Java Code Examples for com.sun.org.apache.bcel.internal.generic.LocalVariableGen#getIndex()
The following examples show how to use
com.sun.org.apache.bcel.internal.generic.LocalVariableGen#getIndex() .
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Example 1
| Source File: CompareGenerator.java From jdk1.8-source-analysis with Apache License 2.0 | 6 votes |
|
public CompareGenerator(int access_flags, Type return_type,
Type[] arg_types, String[] arg_names,
String method_name, String class_name,
InstructionList il, ConstantPoolGen cp) {
super(access_flags, return_type, arg_types, arg_names, method_name,
class_name, il, cp);
_iloadCurrent = new ILOAD(CURRENT_INDEX);
_istoreCurrent = new ISTORE(CURRENT_INDEX);
_aloadDom = new ALOAD(DOM_INDEX);
_iloadLast = new ILOAD(LAST_INDEX);
LocalVariableGen iterator =
addLocalVariable("iterator",
Util.getJCRefType(Constants.NODE_ITERATOR_SIG),
null, null);
ITERATOR_INDEX = iterator.getIndex();
_aloadIterator = new ALOAD(ITERATOR_INDEX);
_astoreIterator = new ASTORE(ITERATOR_INDEX);
il.append(new ACONST_NULL());
il.append(storeIterator());
}
Example 2
| Source File: SlotAllocator.java From openjdk-8 with GNU General Public License v2.0 | 6 votes |
|
public void releaseSlot(LocalVariableGen lvg) {
final int size = lvg.getType().getSize();
final int slot = lvg.getIndex();
final int limit = _free;
for (int i = 0; i < limit; i++) {
if (_slotsTaken[i] == slot) {
int j = i + size;
while (j < limit) {
_slotsTaken[i++] = _slotsTaken[j++];
}
_free -= size;
return;
}
}
String state = "Variable slot allocation error"+
"(size="+size+", slot="+slot+", limit="+limit+")";
ErrorMsg err = new ErrorMsg(ErrorMsg.INTERNAL_ERR, state);
throw new Error(err.toString());
}
Example 3
| Source File: CompareGenerator.java From Bytecoder with Apache License 2.0 | 6 votes |
|
public CompareGenerator(int access_flags, Type return_type,
Type[] arg_types, String[] arg_names,
String method_name, String class_name,
InstructionList il, ConstantPoolGen cp) {
super(access_flags, return_type, arg_types, arg_names, method_name,
class_name, il, cp);
_iloadCurrent = new ILOAD(CURRENT_INDEX);
_istoreCurrent = new ISTORE(CURRENT_INDEX);
_aloadDom = new ALOAD(DOM_INDEX);
_iloadLast = new ILOAD(LAST_INDEX);
LocalVariableGen iterator =
addLocalVariable("iterator",
Util.getJCRefType(Constants.NODE_ITERATOR_SIG),
null, null);
ITERATOR_INDEX = iterator.getIndex();
_aloadIterator = new ALOAD(ITERATOR_INDEX);
_astoreIterator = new ASTORE(ITERATOR_INDEX);
il.append(new ACONST_NULL());
il.append(storeIterator());
}
Example 4
| Source File: SlotAllocator.java From openjdk-jdk9 with GNU General Public License v2.0 | 6 votes |
|
public void releaseSlot(LocalVariableGen lvg) {
final int size = lvg.getType().getSize();
final int slot = lvg.getIndex();
final int limit = _free;
for (int i = 0; i < limit; i++) {
if (_slotsTaken[i] == slot) {
int j = i + size;
while (j < limit) {
_slotsTaken[i++] = _slotsTaken[j++];
}
_free -= size;
return;
}
}
String state = "Variable slot allocation error"+
"(size="+size+", slot="+slot+", limit="+limit+")";
ErrorMsg err = new ErrorMsg(ErrorMsg.INTERNAL_ERR, state);
throw new Error(err.toString());
}
Example 5
| Source File: SlotAllocator.java From openjdk-jdk8u with GNU General Public License v2.0 | 6 votes |
|
public void releaseSlot(LocalVariableGen lvg) {
final int size = lvg.getType().getSize();
final int slot = lvg.getIndex();
final int limit = _free;
for (int i = 0; i < limit; i++) {
