Java Code Examples for com.sun.org.apache.bcel.internal.generic.LocalVariableGen#setStart()
The following examples show how to use
com.sun.org.apache.bcel.internal.generic.LocalVariableGen#setStart() .
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Example 1
| Source File: RealType.java From openjdk-8-source with GNU General Public License v2.0 | 5 votes |
|
/**
* Translates a real into a non-synthesized boolean. It does not push a
* 0 or a 1 but instead returns branchhandle list to be appended to the
* false list. A NaN must be converted to "false".
*
* @see com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type#translateToDesynthesized
*/
public FlowList translateToDesynthesized(ClassGenerator classGen,
MethodGenerator methodGen,
BooleanType type) {
LocalVariableGen local;
final FlowList flowlist = new FlowList();
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
// Store real into a local variable
il.append(DUP2);
local = methodGen.addLocalVariable("real_to_boolean_tmp",
com.sun.org.apache.bcel.internal.generic.Type.DOUBLE,
null, null);
local.setStart(il.append(new DSTORE(local.getIndex())));
// Compare it to 0.0
il.append(DCONST_0);
il.append(DCMPG);
flowlist.add(il.append(new IFEQ(null)));
//!!! call isNaN
// Compare it to itself to see if NaN
il.append(new DLOAD(local.getIndex()));
local.setEnd(il.append(new DLOAD(local.getIndex())));
il.append(DCMPG);
flowlist.add(il.append(new IFNE(null))); // NaN != NaN
return flowlist;
}
Example 2
| Source File: ParentPattern.java From openjdk-8-source 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 3
| Source File: StepPattern.java From openjdk-8-source with GNU General Public License v2.0 | 4 votes |
|
private void translateSimpleContext(ClassGenerator classGen,
MethodGenerator methodGen) {
int index;
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
// Store matching node into a local variable
LocalVariableGen match;
match = methodGen.addLocalVariable("step_pattern_tmp1",
Util.getJCRefType(NODE_SIG),
null, null);
match.setStart(il.append(new ISTORE(match.getIndex())));
// If pattern not reduced then check kernel
if (!_isEpsilon) {
il.append(new ILOAD(match.getIndex()));
translateKernel(classGen, methodGen);
}
// Push current iterator and current node on the stack
il.append(methodGen.loadCurrentNode());
il.append(methodGen.loadIterator());
// Create a new matching iterator using the matching node
index = cpg.addMethodref(MATCHING_ITERATOR, "<init>",
"(I" + NODE_ITERATOR_SIG + ")V");
// Backwards branches are prohibited if an uninitialized object is
// on the stack by section 4.9.4 of the JVM Specification, 2nd Ed.
// We don't know whether this code might contain backwards branches,
// so we mustn't create the new object until after we've created
// the suspect arguments to its constructor. Instead we calculate
// the values of the arguments to the constructor first, store them
// in temporary variables, create the object and reload the
// arguments from the temporaries to avoid the problem.
_step.translate(classGen, methodGen);
LocalVariableGen stepIteratorTemp =
methodGen.addLocalVariable("step_pattern_tmp2",
Util.getJCRefType(NODE_ITERATOR_SIG),
null, null);
stepIteratorTemp.setStart(
il.append(new ASTORE(stepIteratorTemp.getIndex())));
il.append(new NEW(cpg.addClass(MATCHING_ITERATOR)));
il.append(DUP);
il.append(new ILOAD(match.getIndex()));
stepIteratorTemp.setEnd(
il.append(new ALOAD(stepIteratorTemp.getIndex())));
il.append(new INVOKESPECIAL(index));
// Get the parent of the matching node
il.append(methodGen.loadDOM());
il.append(new ILOAD(match.getIndex()));
index = cpg.addInterfaceMethodref(DOM_INTF, GET_PARENT, GET_PARENT_SIG);
il.append(new INVOKEINTERFACE(index, 2));
// Start the iterator with the parent
il.append(methodGen.setStartNode());
// Overwrite current iterator and current node
il.append(methodGen.storeIterator());
match.setEnd(il.append(new ILOAD(match.getIndex())));
il.append(methodGen.storeCurrentNode());
// Translate the expression of the predicate
Predicate pred = (Predicate) _predicates.elementAt(0);
Expression exp = pred.getExpr();
exp.translateDesynthesized(classGen, methodGen);
// Backpatch true list and restore current iterator/node
InstructionHandle restore = il.append(methodGen.storeIterator());
il.append(methodGen.storeCurrentNode());
exp.backPatchTrueList(restore);
BranchHandle skipFalse = il.append(new GOTO(null));
// Backpatch false list and restore current iterator/node
restore = il.append(methodGen.storeIterator());
il.append(methodGen.storeCurrentNode());
exp.backPatchFalseList(restore);
_falseList.add(il.append(new GOTO(null)));
// True list falls through
skipFalse.setTarget(il.append(NOP));
}
Example 4
| Source File: FilterParentPath.java From openjdk-8 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();
// Create new StepIterator
final int initSI = cpg.addMethodref(STEP_ITERATOR_CLASS,
"<init>",
"("
+NODE_ITERATOR_SIG
+NODE_ITERATOR_SIG
+")V");
// Backwards branches are prohibited if an uninitialized object is
// on the stack by section 4.9.4 of the JVM Specification, 2nd Ed.
// We don't know whether this code might contain backwards branches,
// so we mustn't create the new object until after we've created
// the suspect arguments to its constructor. Instead we calculate
// the values of the arguments to the constructor first, store them
// in temporary variables, create the object and reload the
// arguments from the temporaries to avoid the problem.
