/** Translates an object of this type to its unboxed representation. */
public void translateUnBox(ClassGenerator classGen, MethodGenerator methodGen) {
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
il.append(new CHECKCAST(cpg.addClass(INTEGER_CLASS)));
final int index = cpg.addMethodref(INTEGER_CLASS, INT_VALUE, INT_VALUE_SIG);
il.append(new INVOKEVIRTUAL(index));
}
public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
_right.translate(classGen, methodGen);
il.append(new CHECKCAST(cpg.addClass(_className)));
}
public void translateDesynthesized(ClassGenerator classGen, MethodGenerator methodGen) {
final Type tleft = _left.getType();
final InstructionList il = methodGen.getInstructionList();
if (tleft instanceof BooleanType) {
_left.translate(classGen, methodGen);
_right.translate(classGen, methodGen);
_falseList.add(
il.append(
_op == Operators.EQ
? (BranchInstruction) new IF_ICMPNE(null)
: (BranchInstruction) new IF_ICMPEQ(null)));
} else if (tleft instanceof NumberType) {
_left.translate(classGen, methodGen);
_right.translate(classGen, methodGen);
if (tleft instanceof RealType) {
il.append(DCMPG);
_falseList.add(
il.append(
_op == Operators.EQ
? (BranchInstruction) new IFNE(null)
: (BranchInstruction) new IFEQ(null)));
} else {
_falseList.add(
il.append(
_op == Operators.EQ
? (BranchInstruction) new IF_ICMPNE(null)
: (BranchInstruction) new IF_ICMPEQ(null)));
}
} else {
translate(classGen, methodGen);
desynthesize(classGen, methodGen);
}
}
public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
// Get two copies of the argument on the stack
argument().translate(classGen, methodGen);
il.append(new INVOKESTATIC(cpg.addMethodref(BASIS_LIBRARY_CLASS, "roundF", "(D)D")));
}
/**
* Expects an integer on the stack and pushes a boxed integer. Boxed integers are represented by
* an instance of <code>java.lang.Integer</code>.
*
* @see com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type#translateTo
*/
public void translateTo(ClassGenerator classGen, MethodGenerator methodGen, ReferenceType type) {
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
il.append(new NEW(cpg.addClass(INTEGER_CLASS)));
il.append(DUP_X1);
il.append(SWAP);
il.append(new INVOKESPECIAL(cpg.addMethodref(INTEGER_CLASS, "<init>", "(I)V")));
}
/**
* Translates an integer into the Java type denoted by <code>clazz</code>. Expects an integer on
* the stack and pushes a number of the appropriate type after coercion.
*/
public void translateTo(ClassGenerator classGen, MethodGenerator methodGen, Class clazz) {
final InstructionList il = methodGen.getInstructionList();
if (clazz == Character.TYPE) {
il.append(I2C);
} else if (clazz == Byte.TYPE) {
il.append(I2B);
} else if (clazz == Short.TYPE) {
il.append(I2S);
} else if (clazz == Integer.TYPE) {
il.append(NOP);
} else if (clazz == Long.TYPE) {
il.append(I2L);
} else if (clazz == Float.TYPE) {
il.append(I2F);
} else if (clazz == Double.TYPE) {
il.append(I2D);
}
// Is Double <: clazz? I.e. clazz in { Double, Number, Object }
else if (clazz.isAssignableFrom(java.lang.Double.class)) {
il.append(I2D);
Type.Real.translateTo(classGen, methodGen, Type.Reference);
} else {
ErrorMsg err = new ErrorMsg(ErrorMsg.DATA_CONVERSION_ERR, toString(), clazz.getName());
classGen.getParser().reportError(Constants.FATAL, err);
}
}
/** Peephole optimization: Remove sequences of [ALOAD, POP]. */
private void peepHoleOptimization(MethodGenerator methodGen) {
final String pattern = "`aload'`pop'`instruction'";
final InstructionList il = methodGen.getInstructionList();
final InstructionFinder find = new InstructionFinder(il);
for (Iterator iter = find.search(pattern); iter.hasNext(); ) {
InstructionHandle[] match = (InstructionHandle[]) iter.next();
try {
il.delete(match[0], match[1]);
} catch (TargetLostException e) {
// TODO: move target down into the list
}
}
}
/**
* Compile a buildKeys() method into the output class. Note that keys for the input document are
* created in topLevel(), not in this method. However, we still need this method to create keys
* for documents loaded via the XPath document() function.
