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Postgres FD Implementation
Commit 361f9e7f authored by Thomas G. Lockhart's avatar Thomas G. Lockhart
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Add comments and move a few declaration blocks to help readability. 

 No functional changes this time!
parent b12ba5f6
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Showing with 247 additions and 221 deletions
src/backend/parser/scan.c
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/* A lexical scanner generated by flex */
/* Scanner skeleton version:
* $Header: /cvsroot/pgsql/src/backend/parser/Attic/scan.c,v 1.3 1997/11/26 01:11:38 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/Attic/scan.c,v 1.4 1997/11/30 23:05:39 thomas Exp $
*/
#define FLEX_SCANNER
......@@ -288,20 +288,20 @@ static void yy_fatal_error YY_PROTO(( yyconst char msg[] ));
#define YY_END_OF_BUFFER 41
static yyconst short int yy_acclist[163] =
{ 0,
10, 10, 6, 6, 24, 24, 9, 9, 18, 18,
25, 25, 41, 39, 40, 38, 39, 40, 38, 40,
10, 10, 6, 6, 24, 24, 9, 9, 25, 25,
18, 18, 41, 39, 40, 38, 39, 40, 38, 40,
31, 39, 40, 22, 39, 40, 29, 31, 39, 40,
15, 39, 40, 29, 39, 40, 29, 31, 39, 40,
29, 31, 39, 40, 29, 31, 39, 40, 35, 39,
40,16417, 29, 31, 39, 40, 37, 39, 40, 37,
39, 40, 37, 39, 40, 10, 40, 8, 40, 3,
6, 40, 3, 6, 40, 3, 40, 6, 40, 24,
40, 23, 40, 9, 40, 14, 40, 18, 40, 16,
40, 40, 40, 25, 40, 26, 40, 31, 31, 31,
40, 23, 40, 9, 40, 14, 40, 40, 25, 40,
26, 40, 18, 40, 16, 40, 40, 31, 31, 31,
32, 31, 31, 35,16417, 4, 31, 31, 27, 31,
37, 7, 13, 10, 6, 6, 5, 24, 9, 18,
17, 20, 19, 20, 25, 30, 28, 30, 28, 30,
37, 7, 13, 10, 6, 6, 5, 24, 9, 25,
18, 17, 20, 19, 20, 30, 28, 30, 28, 30,
32, 28, 1, 31, 31, 28, 30, 4, 31, 4,
31, 4, 31, 8225, 36,16418, 12, 5, 11, 21,
30, 2, 4, 31, 30, 2, 2, 2, 8226, 36,
......@@ -314,11 +314,11 @@ static yyconst short int yy_accept[125] =
9, 10, 11, 12, 13, 14, 16, 19, 21, 24,
27, 31, 34, 37, 41, 45, 49, 53, 57, 60,
63, 66, 68, 70, 73, 76, 78, 80, 82, 84,
86, 88, 90, 92, 93, 94, 96, 98, 99, 100,
86, 88, 89, 91, 93, 95, 97, 98, 99, 100,
101, 102, 102, 103, 104, 106, 108, 109, 109, 109,
109, 111, 112, 113, 114, 115, 115, 115, 116, 117,
117, 117, 118, 119, 120, 120, 120, 121, 121, 121,
122, 123, 125, 126, 127, 129, 132, 133, 133, 134,
117, 117, 118, 119, 120, 120, 120, 121, 122, 122,
122, 123, 124, 126, 127, 129, 132, 133, 133, 134,
135, 136, 138, 138, 140, 142, 144, 145, 147, 147,
147, 148, 149, 149, 149, 150, 150, 150, 151, 152,
......@@ -367,22 +367,22 @@ static yyconst int yy_meta[22] =
static yyconst short int yy_base[142] =
{ 0,
0, 0, 323, 311, 18, 31, 304, 303, 232, 224,
18, 29, 46, 49, 221, 401, 401, 401, 204, 401,
12, 401, 196, 189, 42, 50, 62, 43, 0, 186,
164, 0, 64, 0, 73, 59, 0, 0, 401, 0,
67, 0, 78, 154, 401, 88, 401, 144, 81, 18,
135, 31, 129, 95, 0, 113, 106, 128, 0, 120,
110, 0, 401, 401, 0, 130, 133, 0, 0, 62,
85, 135, 0, 0, 139, 143, 0, 145, 149, 401,
401, 401, 151, 401, 401, 73, 401, 153, 401, 166,
113, 0, 69, 179, 49, 146, 401, 194, 171, 184,
401, 196, 199, 207, 401, 209, 215, 401, 0, 171,
