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[SCM] GNU M4 source repository branch, master, updated. cvs-readonly-63-
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From: |
Eric Blake |
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Subject: |
[SCM] GNU M4 source repository branch, master, updated. cvs-readonly-63-g5d083e4 |
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Date: |
Sat, 16 Feb 2008 13:55:46 +0000 |
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http://git.sv.gnu.org/gitweb/?p=m4.git;a=commitdiff;h=5d083e4726ed578b093aaf82e2a5a542f5815dcd
The branch, master has been updated
via 5d083e4726ed578b093aaf82e2a5a542f5815dcd (commit)
from 7f0b47b96e8872513aae3a4e3819aef6d799e6bd (commit)
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- Log -----------------------------------------------------------------
commit 5d083e4726ed578b093aaf82e2a5a542f5815dcd
Author: Eric Blake <address@hidden>
Date: Fri Feb 15 22:12:03 2008 -0700
Stage 15: return argv refs back to collect_arguments.
* m4/m4private.h (CHAR_ARGV): New input engine sentinel.
(enum m4__token_type): Add M4_TOKEN_ARGV.
(struct m4__symbol_chain): Add skip_last member to argv link.
(m4__next_token): Add parameter.
* m4/input.c (peek_char, file_peek, builtin_peek, string_peek)
(composite_peek, m4__next_token): Add new parameter.
(composite_read, append_quote_token): Support argv in quotes.
(init_argv_symbol): New function.
(m4__push_symbol, match_input, consume_syntax)
(m4__next_token_is_open, m4_print_token): Adjust callers.
* m4/macro.c (m4_macro_expand_input, m4__arg_adjust_refcount)
(arg_mark, m4_arg_text, make_argv_ref): Likewise.
(expand_argument, collect_arguments): Handle new token.
(arg_symbol): Drill through $@ reference.
* m4/syntax.c (set_quote_age): Detect disabled comments.
* m4/symtab.c (dump_symbol_CB) [DEBUG_SYM]: Fix debug code.
Signed-off-by: Eric Blake <address@hidden>
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 26 +++++++
m4/input.c | 207 +++++++++++++++++++++++++++++++++++++++++---------------
m4/m4private.h | 9 ++-
m4/macro.c | 114 ++++++++++++++++++++++++-------
m4/symtab.c | 2 +-
m4/syntax.c | 8 ++-
6 files changed, 277 insertions(+), 89 deletions(-)
diff --git a/ChangeLog b/ChangeLog
index 0e3c93e..d0ba987 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,29 @@
+2008-02-16 Eric Blake <address@hidden>
+
+ Stage 15: return argv refs back to collect_arguments.
+ Collect an entire $@ reference at once rather than one argument at
+ a time, outside of quotes (but inside quotes, $@ is still
+ flattened for now). The skip_last field allows concatenation of
+ $@ with other text when collecting arguments.
+ Memory impact: noticeable improvement, due to better reuse of
address@hidden
+ Speed impact: noticeable improvement, due to less parsing.
+ * m4/m4private.h (CHAR_ARGV): New input engine sentinel.
+ (enum m4__token_type): Add M4_TOKEN_ARGV.
+ (struct m4__symbol_chain): Add skip_last member to argv link.
+ (m4__next_token): Add parameter.
+ * m4/input.c (peek_char, file_peek, builtin_peek, string_peek)
+ (composite_peek, m4__next_token): Add new parameter.
+ (composite_read, append_quote_token): Support argv in quotes.
+ (init_argv_symbol): New function.
+ (m4__push_symbol, match_input, consume_syntax)
+ (m4__next_token_is_open, m4_print_token): Adjust callers.
+ * m4/macro.c (m4_macro_expand_input, m4__arg_adjust_refcount)
+ (arg_mark, m4_arg_text, make_argv_ref): Likewise.
+ (expand_argument, collect_arguments): Handle new token.
+ (arg_symbol): Drill through $@ reference.
+ * m4/syntax.c (set_quote_age): Detect disabled comments.
+ * m4/symtab.c (dump_symbol_CB) [DEBUG_SYM]: Fix debug code.
+
2008-02-15 Eric Blake <address@hidden>
* modules/gnu.c (regexp_compile): Use a fastmap for regex speed.
