X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/beda758b1f805686378e7cba5b70216bb7278080..0ced3098fd97e1483b4ac938bdce99bfc7942539:/src/muscle_tab.c diff --git a/src/muscle_tab.c b/src/muscle_tab.c index 380a0471..84c707aa 100644 --- a/src/muscle_tab.c +++ b/src/muscle_tab.c @@ -1,4 +1,5 @@ -/* Macro table manager for Bison, +/* Muscle table manager for Bison. + Copyright (C) 2001, 2002 Free Software Foundation, Inc. This file is part of Bison, the GNU Compiler Compiler. @@ -19,11 +20,23 @@ Boston, MA 02111-1307, USA. */ #include "system.h" -#include "hash.h" + +#include +#include + #include "files.h" #include "muscle_tab.h" #include "getargs.h" +typedef struct +{ + const char *key; + char *value; +} muscle_entry; + +/* An obstack used to create some entries. */ +struct obstack muscle_obstack; + /* Initial capacity of muscles hash table. */ #define HT_INITIAL_CAPACITY 257 @@ -32,63 +45,195 @@ struct hash_table *muscle_table = NULL; static bool hash_compare_muscles (void const *x, void const *y) { - const muscle_entry_t *m1 = x; - const muscle_entry_t *m2 = y; - return strcmp (m1->key, m2->key) ? FALSE : TRUE; + muscle_entry const *m1 = x; + muscle_entry const *m2 = y; + return strcmp (m1->key, m2->key) == 0; } static unsigned int hash_muscle (const void *x, unsigned int tablesize) { - const muscle_entry_t *m = x; + muscle_entry const *m = x; return hash_string (m->key, tablesize); } +/*-----------------------------------------------------------------. +| Create the MUSCLE_TABLE, and initialize it with default values. | +| Also set up the MUSCLE_OBSTACK. | +`-----------------------------------------------------------------*/ + void muscle_init (void) { + /* Initialize the muscle obstack. */ + obstack_init (&muscle_obstack); + muscle_table = hash_initialize (HT_INITIAL_CAPACITY, NULL, hash_muscle, - hash_compare_muscles, NULL); + hash_compare_muscles, free); /* Version and input file. */ - muscle_insert ("version", VERSION); - muscle_insert ("filename", infile); - - /* Types. */ - muscle_insert ("stype", "int"); - muscle_insert ("ltype", "yyltype"); + MUSCLE_INSERT_STRING ("version", VERSION); + MUSCLE_INSERT_C_STRING ("filename", grammar_file); +} - /* Default #line formatting. */ - muscle_insert ("linef", "#line %d %s\n"); - /* Stack parameters. */ - muscle_insert ("maxdepth", "10000"); - muscle_insert ("initdepth", "200"); +/*------------------------------------------------------------. +| Free all the memory consumed by the muscle machinery only. | +`------------------------------------------------------------*/ - /* C++ macros. */ - muscle_insert ("name", "Parser"); +void +muscle_free (void) +{ + hash_free (muscle_table); + obstack_free (&muscle_obstack, NULL); } + + +/*------------------------------------------------------------. +| Insert (KEY, VALUE). If KEY already existed, overwrite the | +| previous value. | +`------------------------------------------------------------*/ + void -muscle_insert (const char *key, const char *value) +muscle_insert (const char *key, char *value) { - muscle_entry_t pair = { key, NULL }; - muscle_entry_t *entry = hash_lookup (muscle_table, &pair); + muscle_entry probe; + muscle_entry *entry = NULL; + + probe.key = key; + entry = hash_lookup (muscle_table, &probe); if (!entry) { /* First insertion in the hash. */ - entry = XMALLOC (muscle_entry_t, 1); + MALLOC (entry, 1); entry->key = key; hash_insert (muscle_table, entry); } entry->value = value; } -const char* + +/*-------------------------------------------------------------------. +| Insert (KEY, VALUE). If KEY already existed, overwrite the | +| previous value. Uses MUSCLE_OBSTACK. De-allocates the previously | +| associated value. VALUE and SEPARATOR are copied. | +`-------------------------------------------------------------------*/ + +void +muscle_grow (const char *key, const char *val, const char *separator) +{ + muscle_entry probe; + muscle_entry *entry = NULL; + + probe.key = key; + entry = hash_lookup (muscle_table, &probe); + + if (!entry) + { + /* First insertion in the hash. */ + MALLOC (entry, 1); + entry->key = key; + hash_insert (muscle_table, entry); + entry->value = xstrdup (val); + } + else + { + /* Grow the current value. */ + char *new_val; + obstack_sgrow (&muscle_obstack, entry->value); + free (entry->value); + obstack_sgrow (&muscle_obstack, separator); + obstack_sgrow (&muscle_obstack, val); + obstack_1grow (&muscle_obstack, 0); + new_val = obstack_finish (&muscle_obstack); + entry->value = xstrdup (new_val); + obstack_free (&muscle_obstack, new_val); + } +} + + +/*------------------------------------------------------------------. +| Append VALUE to the current value of KEY, using muscle_grow. But | +| in addition, issue a synchronization line for the location LOC. | +`------------------------------------------------------------------*/ + +void +muscle_code_grow (const char *key, const char *val, location loc) +{ + char *extension = NULL; + obstack_fgrow1 (&muscle_obstack, "]b4_syncline([[%d]], [[", loc.start.line); + MUSCLE_OBSTACK_SGROW (&muscle_obstack, + quotearg_style (c_quoting_style, loc.start.file)); + obstack_sgrow (&muscle_obstack, "]])[\n"); + obstack_sgrow (&muscle_obstack, val); + obstack_1grow (&muscle_obstack, 0); + extension = obstack_finish (&muscle_obstack); + muscle_grow (key, extension, ""); +} + + +/*-------------------------------------------------------------------. +| MUSCLE is an M4 list of pairs. Create or extend it with the pair | +| (A1, A2). Note that because the muscle values are output *double* | +| quoted, one needs to strip the first level of quotes to reach the | +| list itself. | +`-------------------------------------------------------------------*/ + +void muscle_pair_list_grow (const char *muscle, + const char *a1, const char *a2) +{ + char *pair; + obstack_fgrow2 (&muscle_obstack, "[[[%s]], [[%s]]]", a1, a2); + obstack_1grow (&muscle_obstack, 0); + pair = obstack_finish (&muscle_obstack); + muscle_grow (muscle, pair, ",\n"); + obstack_free (&muscle_obstack, pair); +} + +/*-------------------------------. +| Find the value of muscle KEY. | +`-------------------------------*/ + +char* muscle_find (const char *key) { - muscle_entry_t pair = { key, NULL }; - muscle_entry_t *result = hash_lookup (muscle_table, &pair); + muscle_entry probe; + muscle_entry *result = NULL; + + probe.key = key; + result = hash_lookup (muscle_table, &probe); return result ? result->value : NULL; } + + +/*------------------------------------------------. +| Output the definition of ENTRY as a m4_define. | +`------------------------------------------------*/ + +static inline bool +muscle_m4_output (muscle_entry *entry, FILE *out) +{ + fprintf (out, "m4_define([b4_%s],\n", entry->key); + fprintf (out, "[[%s]])\n\n\n", entry->value); + return true; +} + +static bool +muscle_m4_output_processor (void *entry, void *out) +{ + return muscle_m4_output (entry, out); +} + + +/*----------------------------------------------------------------. +| Output the definition of all the current muscles into a list of | +| m4_defines. | +`----------------------------------------------------------------*/ + +void +muscles_m4_output (FILE *out) +{ + hash_do_for_each (muscle_table, muscle_m4_output_processor, out); +}