if (_slotsTaken[i] == slot) {
int j = i + size;
while (j < limit) {
_slotsTaken[i++] = _slotsTaken[j++];
}
_free -= size;
return;
}
}
String state = "Variable slot allocation error"+
"(size="+size+", slot="+slot+", limit="+limit+")";
ErrorMsg err = new ErrorMsg(ErrorMsg.INTERNAL_ERR, state);
throw new Error(err.toString());
}
Example 6
| Source File: CompareGenerator.java From openjdk-8 with GNU General Public License v2.0 | 6 votes |
|
public CompareGenerator(int access_flags, Type return_type,
Type[] arg_types, String[] arg_names,
String method_name, String class_name,
InstructionList il, ConstantPoolGen cp) {
super(access_flags, return_type, arg_types, arg_names, method_name,
class_name, il, cp);
_iloadCurrent = new ILOAD(CURRENT_INDEX);
_istoreCurrent = new ISTORE(CURRENT_INDEX);
_aloadDom = new ALOAD(DOM_INDEX);
_iloadLast = new ILOAD(LAST_INDEX);
LocalVariableGen iterator =
addLocalVariable("iterator",
Util.getJCRefType(Constants.NODE_ITERATOR_SIG),
null, null);
ITERATOR_INDEX = iterator.getIndex();
_aloadIterator = new ALOAD(ITERATOR_INDEX);
_astoreIterator = new ASTORE(ITERATOR_INDEX);
il.append(new ACONST_NULL());
il.append(storeIterator());
}
Example 7
| Source File: SlotAllocator.java From Bytecoder with Apache License 2.0 | 6 votes |
|
public void releaseSlot(LocalVariableGen lvg) {
final int size = lvg.getType().getSize();
final int slot = lvg.getIndex();
final int limit = _free;
for (int i = 0; i < limit; i++) {
if (_slotsTaken[i] == slot) {
int j = i + size;
while (j < limit) {
_slotsTaken[i++] = _slotsTaken[j++];
}
_free -= size;
return;
}
}
String state = "Variable slot allocation error"+
"(size="+size+", slot="+slot+", limit="+limit+")";
ErrorMsg err = new ErrorMsg(ErrorMsg.INTERNAL_ERR, state);
throw new Error(err.toString());
}
Example 8
| Source File: CompareGenerator.java From jdk8u60 with GNU General Public License v2.0 | 6 votes |
|
public CompareGenerator(int access_flags, Type return_type,
Type[] arg_types, String[] arg_names,
String method_name, String class_name,
InstructionList il, ConstantPoolGen cp) {
super(access_flags, return_type, arg_types, arg_names, method_name,
class_name, il, cp);
_iloadCurrent = new ILOAD(CURRENT_INDEX);
_istoreCurrent = new ISTORE(CURRENT_INDEX);
_aloadDom = new ALOAD(DOM_INDEX);
_iloadLast = new ILOAD(LAST_INDEX);
LocalVariableGen iterator =
addLocalVariable("iterator",
Util.getJCRefType(Constants.NODE_ITERATOR_SIG),
null, null);
ITERATOR_INDEX = iterator.getIndex();
_aloadIterator = new ALOAD(ITERATOR_INDEX);
_astoreIterator = new ASTORE(ITERATOR_INDEX);
il.append(new ACONST_NULL());
il.append(storeIterator());
}
Example 9
| Source File: SlotAllocator.java From hottub with GNU General Public License v2.0 | 6 votes |
|
public void releaseSlot(LocalVariableGen lvg) {
final int size = lvg.getType().getSize();
final int slot = lvg.getIndex();
final int limit = _free;
for (int i = 0; i < limit; i++) {
if (_slotsTaken[i] == slot) {
int j = i + size;
while (j < limit) {
_slotsTaken[i++] = _slotsTaken[j++];
}
_free -= size;
return;
}
}
String state = "Variable slot allocation error"+
"(size="+size+", slot="+slot+", limit="+limit+")";
ErrorMsg err = new ErrorMsg(ErrorMsg.INTERNAL_ERR, state);
throw new Error(err.toString());
}
Example 10
| Source File: MethodGenerator.java From openjdk-jdk9 with GNU General Public License v2.0 | 5 votes |
|
/**
* Registers a {@link org.apache.bcel.generic.LocalVariableGen}
* for this method.
