cpplib.h (_dollar_ok): New macro.
* cpplib.h (_dollar_ok): New macro. (is_idchar, is_idstart): Use it. (IStable): Rename to _cpp_IStable. Declare it const if gcc >=2.7 or C99. Delete all references to FAKE_CONST. (is_idchar, is_idstart, is_numchar, is_numstart, is_hspace, is_space): Update for renamed IStable. * cppinit.c: Delete all references to FAKE_CONST and CAT macros. Define init_IStable as empty macro if gcc >=2.7 or C99. Change TABLE() to ISTABLE and hardcode name of table. (cpp_start_read): Don't change the IStable based on dollars_in_ident. * cpphash.c (unsafe_chars): Add pfile argument. All callers changed. Handle '$' for char1 correctly. * cpplib.c (cpp_get_token): Use is_numchar when parsing numbers. * cppexp.c (tokentab2): Make const. (cpp_lex): Make toktab const. * cppinit.c (include_defaults_array): Make const. (initialize_standard_includes): Make default_include const. From-SVN: r32321
This commit is contained in:
Zack Weinberg
Zack Weinberg
parent
fcd7f76b28
commit
455d25861f
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@ -1,3 +1,27 @@
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2000-03-03 Zack Weinberg <zack@wolery.cumb.org>
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* cpplib.h (_dollar_ok): New macro.
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(is_idchar, is_idstart): Use it.
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(IStable): Rename to _cpp_IStable. Declare it const if
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gcc >=2.7 or C99. Delete all references to FAKE_CONST.
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(is_idchar, is_idstart, is_numchar, is_numstart, is_hspace,
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is_space): Update for renamed IStable.
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* cppinit.c: Delete all references to FAKE_CONST and CAT
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macros. Define init_IStable as empty macro if gcc >=2.7 or
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C99. Change TABLE() to ISTABLE and hardcode name of table.
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(cpp_start_read): Don't change the IStable based on
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dollars_in_ident.
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* cpphash.c (unsafe_chars): Add pfile argument. All callers
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changed. Handle '$' for char1 correctly.
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* cpplib.c (cpp_get_token): Use is_numchar when parsing numbers.
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* cppexp.c (tokentab2): Make const.
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(cpp_lex): Make toktab const.
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* cppinit.c (include_defaults_array): Make const.
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(initialize_standard_includes): Make default_include const.
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2000-03-03 Jason Merrill <jason@casey.cygnus.com>
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* dwarf2out.c (dwarf2out_frame_debug): Add cast to silence warning.
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@ -403,7 +403,7 @@ struct token {
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int token;
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};
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static struct token tokentab2[] = {
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static const struct token tokentab2[] = {
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{"&&", ANDAND},
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{"||", OROR},
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{"<<", LSH},
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@ -424,7 +424,7 @@ cpp_lex (pfile, skip_evaluation)
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cpp_reader *pfile;
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int skip_evaluation;
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{
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struct token *toktab;
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const struct token *toktab;
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enum cpp_token token;
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struct operation op;
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U_CHAR *tok_start, *tok_end;
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@ -35,7 +35,7 @@ static int comp_def_part PARAMS ((int, U_CHAR *, int, U_CHAR *,
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int, int));
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static void push_macro_expansion PARAMS ((cpp_reader *,
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U_CHAR *, int, HASHNODE *));
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static int unsafe_chars PARAMS ((int, int));
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static int unsafe_chars PARAMS ((cpp_reader *, int, int));
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static int macro_cleanup PARAMS ((cpp_buffer *, cpp_reader *));
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static enum cpp_token macarg PARAMS ((cpp_reader *, int));
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static struct tm *timestamp PARAMS ((cpp_reader *));
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@ -1317,7 +1317,7 @@ macroexpand (pfile, hp)
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U_CHAR *expanded = ARG_BASE + arg->expanded;
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if (!ap->raw_before && totlen > 0 && arg->expand_length
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&& !CPP_TRADITIONAL (pfile)
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&& unsafe_chars (xbuf[totlen - 1], expanded[0]))
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&& unsafe_chars (pfile, xbuf[totlen - 1], expanded[0]))
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{
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xbuf[totlen++] = '\r';
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xbuf[totlen++] = ' ';
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@ -1328,7 +1328,7 @@ macroexpand (pfile, hp)
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if (!ap->raw_after && totlen > 0 && offset < defn->length
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&& !CPP_TRADITIONAL (pfile)
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&& unsafe_chars (xbuf[totlen - 1], exp[offset]))
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&& unsafe_chars (pfile, xbuf[totlen - 1], exp[offset]))
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{
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xbuf[totlen++] = '\r';
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xbuf[totlen++] = ' ';
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@ -1382,7 +1382,8 @@ macroexpand (pfile, hp)
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could cause mis-tokenization. */
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static int
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unsafe_chars (c1, c2)
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unsafe_chars (pfile, c1, c2)
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cpp_reader *pfile;
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int c1, c2;
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{
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switch (c1)
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@ -1397,6 +1398,11 @@ unsafe_chars (c1, c2)
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return 1; /* could extend a pre-processing number */
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goto letter;
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case '$':
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if (CPP_OPTIONS (pfile)->dollars_in_ident)
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goto letter;
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return 0;
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case 'L':