*/
private String compileBuildKeys(ClassGenerator classGen) {
final ConstantPoolGen cpg = classGen.getConstantPool();
final com.sun.org.apache.bcel.internal.generic.Type[] argTypes = {
Util.getJCRefType(DOM_INTF_SIG),
Util.getJCRefType(NODE_ITERATOR_SIG),
Util.getJCRefType(TRANSLET_OUTPUT_SIG),
com.sun.org.apache.bcel.internal.generic.Type.INT
};
final String[] argNames = {DOCUMENT_PNAME, ITERATOR_PNAME, TRANSLET_OUTPUT_PNAME, "current"};
final InstructionList il = new InstructionList();
final MethodGenerator buildKeys =
new MethodGenerator(
ACC_PUBLIC,
com.sun.org.apache.bcel.internal.generic.Type.VOID,
argTypes,
argNames,
"buildKeys",
_className,
il,
classGen.getConstantPool());
buildKeys.addException("com.sun.org.apache.xalan.internal.xsltc.TransletException");
final Enumeration elements = elements();
while (elements.hasMoreElements()) {
// xsl:key
final Object element = elements.nextElement();
if (element instanceof Key) {
final Key key = (Key) element;
key.translate(classGen, buildKeys);
_keys.put(key.getName(), key);
}
}
il.append(RETURN);
// Compute max locals + stack and add method to class
buildKeys.stripAttributes(true);
buildKeys.setMaxLocals();
buildKeys.setMaxStack();
buildKeys.removeNOPs();
classGen.addMethod(buildKeys.getMethod());
return ("(" + DOM_INTF_SIG + NODE_ITERATOR_SIG + TRANSLET_OUTPUT_SIG + "I)V");
}
/* */ public void translate(ClassGenerator classGen, MethodGenerator methodGen) /* */ {
/* 88 */ ConstantPoolGen cpg = classGen.getConstantPool();
/* 89 */ InstructionList il = methodGen.getInstructionList();
/* 90 */ SymbolTable symbolTable = getParser().getSymbolTable();
/* */
/* 93 */ for (int i = 0; i < this._sets.size(); i++)
/* */ {
/* 95 */ QName name = (QName) this._sets.elementAt(i);
/* */
/* 97 */ AttributeSet attrs = symbolTable.lookupAttributeSet(name);
/* */
/* 99 */ if (attrs != null) {
/* 100 */ String methodName = attrs.getMethodName();
/* 101 */ il.append(classGen.loadTranslet());
/* 102 */ il.append(methodGen.loadDOM());
/* 103 */ il.append(methodGen.loadIterator());
/* 104 */ il.append(methodGen.loadHandler());
/* 105 */ il.append(methodGen.loadCurrentNode());
/* 106 */ int method =
cpg.addMethodref(
classGen.getClassName(),
methodName,
"(Lcom/sun/org/apache/xalan/internal/xsltc/DOM;Lcom/sun/org/apache/xml/internal/dtm/DTMAxisIterator;Lcom/sun/org/apache/xml/internal/serializer/SerializationHandler;I)V");
/* */
/* 108 */ il.append(new INVOKESPECIAL(method));
/* */ }
/* */ else
/* */ {
/* 112 */ Parser parser = getParser();
/* 113 */ String atrs = name.toString();
/* 114 */ reportError(this, parser, "ATTRIBSET_UNDEF_ERR", atrs);
/* */ }
/* */ }
/* */ }
public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
if (elementCount() == 1) {
final Expression exp = (Expression) elementAt(0);
exp.translate(classGen, methodGen);
} else {
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
final int initBuffer = cpg.addMethodref(STRING_BUFFER_CLASS, "<init>", "()V");
final Instruction append =
new INVOKEVIRTUAL(
cpg.addMethodref(
STRING_BUFFER_CLASS, "append", "(" + STRING_SIG + ")" + STRING_BUFFER_SIG));
final int toString = cpg.addMethodref(STRING_BUFFER_CLASS, "toString", "()" + STRING_SIG);
il.append(new NEW(cpg.addClass(STRING_BUFFER_CLASS)));
il.append(DUP);
il.append(new INVOKESPECIAL(initBuffer));
// StringBuffer is on the stack
final Iterator<SyntaxTreeNode> elements = elements();
while (elements.hasNext()) {
final Expression exp = (Expression) elements.next();
exp.translate(classGen, methodGen);
il.append(append);
}
il.append(new INVOKEVIRTUAL(toString));
}
}
/**
* Redirect the handles from oldList to newList. "This" flow list is assumed to be relative to
* oldList.
*/
public FlowList copyAndRedirect(InstructionList oldList, InstructionList newList) {
final FlowList result = new FlowList();
if (_elements == null) {
return result;
}
final int n = _elements.size();
final Iterator oldIter = oldList.iterator();
final Iterator newIter = newList.iterator();
while (oldIter.hasNext()) {
final InstructionHandle oldIh = (InstructionHandle) oldIter.next();
final InstructionHandle newIh = (InstructionHandle) newIter.next();
for (int i = 0; i < n; i++) {
if (_elements.elementAt(i) == oldIh) {
result.add(newIh);
}
}
}
return result;
}
/**
* Expects an integer on the stack and pushes a 0 if its value is 0 and a 1 otherwise.
*
* @see com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type#translateTo
*/
public void translateTo(ClassGenerator classGen, MethodGenerator methodGen, BooleanType type) {
final InstructionList il = methodGen.getInstructionList();
final BranchHandle falsec = il.append(new IFEQ(null));
il.append(ICONST_1);
final BranchHandle truec = il.append(new GOTO(null));
falsec.setTarget(il.append(ICONST_0));
truec.setTarget(il.append(NOP));
}
/**
* Compile transform() into the output class. This method is used to initialize global variables
* and global parameters. The current node is set to be the document's root node.
