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clean up the chunk provider patcher

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FalsePattern committed 2022-07-18 21:45:51 +02:00
1 parent 9ef1b8fabb
commit 6272dd6929
1 file changed
+52 -66
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src/main/java/com/falsepattern/endlessids/asm/transformer/ChunkProviderSuperPatcher.java
+52 -66
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@@ -37,7 +37,7 @@ public class ChunkProviderSuperPatcher implements IClassNodeTransformer {
private static final String GET_BIOME_ARRAY_METHOD = IETransformer.isObfuscated ? "func_76605_m" : "getBiomeArray";
private static final Map<Integer, BiFunction<AbstractInsnNode, Memory, Integer>> STATES = new HashMap<>();
static {
STATES.put(0, casting(VarInsnNode.class, 0, (insn, memory) -> {
STATES.put(0, casting(VarInsnNode.class, (insn, memory) -> {
if (insn.getOpcode() == Opcodes.ALOAD) {
memory.chunkIndex = insn.var;
memory.startingInsn = memory.currentInsn;
@@ -45,7 +45,7 @@ public class ChunkProviderSuperPatcher implements IClassNodeTransformer {
}
return 0;
}));
STATES.put(1, casting(MethodInsnNode.class, 0, (insn, memory) -> {
STATES.put(1, casting(MethodInsnNode.class, (insn, memory) -> {
if (insn.getOpcode() == Opcodes.INVOKEVIRTUAL &&
insn.owner.equals(CHUNK_CLASS) &&
insn.name.equals(GET_BIOME_ARRAY_METHOD) &&
@@ -55,33 +55,31 @@ public class ChunkProviderSuperPatcher implements IClassNodeTransformer {
}
return 0;
}));
STATES.put(2, casting(VarInsnNode.class, 0, (insn, memory) -> {
STATES.put(2, casting(VarInsnNode.class, (insn, memory) -> {
if (insn.getOpcode() == Opcodes.ASTORE) {
memory.biomeArrayIndex = insn.var;
return 3;
}
return 0;
}));
STATES.put(3, casting(LabelNode.class, 0, 4));
STATES.put(4, casting(InsnNode.class, 0, (insn) -> insn.getOpcode() == Opcodes.ICONST_0 ? 5 : 0));
STATES.put(5, casting(VarInsnNode.class, 0, (insn, memory) -> {
STATES.put(3, casting(LabelNode.class, 4));
STATES.put(4, casting(InsnNode.class, (insn) ->
insn.getOpcode() == Opcodes.ICONST_0
? 5 : 0));
STATES.put(5, casting(VarInsnNode.class, (insn, memory) -> {
if (insn.getOpcode() == Opcodes.ISTORE) {
memory.iteratorIndex = insn.var;
return 6;
}
return 0;
}));
STATES.put(6, casting(LabelNode.class, 0, 7));
STATES.put(7, casting(FrameNode.class, 0, (insn, memory) -> {
//validate chunk, chunk array, and iterator
if (memory.locals.get(memory.chunkIndex).equals(CHUNK_CLASS) &&
STATES.put(6, casting(LabelNode.class, 7));
STATES.put(7, casting(FrameNode.class, (insn, memory) ->
memory.locals.get(memory.chunkIndex).equals(CHUNK_CLASS) &&
memory.locals.get(memory.biomeArrayIndex).equals("[B") &&
memory.locals.get(memory.iteratorIndex).equals(1)) {
return 8;
}
return 0;
}));
STATES.put(8, casting(VarInsnNode.class, 0, (insn, memory) -> {
memory.locals.get(memory.iteratorIndex).equals(1)
? 8 : 0));
STATES.put(8, casting(VarInsnNode.class, (insn, memory) -> {
if (insn.getOpcode() == Opcodes.ILOAD &&
insn.var == memory.iteratorIndex) {
