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| author | 2015-01-13 23:25:04 -0500 | |
|---|---|---|
| committer | 2015-01-13 23:25:04 -0500 | |
| commit | 959cb5fd4f9586ec3bd265b452fe25fe1db82e3f (patch) | |
| tree | bdd8a2c52c2fe053ba3460614bde8542e5378dbe /src/cuchaz/enigma/bytecode/ConstPoolEditor.java | |
| parent | got rid of gradle in favor of ivy+ssjb (diff) | |
| download | enigma-fork-959cb5fd4f9586ec3bd265b452fe25fe1db82e3f.tar.gz enigma-fork-959cb5fd4f9586ec3bd265b452fe25fe1db82e3f.tar.xz enigma-fork-959cb5fd4f9586ec3bd265b452fe25fe1db82e3f.zip | |
source format change
don't hate me too much if you were planning a big merge. =P
Diffstat (limited to 'src/cuchaz/enigma/bytecode/ConstPoolEditor.java')
| -rw-r--r-- | src/cuchaz/enigma/bytecode/ConstPoolEditor.java | 295 |
1 files changed, 121 insertions, 174 deletions
diff --git a/src/cuchaz/enigma/bytecode/ConstPoolEditor.java b/src/cuchaz/enigma/bytecode/ConstPoolEditor.java index aa6149c..2dec3b7 100644 --- a/src/cuchaz/enigma/bytecode/ConstPoolEditor.java +++ b/src/cuchaz/enigma/bytecode/ConstPoolEditor.java | |||
| @@ -23,8 +23,8 @@ import cuchaz.enigma.bytecode.accessors.ClassInfoAccessor; | |||
| 23 | import cuchaz.enigma.bytecode.accessors.ConstInfoAccessor; | 23 | import cuchaz.enigma.bytecode.accessors.ConstInfoAccessor; |
| 24 | import cuchaz.enigma.bytecode.accessors.MemberRefInfoAccessor; | 24 | import cuchaz.enigma.bytecode.accessors.MemberRefInfoAccessor; |
| 25 | 25 | ||
| 26 | public class ConstPoolEditor | 26 | public class ConstPoolEditor { |
| 27 | { | 27 | |
| 28 | private static Method m_getItem; | 28 | private static Method m_getItem; |
| 29 | private static Method m_addItem; | 29 | private static Method m_addItem; |
| 30 | private static Method m_addItem0; | 30 | private static Method m_addItem0; |
| @@ -36,264 +36,213 @@ public class ConstPoolEditor | |||
| 36 | private static Method m_methodWritePool; | 36 | private static Method m_methodWritePool; |
| 37 | private static Constructor<ConstPool> m_constructorPool; | 37 | private static Constructor<ConstPool> m_constructorPool; |
| 38 | 38 | ||
| 39 | static | 39 | static { |
| 40 | { | 40 | try { |
| 41 | try | 41 | m_getItem = ConstPool.class.getDeclaredMethod("getItem", int.class); |
| 42 | { | 42 | m_getItem.setAccessible(true); |
| 43 | m_getItem = ConstPool.class.getDeclaredMethod( "getItem", int.class ); | ||
| 44 | m_getItem.setAccessible( true ); | ||
| 45 | 43 | ||
| 46 | m_addItem = ConstPool.class.getDeclaredMethod( "addItem", Class.forName( "javassist.bytecode.ConstInfo" ) ); | 44 | m_addItem = ConstPool.class.getDeclaredMethod("addItem", Class.forName("javassist.bytecode.ConstInfo")); |
| 47 | m_addItem.setAccessible( true ); | 45 | m_addItem.setAccessible(true); |
| 48 | 46 | ||
| 49 | m_addItem0 = ConstPool.class.getDeclaredMethod( "addItem0", Class.forName( "javassist.bytecode.ConstInfo" ) ); | 47 | m_addItem0 = ConstPool.class.getDeclaredMethod("addItem0", Class.forName("javassist.bytecode.ConstInfo")); |
| 50 | m_addItem0.setAccessible( true ); | 48 | m_addItem0.setAccessible(true); |
