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rewrite source remapper to use tiny-mappings-parser

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This commit is contained in:
Adrian Siekierka
2019-04-21 11:29:19 +02:00
parent ab9d2d3fda
commit bcae78333d
4 changed files with 52 additions and 101 deletions
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124
src/main/java/net/fabricmc/loom/util/SourceRemapper.java
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@@ -27,11 +27,13 @@ package net.fabricmc.loom.util;
import com.google.common.collect.ImmutableMap;
import net.fabricmc.loom.LoomGradleExtension;
import net.fabricmc.loom.providers.MappingsProvider;
import net.fabricmc.mappings.*;
import net.fabricmc.stitch.util.Pair;
import net.fabricmc.stitch.util.StitchUtil;
import org.cadixdev.lorenz.MappingSet;
import org.cadixdev.lorenz.io.MappingsReader;
import org.cadixdev.lorenz.io.TextMappingsReader;
import org.cadixdev.lorenz.model.Mapping;
import org.cadixdev.mercury.Mercury;
import org.cadixdev.mercury.remapper.MercuryRemapper;
import org.gradle.api.Project;
@@ -56,18 +58,13 @@ public class SourceRemapper {
}
private static void remapSourcesInner(Project project, File source, File destination, boolean toNamed) throws Exception {
LoomGradleExtension extension = project.getExtensions().getByType(LoomGradleExtension.class);
MappingsProvider mappingsProvider = extension.getMappingsProvider();
MappingSet mappings = extension.getOrCreateSrcMappingCache(toNamed ? 1 : 0, () -> {
try {
try (FileInputStream stream = new FileInputStream(mappingsProvider.MAPPINGS_TINY)) {
project.getLogger().lifecycle(":loading " + (toNamed ? "intermediary -> named" : "named -> intermediary") + " source mappings");
FileReader mappingsReader = new FileReader(mappingsProvider.MAPPINGS_TINY);
MappingSet mappingsOut = new TinyReader(mappingsReader, toNamed ? "intermediary" : "named", toNamed ? "named" : "intermediary").read();
mappingsReader.close();
return mappingsOut;
return new TinyReader(stream, toNamed ? "intermediary" : "named", toNamed ? "named" : "intermediary").read();
} catch (Exception e) {
throw new RuntimeException(e);
}
@@ -142,110 +139,41 @@ public class SourceRemapper {
}
}
static class SimpleClassMapper extends Remapper {
final Map<String, String> classMap;
public SimpleClassMapper(Map<String, String> map) {
this.classMap = map;
}
public String map(String typeName) {
return this.classMap.getOrDefault(typeName, typeName);
}
}
// With help from jamierocks; heavily modified
public static class TinyReader extends MappingsReader {
private final Reader reader;
private final String to;
private final String from;
private final InputStream stream;
private final String from, to;
private int toOffset = 0;
private int fromOffset = 1;
private int lineNumber = 0;
public TinyReader(Reader reader, String from, String to) {
this.reader = reader;
public TinyReader(InputStream stream, String from, String to) {
this.stream = stream;
this.from = from;
this.to = to;
}
//This looks at the first line of the tiny file and finds the column of the mappings, horrible but works.
public Pair<Integer, Integer> getMappingOffset(String to, String from, String line){
int toOffset = -1;
int fromOffset = -1;
String[] split = line.split("\t");
for (int i = 0; i < split.length; i++) {
String mapping = split[i];
if(mapping.equalsIgnoreCase(to)){
fromOffset = i -1;
}
if(mapping.equalsIgnoreCase(from)){
toOffset = i -1;
}
}
return Pair.of(toOffset, fromOffset);
}
@Override
public MappingSet read(final MappingSet mappings) throws IOException {
// As TinyV1 stores descriptors in obfuscated format always, we need to take a two-step approach.
Map<String, String> classNames = new HashMap<>();
List<String[]> otherNames = new ArrayList<>();
SimpleClassMapper classMapper = new SimpleClassMapper(classNames);
BufferedReader br = new BufferedReader(reader);
Mappings m = net.fabricmc.mappings.MappingsProvider.readTinyMappings(stream, false);
br.lines().forEach((line) -> {
final String[] params = line.split("\t");
if ((lineNumber++) == 0) {
if (params.length < 1) {
throw new RuntimeException("Invalid mapping file!");
} else if (params.length < 3 || !params[0].equals("v1")) {
throw new RuntimeException("Invalid mapping version: '" + params[0] + "'!");
}
for (ClassEntry entry : m.getClassEntries()) {
mappings.getOrCreateClassMapping(entry.get(from))
.setDeobfuscatedName(entry.get(to));
}
Pair<Integer, Integer> offset = getMappingOffset(to, from, line);
// System.out.println("To: " + to + " From: " + from + " toOffset:" + offset.getLeft() + " from:" + offset.getRight());
toOffset = offset.getLeft();
fromOffset = offset.getRight();
} else {
switch (params[0]) {
case "CLASS": {
mappings.getOrCreateClassMapping(params[1 + toOffset])
.setDeobfuscatedName(params[1 + fromOffset]);
classNames.put(params[1], params[1 + toOffset]);
// System.out.println("Class " + params[1 + toOffset] + " -> " + params[1 + fromOffset]);
return;
}
case "FIELD":
case "METHOD": {
otherNames.add(params);
return;
}
}
}
});
br.close();
for (FieldEntry entry : m.getFieldEntries()) {
EntryTriple fromEntry = entry.get(from);
EntryTriple toEntry = entry.get(to);
for (String[] params : otherNames) {
switch (params[0]) {
case "FIELD": {
mappings.getOrCreateClassMapping(classMapper.map(params[1]))
.getOrCreateFieldMapping(params[3 + toOffset], classMapper.mapDesc(params[2]))
.setDeobfuscatedName(params[3 + fromOffset]);
mappings.getOrCreateClassMapping(fromEntry.getOwner())
.getOrCreateFieldMapping(fromEntry.getName(), fromEntry.getDesc())
.setDeobfuscatedName(toEntry.getName());
}
// System.out.println("Field " + params[3 + toOffset] + classMapper.mapDesc(params[2]) + " -> " + params[3 + fromOffset]);
break;
}
case "METHOD": {
mappings.getOrCreateClassMapping(classMapper.map(params[1]))
.getOrCreateMethodMapping(params[3 + toOffset], classMapper.mapMethodDesc(params[2]))
.setDeobfuscatedName(params[3 + fromOffset]);
for (MethodEntry entry : m.getMethodEntries()) {
EntryTriple fromEntry = entry.get(from);
EntryTriple toEntry = entry.get(to);
// System.out.println("Method " + params[3 + toOffset] + classMapper.mapMethodDesc(params[2]) + " -> " + params[3 + fromOffset]);
break;
}
}
mappings.getOrCreateClassMapping(fromEntry.getOwner())
.getOrCreateMethodMapping(fromEntry.getName(), fromEntry.getDesc())
.setDeobfuscatedName(toEntry.getName());
}
return mappings;