memory.tmp = 1;
@@ -94,7 +92,7 @@ public class ChunkProviderSuperPatcher implements IClassNodeTransformer {
memory.tmp = 0;
return 0;
}));
STATES.put(9, casting(VarInsnNode.class, 0, (insn, memory) -> {
STATES.put(9, casting(VarInsnNode.class, (insn, memory) -> {
if (memory.tmp == 1) {
if (insn.getOpcode() == Opcodes.ALOAD &&
insn.var == memory.biomeArrayIndex) {
@@ -109,7 +107,7 @@ public class ChunkProviderSuperPatcher implements IClassNodeTransformer {
memory.tmp = 0;
return 0;
}));
STATES.put(10, casting(InsnNode.class, 0, (insn, memory) -> {
STATES.put(10, casting(InsnNode.class, (insn, memory) -> {
if (insn.getOpcode() == Opcodes.ARRAYLENGTH) {
if (memory.tmp == 1) {
return 11;
@@ -120,7 +118,7 @@ public class ChunkProviderSuperPatcher implements IClassNodeTransformer {
memory.tmp = 0;
return 0;
}));
STATES.put(11, casting(JumpInsnNode.class, 0, (insn, memory) -> {
STATES.put(11, casting(JumpInsnNode.class, (insn, memory) -> {
if ((memory.tmp == 1 && insn.getOpcode() == Opcodes.IF_ICMPGE) ||
(memory.tmp == 2 && insn.getOpcode() == Opcodes.IF_ICMPLE)) {
memory.tmp = 0;
@@ -129,22 +127,16 @@ public class ChunkProviderSuperPatcher implements IClassNodeTransformer {
memory.tmp = 0;
return 0;
}));
STATES.put(12, casting(LabelNode.class, 0, 13));
STATES.put(13, casting(VarInsnNode.class, 0, (insn, memory) -> {
if (insn.getOpcode() == Opcodes.ALOAD &&
insn.var == memory.biomeArrayIndex) {
return 14;
}
return 0;
}));
STATES.put(14, casting(VarInsnNode.class, 0, (insn, memory) -> {
if (insn.getOpcode() == Opcodes.ILOAD &&
insn.var == memory.iteratorIndex) {
return 15;
}
return 0;
}));
STATES.put(15, casting(VarInsnNode.class, 0, (insn, memory) -> {
STATES.put(12, casting(LabelNode.class, 13));
STATES.put(13, casting(VarInsnNode.class, (insn, memory) ->
insn.getOpcode() == Opcodes.ALOAD &&
insn.var == memory.biomeArrayIndex
? 14 : 0));
STATES.put(14, casting(VarInsnNode.class, (insn, memory) ->
insn.getOpcode() == Opcodes.ILOAD &&
insn.var == memory.iteratorIndex
? 15 : 0));
STATES.put(15, casting(VarInsnNode.class, (insn, memory) -> {
if (insn.getOpcode() == Opcodes.ALOAD) {
if (insn.var == 0) {
memory.altFlags = 1;
@@ -157,7 +149,7 @@ public class ChunkProviderSuperPatcher implements IClassNodeTransformer {
}
return 0;
}));
STATES.put(16, casting(FieldInsnNode.class, 0, (insn, memory) -> {
STATES.put(16, casting(FieldInsnNode.class, (insn, memory) -> {
if ((insn.getOpcode() == Opcodes.GETFIELD || insn.getOpcode() == Opcodes.GETSTATIC) &&
insn.desc.equals("[L" + BIOME_GEN_BASE_CLASS + ";")) {
memory.biomesForGenerationFieldOwner = insn.owner;
@@ -166,31 +158,27 @@ public class ChunkProviderSuperPatcher implements IClassNodeTransformer {
}
return 0;
}));
STATES.put(17, casting(VarInsnNode.class, 0, (insn, memory) -> {
if (insn.getOpcode() == Opcodes.ILOAD &&
insn.var == memory.iteratorIndex) {
return 18;
}
return 0;
}));
STATES.put(18, casting(InsnNode.class, 0, (insn) -> insn.getOpcode() == Opcodes.AALOAD ? 19 : 0));