diff --git a/m4/input.c b/m4/input.c
index 025ae0d..b5d50a1 100644
--- a/m4/input.c
+++ b/m4/input.c
@@ -92,20 +92,20 @@
maintains its own notion of the current file and line, so swapping
between input blocks must update the context accordingly. */
-static int file_peek (m4_input_block *, m4 *);
+static int file_peek (m4_input_block *, m4 *, bool);
static int file_read (m4_input_block *, m4 *, bool, bool);
static void file_unget (m4_input_block *, int);
static bool file_clean (m4_input_block *, m4 *, bool);
static void file_print (m4_input_block *, m4 *, m4_obstack *);
-static int builtin_peek (m4_input_block *, m4 *);
+static int builtin_peek (m4_input_block *, m4 *, bool);
static int builtin_read (m4_input_block *, m4 *, bool, bool);
static void builtin_unget (m4_input_block *, int);
static void builtin_print (m4_input_block *, m4 *, m4_obstack *);
-static int string_peek (m4_input_block *, m4 *);
+static int string_peek (m4_input_block *, m4 *, bool);
static int string_read (m4_input_block *, m4 *, bool, bool);
static void string_unget (m4_input_block *, int);
static void string_print (m4_input_block *, m4 *, m4_obstack *);
-static int composite_peek (m4_input_block *, m4 *);
+static int composite_peek (m4_input_block *, m4 *, bool);
static int composite_read (m4_input_block *, m4 *, bool, bool);
static void composite_unget (m4_input_block *, int);
static bool composite_clean (m4_input_block *, m4 *, bool);
@@ -116,12 +116,14 @@ static void append_quote_token (m4 *,
m4_obstack *,
m4_symbol_value *);
static bool match_input (m4 *, const char *, bool);
static int next_char (m4 *, bool, bool);
-static int peek_char (m4 *);
+static int peek_char (m4 *, bool);
static bool pop_input (m4 *, bool);
static void unget_input (int);
static bool consume_syntax (m4 *, m4_obstack *, unsigned int);
#ifdef DEBUG_INPUT
+# include "quotearg.h"
+
static int m4_print_token (const char *, m4__token_type, m4_symbol_value *);
#endif
@@ -129,8 +131,9 @@ static int m4_print_token (const char *, m4__token_type,
m4_symbol_value *);
struct input_funcs
{
/* Peek at input, return an unsigned char, CHAR_BUILTIN if it is a
- builtin, or CHAR_RETRY if none available. */
- int (*peek_func) (m4_input_block *, m4 *);
+ builtin, or CHAR_RETRY if none available. If ALLOW_ARGV, then
+ CHAR_ARGV may be returned. */
+ int (*peek_func) (m4_input_block *, m4 *, bool);
/* Read input, return an unsigned char, CHAR_BUILTIN if it is a
builtin, or CHAR_RETRY if none available. If ALLOW_QUOTE, then
@@ -254,7 +257,8 @@ static struct input_funcs composite_funcs = {
/* Input files, from command line or [s]include. */
static int
-file_peek (m4_input_block *me, m4 *context M4_GNUC_UNUSED)
+file_peek (m4_input_block *me, m4 *context M4_GNUC_UNUSED,
+ bool allow_argv M4_GNUC_UNUSED)
{
int ch;
@@ -389,7 +393,8 @@ m4_push_file (m4 *context, FILE *fp, const char *title,
bool close_file)
/* Handle a builtin macro token. */
static int
-builtin_peek (m4_input_block *me, m4 *context M4_GNUC_UNUSED)
+builtin_peek (m4_input_block *me, m4 *context M4_GNUC_UNUSED,
+ bool allow_argv M4_GNUC_UNUSED)
{
if (me->u.u_b.read)
return CHAR_RETRY;
@@ -474,7 +479,8 @@ m4_push_builtin (m4 *context, m4_symbol_value *token)
/* Handle string expansion text. */
static int
-string_peek (m4_input_block *me, m4 *context M4_GNUC_UNUSED)
+string_peek (m4_input_block *me, m4 *context M4_GNUC_UNUSED,
+ bool allow_argv M4_GNUC_UNUSED)
{
return me->u.u_s.len ? to_uchar (*me->u.u_s.str) : CHAR_RETRY;
}
@@ -662,7 +668,7 @@ m4__push_symbol (m4 *context, m4_symbol_value *value,
size_t level, bool inuse)
next->u.u_c.end = chain;
if (chain->type == M4__CHAIN_ARGV)
{
- assert (!chain->u.u_a.comma);
+ assert (!chain->u.u_a.comma && !chain->u.u_a.skip_last);
inuse |= m4__arg_adjust_refcount (context, chain->u.u_a.argv, true);
}
else if (chain->type == M4__CHAIN_STR && chain->u.u_s.level < SIZE_MAX)
@@ -718,9 +724,11 @@ m4_push_string_finish (void)
in FIFO order, even though the obstack allocates memory in LIFO
order. */
static int
-composite_peek (m4_input_block *me, m4 *context)
+composite_peek (m4_input_block *me, m4 *context, bool allow_argv)
{
m4__symbol_chain *chain = me->u.u_c.chain;
+ size_t argc;
+
while (chain)
{
switch (chain->type)
@@ -730,12 +738,16 @@ composite_peek (m4_input_block *me, m4 *context)
return to_uchar (chain->u.u_s.str[0]);
break;
case M4__CHAIN_ARGV:
- /* TODO - figure out how to pass multiple arguments to
- macro.c at once. */
- if (chain->u.u_a.index == m4_arg_argc (chain->u.u_a.argv))
+ argc = m4_arg_argc (chain->u.u_a.argv);
+ if (chain->u.u_a.index == argc)
break;
if (chain->u.u_a.comma)
return ','; /* FIXME - support M4_SYNTAX_COMMA. */