| 51 | 49 | ||
| 52 | m_items = ConstPool.class.getDeclaredField( "items" ); | 50 | m_items = ConstPool.class.getDeclaredField("items"); |
| 53 | m_items.setAccessible( true ); | 51 | m_items.setAccessible(true); |
| 54 | 52 | ||
| 55 | m_cache = ConstPool.class.getDeclaredField( "itemsCache" ); | 53 | m_cache = ConstPool.class.getDeclaredField("itemsCache"); |
| 56 | m_cache.setAccessible( true ); | 54 | m_cache.setAccessible(true); |
| 57 | 55 | ||
| 58 | m_numItems = ConstPool.class.getDeclaredField( "numOfItems" ); | 56 | m_numItems = ConstPool.class.getDeclaredField("numOfItems"); |
| 59 | m_numItems.setAccessible( true ); | 57 | m_numItems.setAccessible(true); |
| 60 | 58 | ||
| 61 | m_objects = Class.forName( "javassist.bytecode.LongVector" ).getDeclaredField( "objects" ); | 59 | m_objects = Class.forName("javassist.bytecode.LongVector").getDeclaredField("objects"); |
| 62 | m_objects.setAccessible( true ); | 60 | m_objects.setAccessible(true); |
| 63 | 61 | ||
| 64 | m_elements = Class.forName( "javassist.bytecode.LongVector" ).getDeclaredField( "elements" ); | 62 | m_elements = Class.forName("javassist.bytecode.LongVector").getDeclaredField("elements"); |
| 65 | m_elements.setAccessible( true ); | 63 | m_elements.setAccessible(true); |
| 66 | 64 | ||
| 67 | m_methodWritePool = ConstPool.class.getDeclaredMethod( "write", DataOutputStream.class ); | 65 | m_methodWritePool = ConstPool.class.getDeclaredMethod("write", DataOutputStream.class); |
| 68 | m_methodWritePool.setAccessible( true ); | 66 | m_methodWritePool.setAccessible(true); |
| 69 | 67 | ||
| 70 | m_constructorPool = ConstPool.class.getDeclaredConstructor( DataInputStream.class ); | 68 | m_constructorPool = ConstPool.class.getDeclaredConstructor(DataInputStream.class); |
| 71 | m_constructorPool.setAccessible( true ); | 69 | m_constructorPool.setAccessible(true); |
| 72 | } | 70 | } catch (Exception ex) { |
| 73 | catch( Exception ex ) | 71 | throw new Error(ex); |
| 74 | { | ||
| 75 | throw new Error( ex ); | ||
| 76 | } | 72 | } |
| 77 | } | 73 | } |
| 78 | 74 | ||
| 79 | private ConstPool m_pool; | 75 | private ConstPool m_pool; |
| 80 | 76 | ||
| 81 | public ConstPoolEditor( ConstPool pool ) | 77 | public ConstPoolEditor(ConstPool pool) { |
| 82 | { | ||
| 83 | m_pool = pool; | 78 | m_pool = pool; |
| 84 | } | 79 | } |
| 85 | 80 | ||
| 86 | public void writePool( DataOutputStream out ) | 81 | public void writePool(DataOutputStream out) { |
| 87 | { | 82 | try { |
| 88 | try | 83 | m_methodWritePool.invoke(m_pool, out); |
| 89 | { | 84 | } catch (Exception ex) { |
| 90 | m_methodWritePool.invoke( m_pool, out ); | 85 | throw new Error(ex); |
| 91 | } | ||
| 92 | catch( Exception ex ) | ||
| 93 | { | ||
| 94 | throw new Error( ex ); | ||
| 95 | } | 86 | } |
| 96 | } | 87 | } |
| 97 | 88 | ||
| 98 | public static ConstPool readPool( DataInputStream in ) | 89 | public static ConstPool readPool(DataInputStream in) { |
| 99 | { | 90 | try { |
| 100 | try | 91 | return m_constructorPool.newInstance(in); |
