/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001 Free Software Foundation * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this software; see the file COPYING. If not, write to * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, * Boston, MA 02111-1307 USA * * As a special exception, the Free Software Foundation gives permission * for additional uses of the text contained in its release of GUILE. * * The exception is that, if you link the GUILE library with other files * to produce an executable, this does not by itself cause the * resulting executable to be covered by the GNU General Public License. * Your use of that executable is in no way restricted on account of * linking the GUILE library code into it. * * This exception does not however invalidate any other reasons why * the executable file might be covered by the GNU General Public License. * * This exception applies only to the code released by the * Free Software Foundation under the name GUILE. If you copy * code from other Free Software Foundation releases into a copy of * GUILE, as the General Public License permits, the exception does * not apply to the code that you add in this way. To avoid misleading * anyone as to the status of such modified files, you must delete * this exception notice from them. * * If you write modifications of your own for GUILE, it is your choice * whether to permit this exception to apply to your modifications. * If you do not wish that, delete this exception notice. * * The author can be reached at djurfeldt@nada.kth.se * Mikael Djurfeldt, SANS/NADA KTH, 10044 STOCKHOLM, SWEDEN */ #include #include "libguile/_scm.h" #include "libguile/smob.h" #include "libguile/alist.h" #include "libguile/debug.h" #include "libguile/hashtab.h" #include "libguile/hash.h" #include "libguile/ports.h" #include "libguile/root.h" #include "libguile/weaks.h" #include "libguile/validate.h" #include "libguile/srcprop.h" /* {Source Properties} * * Properties of source list expressions. * Five of these have special meaning and optimized storage: * * filename string The name of the source file. * copy list A copy of the list expression. * line integer The source code line number. * column integer The source code column number. * breakpoint boolean Sets a breakpoint on this form. * * Most properties above can be set by the reader. * */ SCM_GLOBAL_SYMBOL (scm_sym_filename, "filename"); SCM_GLOBAL_SYMBOL (scm_sym_copy, "copy"); SCM_GLOBAL_SYMBOL (scm_sym_line, "line"); SCM_GLOBAL_SYMBOL (scm_sym_column, "column"); SCM_GLOBAL_SYMBOL (scm_sym_breakpoint, "breakpoint"); scm_t_bits scm_tc16_srcprops; static scm_t_srcprops_chunk *srcprops_chunklist = 0; static scm_t_srcprops *srcprops_freelist = 0; static SCM srcprops_mark (SCM obj) { scm_gc_mark (SRCPROPFNAME (obj)); scm_gc_mark (SRCPROPCOPY (obj)); return SRCPROPPLIST (obj); } static size_t srcprops_free (SCM obj) { *((scm_t_srcprops **) SCM_CELL_WORD_1 (obj)) = srcprops_freelist; srcprops_freelist = (scm_t_srcprops *) SCM_CELL_WORD_1 (obj); return 0; /* srcprops_chunks are not freed until leaving guile */ } static int srcprops_print (SCM obj, SCM port, scm_print_state *pstate) { int