+ /* Only return a reference in the quoting is correct and the
+ reference has more than one argument left. */
+ if (allow_argv && chain->quote_age == m4__quote_age (M4SYNTAX)
+ && chain->u.u_a.quotes && chain->u.u_a.index + 1 < argc)
+ return CHAR_ARGV;
/* Rather than directly parse argv here, we push another
input block containing the next unparsed argument from
argv. */
@@ -745,7 +757,7 @@ composite_peek (m4_input_block *me, m4 *context)
chain->u.u_a.index++;
chain->u.u_a.comma = true;
m4_push_string_finish ();
- return peek_char (context);
+ return peek_char (context, allow_argv);
default:
assert (!"composite_peek");
abort ();
@@ -761,9 +773,7 @@ composite_read (m4_input_block *me, m4 *context, bool
allow_quote, bool safe)
m4__symbol_chain *chain = me->u.u_c.chain;
while (chain)
{
- /* TODO also support returning $@ as CHAR_QUOTE. */
- if (allow_quote && chain->quote_age == m4__quote_age (M4SYNTAX)
- && chain->type == M4__CHAIN_STR)
+ if (allow_quote && chain->quote_age == m4__quote_age (M4SYNTAX))
return CHAR_QUOTE;
switch (chain->type)
{
@@ -779,8 +789,6 @@ composite_read (m4_input_block *me, m4 *context, bool
allow_quote, bool safe)
m4__adjust_refcount (context, chain->u.u_s.level, false);
break;
case M4__CHAIN_ARGV:
- /* TODO - figure out how to pass multiple arguments to
- macro.c at once. */
if (chain->u.u_a.index == m4_arg_argc (chain->u.u_a.argv))
{
m4__arg_adjust_refcount (context, chain->u.u_a.argv, false);
@@ -996,7 +1004,7 @@ pop_input (m4 *context, bool cleanup)
assert (isp);
if (isp->funcs->clean_func
? !isp->funcs->clean_func (isp, context, cleanup)
- : (isp->funcs->peek_func (isp, context) != CHAR_RETRY))
+ : (isp->funcs->peek_func (isp, context, true) != CHAR_RETRY))
return false;
if (tmp != NULL)
@@ -1073,18 +1081,28 @@ append_quote_token (m4 *context, m4_obstack *obs,
m4_symbol_value *value)
{
m4__symbol_chain *src_chain = isp->u.u_c.chain;
m4__symbol_chain *chain;
- assert (isp->funcs == &composite_funcs && obs && m4__quote_age (M4SYNTAX)
- && src_chain->type == M4__CHAIN_STR
- && src_chain->u.u_s.level <= SIZE_MAX);
+ assert (isp->funcs == &composite_funcs && obs && m4__quote_age (M4SYNTAX));
isp->u.u_c.chain = src_chain->next;
/* Speed consideration - for short enough symbols, the speed and
memory overhead of parsing another INPUT_CHAIN link outweighs the
time to inline the symbol text. */
- if (src_chain->u.u_s.len <= INPUT_INLINE_THRESHOLD)
+ if (src_chain->type == M4__CHAIN_STR
+ && src_chain->u.u_s.len <= INPUT_INLINE_THRESHOLD)
{
+ assert (src_chain->u.u_s.level <= SIZE_MAX);
obstack_grow (obs, src_chain->u.u_s.str, src_chain->u.u_s.len);
m4__adjust_refcount (context, src_chain->u.u_s.level, false);
+ return;
+ }
+
+ /* TODO preserve $@ through quotes. */
+ if (src_chain->type == M4__CHAIN_ARGV)
+ {
+ m4_arg_print (obs, src_chain->u.u_a.argv, src_chain->u.u_a.index,
+ src_chain->u.u_a.quotes, NULL, false);
+ m4__arg_adjust_refcount (context, src_chain->u.u_a.argv, false);
+ return;
}
if (value->type == M4_SYMBOL_VOID)
@@ -1103,6 +1121,65 @@ append_quote_token (m4 *context, m4_obstack *obs,
m4_symbol_value *value)
chain->next = NULL;
}
+/* When an ARGV token is seen, convert VALUE to point to it via a
+ composite chain. Use OBS for any additional allocations
+ needed. */
+static void
+init_argv_symbol (m4 *context, m4_obstack *obs, m4_symbol_value *value)
+{
+ m4__symbol_chain *src_chain;
+ m4__symbol_chain *chain;
+ int ch = next_char (context, true, true);
+ const m4_string_pair *comments = m4_get_syntax_comments (M4SYNTAX);
+
+ assert (ch == CHAR_QUOTE && value->type == M4_SYMBOL_VOID
+ && isp->funcs == &composite_funcs
+ && isp->u.u_c.chain->type == M4__CHAIN_ARGV
+ && obs && obstack_object_size (obs) == 0);
+
+ src_chain = isp->u.u_c.chain;
+ isp->u.u_c.chain = src_chain->next;
+ value->type = M4_SYMBOL_COMP;
+ /* Clone the link, since the input will be discarded soon. */
+ chain = (m4__symbol_chain *) obstack_copy (obs, src_chain, sizeof *chain);
+ value->u.u_c.chain = value->u.u_c.end = chain;
+ chain->next = NULL;
+
+ /* If the next character is not ',' or ')', then unlink the last
+ argument from argv and schedule it for reparsing. This way,
+ expand_argument never has to deal with concatenation of argv with
+ arbitrary text. Note that the implementation of safe_quotes
+ ensures peek_input won't return CHAR_ARGV if the user is perverse
+ enough to mix comment delimiters with argument separators:
+
+ define(n,`$#')define(echo,$*)changecom(`,,',`)')n(echo(a,`,b`)'',c))
+ => 2 (not 3)
+
+ Therefore, we do not have to worry about calling MATCH, and thus
+ do not have to worry about pop_input being called and
+ invalidating the argv reference.