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if (c2 == '\'' || c2 == '\"')
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return 1; /* Could turn into L"xxx" or L'xxx'. */
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@ -1468,7 +1474,7 @@ push_macro_expansion (pfile, xbuf, xbuf_len, hp)
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{
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int c1 = mbuf->rlimit[-3];
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int c2 = CPP_BUF_PEEK (CPP_PREV_BUFFER (CPP_BUFFER (pfile)));
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if (c2 == EOF || !unsafe_chars (c1, c2))
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if (c2 == EOF || !unsafe_chars (pfile, c1, c2))
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mbuf->rlimit -= 2;
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}
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}
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@ -22,7 +22,6 @@ Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "config.h"
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#include "system.h"
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#define FAKE_CONST
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#include "cpplib.h"
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#include "cpphash.h"
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#include "output.h"
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@ -103,7 +102,7 @@ static const char * const known_suffixes[] =
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All these directories are treated as `system' include directories
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(they are not subject to pedantic warnings in some cases). */
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static struct default_include
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struct default_include
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{
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const char *fname; /* The name of the directory. */
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const char *component; /* The component containing the directory
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@ -112,8 +111,9 @@ static struct default_include
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int cxx_aware; /* Includes in this directory don't need to
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be wrapped in extern "C" when compiling
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C++. */
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}
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include_defaults_array[]
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};
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static const struct default_include include_defaults_array[]
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#ifdef INCLUDE_DEFAULTS
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= INCLUDE_DEFAULTS;
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#else
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@ -204,24 +204,21 @@ static void new_pending_define PARAMS ((struct cpp_options *,
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/* Fourth argument to append_include_chain: chain to use */
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enum { QUOTE = 0, BRACKET, SYSTEM, AFTER };
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/* If gcc is in use (stage2/stage3) we can make this table initialized data. */
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#ifdef __STDC__
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#define CAT(a, b) a##b
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#else
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#define CAT(a, b) a/**/b
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#endif
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/* If we have designated initializers (GCC >2.7, or C99) this table
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can be initialized, constant data. Otherwise, it has to be filled
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in at runtime. */
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#if (GCC_VERSION >= 2007)
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#define TABLE(id) static inline void CAT(init_, id) PARAMS ((void)) {} \
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unsigned char id[256] = {
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#define s(p, v) [p] = v,
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#if (GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L)
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#define init_IStable() /* nothing */
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#define ISTABLE const unsigned char _cpp_IStable[256] = {
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#define END };
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#define s(p, v) [p] = v,
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#else
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#define TABLE(id) unsigned char id[256] = { 0 }; \
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static void CAT(init_,id) PARAMS ((void)) { \
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unsigned char *x = id;
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#define s(p, v) x[p] = v;
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#define ISTABLE unsigned char _cpp_IStable[256] = { 0 }; \
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static void init_IStable PARAMS ((void)) { \
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unsigned char *x = id;
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#define END }
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#define s(p, v) x[p] = v;
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#endif
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#define A(x) s(x, ISidnum|ISidstart)
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@ -229,7 +226,7 @@ unsigned char *x = id;
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#define H(x) s(x, IShspace|ISspace)
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#define S(x) s(x, ISspace)
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TABLE (IStable)
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ISTABLE
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A('_')
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A('a') A('b') A('c') A('d') A('e') A('f') A('g') A('h') A('i')
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@ -251,10 +248,9 @@ END
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#undef N
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#undef H
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#undef S
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#undef TABLE
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#undef END
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#undef s
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#undef CAT
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#undef ISTABLE
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#undef END
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/* Given a colon-separated list of file names PATH,
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add all the names to the search path for include files. */
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@ -668,7 +664,7 @@ initialize_standard_includes (pfile)
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{
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cpp_options *opts = CPP_OPTIONS (pfile);
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char *path;
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struct default_include *p = include_defaults_array;
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const struct default_include *p;
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char *specd_prefix = opts->include_prefix;
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/* Several environment variables may add to the include search path.