| 101 | { | 92 | } catch (Exception ex) { |
| 102 | return m_constructorPool.newInstance( in ); | 93 | throw new Error(ex); |
| 103 | } | ||
| 104 | catch( Exception ex ) | ||
| 105 | { | ||
| 106 | throw new Error( ex ); | ||
| 107 | } | 94 | } |
| 108 | } | 95 | } |
| 109 | 96 | ||
| 110 | public String getMemberrefClassname( int memberrefIndex ) | 97 | public String getMemberrefClassname(int memberrefIndex) { |
| 111 | { | 98 | return Descriptor.toJvmName(m_pool.getClassInfo(m_pool.getMemberClass(memberrefIndex))); |
| 112 | return Descriptor.toJvmName( m_pool.getClassInfo( m_pool.getMemberClass( memberrefIndex ) ) ); | ||
| 113 | } | 99 | } |
| 114 | 100 | ||
| 115 | public String getMemberrefName( int memberrefIndex ) | 101 | public String getMemberrefName(int memberrefIndex) { |
| 116 | { | 102 | return m_pool.getUtf8Info(m_pool.getNameAndTypeName(m_pool.getMemberNameAndType(memberrefIndex))); |
| 117 | return m_pool.getUtf8Info( m_pool.getNameAndTypeName( m_pool.getMemberNameAndType( memberrefIndex ) ) ); | ||
| 118 | } | 103 | } |
| 119 | 104 | ||
| 120 | public String getMemberrefType( int memberrefIndex ) | 105 | public String getMemberrefType(int memberrefIndex) { |
| 121 | { | 106 | return m_pool.getUtf8Info(m_pool.getNameAndTypeDescriptor(m_pool.getMemberNameAndType(memberrefIndex))); |
| 122 | return m_pool.getUtf8Info( m_pool.getNameAndTypeDescriptor( m_pool.getMemberNameAndType( memberrefIndex ) ) ); | ||
| 123 | } | 107 | } |
| 124 | 108 | ||
| 125 | public ConstInfoAccessor getItem( int index ) | 109 | public ConstInfoAccessor getItem(int index) { |
| 126 | { | 110 | try { |
| 127 | try | 111 | Object entry = m_getItem.invoke(m_pool, index); |
| 128 | { | 112 | if (entry == null) { |
| 129 | Object entry = m_getItem.invoke( m_pool, index ); | ||
| 130 | if( entry == null ) | ||
| 131 | { | ||
| 132 | return null; | 113 | return null; |
| 133 | } | 114 | } |
| 134 | return new ConstInfoAccessor( entry ); | 115 | return new ConstInfoAccessor(entry); |
| 135 | } | 116 | } catch (Exception ex) { |
| 136 | catch( Exception ex ) | 117 | throw new Error(ex); |
| 137 | { | ||
| 138 | throw new Error( ex ); | ||
| 139 | } | 118 | } |
| 140 | } | 119 | } |
| 141 | 120 | ||
| 142 | public int addItem( Object item ) | 121 | public int addItem(Object item) { |
| 143 | { | 122 | try { |
| 144 | try | 123 | return (Integer)m_addItem.invoke(m_pool, item); |
| 145 | { | 124 | } catch (Exception ex) { |
| 146 | return (Integer)m_addItem.invoke( m_pool, item ); | 125 | throw new Error(ex); |
| 147 | } | ||
| 148 | catch( Exception ex ) | ||
| 149 | { | ||
| 150 | throw new Error( ex ); | ||
| 151 | } | 126 | } |
| 152 | } | 127 | } |
| 153 | 128 | ||
| 154 | public int addItemForceNew( Object item ) | 129 | public int addItemForceNew(Object item) { |
| 155 | { | 130 | try { |
| 156 | try | 131 | return (Integer)m_addItem0.invoke(m_pool, item); |
| 157 | { | 132 | } catch (Exception ex) { |
| 158 | return (Integer)m_addItem0.invoke( m_pool, item ); | 133 | throw new Error(ex); |
| 159 | } | ||
| 160 | catch( Exception ex ) | ||