// Recursively compile 2 iterators
_filterExpr.translate(classGen, methodGen);
LocalVariableGen filterTemp =
methodGen.addLocalVariable("filter_parent_path_tmp1",
Util.getJCRefType(NODE_ITERATOR_SIG),
null, null);
filterTemp.setStart(il.append(new ASTORE(filterTemp.getIndex())));
_path.translate(classGen, methodGen);
LocalVariableGen pathTemp =
methodGen.addLocalVariable("filter_parent_path_tmp2",
Util.getJCRefType(NODE_ITERATOR_SIG),
null, null);
pathTemp.setStart(il.append(new ASTORE(pathTemp.getIndex())));
il.append(new NEW(cpg.addClass(STEP_ITERATOR_CLASS)));
il.append(DUP);
filterTemp.setEnd(il.append(new ALOAD(filterTemp.getIndex())));
pathTemp.setEnd(il.append(new ALOAD(pathTemp.getIndex())));
// Initialize StepIterator with iterators from the stack
il.append(new INVOKESPECIAL(initSI));
// This is a special case for the //* path with or without predicates
if (_hasDescendantAxis) {
final int incl = cpg.addMethodref(NODE_ITERATOR_BASE,
"includeSelf",
"()" + NODE_ITERATOR_SIG);
il.append(new INVOKEVIRTUAL(incl));
}
SyntaxTreeNode parent = getParent();
boolean parentAlreadyOrdered =
(parent instanceof RelativeLocationPath)
|| (parent instanceof FilterParentPath)
|| (parent instanceof KeyCall)
|| (parent instanceof CurrentCall)
|| (parent instanceof DocumentCall);
if (!parentAlreadyOrdered) {
final int order = cpg.addInterfaceMethodref(DOM_INTF,
ORDER_ITERATOR,
ORDER_ITERATOR_SIG);
il.append(methodGen.loadDOM());
il.append(SWAP);
il.append(methodGen.loadContextNode());
il.append(new INVOKEINTERFACE(order, 3));
}
}
Example 5
| Source File: Sort.java From openjdk-8 with GNU General Public License v2.0 | 4 votes |
|
/**
* Compiles code that instantiates a SortingIterator object.
* This object's constructor needs referencdes to the current iterator
* and a node sort record producing objects as its parameters.
*/
public static void translateSortIterator(ClassGenerator classGen,
MethodGenerator methodGen,
Expression nodeSet,
Vector sortObjects)
{
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
// SortingIterator.SortingIterator(NodeIterator,NodeSortRecordFactory);
final int init = cpg.addMethodref(SORT_ITERATOR, "<init>",
"("
+ NODE_ITERATOR_SIG
+ NODE_SORT_FACTORY_SIG
+ ")V");
// Backwards branches are prohibited if an uninitialized object is
// on the stack by section 4.9.4 of the JVM Specification, 2nd Ed.
// We don't know whether this code might contain backwards branches
// so we mustn't create the new object until after we've created
// the suspect arguments to its constructor. Instead we calculate
// the values of the arguments to the constructor first, store them
// in temporary variables, create the object and reload the
// arguments from the temporaries to avoid the problem.
LocalVariableGen nodesTemp =
methodGen.addLocalVariable("sort_tmp1",
Util.getJCRefType(NODE_ITERATOR_SIG),
null, null);
LocalVariableGen sortRecordFactoryTemp =
methodGen.addLocalVariable("sort_tmp2",
Util.getJCRefType(NODE_SORT_FACTORY_SIG),
null, null);
// Get the current node iterator
if (nodeSet == null) { // apply-templates default
final int children = cpg.addInterfaceMethodref(DOM_INTF,
"getAxisIterator",
"(I)"+
NODE_ITERATOR_SIG);
il.append(methodGen.loadDOM());
il.append(new PUSH(cpg, Axis.CHILD));
il.append(new INVOKEINTERFACE(children, 2));
}
else {
nodeSet.translate(classGen, methodGen);
}
nodesTemp.setStart(il.append(new ASTORE(nodesTemp.getIndex())));
// Compile the code for the NodeSortRecord producing class and pass
// that as the last argument to the SortingIterator constructor.
compileSortRecordFactory(sortObjects, classGen, methodGen);
sortRecordFactoryTemp.setStart(
il.append(new ASTORE(sortRecordFactoryTemp.getIndex())));
il.append(new NEW(cpg.addClass(SORT_ITERATOR)));
il.append(DUP);
nodesTemp.setEnd(il.append(new ALOAD(nodesTemp.getIndex())));
sortRecordFactoryTemp.setEnd(
il.append(new ALOAD(sortRecordFactoryTemp.getIndex())));
il.append(new INVOKESPECIAL(init));
}
Example 6
| Source File: StepPattern.java From openjdk-8 with GNU General Public License v2.0 | 4 votes |
|
private void translateSimpleContext(ClassGenerator classGen,
MethodGenerator methodGen) {
int index;
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
// Store matching node into a local variable
LocalVariableGen match;
match = methodGen.addLocalVariable("step_pattern_tmp1",
Util.getJCRefType(NODE_SIG),
null, null);
match.setStart(il.append(new ISTORE(match.getIndex())));
// If pattern not reduced then check kernel
if (!_isEpsilon) {
il.append(new ILOAD(match.getIndex()));
translateKernel(classGen, methodGen);
}
// Push current iterator and current node on the stack
il.append(methodGen.loadCurrentNode());
il.append(methodGen.loadIterator());
// Create a new matching iterator using the matching node
index = cpg.addMethodref(MATCHING_ITERATOR, "<init>",
"(I" + NODE_ITERATOR_SIG + ")V");
// Backwards branches are prohibited if an uninitialized object is
// on the stack by section 4.9.4 of the JVM Specification, 2nd Ed.
