X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fident%2Fident.c;h=47838da79d691e2a6a6c61ac42cd671928858e99;hb=f6aeac6a547a52beb3cb663c5e63c05c9c3728ea;hp=5d63240034fa2d974a3ad0f21cb76275cb2e49fa;hpb=ff55ee7c6d0b6d8c41d35fa543a502f119f56cdd;p=libfirm diff --git a/ir/ident/ident.c b/ir/ident/ident.c index 5d6324003..47838da79 100644 --- a/ir/ident/ident.c +++ b/ir/ident/ident.c @@ -1,78 +1,337 @@ /* - * Project: libFIRM - * File name: ir/common/ident.c - * Purpose: Hash table to store names. - * Author: Goetz Lindenmaier - * Modified by: - * Created: - * CVS-ID: $Id$ - * Copyright: (c) 1999-2003 Universität Karlsruhe - * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE. + * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved. + * + * This file is part of libFirm. + * + * This file may be distributed and/or modified under the terms of the + * GNU General Public License version 2 as published by the Free Software + * Foundation and appearing in the file LICENSE.GPL included in the + * packaging of this file. + * + * Licensees holding valid libFirm Professional Edition licenses may use + * this file in accordance with the libFirm Commercial License. + * Agreement provided with the Software. + * + * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE + * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE. */ +/** + * @file + * @brief Hash table to store names. + * @author Goetz Lindenmaier + * @version $Id$ + */ #ifdef HAVE_CONFIG_H -# include +# include "config.h" #endif #include #include +#include #include #include #include +#ifdef FIRM_ENABLE_WCHAR +#include +#endif + #include "ident_t.h" +#include "set.h" +#include "xmalloc.h" + +/* for debugging only, not the real implementation */ +struct _ident { + char reserved[sizeof(unsigned) + sizeof(size_t)]; + char data[1]; +}; + +/** The current ident module implementation. */ +static ident_if_t impl; + +/** + * Stores a string in the ident module and returns a handle for the string. + * + * @param handle the handle for the set + * @param str the string which shall be stored + * @param len length of str in bytes + * + * @return id - a handle for the generated ident + * + * Default implementation using libfirm sets. + */ +static ident *set_new_id_from_chars(void *handle, const char *str, int len) +{ + set *id_set = handle; + + /* GL: Who added this assert? And why? */ + //assert(len > 0); + return (ident *)set_hinsert0(id_set, str, len, ID_HASH(unsigned char, str, len)); +} + +/** + * Stores a string in the ident module and returns a handle for the string. + * + * @param handle the handle for the set + * @param str the string (or whatever) which shall be stored + * + * Default implementation using libfirm sets. + */ +static ident *set_new_id_from_str(void *handle, const char *str) +{ + assert(str); + return (ident *)set_new_id_from_chars(handle, str, strlen(str)); +} + +/** + * Returns a string represented by an ident. + * + * @param handle the handle for the set + * @param id the ident + * + * Default implementation using libfirm sets. + */ +static const char *set_get_id_str(void *handle, ident *id) +{ + struct set_entry *entry = (struct set_entry *)id; + (void) handle; + + return (const char *)entry->dptr; +} + +/** + * Returns the length of the string represented by an ident. + * + * @param handle the handle for the set + * @param id the ident + * + * Default implementation using libfirm sets. + */ +static int set_get_id_strlen(void *handle, ident *id) +{ + struct set_entry *entry = (struct set_entry *)id; + (void) handle; -set *__id_set; + return