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Fix bug #76927 forgot to save some context when evaluating binary

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* xpath.c: Fix bug #76927 forgot to save some context
  when evaluating binary expressions
Daniel
This commit is contained in:
Daniel Veillard
2002-03-29 17:28:10 +00:00
parent c332dab99b
commit 7089d6bfac
2 changed files with 37 additions and 1 deletions
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33
xpath.c
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@ -9529,6 +9529,8 @@ xmlXPathCompOpEval(xmlXPathParserContextPtr ctxt, xmlXPathStepOpPtr op)
int equal, ret;
xmlXPathCompExprPtr comp;
xmlXPathObjectPtr arg1, arg2;
xmlNodePtr bak;
xmlDocPtr bakd;
CHECK_ERROR0;
comp = ctxt->comp;
@ -9536,12 +9538,16 @@ xmlXPathCompOpEval(xmlXPathParserContextPtr ctxt, xmlXPathStepOpPtr op)
case XPATH_OP_END:
return (0);
case XPATH_OP_AND:
bakd = ctxt->context->doc;
bak = ctxt->context->node;
total += xmlXPathCompOpEval(ctxt, &comp->steps[op->ch1]);
CHECK_ERROR0;
xmlXPathBooleanFunction(ctxt, 1);
if ((ctxt->value == NULL) || (ctxt->value->boolval == 0))
return (total);
arg2 = valuePop(ctxt);
ctxt->context->doc = bakd;
ctxt->context->node = bak;
total += xmlXPathCompOpEval(ctxt, &comp->steps[op->ch2]);
if (ctxt->error) {
xmlXPathFreeObject(arg2);
@ -9554,12 +9560,16 @@ xmlXPathCompOpEval(xmlXPathParserContextPtr ctxt, xmlXPathStepOpPtr op)
xmlXPathFreeObject(arg2);
return (total);
case XPATH_OP_OR:
bakd = ctxt->context->doc;
bak = ctxt->context->node;
total += xmlXPathCompOpEval(ctxt, &comp->steps[op->ch1]);
CHECK_ERROR0;
xmlXPathBooleanFunction(ctxt, 1);
if ((ctxt->value == NULL) || (ctxt->value->boolval == 1))
return (total);
arg2 = valuePop(ctxt);
ctxt->context->doc = bakd;
ctxt->context->node = bak;
total += xmlXPathCompOpEval(ctxt, &comp->steps[op->ch2]);
if (ctxt->error) {
xmlXPathFreeObject(arg2);
@ -9572,8 +9582,12 @@ xmlXPathCompOpEval(xmlXPathParserContextPtr ctxt, xmlXPathStepOpPtr op)
xmlXPathFreeObject(arg2);
return (total);
case XPATH_OP_EQUAL:
bakd = ctxt->context->doc;
bak = ctxt->context->node;
total += xmlXPathCompOpEval(ctxt, &comp->steps[op->ch1]);
CHECK_ERROR0;
ctxt->context->doc = bakd;
ctxt->context->node = bak;
total += xmlXPathCompOpEval(ctxt, &comp->steps[op->ch2]);
CHECK_ERROR0;
equal = xmlXPathEqualValues(ctxt);
@ -9583,18 +9597,27 @@ xmlXPathCompOpEval(xmlXPathParserContextPtr ctxt, xmlXPathStepOpPtr op)
valuePush(ctxt, xmlXPathNewBoolean(!equal));
return (total);
case XPATH_OP_CMP:
bakd = ctxt->context->doc;
bak = ctxt->context->node;
total += xmlXPathCompOpEval(ctxt, &comp->steps[op->ch1]);
CHECK_ERROR0;
ctxt->context->doc = bakd;
ctxt->context->node = bak;
total += xmlXPathCompOpEval(ctxt, &comp->steps[op->ch2]);
CHECK_ERROR0;
ret = xmlXPathCompareValues(ctxt, op->value, op->value2);
valuePush(ctxt, xmlXPathNewBoolean(ret));
return (total);
case XPATH_OP_PLUS:
bakd = ctxt->context->doc;
bak = ctxt->context->node;
total += xmlXPathCompOpEval(ctxt, &comp->steps[op->ch1]);
CHECK_ERROR0;
if (op->ch2 != -1)
if (op->ch2 != -1) {
ctxt->context->doc = bakd;
ctxt->context->node = bak;
total += xmlXPathCompOpEval(ctxt, &comp->steps[op->ch2]);
}
CHECK_ERROR0;
if (op->value == 0)
xmlXPathSubValues(ctxt);
@ -9608,8 +9631,12 @@ xmlXPathCompOpEval(xmlXPathParserContextPtr ctxt, xmlXPathStepOpPtr op)
}
return (total);
case XPATH_OP_MULT:
bakd = ctxt->context->doc;
bak = ctxt->context->node;
total += xmlXPathCompOpEval(ctxt, &comp->steps[op->ch1]);
CHECK_ERROR0;
ctxt->context->doc = bakd;
ctxt->context->node = bak;
total += xmlXPathCompOpEval(ctxt, &comp->steps[op->ch2]);
CHECK_ERROR0;
if (op->value == 0)
@ -9620,8 +9647,12 @@ xmlXPathCompOpEval(xmlXPathParserContextPtr ctxt, xmlXPathStepOpPtr op)
xmlXPathModValues(ctxt);
return (total);
case XPATH_OP_UNION:
bakd = ctxt->context->doc;
bak = ctxt->context->node;
total += xmlXPathCompOpEval(ctxt, &comp->steps[op->ch1]);
CHECK_ERROR0;
ctxt->context->doc = bakd;
ctxt->context->node = bak;
total += xmlXPathCompOpEval(ctxt, &comp->steps[op->ch2]);
CHECK_ERROR0;
CHECK_TYPE0(XPATH_NODESET);