// We don't know whether this code might contain backwards branches,
// so we mustn't create the new object until after we've created
// the suspect arguments to its constructor. Instead we calculate
// the values of the arguments to the constructor first, store them
// in temporary variables, create the object and reload the
// arguments from the temporaries to avoid the problem.
_step.translate(classGen, methodGen);
LocalVariableGen stepIteratorTemp =
methodGen.addLocalVariable("step_pattern_tmp2",
Util.getJCRefType(NODE_ITERATOR_SIG),
null, null);
stepIteratorTemp.setStart(
il.append(new ASTORE(stepIteratorTemp.getIndex())));
il.append(new NEW(cpg.addClass(MATCHING_ITERATOR)));
il.append(DUP);
il.append(new ILOAD(match.getIndex()));
stepIteratorTemp.setEnd(
il.append(new ALOAD(stepIteratorTemp.getIndex())));
il.append(new INVOKESPECIAL(index));
// Get the parent of the matching node
il.append(methodGen.loadDOM());
il.append(new ILOAD(match.getIndex()));
index = cpg.addInterfaceMethodref(DOM_INTF, GET_PARENT, GET_PARENT_SIG);
il.append(new INVOKEINTERFACE(index, 2));
// Start the iterator with the parent
il.append(methodGen.setStartNode());
// Overwrite current iterator and current node
il.append(methodGen.storeIterator());
match.setEnd(il.append(new ILOAD(match.getIndex())));
il.append(methodGen.storeCurrentNode());
// Translate the expression of the predicate
Predicate pred = (Predicate) _predicates.elementAt(0);
Expression exp = pred.getExpr();
exp.translateDesynthesized(classGen, methodGen);
// Backpatch true list and restore current iterator/node
InstructionHandle restore = il.append(methodGen.storeIterator());
il.append(methodGen.storeCurrentNode());
exp.backPatchTrueList(restore);
BranchHandle skipFalse = il.append(new GOTO(null));
// Backpatch false list and restore current iterator/node
restore = il.append(methodGen.storeIterator());
il.append(methodGen.storeCurrentNode());
exp.backPatchFalseList(restore);
_falseList.add(il.append(new GOTO(null)));
// True list falls through
skipFalse.setTarget(il.append(NOP));
}
Example 7
| Source File: Sort.java From openjdk-jdk8u with GNU General Public License v2.0 | 4 votes |
|
/**
* Compiles code that instantiates a SortingIterator object.
* This object's constructor needs referencdes to the current iterator
* and a node sort record producing objects as its parameters.
*/
public static void translateSortIterator(ClassGenerator classGen,
MethodGenerator methodGen,
Expression nodeSet,
Vector<Sort> sortObjects)
{
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
// SortingIterator.SortingIterator(NodeIterator,NodeSortRecordFactory);
final int init = cpg.addMethodref(SORT_ITERATOR, "<init>",
"("
+ NODE_ITERATOR_SIG
+ NODE_SORT_FACTORY_SIG
+ ")V");
// Backwards branches are prohibited if an uninitialized object is
// on the stack by section 4.9.4 of the JVM Specification, 2nd Ed.
// We don't know whether this code might contain backwards branches
// so we mustn't create the new object until after we've created
// the suspect arguments to its constructor. Instead we calculate
// the values of the arguments to the constructor first, store them
// in temporary variables, create the object and reload the
// arguments from the temporaries to avoid the problem.
LocalVariableGen nodesTemp =
methodGen.addLocalVariable("sort_tmp1",
Util.getJCRefType(NODE_ITERATOR_SIG),
null, null);
LocalVariableGen sortRecordFactoryTemp =
methodGen.addLocalVariable("sort_tmp2",
Util.getJCRefType(NODE_SORT_FACTORY_SIG),
null, null);
// Get the current node iterator
if (nodeSet == null) { // apply-templates default
final int children = cpg.addInterfaceMethodref(DOM_INTF,
"getAxisIterator",
"(I)"+
NODE_ITERATOR_SIG);
il.append(methodGen.loadDOM());
il.append(new PUSH(cpg, Axis.CHILD));
il.append(new INVOKEINTERFACE(children, 2));
}
else {
nodeSet.translate(classGen, methodGen);
}
nodesTemp.setStart(il.append(new ASTORE(nodesTemp.getIndex())));
// Compile the code for the NodeSortRecord producing class and pass
// that as the last argument to the SortingIterator constructor.
compileSortRecordFactory(sortObjects, classGen, methodGen);
sortRecordFactoryTemp.setStart(
il.append(new ASTORE(sortRecordFactoryTemp.getIndex())));
il.append(new NEW(cpg.addClass(SORT_ITERATOR)));
il.append(DUP);
nodesTemp.setEnd(il.append(new ALOAD(nodesTemp.getIndex())));
sortRecordFactoryTemp.setEnd(
il.append(new ALOAD(sortRecordFactoryTemp.getIndex())));
il.append(new INVOKESPECIAL(init));
}
Example 8
| Source File: AbsolutePathPattern.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();
if (_left != null) {
if (_left instanceof StepPattern) {
final LocalVariableGen local =
// absolute path pattern temporary
methodGen.addLocalVariable2("apptmp",
Util.getJCRefType(NODE_SIG),
null);
il.append(DUP);
local.setStart(il.append(new ISTORE(local.getIndex())));
_left.translate(classGen, methodGen);
il.append(methodGen.loadDOM());
local.setEnd(il.append(new ILOAD(local.getIndex())));
methodGen.removeLocalVariable(local);
}
else {
_left.translate(classGen, methodGen);
}
}
final int getParent = cpg.addInterfaceMethodref(DOM_INTF,
GET_PARENT,
GET_PARENT_SIG);
final int getType = cpg.addInterfaceMethodref(DOM_INTF,
"getExpandedTypeID",
"(I)I");
InstructionHandle begin = il.append(methodGen.loadDOM());
il.append(SWAP);
il.append(new INVOKEINTERFACE(getParent, 2));
if (_left instanceof AncestorPattern) {
il.append(methodGen.loadDOM());
il.append(SWAP);
}
il.append(new INVOKEINTERFACE(getType, 2));
il.append(new PUSH(cpg, DTM.DOCUMENT_NODE));
final BranchHandle skip = il.append(new IF_ICMPEQ(null));
_falseList.add(il.append(new GOTO_W(null)));
skip.setTarget(il.append(NOP));
if (_left != null) {
_left.backPatchTrueList(begin);
/*
* If _left is an ancestor pattern, backpatch this pattern's false
* list to the loop that searches for more ancestors.