*/
private void compileTransform(ClassGenerator classGen) {
final ConstantPoolGen cpg = classGen.getConstantPool();
/*
* Define the the method transform with the following signature:
* void transform(DOM, NodeIterator, HandlerBase)
*/
final com.sun.org.apache.bcel.internal.generic.Type[] argTypes =
new com.sun.org.apache.bcel.internal.generic.Type[3];
argTypes[0] = Util.getJCRefType(DOM_INTF_SIG);
argTypes[1] = Util.getJCRefType(NODE_ITERATOR_SIG);
argTypes[2] = Util.getJCRefType(TRANSLET_OUTPUT_SIG);
final String[] argNames = new String[3];
argNames[0] = DOCUMENT_PNAME;
argNames[1] = ITERATOR_PNAME;
argNames[2] = TRANSLET_OUTPUT_PNAME;
final InstructionList il = new InstructionList();
final MethodGenerator transf =
new MethodGenerator(
ACC_PUBLIC,
com.sun.org.apache.bcel.internal.generic.Type.VOID,
argTypes,
argNames,
"transform",
_className,
il,
classGen.getConstantPool());
transf.addException("com.sun.org.apache.xalan.internal.xsltc.TransletException");
// Define and initialize current with the root node
final LocalVariableGen current =
transf.addLocalVariable(
"current", com.sun.org.apache.bcel.internal.generic.Type.INT, null, null);
final String applyTemplatesSig = classGen.getApplyTemplatesSig();
final int applyTemplates =
cpg.addMethodref(getClassName(), "applyTemplates", applyTemplatesSig);
final int domField = cpg.addFieldref(getClassName(), DOM_FIELD, DOM_INTF_SIG);
// push translet for PUTFIELD
il.append(classGen.loadTranslet());
// prepare appropriate DOM implementation
if (isMultiDocument()) {
il.append(new NEW(cpg.addClass(MULTI_DOM_CLASS)));
il.append(DUP);
}
il.append(classGen.loadTranslet());
il.append(transf.loadDOM());
il.append(
new INVOKEVIRTUAL(
cpg.addMethodref(
TRANSLET_CLASS, "makeDOMAdapter", "(" + DOM_INTF_SIG + ")" + DOM_ADAPTER_SIG)));
// DOMAdapter is on the stack
if (isMultiDocument()) {
final int init = cpg.addMethodref(MULTI_DOM_CLASS, "<init>", "(" + DOM_INTF_SIG + ")V");
il.append(new INVOKESPECIAL(init));
// MultiDOM is on the stack
}
// store to _dom variable
il.append(new PUTFIELD(domField));
// continue with globals initialization
final int gitr = cpg.addInterfaceMethodref(DOM_INTF, "getIterator", "()" + NODE_ITERATOR_SIG);
il.append(transf.loadDOM());
il.append(new INVOKEINTERFACE(gitr, 1));
il.append(transf.nextNode());
current.setStart(il.append(new ISTORE(current.getIndex())));
// Transfer the output settings to the output post-processor
il.append(classGen.loadTranslet());
il.append(transf.loadHandler());
final int index =
cpg.addMethodref(TRANSLET_CLASS, "transferOutputSettings", "(" + OUTPUT_HANDLER_SIG + ")V");
il.append(new INVOKEVIRTUAL(index));
/*
* Compile buildKeys() method. Note that this method is not
* invoked here as keys for the input document are now created
* in topLevel(). However, this method is still needed by the
* LoadDocument class.
*/
final String keySig = compileBuildKeys(classGen);
final int keyIdx = cpg.addMethodref(getClassName(), "buildKeys", keySig);
// Look for top-level elements that need handling
final Enumeration toplevel = elements();
if (_globals.size() > 0 || toplevel.hasMoreElements()) {
// Compile method for handling top-level elements
final String topLevelSig = compileTopLevel(classGen);
// Get a reference to that method
final int topLevelIdx = cpg.addMethodref(getClassName(), "topLevel", topLevelSig);
// Push all parameters on the stack and call topLevel()
il.append(classGen.loadTranslet()); // The 'this' pointer
il.append(classGen.loadTranslet());
il.append(new GETFIELD(domField)); // The DOM reference
il.append(transf.loadIterator());
il.append(transf.loadHandler()); // The output handler
il.append(new INVOKEVIRTUAL(topLevelIdx));
}
// start document
il.append(transf.loadHandler());
il.append(transf.startDocument());
// push first arg for applyTemplates
il.append(classGen.loadTranslet());
// push translet for GETFIELD to get DOM arg
il.append(classGen.loadTranslet());
il.append(new GETFIELD(domField));
// push remaining 2 args
il.append(transf.loadIterator());
il.append(transf.loadHandler());
il.append(new INVOKEVIRTUAL(applyTemplates));
// endDocument
il.append(transf.loadHandler());
il.append(transf.endDocument());
il.append(RETURN);
// Compute max locals + stack and add method to class
classGen.addMethod(transf);
}
/**
* This method is called when the constructor is compiled in Stylesheet.compileConstructor() and
* not as the syntax tree is traversed.
