mirror of
https://github.com/mdbtools/mdbtools.git
synced 2026-03-10 00:20:54 +08:00
added like operator and handling of string sargs
Added index stuff to HACKING file Misc. mdb-sql updates
This commit is contained in:
brianb
482
src/sql/parser.c
Normal file
482
src/sql/parser.c
Normal file
@@ -0,0 +1,482 @@
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#ifndef lint
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static char yysccsid[] = "@(#)yaccpar 1.9 (Berkeley) 02/21/93";
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#endif
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#define YYBYACC 1
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#define YYMAJOR 1
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#define YYMINOR 9
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#define yyclearin (yychar=(-1))
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#define yyerrok (yyerrflag=0)
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#define YYRECOVERING (yyerrflag!=0)
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#define YYPREFIX "yy"
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#line 2 "parser.y"
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#include "mdbsql.h"
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MdbSQL *g_sql;
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#line 7 "parser.y"
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typedef union {
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char *name;
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double dval;
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int ival;
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} YYSTYPE;
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#line 22 "y.tab.c"
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#define NAME 257
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#define PATH 258
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#define NUMBER 259
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#define STRING 260
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#define SELECT 261
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#define FROM 262
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#define WHERE 263
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#define CONNECT 264
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#define DISCONNECT 265
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#define TO 266
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#define LIST 267
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#define TABLES 268
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#define AND 269
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#define DESCRIBE 270
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#define TABLE 271
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#define LTEQ 272
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#define GTEQ 273
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#define LIKE 274
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#define YYERRCODE 256
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short yylhs[] = { -1,
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0, 0, 0, 0, 0, 3, 3, 5, 5, 6,
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6, 7, 7, 7, 7, 7, 7, 8, 8, 4,
|
||||
4, 2, 1, 1, 1, 9,
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||||
};
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short yylen[] = { 2,
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||||
5, 3, 1, 3, 2, 0, 2, 1, 3, 3,
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||||
3, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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||||
1, 1, 1, 1, 3, 1,
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||||
};
|
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short yydefred[] = { 0,
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||||
0, 0, 3, 0, 0, 0, 26, 23, 0, 0,
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||||
0, 5, 0, 0, 0, 21, 20, 2, 22, 4,
|
||||
0, 25, 0, 1, 0, 18, 19, 7, 0, 0,
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||||
15, 16, 17, 12, 13, 14, 0, 0, 0, 10,
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9, 11,
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};
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short yydgoto[] = { 6,
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9, 20, 24, 18, 28, 29, 37, 30, 10,
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};
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short yysindex[] = { -254,
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||||
-42, -263, 0, -250, -252, 0, 0, 0, -242, -27,
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-256, 0, -236, -236, -42, 0, 0, 0, 0, 0,
|
||||
-241, 0, -245, 0, -56, 0, 0, 0, -246, -56,
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||||
0, 0, 0, 0, 0, 0, -251, -245, -233, 0,
|
||||
0, 0,
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||||
};
|
||||
short yyrindex[] = { 0,
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||||
0, 0, 0, 0, 0, 0, 0, 0, 0, -237,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
26, 0, 0, 0, 0, 0, 0, 0, 27, 0,
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||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
