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Rename StructuredDataPipe to StructuredDataBuffer, implement ValueEle…
…mentReader
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src/main/java/blue/endless/jankson/api/DeserializerFunction.java
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93 changes: 93 additions & 0 deletions
93
src/main/java/blue/endless/jankson/api/io/ValueElementReader.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
| /* | ||
| * MIT License | ||
| * | ||
| * Copyright (c) 2018-2024 Falkreon (Isaac Ellingson) | ||
| * | ||
| * Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| * of this software and associated documentation files (the "Software"), to deal | ||
| * in the Software without restriction, including without limitation the rights | ||
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| * copies of the Software, and to permit persons to whom the Software is | ||
| * furnished to do so, subject to the following conditions: | ||
| * | ||
| * The above copyright notice and this permission notice shall be included in all | ||
| * copies or substantial portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| * SOFTWARE. | ||
| */ | ||
|
|
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| package blue.endless.jankson.api.io; | ||
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| import java.io.IOException; | ||
| import java.util.Iterator; | ||
| import java.util.Map; | ||
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| import blue.endless.jankson.api.document.ArrayElement; | ||
| import blue.endless.jankson.api.document.ObjectElement; | ||
| import blue.endless.jankson.api.document.PrimitiveElement; | ||
| import blue.endless.jankson.api.document.ValueElement; | ||
| import blue.endless.jankson.impl.io.StructuredDataBuffer; | ||
| import blue.endless.jankson.impl.io.objectreader.DelegatingStructuredDataReader; | ||
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| public class ValueElementReader { | ||
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| private ValueElementReader() {} | ||
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| public static StructuredDataReader of(ValueElement val) { | ||
| if (val instanceof PrimitiveElement primitive) { | ||
| StructuredDataBuffer buf = new StructuredDataBuffer(); | ||
| buf.write(StructuredData.primitive(primitive)); | ||
| return buf; | ||
| } else if (val instanceof ArrayElement array) { | ||
| return new ArrayValueReader(array); | ||
| } else if (val instanceof ObjectElement object) { | ||
| return new ObjectValueReader(object); | ||
| } else { | ||
| throw new IllegalArgumentException("Unknown element type"); | ||
| } | ||
| } | ||
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| private static class ArrayValueReader extends DelegatingStructuredDataReader { | ||
| private final Iterator<ValueElement> iterator; | ||
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| public ArrayValueReader(ArrayElement value) { | ||
| this.iterator = value.iterator(); | ||
| } | ||
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| @Override | ||
| protected void onDelegateEmpty() throws IOException { | ||
| if (iterator.hasNext()) { | ||
| ValueElement cur = iterator.next(); | ||
| setDelegate(of(cur)); | ||
| } else { | ||
| buffer(StructuredData.EOF); | ||
| } | ||
| } | ||
| } | ||
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| private static class ObjectValueReader extends DelegatingStructuredDataReader { | ||
| private final Iterator<Map.Entry<String, ValueElement>> iterator; | ||
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| public ObjectValueReader(ObjectElement value) { | ||
| iterator = value.entrySet().iterator(); | ||
| } | ||
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| @Override | ||
| protected void onDelegateEmpty() throws IOException { | ||
| if (iterator.hasNext()) { | ||
| Map.Entry<String, ValueElement> entry = iterator.next(); | ||
| buffer(StructuredData.objectKey(entry.getKey())); | ||
| setDelegate(ValueElementReader.of(entry.getValue())); | ||
| } else { | ||
| buffer(StructuredData.EOF); | ||
| } | ||
| } | ||
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| } | ||
| } |
94 changes: 94 additions & 0 deletions
94
src/main/java/blue/endless/jankson/api/serializer/ObjectReaderFactory.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,94 @@ | ||
| /* | ||
| * MIT License | ||
| * | ||
| * Copyright (c) 2018-2024 Falkreon (Isaac Ellingson) | ||
| * | ||
| * Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| * of this software and associated documentation files (the "Software"), to deal | ||
| * in the Software without restriction, including without limitation the rights | ||
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| * copies of the Software, and to permit persons to whom the Software is | ||
| * furnished to do so, subject to the following conditions: | ||
| * | ||
| * The above copyright notice and this permission notice shall be included in all | ||
| * copies or substantial portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| * SOFTWARE. | ||
| */ | ||
|
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| package blue.endless.jankson.api.serializer; | ||
|
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| import java.lang.reflect.AnnotatedType; | ||
| import java.lang.reflect.Type; | ||
| import java.util.HashMap; | ||
| import java.util.Map; | ||
| import java.util.function.Function; | ||
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| import blue.endless.jankson.api.document.ValueElement; | ||
| import blue.endless.jankson.api.io.StructuredDataReader; | ||
| import blue.endless.jankson.api.io.ValueElementReader; | ||
| import blue.endless.jankson.impl.io.objectreader.ObjectStructuredDataReader; | ||
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| public class ObjectReaderFactory { | ||
| private Map<Type, Function<Object, StructuredDataReader>> functionMap = new HashMap<>(); | ||
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| /** | ||
| * Registers a "classic" serializer for the specified type. | ||
| * @param <T> The type the serializer will apply to | ||
| * @param type The class the serializer will apply to | ||
| * @param function A function that will receive an object of the specified type, and produce a | ||
| * ValueElement representing it. | ||
| */ | ||
| @SuppressWarnings("unchecked") | ||
| public <T> void register(final Class<T> type, final Function<T, ValueElement> function) { | ||
| register((Type) type, (Function<Object, ValueElement>) function); | ||
| } | ||
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| /** | ||
| * Registers a "classic" serializer for the specified type | ||
| * @param type The type to specify a serializer for | ||
| * @param function A function which will receive an object of the specified type, and produce a | ||
| * ValueElement representing it. | ||
| */ | ||
| public void register(final Type type, final Function<Object, ValueElement> function) { | ||
| Function<Object, StructuredDataReader> supplier = (Object obj) -> ValueElementReader.of(function.apply(obj)); | ||
| functionMap.put(type, supplier); | ||
| } | ||
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| /** | ||
| * Gets a reader which will provide a StructuredData representation of the provided object | ||
| * @param <T> The type of the object being serialized / read | ||
| * @param type The class of the object being serialized / read | ||
| * @param objectOfType The object being serialized / read | ||
| * @return A StructuredDataReader which will provide data representing the object | ||
| */ | ||
| public <T> StructuredDataReader getReader(final Class<T> type, final T objectOfType) { | ||
| return getReader((Type) type, objectOfType); | ||
| } | ||
|
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| /** | ||
| * Gets a reader which will provide a StructuredData representation of the provided object | ||
| * @param type The type of the object being serialized / read | ||
| * @param objectOfType The object being serialized / read | ||
| * @return A StructuredDataReader which will provide data representing the object | ||
| */ | ||
| public StructuredDataReader getReader(Type type, final Object objectOfType) { | ||
| // Strip annotations - we don't want to differentiate between String and @Nullable String. | ||
| if (type instanceof AnnotatedType annoType) { | ||
| type = annoType.getType(); | ||
| } | ||
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| Function<Object, StructuredDataReader> function = functionMap.get(type); | ||
| return (function == null) ? | ||
| ObjectStructuredDataReader.of(objectOfType) : | ||
| function.apply(objectOfType); | ||
| } | ||
| } |
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