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chore: moved out SrgMapper

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zaaarf 2023-03-02 18:09:35 +01:00
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commit 054fec4150
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12
src/main/java/ftbsc/lll/exceptions/MappingNotFoundException.java
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@ -1,12 +0,0 @@
package ftbsc.lll.exceptions;
import ftbsc.lll.tools.SrgMapper;
/**
* Thrown upon failure to find the requested mapping within a loaded {@link SrgMapper}.
*/
public class MappingNotFoundException extends RuntimeException {
public MappingNotFoundException(String mapping) {
super("Could not find mapping for " + mapping + "!");
}
}

168
src/main/java/ftbsc/lll/tools/SrgMapper.java
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@ -1,168 +0,0 @@
package ftbsc.lll.tools;
import ftbsc.lll.exceptions.MappingNotFoundException;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.atomic.AtomicReference;
import java.util.stream.Stream;
/**
* Parses a .tsrg file into a mapper capable of converting from
* deobfuscated names to srg names.
* Obviously, it may only be used at runtime if the .tsrg file is
* included in the resources. However, in that case, I'd recommend
* using the built-in Forge one and refrain from including an extra
* resource for no good reason.
* @since 0.2.0
*/
public class SrgMapper {
/**
* A Map using the deobfuscated names as keys,
* holding information for that Srg class as value.
*/
private final Map<String, ObfuscationData> mapper = new HashMap<>();
/**
* The public constructor.
* Should be passed a {@link Stream} of Strings, one representing each line.
* Whether they contain line endings or not is irrelevant.
* @param str a {@link Stream} of strings
*/
public SrgMapper(Stream<String> str) {
AtomicReference<String> currentClass = new AtomicReference<>("");
str.forEach(l -> {
if(l.startsWith("\t"))
mapper.get(currentClass.get()).addMember(l);
else {
ObfuscationData s = new ObfuscationData(l);
currentClass.set(s.mcpName);
mapper.put(s.mcpName, s);
}
});
}
/**
* Gets the SRG-obfuscated name of the class.
* @param mcp the MCP (deobfuscated) internal name of the desired class
* @return the SRG name of the class
* @throws MappingNotFoundException if no mapping is found
*/
public String getSrgClass(String mcp) {
ObfuscationData data = mapper.get(mcp);
if(data == null)
throw new MappingNotFoundException(mcp);
else return data.srgName;
}
/**
* Gets the SRG-obfuscated name of a class member (field or method).
* The method signature must be in this format: "methodName methodDescriptor",
* with a space, because that's how it is in .tsrg files.
* @param mcpClass the MCP (deobfuscated) internal name of the container class
* @param member the field name or method signature
* @return the SRG name of the given member
* @throws MappingNotFoundException if no mapping is found
*/
public String getSrgMember(String mcpClass, String member) {
ObfuscationData data = mapper.get(mcpClass);
if(data == null)
throw new MappingNotFoundException(mcpClass + "::" + member);
return data.members.get(member);
}
/**
* Used internally. Gets the obfuscation data corresponding to the given SRG name.
* @return the desired {@link ObfuscationData} object
* @throws MappingNotFoundException if no {@link ObfuscationData} object is found
*/
private ObfuscationData getObfuscationData(String srg) {
for(ObfuscationData s : mapper.values())
if(s.srgName.equals(srg))
return s;
throw new MappingNotFoundException(srg);
}
/**
* Gets the MCP (deobfuscated) name of the class.
* Due to how it's implemented, it's considerably less efficient than its
* opposite operation.
* @param srg the SRG-obfuscated internal name of the desired class
* @return the MCP name of the class
*/
public String getMcpClass(String srg) {
ObfuscationData data = getObfuscationData(srg);
return data.mcpName;
}
/**
* Gets the MCP (deobfuscated) name of the given member.
* Due to how it's implemented, it's considerably less efficient than its
* opposite operation.
* @param srgClass the SRG-obfuscated internal name of the container class
* @param member the field name or method signature
* @return the MCP name of the given member
*/
public String getMcpMember(String srgClass, String member) {
ObfuscationData data = getObfuscationData(srgClass);
for(String mcp : data.members.keySet())
if(data.members.get(mcp).equals(member))
return mcp;
return null;
}
/**
* Private class used internally for storing information about each
* class. It's private because there is no good reason anyone would
* want to access this outside of this class.
*/
private static class ObfuscationData {
/**
* The MCP internal name (FQN with '/' instad of '.') of the class.
*/
private final String mcpName;
/**
* The SRG internal name (FQN with '/' instad of '.') of the class.
*/
private final String srgName;
/**
* A {@link Map} tying each member's deobfuscatede name or signature to its
* SRG name.
*/
private final Map<String, String> members;
/**
* The constructor. It takes in the line where the class is declared,
* which looks something like this:
* {@code internal/name/mcp internal/name/srg }
* @param s the String represeting the declaration line
*/
private ObfuscationData(String s) {
String[] split = s.trim().split(" ");
this.mcpName = split[0];
this.srgName = split[1];
this.members = new HashMap<>();
}
/**
* Adds a member to the target class. It takes in the line where the
* member is declared.
* For fields it looks like this:
* {@code fieldMcpName field_srg_name}
* For methods it looks like this:
* {@code methodName methodDescriptor method_srg_name}
* @param s the String representing the declaration line
*/
public void addMember(String s) {
String[] split = s.trim().split(" ");
if(split.length == 2) //field
members.put(split[0], split[1]);
else if (split.length == 3) //method
members.put(split[0] + " " + split[1], split[2]);
}
}
}