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0, 0,
|
||||
};
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short yygindex[] = { 0,
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13, 15, 0, 0, -8, 0, 1, -5, 0,
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};
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#define YYTABLESIZE 218
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short yytable[] = { 8,
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16, 17, 11, 36, 34, 35, 1, 26, 27, 2,
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3, 25, 4, 26, 27, 5, 15, 12, 13, 14,
|
||||
19, 23, 38, 42, 24, 6, 8, 22, 21, 41,
|
||||
39, 40, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 7, 31, 32, 33,
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||||
};
|
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short yycheck[] = { 42,
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257, 258, 266, 60, 61, 62, 261, 259, 260, 264,
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||||
265, 257, 267, 259, 260, 270, 44, 268, 271, 262,
|
||||
257, 263, 269, 257, 262, 0, 0, 15, 14, 38,
|
||||
30, 37, -1, -1, -1, -1, -1, -1, -1, -1,
|
||||
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
|
||||
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
|
||||
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
|
||||
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
|
||||
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
|
||||
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
|
||||
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
|
||||
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
|
||||
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
|
||||
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
|
||||
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
|
||||
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
|
||||
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
|
||||
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
|
||||
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
|
||||
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
|
||||
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, 257, 272, 273, 274,
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||||
};
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#define YYFINAL 6
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#ifndef YYDEBUG
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#define YYDEBUG 0
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#endif
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#define YYMAXTOKEN 274
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#if YYDEBUG
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char *yyname[] = {
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"end-of-file",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,"'*'",0,"','",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,"'<'","'='","'>'",0,
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||||
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
||||
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
||||
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
||||
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
||||
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,"NAME","PATH",
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"NUMBER","STRING","SELECT","FROM","WHERE","CONNECT","DISCONNECT","TO","LIST",
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"TABLES","AND","DESCRIBE","TABLE","LTEQ","GTEQ","LIKE",
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};
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char *yyrule[] = {
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"$accept : query",
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"query : SELECT column_list FROM table where_clause",
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"query : CONNECT TO database",
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"query : DISCONNECT",
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"query : DESCRIBE TABLE table",
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"query : LIST TABLES",
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"where_clause :",
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"where_clause : WHERE sarg_list",
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"sarg_list : sarg",
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"sarg_list : sarg AND sarg_list",
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"sarg : NAME operator constant",
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"sarg : constant operator NAME",
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"operator : '='",
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"operator : '>'",
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"operator : '<'",
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"operator : LTEQ",
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"operator : GTEQ",
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"operator : LIKE",
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"constant : NUMBER",
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"constant : STRING",
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"database : PATH",