201, 46, 217, 0, 213, 223, 227, 231, 401, 24,
221, 235, 401, 240, 251, 262, 273, 284, 295, 304,
303, 313, 324, 333, 340, 351, 362, 372, 383, 388,
391
0, 0, 355, 344, 18, 31, 334, 328, 325, 318,
46, 48, 18, 31, 313, 396, 396, 396, 293, 396,
12, 396, 292, 203, 42, 49, 61, 21, 0, 199,
196, 0, 52, 0, 72, 52, 0, 0, 396, 0,
64, 396, 66, 396, 0, 77, 192, 181, 78, 31,
169, 79, 165, 93, 0, 111, 104, 126, 0, 156,
135, 0, 396, 396, 0, 68, 128, 0, 0, 110,
129, 130, 0, 0, 138, 140, 142, 0, 146, 148,
396, 396, 396, 396, 396, 111, 396, 152, 396, 165,
122, 0, 77, 178, 64, 140, 396, 193, 170, 183,
396, 157, 195, 198, 396, 206, 208, 396, 0, 144,
214, 65, 216, 0, 210, 220, 223, 228, 396, 16,
214, 232, 396, 235, 246, 257, 268, 279, 290, 299,
298, 308, 319, 328, 335, 346, 357, 367, 378, 383,
386
} ;
static yyconst short int yy_def[142] =
......@@ -391,10 +391,10 @@ static yyconst short int yy_def[142] =
128, 128, 129, 129, 123, 123, 123, 123, 130, 123,
130, 123, 123, 130, 130, 130, 123, 130, 131, 131,
131, 132, 123, 133, 133, 134, 35, 135, 123, 136,
123, 137, 123, 138, 123, 123, 123, 130, 130, 49,
123, 123, 123, 123, 137, 123, 138, 130, 130, 49,
123, 123, 50, 123, 27, 139, 54, 123, 140, 123,
130, 131, 123, 123, 132, 123, 123, 133, 35, 134,
134, 134, 135, 136, 123, 123, 137, 123, 123, 123,
134, 134, 135, 136, 123, 123, 123, 137, 123, 123,
123, 123, 123, 123, 123, 123, 123, 54, 123, 88,
90, 88, 139, 139, 94, 94, 123, 123, 123, 123,
......@@ -405,106 +405,104 @@ static yyconst short int yy_def[142] =
123
} ;
static yyconst short int yy_nxt[423] =
static yyconst short int yy_nxt[418] =
{ 0,
16, 17, 18, 19, 20, 21, 22, 23, 24, 24,
25, 23, 26, 27, 28, 24, 29, 30, 29, 31,
16, 35, 50, 35, 43, 51, 36, 35, 35, 85,
37, 86, 35, 35, 35, 43, 35, 121, 44, 36,
35, 35, 87, 37, 87, 35, 35, 46, 46, 44,
46, 46, 54, 53, 110, 55, 47, 61, 56, 47,
53, 111, 57, 58, 58, 66, 67, 70, 75, 76,
70, 72, 59, 60, 72, 55, 69, 110, 69, 78,
79, 70, 69, 69, 80, 69, 51, 69, 69, 83,
83, 49, 84, 70, 84, 88, 88, 89, 90, 88,
90, 88, 88, 90, 90, 91, 92, 90, 92, 90,
90, 88, 88, 88, 88, 88, 94, 88, 94, 88,
49, 95, 94, 96, 109, 94, 109, 94, 94, 58,
58, 66, 67, 98, 99, 100, 102, 102, 59, 101,
75, 76, 85, 70, 103, 104, 78, 79, 51, 105,
106, 107, 83, 83, 49, 108, 88, 112, 88, 112,
82, 88, 88, 88, 88, 88, 88, 88, 88, 90,
64, 90, 99, 100, 90, 90, 91, 101, 90, 110,
90, 90, 94, 116, 94, 99, 100, 95, 94, 96,
101, 94, 63, 94, 94, 113, 113, 102, 102, 53,
103, 104, 117, 118, 114, 105, 52, 98, 103, 104,
106, 107, 115, 105, 49, 108, 106, 107, 113, 113,
123, 108, 120, 120, 117, 118, 121, 114, 117, 118,
41, 110, 122, 118, 121, 110, 122, 118, 41, 123,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 34, 34, 34, 34, 34, 34, 34, 34, 34,
34, 34, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 40, 40, 40, 40, 40, 40, 40,
40, 40, 40, 40, 42, 42, 42, 42, 42, 42,
42, 42, 42, 42, 42, 45, 45, 45, 45, 45,
45, 45, 45, 45, 45, 45, 48, 39, 39, 48,
48, 62, 62, 65, 65, 65, 65, 33, 65, 65,
65, 65, 65, 65, 68, 68, 68, 68, 68, 33,
68, 68, 68, 68, 68, 71, 123, 123, 71, 71,
73, 73, 73, 123, 73, 73, 73, 73, 73, 73,