writingp = SCM_WRITINGP (pstate); scm_puts ("#', port); return 1; } SCM scm_make_srcprops (long line, int col, SCM filename, SCM copy, SCM plist) { register scm_t_srcprops *ptr; SCM_DEFER_INTS; if ((ptr = srcprops_freelist) != NULL) srcprops_freelist = *(scm_t_srcprops **)ptr; else { size_t i; scm_t_srcprops_chunk *mem; size_t n = sizeof (scm_t_srcprops_chunk) + sizeof (scm_t_srcprops) * (SRCPROPS_CHUNKSIZE - 1); SCM_SYSCALL (mem = (scm_t_srcprops_chunk *) malloc (n)); if (mem == NULL) scm_memory_error ("srcprops"); scm_mallocated += n; mem->next = srcprops_chunklist; srcprops_chunklist = mem; ptr = &mem->srcprops[0]; for (i = 1; i < SRCPROPS_CHUNKSIZE - 1; ++i) *(scm_t_srcprops **)&ptr[i] = &ptr[i + 1]; *(scm_t_srcprops **)&ptr[SRCPROPS_CHUNKSIZE - 1] = 0; srcprops_freelist = (scm_t_srcprops *) &ptr[1]; } ptr->pos = SRCPROPMAKPOS (line, col); ptr->fname = filename; ptr->copy = copy; ptr->plist = plist; SCM_ALLOW_INTS; SCM_RETURN_NEWSMOB (scm_tc16_srcprops, ptr); } SCM scm_srcprops_to_plist (SCM obj) { SCM plist = SRCPROPPLIST (obj); if (!SCM_UNBNDP (SRCPROPCOPY (obj))) plist = scm_acons (scm_sym_copy, SRCPROPCOPY (obj), plist); if (!SCM_UNBNDP (SRCPROPFNAME (obj))) plist = scm_acons (scm_sym_filename, SRCPROPFNAME (obj), plist); plist = scm_acons (scm_sym_column, SCM_MAKINUM (SRCPROPCOL (obj)), plist); plist = scm_acons (scm_sym_line, SCM_MAKINUM (SRCPROPLINE (obj)), plist); plist = scm_acons (scm_sym_breakpoint, SRCPROPBRK (obj), plist); return plist; } SCM_DEFINE (scm_source_properties, "source-properties", 1, 0, 0, (SCM obj), "Return the source property association list of @var{obj}.") #define FUNC_NAME s_scm_source_properties { SCM p; SCM_VALIDATE_NIM (1,obj); if (SCM_MEMOIZEDP (obj)) obj = SCM_MEMOIZED_EXP (obj); #ifndef SCM_RECKLESS else if (SCM_NCONSP (obj)) SCM_WRONG_TYPE_ARG (1, obj); #endif p = scm_hashq_ref (scm_source_whash, obj, SCM_EOL); if (SRCPROPSP (p)) return scm_srcprops_to_plist (p); else /* list from set-source-properties!, or SCM_EOL for not found */ return p; } #undef FUNC_NAME /* Perhaps this procedure should look through an alist and try to make a srcprops-object...? */ SCM_DEFINE (scm_set_source_properties_x, "set-source-properties!", 2, 0, 0, (SCM obj, SCM plist), "Install the association list @var{plist} as the source property\n" "list for @var{obj}.") #define FUNC_NAME s_scm_set_source_properties_x { SCM handle; SCM_VALIDATE_NIM (1,obj); if (SCM_MEMOIZEDP (obj)) obj = SCM_MEMOIZED_EXP (obj); #ifndef SCM_RECKLESS else if (SCM_NCONSP (obj)) SCM_WRONG_TYPE_ARG(1, obj); #endif handle = scm_hashq_create_handle_x (scm_source_whash, obj, plist); SCM_SETCDR (handle, plist); return plist; } #undef FUNC_NAME SCM_DEFINE (scm_source_property, "source-property", 2, 0, 0, (SCM obj, SCM key), "Return the source property specified by @var{key} from\n" "@var{obj}'s source property list.") #define FUNC_NAME s_scm_source_property { SCM p; SCM_VALIDATE_NIM (1,obj); if (SCM_MEMOIZEDP (obj)) obj = SCM_MEMOIZED_EXP (obj); #ifndef SCM_RECKLESS else if (SCM_NECONSP (obj)) SCM_WRONG_TYPE_ARG (1, obj); #endif p = scm_hashq_ref (scm_source_whash, obj, SCM_EOL); if (SCM_IMP (p) || !SRCPROPSP (p)) goto plist; if (SCM_EQ_P (scm_sym_breakpoint, key)) p = SRCPROPBRK (p); else if (SCM_EQ_P (scm_sym_line, key)) p = SCM_MAKINUM (SRCPROPLINE (p)); else if (SCM_EQ_P (scm_sym_column, key)) p = SCM_MAKINUM (SRCPROPCOL (p)); else if (SCM_EQ_P (scm_sym_filename, key)) p = SRCPROPFNAME (p); else if (SCM_EQ_P (scm_sym_copy, key)) p = SRCPROPCOPY (p); else { p = SRCPROPPLIST (p); plist: p = scm_assoc (key, p); return (SCM_NIMP (p) ? SCM_CDR (p) : SCM_BOOL_F); } return SCM_UNBNDP (p) ? SCM_BOOL_F : p; } #undef FUNC_NAME SCM_DEFINE (scm_set_source_property_x, "set-source-property!", 3, 0, 0, (SCM obj, SCM key, SCM datum), "Set the source property of object @var{obj}, which is specified by\n" "@var{key} to @var{datum}. Normally, the key will be a symbol.") #define FUNC_NAME s_scm_set_source_property_x { scm_whash_handle h; SCM p; SCM_VALIDATE_NIM (1,obj); if (SCM_MEMOIZEDP (obj)) obj = SCM_MEMOIZED_EXP (obj); #ifndef SCM_RECKLESS else if (SCM_NCONSP (obj)) SCM_WRONG_TYPE_ARG (1, obj); #endif h = scm_whash_get_handle (scm_source_whash, obj); if (SCM_WHASHFOUNDP (h)) p = SCM_WHASHREF (scm_source_whash, h); else { h = scm_whash_create_handle (scm_source_whash, obj); p = SCM_EOL; } if (SCM_EQ_P (scm_sym_breakpoint, key)) { if (SRCPROPSP (p)) { if (SCM_FALSEP (datum)) CLEARSRCPROPBRK (p); else SETSRCPROPBRK (p); } else { SCM sp = scm_make_srcprops (0, 0, SCM_UNDEFINED, SCM_UNDEFINED, p); SCM_WHASHSET (scm_source_whash, h, sp); if (SCM_FALSEP (datum)) CLEARSRCPROPBRK (sp); else SETSRCPROPBRK (sp); } } else if (SCM_EQ_P (scm_sym_line, key)) { SCM_VALIDATE_INUM (3,datum); if (SRCPROPSP (p)) SETSRCPROPLINE (p, SCM_INUM (datum)); else SCM_WHASHSET (scm_source_whash, h, scm_make_srcprops (SCM_INUM (datum), 0, SCM_UNDEFINED, SCM_UNDEFINED, p)); } else if (SCM_EQ_P (scm_sym_column, key)) { SCM_VALIDATE_INUM (3,datum); if (SRCPROPSP (p)) SETSRCPROPCOL (p, SCM_INUM (datum)); else SCM_WHASHSET (scm_source_whash, h, scm_make_srcprops (0, SCM_INUM (datum), SCM_UNDEFINED, SCM_UNDEFINED, p)); } else if (SCM_EQ_P (scm_sym_filename, key)) { if (SRCPROPSP (p)) SRCPROPFNAME (p) = datum; else SCM_WHASHSET (scm_source_whash, h, scm_make_srcprops (0, 0, datum, SCM_UNDEFINED, p)); } else if (SCM_EQ_P (scm_sym_copy, key)) { if (SRCPROPSP (p)) SRCPROPCOPY (p) = datum; else SCM_WHASHSET (scm_source_whash, h, scm_make_srcprops (0, 0, SCM_UNDEFINED, datum, p)); } else SCM_WHASHSET (scm_source_whash, h, scm_acons (key, datum, p)); return SCM_UNSPECIFIED; } #undef FUNC_NAME void scm_init_srcprop () { scm_tc16_srcprops = scm_make_smob_type ("srcprops", 0); scm_set_smob_mark (scm_tc16_srcprops, srcprops_mark); scm_set_smob_free (scm_tc16_srcprops, srcprops_free); scm_set_smob_print (scm_tc16_srcprops, srcprops_print); scm_source_whash = scm_make_weak_key_hash_table (SCM_MAKINUM (2047)); scm_c_define ("source-whash", scm_source_whash); #include "libguile/srcprop.x" } void scm_finish_srcprop () { register scm_t_srcprops_chunk *ptr = srcprops_chunklist, *next; while (ptr) { next = ptr->next; free ((char *) ptr); scm_mallocated -= sizeof (scm_t_srcprops_chunk) + sizeof (scm_t_srcprops) * (SRCPROPS_CHUNKSIZE - 1); ptr = next; } } /* Local Variables: c-file-style: "gnu" End: */