openrs2
/
fernflower
1
0
Fork 0
Code Issues 7 Pull Requests Releases Activity

Add bytecodeOffset to stack variables where it is unique
continuous-integration/drone/push Build is passing
Details

Browse Source
master
Graham 4 years ago
parent 35228e6d63
commit eb536c94d7
1 changed files with 50 additions and 44 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 94
      src/org/jetbrains/java/decompiler/modules/decompiler/ExprProcessor.java

94
src/org/jetbrains/java/decompiler/modules/decompiler/ExprProcessor.java
Unescape View File

@ -287,35 +287,35 @@ public class ExprProcessor implements CodeConstants {
switch (instr.opcode) {
case opc_aconst_null:
pushEx(stack, exprlist, new ConstExprent(VarType.VARTYPE_NULL, null, bytecode_offsets));
pushEx(stack, exprlist, new ConstExprent(VarType.VARTYPE_NULL, null, bytecode_offsets), bytecode_offset);
break;
case opc_bipush:
case opc_sipush:
pushEx(stack, exprlist, new ConstExprent(instr.operand(0), true, bytecode_offsets));
pushEx(stack, exprlist, new ConstExprent(instr.operand(0), true, bytecode_offsets), bytecode_offset);
break;
case opc_lconst_0:
case opc_lconst_1:
pushEx(stack, exprlist, new ConstExprent(VarType.VARTYPE_LONG, (long)(instr.opcode - opc_lconst_0), bytecode_offsets));
pushEx(stack, exprlist, new ConstExprent(VarType.VARTYPE_LONG, (long)(instr.opcode - opc_lconst_0), bytecode_offsets), bytecode_offset);
break;
case opc_fconst_0:
case opc_fconst_1:
case opc_fconst_2:
pushEx(stack, exprlist, new ConstExprent(VarType.VARTYPE_FLOAT, (float)(instr.opcode - opc_fconst_0), bytecode_offsets));
pushEx(stack, exprlist, new ConstExprent(VarType.VARTYPE_FLOAT, (float)(instr.opcode - opc_fconst_0), bytecode_offsets), bytecode_offset);
break;
case opc_dconst_0:
case opc_dconst_1:
pushEx(stack, exprlist, new ConstExprent(VarType.VARTYPE_DOUBLE, (double)(instr.opcode - opc_dconst_0), bytecode_offsets));
pushEx(stack, exprlist, new ConstExprent(VarType.VARTYPE_DOUBLE, (double)(instr.opcode - opc_dconst_0), bytecode_offsets), bytecode_offset);
break;
case opc_ldc:
case opc_ldc_w:
case opc_ldc2_w:
PooledConstant cn = pool.getConstant(instr.operand(0));
if (cn instanceof PrimitiveConstant) {
pushEx(stack, exprlist, new ConstExprent(consts[cn.type - CONSTANT_Integer], ((PrimitiveConstant)cn).value, bytecode_offsets));
pushEx(stack, exprlist, new ConstExprent(consts[cn.type - CONSTANT_Integer], ((PrimitiveConstant)cn).value, bytecode_offsets), bytecode_offset);
}
else if (cn instanceof LinkConstant) {
//TODO: for now treat Links as Strings
pushEx(stack, exprlist, new ConstExprent(VarType.VARTYPE_STRING, ((LinkConstant)cn).elementname, bytecode_offsets));
pushEx(stack, exprlist, new ConstExprent(VarType.VARTYPE_STRING, ((LinkConstant)cn).elementname, bytecode_offsets), bytecode_offset);
}
break;
case opc_iload:
@ -323,7 +323,7 @@ public class ExprProcessor implements CodeConstants {
case opc_fload:
case opc_dload:
case opc_aload:
pushEx(stack, exprlist, new VarExprent(instr.operand(0), varTypes[instr.opcode - opc_iload], varProcessor, bytecode_offset, bytecode_offset));