*/
public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
ConstantPoolGen cpg = classGen.getConstantPool();
InstructionList il = methodGen.getInstructionList();
// DecimalFormatSymbols.<init>(Locale);
// xsl:decimal-format - except for the NaN and infinity attributes.
final int init = cpg.addMethodref(DFS_CLASS, "<init>", "(" + LOCALE_SIG + ")V");
// Push the format name on the stack for call to addDecimalFormat()
il.append(classGen.loadTranslet());
il.append(new PUSH(cpg, _name.toString()));
// Manufacture a DecimalFormatSymbols on the stack
// for call to addDecimalFormat()
// Use the US Locale as the default, as most of its settings
// are equivalent to the default settings required of
il.append(new NEW(cpg.addClass(DFS_CLASS)));
il.append(DUP);
il.append(new GETSTATIC(cpg.addFieldref(LOCALE_CLASS, "US", LOCALE_SIG)));
il.append(new INVOKESPECIAL(init));
String tmp = getAttribute("NaN");
if ((tmp == null) || (tmp.equals(EMPTYSTRING))) {
int nan = cpg.addMethodref(DFS_CLASS, "setNaN", "(Ljava/lang/String;)V");
il.append(DUP);
il.append(new PUSH(cpg, "NaN"));
il.append(new INVOKEVIRTUAL(nan));
}
tmp = getAttribute("infinity");
if ((tmp == null) || (tmp.equals(EMPTYSTRING))) {
int inf = cpg.addMethodref(DFS_CLASS, "setInfinity", "(Ljava/lang/String;)V");
il.append(DUP);
il.append(new PUSH(cpg, "Infinity"));
il.append(new INVOKEVIRTUAL(inf));
}
final int nAttributes = _attributes.getLength();
for (int i = 0; i < nAttributes; i++) {
final String name = _attributes.getQName(i);
final String value = _attributes.getValue(i);
boolean valid = true;
int method = 0;
if (name.equals("decimal-separator")) {
// DecimalFormatSymbols.setDecimalSeparator();
method = cpg.addMethodref(DFS_CLASS, "setDecimalSeparator", "(C)V");
} else if (name.equals("grouping-separator")) {
method = cpg.addMethodref(DFS_CLASS, "setGroupingSeparator", "(C)V");
} else if (name.equals("minus-sign")) {
method = cpg.addMethodref(DFS_CLASS, "setMinusSign", "(C)V");
} else if (name.equals("percent")) {
method = cpg.addMethodref(DFS_CLASS, "setPercent", "(C)V");
} else if (name.equals("per-mille")) {
method = cpg.addMethodref(DFS_CLASS, "setPerMill", "(C)V");
} else if (name.equals("zero-digit")) {
method = cpg.addMethodref(DFS_CLASS, "setZeroDigit", "(C)V");
} else if (name.equals("digit")) {
method = cpg.addMethodref(DFS_CLASS, "setDigit", "(C)V");
} else if (name.equals("pattern-separator")) {
method = cpg.addMethodref(DFS_CLASS, "setPatternSeparator", "(C)V");
} else if (name.equals("NaN")) {
method = cpg.addMethodref(DFS_CLASS, "setNaN", "(Ljava/lang/String;)V");
il.append(DUP);
il.append(new PUSH(cpg, value));
il.append(new INVOKEVIRTUAL(method));
valid = false;
} else if (name.equals("infinity")) {
method = cpg.addMethodref(DFS_CLASS, "setInfinity", "(Ljava/lang/String;)V");
il.append(DUP);
il.append(new PUSH(cpg, value));
il.append(new INVOKEVIRTUAL(method));
valid = false;
} else {
valid = false;
}
if (valid) {
il.append(DUP);
il.append(new PUSH(cpg, value.charAt(0)));
il.append(new INVOKEVIRTUAL(method));
}
}
final int put =
cpg.addMethodref(TRANSLET_CLASS, "addDecimalFormat", "(" + STRING_SIG + DFS_SIG + ")V");
il.append(new INVOKEVIRTUAL(put));
}
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());
}
/**
* Expects an integer on the stack and pushes its string value by calling <code>
* Integer.toString(int i)</code>.
