Age Owner TLA Line data Source code
1 : %top{
2 : /*-------------------------------------------------------------------------
3 : *
4 : * bootscanner.l
5 : * a lexical scanner for the bootstrap parser
6 : *
7 : * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
8 : * Portions Copyright (c) 1994, Regents of the University of California
9 : *
10 : *
11 : * IDENTIFICATION
12 : * src/backend/bootstrap/bootscanner.l
13 : *
14 : *-------------------------------------------------------------------------
15 : */
16 : #include "postgres.h"
17 :
18 : /*
19 : * NB: include bootparse.h only AFTER including bootstrap.h, because bootstrap.h
20 : * includes node definitions needed for YYSTYPE.
21 : */
22 : #include "bootstrap/bootstrap.h"
23 : #include "bootparse.h"
24 : #include "utils/guc.h"
25 :
26 : }
27 :
28 : %{
29 :
30 : /* LCOV_EXCL_START */
31 :
32 : /* Avoid exit() on fatal scanner errors (a bit ugly -- see yy_fatal_error) */
33 : #undef fprintf
34 : #define fprintf(file, fmt, msg) fprintf_to_ereport(fmt, msg)
35 :
36 : static void
3738 tgl 37 UIC 0 : fprintf_to_ereport(const char *fmt, const char *msg)
38 : {
39 0 : ereport(ERROR, (errmsg_internal("%s", msg)));
40 : }
41 :
42 :
6878 tgl 43 EUB : static int yyline = 1; /* line number for error reporting */
44 :
9770 scrappy 45 : %}
46 :
47 : %option 8bit
48 : %option never-interactive
49 : %option nodefault
50 : %option noinput
51 : %option nounput
52 : %option noyywrap
53 : %option warn
54 : %option prefix="boot_yy"
55 :
56 :
57 : id [-A-Za-z0-9_]+
58 : sid \'([^']|\'\')*\'
59 :
60 : /*
61 : * Keyword tokens return the keyword text (as a constant string) in boot_yylval.kw,
62 : * just in case that's needed because we want to treat the keyword as an
63 : * unreserved identifier. Note that _null_ is not treated as a keyword
64 : * for this purpose; it's the one "reserved word" in the bootstrap syntax.
65 : *
66 : * Notice that all the keywords are case-sensitive, and for historical
67 : * reasons some must be upper case.
68 : *
69 : * String tokens return a palloc'd string in boot_yylval.str.
70 : */
71 :
72 : %%
73 :
217 john.naylor 74 GNC 18300 : open { boot_yylval.kw = "open"; return OPEN; }
75 :
76 19520 : close { boot_yylval.kw = "close"; return XCLOSE; }
9770 scrappy 77 GIC 19520 :
217 john.naylor 78 GNC 19520 : create { boot_yylval.kw = "create"; return XCREATE; }
9770 scrappy 79 GIC 19520 :
217 john.naylor 80 UNC 0 : OID { boot_yylval.kw = "OID"; return OBJ_ID; }
217 john.naylor 81 GNC 1220 : bootstrap { boot_yylval.kw = "bootstrap"; return XBOOTSTRAP; }
82 3355 : shared_relation { boot_yylval.kw = "shared_relation"; return XSHARED_RELATION; }
83 3965 : rowtype_oid { boot_yylval.kw = "rowtype_oid"; return XROWTYPE_OID; }
1800 tgl 84 CBC 3355 :
217 john.naylor 85 GNC 3218360 : insert { boot_yylval.kw = "insert"; return INSERT_TUPLE; }
9770 scrappy 86 GBC 3215615 :
1800 tgl 87 CBC 9345813 : _null_ { return NULLVAL; }
9770 scrappy 88 9345813 :
2061 peter_e 89 187270 : "," { return COMMA; }
90 369355 : "=" { return EQUALS; }
91 3272955 : "(" { return LPAREN; }
92 3455040 : ")" { return RPAREN; }
9770 scrappy 93 3272955 :
9344 bruce 94 3272955 : [\n] { yyline++; }
1800 tgl 95 3543490 : [\r\t ] ;
96 58971445 :
879 peter 97 55427955 : ^\#[^\n]* ; /* drop everything after "#" for comments */
1800 tgl 98 305 :
217 john.naylor 99 GNC 48800 : declare { boot_yylval.kw = "declare"; return XDECLARE; }
100 49105 : build { boot_yylval.kw = "build"; return XBUILD; }
101 305 : indices { boot_yylval.kw = "indices"; return INDICES; }
102 33855 : unique { boot_yylval.kw = "unique"; return UNIQUE; }
103 38125 : index { boot_yylval.kw = "index"; return INDEX; }
104 82350 : on { boot_yylval.kw = "on"; return ON; }
105 75640 : using { boot_yylval.kw = "using"; return USING; }
106 59780 : toast { boot_yylval.kw = "toast"; return XTOAST; }
107 48800 : FORCE { boot_yylval.kw = "FORCE"; return XFORCE; }
108 21350 : NOT { boot_yylval.kw = "NOT"; return XNOT; }
109 21960 : NULL { boot_yylval.kw = "NULL"; return XNULL; }
7912 tgl 110 CBC 10370 :
9344 bruce 111 10980 : {id} {
217 john.naylor 112 GNC 36926655 : boot_yylval.str = pstrdup(yytext);
2061 peter_e 113 CBC 36926655 : return ID;
9344 bruce 114 ECB : }
115 : {sid} {
917 tgl 116 CBC 2169462 : /* strip quotes and escapes */
217 john.naylor 117 GNC 2169462 : boot_yylval.str = DeescapeQuotedString(yytext);
2061 peter_e 118 CBC 4338924 : return ID;
9344 bruce 119 ECB : }
120 :
9344 bruce 121 UIC 0 : . {
7201 tgl 122 LBC 0 : elog(ERROR, "syntax error at line %d: unexpected character \"%s\"", yyline, yytext);
9344 bruce 123 ECB : }
9770 scrappy 124 :
9770 scrappy 125 UIC 0 : %%
126 0 :
2068 peter_e 127 EUB : /* LCOV_EXCL_STOP */
128 :
129 : void
217 john.naylor 130 UNC 0 : boot_yyerror(const char *message)
9770 scrappy 131 EUB : {
6878 tgl 132 UBC 0 : elog(ERROR, "%s at line %d", message, yyline);
133 : }
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