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Add comments and move a few declaration blocks to help readability. 

No functional changes this time!
This commit is contained in:
Thomas G. Lockhart 1997-11-30 23:05:39 +00:00
parent b12ba5f695
commit 361f9e7f8d
2 changed files with 241 additions and 215 deletions
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372
src/backend/parser/scan.c
View File

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

46
src/backend/parser/scan.l
View File

@ -8,7 +8,7 @@
* *
* *
* IDENTIFICATION * 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]; 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. * The longest pattern which matches an input string is always chosen.
* For equal-length patterns, the first occurring in the rules list is 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. * 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. * and to eliminate parsing troubles for numeric strings.
* Exclusive states: * Exclusive states:
* <xb> binary numeric string - thomas 1997-11-16 * <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 * <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 * <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. * The "extended comment" syntax closely resembles allowable operator syntax.
* So, when in condition <xc>, only strings which would terminate the * So, when in condition <xc>, only strings which would terminate the
@ -88,9 +88,27 @@ char literal[MAX_PARSE_BUFFER];
%x xc %x xc
%x xd %x xd
%x xh %x xh
%x xq
%x xm %x xm
%x xq
/* 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 ' quote '
xqstart {quote} xqstart {quote}
xqstop {quote} xqstop {quote}
@ -100,21 +118,17 @@ xqembedded "\\'"
xqliteral [\\](.|\n) xqliteral [\\](.|\n)
xqcat {quote}{space}*\n{space}*{quote} xqcat {quote}{space}*\n{space}*{quote}
xbstart [bB]{quote} /* Delimited quote
xbstop {quote} * Allows embedded spaces and other special characters into identifiers.
xbinside [^']* */
xbcat {quote}{space}*\n{space}*{quote}
xhstart [xX]{quote}
xhstop {quote}
xhinside [^']*
xhcat {quote}{space}*\n{space}*{quote}
dquote \" dquote \"
xdstart {dquote} xdstart {dquote}
xdstop {dquote} xdstop {dquote}
xdinside [^"]* xdinside [^"]*
/* Comments
* Ignored by the scanner and parser.
*/
xcline [\/][\*].*[\*][\/]{space}*\n* xcline [\/][\*].*[\*][\/]{space}*\n*
xcstart [\/][\*]{op_and_self}* xcstart [\/][\*]{op_and_self}*
xcstop {op_and_self}*[\*][\/]({space}*|\n) xcstop {op_and_self}*[\*][\/]({space}*|\n)