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create MetaMapPreprocessor

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dfsek
2021-07-21 09:48:40 -07:00
parent 5c3cd73c03
commit d0434ef05e
1 changed files with 59 additions and 0 deletions
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common/implementation/src/main/java/com/dfsek/terra/config/preprocessor/MetaMapPreprocessor.java Normal file
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package com.dfsek.terra.config.preprocessor;
import com.dfsek.tectonic.config.Configuration;
import com.dfsek.tectonic.exception.LoadException;
import com.dfsek.tectonic.loading.ConfigLoader;
import com.dfsek.tectonic.preprocessor.Result;
import com.dfsek.terra.api.config.meta.Meta;
import com.dfsek.terra.api.util.reflection.TypeKey;
import org.jetbrains.annotations.NotNull;
import java.lang.reflect.AnnotatedType;
import java.lang.reflect.ParameterizedType;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class MetaMapPreprocessor extends MetaPreprocessor<Meta> {
public MetaMapPreprocessor(Map<String, Configuration> configs) {
super(configs);
}
private static final TypeKey<List<String>> STRING_LIST = new TypeKey<>() {};
@SuppressWarnings("unchecked")
@Override
public @NotNull <T> Result<T> process(AnnotatedType t, T c, ConfigLoader loader, Meta annotation) {
if(t.getType() instanceof ParameterizedType) {
ParameterizedType parameterizedType = (ParameterizedType) t.getType();
if(parameterizedType.getRawType() instanceof Class) { // Should always be true but we check anyways
Class<?> baseClass = (Class<?>) parameterizedType.getRawType();
if(Map.class.isAssignableFrom(baseClass) && c instanceof Map) { // List metaconfig
Map<Object, Object> map = (Map<Object, Object>) c;
Map<Object, Object> newMap = new HashMap<>(map);
if(map.containsKey("<<")) {
newMap.putAll(map);
newMap.remove("<<"); // Remove placeholder
List<String> keys = (List<String>) loader.loadType(STRING_LIST.getAnnotatedType(), map.get("<<"));
keys.forEach(key -> {
Object meta = getMetaValue(key);
if(!(meta instanceof Map)) {
throw new LoadException("MetaMap injection candidate must be list, is type " + meta.getClass().getCanonicalName());
}
newMap.putAll((Map<?, ?>) meta);
});
return (Result<T>) Result.overwrite(newMap);
}
}
}
}
return Result.noOp();
}
}