X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Flily-guile.cc;h=9cb3f082c46796151c2be80981da3774d1ca8b73;hb=c93997ee6226dae036e411b39e5af873b8726293;hp=cab31a2124a2bbb444eb6e84e79a4db03b158ae6;hpb=1036b837e5c947284f1b64029b912793edab3dad;p=lilypond.git diff --git a/lily/lily-guile.cc b/lily/lily-guile.cc index cab31a2124..9cb3f082c4 100644 --- a/lily/lily-guile.cc +++ b/lily/lily-guile.cc @@ -1,52 +1,53 @@ /* - lily-guile.cc -- implement assorted guile functions + lily-guile.cc -- implement assorted SCM interface functions source file of the GNU LilyPond music typesetter - (c) 1998--2003 Jan Nieuwenhuizen - - Han-Wen Nienhuys + (c) 1998--2005 Jan Nieuwenhuizen + Han-Wen Nienhuys */ -#include -#include -#include /* isinf */ -#include /* strdup, strchr */ - - -#include "lily-proto.hh" - -/* macosx fix: - - - source-file.hh includes cmath which undefines isinf and isnan -*/ -inline int my_isinf(Real r) { return isinf(r); } -inline int my_isnan(Real r) { return isnan(r); } +#include +#include +#include /* strdup, strchr */ +#include +#include // gettext on macos x - - -#include "libc-extension.hh" +#include "config.hh" +#include "version.hh" #include "lily-guile.hh" +#include "libc-extension.hh" #include "main.hh" #include "file-path.hh" #include "warn.hh" #include "direction.hh" #include "offset.hh" -#include "interval.hh" #include "pitch.hh" #include "dimensions.hh" #include "source-file.hh" +#include "misc.hh" // #define TEST_GC SCM -ly_last (SCM list) +ly_to_symbol (SCM scm) { - return ly_car (scm_last_pair (list)); + return scm_string_to_symbol (ly_to_string (scm)); } +SCM +ly_to_string (SCM scm) +{ + return scm_call_3 (ly_lily_module_constant ("format"), SCM_BOOL_F, + scm_makfrom0str ("~S"), scm); +} + +SCM +ly_last (SCM list) +{ + return scm_car (scm_last_pair (list)); +} SCM ly_write2scm (SCM s) @@ -59,11 +60,10 @@ ly_write2scm (SCM s) SCM write = scm_primitive_eval (ly_symbol2scm ("write")); // scm_apply (write, port, SCM_EOL); - gh_call2 (write, s, port); + scm_call_2 (write, s, port); return scm_strport_to_string (port); } - SCM ly_quote_scm (SCM s) { @@ -73,42 +73,44 @@ ly_quote_scm (SCM s) String ly_symbol2string (SCM s) { - assert (gh_symbol_p (s)); - return String ((Byte*)SCM_STRING_CHARS (s), (int) SCM_STRING_LENGTH (s)); + /* + Ugh. this is not very efficient. + */ + SCM str = scm_symbol_to_string (s); + return ly_scm2string (str); } String -gulp_file_to_string (String fn) +gulp_file_to_string (String fn, bool must_exist) { String s = global_path.find (fn); if (s == "") { - String e = _f ("can't find file: `%s'", fn); - e += " "; - e += _f ("(load path: `%s')", global_path.to_string ()); - error (e); + if (must_exist) + { + String e = _f ("can't find file: `%s'", fn); + e += " "; + e += _f ("(load path: `%s')", global_path.to_string ()); + error (e); + /* unreachable */ + } + return s; } - else if (verbose_global_b) + + if (be_verbose_global) progress_indication ("[" + s); int n; - char * str = gulp_file (s, &n); - String result (str); + char *str = gulp_file (s, &n); + String result ((Byte*) str, n); delete[] str; - if (verbose_global_b) + if (be_verbose_global) progress_indication ("]"); return result; } -LY_DEFINE(ly_gulp_file, "ly:gulp-file", 1,0, 0, - (SCM name), - "Read the file named @var{name}, and