Split TypedRemapper::create up

Signed-off-by: Graham <gpe@openrs2.dev>

deob/src/main/java/dev/openrs2/deob/remap/ClassMappingGenerator.kt

@@ -0,0 +1,64 @@
+package dev.openrs2.deob.remap
+
+import dev.openrs2.asm.classpath.ClassMetadata
+import dev.openrs2.asm.classpath.ClassPath
+import dev.openrs2.asm.filter.ClassFilter
+import org.objectweb.asm.Opcodes
+
+class ClassMappingGenerator(
+    private val classPath: ClassPath,
+    private val excludedClasses: ClassFilter
+) {
+    private val nameGenerator = NameGenerator()
+    private val mapping = mutableMapOf<String, String>()
+
+    fun generate(): Map<String, String> {
+        for (clazz in classPath.libraryClasses) {
+            populateMapping(clazz)
+        }
+        return mapping
+    }
+
+    private fun populateMapping(clazz: ClassMetadata): String {
+        val name = clazz.name
+        if (mapping.containsKey(name) || !isRenamable(clazz)) {
+            return mapping.getOrDefault(name, name)
+        }
+
+        val mappedName = generateName(clazz)
+        mapping[name] = mappedName
+        return mappedName
+    }
+
+    private fun isRenamable(clazz: ClassMetadata): Boolean {
+        if (excludedClasses.matches(clazz.name) || clazz.dependency) {
+            return false
+        }
+
+        for (method in clazz.methods) {
+            if (clazz.getMethodAccess(method)!! and Opcodes.ACC_NATIVE != 0) {
+                return false
+            }
+        }
+
+        return true
+    }
+
+    private fun generateName(clazz: ClassMetadata): String {
+        val name = clazz.name
+        var mappedName = name.substring(0, name.lastIndexOf('/') + 1)
+
+        val superClass = clazz.superClass
+        if (superClass != null && superClass.name != "java/lang/Object") {
+            var superName = populateMapping(superClass)
+            superName = superName.substring(superName.lastIndexOf('/') + 1)
+            mappedName += nameGenerator.generate(superName + "_Sub")
+        } else if (clazz.`interface`) {
+            mappedName += nameGenerator.generate("Interface")
+        } else {
+            mappedName += nameGenerator.generate("Class")
+        }
+
+        return mappedName
+    }
+}

deob/src/main/java/dev/openrs2/deob/remap/FieldMappingGenerator.kt

@@ -0,0 +1,71 @@
+package dev.openrs2.deob.remap
+
+import dev.openrs2.asm.MemberRef
+import dev.openrs2.asm.classpath.ClassPath
+import dev.openrs2.asm.filter.MemberFilter
+import dev.openrs2.util.collect.DisjointSet
+import dev.openrs2.util.indefiniteArticle
+import org.objectweb.asm.Type
+
+class FieldMappingGenerator(
+    private val classPath: ClassPath,
+    private val excludedFields: MemberFilter,
+    private val classMapping: Map<String, String>
+) {
+    private val inheritedFieldSets = classPath.createInheritedFieldSets()
+    private val nameGenerator = NameGenerator()
+    private val mapping = mutableMapOf<MemberRef, String>()
+
+    fun generate(): Map<MemberRef, String> {
+        for (partition in inheritedFieldSets) {
+            if (!isRenamable(partition)) {
+                continue
+            }
+
+            val type = Type.getType(partition.first().desc)
+            val mappedName = generateName(type)
+            for (field in partition) {
+                mapping[field] = mappedName
+            }
+        }
+
+        return mapping
+    }
+
+    private fun isRenamable(partition: DisjointSet.Partition<MemberRef>): Boolean {
+        for (field in partition) {
+            val clazz = classPath[field.owner]!!
+
+            if (excludedFields.matches(field) || clazz.dependency) {
+                return false
+            }
+        }
+
+        return true
+    }
+
+    private fun generateName(type: Type): String {
+        val dimensions: String
+        val elementType: Type
+        if (type.sort == Type.ARRAY) {
+            dimensions = "Array".repeat(type.dimensions)
+            elementType = type.elementType
+        } else {
+            dimensions = ""
+            elementType = type
+        }
+
+        val prefix = when (elementType.sort) {
+            Type.BOOLEAN, Type.BYTE, Type.CHAR, Type.SHORT, Type.INT, Type.LONG, Type.FLOAT, Type.DOUBLE -> {
+                elementType.className + dimensions
+            }
+            Type.OBJECT -> {
+                val className = classMapping.getOrDefault(elementType.internalName, elementType.internalName)
+                className.substring(className.lastIndexOf('/') + 1) + dimensions
+            }
+            else -> throw IllegalArgumentException("Unknown field type $elementType")
+        }
+
+        return nameGenerator.generate(prefix.indefiniteArticle() + prefix.capitalize())
+    }
+}

