1 /* parser.h -- Everything you wanted to know about the parser, but were
4 /* Copyright (C) 1995-2010 Free Software Foundation, Inc.
6 This file is part of GNU Bash, the Bourne Again SHell.
8 Bash is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 Bash is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with Bash. If not, see <http://www.gnu.org/licenses/>.
22 #if !defined (_PARSER_H_)
28 /* Possible states for the parser that require it to do special things. */
29 #define PST_CASEPAT 0x000001 /* in a case pattern list */
30 #define PST_ALEXPNEXT 0x000002 /* expand next word for aliases */
31 #define PST_ALLOWOPNBRC 0x000004 /* allow open brace for function def */
32 #define PST_NEEDCLOSBRC 0x000008 /* need close brace */
33 #define PST_DBLPAREN 0x000010 /* double-paren parsing */
34 #define PST_SUBSHELL 0x000020 /* ( ... ) subshell */
35 #define PST_CMDSUBST 0x000040 /* $( ... ) command substitution */
36 #define PST_CASESTMT 0x000080 /* parsing a case statement */
37 #define PST_CONDCMD 0x000100 /* parsing a [[...]] command */
38 #define PST_CONDEXPR 0x000200 /* parsing the guts of [[...]] */
39 #define PST_ARITHFOR 0x000400 /* parsing an arithmetic for command - unused */
40 #define PST_ALEXPAND 0x000800 /* OK to expand aliases - unused */
41 #define PST_EXTPAT 0x001000 /* parsing an extended shell pattern */
42 #define PST_COMPASSIGN 0x002000 /* parsing x=(...) compound assignment */
43 #define PST_ASSIGNOK 0x004000 /* assignment statement ok in this context */
44 #define PST_EOFTOKEN 0x008000 /* yylex checks against shell_eof_token */
45 #define PST_REGEXP 0x010000 /* parsing an ERE/BRE as a single word */
46 #define PST_HEREDOC 0x020000 /* reading body of here-document */
47 #define PST_REPARSE 0x040000 /* re-parsing in parse_string_to_word_list */
48 #define PST_REDIRLIST 0x080000 /* parsing a list of redirections preceding a simple command name */
51 /* Definition of the delimiter stack. Needed by parse.y and bashhist.c. */
53 /* DELIMITERS is a stack of the nested delimiters that we have
54 encountered so far. */
57 /* Offset into the stack of delimiters. */
60 /* How many slots are allocated to DELIMITERS. */
64 /* States we can be in while scanning a ${...} expansion. Shared between
65 parse.y and subst.c */
66 #define DOLBRACE_PARAM 0x01
67 #define DOLBRACE_OP 0x02
68 #define DOLBRACE_WORD 0x04
70 #define DOLBRACE_QUOTE 0x40 /* single quote is special in double quotes */
71 #define DOLBRACE_QUOTE2 0x80 /* single quote is semi-special in double quotes */
73 #endif /* _PARSER_H_ */