Java tutorial
/* * Copyright (c) 2015, Minecrell <https://github.com/Minecrell> * * 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. */ package net.minecrell.workbench.tools.mapping; import com.google.common.base.MoreObjects; import com.google.common.collect.ImmutableBiMap; import com.google.common.collect.ImmutableMap; import net.minecrell.workbench.tools.mapping.name.BaseName; import net.minecrell.workbench.tools.mapping.name.ClassName; import net.minecrell.workbench.tools.mapping.name.FieldName; import net.minecrell.workbench.tools.mapping.name.MethodName; import net.minecrell.workbench.tools.mapping.name.Name; import net.minecrell.workbench.tools.mapping.name.NameContext; import java.util.Objects; import java.util.function.Consumer; public final class BaseMappings implements Mappings { private final NameContext context; private final ImmutableMap<String, BaseName> fields; private final ImmutableMap<String, BaseName> methods; private final ImmutableMap<String, String> parameters; public BaseMappings(NameContext context, ImmutableMap<String, BaseName> fields, ImmutableMap<String, BaseName> methods, ImmutableMap<String, String> parameters) { this.context = context; this.fields = fields; this.methods = methods; this.parameters = parameters; } @Override public NameContext getContext() { return context; } @Override public ClassName mapClass(String name) { return context.getClass(name); } @Override public ClassName map(ClassName mapping) { return mapping; } @Override public FieldName map(FieldName mapping) { BaseName field = fields.get(mapping.getName()); if (field != null) { return mapping.apply(context, field); } else { return mapping; } } @Override public MethodName map(MethodName mapping) { BaseName method = methods.get(mapping.getName()); if (method != null) { return mapping.apply(context, method); } else { return mapping; } } private void applyParameters(MethodName m) { if (m.hasParameters()) { String[] parameters = m.getParameters(); for (int i = 0; i < parameters.length; i++) { String name = this.parameters.get(parameters[i]); if (name != null) { parameters[i] = name; } } } } public ClassMappings apply(ClassMappings mappings) { return new ClassMappings(context, ImmutableBiMap.of(), apply(mappings.getFields(), this.fields, null), apply(mappings.getMethods(), this.methods, this::applyParameters)); } @SuppressWarnings("unchecked") private <T extends Name> ImmutableBiMap<T, T> apply(ImmutableBiMap<T, T> mappings, ImmutableMap<String, BaseName> base, Consumer<T> consumer) { ImmutableBiMap.Builder<T, T> builder = ImmutableBiMap.builder(); mappings.forEach((original, mapped) -> { BaseName name = base.get(original.getName()); if (name != null) { T result = (T) original.apply(context, name); if (consumer != null) { consumer.accept(result); } builder.put(original, result); } }); return builder.build(); } public ClassMappings applyMapped(ClassMappings mappings) { return new ClassMappings(context, mappings.getClasses(), applyMapped(mappings.getFields(), this.fields, null), applyMapped(mappings.getMethods(), this.methods, this::applyParameters)); } @SuppressWarnings("unchecked") private <T extends Name> ImmutableBiMap<T, T> applyMapped(ImmutableBiMap<T, T> mappings, ImmutableMap<String, BaseName> base, Consumer<T> consumer) { ImmutableBiMap.Builder<T, T> builder = ImmutableBiMap.builder(); mappings.forEach((original, mapped) -> { BaseName name = base.get(mapped.getName()); if (name != null) { T result = (T) mapped.apply(context, name); if (consumer != null) { consumer.accept(result); } builder.put(original, result); } else { builder.put(original, mapped); } }); return builder.build(); } @Override public boolean equals(Object o) { if (this == o) { return true; } if (!(o instanceof BaseMappings)) { return false; } BaseMappings that = (BaseMappings) o; return Objects.equals(fields, that.fields) && Objects.equals(methods, that.methods) && Objects.equals(parameters, that.parameters); } @Override public int hashCode() { return Objects.hash(fields, methods, parameters); } @Override public String toString() { return MoreObjects.toStringHelper(this).add("fields", fields).add("methods", methods) .add("parameters", parameters).toString(); } public static Builder builder(NameContext context) { return new Builder(context); } public static final class Builder { private final NameContext context; private final ImmutableMap.Builder<String, BaseName> fields = ImmutableMap.builder(); private final ImmutableMap.Builder<String, BaseName> methods = ImmutableMap.builder(); private final ImmutableMap.Builder<String, String> parameters = ImmutableMap.builder(); public Builder(NameContext context) { this.context = context; } public NameContext getContext() { return context; } public ImmutableMap.Builder<String, BaseName> getFields() { return fields; } public ImmutableMap.Builder<String, BaseName> getMethods() { return methods; } public ImmutableMap.Builder<String, String> getParameters() { return parameters; } public void addField(String original, BaseName mapped) { fields.put(original, mapped); } public void addMethod(String original, BaseName mapped) { methods.put(original, mapped); } public void addParameter(String original, String mapped) { parameters.put(original, mapped); } public BaseMappings build() { return new BaseMappings(context, fields.build(), methods.build(), parameters.build()); } } }