deob/src/main/java/dev/openrs2/deob/remap/MethodMappingGenerator.kt

@@ -0,0 +1,58 @@
+package dev.openrs2.deob.remap
+
+import dev.openrs2.asm.MemberDesc
+import dev.openrs2.asm.MemberRef
+import dev.openrs2.asm.classpath.ClassPath
+import dev.openrs2.asm.filter.MemberFilter
+import dev.openrs2.util.collect.DisjointSet
+import org.objectweb.asm.Opcodes
+
+class MethodMappingGenerator(
+    private val classPath: ClassPath,
+    private val excludedMethods: MemberFilter
+) {
+    private val inheritedMethodSets = classPath.createInheritedMethodSets()
+    private var index = 0
+
+    fun generate(): Map<MemberRef, String> {
+        val mapping = mutableMapOf<MemberRef, String>()
+
+        for (partition in inheritedMethodSets) {
+            @Suppress("DEPRECATION")
+            if (!isRenamable(classPath, excludedMethods, partition)) {
+                continue
+            }
+
+            val mappedName = "method" + ++index
+            for (method in partition) {
+                mapping[method] = mappedName
+            }
+        }
+
+        return mapping
+    }
+
+    companion object {
+        @Deprecated("No replacement yet")
+        fun isRenamable(
+            classPath: ClassPath,
+            excludedMethods: MemberFilter,
+            partition: DisjointSet.Partition<MemberRef>
+        ): Boolean {
+            for (method in partition) {
+                val clazz = classPath[method.owner]!!
+
+                if (excludedMethods.matches(method) || clazz.dependency) {
+                    return false
+                }
+
+                val access = clazz.getMethodAccess(MemberDesc(method))
+                if (access != null && access and Opcodes.ACC_NATIVE != 0) {
+                    return false
+                }
+            }
+
+            return true
+        }
+    }
+}

deob/src/main/java/dev/openrs2/deob/remap/NameGenerator.kt

@@ -0,0 +1,19 @@
+package dev.openrs2.deob.remap
+
+class NameGenerator {
+    private val prefixes = mutableMapOf<String, Int>()
+
+    fun generate(prefix: String): String {
+        require(prefix.isNotEmpty())
+
+        val separator = if (prefix.last().isDigit()) {
+            "_"
+        } else {
+            ""
+        }
+
+        val index = prefixes.merge(prefix, 1, Integer::sum)
+
+        return prefix + separator + index
+    }
+}

deob/src/main/java/dev/openrs2/deob/remap/TypedRemapper.kt

@@ -1,18 +1,10 @@
 package dev.openrs2.deob.remap
 
 import com.github.michaelbull.logging.InlineLogger
-import dev.openrs2.asm.MemberDesc
 import dev.openrs2.asm.MemberRef
-import dev.openrs2.asm.classpath.ClassMetadata
 import dev.openrs2.asm.classpath.ClassPath
 import dev.openrs2.asm.classpath.ExtendedRemapper
-import dev.openrs2.asm.filter.ClassFilter
-import dev.openrs2.asm.filter.MemberFilter
 import dev.openrs2.deob.Profile
-import dev.openrs2.util.collect.DisjointSet
-import dev.openrs2.util.indefiniteArticle
-import org.objectweb.asm.Opcodes
-import org.objectweb.asm.Type
 
 class TypedRemapper private constructor(
     private val classes: Map<String, String>,
@@ -37,12 +29,9 @@ class TypedRemapper private constructor(
         private val LIBRARY_PREFIX_REGEX = Regex("^(?:loader|unpackclass)_")
 
         fun create(classPath: ClassPath, profile: Profile): TypedRemapper {
-            val inheritedFieldSets = classPath.createInheritedFieldSets()
-            val inheritedMethodSets = classPath.createInheritedMethodSets()
-
-            val classes = createClassMapping(classPath, profile.excludedClasses)
-            val fields = createFieldMapping(classPath, profile.excludedFields, inheritedFieldSets, classes)
-            val methods = createMethodMapping(classPath, profile.excludedMethods, inheritedMethodSets)
+            val classes = ClassMappingGenerator(classPath, profile.excludedClasses).generate()
+            val fields = FieldMappingGenerator(classPath, profile.excludedFields, classes).generate()
+            val methods = MethodMappingGenerator(classPath, profile.excludedMethods).generate()
 