+
+ When the $@ ref is used unchanged, we completely bypass the
+ decrement of the argv refcount in next_char, since the ref is
+ still live via the current collect_arguments. However, when the
+ last element of the $@ ref is reparsed, we must increase the argv
+ refcount here, to compensate for the fact that it will be
+ decreased once the final element is parsed. */
+ assert (!comments->len1
+ || (!m4_has_syntax (M4SYNTAX, *comments->str1,
+ M4_SYNTAX_COMMA | M4_SYNTAX_CLOSE)
+ && *comments->str1 != *src_chain->u.u_a.quotes->str1));
+ ch = peek_char (context, false);
+ if (!m4_has_syntax (M4SYNTAX, ch, M4_SYNTAX_COMMA | M4_SYNTAX_CLOSE))
+ {
+ isp->u.u_c.chain = src_chain;
+ src_chain->u.u_a.index = m4_arg_argc (chain->u.u_a.argv) - 1;
+ src_chain->u.u_a.comma = true;
+ chain->u.u_a.skip_last = true;
+ m4__arg_adjust_refcount (context, chain->u.u_a.argv, true);
+ }
+}
+
/* Low level input is done a character at a time. The function
next_char () is used to read and advance the input to the next
@@ -1146,9 +1223,10 @@ next_char (m4 *context, bool allow_quote, bool retry)
/* The function peek_char () is used to look at the next character in
the input stream. At any given time, it reads from the input_block
- on the top of the current input stack. */
+ on the top of the current input stack. If ALLOW_ARGV, then return
+ CHAR_ARGV if an entire $@ reference is available for use. */
static int
-peek_char (m4 *context)
+peek_char (m4 *context, bool allow_argv)
{
int ch;
m4_input_block *block = isp;
@@ -1159,7 +1237,8 @@ peek_char (m4 *context)
return CHAR_EOF;
assert (block->funcs->peek_func);
- if ((ch = block->funcs->peek_func (block, context)) != CHAR_RETRY)
+ ch = block->funcs->peek_func (block, context, allow_argv);
+ if (ch != CHAR_RETRY)
{
/* if (IS_IGNORE (ch)) */
/* return next_char (context, false, true); */
@@ -1228,7 +1307,7 @@ match_input (m4 *context, const char *s, bool consume)
m4_obstack *st;
bool result = false;
- ch = peek_char (context);
+ ch = peek_char (context, false);
if (ch != to_uchar (*s))
return false; /* fail */
@@ -1240,7 +1319,7 @@ match_input (m4 *context, const char *s, bool consume)
}
next_char (context, false, true);
- for (n = 1, t = s++; (ch = peek_char (context)) == to_uchar (*s++); )
+ for (n = 1, t = s++; (ch = peek_char (context, false)) == to_uchar (*s++); )
{
next_char (context, false, true);
n++;
@@ -1297,7 +1376,7 @@ consume_syntax (m4 *context, m4_obstack *obs, unsigned
int syntax)
}
if (ch == CHAR_RETRY || ch == CHAR_QUOTE)
{
- ch = peek_char (context);
+ ch = peek_char (context, false);
if (m4_has_syntax (M4SYNTAX, ch, syntax))
{
assert (ch < CHAR_EOF);
@@ -1355,8 +1434,10 @@ m4_input_exit (void)
with a description of what TOKEN will contain. If LINE is not
NULL, set *LINE to the line number where the token starts. If OBS,
expand safe tokens (strings and comments) directly into OBS rather
- than in a temporary staging area. Report errors (unterminated
- comments or strings) on behalf of CALLER, if non-NULL.