STATES.put(19, casting(FieldInsnNode.class, 0, (insn) -> {
if (insn.getOpcode() == Opcodes.GETFIELD &&
STATES.put(17, casting(VarInsnNode.class, (insn, memory) ->
insn.getOpcode() == Opcodes.ILOAD &&
insn.var == memory.iteratorIndex
? 18 : 0));
STATES.put(18, casting(InsnNode.class, (insn) ->
insn.getOpcode() == Opcodes.AALOAD
? 19 : 0));
STATES.put(19, casting(FieldInsnNode.class, (insn) ->
insn.getOpcode() == Opcodes.GETFIELD &&
insn.owner.equals(BIOME_GEN_BASE_CLASS) &&
insn.name.equals(BIOME_ID_FIELD) &&
insn.desc.equals("I")) {
return 20;
}
return 0;
}));
STATES.put(20, casting(InsnNode.class, 0, (insn, memory) -> {
insn.name.equals(BIOME_ID_FIELD) &
insn.desc.equals("I")
? 20 : 0));
STATES.put(20, casting(InsnNode.class, (insn, memory) -> {
if (insn.getOpcode() == Opcodes.I2B) {
memory.castInsn = memory.currentInsn;
return 21;
}
return 0;
}));
STATES.put(21, casting(InsnNode.class, 0, (insn, memory) -> {
STATES.put(21, casting(InsnNode.class, (insn, memory) -> {
if (insn.getOpcode() == Opcodes.BASTORE) {
memory.arrayStoreInsn = memory.currentInsn;
return -2;
@@ -198,22 +186,22 @@ public class ChunkProviderSuperPatcher implements IClassNodeTransformer {
return 0;
}));
}
private static <T> BiFunction<AbstractInsnNode, Memory, Integer> casting(Class<T> clazz, int failState, int okState) {
return casting(clazz, failState, (insn, memory) -> okState);
private static <T> BiFunction<AbstractInsnNode, Memory, Integer> casting(Class<T> clazz, int okState) {
return casting(clazz, (insn, memory) -> okState);
}
private static <T> BiFunction<AbstractInsnNode, Memory, Integer> casting(Class<T> clazz, int failState, Function<T, Integer> okCode) {
return casting(clazz, failState, (insn, memory) -> okCode.apply(insn));
private static <T> BiFunction<AbstractInsnNode, Memory, Integer> casting(Class<T> clazz, Function<T, Integer> okCode) {
return casting(clazz, (insn, memory) -> okCode.apply(insn));
}
private static <T> BiFunction<AbstractInsnNode, Memory, Integer> casting(Class<T> clazz, int failState, BiFunction<T, Memory, Integer> okCode) {
private static <T> BiFunction<AbstractInsnNode, Memory, Integer> casting(Class<T> clazz, BiFunction<T, Memory, Integer> okCode) {
return (insn, memory) -> {
if (insn instanceof LineNumberNode) {
return -1;
} else if (clazz.isInstance(insn)) {
return okCode.apply(clazz.cast(insn), memory);
} else {
return failState;
return 0;
}
};
}
@@ -246,11 +234,9 @@ public class ChunkProviderSuperPatcher implements IClassNodeTransformer {
val insn = insnList.get(insnIndex);
if (insn instanceof FrameNode) {
val frame = (FrameNode) insn;
switch (frame.type) {
case Opcodes.F_NEW:
memory.locals.clear();
memory.locals.addAll(frame.local);
break;
if (frame.type == Opcodes.F_NEW) {
memory.locals.clear();
memory.locals.addAll(frame.local);
}
}
val newState = STATES.get(state).apply(insn, memory);
@@ -333,7 +319,7 @@ public class ChunkProviderSuperPatcher implements IClassNodeTransformer {
I2B //Replace with I2S
BASTORE //Replace with SASTORE
L5
IINC 8 1
IINC k 1
GOTO L3
L6
*/