// Compiles top level expressions
internal virtual OpcodeBlock Compile(XPathExpr expr)
{
Fx.Assert(null != expr, "");
this.nestingLevel = 1;
this.pushInitialContext = false;
XPathExprCompiler exprCompiler = new XPathExprCompiler(this);
OpcodeBlock mainBlock = exprCompiler.Compile(expr);
if (this.pushInitialContext)
{
OpcodeBlock expandedBlock = new OpcodeBlock();
expandedBlock.Append(new PushContextNodeOpcode());
expandedBlock.Append(mainBlock);
expandedBlock.Append(new PopContextNodes());
return expandedBlock;
}
return mainBlock;
}
// Compiles top level expressions
internal virtual OpcodeBlock Compile(XPathExpr expr)
{
Fx.Assert(null != expr, "");
this.nestingLevel = 1;
this.pushInitialContext = false;
XPathExprCompiler exprCompiler = new XPathExprCompiler(this);
OpcodeBlock mainBlock = exprCompiler.Compile(expr);
if (this.pushInitialContext)
{
OpcodeBlock expandedBlock = new OpcodeBlock();
expandedBlock.Append(new PushContextNodeOpcode());
expandedBlock.Append(mainBlock);
expandedBlock.Append(new PopContextNodes());
return(expandedBlock);
}
return(mainBlock);
}
OpcodeBlock CompileBlock(XPathExpr expr)
{
XPathExprCompiler compiler = new XPathExprCompiler(this);
return compiler.Compile(expr);
}
OpcodeBlock CompileBlock(XPathExpr expr)
{
XPathExprCompiler compiler = new XPathExprCompiler(this);
return(compiler.Compile(expr));
}