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@ -793,14 +789,10 @@ cpp_start_read (pfile, fname)
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preprocessing. */
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if (opts->preprocessed)
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pfile->no_macro_expand++;
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/* Now that we know dollars_in_ident, we can initialize the syntax
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tables. */
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/* Set up the IStable. This doesn't do anything if we were compiled
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with a compiler that supports C99 designated initializers. */
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init_IStable ();
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/* XXX Get rid of code that depends on this, then IStable can
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be truly const. */
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if (opts->dollars_in_ident)
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IStable['$'] = ISidstart|ISidnum;
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/* Set up the include search path now. */
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if (! opts->no_standard_includes)
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@ -2615,7 +2615,7 @@ cpp_get_token (pfile)
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c = PEEKC ();
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if (c == EOF)
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break;
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if (!is_idchar(c) && c != '.'
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if (!is_numchar(c) && c != '.'
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&& ((c2 != 'e' && c2 != 'E'
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&& ((c2 != 'p' && c2 != 'P') || CPP_C89 (pfile)))
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|| (c != '+' && c != '-')))
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@ -2640,7 +2640,7 @@ cpp_get_token (pfile)
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c = GETC();
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if (c == EOF)
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goto chill_number_eof;
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if (!is_idchar(c))
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if (!is_numchar(c))
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break;
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CPP_PUTC (pfile, c);
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}
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29
gcc/cpplib.h
29
gcc/cpplib.h
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@ -612,22 +612,23 @@ enum node_type {
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#define IShspace 0x08 /* ' ' \t \f \v */
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#define ISspace 0x10 /* ' ' \t \f \v \n */
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#define is_idchar(x) (IStable[x] & ISidnum)
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#define is_numchar(x) (IStable[x] & ISidnum)
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#define is_idstart(x) (IStable[x] & ISidstart)
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#define is_numstart(x) (IStable[x] & ISnumstart)
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#define is_hspace(x) (IStable[x] & IShspace)
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#define is_space(x) (IStable[x] & ISspace)
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#define _dollar_ok(x) ((x) == '$' && CPP_OPTIONS (pfile)->dollars_in_ident)
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/* This table is not really `const', but it is only modified at
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initialization time, in a separate translation unit from the rest
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of the library. We let the rest of the library think it is `const'
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to get better code and some additional compile-time checks. */
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#ifndef FAKE_CONST
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#define FAKE_CONST const
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#define is_idchar(x) ((_cpp_IStable[x] & ISidnum) || _dollar_ok(x))
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#define is_idstart(x) ((_cpp_IStable[x] & ISidstart) || _dollar_ok(x))
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#define is_numchar(x) (_cpp_IStable[x] & ISidnum)
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#define is_numstart(x) (_cpp_IStable[x] & ISnumstart)
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#define is_hspace(x) (_cpp_IStable[x] & IShspace)
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#define is_space(x) (_cpp_IStable[x] & ISspace)
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/* This table is constant if it can be initialized at compile time,
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which is the case if cpp was compiled with GCC >=2.7, or another
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compiler that supports C99. */
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#if (GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L)
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extern const unsigned char _cpp_IStable[256];
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#else
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extern unsigned char _cpp_IStable[256];
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#endif
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extern FAKE_CONST unsigned char IStable[256];
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#undef FAKE_CONST
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/* Stack of conditionals currently in progress
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(including both successful and failing conditionals). */
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