Re: [sqlite] p in sclp in parse.y

[Uma Krishnan]

Hello Himanshu,

I'll look into it today, and get back.

Thanks

Uma

HG <[EMAIL PROTECTED]> wrote: Hello,

      Could you tell me what the 'p' in 'sclp' in 'parse.y' stands for? I am
trying to make a modification to the grammar file.

      Also the rule for sclp uses selcollist and the rule for selcollist
uses sclp in some kind of mutual recursion. Is this a lemon feature or
normal with LALR grammars.

Thank You,
HG
[snipped parse.y beginning]

%type sclp {ExprList*}
%destructor sclp {sqlite3ExprListDelete($$);}
sclp(A) ::= selcollist(X) COMMA.             {A = X;}
sclp(A) ::= .                                {A = 0;}
selcollist(A) ::= sclp(P) expr(X) as(Y).     {
   A = sqlite3ExprListAppend(pParse,P,X,Y.n?&Y:0);
}
selcollist(A) ::= sclp(P) STAR. {
  Expr *p = sqlite3PExpr(pParse, TK_ALL, 0, 0, 0);
  A = sqlite3ExprListAppend(pParse, P, p, 0);
}
selcollist(A) ::= sclp(P) nm(X) DOT STAR. {
  Expr *pRight = sqlite3PExpr(pParse, TK_ALL, 0, 0, 0);
  Expr *pLeft = sqlite3PExpr(pParse, TK_ID, 0, 0, &X);
  Expr *pDot = sqlite3PExpr(pParse, TK_DOT, pLeft, pRight, 0);
  A = sqlite3ExprListAppend(pParse,P, pDot, 0);
}
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