             verifyMapping(classes, profile.maxObfuscatedNameLen)
             verifyMemberMapping(fields, profile.maxObfuscatedNameLen)
@@ -69,188 +58,5 @@ class TypedRemapper private constructor(
                 logger.warn { "Remapping probably unobfuscated name $originalName to $mappedName" }
             }
         }
-
-        private fun generateName(prefixes: MutableMap<String, Int>, prefix: String): String {
-            val separator = if (prefix.last().isDigit()) {
-                "_"
-            } else {
-                ""
-            }
-            return prefix + separator + prefixes.merge(prefix, 1, Integer::sum)
-        }
-
-        private fun createClassMapping(classPath: ClassPath, excludedClasses: ClassFilter): Map<String, String> {
-            val mapping = mutableMapOf<String, String>()
-            val prefixes = mutableMapOf<String, Int>()
-            for (clazz in classPath.libraryClasses) {
-                populateClassMapping(excludedClasses, mapping, prefixes, clazz)
-            }
-            return mapping
-        }
-
-        private fun populateClassMapping(
-            excludedClasses: ClassFilter,
-            mapping: MutableMap<String, String>,
-            prefixes: MutableMap<String, Int>,
-            clazz: ClassMetadata
-        ): String {
-            val name = clazz.name
-            if (mapping.containsKey(name) || !isClassRenamable(clazz, excludedClasses)) {
-                return mapping.getOrDefault(name, name)
-            }
-
-            val mappedName = generateClassName(excludedClasses, mapping, prefixes, clazz)
-            mapping[name] = mappedName
-            return mappedName
-        }
-
-        private fun isClassRenamable(clazz: ClassMetadata, excludedClasses: ClassFilter): Boolean {
-            if (excludedClasses.matches(clazz.name) || clazz.dependency) {
-                return false
-            }
-
-            for (method in clazz.methods) {
-                if (clazz.getMethodAccess(method)!! and Opcodes.ACC_NATIVE != 0) {
-                    return false
-                }
-            }
-
-            return true
-        }
-
-        private fun generateClassName(
-            excludedClasses: ClassFilter,
-            mapping: MutableMap<String, String>,
-            prefixes: MutableMap<String, Int>,
-            clazz: ClassMetadata
-        ): String {
-            val name = clazz.name
-            var mappedName = name.substring(0, name.lastIndexOf('/') + 1)
-
-            val superClass = clazz.superClass
-            if (superClass != null && superClass.name != "java/lang/Object") {
-                var superName = populateClassMapping(excludedClasses, mapping, prefixes, superClass)
-                superName = superName.substring(superName.lastIndexOf('/') + 1)
-                mappedName += generateName(prefixes, superName + "_Sub")
-            } else if (clazz.`interface`) {
-                mappedName += generateName(prefixes, "Interface")
-            } else {
-                mappedName += generateName(prefixes, "Class")
-            }
-
-            return mappedName
-        }
-
-        private fun createFieldMapping(
-            classPath: ClassPath,
-            excludedFields: MemberFilter,
-            disjointSet: DisjointSet<MemberRef>,
-            classMapping: Map<String, String>
-        ): Map<MemberRef, String> {
-            val mapping = mutableMapOf<MemberRef, String>()
-            val prefixes = mutableMapOf<String, Int>()
-
-            for (partition in disjointSet) {
-                if (!isFieldRenamable(classPath, excludedFields, partition)) {
-                    continue
-                }
-
-                val type = Type.getType(partition.first().desc)
-                val mappedName = generateFieldName(prefixes, classMapping, type)
-                for (field in partition) {
-                    mapping[field] = mappedName
-                }
-            }
-
-            return mapping
-        }
-
-        private fun isFieldRenamable(
-            classPath: ClassPath,
-            excludedFields: MemberFilter,
-            partition: DisjointSet.Partition<MemberRef>
-        ): Boolean {
-            for (field in partition) {
-                val clazz = classPath[field.owner]!!
-
-                if (excludedFields.matches(field) || clazz.dependency) {
-                    return false
-                }
-            }
-
-            return true
-        }
-
-        private fun generateFieldName(
-            prefixes: MutableMap<String, Int>,
-            classMapping: Map<String, String>,
-            type: Type
-        ): String {
-            val dimensions: String
-            val elementType: Type
-            if (type.sort == Type.ARRAY) {
-                dimensions = "Array".repeat(type.dimensions)
-                elementType = type.elementType
-            } else {
-                dimensions = ""
-                elementType = type
-            }
-
-            val prefix = when (elementType.sort) {
-                Type.BOOLEAN, Type.BYTE, Type.CHAR, Type.SHORT, Type.INT, Type.LONG, Type.FLOAT, Type.DOUBLE -> {
-                    elementType.className + dimensions
-                }
-                Type.OBJECT -> {
-                    val className = classMapping.getOrDefault(elementType.internalName, elementType.internalName)
-                    className.substring(className.lastIndexOf('/') + 1) + dimensions
-                }
-                else -> throw IllegalArgumentException("Unknown field type $elementType")
-            }
-
-            return generateName(prefixes, prefix.indefiniteArticle() + prefix.capitalize())
-        }
-
-        private fun createMethodMapping(
-            classPath: ClassPath,
-            excludedMethods: MemberFilter,
-            disjointSet: DisjointSet<MemberRef>
-        ): Map<MemberRef, String> {
-            val mapping = mutableMapOf<MemberRef, String>()
-            var id = 0
-
-            for (partition in disjointSet) {
-                if (!isMethodRenamable(classPath, excludedMethods, partition)) {
-                    continue
-                }
-
-                val mappedName = "method" + ++id
-                for (method in partition) {
-                    mapping[method] = mappedName
-                }
-            }
-
-            return mapping
-        }
-
-        fun isMethodRenamable(
-            classPath: ClassPath,
-            excludedMethods: MemberFilter,
-            partition: DisjointSet.Partition<MemberRef>
-        ): Boolean {
-            for (method in partition) {
-                val clazz = classPath[method.owner]!!
-
-                if (excludedMethods.matches(method) || clazz.dependency) {
-                    return false
-                }
-
-                val access = clazz.getMethodAccess(MemberDesc(method))
-                if (access != null && access and Opcodes.ACC_NATIVE != 0) {
-                    return false
-                }
-            }
-
-            return true
-        }
     }
 }

