private static void parseBalanced(ASTNode node, SubNodeFactory snf, int lToken, int rToken)
{
if (node is ASTNodeAbstractExpr)
{
ASTNodeAbstractExpr absNode = (ASTNodeAbstractExpr)node;
int i = 0;
while (i < absNode.content.Count)
{
int type = absNode.getTokenType(i);
if (type == rToken)
{
throw new XPathSyntaxException("Unbalanced brackets or parentheses!"); //unbalanced
}
else if (type == lToken)
{
int j = absNode.indexOfBalanced(i, rToken, lToken, rToken);
if (j == -1)
{
throw new XPathSyntaxException("mismatched brackets or parentheses!"); //mismatched
}
absNode.condense(snf.newNode(absNode.extract(i + 1, j)), i, j + 1);
}
i++;
}
}
//UPGRADE_TODO: Method 'java.util.Enumeration.hasMoreElements' was converted to 'System.Collections.IEnumerator.MoveNext' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073_javautilEnumerationhasMoreElements'"
for (System.Collections.IEnumerator e = node.Children.GetEnumerator(); e.MoveNext();)
{
//UPGRADE_TODO: Method 'java.util.Enumeration.nextElement' was converted to 'System.Collections.IEnumerator.Current' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073_javautilEnumerationnextElement'"
parseBalanced((ASTNode)e.Current, snf, lToken, rToken);
}
}
//find and condense all function calls in the current level, then do the same in lower levels
private static void parseFuncCalls(ASTNode node)
{
if (node is ASTNodeAbstractExpr)
{
ASTNodeAbstractExpr absNode = (ASTNodeAbstractExpr)node;
int i = 0;
while (i < absNode.content.Count - 1)
{
if (absNode.getTokenType(i + 1) == Token.LPAREN && absNode.getTokenType(i) == Token.QNAME)
{
condenseFuncCall(absNode, i);
}
i++;
}
}
//UPGRADE_TODO: Method 'java.util.Enumeration.hasMoreElements' was converted to 'System.Collections.IEnumerator.MoveNext' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073_javautilEnumerationhasMoreElements'"
for (System.Collections.IEnumerator e = node.Children.GetEnumerator(); e.MoveNext();)
{
//UPGRADE_TODO: Method 'java.util.Enumeration.nextElement' was converted to 'System.Collections.IEnumerator.Current' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073_javautilEnumerationnextElement'"
parseFuncCalls((ASTNode)e.Current);
}
}
private static void parseUnaryOp(ASTNode node, int op)
{
if (node is ASTNodeAbstractExpr)
{
ASTNodeAbstractExpr absNode = (ASTNodeAbstractExpr)node;
if (absNode.content.Count > 0 && absNode.getTokenType(0) == op)
{
ASTNodeUnaryOp unOp = new ASTNodeUnaryOp();
unOp.op = op;
unOp.expr = (absNode.content.Count > 1?absNode.extract(1, absNode.content.Count):new ASTNodeAbstractExpr());
absNode.condense(unOp, 0, absNode.content.Count);
}
}
//UPGRADE_TODO: Method 'java.util.Enumeration.hasMoreElements' was converted to 'System.Collections.IEnumerator.MoveNext' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073_javautilEnumerationhasMoreElements'"
for (System.Collections.IEnumerator e = node.Children.GetEnumerator(); e.MoveNext();)
{
//UPGRADE_TODO: Method 'java.util.Enumeration.nextElement' was converted to 'System.Collections.IEnumerator.Current' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073_javautilEnumerationnextElement'"
parseUnaryOp((ASTNode)e.Current, op);
}
}
//true if 'node' is potentially a step, as opposed to a filter expr
private static bool isStep(ASTNodeAbstractExpr node)
{
if (node.content.Count > 0)
{
int type = node.getTokenType(0);
if (type == Token.QNAME || type == Token.WILDCARD || type == Token.NSWILDCARD || type == Token.AT || type == Token.DOT || type == Token.DBL_DOT)
{
return(true);
}
else if (node.content[0] is ASTNodeFunctionCall)
{
System.String name = ((ASTNodeFunctionCall)node.content[0]).name.ToString();
return(name.Equals("node") || name.Equals("text") || name.Equals("comment") || name.Equals("processing-instruction"));
}
else
{
return(false);
}
}
else
{
return(false);
}
}
//please kill me
private static ASTNodePathStep parseStep(ASTNodeAbstractExpr node)
{
ASTNodePathStep step = new ASTNodePathStep();
if (node.content.Count == 1 && node.getTokenType(0) == Token.DOT)
{
step.axisType = ASTNodePathStep.AXIS_TYPE_NULL;
step.nodeTestType = ASTNodePathStep.NODE_TEST_TYPE_ABBR_DOT;
}
else if (node.content.Count == 1 && node.getTokenType(0) == Token.DBL_DOT)
{
step.axisType = ASTNodePathStep.AXIS_TYPE_NULL;
step.nodeTestType = ASTNodePathStep.NODE_TEST_TYPE_ABBR_DBL_DOT;
}
else
{
int i = 0;
if (node.content.Count > 0 && node.getTokenType(0) == Token.AT)
{
step.axisType = ASTNodePathStep.AXIS_TYPE_ABBR;
i += 1;
}
else if (node.content.Count > 1 && node.getTokenType(0) == Token.QNAME && node.getTokenType(1) == Token.DBL_COLON)
{
int axisVal = ASTNodePathStep.validateAxisName(((XPathQName)node.getToken(0).val).ToString());
if (axisVal == -1)
{
throw new XPathSyntaxException("Invalid Axis: " + ((XPathQName)node.getToken(0).val).ToString());
}
step.axisType = ASTNodePathStep.AXIS_TYPE_EXPLICIT;
step.axisVal = axisVal;
i += 2;
}
else
{
step.axisType = ASTNodePathStep.AXIS_TYPE_NULL;
}
if (node.content.Count > i && node.getTokenType(i) == Token.WILDCARD)
{
step.nodeTestType = ASTNodePathStep.NODE_TEST_TYPE_WILDCARD;
}
else if (node.content.Count > i && node.getTokenType(i) == Token.NSWILDCARD)
{
step.nodeTestType = ASTNodePathStep.NODE_TEST_TYPE_NSWILDCARD;
step.nodeTestNamespace = ((System.String)node.getToken(i).val);
}
else if (node.content.Count > i && node.getTokenType(i) == Token.QNAME)
{
step.nodeTestType = ASTNodePathStep.NODE_TEST_TYPE_QNAME;
step.nodeTestQName = (XPathQName)node.getToken(i).val;
}
else if (node.content.Count > i && node.content[i] is ASTNodeFunctionCall)
{
if (!ASTNodePathStep.validateNodeTypeTest((ASTNodeFunctionCall)node.content[i]))
{
throw new XPathSyntaxException();
}
step.nodeTestType = ASTNodePathStep.NODE_TEST_TYPE_FUNC;
step.nodeTestFunc = (ASTNodeFunctionCall)node.content[i];
}
else
{
throw new XPathSyntaxException();
}
i += 1;
while (i < node.content.Count)
{
if (node.content[i] is ASTNodePredicate)
{
step.predicates.Add(node.content[i]);
}
else
{
throw new XPathSyntaxException();
}
i++;
}
}
return(step);
}