*
* @see com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type#translateTo
*/
public void translateTo(ClassGenerator classGen, MethodGenerator methodGen, StringType type) {
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
il.append(new INVOKESTATIC(cpg.addMethodref(INTEGER_CLASS, "toString", "(I)" + STRING_SIG)));
}
/** Compile the translet's constructor */
private void compileConstructor(ClassGenerator classGen, Output output) {
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = new InstructionList();
final MethodGenerator constructor =
new MethodGenerator(
ACC_PUBLIC,
com.sun.org.apache.bcel.internal.generic.Type.VOID,
null,
null,
"<init>",
_className,
il,
cpg);
// Call the constructor in the AbstractTranslet superclass
il.append(classGen.loadTranslet());
il.append(new INVOKESPECIAL(cpg.addMethodref(TRANSLET_CLASS, "<init>", "()V")));
constructor.markChunkStart();
il.append(classGen.loadTranslet());
il.append(
new GETSTATIC(cpg.addFieldref(_className, STATIC_NAMES_ARRAY_FIELD, NAMES_INDEX_SIG)));
il.append(new PUTFIELD(cpg.addFieldref(TRANSLET_CLASS, NAMES_INDEX, NAMES_INDEX_SIG)));
il.append(classGen.loadTranslet());
il.append(new GETSTATIC(cpg.addFieldref(_className, STATIC_URIS_ARRAY_FIELD, URIS_INDEX_SIG)));
il.append(new PUTFIELD(cpg.addFieldref(TRANSLET_CLASS, URIS_INDEX, URIS_INDEX_SIG)));
constructor.markChunkEnd();
constructor.markChunkStart();
il.append(classGen.loadTranslet());
il.append(
new GETSTATIC(cpg.addFieldref(_className, STATIC_TYPES_ARRAY_FIELD, TYPES_INDEX_SIG)));
il.append(new PUTFIELD(cpg.addFieldref(TRANSLET_CLASS, TYPES_INDEX, TYPES_INDEX_SIG)));
constructor.markChunkEnd();
constructor.markChunkStart();
il.append(classGen.loadTranslet());
il.append(
new GETSTATIC(
cpg.addFieldref(_className, STATIC_NAMESPACE_ARRAY_FIELD, NAMESPACE_INDEX_SIG)));
il.append(new PUTFIELD(cpg.addFieldref(TRANSLET_CLASS, NAMESPACE_INDEX, NAMESPACE_INDEX_SIG)));
constructor.markChunkEnd();
constructor.markChunkStart();
il.append(classGen.loadTranslet());
il.append(new PUSH(cpg, AbstractTranslet.CURRENT_TRANSLET_VERSION));
il.append(
new PUTFIELD(
cpg.addFieldref(TRANSLET_CLASS, TRANSLET_VERSION_INDEX, TRANSLET_VERSION_INDEX_SIG)));
constructor.markChunkEnd();
if (_hasIdCall) {
constructor.markChunkStart();
il.append(classGen.loadTranslet());
il.append(new PUSH(cpg, Boolean.TRUE));
il.append(
new PUTFIELD(cpg.addFieldref(TRANSLET_CLASS, HASIDCALL_INDEX, HASIDCALL_INDEX_SIG)));
constructor.markChunkEnd();
}
// Compile in code to set the output configuration from <xsl:output>
if (output != null) {
// Set all the output settings files in the translet
constructor.markChunkStart();
output.translate(classGen, constructor);
constructor.markChunkEnd();
}
// Compile default decimal formatting symbols.
// This is an implicit, nameless xsl:decimal-format top-level element.
if (_numberFormattingUsed) {
constructor.markChunkStart();
DecimalFormatting.translateDefaultDFS(classGen, constructor);
constructor.markChunkEnd();
}
il.append(RETURN);
classGen.addMethod(constructor);
}
/**
* Creates the default, nameless, DecimalFormat object in AbstractTranslet's format_symbols
* hashtable. This should be called for every stylesheet, and the entry may be overridden by later
* nameless xsl:decimal-format instructions.
*/
public static void translateDefaultDFS(ClassGenerator classGen, MethodGenerator methodGen) {
ConstantPoolGen cpg = classGen.getConstantPool();
InstructionList il = methodGen.getInstructionList();
final int init = cpg.addMethodref(DFS_CLASS, "<init>", "(" + LOCALE_SIG + ")V");
// Push the format name, which is empty, on the stack
// for call to addDecimalFormat()
il.append(classGen.loadTranslet());
il.append(new PUSH(cpg, EMPTYSTRING));
// Manufacture a DecimalFormatSymbols on the stack for
// call to addDecimalFormat(). Use the US Locale as the
// default, as most of its settings are equivalent to
// the default settings required of xsl:decimal-format -
// except for the NaN and infinity attributes.
il.append(new NEW(cpg.addClass(DFS_CLASS)));
il.append(DUP);
il.append(new GETSTATIC(cpg.addFieldref(LOCALE_CLASS, "US", LOCALE_SIG)));
il.append(new INVOKESPECIAL(init));
int nan = cpg.addMethodref(DFS_CLASS, "setNaN", "(Ljava/lang/String;)V");
il.append(DUP);
il.append(new PUSH(cpg, "NaN"));
il.append(new INVOKEVIRTUAL(nan));
int inf = cpg.addMethodref(DFS_CLASS, "setInfinity", "(Ljava/lang/String;)V");
il.append(DUP);
il.append(new PUSH(cpg, "Infinity"));
il.append(new INVOKEVIRTUAL(inf));
final int put =
cpg.addMethodref(TRANSLET_CLASS, "addDecimalFormat", "(" + STRING_SIG + DFS_SIG + ")V");
il.append(new INVOKEVIRTUAL(put));
}
/**
* Expects an integer on the stack and translates it to 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.
*
* @see com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type#translateToDesynthesized
*/
public FlowList translateToDesynthesized(
ClassGenerator classGen, MethodGenerator methodGen, BooleanType type) {
final InstructionList il = methodGen.getInstructionList();
return new FlowList(il.append(new IFEQ(null)));
}
/**
* Compile the namesArray, urisArray and typesArray into the static initializer. They are
* read-only from the translet. All translet instances can share a single copy of this informtion.
