108    * @param opPos The current position in the xpath.m_opMap array.
114   public Expression compile(int opPos) throws TransformerException
117     int op = getOp(opPos);
124       expr = compile(opPos + 2); break;
126       expr = or(opPos); break;
128       expr = and(opPos); break;
130       expr = notequals(opPos); break;
132       expr = equals(opPos); break;
134       expr = lte(opPos); break;
136       expr = lt(opPos); break;
138       expr = gte(opPos); break;
140       expr = gt(opPos); break;
142       expr = plus(opPos); break;
144       expr = minus(opPos); break;
146       expr = mult(opPos); break;
148       expr = div(opPos); break;
150       expr = mod(opPos); break;
152 //      expr = quo(opPos); break;
154       expr = neg(opPos); break;
156       expr = string(opPos); break;
158       expr = bool(opPos); break;
160       expr = number(opPos); break;
162       expr = union(opPos); break;
164       expr = literal(opPos); break;
166       expr = variable(opPos); break;
168       expr = group(opPos); break;
170       expr = numberlit(opPos); break;
172       expr = arg(opPos); break;
174       expr = compileExtension(opPos); break;
176       expr = compileFunction(opPos); break;
178       expr = locationPath(opPos); break;
182       expr = matchPattern(opPos + 2); break;
184       expr = locationPathPattern(opPos); break;
187             new Object[]{ "quo" });  //"ERROR! Unknown op code: "+m_opMap[opPos]);
191             new Object[]{ Integer.toString(getOp(opPos)) });  //"ERROR! Unknown op code: "+m_opMap[opPos]);
203    * @param opPos The op map position of the parent operation.
209   private Expression compileOperation(Operation operation, int opPos)
213     int leftPos = getFirstChildPos(opPos);
225    * @param opPos The position in the op map of the parent operation.
231   private Expression compileUnary(UnaryOperation unary, int opPos)
235     int rightPos = getFirstChildPos(opPos);
245    * @param opPos The current position in the m_opMap array.
251   protected Expression or(int opPos) throws TransformerException
253     return compileOperation(new Or(), opPos);
259    * @param opPos The current position in the m_opMap array.
265   protected Expression and(int opPos) throws TransformerException
267     return compileOperation(new And(), opPos);
273    * @param opPos The current position in the m_opMap array.
279   protected Expression notequals(int opPos) throws TransformerException
281     return compileOperation(new NotEquals(), opPos);
287    * @param opPos The current position in the m_opMap array.
293   protected Expression equals(int opPos) throws TransformerException
295     return compileOperation(new Equals(), opPos);
301    * @param opPos The current position in the m_opMap array.
307   protected Expression lte(int opPos) throws TransformerException
309     return compileOperation(new Lte(), opPos);
315    * @param opPos The current position in the m_opMap array.
321   protected Expression lt(int opPos) throws TransformerException
323     return compileOperation(new Lt(), opPos);
329    * @param opPos The current position in the m_opMap array.
335   protected Expression gte(int opPos) throws TransformerException
337     return compileOperation(new Gte(), opPos);
343    * @param opPos The current position in the m_opMap array.
349   protected Expression gt(int opPos) throws TransformerException
351     return compileOperation(new Gt(), opPos);
357    * @param opPos The current position in the m_opMap array.
363   protected Expression plus(int opPos) throws TransformerException
365     return compileOperation(new Plus(), opPos);
371    * @param opPos The current position in the m_opMap array.
377   protected Expression minus(int opPos) throws TransformerException
379     return compileOperation(new Minus(), opPos);
385    * @param opPos The current position in the m_opMap array.
391   protected Expression mult(int opPos) throws TransformerException
393     return compileOperation(new Mult(), opPos);
399    * @param opPos The current position in the m_opMap array.
405   protected Expression div(int opPos) throws TransformerException
407     return compileOperation(new Div(), opPos);
413    * @param opPos The current position in the m_opMap array.
419   protected Expression mod(int opPos) throws TransformerException
421     return compileOperation(new Mod(), opPos);
427    * @param opPos The current position in the m_opMap array.
433 //  protected Expression quo(int opPos) throws TransformerException
435 //    return compileOperation(new Quo(), opPos);
441    * @param opPos The current position in the m_opMap array.
447   protected Expression neg(int opPos) throws TransformerException
449     return compileUnary(new Neg(), opPos);
455    * @param opPos The current position in the m_opMap array.
461   protected Expression string(int opPos) throws TransformerException
463     return compileUnary(new org.apache.xpath.operations.String(), opPos);
469    * @param opPos The current position in the m_opMap array.
475   protected Expression bool(int opPos) throws TransformerException
477     return compileUnary(new org.apache.xpath.operations.Bool(), opPos);
483    * @param opPos The current position in the m_opMap array.
489   protected Expression number(int opPos) throws TransformerException
491     return compileUnary(new org.apache.xpath.operations.Number(), opPos);
497    * @param opPos The current position in the m_opMap array.
503   protected Expression literal(int opPos)
506     opPos = getFirstChildPos(opPos);
508     return (XString) getTokenQueue().elementAt(getOp(opPos));
514    * @param opPos The current position in the m_opMap array.