pushEx(stack, exprlist, new VarExprent(instr.operand(0), varTypes[instr.opcode - opc_iload], varProcessor, bytecode_offset, bytecode_offset), bytecode_offset);
break;
case opc_iaload:
case opc_laload:
@ -344,7 +344,7 @@ public class ExprProcessor implements CodeConstants {
case opc_daload:
vartype = VarType.VARTYPE_DOUBLE;
}
pushEx(stack, exprlist, new ArrayExprent(arr, index, arrTypes[instr.opcode - opc_iaload], bytecode_offsets), vartype);
pushEx(stack, exprlist, new ArrayExprent(arr, index, arrTypes[instr.opcode - opc_iaload], bytecode_offsets), bytecode_offset, vartype);
break;
case opc_istore:
case opc_lstore:
@ -393,7 +393,7 @@ public class ExprProcessor implements CodeConstants {
case opc_lrem:
case opc_frem:
case opc_drem:
pushEx(stack, exprlist, new FunctionExprent(func1[(instr.opcode - opc_iadd) / 4], stack, bytecode_offsets));
pushEx(stack, exprlist, new FunctionExprent(func1[(instr.opcode - opc_iadd) / 4], stack, bytecode_offsets), bytecode_offset);
break;
case opc_ishl:
case opc_lshl:
@ -407,13 +407,13 @@ public class ExprProcessor implements CodeConstants {
case opc_lor:
case opc_ixor:
case opc_lxor:
pushEx(stack, exprlist, new FunctionExprent(func2[(instr.opcode - opc_ishl) / 2], stack, bytecode_offsets));
pushEx(stack, exprlist, new FunctionExprent(func2[(instr.opcode - opc_ishl) / 2], stack, bytecode_offsets), bytecode_offset);
break;
case opc_ineg:
case opc_lneg:
case opc_fneg:
case opc_dneg:
pushEx(stack, exprlist, new FunctionExprent(FunctionExprent.FUNCTION_NEG, stack, bytecode_offsets));
pushEx(stack, exprlist, new FunctionExprent(FunctionExprent.FUNCTION_NEG, stack, bytecode_offsets), bytecode_offset);
break;
case opc_iinc:
VarExprent vevar = new VarExprent(instr.operand(0), VarType.VARTYPE_INT, varProcessor, bytecode_offset, bytecode_offset);
@ -437,14 +437,14 @@ public class ExprProcessor implements CodeConstants {
case opc_i2b:
case opc_i2c:
case opc_i2s:
pushEx(stack, exprlist, new FunctionExprent(func3[instr.opcode - opc_i2l], stack, bytecode_offsets));
pushEx(stack, exprlist, new FunctionExprent(func3[instr.opcode - opc_i2l], stack, bytecode_offsets), bytecode_offset);
break;
case opc_lcmp:
case opc_fcmpl:
case opc_fcmpg:
case opc_dcmpl:
case opc_dcmpg:
pushEx(stack, exprlist, new FunctionExprent(func4[instr.opcode - opc_lcmp], stack, bytecode_offsets));
pushEx(stack, exprlist, new FunctionExprent(func4[instr.opcode - opc_lcmp], stack, bytecode_offsets), bytecode_offset);
break;
case opc_ifeq:
case opc_ifne:
@ -492,13 +492,13 @@ public class ExprProcessor implements CodeConstants {
case opc_instanceof:
stack.push(new ConstExprent(new VarType(pool.getPrimitiveConstant(instr.operand(0)).getString(), true), null, null));
case opc_arraylength:
pushEx(stack, exprlist, new FunctionExprent(mapConsts.get(instr.opcode), stack, bytecode_offsets));
pushEx(stack, exprlist, new FunctionExprent(mapConsts.get(instr.opcode), stack, bytecode_offsets), bytecode_offset);
break;
case opc_getstatic:
case opc_getfield:
pushEx(stack, exprlist,
new FieldExprent(pool.getLinkConstant(instr.operand(0)), instr.opcode == opc_getstatic ? null : stack.pop(),