*/
private void compileStaticInitializer(ClassGenerator classGen) {
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = new InstructionList();
final MethodGenerator staticConst =
new MethodGenerator(
ACC_PUBLIC | ACC_STATIC,
com.sun.org.apache.bcel.internal.generic.Type.VOID,
null,
null,
"<clinit>",
_className,
il,
cpg);
addStaticField(classGen, "[" + STRING_SIG, STATIC_NAMES_ARRAY_FIELD);
addStaticField(classGen, "[" + STRING_SIG, STATIC_URIS_ARRAY_FIELD);
addStaticField(classGen, "[I", STATIC_TYPES_ARRAY_FIELD);
addStaticField(classGen, "[" + STRING_SIG, STATIC_NAMESPACE_ARRAY_FIELD);
// Create fields of type char[] that will contain literal text from
// the stylesheet.
final int charDataFieldCount = getXSLTC().getCharacterDataCount();
for (int i = 0; i < charDataFieldCount; i++) {
addStaticField(classGen, STATIC_CHAR_DATA_FIELD_SIG, STATIC_CHAR_DATA_FIELD + i);
}
// Put the names array into the translet - used for dom/translet mapping
final Vector namesIndex = getXSLTC().getNamesIndex();
int size = namesIndex.size();
String[] namesArray = new String[size];
String[] urisArray = new String[size];
int[] typesArray = new int[size];
int index;
for (int i = 0; i < size; i++) {
String encodedName = (String) namesIndex.elementAt(i);
if ((index = encodedName.lastIndexOf(':')) > -1) {
urisArray[i] = encodedName.substring(0, index);
}
index = index + 1;
if (encodedName.charAt(index) == '@') {
typesArray[i] = DTM.ATTRIBUTE_NODE;
index++;
} else if (encodedName.charAt(index) == '?') {
typesArray[i] = DTM.NAMESPACE_NODE;
index++;
} else {
typesArray[i] = DTM.ELEMENT_NODE;
}
if (index == 0) {
namesArray[i] = encodedName;
} else {
namesArray[i] = encodedName.substring(index);
}
}
staticConst.markChunkStart();
il.append(new PUSH(cpg, size));
il.append(new ANEWARRAY(cpg.addClass(STRING)));
int namesArrayRef = cpg.addFieldref(_className, STATIC_NAMES_ARRAY_FIELD, NAMES_INDEX_SIG);
il.append(new PUTSTATIC(namesArrayRef));
staticConst.markChunkEnd();
for (int i = 0; i < size; i++) {
final String name = namesArray[i];
staticConst.markChunkStart();
il.append(new GETSTATIC(namesArrayRef));
il.append(new PUSH(cpg, i));
il.append(new PUSH(cpg, name));
il.append(AASTORE);
staticConst.markChunkEnd();
}
staticConst.markChunkStart();
il.append(new PUSH(cpg, size));
il.append(new ANEWARRAY(cpg.addClass(STRING)));
int urisArrayRef = cpg.addFieldref(_className, STATIC_URIS_ARRAY_FIELD, URIS_INDEX_SIG);
il.append(new PUTSTATIC(urisArrayRef));
staticConst.markChunkEnd();
for (int i = 0; i < size; i++) {
final String uri = urisArray[i];
staticConst.markChunkStart();
il.append(new GETSTATIC(urisArrayRef));
il.append(new PUSH(cpg, i));
il.append(new PUSH(cpg, uri));
il.append(AASTORE);
staticConst.markChunkEnd();
}
staticConst.markChunkStart();
il.append(new PUSH(cpg, size));
il.append(new NEWARRAY(BasicType.INT));
int typesArrayRef = cpg.addFieldref(_className, STATIC_TYPES_ARRAY_FIELD, TYPES_INDEX_SIG);
il.append(new PUTSTATIC(typesArrayRef));
staticConst.markChunkEnd();
for (int i = 0; i < size; i++) {
final int nodeType = typesArray[i];
staticConst.markChunkStart();
il.append(new GETSTATIC(typesArrayRef));
il.append(new PUSH(cpg, i));
il.append(new PUSH(cpg, nodeType));
il.append(IASTORE);
}
// Put the namespace names array into the translet
final Vector namespaces = getXSLTC().getNamespaceIndex();
staticConst.markChunkStart();
il.append(new PUSH(cpg, namespaces.size()));
il.append(new ANEWARRAY(cpg.addClass(STRING)));
int namespaceArrayRef =
cpg.addFieldref(_className, STATIC_NAMESPACE_ARRAY_FIELD, NAMESPACE_INDEX_SIG);
il.append(new PUTSTATIC(namespaceArrayRef));
staticConst.markChunkEnd();
for (int i = 0; i < namespaces.size(); i++) {
final String ns = (String) namespaces.elementAt(i);
staticConst.markChunkStart();
il.append(new GETSTATIC(namespaceArrayRef));
il.append(new PUSH(cpg, i));
il.append(new PUSH(cpg, ns));
il.append(AASTORE);
staticConst.markChunkEnd();
}
// Grab all the literal text in the stylesheet and put it in a char[]
final int charDataCount = getXSLTC().getCharacterDataCount();
final int toCharArray = cpg.addMethodref(STRING, "toCharArray", "()[C");
for (int i = 0; i < charDataCount; i++) {
staticConst.markChunkStart();