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"database : NAME",
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"table : NAME",
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"column_list : '*'",
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"column_list : column",
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"column_list : column ',' column_list",
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"column : NAME",
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};
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#endif
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#ifdef YYSTACKSIZE
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#undef YYMAXDEPTH
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#define YYMAXDEPTH YYSTACKSIZE
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#else
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#ifdef YYMAXDEPTH
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#define YYSTACKSIZE YYMAXDEPTH
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#else
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#define YYSTACKSIZE 500
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#define YYMAXDEPTH 500
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#endif
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#endif
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int yydebug;
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int yynerrs;
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int yyerrflag;
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int yychar;
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short *yyssp;
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YYSTYPE *yyvsp;
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YYSTYPE yyval;
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YYSTYPE yylval;
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short yyss[YYSTACKSIZE];
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YYSTYPE yyvs[YYSTACKSIZE];
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#define yystacksize YYSTACKSIZE
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#define YYABORT goto yyabort
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#define YYREJECT goto yyabort
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#define YYACCEPT goto yyaccept
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#define YYERROR goto yyerrlab
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int
|
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yyparse()
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{
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register int yym, yyn, yystate;
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#if YYDEBUG
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register char *yys;
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extern char *getenv();
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|
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if (yys = getenv("YYDEBUG"))
|
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{
|
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yyn = *yys;
|
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if (yyn >= '0' && yyn <= '9')
|
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yydebug = yyn - '0';
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}
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#endif
|
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|
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yynerrs = 0;
|
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yyerrflag = 0;
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yychar = (-1);
|
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yyssp = yyss;
|
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yyvsp = yyvs;
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*yyssp = yystate = 0;
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yyloop:
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if (yyn = yydefred[yystate]) goto yyreduce;
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if (yychar < 0)
|
||||
{
|
||||
if ((yychar = yylex()) < 0) yychar = 0;
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#if YYDEBUG
|
||||
if (yydebug)
|
||||
{
|
||||
yys = 0;
|
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if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
|
||||
if (!yys) yys = "illegal-symbol";
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printf("%sdebug: state %d, reading %d (%s)\n",
|
||||
YYPREFIX, yystate, yychar, yys);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
if ((yyn = yysindex[yystate]) && (yyn += yychar) >= 0 &&
|
||||
yyn <= YYTABLESIZE && yycheck[yyn] == yychar)
|
||||
{
|
||||
#if YYDEBUG
|
||||
if (yydebug)
|
||||
printf("%sdebug: state %d, shifting to state %d\n",
|
||||
YYPREFIX, yystate, yytable[yyn]);
|
||||
#endif
|
||||
if (yyssp >= yyss + yystacksize - 1)
|
||||
{
|
||||
goto yyoverflow;
|
||||
}
|
||||
*++yyssp = yystate = yytable[yyn];
|
||||
*++yyvsp = yylval;
|
||||
yychar = (-1);
|
||||
if (yyerrflag > 0) --yyerrflag;
|
||||
goto yyloop;
|
||||
}
|
||||
if ((yyn = yyrindex[yystate]) && (yyn += yychar) >= 0 &&
|
||||
yyn <= YYTABLESIZE && yycheck[yyn] == yychar)
|
||||
{
|
||||
yyn = yytable[yyn];
|
||||
goto yyreduce;
|
||||
}
|
||||