* <p><b>Preconditions:</b>
* <ul>
* <li>The range of instructions for <code>lvg</code> does not
* overlap with the range of instructions for any
* <code>LocalVariableGen</code> with the same slot index previously
* registered for this method. <b><em>(Unchecked.)</em></b></li>
* </ul></p>
* @param lvg The variable to be registered
*/
protected void registerLocalVariable(LocalVariableGen lvg) {
int slot = lvg.getIndex();
int registrySize = _variables.size();
// If the LocalVariableGen uses a slot index beyond any previously
// encountered, expand the _variables, padding with intervening null
// entries as required.
if (slot >= registrySize) {
for (int i = registrySize; i < slot; i++) {
_variables.add(null);
}
_variables.add(lvg);
} else {
// If the LocalVariableGen reuses a slot, make sure the entry
// in _variables contains an ArrayList and add the newly
// registered LocalVariableGen to the list. If the entry in
// _variables just contains null padding, store the
// LocalVariableGen directly.
Object localsInSlot = _variables.get(slot);
if (localsInSlot != null) {
if (localsInSlot instanceof LocalVariableGen) {
ArrayList listOfLocalsInSlot = new ArrayList();
listOfLocalsInSlot.add(localsInSlot);
listOfLocalsInSlot.add(lvg);
_variables.set(slot, listOfLocalsInSlot);
} else {
((ArrayList) localsInSlot).add(lvg);
}
} else {
_variables.set(slot, lvg);
}
}
registerByName(lvg);
}
Example 11
| Source File: MethodGenerator.java From openjdk-jdk8u-backup with GNU General Public License v2.0 | 5 votes |
|
/**
* Registers a {@link org.apache.bcel.generic.LocalVariableGen}
* for this method.
* <p><b>Preconditions:</b>
* <ul>
* <li>The range of instructions for <code>lvg</code> does not
* overlap with the range of instructions for any
* <code>LocalVariableGen</code> with the same slot index previously
* registered for this method. <b><em>(Unchecked.)</em></b></li>
* </ul></p>
* @param lvg The variable to be registered
*/
protected void registerLocalVariable(LocalVariableGen lvg) {
int slot = lvg.getIndex();
int registrySize = _variables.size();
// If the LocalVariableGen uses a slot index beyond any previously
// encountered, expand the _variables, padding with intervening null
// entries as required.
if (slot >= registrySize) {
for (int i = registrySize; i < slot; i++) {
_variables.add(null);
}
_variables.add(lvg);
} else {
// If the LocalVariableGen reuses a slot, make sure the entry
// in _variables contains an ArrayList and add the newly
// registered LocalVariableGen to the list. If the entry in
// _variables just contains null padding, store the
// LocalVariableGen directly.
Object localsInSlot = _variables.get(slot);
if (localsInSlot != null) {
if (localsInSlot instanceof LocalVariableGen) {
ArrayList listOfLocalsInSlot = new ArrayList();
listOfLocalsInSlot.add(localsInSlot);
listOfLocalsInSlot.add(lvg);
_variables.set(slot, listOfLocalsInSlot);
} else {
((ArrayList) localsInSlot).add(lvg);
}
} else {
_variables.set(slot, lvg);
}
}
registerByName(lvg);
}
Example 12
| Source File: MethodGenerator.java From openjdk-jdk8u with GNU General Public License v2.0 | 5 votes |
|
/**
* Registers a {@link org.apache.bcel.generic.LocalVariableGen}
* for this method.