520   protected Expression numberlit(int opPos)
523     opPos = getFirstChildPos(opPos);
525     return (XNumber) getTokenQueue().elementAt(getOp(opPos));
531    * @param opPos The current position in the m_opMap array.
537   protected Expression variable(int opPos) throws TransformerException
542     opPos = getFirstChildPos(opPos);
544     int nsPos = getOp(opPos);
549       = (java.lang.String) getTokenQueue().elementAt(getOp(opPos+1));
560    * @param opPos The current position in the m_opMap array.
566   protected Expression group(int opPos) throws TransformerException
570     return compile(opPos + 2);
576    * @param opPos The current position in the m_opMap array.
582   protected Expression arg(int opPos) throws TransformerException
586     return compile(opPos + 2);
593    * @param opPos The current position in the m_opMap array.
599   protected Expression union(int opPos) throws TransformerException
604       return UnionPathIterator.createUnionIterator(this, opPos);
635    * @param opPos The current position in the m_opMap array.
641   public Expression locationPath(int opPos) throws TransformerException
646       DTMIterator iter = WalkerFactory.newDTMIterator(this, opPos, (locPathDepth == 0));
658    * @param opPos The current position in the m_opMap array.
664   public Expression predicate(int opPos) throws TransformerException
666     return compile(opPos + 2);
672    * @param opPos The current position in the m_opMap array.
678   protected Expression matchPattern(int opPos) throws TransformerException
684       int nextOpPos = opPos;
693         return compile(opPos);
698       for (i = 0; getOp(opPos) == OpCodes.OP_LOCATIONPATHPATTERN; i++)
700         nextOpPos = getNextOpPos(opPos);
701         patterns[i] = (StepPattern) compile(opPos);
702         opPos = nextOpPos;
718    * @param opPos The current position in the m_opMap array.
724   public Expression locationPathPattern(int opPos)
728     opPos = getFirstChildPos(opPos);
730     return stepPattern(opPos, 0, null);
737    * @param opPos the op map position for the location step.
742   public int getWhatToShow(int opPos)
745     int axesType = getOp(opPos);
746     int testType = getOp(opPos + 3);
813    * @param opPos The current position in the m_opMap array.
822           int opPos, int stepCount, StepPattern ancestorPattern)
826     int startOpPos = opPos;
827     int stepType = getOp(opPos);
836     int endStep = getNextOpPos(opPos);
850       argLen = getOp(opPos + OpMap.MAPINDEX_LENGTH);
851       pattern = new FunctionPattern(compileFunction(opPos), Axis.PARENT, Axis.CHILD);
857       argLen = getArgLengthOfStep(opPos);
858       opPos = getFirstChildPosOfStep(opPos);
866       argLen = getArgLengthOfStep(opPos);
867       opPos = getFirstChildPosOfStep(opPos);
876       argLen = getArgLengthOfStep(opPos);
877       opPos = getFirstChildPosOfStep(opPos);
890       argLen = getArgLengthOfStep(opPos);
891       opPos = getFirstChildPosOfStep(opPos);
903     pattern.setPredicates(getCompiledPredicates(opPos + argLen));
941    * @param opPos The position of the first predicate the m_opMap array.
947   public Expression[] getCompiledPredicates(int opPos)
951     int count = countPredicates(opPos);
957       compilePredicates(opPos, predicates);
968    * @param opPos The position of the first predicate the m_opMap array.
974   public int countPredicates(int opPos) throws TransformerException
979     while (OpCodes.OP_PREDICATE == getOp(opPos))
983       opPos = getNextOpPos(opPos);
992    * @param opPos The position of the first predicate the m_opMap array.
998   private void compilePredicates(int opPos, Expression[] predicates)
1002     for (int i = 0; OpCodes.OP_PREDICATE == getOp(opPos); i++)
1004       predicates[i] = predicate(opPos);
1005       opPos = getNextOpPos(opPos);
1012    * @param opPos The current position in the m_opMap array.
1018   Expression compileFunction(int opPos) throws TransformerException
1021     int endFunc = opPos + getOp(opPos + 1) - 1;
1023     opPos = getFirstChildPos(opPos);
1025     int funcID = getOp(opPos);
1027     opPos++;
1047         for (int p = opPos; p < endFunc; p = getNextOpPos(p), i++)
1094    * @param opPos The current position in the m_opMap array.
1100   private Expression compileExtension(int opPos)
1104     int endExtFunc = opPos + getOp(opPos + 1) - 1;
1106     opPos = getFirstChildPos(opPos);
1108     java.lang.String ns = (java.lang.String) getTokenQueue().elementAt(getOp(opPos));
1110     opPos++;
1113       (java.lang.String) getTokenQueue().elementAt(getOp(opPos));
1115     opPos++;
1127       while (opPos < endExtFunc)
1129         int nextOpPos = getNextOpPos(opPos);
1131         extension.setArg(this.compile(opPos), i);
1133         opPos = nextOpPos;

Indexes created Fri Nov 01 14:58:10 CET 2013