return its contents in a string. The " -" file is looked up using the lilypond search path.") -{ - return scm_makfrom0str (gulp_file_to_string (ly_scm2string (name)).to_str0 ()); -} extern "C" { @@ -116,19 +118,36 @@ extern "C" { void ly_display_scm (SCM s) { - gh_display (s); - gh_newline (); + scm_display (s, scm_current_output_port ()); + scm_newline (scm_current_output_port ()); } }; String -ly_scm2string (SCM s) +ly_scm2string (SCM str) { - assert (gh_string_p (s)); + assert (scm_is_string (str)); + return String ((Byte*)scm_i_string_chars (str), + (int) scm_i_string_length (str)); +} - char *p = SCM_STRING_CHARS(s); - String r (p); - return r; +char * +ly_scm2newstr (SCM str, size_t *lenp) +{ + SCM_ASSERT_TYPE (scm_is_string (str), str, SCM_ARG1, __FUNCTION__, "string"); + + size_t len = SCM_STRING_LENGTH (str); + if (char *new_str = (char *) malloc ((len + 1) * sizeof (char))) + { + memcpy (new_str, scm_i_string_chars (str), len); + new_str[len] = '\0'; + + if (lenp) + *lenp = len; + + return new_str; + } + return 0; } SCM @@ -136,43 +155,24 @@ index_get_cell (SCM s, Direction d) { assert (d); - return (d == LEFT) ? ly_car (s) : ly_cdr (s); + return (d == LEFT) ? scm_car (s) : scm_cdr (s); } SCM index_set_cell (SCM s, Direction d, SCM v) { if (d == LEFT) - gh_set_car_x (s, v); + scm_set_car_x (s, v); else if (d == RIGHT) - gh_set_cdr_x (s, v); + scm_set_cdr_x (s, v); return s; } -LY_DEFINE(ly_warning,"ly:warn", 1, 0, 0, - (SCM str),"Scheme callable function to issue the warning @code{msg}.") -{ - SCM_ASSERT_TYPE (gh_string_p (str), str, SCM_ARG1, __FUNCTION__, "string"); - warning ("lily-guile: " + ly_scm2string (str)); - return SCM_BOOL_T; -} - -LY_DEFINE(ly_isdir, "ly:dir?", 1,0, 0, (SCM s), - "type predicate. A direction is a -1, 0 or 1, where -1 represents left or " -"down and 1 represents right or up. ") -{ - if (gh_number_p (s)) - { - int i = gh_scm2int (s); - return (i>= -1 && i <= 1) ? SCM_BOOL_T : SCM_BOOL_F; - } - return SCM_BOOL_F; -} - bool -ly_number_pair_p (SCM p) +is_number_pair (SCM p) { - return gh_pair_p (p) && gh_number_p (ly_car (p)) && gh_number_p (ly_cdr (p)); + return scm_is_pair (p) + && scm_is_number (scm_car (p)) && scm_is_number (scm_cdr (p)); } typedef void (*Void_fptr) (); @@ -186,98 +186,106 @@ void add_scm_init_func (void (*f) ()) scm_init_funcs_->push (f); } - +#if KPATHSEA +extern "C" { + void initialize_kpathsea (); +} +#endif + void -ly_init_ly_module (void *data) +ly_init_ly_module (void *) { - for (int i=scm_init_funcs_->size () ; i--;) + for (int i = scm_init_funcs_->size () ; i--;) (scm_init_funcs_->elem (i)) (); - - if (verbose_global_b) + + if (be_verbose_global) progress_indication ("\n"); + +#if KPATHSEA + if (is_TeX_format_global) + { + initialize_kpathsea (); + } +#endif scm_primitive_load_path (scm_makfrom0str ("lily.scm")); } - -SCM lily_module ; +SCM global_lily_module; void -ly_init_guile () +ly_c_init_guile () { - lily_module = scm_c_define_module ("lily", ly_init_ly_module, 0); + global_lily_module = scm_c_define_module ("lily", ly_init_ly_module, 0); scm_c_use_module ("lily"); } -unsigned int ly_scm_hash (SCM s) +unsigned int +ly_scm_hash (SCM s) { return scm_ihashv (s, ~1u); } - - bool -ly_dir_p (SCM s) +is_direction (SCM s) { - if (gh_number_p (s)) + if (scm_is_number (s)) { - int i = gh_scm2int (s); + int i = scm_to_int (s); return i>= -1 && i <= 1; } return false; } - bool -ly_axis_p (SCM s) +is_axis (SCM s) { - if (gh_number_p (s)) + if (scm_is_number (s)) { - int i = gh_scm2int (s); - return i== 0 || i == 1; + int i = scm_to_int (s); + return i == 0 || i == 1; } return false; } - Direction to_dir (SCM s) { - return SCM_INUMP (s) ? (Direction) gh_scm2int (s) : CENTER; + return scm_is_integer (s) ? (Direction) scm_to_int (s) : CENTER; } Interval ly_scm2interval (SCM p) { - return Interval (gh_scm2double (ly_car (p)), - gh_scm2double (ly_cdr (p))); + return Interval (scm_to_double (scm_car (p)), scm_to_double (scm_cdr (p))); +} + +Drul_array +ly_scm2realdrul (SCM p) +{ + return Drul_array (scm_to_double (scm_car (p)), + scm_to_double (scm_cdr (p))); } SCM ly_interval2scm (Drul_array i) { - return gh_cons (gh_double2scm (i[LEFT]), - gh_double2scm (i[RIGHT])); + return scm_cons (scm_make_real (i[LEFT]), scm_make_real (i[RIGHT])); } - - - bool to_boolean (SCM s) { - return gh_boolean_p (s) && gh_scm2bool (s); + return scm_is_bool (s) && ly_scm2bool (s); } -/* - Appendable list L: the cdr contains the list, the car the last cons - in the list. - */ +/* Appendable list L: the cdr contains the list, the car the last cons + in the list. */ SCM appendable_list () { - SCM s = gh_cons (SCM_EOL, SCM_EOL); - gh_set_car_x (s, s); + SCM s = scm_cons (SCM_EOL, SCM_EOL); + scm_set_car_x (s, s); return s; } @@ -285,147 +293,68 @@ appendable_list () void appendable_list_append (SCM l, SCM elt) { - SCM newcons = gh_cons (elt, SCM_EOL); + SCM newcons = scm_cons (elt, SCM_EOL); - gh_set_cdr_x (ly_car (l), newcons); - gh_set_car_x (l, newcons); + scm_set_cdr_x (scm_car (l), newcons); + scm_set_car_x (l, newcons); } - SCM ly_offset2scm (Offset o) { - return gh_cons (gh_double2scm (o[X_AXIS]), gh_double2scm (o[Y_AXIS])); + return scm_cons (scm_make_real (o[X_AXIS]), scm_make_real (o[Y_AXIS])); } Offset ly_scm2offset (SCM s) { - return Offset (gh_scm2double (ly_car (s)), - gh_scm2double (ly_cdr (s))); + return Offset (scm_to_double (scm_car (s)), + scm_to_double (scm_cdr (s))); } - -LY_DEFINE(ly_number2string, "ly:number->string", 1, 0,0, - (SCM s), - " converts @var{num} to a string without generating many decimals. It " -"leaves a space at the end.") +SCM +ly_deep_copy (SCM src) { - SCM_ASSERT_TYPE (gh_number_p (s), s, SCM_ARG1, __FUNCTION__, "number"); - - char str[400]; // ugh. - - if (scm_exact_p (s) == SCM_BOOL_F) + if (scm_is_pair (src)) + return scm_cons (ly_deep_copy (scm_car (src)), ly_deep_copy (scm_cdr (src))); + else if (scm_is_vector (src)) { - Real r (gh_scm2double (s)); - - if (my_isinf (r) || my_isnan (r)) + int len = scm_c_vector_length (src); + SCM nv = scm_c_make_vector (len, SCM_UNDEFINED); + for (int i = 0 ;i < len ; i++) { - programming_error ("Infinity or NaN encountered while converting Real number; setting to zero."); - r = 0.0; + SCM si = scm_int2num (i); + scm_vector_set_x (nv, si, ly_deep_copy (scm_vector_ref (src, si))); } - - sprintf (str, "%8.4f ", r); - } - else - { - sprintf (str, "%d ", gh_scm2int (s)); } - - return scm_makfrom0str (str); -} - -/* - Undef this to see if GUILE GC is causing too many swaps. - */ - -//#define TEST_GC - -#ifdef TEST_GC -#include - -static