/Users/deen/code/yugabyte-db/src/postgres/src/include/parser/gramparse.h
Line | Count | Source |
1 | | /*------------------------------------------------------------------------- |
2 | | * |
3 | | * gramparse.h |
4 | | * Shared definitions for the "raw" parser (flex and bison phases only) |
5 | | * |
6 | | * NOTE: this file is only meant to be included in the core parsing files, |
7 | | * ie, parser.c, gram.y, scan.l, and src/common/keywords.c. |
8 | | * Definitions that are needed outside the core parser should be in parser.h. |
9 | | * |
10 | | * |
11 | | * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group |
12 | | * Portions Copyright (c) 1994, Regents of the University of California |
13 | | * |
14 | | * src/include/parser/gramparse.h |
15 | | * |
16 | | *------------------------------------------------------------------------- |
17 | | */ |
18 | | |
19 | | #ifndef GRAMPARSE_H |
20 | | #define GRAMPARSE_H |
21 | | |
22 | | #include "nodes/parsenodes.h" |
23 | | #include "parser/scanner.h" |
24 | | |
25 | | /* |
26 | | * NB: include gram.h only AFTER including scanner.h, because scanner.h |
27 | | * is what #defines YYLTYPE. |
28 | | */ |
29 | | #include "parser/gram.h" |
30 | | |
31 | | /* |
32 | | * The YY_EXTRA data that a flex scanner allows us to pass around. Private |
33 | | * state needed for raw parsing/lexing goes here. |
34 | | */ |
35 | | typedef struct base_yy_extra_type |
36 | | { |
37 | | /* |
38 | | * Fields used by the core scanner. |
39 | | */ |
40 | | core_yy_extra_type core_yy_extra; |
41 | | |
42 | | /* |
43 | | * State variables for base_yylex(). |
44 | | */ |
45 | | bool have_lookahead; /* is lookahead info valid? */ |
46 | | int lookahead_token; /* one-token lookahead */ |
47 | | core_YYSTYPE lookahead_yylval; /* yylval for lookahead token */ |
48 | | YYLTYPE lookahead_yylloc; /* yylloc for lookahead token */ |
49 | | char *lookahead_end; /* end of current token */ |
50 | | char lookahead_hold_char; /* to be put back at *lookahead_end */ |
51 | | |
52 | | /* |
53 | | * State variables that belong to the grammar. |
54 | | */ |
55 | | List *parsetree; /* final parse result is delivered here */ |
56 | | } base_yy_extra_type; |
57 | | |
58 | | /* |
59 | | * In principle we should use yyget_extra() to fetch the yyextra field |
60 | | * from a yyscanner struct. However, flex always puts that field first, |
61 | | * and this is sufficiently performance-critical to make it seem worth |
62 | | * cheating a bit to use an inline macro. |
63 | | */ |
64 | 5.77M | #define pg_yyget_extra(yyscanner) (*((base_yy_extra_type **) (yyscanner))) |
65 | | |
66 | | |
67 | | /* from parser.c */ |
68 | | extern int base_yylex(YYSTYPE *lvalp, YYLTYPE *llocp, |
69 | | core_yyscan_t yyscanner); |
70 | | |
71 | | /* from gram.y */ |
72 | | extern void parser_init(base_yy_extra_type *yyext); |
73 | | extern int base_yyparse(core_yyscan_t yyscanner); |
74 | | |
75 | | #endif /* GRAMPARSE_H */ |