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