void * -greet_sweep (void *dummy1, void *dummy2, void *dummy3) -{ - fprintf (stderr, "entering sweep\n"); -} - -static void * -wave_sweep_goodbye (void *dummy1, void *dummy2, void *dummy3) -{ - fprintf (stderr, "leaving sweep\n"); -} -#endif - - -#include "version.hh" -LY_DEFINE(ly_version, "ly:version", 0, 0, 0, (), - "Return the current lilypond version as a list, e.g. @code{(1 3 127 uu1)}. ") -{ - char const* vs = "\' (" MAJOR_VERSION " " MINOR_VERSION " " PATCH_LEVEL " " MY_PATCH_LEVEL ")" ; - - return gh_eval_str ((char*)vs); -} - -LY_DEFINE(ly_unit, "ly:unit", 0, 0, 0, (), - "Return the unit used for lengths as a string.") -{ - return scm_makfrom0str (INTERNAL_UNIT); -} - -LY_DEFINE(ly_verbose, "ly:verbose", 0, 0, 0, (), - "Return whether lilypond is being run in verbose mode.") -{ - return gh_bool2scm (verbose_global_b); -} - -static void -init_functions () -{ -#ifdef TEST_GC - scm_c_hook_add (&scm_before_mark_c_hook, greet_sweep, 0, 0); - scm_c_hook_add (&scm_before_sweep_c_hook, wave_sweep_goodbye, 0, 0); -#endif + return src; } -ADD_SCM_INIT_FUNC (funcs, init_functions); - SCM -ly_deep_copy (SCM src) +ly_chain_assoc_get (SCM key, SCM achain, SCM dfault) { - if (gh_pair_p (src)) + if (scm_is_pair (achain)) { - return gh_cons (ly_deep_copy (ly_car (src)), ly_deep_copy (ly_cdr (src))); - } - else if (gh_vector_p (src)) - { - int l = SCM_VECTOR_LENGTH (src); - SCM nv = scm_c_make_vector (l, SCM_UNDEFINED); - for (int i =0 ; i< l ; i++) - { - SCM si = gh_int2scm (i); - scm_vector_set_x (nv, si, ly_deep_copy (scm_vector_ref (src, si))); - } + SCM handle = scm_assoc (key, scm_car (achain)); + if (scm_is_pair (handle)) + return scm_cdr (handle); + else + return ly_chain_assoc (key, scm_cdr (achain)); } else - return src; - - return src; + return dfault; } - - - SCM -ly_assoc_chain (SCM key, SCM achain) +ly_chain_assoc (SCM key, SCM achain) { - if (gh_pair_p (achain)) + if (scm_is_pair (achain)) { - SCM handle = scm_assoc (key, ly_car (achain)); - if (gh_pair_p (handle)) + SCM handle = scm_assoc (key, scm_car (achain)); + if (scm_is_pair (handle)) return handle; else - return ly_assoc_chain (key, ly_cdr (achain)); + return ly_chain_assoc (key, scm_cdr (achain)); } else return SCM_BOOL_F; @@ -453,39 +382,36 @@ corresponds to call SCM ly_assoc_cdr (SCM key, SCM alist) { - if (gh_pair_p (alist)) { - SCM trykey = ly_caar(alist); - if(gh_pair_p(trykey) && to_boolean(scm_equal_p(key,ly_cdr(trykey)))) - return ly_car(alist); - else - return ly_assoc_cdr (key, ly_cdr (alist)); - } - else - return SCM_BOOL_F; + if (scm_is_pair (alist)) + { + SCM trykey = scm_caar (alist); + if (scm_is_pair (trykey) && to_boolean (scm_equal_p (key, scm_cdr (trykey)))) + return scm_car (alist); + else + return ly_assoc_cdr (key, scm_cdr (alist)); + } + return SCM_BOOL_F; } -/* - LIST has the form "sym1 sym2 sym3\nsym4\nsym5" - - i.e. \n and ' ' can be used interchangeably as separators. - */ +/* LST has the form "sym1 sym2 sym3\nsym4\nsym5" + i.e. \n and ' ' can be used interchangeably as separators. */ SCM -parse_symbol_list (const char * list) +parse_symbol_list (char const *lst) { - char * s = strdup (list); + char *s = strdup (lst); char *orig = s; SCM create_list = SCM_EOL; + char * e = s + strlen (s) - 1; + while (e >= s && isspace (*e)) + *e-- = 