deob/src/main/java/dev/openrs2/deob/transform/UnusedArgTransformer.kt

@@ -11,7 +11,7 @@ import dev.openrs2.deob.ArgRef
 import dev.openrs2.deob.Profile
 import dev.openrs2.deob.analysis.ConstSourceInterpreter
 import dev.openrs2.deob.analysis.ConstSourceValue
-import dev.openrs2.deob.remap.TypedRemapper
+import dev.openrs2.deob.remap.MethodMappingGenerator
 import dev.openrs2.util.collect.DisjointSet
 import org.objectweb.asm.Opcodes
 import org.objectweb.asm.Type
@@ -75,7 +75,9 @@ class UnusedArgTransformer @Inject constructor(private val profile: Profile) : T
                     val invokePartition = inheritedMethodSets[MemberRef(insn)]
                     if (invokePartition == null) {
                         continue@frame
-                    } else if (!TypedRemapper.isMethodRenamable(classPath, profile.excludedMethods, invokePartition)) {
+                    } else if (
+                        !MethodMappingGenerator.isRenamable(classPath, profile.excludedMethods, invokePartition)
+                    ) {
                         continue@frame
                     }
 
@@ -119,7 +121,9 @@ class UnusedArgTransformer @Inject constructor(private val profile: Profile) : T
             }
 
             val partition = inheritedMethodSets[MemberRef(insn)]
-            if (partition == null || !TypedRemapper.isMethodRenamable(classPath, profile.excludedMethods, partition)) {
+            if (partition == null) {
+                continue
+            } else if (!MethodMappingGenerator.isRenamable(classPath, profile.excludedMethods, partition)) {
                 continue
             }
 
@@ -152,7 +156,7 @@ class UnusedArgTransformer @Inject constructor(private val profile: Profile) : T
     ): Boolean {
         // delete unused int args from the method itself
         val partition = inheritedMethodSets[MemberRef(clazz, method)]!!
-        if (!TypedRemapper.isMethodRenamable(classPath, profile.excludedMethods, partition)) {
+        if (!MethodMappingGenerator.isRenamable(classPath, profile.excludedMethods, partition)) {
             return false
         }