+ than in a temporary staging area. If ALLOW_ARGV, OBS must be
+ non-NULL, and an entire series of arguments can be returned if a $@
+ reference is encountered. Report errors (unterminated comments or
+ strings) on behalf of CALLER, if non-NULL.
If OBS is NULL or the token expansion is unknown, the token text is
collected on the obstack token_stack, which never contains more
@@ -1365,7 +1446,7 @@ m4_input_exit (void)
m4__next_token () is called. */
m4__token_type
m4__next_token (m4 *context, m4_symbol_value *token, int *line,
- m4_obstack *obs, const char *caller)
+ m4_obstack *obs, bool allow_argv, const char *caller)
{
int ch;
int quote_level;
@@ -1388,7 +1469,7 @@ m4__next_token (m4 *context, m4_symbol_value *token, int
*line,
/* Must consume an input character, but not until CHAR_BUILTIN is
handled. */
- ch = peek_char (context);
+ ch = peek_char (context, allow_argv && m4__quote_age (M4SYNTAX));
if (ch == CHAR_EOF) /* EOF */
{
#ifdef DEBUG_INPUT
@@ -1407,6 +1488,14 @@ m4__next_token (m4 *context, m4_symbol_value *token, int
*line,
#endif
return M4_TOKEN_MACDEF;
}
+ if (ch == CHAR_ARGV)
+ {
+ init_argv_symbol (context, obs, token);
+#ifdef DEBUG_INPUT
+ m4_print_token ("next_token", M4_TOKEN_ARGV, token);
+#endif
+ return M4_TOKEN_ARGV;
+ }
/* Consume character we already peeked at. */
next_char (context, false, true);
@@ -1644,7 +1733,7 @@ m4__next_token (m4 *context, m4_symbol_value *token, int
*line,
bool
m4__next_token_is_open (m4 *context)
{
- int ch = peek_char (context);
+ int ch = peek_char (context, false);
if (ch == CHAR_EOF || ch == CHAR_BUILTIN
|| m4_has_syntax (M4SYNTAX, ch, (M4_SYNTAX_BCOMM | M4_SYNTAX_ESCAPE
@@ -1667,55 +1756,61 @@ m4_print_token (const char *s, m4__token_type type,
m4_symbol_value *token)
m4_obstack obs;
size_t len;
- obstack_init (&obs);
if (!s)
s = "m4input";
- obstack_grow (&obs, s, strlen (s));
- obstack_1grow (&obs, ':');
- obstack_1grow (&obs, ' ');
+ xfprintf (stderr, "%s: ", s);
switch (type)
{ /* TOKSW */
case M4_TOKEN_EOF:
- obstack_grow (&obs, "eof", strlen ("eof"));
+ fputs ("eof", stderr);
token = NULL;
break;
case M4_TOKEN_NONE:
- obstack_grow (&obs, "none", strlen ("none"));
+ fputs ("none", stderr);
token = NULL;
break;
case M4_TOKEN_STRING:
- obstack_grow (&obs, "string\t", strlen ("string\t"));
+ fputs ("string\t", stderr);
break;
case M4_TOKEN_SPACE:
- obstack_grow (&obs, "space\t", strlen ("space\t"));
+ fputs ("space\t", stderr);
break;
case M4_TOKEN_WORD:
- obstack_grow (&obs, "word\t", strlen ("word\t"));
+ fputs ("word\t", stderr);
break;
case M4_TOKEN_OPEN:
- obstack_grow (&obs, "open\t", strlen ("open\t"));
+ fputs ("open\t", stderr);
break;
case M4_TOKEN_COMMA:
- obstack_grow (&obs, "comma\t", strlen ("comma\t"));
+ fputs ("comma\t", stderr);
break;
case M4_TOKEN_CLOSE:
- obstack_grow (&obs, "close\t", strlen ("close\t"));
+ fputs ("close\t", stderr);
break;
case M4_TOKEN_SIMPLE:
- obstack_grow (&obs, "simple\t", strlen ("simple\t"));
+ fputs ("simple\t", stderr);
break;
case M4_TOKEN_MACDEF:
- obstack_grow (&obs, "builtin\t", strlen ("builtin\t"));
+ fputs ("builtin\t", stderr);
+ break;
+ case M4_TOKEN_ARGV:
+ fputs ("argv\t", stderr);
break;
default:
abort ();
}
if (token)
- m4_symbol_value_print (token, &obs, true, "\"", "\"", SIZE_MAX, NULL);
- obstack_1grow (&obs, '\n');
- len = obstack_object_size (&obs);
- fwrite (obstack_finish (&obs), 1, len, stderr);
- obstack_free (&obs, NULL);
+ {
+ obstack_init (&obs);
+ m4_symbol_value_print (token, &obs, NULL, NULL, true);
+ len = obstack_object_size (&obs);
