/** Create a new auxillary class extending NodeSortRecord. */
private static String compileSortRecord(
Vector sortObjects, ClassGenerator classGen, MethodGenerator methodGen) {
final XSLTC xsltc = ((Sort) sortObjects.firstElement()).getXSLTC();
final String className = xsltc.getHelperClassName();
// This generates a new class for handling this specific sort
final NodeSortRecordGenerator sortRecord =
new NodeSortRecordGenerator(
className,
NODE_SORT_RECORD,
"sort$0.java",
ACC_PUBLIC | ACC_SUPER | ACC_FINAL,
new String[] {},
classGen.getStylesheet());
final ConstantPoolGen cpg = sortRecord.getConstantPool();
// Add a new instance variable for each var in closure
final int nsorts = sortObjects.size();
final ArrayList dups = new ArrayList();
for (int j = 0; j < nsorts; j++) {
final Sort sort = (Sort) sortObjects.get(j);
// Set the name of the inner class in this sort object
sort.setInnerClassName(className);
final int length = (sort._closureVars == null) ? 0 : sort._closureVars.size();
for (int i = 0; i < length; i++) {
final VariableRefBase varRef = (VariableRefBase) sort._closureVars.get(i);
// Discard duplicate variable references
if (dups.contains(varRef)) continue;
final VariableBase var = varRef.getVariable();
sortRecord.addField(
new Field(
ACC_PUBLIC,
cpg.addUtf8(var.getEscapedName()),
cpg.addUtf8(var.getType().toSignature()),
null,
cpg.getConstantPool()));
dups.add(varRef);
}
}
MethodGenerator init = compileInit(sortObjects, sortRecord, cpg, className);
MethodGenerator extract = compileExtract(sortObjects, sortRecord, cpg, className);
sortRecord.addMethod(init);
sortRecord.addMethod(extract);
xsltc.dumpClass(sortRecord.getJavaClass());
return className;
}
public static String compileSortRecordFactory(
Vector sortObjects,
ClassGenerator classGen,
MethodGenerator methodGen,
String sortRecordClass) {
final XSLTC xsltc = ((Sort) sortObjects.firstElement()).getXSLTC();
final String className = xsltc.getHelperClassName();
final NodeSortRecordFactGenerator sortRecordFactory =
new NodeSortRecordFactGenerator(
className,
NODE_SORT_FACTORY,
className + ".java",
ACC_PUBLIC | ACC_SUPER | ACC_FINAL,
new String[] {},
classGen.getStylesheet());
ConstantPoolGen cpg = sortRecordFactory.getConstantPool();
// Add a new instance variable for each var in closure
final int nsorts = sortObjects.size();
final ArrayList dups = new ArrayList();
for (int j = 0; j < nsorts; j++) {
final Sort sort = (Sort) sortObjects.get(j);
final int length = (sort._closureVars == null) ? 0 : sort._closureVars.size();
for (int i = 0; i < length; i++) {
final VariableRefBase varRef = (VariableRefBase) sort._closureVars.get(i);
// Discard duplicate variable references
if (dups.contains(varRef)) continue;
final VariableBase var = varRef.getVariable();
sortRecordFactory.addField(
new Field(
ACC_PUBLIC,
cpg.addUtf8(var.getEscapedName()),
cpg.addUtf8(var.getType().toSignature()),
null,
cpg.getConstantPool()));
dups.add(varRef);
}
}
// Define a constructor for this class
final org.apache.bcel.generic.Type[] argTypes = new org.apache.bcel.generic.Type[7];
argTypes[0] = Util.getJCRefType(DOM_INTF_SIG);
argTypes[1] = Util.getJCRefType(STRING_SIG);
argTypes[2] = Util.getJCRefType(TRANSLET_INTF_SIG);
argTypes[3] = Util.getJCRefType("[" + STRING_SIG);
argTypes[4] = Util.getJCRefType("[" + STRING_SIG);
argTypes[5] = Util.getJCRefType("[" + STRING_SIG);
argTypes[6] = Util.getJCRefType("[" + STRING_SIG);
final String[] argNames = new String[7];
argNames[0] = DOCUMENT_PNAME;
argNames[1] = "className";
argNames[2] = TRANSLET_PNAME;
argNames[3] = "order";
argNames[4] = "type";
argNames[5] = "lang";
argNames[6] = "case_order";
InstructionList il = new InstructionList();
final MethodGenerator constructor =
new MethodGenerator(
ACC_PUBLIC,
org.apache.bcel.generic.Type.VOID,
argTypes,
argNames,
"<init>",
className,
il,
cpg);
// Push all parameters onto the stack and called super.<init>()
il.append(ALOAD_0);
il.append(ALOAD_1);
il.append(ALOAD_2);
il.append(new ALOAD(3));
il.append(new ALOAD(4));