73, 74, 74, 74, 74, 123, 74, 74, 74, 74,
74, 74, 77, 77, 77, 77, 123, 77, 77, 77,
77, 77, 81, 81, 81, 81, 81, 81, 81, 81,
81, 81, 81, 93, 123, 93, 93, 93, 93, 93,
93, 93, 93, 93, 97, 97, 97, 119, 119, 119,
15, 123, 123, 123, 123, 123, 123, 123, 123, 123,
16, 35, 50, 35, 46, 51, 36, 35, 35, 121,
37, 53, 35, 35, 35, 61, 35, 46, 47, 36,
35, 35, 85, 37, 86, 35, 35, 43, 43, 43,
43, 47, 54, 66, 67, 55, 44, 56, 44, 53,
70, 57, 58, 58, 72, 75, 76, 77, 77, 66,
67, 59, 60, 110, 55, 69, 111, 69, 79, 80,
70, 69, 69, 81, 69, 110, 69, 69, 49, 84,
87, 84, 87, 88, 88, 89, 90, 88, 90, 88,
88, 90, 90, 91, 92, 90, 92, 90, 90, 88,
88, 88, 88, 88, 94, 88, 94, 88, 70, 95,
94, 96, 72, 94, 51, 94, 94, 58, 58, 99,
100, 102, 102, 109, 101, 109, 59, 70, 70, 75,
76, 103, 104, 77, 77, 49, 105, 79, 80, 106,
107, 112, 110, 112, 108, 88, 116, 88, 102, 102,
88, 88, 88, 88, 88, 88, 88, 88, 90, 98,
90, 99, 100, 90, 90, 91, 101, 90, 85, 90,
90, 94, 51, 94, 99, 100, 95, 94, 96, 101,
94, 49, 94, 94, 113, 113, 103, 104, 83, 103,
104, 105, 64, 114, 105, 63, 98, 106, 107, 106,
107, 115, 108, 53, 108, 117, 118, 113, 113, 120,
120, 117, 118, 121, 117, 118, 114, 121, 110, 122,
118, 110, 123, 122, 118, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 34, 34, 34, 34,
34, 34, 34, 34, 34, 34, 34, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 40, 40,
40, 40, 40, 40, 40, 40, 40, 40, 40, 42,
42, 42, 42, 42, 42, 42, 42, 42, 42, 42,
45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
45, 48, 52, 49, 48, 48, 62, 62, 65, 65,
65, 65, 123, 65, 65, 65, 65, 65, 65, 68,
68, 68, 68, 68, 41, 68, 68, 68, 68, 68,
71, 41, 39, 71, 71, 73, 73, 73, 39, 73,
73, 73, 73, 73, 73, 73, 74, 74, 74, 74,
33, 74, 74, 74, 74, 74, 74, 78, 78, 78,
78, 33, 78, 78, 78, 78, 78, 82, 82, 82,
82, 82, 82, 82, 82, 82, 82, 82, 93, 123,
93, 93, 93, 93, 93, 93, 93, 93, 93, 97,
97, 97, 119, 119, 119, 15, 123, 123, 123, 123,
123, 123, 123, 123, 123, 123, 123, 123, 123, 123,
123, 123
123, 123, 123, 123, 123, 123, 123
} ;
static yyconst short int yy_chk[423] =
static yyconst short int yy_chk[418] =
{ 0,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 5, 21, 5, 11, 21, 5, 5, 5, 50,
5, 50, 5, 5, 6, 12, 6, 120, 11, 6,
6, 6, 52, 6, 52, 6, 6, 13, 13, 12,
14, 14, 25, 28, 112, 25, 13, 28, 26, 14,
26, 95, 26, 27, 27, 33, 33, 36, 41, 41,
70, 36, 27, 27, 70, 27, 35, 93, 35, 43,
43, 35, 35, 35, 43, 35, 86, 35, 35, 46,
46, 49, 49, 71, 49, 54, 54, 54, 54, 54,
1, 5, 21, 5, 13, 21, 5, 5, 5, 120,
5, 28, 5, 5, 6, 28, 6, 14, 13, 6,
6, 6, 50, 6, 50, 6, 6, 11, 11, 12,
12, 14, 25, 33, 33, 25, 11, 26, 12, 26,
36, 26, 27, 27, 36, 41, 41, 43, 43, 66,
66, 27, 27, 112, 27, 35, 95, 35, 46, 46,
35, 35, 35, 46, 35, 93, 35, 35, 49, 49,
52, 49, 52, 54, 54, 54, 54, 54, 54, 54,
54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
54, 54, 54, 54, 54, 54, 56, 57, 56, 57,
61, 56, 56, 56, 91, 56, 91, 56, 56, 58,
58, 66, 66, 60, 67, 67, 72, 72, 58, 67,
75, 75, 53, 72, 76, 76, 78, 78, 51, 76,
79, 79, 83, 83, 48, 79, 88, 96, 88, 96,
44, 88, 88, 88, 88, 88, 88, 88, 88, 90,
31, 90, 99, 99, 90, 90, 90, 99, 90, 110,