| 161 | { | ||
| 162 | throw new Error( ex ); | ||
| 163 | } | 134 | } |
| 164 | } | 135 | } |
| 165 | @SuppressWarnings( "rawtypes" ) | 136 | |
| 166 | public void removeLastItem( ) | 137 | @SuppressWarnings("rawtypes") |
| 167 | { | 138 | public void removeLastItem() { |
| 168 | try | 139 | try { |
| 169 | { | ||
| 170 | // remove the item from the cache | 140 | // remove the item from the cache |
| 171 | HashMap cache = getCache(); | 141 | HashMap cache = getCache(); |
| 172 | if( cache != null ) | 142 | if (cache != null) { |
| 173 | { | 143 | Object item = getItem(m_pool.getSize() - 1); |
| 174 | Object item = getItem( m_pool.getSize() - 1 ); | 144 | cache.remove(item); |
| 175 | cache.remove( item ); | ||
| 176 | } | 145 | } |
| 177 | 146 | ||
| 178 | // remove the actual item | 147 | // remove the actual item |
| 179 | // based off of LongVector.addElement() | 148 | // based off of LongVector.addElement() |
| 180 | Object items = m_items.get( m_pool ); | 149 | Object items = m_items.get(m_pool); |
| 181 | Object[][] objects = (Object[][])m_objects.get( items ); | 150 | Object[][] objects = (Object[][])m_objects.get(items); |
| 182 | int numElements = (Integer)m_elements.get( items ) - 1; | 151 | int numElements = (Integer)m_elements.get(items) - 1; |
| 183 | int nth = numElements >> 7; | 152 | int nth = numElements >> 7; |
| 184 | int offset = numElements & (128 - 1); | 153 | int offset = numElements & (128 - 1); |
| 185 | objects[nth][offset] = null; | 154 | objects[nth][offset] = null; |
| 186 | 155 | ||
| 187 | // decrement the number of items | 156 | // decrement the number of items |
| 188 | m_elements.set( items, numElements ); | 157 | m_elements.set(items, numElements); |
| 189 | m_numItems.set( m_pool, (Integer)m_numItems.get( m_pool ) - 1 ); | 158 | m_numItems.set(m_pool, (Integer)m_numItems.get(m_pool) - 1); |
| 190 | } | 159 | } catch (Exception ex) { |
| 191 | catch( Exception ex ) | 160 | throw new Error(ex); |
| 192 | { | ||
| 193 | throw new Error( ex ); | ||
| 194 | } | 161 | } |
| 195 | } | 162 | } |
| 196 | 163 | ||
| 197 | @SuppressWarnings( "rawtypes" ) | 164 | @SuppressWarnings("rawtypes") |
| 198 | /* TEMP */public HashMap getCache( ) | 165 | public HashMap getCache() { |
| 199 | { | 166 | try { |
| 200 | try | 167 | return (HashMap)m_cache.get(m_pool); |
| 201 | { | 168 | } catch (Exception ex) { |
| 202 | return (HashMap)m_cache.get( m_pool ); | 169 | throw new Error(ex); |
| 203 | } | ||
| 204 | catch( Exception ex ) | ||
| 205 | { | ||
| 206 | throw new Error( ex ); | ||
| 207 | } | 170 | } |
| 208 | } | 171 | } |
| 209 | 172 | ||
| 210 | @SuppressWarnings( { "rawtypes", "unchecked" } ) | 173 | @SuppressWarnings({ "rawtypes", "unchecked" }) |
| 211 | public void changeMemberrefNameAndType( int memberrefIndex, String newName, String newType ) | 174 | public void changeMemberrefNameAndType(int memberrefIndex, String newName, String newType) { |
| 212 | { | ||
| 213 | // NOTE: when changing values, we always need to copy-on-write | 175 | // NOTE: when changing values, we always need to copy-on-write |
