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feat: srg mapper
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131
src/main/java/ftbsc/lll/mapper/impl/SRGMapper.java
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131
src/main/java/ftbsc/lll/mapper/impl/SRGMapper.java
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package ftbsc.lll.mapper.impl;
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import com.google.auto.service.AutoService;
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import ftbsc.lll.exceptions.MalformedMappingsException;
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import ftbsc.lll.mapper.AbstractMapper;
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import ftbsc.lll.mapper.IMapper;
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import ftbsc.lll.mapper.tools.data.ClassData;
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import java.util.List;
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/**
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* A {@link IMapper} capable of parsing SRG files.
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*/
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@AutoService(IMapper.class)
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public class SRGMapper extends AbstractMapper {
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/**
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* Checks whether this mapper can process the given lines.
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* @param lines the lines to read
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* @return whether this type of mapper can process these lines
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*/
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@Override
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public boolean claim(List<String> lines) {
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String[] firstLineTokens = lines.get(0).trim().split(" ");
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return firstLineTokens.length <= 5 &&
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(firstLineTokens[0].equals("CL:")
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|| firstLineTokens[0].equals("MD:")
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|| firstLineTokens[0].equals("FD:"));
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}
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/**
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* Populates the {@link IMapper} given the lines, ignoring errors depending on the
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* given ignoreErrors flag.
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* @param lines the lines to read
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* @param ignoreErrors try to ignore errors and keep going
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* @throws MalformedMappingsException if an error is encountered and ignoreErrors is false
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*/
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@Override
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public void populate(List<String> lines, boolean ignoreErrors) throws MalformedMappingsException {
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for(int i = 0; i < lines.size(); i++) {
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String[] tokens = lines.get(i).trim().split(" ");
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switch(tokens[0]) {
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case "CL:":
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if(tokens.length != 3)
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break;
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this.registerClass(tokens[1], tokens[2]);
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continue;
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case "MD:":
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case "FD:":
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if(this.processMemberTokens(tokens))
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continue;
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break;
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}
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if(!ignoreErrors)
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throw new MalformedMappingsException(i, "wrong number of space-separated tokens");
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}
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}
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/**
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* Processes a line, broken up into tokens.
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* @param tokens the tokens
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* @return whether it was a valid mapping
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*/
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private boolean processMemberTokens(String[] tokens) {
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boolean field;
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if(tokens[0].equals("MD:")) {
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if(tokens.length != 5)
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return false;
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field = false;
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} else if(tokens[0].equals("FD:")) {
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if(tokens.length != 3)
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return false;
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field = true;
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} else return false;
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//process parent
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String[] split = tokens[1].split("/");
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String memberName = split[split.length - 1];
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String parent = tokens[1].substring(0, tokens[1].length() - split[split.length - 1].length() - 1);
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int obfPosition = field ? 2 : 3;
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split = tokens[obfPosition].split("/");
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String memberNameObf = split[split.length - 1];
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String parentObf = tokens[obfPosition].substring(0, tokens[obfPosition].length() - split[split.length - 1].length() - 1);
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if(field) this.registerMember(parent, parentObf, memberName, memberNameObf, null, null);
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else this.registerMember(parent, parentObf, memberName, memberNameObf, tokens[2], tokens[4]);
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return true;
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}
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/**
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* This does nothing as it is never called for this type of mapper.
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* @param lines the lines to read
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* @param ignoreErrors try to ignore errors and keep going
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*/
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@Override
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protected void processLines(List<String> lines, boolean ignoreErrors) {}
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/**
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* Registers a class in the mapper, if it isn't already.
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* @param name the name
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* @param nameMapped the mapped name
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*/
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private void registerClass(String name, String nameMapped) {
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if(this.mappings.containsKey(name))
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return;
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this.mappings.put(name, new ClassData(name, nameMapped));
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this.mappingsInverted.put(nameMapped, new ClassData(nameMapped, name));
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}
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/**
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* Registers a class member. The descriptors should be null for fields.
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* @param parent the parent's plain internal name
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* @param parentMapped the parent's mapped internal name
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* @param name the member's plain name
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* @param nameMapped the member's mapped name
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* @param descriptor the member's plain descriptor, may be null
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* @param descriptorMapped the member's mapped descriptor, may be null
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*/
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private void registerMember(String parent, String parentMapped, String name, String nameMapped,
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String descriptor, String descriptorMapped) {
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this.registerClass(parent, parentMapped);
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ClassData data = this.mappings.get(parent);
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ClassData dataReverse = this.mappings.get(data.nameMapped);
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if(descriptor == null || descriptorMapped == null) {
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//field
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data.addField(name, nameMapped);
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dataReverse.addField(nameMapped, name);
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} else {
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//method
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data.addMethod(name, nameMapped, descriptor);
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dataReverse.addMethod(nameMapped, name, descriptorMapped);
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}
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}
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}
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