90, 90, 94, 110, 94, 100, 100, 94, 94, 94,
100, 94, 30, 94, 94, 98, 98, 102, 102, 24,
103, 103, 111, 111, 98, 103, 23, 98, 104, 104,
106, 106, 98, 104, 19, 106, 107, 107, 113, 113,
15, 107, 115, 115, 116, 116, 115, 113, 117, 117,
10, 116, 118, 118, 121, 117, 122, 122, 9, 121,
124, 124, 124, 124, 124, 124, 124, 124, 124, 124,
124, 125, 125, 125, 125, 125, 125, 125, 125, 125,
125, 125, 126, 126, 126, 126, 126, 126, 126, 126,
126, 126, 126, 127, 127, 127, 127, 127, 127, 127,
127, 127, 127, 127, 128, 128, 128, 128, 128, 128,
128, 128, 128, 128, 128, 129, 129, 129, 129, 129,
129, 129, 129, 129, 129, 129, 130, 8, 7, 130,
130, 131, 131, 132, 132, 132, 132, 4, 132, 132,
132, 132, 132, 132, 133, 133, 133, 133, 133, 3,
133, 133, 133, 133, 133, 134, 0, 0, 134, 134,
135, 135, 135, 0, 135, 135, 135, 135, 135, 135,
135, 136, 136, 136, 136, 0, 136, 136, 136, 136,
136, 136, 137, 137, 137, 137, 0, 137, 137, 137,
137, 137, 138, 138, 138, 138, 138, 138, 138, 138,
138, 138, 138, 139, 0, 139, 139, 139, 139, 139,
139, 139, 139, 139, 140, 140, 140, 141, 141, 141,
54, 54, 54, 54, 56, 57, 56, 57, 70, 56,
56, 56, 70, 56, 86, 56, 56, 58, 58, 67,
67, 72, 72, 91, 67, 91, 58, 71, 72, 75,
75, 76, 76, 77, 77, 61, 76, 79, 79, 80,
80, 96, 110, 96, 80, 88, 110, 88, 102, 102,
88, 88, 88, 88, 88, 88, 88, 88, 90, 60,
90, 99, 99, 90, 90, 90, 99, 90, 53, 90,
90, 94, 51, 94, 100, 100, 94, 94, 94, 100,
94, 48, 94, 94, 98, 98, 103, 103, 47, 104,
104, 103, 31, 98, 104, 30, 98, 106, 106, 107,
107, 98, 106, 24, 107, 111, 111, 113, 113, 115,
115, 116, 116, 115, 117, 117, 113, 121, 116, 118,
118, 117, 121, 122, 122, 124, 124, 124, 124, 124,
124, 124, 124, 124, 124, 124, 125, 125, 125, 125,
125, 125, 125, 125, 125, 125, 125, 126, 126, 126,
126, 126, 126, 126, 126, 126, 126, 126, 127, 127,
127, 127, 127, 127, 127, 127, 127, 127, 127, 128,
128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
129, 129, 129, 129, 129, 129, 129, 129, 129, 129,
129, 130, 23, 19, 130, 130, 131, 131, 132, 132,
132, 132, 15, 132, 132, 132, 132, 132, 132, 133,
133, 133, 133, 133, 10, 133, 133, 133, 133, 133,
134, 9, 8, 134, 134, 135, 135, 135, 7, 135,
135, 135, 135, 135, 135, 135, 136, 136, 136, 136,
4, 136, 136, 136, 136, 136, 136, 137, 137, 137,
137, 3, 137, 137, 137, 137, 137, 138, 138, 138,
138, 138, 138, 138, 138, 138, 138, 138, 139, 0,
139, 139, 139, 139, 139, 139, 139, 139, 139, 140,
140, 140, 141, 141, 141, 123, 123, 123, 123, 123,
123, 123, 123, 123, 123, 123, 123, 123, 123, 123,
123, 123, 123, 123, 123, 123, 123, 123, 123, 123,
123, 123
123, 123, 123, 123, 123, 123, 123
} ;
static yy_state_type yy_state_buf[YY_BUF_SIZE + 2], *yy_state_ptr;
......@@ -541,7 +539,7 @@ char *yytext;
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/Attic/scan.c,v 1.3 1997/11/26 01:11:38 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/Attic/scan.c,v 1.4 1997/11/30 23:05:39 thomas Exp $
*
*-------------------------------------------------------------------------
*/
......@@ -593,28 +591,28 @@ int llen;
char literal[MAX_PARSE_BUFFER];
/* OK, here is a short description of lex/flex rules behavior.