| 214 | try | 176 | try { |
| 215 | { | ||
| 216 | // get the memberref item | 177 | // get the memberref item |
| 217 | Object item = getItem( memberrefIndex ).getItem(); | 178 | Object item = getItem(memberrefIndex).getItem(); |
| 218 | 179 | ||
| 219 | // update the cache | 180 | // update the cache |
| 220 | HashMap cache = getCache(); | 181 | HashMap cache = getCache(); |
| 221 | if( cache != null ) | 182 | if (cache != null) { |
| 222 | { | 183 | cache.remove(item); |
| 223 | cache.remove( item ); | ||
| 224 | } | 184 | } |
| 225 | 185 | ||
| 226 | new MemberRefInfoAccessor( item ).setNameAndTypeIndex( m_pool.addNameAndTypeInfo( newName, newType ) ); | 186 | new MemberRefInfoAccessor(item).setNameAndTypeIndex(m_pool.addNameAndTypeInfo(newName, newType)); |
| 227 | 187 | ||
| 228 | // update the cache | 188 | // update the cache |
| 229 | if( cache != null ) | 189 | if (cache != null) { |
| 230 | { | 190 | cache.put(item, item); |
| 231 | cache.put( item, item ); | ||
| 232 | } | 191 | } |
| 233 | } | 192 | } catch (Exception ex) { |
| 234 | catch( Exception ex ) | 193 | throw new Error(ex); |
| 235 | { | ||
| 236 | throw new Error( ex ); | ||
| 237 | } | 194 | } |
| 238 | 195 | ||
| 239 | // make sure the change worked | 196 | // make sure the change worked |
| 240 | assert( newName.equals( getMemberrefName( memberrefIndex ) ) ); | 197 | assert (newName.equals(getMemberrefName(memberrefIndex))); |
| 241 | assert( newType.equals( getMemberrefType( memberrefIndex ) ) ); | 198 | assert (newType.equals(getMemberrefType(memberrefIndex))); |
| 242 | } | 199 | } |
| 243 | 200 | ||
| 244 | @SuppressWarnings( { "rawtypes", "unchecked" } ) | 201 | @SuppressWarnings({ "rawtypes", "unchecked" }) |
| 245 | public void changeClassName( int classNameIndex, String newName ) | 202 | public void changeClassName(int classNameIndex, String newName) { |
| 246 | { | ||
| 247 | // NOTE: when changing values, we always need to copy-on-write | 203 | // NOTE: when changing values, we always need to copy-on-write |
| 248 | try | 204 | try { |
| 249 | { | ||
| 250 | // get the class item | 205 | // get the class item |
| 251 | Object item = getItem( classNameIndex ).getItem(); | 206 | Object item = getItem(classNameIndex).getItem(); |
| 252 | 207 | ||
| 253 | // update the cache | 208 | // update the cache |
| 254 | HashMap cache = getCache(); | 209 | HashMap cache = getCache(); |
| 255 | if( cache != null ) | 210 | if (cache != null) { |
| 256 | { | 211 | cache.remove(item); |
| 257 | cache.remove( item ); | ||
| 258 | } | 212 | } |
| 259 | 213 | ||
| 260 | // add the new name and repoint the name-and-type to it | 214 | // add the new name and repoint the name-and-type to it |
| 261 | new ClassInfoAccessor( item ).setNameIndex( m_pool.addUtf8Info( newName ) ); | 215 | new ClassInfoAccessor(item).setNameIndex(m_pool.addUtf8Info(newName)); |
| 262 | 216 | ||
| 263 | // update the cache | 217 | // update the cache |
| 264 | if( cache != null ) | 218 | if (cache != null) { |
| 265 | { | 219 | cache.put(item, item); |
