internal void Add(string expression, XmlNamespaceManager names, object item, bool forceExternal)
{
Fx.Assert(null != item, "");
// Compile the new filter
bool compiled = false;
OpcodeBlock codeBlock = new OpcodeBlock();
codeBlock.Append(new NoOpOpcode(OpcodeID.QueryTree));
if (!forceExternal)
{
try
{
ValueDataType returnType = ValueDataType.None;
// Try to compile and merge the compiled query into the query tree
codeBlock.Append(QueryMatcher.CompileForInternalEngine(expression, names, QueryCompilerFlags.InverseQuery, out returnType));
MultipleResultOpcode opcode;
if (!this.match)
{
opcode = new QueryMultipleResultOpcode();
}
else
{
opcode = new MatchMultipleResultOpcode();
}
opcode.AddItem(item);
codeBlock.Append(opcode);
compiled = true;
// Perform SubExpression Elimination
codeBlock = new OpcodeBlock(this.elim.Add(item, codeBlock.First));
this.subExprVars = this.elim.VariableCount;
}
catch (QueryCompileException)
{
// If the filter couldn't be compiled, we drop down to the framework engine
}
}
if (!compiled)
{
codeBlock.Append(QueryMatcher.CompileForExternalEngine(expression, names, item, this.match));
}
// Merge the compiled query into the query tree
QueryTreeBuilder builder = new QueryTreeBuilder();
this.query = builder.Build(this.query, codeBlock);
// To de-merge this filter from the tree, we'll have to walk backwards up the tree... so we
// have to remember the last opcode that is executed on behalf of this filter
this.lastLookup[item] = builder.LastOpcode;
}
internal void Add(string expression, XmlNamespaceManager names, object item, bool forceExternal)
{
bool flag = false;
OpcodeBlock newBlock = new OpcodeBlock();
newBlock.Append(new NoOpOpcode(OpcodeID.QueryTree));
if (!forceExternal)
{
try
{
MultipleResultOpcode opcode;
ValueDataType none = ValueDataType.None;
newBlock.Append(QueryMatcher.CompileForInternalEngine(expression, names, QueryCompilerFlags.InverseQuery, out none));
if (!this.match)
{
opcode = new QueryMultipleResultOpcode();
}
else
{
opcode = new MatchMultipleResultOpcode();
}
opcode.AddItem(item);
newBlock.Append(opcode);
flag = true;
newBlock = new OpcodeBlock(this.elim.Add(item, newBlock.First));
base.subExprVars = this.elim.VariableCount;
}
catch (QueryCompileException)
{
}
}
if (!flag)
{
newBlock.Append(QueryMatcher.CompileForExternalEngine(expression, names, item, this.match));
}
QueryTreeBuilder builder = new QueryTreeBuilder();
base.query = builder.Build(base.query, newBlock);
this.lastLookup[item] = builder.LastOpcode;
}
internal void Add(string expression, XmlNamespaceManager names, object item, bool forceExternal)
{
bool flag = false;
OpcodeBlock newBlock = new OpcodeBlock();
newBlock.Append(new NoOpOpcode(OpcodeID.QueryTree));
if (!forceExternal)
{
try
{
MultipleResultOpcode opcode;
ValueDataType none = ValueDataType.None;
newBlock.Append(QueryMatcher.CompileForInternalEngine(expression, names, QueryCompilerFlags.InverseQuery, out none));
if (!this.match)
{
opcode = new QueryMultipleResultOpcode();
}
else
{
opcode = new MatchMultipleResultOpcode();
}
opcode.AddItem(item);
newBlock.Append(opcode);
flag = true;
newBlock = new OpcodeBlock(this.elim.Add(item, newBlock.First));
base.subExprVars = this.elim.VariableCount;
}
catch (QueryCompileException)
{
}
}
if (!flag)
{
newBlock.Append(QueryMatcher.CompileForExternalEngine(expression, names, item, this.match));
}
QueryTreeBuilder builder = new QueryTreeBuilder();
base.query = builder.Build(base.query, newBlock);
this.lastLookup[item] = builder.LastOpcode;
}