* The longest pattern which matches an input string is always chosen.
* For equal-length patterns, the first occurring in the rules list is chosen.
* INITIAL is the starting condition, to which all non-conditional rules apply.
* When in an exclusive condition, only those rules defined for that condition apply.
*
* Exclusive states change parsing rules while the state is active.
* There are exclusive states for quoted strings, extended comments,
* and to eliminate parsing troubles for numeric strings.
* Exclusive states:
* <xb> binary numeric string - thomas 1997-11-16
* <xh> hexadecimal numeric string - thomas 1997-11-16
* <xc> extended C-style comments - tgl 1997-07-12
* <xq> quoted strings - tgl 1997-07-30
* <xm> numeric strings with embedded minus sign - tgl 1997-09-05
* <xd> delimited identifiers (double-quoted identifiers) - tgl 1997-10-27
*
* The "extended comment" syntax closely resembles allowable operator syntax.
* So, when in condition <xc>, only strings which would terminate the
* "extended comment" trigger any action other than "ignore".
* Be sure to match _any_ candidate comment, including those with appended
* operator-like symbols. - thomas 1997-07-14
*/
* The longest pattern which matches an input string is always chosen.
* For equal-length patterns, the first occurring in the rules list is chosen.
* INITIAL is the starting condition, to which all non-conditional rules apply.
* When in an exclusive condition, only those rules defined for that condition apply.
*
* Exclusive states change parsing rules while the state is active.
* There are exclusive states for quoted strings, extended comments,
* and to eliminate parsing troubles for numeric strings.
* Exclusive states:
* <xb> binary numeric string - thomas 1997-11-16
* <xc> extended C-style comments - tgl 1997-07-12
* <xd> delimited identifiers (double-quoted identifiers) - tgl 1997-10-27
* <xh> hexadecimal numeric string - thomas 1997-11-16
* <xm> numeric strings with embedded minus sign - tgl 1997-09-05
* <xq> quoted strings - tgl 1997-07-30
*
* The "extended comment" syntax closely resembles allowable operator syntax.
* So, when in condition <xc>, only strings which would terminate the
* "extended comment" trigger any action other than "ignore".
* Be sure to match _any_ candidate comment, including those with appended
* operator-like symbols. - thomas 1997-07-14
*/
#define xb 1
#define xc 2
......@@ -623,10 +621,24 @@ char literal[MAX_PARSE_BUFFER];
#define xh 4
#define xq 5
#define xm 5
#define xm 6
#define xq 6
/* Binary number
*/
/* Hexadecimal number
*/
/* Extended quote
* xqdouble implements SQL92 embedded quote
* xqcat allows strings to cross input lines
*/
/* Delimited quote
* Allows embedded spaces and other special characters into identifiers.
*/
/* Comments
* Ignored by the scanner and parser.
*/
/* DO NOT PUT ANY COMMENTS IN THE FOLLOWING SECTION.
* AT&T lex does not properly handle C-style comments in this second lex block.
* So, put comments here. tgl - 1997-09-08
......@@ -639,7 +651,7 @@ char literal[MAX_PARSE_BUFFER];
* Other embedded escaped characters are matched explicitly and the leading
* backslash is dropped from the string. - thomas 1997-09-24
*/
#line 643 "lex.yy.c"
#line 655 "lex.yy.c"
/* Macros after this point can all be overridden by user definitions in
* section 1.