*/
if (_left instanceof AncestorPattern) {
final AncestorPattern ancestor = (AncestorPattern) _left;
_falseList.backPatch(ancestor.getLoopHandle()); // clears list
}
_falseList.append(_left._falseList);
}
}
Example 9
| Source File: FilterParentPath.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();
// Create new StepIterator
final int initSI = cpg.addMethodref(STEP_ITERATOR_CLASS,
"<init>",
"("
+NODE_ITERATOR_SIG
+NODE_ITERATOR_SIG
+")V");
// Backwards branches are prohibited if an uninitialized object is
// on the stack by section 4.9.4 of the JVM Specification, 2nd Ed.
// We don't know whether this code might contain backwards branches,
// so we mustn't create the new object until after we've created
// the suspect arguments to its constructor. Instead we calculate
// the values of the arguments to the constructor first, store them
// in temporary variables, create the object and reload the
// arguments from the temporaries to avoid the problem.
// Recursively compile 2 iterators
_filterExpr.translate(classGen, methodGen);
LocalVariableGen filterTemp =
methodGen.addLocalVariable("filter_parent_path_tmp1",
Util.getJCRefType(NODE_ITERATOR_SIG),
null, null);
filterTemp.setStart(il.append(new ASTORE(filterTemp.getIndex())));
_path.translate(classGen, methodGen);
LocalVariableGen pathTemp =
methodGen.addLocalVariable("filter_parent_path_tmp2",
Util.getJCRefType(NODE_ITERATOR_SIG),
null, null);
pathTemp.setStart(il.append(new ASTORE(pathTemp.getIndex())));
il.append(new NEW(cpg.addClass(STEP_ITERATOR_CLASS)));
il.append(DUP);
filterTemp.setEnd(il.append(new ALOAD(filterTemp.getIndex())));
pathTemp.setEnd(il.append(new ALOAD(pathTemp.getIndex())));
// Initialize StepIterator with iterators from the stack
il.append(new INVOKESPECIAL(initSI));
// This is a special case for the //* path with or without predicates
if (_hasDescendantAxis) {
final int incl = cpg.addMethodref(NODE_ITERATOR_BASE,
"includeSelf",
"()" + NODE_ITERATOR_SIG);
il.append(new INVOKEVIRTUAL(incl));
}
SyntaxTreeNode parent = getParent();
boolean parentAlreadyOrdered =
(parent instanceof RelativeLocationPath)
|| (parent instanceof FilterParentPath)
|| (parent instanceof KeyCall)
|| (parent instanceof CurrentCall)
|| (parent instanceof DocumentCall);
if (!parentAlreadyOrdered) {
final int order = cpg.addInterfaceMethodref(DOM_INTF,
ORDER_ITERATOR,
ORDER_ITERATOR_SIG);
il.append(methodGen.loadDOM());
il.append(SWAP);
il.append(methodGen.loadContextNode());
il.append(new INVOKEINTERFACE(order, 3));
}
}
Example 10
| Source File: ParentLocationPath.java From TencentKona-8 with GNU General Public License v2.0 | 4 votes |
|
public void translateStep(ClassGenerator classGen, MethodGenerator methodGen) {
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
// Backwards branches are prohibited if an uninitialized object is
// on the stack by section 4.9.4 of the JVM Specification, 2nd Ed.
// We don't know whether this code might contain backwards branches
// so we mustn't create the new object until after we've created
// the suspect arguments to its constructor. Instead we calculate
// the values of the arguments to the constructor first, store them
// in temporary variables, create the object and reload the
// arguments from the temporaries to avoid the problem.
LocalVariableGen pathTemp
= methodGen.addLocalVariable("parent_location_path_tmp1",
Util.getJCRefType(NODE_ITERATOR_SIG),
null, null);
pathTemp.setStart(il.append(new ASTORE(pathTemp.getIndex())));
_step.translate(classGen, methodGen);
LocalVariableGen stepTemp
= methodGen.addLocalVariable("parent_location_path_tmp2",
Util.getJCRefType(NODE_ITERATOR_SIG),
null, null);
stepTemp.setStart(il.append(new ASTORE(stepTemp.getIndex())));
// Create new StepIterator
final int initSI = cpg.addMethodref(STEP_ITERATOR_CLASS,
"<init>",
"("
+NODE_ITERATOR_SIG
+NODE_ITERATOR_SIG
+")V");
il.append(new NEW(cpg.addClass(STEP_ITERATOR_CLASS)));
il.append(DUP);
pathTemp.setEnd(il.append(new ALOAD(pathTemp.getIndex())));
stepTemp.setEnd(il.append(new ALOAD(stepTemp.getIndex())));
// Initialize StepIterator with iterators from the stack
il.append(new INVOKESPECIAL(initSI));
// This is a special case for the //* path with or without predicates
Expression stp = _step;
if (stp instanceof ParentLocationPath)
stp = ((ParentLocationPath)stp).getStep();
if ((_path instanceof Step) && (stp instanceof Step)) {
final int path = ((Step)_path).getAxis();
final int step = ((Step)stp).getAxis();
if ((path == Axis.DESCENDANTORSELF && step == Axis.CHILD) ||
(path == Axis.PRECEDING && step == Axis.PARENT)) {
final int incl = cpg.addMethodref(NODE_ITERATOR_BASE,
"includeSelf",
"()" + NODE_ITERATOR_SIG);
il.append(new INVOKEVIRTUAL(incl));
}
}
/*
* If this pattern contains a sequence of descendant iterators we
* run the risk of returning the same node several times. We put
* a new iterator on top of the existing one to assure node order
* and prevent returning a single node multiple times.