* <p><b>Preconditions:</b>
* <ul>
* <li>The range of instructions for <code>lvg</code> does not
* overlap with the range of instructions for any
* <code>LocalVariableGen</code> with the same slot index previously
* registered for this method. <b><em>(Unchecked.)</em></b></li>
* </ul></p>
* @param lvg The variable to be registered
*/
protected void registerLocalVariable(LocalVariableGen lvg) {
int slot = lvg.getIndex();
int registrySize = _variables.size();
// If the LocalVariableGen uses a slot index beyond any previously
// encountered, expand the _variables, padding with intervening null
// entries as required.
if (slot >= registrySize) {
for (int i = registrySize; i < slot; i++) {
_variables.add(null);
}
_variables.add(lvg);
} else {
// If the LocalVariableGen reuses a slot, make sure the entry
// in _variables contains an ArrayList and add the newly
// registered LocalVariableGen to the list. If the entry in
// _variables just contains null padding, store the
// LocalVariableGen directly.
Object localsInSlot = _variables.get(slot);
if (localsInSlot != null) {
if (localsInSlot instanceof LocalVariableGen) {
ArrayList listOfLocalsInSlot = new ArrayList();
listOfLocalsInSlot.add(localsInSlot);
listOfLocalsInSlot.add(lvg);
_variables.set(slot, listOfLocalsInSlot);
} else {
((ArrayList) localsInSlot).add(lvg);
}
} else {
_variables.set(slot, lvg);
}
}
registerByName(lvg);
}
Example 13
| Source File: MethodGenerator.java From openjdk-8 with GNU General Public License v2.0 | 5 votes |
|
/**
* Registers a {@link org.apache.bcel.generic.LocalVariableGen}
* for this method.
* <p><b>Preconditions:</b>
* <ul>
* <li>The range of instructions for <code>lvg</code> does not
* overlap with the range of instructions for any
* <code>LocalVariableGen</code> with the same slot index previously
* registered for this method. <b><em>(Unchecked.)</em></b></li>
* </ul></p>
* @param lvg The variable to be registered
*/
protected void registerLocalVariable(LocalVariableGen lvg) {
int slot = lvg.getIndex();
int registrySize = _variables.size();
// If the LocalVariableGen uses a slot index beyond any previously
// encountered, expand the _variables, padding with intervening null
// entries as required.
if (slot >= registrySize) {
for (int i = registrySize; i < slot; i++) {
_variables.add(null);
}
_variables.add(lvg);
} else {
// If the LocalVariableGen reuses a slot, make sure the entry
// in _variables contains an ArrayList and add the newly
// registered LocalVariableGen to the list. If the entry in
// _variables just contains null padding, store the
// LocalVariableGen directly.