......@@ -790,9 +802,9 @@ YY_DECL
register char *yy_cp, *yy_bp;
register int yy_act;
#line 164 "scan.l"
#line 178 "scan.l"
#line 796 "lex.yy.c"
#line 808 "lex.yy.c"
if ( yy_init )
{
......@@ -847,7 +859,7 @@ yy_match:
*yy_state_ptr++ = yy_current_state;
++yy_cp;
}
while ( yy_base[yy_current_state] != 401 );
while ( yy_base[yy_current_state] != 396 );
yy_find_action:
yy_current_state = *--yy_state_ptr;
......@@ -898,34 +910,34 @@ do_action: /* This label is used only to access EOF actions. */
{ /* beginning of action switch */
case 1:
YY_RULE_SETUP
#line 165 "scan.l"
#line 179 "scan.l"
{ /* ignore */ }
YY_BREAK
case 2:
YY_RULE_SETUP
#line 167 "scan.l"
#line 181 "scan.l"
{ /* ignore */ }
YY_BREAK
case 3:
#line 170 "scan.l"
#line 184 "scan.l"
case 4:
YY_RULE_SETUP
#line 170 "scan.l"
#line 184 "scan.l"
{ BEGIN(xc); }
YY_BREAK
case 5:
YY_RULE_SETUP
#line 172 "scan.l"
#line 186 "scan.l"
{ BEGIN(INITIAL); }
YY_BREAK
case 6:
YY_RULE_SETUP
#line 174 "scan.l"
#line 188 "scan.l"
{ /* ignore */ }
YY_BREAK
case 7:
YY_RULE_SETUP
#line 176 "scan.l"
#line 190 "scan.l"
{
BEGIN(xb);
llen = 0;
......@@ -934,7 +946,7 @@ YY_RULE_SETUP
YY_BREAK
case 8:
YY_RULE_SETUP
#line 181 "scan.l"
#line 195 "scan.l"
{
char* endptr;
......@@ -947,10 +959,10 @@ YY_RULE_SETUP
}
YY_BREAK
case 9:
#line 192 "scan.l"
#line 206 "scan.l"
case 10:
YY_RULE_SETUP
#line 192 "scan.l"
#line 206 "scan.l"
{
if ((llen+yyleng) > (MAX_PARSE_BUFFER - 1))
elog(WARN,"quoted string parse buffer of %d chars exceeded",MAX_PARSE_BUFFER);
......@@ -959,16 +971,16 @@ YY_RULE_SETUP
}
YY_BREAK
case 11:
#line 199 "scan.l"
#line 213 "scan.l"
case 12:
YY_RULE_SETUP
#line 199 "scan.l"
#line 213 "scan.l"
{
}
YY_BREAK
case 13:
YY_RULE_SETUP
#line 202 "scan.l"
#line 216 "scan.l"
{
BEGIN(xh);
llen = 0;
......@@ -977,7 +989,7 @@ YY_RULE_SETUP
YY_BREAK
case 14:
YY_RULE_SETUP
#line 207 "scan.l"
#line 221 "scan.l"
{
char* endptr;
......@@ -991,7 +1003,7 @@ YY_RULE_SETUP
YY_BREAK
case 15:
YY_RULE_SETUP
#line 218 "scan.l"
#line 232 "scan.l"
{
BEGIN(xq);
llen = 0;
......@@ -1000,7 +1012,7 @@ YY_RULE_SETUP
YY_BREAK
case 16:
YY_RULE_SETUP
#line 223 "scan.l"
#line 237 "scan.l"
{
BEGIN(INITIAL);
yylval.str = pstrdup(scanstr(literal));
......@@ -1008,10 +1020,10 @@ YY_RULE_SETUP
}
YY_BREAK
case 17:
#line 229 "scan.l"
#line 243 "scan.l"
case 18:
YY_RULE_SETUP
#line 229 "scan.l"
#line 243 "scan.l"
{
if ((llen+yyleng) > (MAX_PARSE_BUFFER - 1))
elog(WARN,"quoted string parse buffer of %d chars exceeded",MAX_PARSE_BUFFER);
......@@ -1021,7 +1033,7 @@ YY_RULE_SETUP
YY_BREAK
case 19:
YY_RULE_SETUP
#line 235 "scan.l"
#line 249 "scan.l"
{
if ((llen+yyleng-1) > (MAX_PARSE_BUFFER - 1))
elog(WARN,"quoted string parse buffer of %d chars exceeded",MAX_PARSE_BUFFER);
......@@ -1032,7 +1044,7 @@ YY_RULE_SETUP
YY_BREAK
case 20:
YY_RULE_SETUP
#line 243 "scan.l"
#line 257 "scan.l"
{
if ((llen+yyleng-1) > (MAX_PARSE_BUFFER - 1))
elog(WARN,"quoted string parse buffer of %d chars exceeded",MAX_PARSE_BUFFER);
