boolean marshalNull) { | ||
| Object value = SoyValueUnconverter.unconvert(svp.resolve()); | ||
| if (marshalNull && value == null) { | ||
| return NullData.INSTANCE; | ||
| } | ||
| return value; | ||
| } | ||
| } |
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