bytecode_offsets));
bytecode_offsets), bytecode_offset);
break;
case opc_putstatic:
case opc_putfield:
@ -526,7 +526,7 @@ public class ExprProcessor implements CodeConstants {
exprlist.add(exprinv);
}
else {
pushEx(stack, exprlist, exprinv);
pushEx(stack, exprlist, exprinv, bytecode_offset);
}
}
break;
@ -538,65 +538,65 @@ public class ExprProcessor implements CodeConstants {
if (instr.opcode != opc_multianewarray) {
arrType = arrType.resizeArrayDim(arrType.arrayDim + dimensions);
}
pushEx(stack, exprlist, new NewExprent(arrType, stack, dimensions, bytecode_offsets));
pushEx(stack, exprlist, new NewExprent(arrType, stack, dimensions, bytecode_offsets), bytecode_offset);
break;
case opc_newarray:
pushEx(stack, exprlist, new NewExprent(new VarType(arrTypeIds[instr.operand(0) - 4], 1), stack, 1, bytecode_offsets));
pushEx(stack, exprlist, new NewExprent(new VarType(arrTypeIds[instr.operand(0) - 4], 1), stack, 1, bytecode_offsets), bytecode_offset);
break;
case opc_dup:
pushEx(stack, exprlist, stack.getByOffset(-1).copy());
pushEx(stack, exprlist, stack.getByOffset(-1).copy(), bytecode_offset);
break;
case opc_dup_x1:
insertByOffsetEx(-2, stack, exprlist, -1);
insertByOffsetEx(-2, stack, exprlist, -1, bytecode_offset);
break;
case opc_dup_x2:
if (stack.getByOffset(-2).getExprType().stackSize == 2) {
insertByOffsetEx(-2, stack, exprlist, -1);
insertByOffsetEx(-2, stack, exprlist, -1, bytecode_offset);
}
else {
insertByOffsetEx(-3, stack, exprlist, -1);
insertByOffsetEx(-3, stack, exprlist, -1, bytecode_offset);
}
break;
case opc_dup2:
if (stack.getByOffset(-1).getExprType().stackSize == 2) {
pushEx(stack, exprlist, stack.getByOffset(-1).copy());
pushEx(stack, exprlist, stack.getByOffset(-1).copy(), bytecode_offset);
}
else {
pushEx(stack, exprlist, stack.getByOffset(-2).copy());
pushEx(stack, exprlist, stack.getByOffset(-2).copy());
pushEx(stack, exprlist, stack.getByOffset(-2).copy(), -1);
pushEx(stack, exprlist, stack.getByOffset(-2).copy(), -1);
}
break;
case opc_dup2_x1:
if (stack.getByOffset(-1).getExprType().stackSize == 2) {
insertByOffsetEx(-2, stack, exprlist, -1);
insertByOffsetEx(-2, stack, exprlist, -1, bytecode_offset);
}
else {
insertByOffsetEx(-3, stack, exprlist, -2);
insertByOffsetEx(-3, stack, exprlist, -1);
insertByOffsetEx(-3, stack, exprlist, -2, -1);
insertByOffsetEx(-3, stack, exprlist, -1, -1);
}
break;
case opc_dup2_x2:
if (stack.getByOffset(-1).getExprType().stackSize == 2) {
if (stack.getByOffset(-2).getExprType().stackSize == 2) {
insertByOffsetEx(-2, stack, exprlist, -1);
insertByOffsetEx(-2, stack, exprlist, -1, bytecode_offset);
}
else {
insertByOffsetEx(-3, stack, exprlist, -1);
insertByOffsetEx(-3, stack, exprlist, -1, bytecode_offset);
}
}
else {
if (stack.getByOffset(-3).getExprType().stackSize == 2) {
insertByOffsetEx(-3, stack, exprlist, -2);
insertByOffsetEx(-3, stack, exprlist, -1);
insertByOffsetEx(-3, stack, exprlist, -2, -1);
insertByOffsetEx(-3, stack, exprlist, -1, -1);
}
else {
insertByOffsetEx(-4, stack, exprlist, -2);