......@@ -1042,13 +1054,13 @@ YY_RULE_SETUP
YY_BREAK
case 21:
YY_RULE_SETUP
#line 249 "scan.l"
#line 263 "scan.l"
{
}
YY_BREAK
case 22:
YY_RULE_SETUP
#line 253 "scan.l"
#line 267 "scan.l"
{
BEGIN(xd);
llen = 0;
......@@ -1057,7 +1069,7 @@ YY_RULE_SETUP
YY_BREAK
case 23:
YY_RULE_SETUP
#line 258 "scan.l"
#line 272 "scan.l"
{
BEGIN(INITIAL);
yylval.str = pstrdup(literal);
......@@ -1066,7 +1078,7 @@ YY_RULE_SETUP
YY_BREAK
case 24:
YY_RULE_SETUP
#line 263 "scan.l"
#line 277 "scan.l"
{
if ((llen+yyleng) > (MAX_PARSE_BUFFER - 1))
elog(WARN,"quoted string parse buffer of %d chars exceeded",MAX_PARSE_BUFFER);
......@@ -1076,12 +1088,12 @@ YY_RULE_SETUP
YY_BREAK
case 25:
YY_RULE_SETUP
#line 271 "scan.l"
#line 285 "scan.l"
{ /* ignore */ }
YY_BREAK
case 26:
YY_RULE_SETUP
#line 272 "scan.l"
#line 286 "scan.l"
{
BEGIN(INITIAL);
return (yytext[0]);
......@@ -1089,7 +1101,7 @@ YY_RULE_SETUP
YY_BREAK
case 27:
YY_RULE_SETUP
#line 278 "scan.l"
#line 292 "scan.l"
{ return TYPECAST; }
YY_BREAK
case 28:
......@@ -1097,14 +1109,14 @@ case 28:
yy_c_buf_p = yy_cp = yy_bp + 1;
YY_DO_BEFORE_ACTION; /* set up yytext again */
YY_RULE_SETUP
#line 280 "scan.l"
#line 294 "scan.l"
{
return (yytext[0]);
}
YY_BREAK
case 29:
YY_RULE_SETUP
#line 283 "scan.l"
#line 297 "scan.l"
{ return (yytext[0]); }
YY_BREAK
case 30:
......@@ -1112,7 +1124,7 @@ case 30:
yy_c_buf_p = yy_cp -= 2;
YY_DO_BEFORE_ACTION; /* set up yytext again */
YY_RULE_SETUP
#line 284 "scan.l"
#line 298 "scan.l"
{
yylval.str = pstrdup((char*)yytext);
return (Op);
......@@ -1120,7 +1132,7 @@ YY_RULE_SETUP
YY_BREAK
case 31:
YY_RULE_SETUP
#line 288 "scan.l"
#line 302 "scan.l"
{
if (strcmp((char*)yytext,"!=") == 0)
yylval.str = pstrdup("<>"); /* compatability */
......@@ -1131,7 +1143,7 @@ YY_RULE_SETUP
YY_BREAK
case 32:
YY_RULE_SETUP
#line 295 "scan.l"
#line 309 "scan.l"
{
yylval.ival = atoi((char*)&yytext[1]);
return (PARAM);
......@@ -1139,7 +1151,7 @@ YY_RULE_SETUP
YY_BREAK
case 33:
YY_RULE_SETUP
#line 300 "scan.l"
#line 314 "scan.l"
{
char* endptr;
......@@ -1153,7 +1165,7 @@ YY_RULE_SETUP
YY_BREAK
case 34:
YY_RULE_SETUP
#line 310 "scan.l"
#line 324 "scan.l"
{
char* endptr;
......@@ -1168,7 +1180,7 @@ YY_RULE_SETUP
YY_BREAK
case 35:
YY_RULE_SETUP
#line 321 "scan.l"
#line 335 "scan.l"
{
char* endptr;
......@@ -1181,7 +1193,7 @@ YY_RULE_SETUP
YY_BREAK
case 36:
YY_RULE_SETUP
#line 330 "scan.l"
#line 344 "scan.l"
{
char* endptr;
......@@ -1195,7 +1207,7 @@ YY_RULE_SETUP
YY_BREAK
case 37:
YY_RULE_SETUP
#line 340 "scan.l"
#line 354 "scan.l"
{
int i;
ScanKeyword *keyword;
......@@ -1217,27 +1229,27 @@ YY_RULE_SETUP
YY_BREAK
case 38:
YY_RULE_SETUP
#line 358 "scan.l"
#line 372 "scan.l"
{ /* ignore */ }
YY_BREAK
case 39:
YY_RULE_SETUP
#line 360 "scan.l"
#line 374 "scan.l"
{ return (yytext[0]); }
YY_BREAK
case 40:
YY_RULE_SETUP
#line 362 "scan.l"
#line 376 "scan.l"
ECHO;
YY_BREAK
#line 1234 "lex.yy.c"
#line 1246 "lex.yy.c"
case YY_STATE_EOF(INITIAL):
case YY_STATE_EOF(xb):