| 266 | cache.put( item, item ); | ||
| 267 | } | 220 | } |
| 268 | } | 221 | } catch (Exception ex) { |
| 269 | catch( Exception ex ) | 222 | throw new Error(ex); |
| 270 | { | ||
| 271 | throw new Error( ex ); | ||
| 272 | } | 223 | } |
| 273 | } | 224 | } |
| 274 | 225 | ||
| 275 | public static ConstPool newConstPool( ) | 226 | public static ConstPool newConstPool() { |
| 276 | { | ||
| 277 | // const pool expects the name of a class to initialize itself | 227 | // const pool expects the name of a class to initialize itself |
| 278 | // but we want an empty pool | 228 | // but we want an empty pool |
| 279 | // so give it a bogus name, and then clear the entries afterwards | 229 | // so give it a bogus name, and then clear the entries afterwards |
| 280 | ConstPool pool = new ConstPool( "a" ); | 230 | ConstPool pool = new ConstPool("a"); |
| 281 | 231 | ||
| 282 | ConstPoolEditor editor = new ConstPoolEditor( pool ); | 232 | ConstPoolEditor editor = new ConstPoolEditor(pool); |
| 283 | int size = pool.getSize(); | 233 | int size = pool.getSize(); |
| 284 | for( int i=0; i<size-1; i++ ) | 234 | for (int i = 0; i < size - 1; i++) { |
| 285 | { | ||
| 286 | editor.removeLastItem(); | 235 | editor.removeLastItem(); |
| 287 | } | 236 | } |
| 288 | 237 | ||
| 289 | // make sure the pool is actually empty | 238 | // make sure the pool is actually empty |
| 290 | // although, in this case "empty" means one thing in it | 239 | // although, in this case "empty" means one thing in it |
| 291 | // the JVM spec says index 0 should be reserved | 240 | // the JVM spec says index 0 should be reserved |
| 292 | assert( pool.getSize() == 1 ); | 241 | assert (pool.getSize() == 1); |
| 293 | assert( editor.getItem( 0 ) == null ); | 242 | assert (editor.getItem(0) == null); |
| 294 | assert( editor.getItem( 1 ) == null ); | 243 | assert (editor.getItem(1) == null); |
| 295 | assert( editor.getItem( 2 ) == null ); | 244 | assert (editor.getItem(2) == null); |
| 296 | assert( editor.getItem( 3 ) == null ); | 245 | assert (editor.getItem(3) == null); |
| 297 | 246 | ||
| 298 | // also, clear the cache | 247 | // also, clear the cache |
| 299 | editor.getCache().clear(); | 248 | editor.getCache().clear(); |
| @@ -301,15 +250,13 @@ public class ConstPoolEditor | |||
| 301 | return pool; | 250 | return pool; |
| 302 | } | 251 | } |
| 303 | 252 | ||
| 304 | public String dump( ) | 253 | public String dump() { |
| 305 | { | ||
| 306 | StringBuilder buf = new StringBuilder(); | 254 | StringBuilder buf = new StringBuilder(); |
| 307 | for( int i=1; i<m_pool.getSize(); i++ ) | 255 | for (int i = 1; i < m_pool.getSize(); i++) { |
| 308 | { | 256 | buf.append(String.format("%4d", i)); |
| 309 | buf.append( String.format( "%4d", i ) ); | 257 | buf.append(" "); |
| 310 | buf.append( " " ); | 258 | buf.append(getItem(i).toString()); |
| 311 | buf.append( getItem( i ).toString() ); | 259 | buf.append("\n"); |
| 312 | buf.append( "\n" ); | ||
| 313 | } | 260 | } |
| 314 | return buf.toString(); | 261 | return buf.toString(); |
| 315 | } | 262 | } |