+ xfprintf (stderr, "%s\n", quotearg_style_mem (c_maybe_quoting_style,
+ obstack_finish (&obs),
+ len));
+ obstack_free (&obs, NULL);
+ }
+ else
+ fputc ('\n', stderr);
return 0;
}
#endif /* DEBUG_INPUT */
diff --git a/m4/m4private.h b/m4/m4private.h
index 77590f3..a2b78b8 100644
--- a/m4/m4private.h
+++ b/m4/m4private.h
@@ -221,6 +221,7 @@ struct m4__symbol_chain
size_t index; /* Argument index within argv. */
bool_bitfield flatten : 1; /* True to treat builtins as text. */
bool_bitfield comma : 1; /* True when `,' is next input. */
+ bool_bitfield skip_last : 1; /* True if last argument omitted. */
const m4_string_pair *quotes; /* NULL for $*, quotes for
address@hidden */
} u_a; /* M4__CHAIN_ARGV. */
} u;
@@ -397,7 +398,8 @@ extern void m4__symtab_remove_module_references
(m4_symbol_table*,
#define CHAR_EOF 256 /* Character return on EOF. */
#define CHAR_BUILTIN 257 /* Character return for BUILTIN token. */
#define CHAR_QUOTE 258 /* Character return for quoted string. */
-#define CHAR_RETRY 259 /* Character return for end of input block. */
+#define CHAR_ARGV 259 /* Character return for $@ reference. */
+#define CHAR_RETRY 260 /* Character return for end of input block. */
#define DEF_LQUOTE "`" /* Default left quote delimiter. */
#define DEF_RQUOTE "\'" /* Default right quote delimiter. */
@@ -475,7 +477,8 @@ typedef enum {
M4_TOKEN_COMMA, /* Argument separator, M4_SYMBOL_TEXT. */
M4_TOKEN_CLOSE, /* Argument list end, M4_SYMBOL_TEXT. */
M4_TOKEN_SIMPLE, /* Single character, M4_SYMBOL_TEXT. */
- M4_TOKEN_MACDEF /* Macro's definition (see "defn"), M4_SYMBOL_FUNC. */
+ M4_TOKEN_MACDEF, /* Macro's definition (see "defn"), M4_SYMBOL_FUNC. */
+ M4_TOKEN_ARGV /* A series of parameters, M4_SYMBOL_COMP. */
} m4__token_type;
extern void m4__make_text_link (m4_obstack *, m4__symbol_chain **,
@@ -483,7 +486,7 @@ extern void m4__make_text_link (m4_obstack
*, m4__symbol_chain **,
extern bool m4__push_symbol (m4 *, m4_symbol_value *, size_t,
bool);
extern m4__token_type m4__next_token (m4 *, m4_symbol_value *, int *,
- m4_obstack *, const char *);
+ m4_obstack *, bool, const char *);
extern bool m4__next_token_is_open (m4 *);
/* Fast macro versions of macro argv accessor functions,
diff --git a/m4/macro.c b/m4/macro.c
index 708be58..d6f81d8 100644
--- a/m4/macro.c
+++ b/m4/macro.c
@@ -183,7 +183,7 @@ m4_macro_expand_input (m4 *context)
m4_set_symbol_value_text (&empty_symbol, "", 0, 0);
VALUE_MAX_ARGS (&empty_symbol) = -1;
- while ((type = m4__next_token (context, &token, &line, NULL, NULL))
+ while ((type = m4__next_token (context, &token, &line, NULL, false, NULL))
!= M4_TOKEN_EOF)
expand_token (context, NULL, type, &token, line, true);
}
@@ -311,7 +311,7 @@ expand_argument (m4 *context, m4_obstack *obs,
m4_symbol_value *argp,
/* Skip leading white space. */
do
{
- type = m4__next_token (context, &token, NULL, obs, caller);
+ type = m4__next_token (context, &token, NULL, obs, true, caller);
}
while (type == M4_TOKEN_SPACE);
@@ -389,6 +389,20 @@ expand_argument (m4 *context, m4_obstack *obs,
m4_symbol_value *argp,
argp->type = M4_SYMBOL_TEXT;
break;
+ case M4_TOKEN_ARGV:
+ assert (paren_level == 0 && argp->type == M4_SYMBOL_VOID
+ && obstack_object_size (obs) == 0
+ && token.u.u_c.chain == token.u.u_c.end
+ && token.u.u_c.chain->type == M4__CHAIN_ARGV);
+ argp->type = M4_SYMBOL_COMP;
+ argp->u.u_c.chain = argp->u.u_c.end = token.u.u_c.chain;
+ type = m4__next_token (context, &token, NULL, NULL, false, caller);
+ if (argp->u.u_c.chain->u.u_a.skip_last)
+ assert (type == M4_TOKEN_COMMA);
+ else