*/
if (_orderNodes) {
final int order = cpg.addInterfaceMethodref(DOM_INTF,
ORDER_ITERATOR,
ORDER_ITERATOR_SIG);
il.append(methodGen.loadDOM());
il.append(SWAP);
il.append(methodGen.loadContextNode());
il.append(new INVOKEINTERFACE(order, 3));
}
}
Example 11
| Source File: Number.java From openjdk-8 with GNU General Public License v2.0 | 4 votes |
|
/**
* This method compiles code that is common to matchesFrom() and
* matchesCount() in the auxillary class.
*/
private void compileLocals(NodeCounterGenerator nodeCounterGen,
MatchGenerator matchGen,
InstructionList il)
{
int field;
LocalVariableGen local;
ConstantPoolGen cpg = nodeCounterGen.getConstantPool();
// Get NodeCounter._iterator and store locally
local = matchGen.addLocalVariable("iterator",
Util.getJCRefType(NODE_ITERATOR_SIG),
null, null);
field = cpg.addFieldref(NODE_COUNTER, "_iterator",
ITERATOR_FIELD_SIG);
il.append(ALOAD_0); // 'this' pointer on stack
il.append(new GETFIELD(field));
local.setStart(il.append(new ASTORE(local.getIndex())));
matchGen.setIteratorIndex(local.getIndex());
// Get NodeCounter._translet and store locally
local = matchGen.addLocalVariable("translet",
Util.getJCRefType(TRANSLET_SIG),
null, null);
field = cpg.addFieldref(NODE_COUNTER, "_translet",
"Lcom/sun/org/apache/xalan/internal/xsltc/Translet;");
il.append(ALOAD_0); // 'this' pointer on stack
il.append(new GETFIELD(field));
il.append(new CHECKCAST(cpg.addClass(TRANSLET_CLASS)));
local.setStart(il.append(new ASTORE(local.getIndex())));
nodeCounterGen.setTransletIndex(local.getIndex());
// Get NodeCounter._document and store locally
local = matchGen.addLocalVariable("document",
Util.getJCRefType(DOM_INTF_SIG),
null, null);
field = cpg.addFieldref(_className, "_document", DOM_INTF_SIG);
il.append(ALOAD_0); // 'this' pointer on stack
il.append(new GETFIELD(field));
// Make sure we have the correct DOM type on the stack!!!
local.setStart(il.append(new ASTORE(local.getIndex())));
matchGen.setDomIndex(local.getIndex());
}
Example 12
| Source File: ProcessingInstruction.java From openjdk-8 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();
if (!_isLiteral) {
// if the ncname is an AVT, then the ncname has to be checked at runtime if it is a valid ncname
LocalVariableGen nameValue =
methodGen.addLocalVariable2("nameValue",
Util.getJCRefType(STRING_SIG),
null);
// store the name into a variable first so _name.translate only needs to be called once
_name.translate(classGen, methodGen);
nameValue.setStart(il.append(new ASTORE(nameValue.getIndex())));
il.append(new ALOAD(nameValue.getIndex()));
// call checkNCName if the name is an AVT
final int check = cpg.addMethodref(BASIS_LIBRARY_CLASS, "checkNCName",
"("
+STRING_SIG
+")V");
il.append(new INVOKESTATIC(check));
// Save the current handler base on the stack
il.append(methodGen.loadHandler());
il.append(DUP); // first arg to "attributes" call
// load name value again
nameValue.setEnd(il.append(new ALOAD(nameValue.getIndex())));
} else {
// Save the current handler base on the stack
il.append(methodGen.loadHandler());
il.append(DUP); // first arg to "attributes" call
// Push attribute name
_name.translate(classGen, methodGen);// 2nd arg
}
il.append(classGen.loadTranslet());
il.append(new GETFIELD(cpg.addFieldref(TRANSLET_CLASS,
"stringValueHandler",
STRING_VALUE_HANDLER_SIG)));
il.append(DUP);
il.append(methodGen.storeHandler());
// translate contents with substituted handler
translateContents(classGen, methodGen);
// get String out of the handler
il.append(new INVOKEVIRTUAL(cpg.addMethodref(STRING_VALUE_HANDLER,
"getValueOfPI",
"()" + STRING_SIG)));
// call "processingInstruction"
final int processingInstruction =
cpg.addInterfaceMethodref(TRANSLET_OUTPUT_INTERFACE,
"processingInstruction",
"(" + STRING_SIG + STRING_SIG + ")V");
il.append(new INVOKEINTERFACE(processingInstruction, 3));
// Restore old handler base from stack
il.append(methodGen.storeHandler());
}
Example 13
| Source File: FilteredAbsoluteLocationPath.java From openjdk-8 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();
if (_path != null) {
final int initDFI = cpg.addMethodref(DUP_FILTERED_ITERATOR,
"<init>",
"("
+ NODE_ITERATOR_SIG
+ ")V");
// Backwards branches are prohibited if an uninitialized object is
// on the stack by section 4.9.4 of the JVM Specification, 2nd Ed.