il.append(new PUSH(cpg, getXSLTC().getCharacterData(i)));
il.append(new INVOKEVIRTUAL(toCharArray));
il.append(
new PUTSTATIC(
cpg.addFieldref(_className, STATIC_CHAR_DATA_FIELD + i, STATIC_CHAR_DATA_FIELD_SIG)));
staticConst.markChunkEnd();
}
il.append(RETURN);
classGen.addMethod(staticConst);
}
public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
final Type tleft = _left.getType();
Type tright = _right.getType();
if (tleft instanceof BooleanType || tleft instanceof NumberType) {
translateDesynthesized(classGen, methodGen);
synthesize(classGen, methodGen);
return;
}
if (tleft instanceof StringType) {
final int equals = cpg.addMethodref(STRING_CLASS, "equals", "(" + OBJECT_SIG + ")Z");
_left.translate(classGen, methodGen);
_right.translate(classGen, methodGen);
il.append(new INVOKEVIRTUAL(equals));
if (_op == Operators.NE) {
il.append(ICONST_1);
il.append(IXOR); // not x <-> x xor 1
}
return;
}
BranchHandle truec, falsec;
if (tleft instanceof ResultTreeType) {
if (tright instanceof BooleanType) {
_right.translate(classGen, methodGen);
if (_op == Operators.NE) {
il.append(ICONST_1);
il.append(IXOR); // not x <-> x xor 1
}
return;
}
if (tright instanceof RealType) {
_left.translate(classGen, methodGen);
tleft.translateTo(classGen, methodGen, Type.Real);
_right.translate(classGen, methodGen);
il.append(DCMPG);
falsec =
il.append(
_op == Operators.EQ
? (BranchInstruction) new IFNE(null)
: (BranchInstruction) new IFEQ(null));
il.append(ICONST_1);
truec = il.append(new GOTO(null));
falsec.setTarget(il.append(ICONST_0));
truec.setTarget(il.append(NOP));
return;
}
// Next, result-tree/string and result-tree/result-tree comparisons
_left.translate(classGen, methodGen);
tleft.translateTo(classGen, methodGen, Type.String);
_right.translate(classGen, methodGen);
if (tright instanceof ResultTreeType) {
tright.translateTo(classGen, methodGen, Type.String);
}
final int equals = cpg.addMethodref(STRING_CLASS, "equals", "(" + OBJECT_SIG + ")Z");
il.append(new INVOKEVIRTUAL(equals));
if (_op == Operators.NE) {
il.append(ICONST_1);
il.append(IXOR); // not x <-> x xor 1
}
return;
}
if (tleft instanceof NodeSetType && tright instanceof BooleanType) {
_left.translate(classGen, methodGen);
_left.startIterator(classGen, methodGen);
Type.NodeSet.translateTo(classGen, methodGen, Type.Boolean);
_right.translate(classGen, methodGen);
il.append(IXOR); // x != y <-> x xor y
if (_op == Operators.EQ) {
il.append(ICONST_1);
il.append(IXOR); // not x <-> x xor 1
}
return;
}
if (tleft instanceof NodeSetType && tright instanceof StringType) {
_left.translate(classGen, methodGen);
_left.startIterator(classGen, methodGen); // needed ?
_right.translate(classGen, methodGen);
il.append(new PUSH(cpg, _op));
il.append(methodGen.loadDOM());
final int cmp =
cpg.addMethodref(
BASIS_LIBRARY_CLASS,
"compare",
"(" + tleft.toSignature() + tright.toSignature() + "I" + DOM_INTF_SIG + ")Z");
il.append(new INVOKESTATIC(cmp));
return;
}
// Next, node-set/t for t in {real, string, node-set, result-tree}
_left.translate(classGen, methodGen);
_left.startIterator(classGen, methodGen);
_right.translate(classGen, methodGen);
_right.startIterator(classGen, methodGen);
// Cast a result tree to a string to use an existing compare
if (tright instanceof ResultTreeType) {
tright.translateTo(classGen, methodGen, Type.String);
tright = Type.String;
}
// Call the appropriate compare() from the BasisLibrary
il.append(new PUSH(cpg, _op));
il.append(methodGen.loadDOM());
final int compare =
cpg.addMethodref(
BASIS_LIBRARY_CLASS,
"compare",
"(" + tleft.toSignature() + tright.toSignature() + "I" + DOM_INTF_SIG + ")Z");
il.append(new INVOKESTATIC(compare));
}
/**
* Compile a topLevel() method into the output class. This method is called from transform() to
* handle all non-template top-level elements. Returns the signature of the topLevel() method.
*
* <p>Global variables/params and keys are first sorted to resolve dependencies between them. The
* XSLT 1.0 spec does not allow a key to depend on a variable. However, for compatibility with
* Xalan interpretive, that type of dependency is allowed. Note also that the buildKeys() method
* is still generated as it is used by the LoadDocument class, but it no longer called from
* transform().