Object localsInSlot = _variables.get(slot);
if (localsInSlot != null) {
if (localsInSlot instanceof LocalVariableGen) {
ArrayList listOfLocalsInSlot = new ArrayList();
listOfLocalsInSlot.add(localsInSlot);
listOfLocalsInSlot.add(lvg);
_variables.set(slot, listOfLocalsInSlot);
} else {
((ArrayList) localsInSlot).add(lvg);
}
} else {
_variables.set(slot, lvg);
}
}
registerByName(lvg);
}
Example 14
| Source File: AncestorPattern.java From openjdk-jdk9 with GNU General Public License v2.0 | 4 votes |
|
public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
InstructionHandle parent;
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
/*
* The scope of this local var must be the entire method since
* a another pattern may decide to jump back into the loop
*/
final LocalVariableGen local =
methodGen.addLocalVariable2("app", Util.getJCRefType(NODE_SIG),
il.getEnd());
final com.sun.org.apache.bcel.internal.generic.Instruction loadLocal =
new ILOAD(local.getIndex());
final com.sun.org.apache.bcel.internal.generic.Instruction storeLocal =
new ISTORE(local.getIndex());
if (_right instanceof StepPattern) {
il.append(DUP);
il.append(storeLocal);
_right.translate(classGen, methodGen);
il.append(methodGen.loadDOM());
il.append(loadLocal);
}
else {
_right.translate(classGen, methodGen);
if (_right instanceof AncestorPattern) {
il.append(methodGen.loadDOM());
il.append(SWAP);
}
}
if (_left != null) {
final int getParent = cpg.addInterfaceMethodref(DOM_INTF,
GET_PARENT,
GET_PARENT_SIG);
parent = il.append(new INVOKEINTERFACE(getParent, 2));
il.append(DUP);
il.append(storeLocal);
_falseList.add(il.append(new IFLT(null)));
il.append(loadLocal);
_left.translate(classGen, methodGen);
final SyntaxTreeNode p = getParent();
if (p == null || p instanceof Instruction ||
p instanceof TopLevelElement)
{
// do nothing
}
else {
il.append(loadLocal);
}
final BranchHandle exit = il.append(new GOTO(null));
_loop = il.append(methodGen.loadDOM());
il.append(loadLocal);
local.setEnd(_loop);
il.append(new GOTO(parent));
exit.setTarget(il.append(NOP));
_left.backPatchFalseList(_loop);
_trueList.append(_left._trueList);
}
else {
il.append(POP2);
}
/*
* If _right is an ancestor pattern, backpatch this pattern's false
* list to the loop that searches for more ancestors.
*/
if (_right instanceof AncestorPattern) {
final AncestorPattern ancestor = (AncestorPattern) _right;
_falseList.backPatch(ancestor.getLoopHandle()); // clears list
}
_trueList.append(_right._trueList);
_falseList.append(_right._falseList);
}
Example 15
| Source File: ParentPattern.java From hottub with GNU General Public License v2.0 | 4 votes |
|
public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
final LocalVariableGen local =
methodGen.addLocalVariable2("ppt",
Util.getJCRefType(NODE_SIG),
null);
final com.sun.org.apache.bcel.internal.generic.Instruction loadLocal =
new ILOAD(local.getIndex());
final com.sun.org.apache.bcel.internal.generic.Instruction storeLocal =
new ISTORE(local.getIndex());
if (_right.isWildcard()) {
il.append(methodGen.loadDOM());
il.append(SWAP);
}
else if (_right instanceof StepPattern) {
il.append(DUP);
local.setStart(il.append(storeLocal));
_right.translate(classGen, methodGen);
il.append(methodGen.loadDOM());
local.setEnd(il.append(loadLocal));
}
else {
_right.translate(classGen, methodGen);
if (_right instanceof AncestorPattern) {
il.append(methodGen.loadDOM());
il.append(SWAP);
}
}
final int getParent = cpg.addInterfaceMethodref(DOM_INTF,
GET_PARENT,
GET_PARENT_SIG);
il.append(new INVOKEINTERFACE(getParent, 2));
final SyntaxTreeNode p = getParent();
if (p == null || p instanceof Instruction ||
p instanceof TopLevelElement)
{
_left.translate(classGen, methodGen);
}
else {
il.append(DUP);
InstructionHandle storeInst = il.append(storeLocal);
if (local.getStart() == null) {
local.setStart(storeInst);
}
_left.translate(classGen, methodGen);
il.append(methodGen.loadDOM());
local.setEnd(il.append(loadLocal));
}
methodGen.removeLocalVariable(local);
/*
* If _right is an ancestor pattern, backpatch _left false
* list to the loop that searches for more ancestors.
