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