// We don't know whether this code might contain backwards branches,
// so we mustn't create the new object until after we've created
// the suspect arguments to its constructor. Instead we calculate
// the values of the arguments to the constructor first, store them
// in temporary variables, create the object and reload the
// arguments from the temporaries to avoid the problem.
// Compile relative path iterator(s)
LocalVariableGen pathTemp =
methodGen.addLocalVariable("filtered_absolute_location_path_tmp",
Util.getJCRefType(NODE_ITERATOR_SIG),
null, null);
_path.translate(classGen, methodGen);
pathTemp.setStart(il.append(new ASTORE(pathTemp.getIndex())));
// Create new Dup Filter Iterator
il.append(new NEW(cpg.addClass(DUP_FILTERED_ITERATOR)));
il.append(DUP);
pathTemp.setEnd(il.append(new ALOAD(pathTemp.getIndex())));
// Initialize Dup Filter Iterator with iterator from the stack
il.append(new INVOKESPECIAL(initDFI));
}
else {
final int git = cpg.addInterfaceMethodref(DOM_INTF,
"getIterator",
"()"+NODE_ITERATOR_SIG);
il.append(methodGen.loadDOM());
il.append(new INVOKEINTERFACE(git, 1));
}
}
Example 14
| Source File: Copy.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 name =
methodGen.addLocalVariable2("name",
Util.getJCRefType(STRING_SIG),
null);
final LocalVariableGen length =
methodGen.addLocalVariable2("length",
Util.getJCRefType("I"),
null);
// Get the name of the node to copy and save for later
il.append(methodGen.loadDOM());
il.append(methodGen.loadCurrentNode());
il.append(methodGen.loadHandler());
final int cpy = cpg.addInterfaceMethodref(DOM_INTF,
"shallowCopy",
"("
+ NODE_SIG
+ TRANSLET_OUTPUT_SIG
+ ")" + STRING_SIG);
il.append(new INVOKEINTERFACE(cpy, 3));
il.append(DUP);
name.setStart(il.append(new ASTORE(name.getIndex())));
final BranchHandle ifBlock1 = il.append(new IFNULL(null));
// Get the length of the node name and save for later
il.append(new ALOAD(name.getIndex()));
final int lengthMethod = cpg.addMethodref(STRING_CLASS,"length","()I");
il.append(new INVOKEVIRTUAL(lengthMethod));
il.append(DUP);
length.setStart(il.append(new ISTORE(length.getIndex())));
// Ignore attribute sets if current node is ROOT. DOM.shallowCopy()
// returns "" for ROOT, so skip attribute sets if length == 0
final BranchHandle ifBlock4 = il.append(new IFEQ(null));
// Copy in attribute sets if specified
if (_useSets != null) {
// If the parent of this element will result in an element being
// output then we know that it is safe to copy out the attributes
final SyntaxTreeNode parent = getParent();
if ((parent instanceof LiteralElement) ||
(parent instanceof LiteralElement)) {
_useSets.translate(classGen, methodGen);
}
// If not we have to check to see if the copy will result in an
// element being output.
else {
// check if element; if not skip to translate body
il.append(new ILOAD(length.getIndex()));
final BranchHandle ifBlock2 = il.append(new IFEQ(null));
// length != 0 -> element -> do attribute sets
_useSets.translate(classGen, methodGen);
// not an element; root
ifBlock2.setTarget(il.append(NOP));
}
}
// Instantiate body of xsl:copy
ifBlock4.setTarget(il.append(NOP));
translateContents(classGen, methodGen);
// Call the output handler's endElement() if we copied an element
// (The DOM.shallowCopy() method calls startElement().)
length.setEnd(il.append(new ILOAD(length.getIndex())));
final BranchHandle ifBlock3 = il.append(new IFEQ(null));
il.append(methodGen.loadHandler());
name.setEnd(il.append(new ALOAD(name.getIndex())));
il.append(methodGen.endElement());
final InstructionHandle end = il.append(NOP);
ifBlock1.setTarget(end);
ifBlock3.setTarget(end);
methodGen.removeLocalVariable(name);
methodGen.removeLocalVariable(length);
}
Example 15
| Source File: ProcessingInstruction.java From JDKSourceCode1.8 with MIT License | 4 votes |
|
public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
if (!_isLiteral) {
// if the ncname is an AVT, then the ncname has to be checked at runtime if it is a valid ncname
LocalVariableGen nameValue =
methodGen.addLocalVariable2("nameValue",
Util.getJCRefType(STRING_SIG),
null);
// store the name into a variable first so _name.translate only needs to be called once
_name.translate(classGen, methodGen);
nameValue.setStart(il.append(new ASTORE(nameValue.getIndex())));
il.append(new ALOAD(nameValue.getIndex()));
// call checkNCName if the name is an AVT
final int check = cpg.addMethodref(BASIS_LIBRARY_CLASS, "checkNCName",
"("
+STRING_SIG
+")V");
il.append(new INVOKESTATIC(check));
// Save the current handler base on the stack
il.append(methodGen.loadHandler());
il.append(DUP); // first arg to "attributes" call
// load name value again
nameValue.setEnd(il.append(new ALOAD(nameValue.getIndex())));
} else {
// Save the current handler base on the stack
il.append(methodGen.loadHandler());
il.append(DUP); // first arg to "attributes" call
// Push attribute name
_name.translate(classGen, methodGen);// 2nd arg
}
il.append(classGen.loadTranslet());
il.append(new GETFIELD(cpg.addFieldref(TRANSLET_CLASS,
"stringValueHandler",
STRING_VALUE_HANDLER_SIG)));
il.append(DUP);
il.append(methodGen.storeHandler());
// translate contents with substituted handler
translateContents(classGen, methodGen);
// get String out of the handler
il.append(new INVOKEVIRTUAL(cpg.addMethodref(STRING_VALUE_HANDLER,
"getValueOfPI",
"()" + STRING_SIG)));
// call "processingInstruction"
final int processingInstruction =
cpg.addInterfaceMethodref(TRANSLET_OUTPUT_INTERFACE,
"processingInstruction",
"(" + STRING_SIG + STRING_SIG + ")V");
il.append(new INVOKEINTERFACE(processingInstruction, 3));
// Restore old handler base from stack
il.append(methodGen.storeHandler());
}
Example 16
| Source File: Key.java From Bytecoder with Apache License 2.0 | 4 votes |
|
/**
* This method is called if the "use" attribute of the key contains a
* node set. In this case we must traverse all nodes in the set and
* create one entry in this key's index for each node in the set.