*/
if (_right instanceof AncestorPattern) {
final AncestorPattern ancestor = (AncestorPattern) _right;
_left.backPatchFalseList(ancestor.getLoopHandle()); // clears list
}
_trueList.append(_right._trueList.append(_left._trueList));
_falseList.append(_right._falseList.append(_left._falseList));
}
Example 16
| Source File: ParentPattern.java From openjdk-jdk8u-backup with GNU General Public License v2.0 | 4 votes |
|
public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
final LocalVariableGen local =
methodGen.addLocalVariable2("ppt",
Util.getJCRefType(NODE_SIG),
null);
final com.sun.org.apache.bcel.internal.generic.Instruction loadLocal =
new ILOAD(local.getIndex());
final com.sun.org.apache.bcel.internal.generic.Instruction storeLocal =
new ISTORE(local.getIndex());
if (_right.isWildcard()) {
il.append(methodGen.loadDOM());
il.append(SWAP);
}
else if (_right instanceof StepPattern) {
il.append(DUP);
local.setStart(il.append(storeLocal));
_right.translate(classGen, methodGen);
il.append(methodGen.loadDOM());
local.setEnd(il.append(loadLocal));
}
else {
_right.translate(classGen, methodGen);
if (_right instanceof AncestorPattern) {
il.append(methodGen.loadDOM());
il.append(SWAP);
}
}
final int getParent = cpg.addInterfaceMethodref(DOM_INTF,
GET_PARENT,
GET_PARENT_SIG);
il.append(new INVOKEINTERFACE(getParent, 2));
final SyntaxTreeNode p = getParent();
if (p == null || p instanceof Instruction ||
p instanceof TopLevelElement)
{
_left.translate(classGen, methodGen);
}
else {
il.append(DUP);
InstructionHandle storeInst = il.append(storeLocal);
if (local.getStart() == null) {
local.setStart(storeInst);
}
_left.translate(classGen, methodGen);
il.append(methodGen.loadDOM());
local.setEnd(il.append(loadLocal));
}
methodGen.removeLocalVariable(local);
/*
* If _right is an ancestor pattern, backpatch _left false
* list to the loop that searches for more ancestors.
*/
if (_right instanceof AncestorPattern) {
final AncestorPattern ancestor = (AncestorPattern) _right;
_left.backPatchFalseList(ancestor.getLoopHandle()); // clears list
}
_trueList.append(_right._trueList.append(_left._trueList));
_falseList.append(_right._falseList.append(_left._falseList));
}
Example 17
| Source File: AncestorPattern.java From jdk8u60 with GNU General Public License v2.0 | 4 votes |
|
public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
InstructionHandle parent;
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
/*
* The scope of this local var must be the entire method since
* a another pattern may decide to jump back into the loop
*/
final LocalVariableGen local =
methodGen.addLocalVariable2("app", Util.getJCRefType(NODE_SIG),
il.getEnd());
final com.sun.org.apache.bcel.internal.generic.Instruction loadLocal =
new ILOAD(local.getIndex());
final com.sun.org.apache.bcel.internal.generic.Instruction storeLocal =
new ISTORE(local.getIndex());
if (_right instanceof StepPattern) {
il.append(DUP);
il.append(storeLocal);
_right.translate(classGen, methodGen);
il.append(methodGen.loadDOM());
il.append(loadLocal);
}
else {
_right.translate(classGen, methodGen);
if (_right instanceof AncestorPattern) {
il.append(methodGen.loadDOM());
il.append(SWAP);
}
}
if (_left != null) {
final int getParent = cpg.addInterfaceMethodref(DOM_INTF,
GET_PARENT,
GET_PARENT_SIG);
parent = il.append(new INVOKEINTERFACE(getParent, 2));
il.append(DUP);
il.append(storeLocal);
_falseList.add(il.append(new IFLT(null)));
il.append(loadLocal);
_left.translate(classGen, methodGen);
final SyntaxTreeNode p = getParent();
if (p == null || p instanceof Instruction ||
p instanceof TopLevelElement)
{
// do nothing
}
else {
il.append(loadLocal);
}
final BranchHandle exit = il.append(new GOTO(null));
_loop = il.append(methodGen.loadDOM());
il.append(loadLocal);
local.setEnd(_loop);
il.append(new GOTO(parent));
exit.setTarget(il.append(NOP));
_left.backPatchFalseList(_loop);
_trueList.append(_left._trueList);
}
else {
il.append(POP2);
}
/*
* If _right is an ancestor pattern, backpatch this pattern's false
* list to the loop that searches for more ancestors.