il.append(new ALOAD(5));
il.append(new ALOAD(6));
il.append(new ALOAD(7));
il.append(
new INVOKESPECIAL(
cpg.addMethodref(
NODE_SORT_FACTORY,
"<init>",
"("
+ DOM_INTF_SIG
+ STRING_SIG
+ TRANSLET_INTF_SIG
+ "["
+ STRING_SIG
+ "["
+ STRING_SIG
+ "["
+ STRING_SIG
+ "["
+ STRING_SIG
+ ")V")));
il.append(RETURN);
// Override the definition of makeNodeSortRecord()
il = new InstructionList();
final MethodGenerator makeNodeSortRecord =
new MethodGenerator(
ACC_PUBLIC,
Util.getJCRefType(NODE_SORT_RECORD_SIG),
new org.apache.bcel.generic.Type[] {
org.apache.bcel.generic.Type.INT, org.apache.bcel.generic.Type.INT
},
new String[] {"node", "last"},
"makeNodeSortRecord",
className,
il,
cpg);
il.append(ALOAD_0);
il.append(ILOAD_1);
il.append(ILOAD_2);
il.append(
new INVOKESPECIAL(
cpg.addMethodref(
NODE_SORT_FACTORY, "makeNodeSortRecord", "(II)" + NODE_SORT_RECORD_SIG)));
il.append(DUP);
il.append(new CHECKCAST(cpg.addClass(sortRecordClass)));
// Initialize closure in record class
final int ndups = dups.size();
for (int i = 0; i < ndups; i++) {
final VariableRefBase varRef = (VariableRefBase) dups.get(i);
final VariableBase var = varRef.getVariable();
final Type varType = var.getType();
il.append(DUP);
// Get field from factory class
il.append(ALOAD_0);
il.append(
new GETFIELD(cpg.addFieldref(className, var.getEscapedName(), varType.toSignature())));
// Put field in record class
il.append(
new PUTFIELD(
cpg.addFieldref(sortRecordClass, var.getEscapedName(), varType.toSignature())));
}
il.append(POP);
il.append(ARETURN);
constructor.setMaxLocals();
constructor.setMaxStack();
sortRecordFactory.addMethod(constructor);
makeNodeSortRecord.setMaxLocals();
makeNodeSortRecord.setMaxStack();
sortRecordFactory.addMethod(makeNodeSortRecord);
xsltc.dumpClass(sortRecordFactory.getJavaClass());
return className;
}
/**
* Create a new "Filter" class implementing <code>CurrentNodeListFilter</code>. Allocate registers
* for local variables and local parameters passed in the closure to test(). Notice that local
* variables need to be "unboxed".
*/
private void compileFilter(ClassGenerator classGen, MethodGenerator methodGen) {
TestGenerator testGen;
LocalVariableGen local;
FilterGenerator filterGen;
_className = getXSLTC().getHelperClassName();
filterGen =
new FilterGenerator(
_className,
"java.lang.Object",
toString(),
ACC_PUBLIC | ACC_SUPER,
new String[] {CURRENT_NODE_LIST_FILTER},
classGen.getStylesheet());
final ConstantPoolGen cpg = filterGen.getConstantPool();
final int length = (_closureVars == null) ? 0 : _closureVars.size();
// Add a new instance variable for each var in closure
for (int i = 0; i < length; i++) {
VariableBase var = ((VariableRefBase) _closureVars.get(i)).getVariable();
filterGen.addField(
new Field(
ACC_PUBLIC,
cpg.addUtf8(var.getEscapedName()),
cpg.addUtf8(var.getType().toSignature()),
null,
cpg.getConstantPool()));
}
final InstructionList il = new InstructionList();
testGen =
new TestGenerator(
ACC_PUBLIC | ACC_FINAL,
org.apache.bcel.generic.Type.BOOLEAN,
new org.apache.bcel.generic.Type[] {
org.apache.bcel.generic.Type.INT,
org.apache.bcel.generic.Type.INT,
org.apache.bcel.generic.Type.INT,
org.apache.bcel.generic.Type.INT,
Util.getJCRefType(TRANSLET_SIG),
Util.getJCRefType(NODE_ITERATOR_SIG)
},
new String[] {"node", "position", "last", "current", "translet", "iterator"},
"test",
_className,
il,
cpg);
// Store the dom in a local variable
local = testGen.addLocalVariable("document", Util.getJCRefType(DOM_INTF_SIG), null, null);
final String className = classGen.getClassName();
il.append(filterGen.loadTranslet());
il.append(new CHECKCAST(cpg.addClass(className)));
il.append(new GETFIELD(cpg.addFieldref(className, DOM_FIELD, DOM_INTF_SIG)));
local.setStart(il.append(new ASTORE(local.getIndex())));
// Store the dom index in the test generator
testGen.setDomIndex(local.getIndex());
_exp.translate(filterGen, testGen);
il.append(IRETURN);
filterGen.addEmptyConstructor(ACC_PUBLIC);
filterGen.addMethod(testGen);
getXSLTC().dumpClass(filterGen.getJavaClass());
}