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| Comment: | Factor the UMINUS and UPLUS tokens out of the parser so that the parser tables can go back to using 8-bit values instead of 16-bit values. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
3fc938c961fd7810594224b91a2d6e1a |
| User & Date: | drh 2009-09-22 20:08:35 |
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2009-09-23
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| 02:29 | Generalize the IS and IS NOT operators so that their right-hand side can be an arbitrary expression and not simple the constant NULL. They work like = and <> except that NULL values compare equal to one another an unequal to everything else. (check-in: 98853f61 user: drh tags: trunk) | |
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2009-09-22
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| 20:08 | Factor the UMINUS and UPLUS tokens out of the parser so that the parser tables can go back to using 8-bit values instead of 16-bit values. (check-in: 3fc938c9 user: drh tags: trunk) | |
| 19:53 | The NO ACTION action really should be no-action and not RESTRICT. (check-in: 55b263fa user: drh tags: trunk) | |
Changes to addopcodes.awk.
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printf "#define TK_%-29s %4d\n", "SPACE", ++max printf "#define TK_%-29s %4d\n", "UNCLOSED_STRING", ++max printf "#define TK_%-29s %4d\n", "FUNCTION", ++max printf "#define TK_%-29s %4d\n", "COLUMN", ++max printf "#define TK_%-29s %4d\n", "AGG_FUNCTION", ++max printf "#define TK_%-29s %4d\n", "AGG_COLUMN", ++max printf "#define TK_%-29s %4d\n", "CONST_FUNC", ++max } |
> > |
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printf "#define TK_%-29s %4d\n", "SPACE", ++max printf "#define TK_%-29s %4d\n", "UNCLOSED_STRING", ++max printf "#define TK_%-29s %4d\n", "FUNCTION", ++max printf "#define TK_%-29s %4d\n", "COLUMN", ++max printf "#define TK_%-29s %4d\n", "AGG_FUNCTION", ++max printf "#define TK_%-29s %4d\n", "AGG_COLUMN", ++max printf "#define TK_%-29s %4d\n", "CONST_FUNC", ++max printf "#define TK_%-29s %4d\n", "UMINUS", ++max printf "#define TK_%-29s %4d\n", "UPLUS", ++max } |
Changes to src/parse.y.
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%left GT LE LT GE. %right ESCAPE. %left BITAND BITOR LSHIFT RSHIFT. %left PLUS MINUS. %left STAR SLASH REM. %left CONCAT. %left COLLATE. %right UMINUS UPLUS BITNOT. // And "ids" is an identifer-or-string. // %type ids {Token} ids(A) ::= ID|STRING(X). {A = X;} // The name of a column or table can be any of the following: ................................................................................ } } expr(A) ::= NOT(B) expr(X). {spanUnaryPrefix(&A,pParse,@B,&X,&B);} expr(A) ::= BITNOT(B) expr(X). {spanUnaryPrefix(&A,pParse,@B,&X,&B);} expr(A) ::= MINUS(B) expr(X). [UMINUS] {spanUnaryPrefix(&A,pParse,TK_UMINUS,&X,&B);} expr(A) ::= PLUS(B) expr(X). [UPLUS] {spanUnaryPrefix(&A,pParse,TK_UPLUS,&X,&B);} %type between_op {int} between_op(A) ::= BETWEEN. {A = 0;} between_op(A) ::= NOT BETWEEN. {A = 1;} expr(A) ::= expr(W) between_op(N) expr(X) AND expr(Y). [BETWEEN] { ExprList *pList = sqlite3ExprListAppend(pParse,0, X.pExpr); |
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%left GT LE LT GE.
%right ESCAPE.
%left BITAND BITOR LSHIFT RSHIFT.
%left PLUS MINUS.
%left STAR SLASH REM.
%left CONCAT.
%left COLLATE.
%right BITNOT.
// And "ids" is an identifer-or-string.
//
%type ids {Token}
ids(A) ::= ID|STRING(X). {A = X;}
// The name of a column or table can be any of the following:
................................................................................
}
}
expr(A) ::= NOT(B) expr(X). {spanUnaryPrefix(&A,pParse,@B,&X,&B);}
expr(A) ::= BITNOT(B) expr(X). {spanUnaryPrefix(&A,pParse,@B,&X,&B);}
expr(A) ::= MINUS(B) expr(X). [BITNOT]
{spanUnaryPrefix(&A,pParse,TK_UMINUS,&X,&B);}
expr(A) ::= PLUS(B) expr(X). [BITNOT]
{spanUnaryPrefix(&A,pParse,TK_UPLUS,&X,&B);}
%type between_op {int}
between_op(A) ::= BETWEEN. {A = 0;}
between_op(A) ::= NOT BETWEEN. {A = 1;}
expr(A) ::= expr(W) between_op(N) expr(X) AND expr(Y). [BETWEEN] {
ExprList *pList = sqlite3ExprListAppend(pParse,0, X.pExpr);
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