+ assert (type == M4_TOKEN_COMMA || type == M4_TOKEN_CLOSE);
+ return type == M4_TOKEN_COMMA;
+
default:
assert (!"expand_argument");
abort ();
@@ -396,7 +410,7 @@ expand_argument (m4 *context, m4_obstack *obs,
m4_symbol_value *argp,
if (argp->type != M4_SYMBOL_VOID || obstack_object_size (obs))
first = false;
- type = m4__next_token (context, &token, NULL, obs, caller);
+ type = m4__next_token (context, &token, NULL, obs, first, caller);
}
}
@@ -583,7 +597,7 @@ collect_arguments (m4 *context, const char *name, size_t
len,
if (m4__next_token_is_open (context))
{
/* Gobble parenthesis, then collect arguments. */
- m4__next_token (context, &token, NULL, NULL, name);
+ m4__next_token (context, &token, NULL, NULL, false, name);
do
{
tokenp = (m4_symbol_value *) obstack_alloc (arguments,
@@ -608,12 +622,22 @@ collect_arguments (m4 *context, const char *name, size_t
len,
&& m4_get_symbol_value_quote_age (tokenp) != args.quote_age)
args.quote_age = 0;
else if (tokenp->type == M4_SYMBOL_COMP)
- args.has_ref = true;
+ {
+ args.has_ref = true;
+ if (tokenp->u.u_c.chain->type == M4__CHAIN_ARGV)
+ {
+ args.argc += (tokenp->u.u_c.chain->u.u_a.argv->argc
+ - tokenp->u.u_c.chain->u.u_a.index
+ - tokenp->u.u_c.chain->u.u_a.skip_last - 1);
+ args.wrapper = true;
+ }
+ }
}
while (more_args);
}
argv = (m4_macro_args *) obstack_finish (argv_stack);
argv->argc = args.argc;
+ argv->wrapper = args.wrapper;
argv->has_ref = args.has_ref;
if (args.quote_age != m4__quote_age (M4SYNTAX))
argv->quote_age = 0;
@@ -981,9 +1005,22 @@ m4__arg_adjust_refcount (m4 *context, m4_macro_args
*argv, bool increase)
chain = argv->array[i]->u.u_c.chain;
while (chain)
{
- assert (chain->type == M4__CHAIN_STR);
- if (chain->u.u_s.level < SIZE_MAX)
- m4__adjust_refcount (context, chain->u.u_s.level, increase);
+ switch (chain->type)
+ {
+ case M4__CHAIN_STR:
+ if (chain->u.u_s.level < SIZE_MAX)
+ m4__adjust_refcount (context, chain->u.u_s.level,
+ increase);
+ break;
+ case M4__CHAIN_ARGV:
+ assert (chain->u.u_a.argv->inuse);
+ m4__arg_adjust_refcount (context, chain->u.u_a.argv,
+ increase);
+ break;
+ default:
+ assert (!"m4__arg_adjust_refcount");
+ abort ();
+ }
chain = chain->next;
}
}
@@ -996,15 +1033,25 @@ m4__arg_adjust_refcount (m4 *context, m4_macro_args
*argv, bool increase)
static void
arg_mark (m4_macro_args *argv)
{
+ size_t i;
+ m4__symbol_chain *chain;
+
+ if (argv->inuse)
+ return;
argv->inuse = true;
if (argv->wrapper)
{
- /* TODO for now we support only a single-length $@ chain. */
- assert (argv->arraylen == 1
- && argv->array[0]->type == M4_SYMBOL_COMP
- && !argv->array[0]->u.u_c.chain->next
- && argv->array[0]->u.u_c.chain->type == M4__CHAIN_ARGV);
- argv->array[0]->u.u_c.chain->u.u_a.argv->inuse = true;
+ for (i = 0; i < argv->arraylen; i++)
+ if (argv->array[i]->type == M4_SYMBOL_COMP)
+ {
+ chain = argv->array[i]->u.u_c.chain;
+ while (chain)
+ {
+ if (chain->type == M4__CHAIN_ARGV && !chain->u.u_a.argv->inuse)
+ arg_mark (chain->u.u_a.argv);
+ chain = chain->next;
+ }
+ }
}
}
@@ -1022,12 +1069,13 @@ make_argv_ref (m4_symbol_value *value, m4_obstack *obs,
size_t level,
m4__symbol_chain *chain;
assert (obstack_object_size (obs) == 0);
- if (argv->wrapper)
+ if (argv->wrapper && argv->arraylen == 1)
{
- /* TODO support concatenation with $@ refs. */
- assert (argv->arraylen == 1 && argv->array[0]->type == M4_SYMBOL_COMP);
+ /* TODO support $@ ref alongside other arguments. */
+ assert (argv->array[0]->type == M4_SYMBOL_COMP);
chain= argv->array[0]->u.u_c.chain;
- assert (!chain->next && chain->type == M4__CHAIN_ARGV);