*/
private String compileTopLevel(ClassGenerator classGen) {
final ConstantPoolGen cpg = classGen.getConstantPool();
final com.sun.org.apache.bcel.internal.generic.Type[] argTypes = {
Util.getJCRefType(DOM_INTF_SIG),
Util.getJCRefType(NODE_ITERATOR_SIG),
Util.getJCRefType(TRANSLET_OUTPUT_SIG)
};
final String[] argNames = {DOCUMENT_PNAME, ITERATOR_PNAME, TRANSLET_OUTPUT_PNAME};
final InstructionList il = new InstructionList();
final MethodGenerator toplevel =
new MethodGenerator(
ACC_PUBLIC,
com.sun.org.apache.bcel.internal.generic.Type.VOID,
argTypes,
argNames,
"topLevel",
_className,
il,
classGen.getConstantPool());
toplevel.addException("com.sun.org.apache.xalan.internal.xsltc.TransletException");
// Define and initialize 'current' variable with the root node
final LocalVariableGen current =
toplevel.addLocalVariable(
"current", com.sun.org.apache.bcel.internal.generic.Type.INT, null, null);
final int setFilter =
cpg.addInterfaceMethodref(
DOM_INTF, "setFilter", "(Lcom/sun/org/apache/xalan/internal/xsltc/StripFilter;)V");
final int gitr = cpg.addInterfaceMethodref(DOM_INTF, "getIterator", "()" + NODE_ITERATOR_SIG);
il.append(toplevel.loadDOM());
il.append(new INVOKEINTERFACE(gitr, 1));
il.append(toplevel.nextNode());
current.setStart(il.append(new ISTORE(current.getIndex())));
// Create a new list containing variables/params + keys
Vector varDepElements = new Vector(_globals);
Enumeration elements = elements();
while (elements.hasMoreElements()) {
final Object element = elements.nextElement();
if (element instanceof Key) {
varDepElements.add(element);
}
}
// Determine a partial order for the variables/params and keys
varDepElements = resolveDependencies(varDepElements);
// Translate vars/params and keys in the right order
final int count = varDepElements.size();
for (int i = 0; i < count; i++) {
final TopLevelElement tle = (TopLevelElement) varDepElements.elementAt(i);
tle.translate(classGen, toplevel);
if (tle instanceof Key) {
final Key key = (Key) tle;
_keys.put(key.getName(), key);
}
}
// Compile code for other top-level elements
Vector whitespaceRules = new Vector();
elements = elements();
while (elements.hasMoreElements()) {
final Object element = elements.nextElement();
// xsl:decimal-format
if (element instanceof DecimalFormatting) {
((DecimalFormatting) element).translate(classGen, toplevel);
}
// xsl:strip/preserve-space
else if (element instanceof Whitespace) {
whitespaceRules.addAll(((Whitespace) element).getRules());
}
}
// Translate all whitespace strip/preserve rules
if (whitespaceRules.size() > 0) {
Whitespace.translateRules(whitespaceRules, classGen);
}
if (classGen.containsMethod(STRIP_SPACE, STRIP_SPACE_PARAMS) != null) {
il.append(toplevel.loadDOM());
il.append(classGen.loadTranslet());
il.append(new INVOKEINTERFACE(setFilter, 2));
}
il.append(RETURN);
// Compute max locals + stack and add method to class
classGen.addMethod(toplevel);
return ("(" + DOM_INTF_SIG + NODE_ITERATOR_SIG + TRANSLET_OUTPUT_SIG + ")V");
}
public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
// Save current node and current iterator on the stack
il.append(methodGen.loadCurrentNode());
il.append(methodGen.loadIterator());
// Collect sort objects associated with this instruction
final Vector sortObjects = new Vector();
Enumeration children = elements();
while (children.hasMoreElements()) {
final Object child = children.nextElement();
if (child instanceof Sort) {
sortObjects.addElement(child);
}
}
if ((_type != null) && (_type instanceof ResultTreeType)) {
// Store existing DOM on stack - must be restored when loop is done
il.append(methodGen.loadDOM());
// <xsl:sort> cannot be applied to a result tree - issue warning
if (sortObjects.size() > 0) {
ErrorMsg msg = new ErrorMsg(ErrorMsg.RESULT_TREE_SORT_ERR, this);
getParser().reportError(WARNING, msg);
}
// Put the result tree on the stack (DOM)
_select.translate(classGen, methodGen);
// Get an iterator for the whole DOM - excluding the root node
_type.translateTo(classGen, methodGen, Type.NodeSet);
// Store the result tree as the default DOM
il.append(SWAP);
il.append(methodGen.storeDOM());
} else {
// Compile node iterator
if (sortObjects.size() > 0) {
Sort.translateSortIterator(classGen, methodGen, _select, sortObjects);
} else {
_select.translate(classGen, methodGen);
}
if (_type instanceof ReferenceType == false) {
il.append(methodGen.loadContextNode());
il.append(methodGen.setStartNode());
}
}
// Overwrite current iterator
il.append(methodGen.storeIterator());
// Give local variables (if any) default values before starting loop
initializeVariables(classGen, methodGen);
final BranchHandle nextNode = il.append(new GOTO(null));
final InstructionHandle loop = il.append(NOP);
translateContents(classGen, methodGen);
nextNode.setTarget(il.append(methodGen.loadIterator()));
il.append(methodGen.nextNode());
il.append(DUP);
il.append(methodGen.storeCurrentNode());
il.append(new IFGT(loop));
// Restore current DOM (if result tree was used instead for this loop)
if ((_type != null) && (_type instanceof ResultTreeType)) {
il.append(methodGen.storeDOM());
}
// Restore current node and current iterator from the stack
il.append(methodGen.storeIterator());
il.append(methodGen.storeCurrentNode());
}