case YY_STATE_EOF(xc):
case YY_STATE_EOF(xd):
case YY_STATE_EOF(xh):
case YY_STATE_EOF(xq):
case YY_STATE_EOF(xm):
case YY_STATE_EOF(xq):
yyterminate();
case YY_END_OF_BUFFER:
......@@ -2116,7 +2128,7 @@ int main()
return 0;
}
#endif
#line 362 "scan.l"
#line 376 "scan.l"
void yyerror(char message[])
......
src/backend/parser/scan.l
View file @ 361f9e7f
......@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/scan.l,v 1.30 1997/11/20 23:22:25 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/scan.l,v 1.31 1997/11/30 23:05:36 thomas Exp $
*
*-------------------------------------------------------------------------
*/
......@@ -60,7 +60,7 @@ int llen;
char literal[MAX_PARSE_BUFFER];
%}
/* OK, here is a short description of lex/flex rules behavior.
/* OK, here is a short description of lex/flex rules behavior.
* The longest pattern which matches an input string is always chosen.
* For equal-length patterns, the first occurring in the rules list is chosen.
* INITIAL is the starting condition, to which all non-conditional rules apply.
......@@ -71,11 +71,11 @@ char literal[MAX_PARSE_BUFFER];
* and to eliminate parsing troubles for numeric strings.
* Exclusive states:
* <xb> binary numeric string - thomas 1997-11-16
* <xh> hexadecimal numeric string - thomas 1997-11-16
* <xc> extended C-style comments - tgl 1997-07-12
* <xq> quoted strings - tgl 1997-07-30
* <xm> numeric strings with embedded minus sign - tgl 1997-09-05
* <xd> delimited identifiers (double-quoted identifiers) - tgl 1997-10-27
* <xh> hexadecimal numeric string - thomas 1997-11-16
* <xm> numeric strings with embedded minus sign - tgl 1997-09-05
* <xq> quoted strings - tgl 1997-07-30
*
* The "extended comment" syntax closely resembles allowable operator syntax.
* So, when in condition <xc>, only strings which would terminate the
......@@ -88,33 +88,47 @@ char literal[MAX_PARSE_BUFFER];
%x xc
%x xd
%x xh
%x xq
%x xm
%x xq
quote '
xqstart {quote}
xqstop {quote}
xqdouble {quote}{quote}
xqinside [^\\']*
xqembedded "\\'"
xqliteral [\\](.|\n)
xqcat {quote}{space}*\n{space}*{quote}
/* Binary number
*/
xbstart [bB]{quote}
xbstop {quote}
xbinside [^']*
xbcat {quote}{space}*\n{space}*{quote}
/* Hexadecimal number
*/
xhstart [xX]{quote}
xhstop {quote}
xhinside [^']*
xhcat {quote}{space}*\n{space}*{quote}
/* Extended quote
* xqdouble implements SQL92 embedded quote
* xqcat allows strings to cross input lines
*/
quote '
xqstart {quote}
xqstop {quote}
xqdouble {quote}{quote}
xqinside [^\\']*
xqembedded "\\'"
xqliteral [\\](.|\n)
xqcat {quote}{space}*\n{space}*{quote}
/* Delimited quote
* Allows embedded spaces and other special characters into identifiers.
*/
dquote \"
xdstart {dquote}
xdstop {dquote}
xdinside [^"]*
/* Comments
* Ignored by the scanner and parser.
*/
xcline [\/][\*].*[\*][\/]{space}*\n*
xcstart [\/][\*]{op_and_self}*
xcstop {op_and_self}*[\*][\/]({space}*|\n)
......
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