+ assert (!chain->next && chain->type == M4__CHAIN_ARGV
+ && !chain->u.u_a.skip_last);
argv = chain->u.u_a.argv;
index += chain->u.u_a.index - 1;
}
@@ -1044,6 +1092,7 @@ make_argv_ref (m4_symbol_value *value, m4_obstack *obs,
size_t level,
chain->u.u_a.index = index;
chain->u.u_a.flatten = flatten;
chain->u.u_a.comma = false;
+ chain->u.u_a.skip_last = false;
if (quotes)
{
/* Clone the quotes into the obstack, since changequote can
@@ -1081,12 +1130,14 @@ arg_symbol (m4_macro_args *argv, size_t index, size_t
*level)
for (i = 0; i < argv->arraylen; i++)
{
value = argv->array[i];
- if (value->type == M4_SYMBOL_COMP)
+ if (value->type == M4_SYMBOL_COMP
+ && value->u.u_c.chain->type == M4__CHAIN_ARGV)
{
m4__symbol_chain *chain = value->u.u_c.chain;
/* TODO - for now we support only a single $@ chain. */
- assert (!chain->next && chain->type == M4__CHAIN_ARGV);
- if (index < chain->u.u_a.argv->argc - (chain->u.u_a.index - 1))
+ assert (!chain->next);
+ if (index <= (chain->u.u_a.argv->argc - chain->u.u_a.index
+ - chain->u.u_a.skip_last))
{
value = arg_symbol (chain->u.u_a.argv,
chain->u.u_a.index - 1 + index, level);
@@ -1094,7 +1145,8 @@ arg_symbol (m4_macro_args *argv, size_t index, size_t
*level)
value = &empty_symbol;
break;
}
- index -= chain->u.u_a.argv->argc - chain->u.u_a.index;
+ index -= (chain->u.u_a.argv->argc - chain->u.u_a.index
+ - chain->u.u_a.skip_last);
}
else if (--index == 0)
break;
@@ -1154,15 +1206,25 @@ m4_arg_text (m4 *context, m4_macro_args *argv, size_t
index)
value = m4_arg_symbol (argv, index);
if (m4_is_symbol_value_text (value))
return m4_get_symbol_value_text (value);
- /* TODO - concatenate argv refs and functions? For now, we assume
- all chain elements are text. */
+ /* TODO - concatenate functions. */
assert (value->type == M4_SYMBOL_COMP);
chain = value->u.u_c.chain;
obs = m4_arg_scratch (context);
while (chain)
{
- assert (chain->type == M4__CHAIN_STR);
- obstack_grow (obs, chain->u.u_s.str, chain->u.u_s.len);
+ switch (chain->type)
+ {
+ case M4__CHAIN_STR:
+ obstack_grow (obs, chain->u.u_s.str, chain->u.u_s.len);
+ break;
+ case M4__CHAIN_ARGV:
+ m4_arg_print (obs, chain->u.u_a.argv, chain->u.u_a.index,
+ chain->u.u_a.quotes, NULL, false);
+ break;
+ default:
+ assert (!"m4_arg_text");
+ abort ();
+ }
chain = chain->next;
}
obstack_1grow (obs, '\0');
diff --git a/m4/symtab.c b/m4/symtab.c
index f302fe8..9636f9d 100644
--- a/m4/symtab.c
+++ b/m4/symtab.c
@@ -845,7 +845,7 @@ dump_symbol_CB (m4_symbol_table *symtab, const char *name,
{
m4_obstack obs;
obstack_init (&obs);
- m4_symbol_value_print (value, &obs, false, NULL, NULL, SIZE_MAX, true);
+ m4_symbol_value_print (value, &obs, NULL, NULL, true);
xfprintf (stderr, "%s", (char *) obstack_finish (&obs));
obstack_free (&obs, NULL);
}
diff --git a/m4/syntax.c b/m4/syntax.c
index aff6444..8a7b0d1 100644
--- a/m4/syntax.c
+++ b/m4/syntax.c
@@ -743,9 +743,11 @@ set_quote_age (m4_syntax_table *syntax, bool reset, bool
change)
| M4_SYNTAX_COMMA | M4_SYNTAX_CLOSE
| M4_SYNTAX_SPACE))
&& *syntax->quote.str1 != *syntax->quote.str2
- && *syntax->comm.str1 != *syntax->quote.str2
- && !m4_has_syntax (syntax, *syntax->comm.str1,
- M4_SYNTAX_OPEN | M4_SYNTAX_COMMA | M4_SYNTAX_CLOSE)
+ && (!syntax->comm.len1
+ || (*syntax->comm.str1 != *syntax->quote.str2
+ && !m4_has_syntax (syntax, *syntax->comm.str1,
+ (M4_SYNTAX_OPEN | M4_SYNTAX_COMMA
+ | M4_SYNTAX_CLOSE))))
&& m4_has_syntax (syntax, ',', M4_SYNTAX_COMMA))
{
syntax->quote_age = ((local_syntax_age << 16)
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