*/
public void traverseNodeSet(ClassGenerator classGen,
MethodGenerator methodGen,
int buildKeyIndex) {
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
// DOM.getStringValueX(nodeIndex) => String
final int getNodeValue = cpg.addInterfaceMethodref(DOM_INTF,
GET_NODE_VALUE,
"(I)"+STRING_SIG);
final int getNodeIdent = cpg.addInterfaceMethodref(DOM_INTF,
"getNodeIdent",
"(I)"+NODE_SIG);
// AbstractTranslet.SetKeyIndexDom(name, Dom) => void
final int keyDom = cpg.addMethodref(TRANSLET_CLASS,
"setKeyIndexDom",
"("+STRING_SIG+DOM_INTF_SIG+")V");
// This variable holds the id of the node we found with the "match"
// attribute of xsl:key. This is the id we store, with the value we
// get from the nodes we find here, in the index for this key.
final LocalVariableGen parentNode =
methodGen.addLocalVariable("parentNode",
Util.getJCRefType("I"),
null, null);
// Get the 'parameter' from the stack and store it in a local var.
parentNode.setStart(il.append(new ISTORE(parentNode.getIndex())));
// Save current node and current iterator on the stack
il.append(methodGen.loadCurrentNode());
il.append(methodGen.loadIterator());
// Overwrite current iterator with one that gives us only what we want
_use.translate(classGen, methodGen);
_use.startIterator(classGen, methodGen);
il.append(methodGen.storeIterator());
final BranchHandle nextNode = il.append(new GOTO(null));
final InstructionHandle loop = il.append(NOP);
// Prepare to call buildKeyIndex(String name, int node, String value);
il.append(classGen.loadTranslet());
il.append(new PUSH(cpg, _name.toString()));
parentNode.setEnd(il.append(new ILOAD(parentNode.getIndex())));
// Now get the node value and push it on the parameter stack
il.append(methodGen.loadDOM());
il.append(methodGen.loadCurrentNode());
il.append(new INVOKEINTERFACE(getNodeValue, 2));
// Finally do the call to add an entry in the index for this key.
il.append(new INVOKEVIRTUAL(buildKeyIndex));
il.append(classGen.loadTranslet());
il.append(new PUSH(cpg, getName()));
il.append(methodGen.loadDOM());
il.append(new INVOKEVIRTUAL(keyDom));
nextNode.setTarget(il.append(methodGen.loadIterator()));
il.append(methodGen.nextNode());
il.append(DUP);
il.append(methodGen.storeCurrentNode());
il.append(new IFGE(loop)); // Go on to next matching node....
// Restore current node and current iterator from the stack
il.append(methodGen.storeIterator());
il.append(methodGen.storeCurrentNode());
}
Example 17
| Source File: FilteredAbsoluteLocationPath.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();
if (_path != null) {
final int initDFI = cpg.addMethodref(DUP_FILTERED_ITERATOR,
"<init>",
"("
+ NODE_ITERATOR_SIG
+ ")V");
// Backwards branches are prohibited if an uninitialized object is
// on the stack by section 4.9.4 of the JVM Specification, 2nd Ed.
// We don't know whether this code might contain backwards branches,
// so we mustn't create the new object until after we've created
// the suspect arguments to its constructor. Instead we calculate
// the values of the arguments to the constructor first, store them
// in temporary variables, create the object and reload the
// arguments from the temporaries to avoid the problem.
// Compile relative path iterator(s)
LocalVariableGen pathTemp =
methodGen.addLocalVariable("filtered_absolute_location_path_tmp",
Util.getJCRefType(NODE_ITERATOR_SIG),
null, null);
_path.translate(classGen, methodGen);
pathTemp.setStart(il.append(new ASTORE(pathTemp.getIndex())));
// Create new Dup Filter Iterator
il.append(new NEW(cpg.addClass(DUP_FILTERED_ITERATOR)));
il.append(DUP);
pathTemp.setEnd(il.append(new ALOAD(pathTemp.getIndex())));
// Initialize Dup Filter Iterator with iterator from the stack
il.append(new INVOKESPECIAL(initDFI));
}
else {
final int git = cpg.addInterfaceMethodref(DOM_INTF,
"getIterator",
"()"+NODE_ITERATOR_SIG);
il.append(methodGen.loadDOM());
il.append(new INVOKEINTERFACE(git, 1));
}
}
Example 18
| Source File: FilteredAbsoluteLocationPath.java From jdk1.8-source-analysis with Apache License 2.0 | 4 votes |
|
public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
if (_path != null) {
final int initDFI = cpg.addMethodref(DUP_FILTERED_ITERATOR,
"<init>",
"("
+ NODE_ITERATOR_SIG
+ ")V");
// Backwards branches are prohibited if an uninitialized object is
// on the stack by section 4.9.4 of the JVM Specification, 2nd Ed.