if (yyerrflag) goto yyinrecovery;
|
||||
#ifdef lint
|
||||
goto yynewerror;
|
||||
#endif
|
||||
yynewerror:
|
||||
yyerror("syntax error");
|
||||
#ifdef lint
|
||||
goto yyerrlab;
|
||||
#endif
|
||||
yyerrlab:
|
||||
++yynerrs;
|
||||
yyinrecovery:
|
||||
if (yyerrflag < 3)
|
||||
{
|
||||
yyerrflag = 3;
|
||||
for (;;)
|
||||
{
|
||||
if ((yyn = yysindex[*yyssp]) && (yyn += YYERRCODE) >= 0 &&
|
||||
yyn <= YYTABLESIZE && yycheck[yyn] == YYERRCODE)
|
||||
{
|
||||
#if YYDEBUG
|
||||
if (yydebug)
|
||||
printf("%sdebug: state %d, error recovery shifting\
|
||||
to state %d\n", YYPREFIX, *yyssp, yytable[yyn]);
|
||||
#endif
|
||||
if (yyssp >= yyss + yystacksize - 1)
|
||||
{
|
||||
goto yyoverflow;
|
||||
}
|
||||
*++yyssp = yystate = yytable[yyn];
|
||||
*++yyvsp = yylval;
|
||||
goto yyloop;
|
||||
}
|
||||
else
|
||||
{
|
||||
#if YYDEBUG
|
||||
if (yydebug)
|
||||
printf("%sdebug: error recovery discarding state %d\n",
|
||||
YYPREFIX, *yyssp);
|
||||
#endif
|
||||
if (yyssp <= yyss) goto yyabort;
|
||||
--yyssp;
|
||||
--yyvsp;
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
if (yychar == 0) goto yyabort;
|
||||
#if YYDEBUG
|
||||
if (yydebug)
|
||||
{
|
||||
yys = 0;
|
||||
if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
|
||||
if (!yys) yys = "illegal-symbol";
|
||||
printf("%sdebug: state %d, error recovery discards token %d (%s)\n",
|
||||
YYPREFIX, yystate, yychar, yys);
|
||||
}
|
||||
#endif
|
||||
yychar = (-1);
|
||||
goto yyloop;
|
||||
}
|
||||
yyreduce:
|
||||
#if YYDEBUG
|
||||
if (yydebug)
|
||||
printf("%sdebug: state %d, reducing by rule %d (%s)\n",
|
||||
YYPREFIX, yystate, yyn, yyrule[yyn]);
|
||||
#endif
|
||||
yym = yylen[yyn];
|
||||
yyval = yyvsp[1-yym];
|
||||
switch (yyn)
|
||||
{
|
||||
case 1:
|
||||
#line 21 "parser.y"
|
||||
{
|
||||
mdb_sql_select(g_sql);
|
||||
}
|
||||
break;
|
||||
case 2:
|
||||
#line 24 "parser.y"
|
||||
{
|
||||
mdb_sql_open(g_sql, yyvsp[0].name); free(yyvsp[0].name);
|
||||
}
|
||||
break;
|
||||
case 3:
|
||||
#line 27 "parser.y"
|
||||
{
|
||||
mdb_sql_close(g_sql);
|
||||
}
|
||||
break;
|
||||
case 4:
|
||||
#line 30 "parser.y"
|
||||
{
|
||||
mdb_sql_describe_table(g_sql);
|
||||
}
|
||||
break;
|
||||
case 5:
|
||||
#line 33 "parser.y"
|
||||
{
|
||||
mdb_sql_listtables(g_sql);
|
||||
}
|
||||
break;
|
||||
case 10:
|
||||
#line 49 "parser.y"
|
||||
{
|
||||
mdb_sql_add_sarg(g_sql, yyvsp[-2].name, yyvsp[-1].ival, yyvsp[0].name);
|
||||
free(yyvsp[-2].name);
|
||||
free(yyvsp[0].name);
|
||||
}
|
||||
break;
|
||||
case 11:
|
||||
#line 54 "parser.y"
|
||||
{
|
||||
mdb_sql_add_sarg(g_sql, yyvsp[0].name, yyvsp[-1].ival, yyvsp[-2].name);
|
||||
free(yyvsp[-2].name);
|
||||
free(yyvsp[0].name);
|
||||
}
|
||||
break;
|
||||
case 12:
|
||||
#line 62 "parser.y"
|
||||
{ yyval.ival = MDB_EQUAL; }
|
||||
break;
|
||||
case 13:
|
||||
#line 63 "parser.y"
|
||||
{ yyval.ival = MDB_GT; }
|
||||
break;
|
||||
case 14:
|
||||
#line 64 "parser.y"
|
||||
{ yyval.ival = MDB_LT; }
|
||||
break;
|
||||
case 15:
|
||||
#line 65 "parser.y"
|
||||
{ yyval.ival = MDB_LTEQ; }
|
||||
break;
|
||||
case 16:
|
||||
#line 66 "parser.y"
|
||||
{ yyval.ival = MDB_GTEQ; }
|
||||
break;
|
||||
case 17:
|
||||
#line 67 "parser.y"
|
||||
{ yyval.ival = MDB_LIKE; }
|
||||
break;
|
||||
case 18:
|
||||
#line 70 "parser.y"
|
||||
{ yyval.name = yyvsp[0].name; }
|
||||
break;
|
||||
case 19:
|
||||
#line 71 "parser.y"
|
||||
{ yyval.name = yyvsp[0].name; }
|
||||
break;
|
||||
case 22:
|
||||
#line 79 "parser.y"
|
||||
{ mdb_sql_add_table(g_sql, yyvsp[0].name); free(yyvsp[0].name); }
|
||||
break;
|
||||
case 23:
|
||||
#line 83 "parser.y"
|
||||
{ mdb_sql_all_columns(g_sql); }
|
||||
break;
|
||||
case 26:
|
||||
#line 89 "parser.y"
|
||||
{ mdb_sql_add_column(g_sql, yyvsp[0].name); free(yyvsp[0].name); }
|
||||
break;
|
||||
#line 427 "y.tab.c"
|
||||
}
|
||||
yyssp -= yym;
|
||||
yystate = *yyssp;
|
||||
yyvsp -= yym;
|
||||
yym = yylhs[yyn];
|
||||
if (yystate == 0 && yym == 0)
|
||||
{
|
||||
#if YYDEBUG
|
||||
if (yydebug)
|
||||
printf("%sdebug: after reduction, shifting from state 0 to\
|
||||
state %d\n", YYPREFIX, YYFINAL);
|
||||
#endif
|
||||
yystate = YYFINAL;
|
||||
*++yyssp = YYFINAL;
|
||||
*++yyvsp = yyval;
|
||||
if (yychar < 0)
|
||||
{
|
||||
if ((yychar = yylex()) < 0) yychar = 0;
|
||||
#if YYDEBUG
|
||||
if (yydebug)
|
||||
{
|
||||
yys = 0;
|
||||
if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
|
||||
if (!yys) yys = "illegal-symbol";
|
||||
printf("%sdebug: state %d, reading %d (%s)\n",
|
||||
YYPREFIX, YYFINAL, yychar, yys);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
if (yychar == 0) goto yyaccept;
|
||||
goto yyloop;
|
||||
}
|
||||
if ((yyn = yygindex[yym]) && (yyn += yystate) >= 0 &&
|
||||
yyn <= YYTABLESIZE && yycheck[yyn] == yystate)
|
||||
yystate = yytable[yyn];
|
||||
else
|
||||
yystate = yydgoto[yym];
|
||||
#if YYDEBUG
|
||||
if (yydebug)
|
||||
printf("%sdebug: after reduction, shifting from state %d \
|
||||
to state %d\n", YYPREFIX, *yyssp, yystate);
|
||||
#endif
|
||||
if (yyssp >= yyss + yystacksize - 1)
|
||||
{
|
||||
goto yyoverflow;
|
||||
}
|
||||
*++yyssp = yystate;
|
||||
*++yyvsp = yyval;
|
||||
goto yyloop;
|
||||
yyoverflow:
|
||||
yyerror("yacc stack overflow");
|
||||
yyabort:
|
||||
return (1);
|
||||
yyaccept:
|
||||
return (0);
|
||||
}
|
||||
Reference in New Issue
Block a user