entry->size; +} + +/** + * Default implementation using libfirm sets. + */ +void set_finish_ident(void *handle) { + set *id_set = handle; -void id_init(int initial_n_idents) + del_set(id_set); +} + +/** + * Default implementation if no new_id_from_str() is provided. + */ +static ident *def_new_id_from_str(void *handle, const char *str) { - __id_set = new_set(memcmp, initial_n_idents); + return impl.new_id_from_chars(handle, str, strlen(str)); } -void id_finish (void) { - del_set(__id_set); - __id_set = NULL; +/** + * Default implementation if no get_id_strlen() is provided. + */ +static int def_get_id_strlen(void *handle, ident *id) +{ + return strlen(impl.get_id_str(handle, id)); } -ident *(id_from_str)(const char *str, int len) +#ifdef FIRM_ENABLE_WCHAR +/** + * Stores a wide character string in the ident module and returns a + * handle for the string. + * + * @param handle the handle for the set + * @param wstr the wide character string which shall be stored + * @param len length of wstr + * + * @return id - a handle for the generated ident + * + * Default implementation using libfirm sets. + */ +static ident *set_new_id_from_wchars(void *handle, const wchar_t *wstr, int len) { - return __id_from_str(str, len); + set *id_set = handle; + wchar_t *tmp; + + /* can't use hinsert0 here, so copy and add a 0 */ + tmp = alloca((len + 1) * sizeof(*tmp)); + memcpy(tmp, wstr, len * sizeof(*tmp)); + tmp[len] = L'\0'; + + return (ident *)set_hinsert(id_set, tmp, (len + 1) * sizeof(wchar_t), ID_HASH(wchar_t, tmp, len)); +} + +/** + * Stores a wide character string in the ident module and + * returns a handle for the string. + * + * @param handle the handle for the set + * @param wstr the wide character string which shall be stored + * + * Default implementation using libfirm sets. + */ +static ident *set_new_id_from_wcs(void *handle, const wchar_t *wstr) +{ + assert(wstr); + return (ident *)set_new_id_from_wchars(handle, wstr, wcslen(wstr)); +} + +/** + * Returns a wide character string represented by an ident. + * + * @param handle the handle for the set + * @param id the ident + * + * Default implementation using libfirm sets. + */ +static const wchar_t *set_get_id_wcs(void *handle, ident *id) +{ + struct set_entry *entry = (struct set_entry *)id; + + return (const wchar_t *)entry->dptr; +} + +/** + * Returns the length of the string represented by an ident. + * + * @param handle the handle for the set + * @param id the ident + * + * Default implementation using libfirm sets. + */ +static int set_get_id_wcslen(void *handle, ident *id) +{ + struct set_entry *entry = (struct set_entry *)id; + + /* len + \0 is stored for wchar_t */ + return entry->size / sizeof(wchar_t) - 1; +} + +/** + * Default implementation if no new_id_from_wcs() is provided. + */ +static ident *def_new_id_from_wcs(void *handle, const wchar_t *wstr) +{ + return impl.new_id_from_wchars(handle, wstr, wcslen(wstr)); +} + +/** + * Default implementation if no new_id_from_wchars() is provided. + */ +static ident *def_new_id_from_wchars(void *handle, const wchar_t *wstr, int len) +{ + return impl.new_id_from_chars(handle, (const char *)wstr, (len + 1) * sizeof(wchar_t)); +} + +/** + * Default implementation if no get_id_wcs() is provided. + */ +static const wchar_t *def_get_id_wcs(void *handle, ident *id) +{ + return (const wchar_t *)impl.get_id_str(handle, id); +} + +/** + * Default implementation if no get_id_wcslen() is provided. + */ +static int def_get_id_wcslen(void *handle, ident *id) +{ + return wcslen(impl.get_id_wcs(handle, id)); +} +#endif /* FIRM_ENABLE_WCHAR */ + +/* Initialize the ident module. */ +void init_ident(ident_if_t *id_if, int initial_n_idents) +{ + if (id_if) { + memcpy(&impl, id_if, sizeof(impl)); + + if (! impl.new_id_from_str) + impl.new_id_from_str = def_new_id_from_str; + if (! impl.get_id_strlen) + impl.get_id_strlen = def_get_id_strlen; + +#ifdef FIRM_ENABLE_WCHAR + if (! impl.new_id_from_wcs) + impl.new_id_from_wcs = def_new_id_from_wcs; + if (! impl.new_id_from_wchars) + impl.new_id_from_wchars = def_new_id_from_wchars; + if (! impl.get_id_wcs) + impl.get_id_wcs = def_get_id_wcs; + if (! impl.get_id_wcslen) + impl.get_id_wcslen = def_get_id_wcslen; +#endif /* FIRM_ENABLE_WCHAR */ + } + else { + impl.new_id_from_str = set_new_id_from_str; + impl.new_id_from_chars = set_new_id_from_chars; + impl.get_id_str = set_get_id_str; + impl.get_id_strlen = set_get_id_strlen; + impl.finish_ident = set_finish_ident; +#ifdef FIRM_ENABLE_WCHAR + impl.new_id_from_wcs = set_new_id_from_wcs; + impl.new_id_from_wchars = set_new_id_from_wchars; + impl.get_id_wcs = set_get_id_wcs; + impl.get_id_wcslen = set_get_id_wcslen; +#endif /* FIRM_ENABLE_WCHAR */ + + /* it's ok to use memcmp here, we check only strings */ + impl.handle = new_set(memcmp, initial_n_idents); + } } ident *new_id_from_str(const char *str) { assert(str); - return id_from_str(str, strlen(str)); + return impl.new_id_from_str(impl.handle, str); +} + +ident *new_id_from_chars(const char *str, int len) +{ + assert(len > 0); + return impl.new_id_from_chars(impl.handle, str, len); } -const char *(get_id_str)(ident *id) +const char *get_id_str(ident *id) { - return __get_id_str(id); + return impl.get_id_str(impl.handle, id); } -int (get_id_strlen)(ident *id) +int get_id_strlen(ident *id) { - return __get_id_strlen(id); + return impl.get_id_strlen(impl.handle, id); +} + +void finish_ident(void) { + if (impl.finish_ident) + impl.finish_ident(impl.handle); } int id_is_prefix(ident *prefix, ident *id) { if (get_id_strlen(prefix) > get_id_strlen(id)) return 0; - return 0 == memcmp(prefix->dptr, id->dptr, get_id_strlen(prefix)); + return 0 == memcmp(get_id_str(prefix), get_id_str(id), get_id_strlen(prefix)); } int id_is_suffix(ident *suffix, ident *id) { int suflen = get_id_strlen(suffix); int idlen = get_id_strlen(id); - char *part; + const char *part; if (suflen > idlen) return 0; - part = (char *)id->dptr; + part = get_id_str(id); part = part + (idlen - suflen); - return 0 == memcmp(suffix->dptr, part, suflen); + return 0 == memcmp(get_id_str(suffix), part, suflen); } int id_contains_char(ident *id, char c) @@ -80,12 +339,43 @@ int id_contains_char(ident *id, char c) return strchr(get_id_str(id), c) != NULL; } -int print_id (ident *id) +ident *id_unique(const char *tag) +{ + static unsigned unique_id = 0; + char buf[256]; + + snprintf(buf, sizeof(buf), tag, unique_id); + unique_id++; + return new_id_from_str(buf); +} + +#ifdef FIRM_ENABLE_WCHAR + +ident *new_id_from_wcs (const wchar_t *str) +{ + assert(str); + return impl.new_id_from_wcs(impl.handle, str); +} + +ident *new_id_from_wchars (const wchar_t *str, int len) { - return printf("%s", get_id_str(id)); + assert(len > 0); + return impl.new_id_from_wchars(impl.handle, str, len); } -int fprint_id (FILE *F, ident *id) +const wchar_t *get_id_wcs(ident *id) { - return fprintf(F, "%s", get_id_str(id)); + return impl.get_id_wcs(impl.handle, id); } + +int get_id_wcslen(ident *id) +{ + return impl.get_id_wcslen(impl.handle, id); +} + +int id_contains_wchar (ident *id, wchar_t c) +{ + return wcschr(get_id_wcs(id), c) != NULL; +} + +#endif /* FIRM_ENABLE_WCHAR */