// We don't know whether this code might contain backwards branches,
// so we mustn't create the new object until after we've created
// the suspect arguments to its constructor. Instead we calculate
// the values of the arguments to the constructor first, store them
// in temporary variables, create the object and reload the
// arguments from the temporaries to avoid the problem.
// Compile relative path iterator(s)
LocalVariableGen pathTemp =
methodGen.addLocalVariable("filtered_absolute_location_path_tmp",
Util.getJCRefType(NODE_ITERATOR_SIG),
null, null);
_path.translate(classGen, methodGen);
pathTemp.setStart(il.append(new ASTORE(pathTemp.getIndex())));
// Create new Dup Filter Iterator
il.append(new NEW(cpg.addClass(DUP_FILTERED_ITERATOR)));
il.append(DUP);
pathTemp.setEnd(il.append(new ALOAD(pathTemp.getIndex())));
// Initialize Dup Filter Iterator with iterator from the stack
il.append(new INVOKESPECIAL(initDFI));
}
else {
final int git = cpg.addInterfaceMethodref(DOM_INTF,
"getIterator",
"()"+NODE_ITERATOR_SIG);
il.append(methodGen.loadDOM());
il.append(new INVOKEINTERFACE(git, 1));
}
}
Example 19
| Source File: XslElement.java From openjdk-jdk8u with GNU General Public License v2.0 | 4 votes |
|
/**
* At runtime the compilation of xsl:element results in code that: (i)
* evaluates the avt for the name, (ii) checks for a prefix in the name
* (iii) generates a new prefix and create a new qname when necessary
* (iv) calls startElement() on the handler (v) looks up a uri in the XML
* when the prefix is not known at compile time (vi) calls namespace()
* on the handler (vii) evaluates the contents (viii) calls endElement().
*/
public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
// Optimize translation if element name is a literal
if (_isLiteralName) {
translateLiteral(classGen, methodGen);
return;
}
if (!_ignore) {
// if the qname is an AVT, then the qname has to be checked at runtime if it is a valid qname
LocalVariableGen nameValue =
methodGen.addLocalVariable2("nameValue",
Util.getJCRefType(STRING_SIG),
null);
// store the name into a variable first so _name.translate only needs to be called once
_name.translate(classGen, methodGen);
nameValue.setStart(il.append(new ASTORE(nameValue.getIndex())));
il.append(new ALOAD(nameValue.getIndex()));
// call checkQName if the name is an AVT
final int check = cpg.addMethodref(BASIS_LIBRARY_CLASS, "checkQName",
"("
+STRING_SIG
+")V");
il.append(new INVOKESTATIC(check));
// Push handler for call to endElement()
il.append(methodGen.loadHandler());
// load name value again
nameValue.setEnd(il.append(new ALOAD(nameValue.getIndex())));
if (_namespace != null) {
_namespace.translate(classGen, methodGen);
}
else {
il.append(ACONST_NULL);
}
// Push additional arguments
il.append(methodGen.loadHandler());
il.append(methodGen.loadDOM());
il.append(methodGen.loadCurrentNode());
// Invoke BasisLibrary.startXslElemCheckQName()
il.append(new INVOKESTATIC(
cpg.addMethodref(BASIS_LIBRARY_CLASS, "startXslElement",
"(" + STRING_SIG
+ STRING_SIG
+ TRANSLET_OUTPUT_SIG
+ DOM_INTF_SIG + "I)" + STRING_SIG)));
}
translateContents(classGen, methodGen);
if (!_ignore) {
il.append(methodGen.endElement());
}
}
Example 20
| Source File: AbsolutePathPattern.java From jdk1.8-source-analysis with Apache License 2.0 | 4 votes |
|
public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
if (_left != null) {
if (_left instanceof StepPattern) {
final LocalVariableGen local =
// absolute path pattern temporary
methodGen.addLocalVariable2("apptmp",
Util.getJCRefType(NODE_SIG),
null);
il.append(DUP);
local.setStart(il.append(new ISTORE(local.getIndex())));
_left.translate(classGen, methodGen);
il.append(methodGen.loadDOM());
local.setEnd(il.append(new ILOAD(local.getIndex())));
methodGen.removeLocalVariable(local);
}
else {
_left.translate(classGen, methodGen);
}
}
final int getParent = cpg.addInterfaceMethodref(DOM_INTF,
GET_PARENT,
GET_PARENT_SIG);
final int getType = cpg.addInterfaceMethodref(DOM_INTF,
"getExpandedTypeID",
"(I)I");
InstructionHandle begin = il.append(methodGen.loadDOM());
il.append(SWAP);
il.append(new INVOKEINTERFACE(getParent, 2));
if (_left instanceof AncestorPattern) {
il.append(methodGen.loadDOM());
il.append(SWAP);
}
il.append(new INVOKEINTERFACE(getType, 2));
il.append(new PUSH(cpg, DTM.DOCUMENT_NODE));
final BranchHandle skip = il.append(new IF_ICMPEQ(null));
_falseList.add(il.append(new GOTO_W(null)));
skip.setTarget(il.append(NOP));
if (_left != null) {
_left.backPatchTrueList(begin);
/*
* If _left is an ancestor pattern, backpatch this pattern's false
* list to the loop that searches for more ancestors.
*/
if (_left instanceof AncestorPattern) {
final AncestorPattern ancestor = (AncestorPattern) _left;
_falseList.backPatch(ancestor.getLoopHandle()); // clears list
}
_falseList.append(_left._falseList);
}
}