*/
if (_right instanceof AncestorPattern) {
final AncestorPattern ancestor = (AncestorPattern) _right;
_falseList.backPatch(ancestor.getLoopHandle()); // clears list
}
_trueList.append(_right._trueList);
_falseList.append(_right._falseList);
}
Example 18
| Source File: ParentPattern.java From openjdk-jdk8u with GNU General Public License v2.0 | 4 votes |
|
public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
final LocalVariableGen local =
methodGen.addLocalVariable2("ppt",
Util.getJCRefType(NODE_SIG),
null);
final com.sun.org.apache.bcel.internal.generic.Instruction loadLocal =
new ILOAD(local.getIndex());
final com.sun.org.apache.bcel.internal.generic.Instruction storeLocal =
new ISTORE(local.getIndex());
if (_right.isWildcard()) {
il.append(methodGen.loadDOM());
il.append(SWAP);
}
else if (_right instanceof StepPattern) {
il.append(DUP);
local.setStart(il.append(storeLocal));
_right.translate(classGen, methodGen);
il.append(methodGen.loadDOM());
local.setEnd(il.append(loadLocal));
}
else {
_right.translate(classGen, methodGen);
if (_right instanceof AncestorPattern) {
il.append(methodGen.loadDOM());
il.append(SWAP);
}
}
final int getParent = cpg.addInterfaceMethodref(DOM_INTF,
GET_PARENT,
GET_PARENT_SIG);
il.append(new INVOKEINTERFACE(getParent, 2));
final SyntaxTreeNode p = getParent();
if (p == null || p instanceof Instruction ||
p instanceof TopLevelElement)
{
_left.translate(classGen, methodGen);
}
else {
il.append(DUP);
InstructionHandle storeInst = il.append(storeLocal);
if (local.getStart() == null) {
local.setStart(storeInst);
}
_left.translate(classGen, methodGen);
il.append(methodGen.loadDOM());
local.setEnd(il.append(loadLocal));
}
methodGen.removeLocalVariable(local);
/*
* If _right is an ancestor pattern, backpatch _left false
* list to the loop that searches for more ancestors.