insertByOffsetEx(-4, stack, exprlist, -1);
insertByOffsetEx(-4, stack, exprlist, -2, -1);
insertByOffsetEx(-4, stack, exprlist, -1, -1);
}
}
break;
case opc_swap:
insertByOffsetEx(-2, stack, exprlist, -1);
insertByOffsetEx(-2, stack, exprlist, -1, bytecode_offset);
stack.pop();
break;
case opc_pop:
@ -632,20 +632,20 @@ public class ExprProcessor implements CodeConstants {
return -1;
}
private void pushEx(ExprentStack stack, List<Exprent> exprlist, Exprent exprent) {
pushEx(stack, exprlist, exprent, null);
private void pushEx(ExprentStack stack, List<Exprent> exprlist, Exprent exprent, int bytecodeOffset) {
pushEx(stack, exprlist, exprent, bytecodeOffset, null);
}
private void pushEx(ExprentStack stack, List<Exprent> exprlist, Exprent exprent, VarType vartype) {
private void pushEx(ExprentStack stack, List<Exprent> exprlist, Exprent exprent, int bytecodeOffset, VarType vartype) {
int varindex = VarExprent.STACK_BASE + stack.size();
VarExprent var = new VarExprent(varindex, vartype == null ? exprent.getExprType() : vartype, varProcessor);
VarExprent var = new VarExprent(varindex, vartype == null ? exprent.getExprType() : vartype, varProcessor, -1, bytecodeOffset);
var.setStack(true);
exprlist.add(new AssignmentExprent(var, exprent, null));
stack.push(var.copy());
}
private void insertByOffsetEx(int offset, ExprentStack stack, List<Exprent> exprlist, int copyoffset) {
private void insertByOffsetEx(int offset, ExprentStack stack, List<Exprent> exprlist, int copyoffset, int bytecodeOffset) {
int base = VarExprent.STACK_BASE + stack.size();
@ -653,14 +653,20 @@ public class ExprProcessor implements CodeConstants {
for (int i = -1; i >= offset; i--) {
Exprent varex = stack.pop();
VarExprent varnew = new VarExprent(base + i + 1, varex.getExprType(), varProcessor);
int varexBytecodeOffset = -1;
if (varex.type == Exprent.EXPRENT_VAR) {
varexBytecodeOffset = ((VarExprent) varex).getBytecodeOffset();
}
VarExprent varnew = new VarExprent(base + i + 1, varex.getExprType(), varProcessor, -1, varexBytecodeOffset);
varnew.setStack(true);
exprlist.add(new AssignmentExprent(varnew, varex, null));
lst.add(0, (VarExprent)varnew.copy());
}
Exprent exprent = lst.get(lst.size() + copyoffset).copy();
VarExprent var = new VarExprent(base + offset, exprent.getExprType(), varProcessor);
VarExprent var = new VarExprent(base + offset, exprent.getExprType(), varProcessor, -1, bytecodeOffset);
var.setStack(true);
exprlist.add(new AssignmentExprent(var, exprent, null));
lst.add(0, (VarExprent)var.copy());
@ -716,7 +722,7 @@ public class ExprProcessor implements CodeConstants {
public static PrimitiveExprsList getExpressionData(VarExprent var) {
PrimitiveExprsList prlst = new PrimitiveExprsList();
VarExprent vartmp = new VarExprent(VarExprent.STACK_BASE, var.getExprType(), var.getProcessor());
VarExprent vartmp = new VarExprent(VarExprent.STACK_BASE, var.getExprType(), var.getProcessor(), -1, var.getBytecodeOffset());
vartmp.setStack(true);
prlst.getLstExprents().add(new AssignmentExprent(vartmp, var.copy(), null));

Write Preview
Loading…
Cancel
Save