*/
if (_right instanceof AncestorPattern) {
final AncestorPattern ancestor = (AncestorPattern) _right;
_left.backPatchFalseList(ancestor.getLoopHandle()); // clears list
}
_trueList.append(_right._trueList.append(_left._trueList));
_falseList.append(_right._falseList.append(_left._falseList));
}
Example 19
| Source File: AncestorPattern.java From openjdk-8-source with GNU General Public License v2.0 | 4 votes |
|
public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
InstructionHandle parent;
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
/*
* The scope of this local var must be the entire method since
* a another pattern may decide to jump back into the loop
*/
final LocalVariableGen local =
methodGen.addLocalVariable2("app", Util.getJCRefType(NODE_SIG),
il.getEnd());
final com.sun.org.apache.bcel.internal.generic.Instruction loadLocal =
new ILOAD(local.getIndex());
final com.sun.org.apache.bcel.internal.generic.Instruction storeLocal =
new ISTORE(local.getIndex());
if (_right instanceof StepPattern) {
il.append(DUP);
il.append(storeLocal);
_right.translate(classGen, methodGen);
il.append(methodGen.loadDOM());
il.append(loadLocal);
}
else {
_right.translate(classGen, methodGen);
if (_right instanceof AncestorPattern) {
il.append(methodGen.loadDOM());
il.append(SWAP);
}
}
if (_left != null) {
final int getParent = cpg.addInterfaceMethodref(DOM_INTF,
GET_PARENT,
GET_PARENT_SIG);
parent = il.append(new INVOKEINTERFACE(getParent, 2));
il.append(DUP);
il.append(storeLocal);
_falseList.add(il.append(new IFLT(null)));
il.append(loadLocal);
_left.translate(classGen, methodGen);
final SyntaxTreeNode p = getParent();
if (p == null || p instanceof Instruction ||
p instanceof TopLevelElement)
{
// do nothing
}
else {
il.append(loadLocal);
}
final BranchHandle exit = il.append(new GOTO(null));
_loop = il.append(methodGen.loadDOM());
il.append(loadLocal);
local.setEnd(_loop);
il.append(new GOTO(parent));
exit.setTarget(il.append(NOP));
_left.backPatchFalseList(_loop);
_trueList.append(_left._trueList);
}
else {
il.append(POP2);
}
/*
* If _right is an ancestor pattern, backpatch this pattern's false
* list to the loop that searches for more ancestors.
*/
if (_right instanceof AncestorPattern) {
final AncestorPattern ancestor = (AncestorPattern) _right;
_falseList.backPatch(ancestor.getLoopHandle()); // clears list
}
_trueList.append(_right._trueList);
_falseList.append(_right._falseList);
}
Example 20
| Source File: AncestorPattern.java From openjdk-jdk8u with GNU General Public License v2.0 | 4 votes |
|
public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
InstructionHandle parent;
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
/*
* The scope of this local var must be the entire method since
* a another pattern may decide to jump back into the loop
*/
final LocalVariableGen local =
methodGen.addLocalVariable2("app", Util.getJCRefType(NODE_SIG),
il.getEnd());
final com.sun.org.apache.bcel.internal.generic.Instruction loadLocal =
new ILOAD(local.getIndex());
final com.sun.org.apache.bcel.internal.generic.Instruction storeLocal =
new ISTORE(local.getIndex());
if (_right instanceof StepPattern) {
il.append(DUP);
il.append(storeLocal);
_right.translate(classGen, methodGen);
il.append(methodGen.loadDOM());
il.append(loadLocal);
}
else {
_right.translate(classGen, methodGen);
if (_right instanceof AncestorPattern) {
il.append(methodGen.loadDOM());
il.append(SWAP);
}
}
if (_left != null) {
final int getParent = cpg.addInterfaceMethodref(DOM_INTF,
GET_PARENT,
GET_PARENT_SIG);
parent = il.append(new INVOKEINTERFACE(getParent, 2));
il.append(DUP);
il.append(storeLocal);
_falseList.add(il.append(new IFLT(null)));
il.append(loadLocal);
_left.translate(classGen, methodGen);
final SyntaxTreeNode p = getParent();
if (p == null || p instanceof Instruction ||
p instanceof TopLevelElement)
{
// do nothing
}
else {
il.append(loadLocal);
}
final BranchHandle exit = il.append(new GOTO(null));
_loop = il.append(methodGen.loadDOM());
il.append(loadLocal);
local.setEnd(_loop);
il.append(new GOTO(parent));
exit.setTarget(il.append(NOP));
_left.backPatchFalseList(_loop);
_trueList.append(_left._trueList);
}
else {
il.append(POP2);
}
/*
* If _right is an ancestor pattern, backpatch this pattern's false
* list to the loop that searches for more ancestors.
*/
if (_right instanceof AncestorPattern) {
final AncestorPattern ancestor = (AncestorPattern) _right;
_falseList.backPatch(ancestor.getLoopHandle()); // clears list
}
_trueList.append(_right._trueList);
_falseList.append(_right._falseList);
}