0; + for (char * p = s; *p; p++) - { - if (*p == '\n') - *p = ' ' ; - } + if (*p == '\n') + *p = ' '; - if (!s[0] ) + if (!s[0]) s = 0; - - while (s) { @@ -493,7 +419,7 @@ parse_symbol_list (const char * list) if (next) *next++ = 0; - create_list = gh_cons (ly_symbol2scm (s), create_list); + create_list = scm_cons (ly_symbol2scm (s), create_list); s = next; } @@ -501,37 +427,32 @@ parse_symbol_list (const char * list) return create_list; } - SCM -ly_truncate_list (int k, SCM l ) +ly_truncate_list (int k, SCM lst) { if (k == 0) - { - l = SCM_EOL; - } + lst = SCM_EOL; else { - SCM s = l; + SCM s = lst; k--; - for (; gh_pair_p (s) && k--; s = ly_cdr (s)) + for (; scm_is_pair (s) && k--; s = scm_cdr (s)) ; - if (gh_pair_p (s)) - { - gh_set_cdr_x (s, SCM_EOL); - } + if (scm_is_pair (s)) + scm_set_cdr_x (s, SCM_EOL); } - return l; + return lst; } - String print_scm_val (SCM val) { String realval = ly_scm2string (ly_write2scm (val)); if (realval.length () > 200) - realval = realval.left_string (100) + "\n :\n :\n" + realval.right_string (100); - + realval = realval.left_string (100) + + "\n :\n :\n" + + realval.right_string (100); return realval; } @@ -549,13 +470,24 @@ type_check_assignment (SCM sym, SCM val, SCM type_symbol) if (val == SCM_EOL || val == SCM_BOOL_F) return ok; - - SCM type = SCM_EOL; + if (!scm_is_symbol (sym)) +#if 0 + return false; +#else + /* + This is used for autoBeamSettings. - if (gh_symbol_p (sym)) - type = scm_object_property (sym, type_symbol); + TODO: deprecate the use of \override and \revert for + autoBeamSettings? - if (type != SCM_EOL && !gh_procedure_p (type)) + or use a symbol autoBeamSettingS? + */ + return true; +#endif + + SCM type = scm_object_property (sym, type_symbol); + + if (type != SCM_EOL && !ly_c_procedure_p (type)) { warning (_f ("Can't find property type-check for `%s' (%s).", ly_symbol2string (sym).to_str0 (), @@ -563,7 +495,7 @@ type_check_assignment (SCM sym, SCM val, SCM type_symbol) + " " + _ ("Perhaps you made a typing error?")); /* Be strict when being anal :) */ - if (internal_type_checking_global_b) + if (do_internal_type_checking_global) abort (); warning (_ ("Doing assignment anyway.")); @@ -571,13 +503,13 @@ type_check_assignment (SCM sym, SCM val, SCM type_symbol) else { if (val != SCM_EOL - && gh_procedure_p (type) - && gh_call1 (type, val) == SCM_BOOL_F) + && ly_c_procedure_p (type) + && scm_call_1 (type, val) == SCM_BOOL_F) { SCM errport = scm_current_error_port (); ok = false; - SCM typefunc = scm_primitive_eval (ly_symbol2scm ("type-name")); - SCM type_name = gh_call1 (typefunc, type); + SCM typefunc = ly_lily_module_constant ("type-name"); + SCM type_name = scm_call_1 (typefunc, type); scm_puts (_f ("Type check for `%s' failed; value `%s' must be of type `%s'", @@ -603,39 +535,77 @@ SCM ly_unique (SCM list) { SCM unique = SCM_EOL; - for (SCM i = list; gh_pair_p (i); i = ly_cdr (i)) + for (SCM i = list; scm_is_pair (i); i = scm_cdr (i)) { - if (!gh_pair_p (ly_cdr (i)) - || !gh_equal_p (ly_car (i), ly_cadr (i))) - unique = gh_cons (ly_car (i), unique); + if (!scm_is_pair (scm_cdr (i)) + || !ly_c_equal_p (scm_car (i), scm_cadr (i))) + unique = scm_cons (scm_car (i), unique); } return scm_reverse_x (unique, SCM_EOL); } + +static int +scm_default_compare (void const *a, void const *b) +{ + SCM pa = *(SCM*) a; + SCM pb = *(SCM*) b; + if (pa == pb) + return 0; + return pa < pb ? -1 : 1; +} + +/* Modify LST in place: qsort it. */ +SCM +ly_list_qsort_uniq_x (SCM lst) +{ + int len = scm_ilength (lst); + SCM *arr = new SCM[len]; + int k = 0; + for (SCM s = lst; SCM_NNULLP (s); s = scm_cdr (s)) + arr[k++] = scm_car (s); + + assert (k == len); + qsort (arr, len, sizeof (SCM), &scm_default_compare); + + SCM *tail = &lst; + for (int i = 0; i < len; i++) + if (!i || arr[i] != arr[i - 1]) + { + SCM_SETCAR (*tail, arr[i]); + tail = SCM_CDRLOC (*tail); + } + + *tail = SCM_EOL; + delete[] arr; + + return lst; +} + + /* tail add */ SCM ly_snoc (SCM s, SCM list) { - return gh_append2 (list, scm_list_n (s, SCM_UNDEFINED)); + return ly_append2 (list, scm_list_n (s, SCM_UNDEFINED)); } - /* Split list at member s, removing s. - Return (BEFORE . AFTER) */ + Return (BEFORE . AFTER) */ SCM ly_split_list (SCM s, SCM list) { SCM before = SCM_EOL; SCM after = list; - for (; gh_pair_p (after);) + for (; scm_is_pair (after);) { - SCM i = ly_car (after); - after = ly_cdr (after); - if (gh_equal_p (i, s)) + SCM i = scm_car (after); + after = scm_cdr (after); + if (ly_c_equal_p (i, s)) break; - before = gh_cons (i, before); + before = scm_cons (i, before); } - return gh_cons ( scm_reverse_x (before, SCM_EOL), after); + return scm_cons ( scm_reverse_x (before, SCM_EOL), after); } @@ -654,12 +624,12 @@ taint (SCM *) SCM display_list (SCM s) { - SCM p = scm_current_output_port(); + SCM p = scm_current_output_port (); scm_puts ("(", p); - for (; gh_pair_p(s); s =gh_cdr(s)) + for (; scm_is_pair (s); s = scm_cdr (s)) { - scm_display (gh_car(s), p); + scm_display (scm_car (s), p); scm_puts (" ", p); } scm_puts (")", p); @@ -671,30 +641,121 @@ int_list_to_slice (SCM l) { Slice s; s.set_empty (); - for (; gh_pair_p (l); l = gh_cdr (l)) + for (; scm_is_pair (l); l = scm_cdr (l)) + if (scm_is_number (scm_car (l))) + s.add_point (scm_to_int (scm_car (l))); + return s; +} + +/* Return I-th element, or last elt L. If I < 0, then we take the first + element. + + PRE: length (L) > 0 */ +SCM +robust_list_ref (int i, SCM l) +{ + while (i-- > 0 && scm_is_pair (scm_cdr (l))) + l = scm_cdr (l); + return scm_car (l); +} + +Real +robust_scm2double (SCM k, double x) +{ + if (scm_is_number (k)) + x = scm_to_double (k); + return x; +} + +Interval +robust_scm2interval (SCM k, Drul_array v) +{ + Interval i; + i[LEFT]= v[LEFT]; + i[RIGHT]= v[RIGHT]; + if (is_number_pair (k)) + i = ly_scm2interval (k); + return i; +} + +Drul_array +robust_scm2drul (SCM k, Drul_array v) +{ + if (is_number_pair (k)) + v = ly_scm2interval (k); + return v; +} + +Offset +robust_scm2offset (SCM k, Offset o) +{ + if (is_number_pair (k)) + o = ly_scm2offset (k); + return o; +} + +int +robust_scm2int (SCM k, int o) +{ + if (scm_integer_p (k) == SCM_BOOL_T) + o = scm_to_int (k); + return o; +} + +SCM +alist_to_hashq (SCM alist) +{ + int i = scm_ilength (alist); + if (i < 0) + return scm_c_make_hash_table (0); + + SCM tab = scm_c_make_hash_table (i); + for (SCM s = alist; scm_is_pair (s); s = scm_cdr (s)) { - if (gh_number_p (gh_car (l))) - s.add_point (gh_scm2int (gh_car (l))); + SCM pt = scm_cdar (s); + scm_hashq_set_x (tab, scm_caar (s), pt); } - - return s; + return tab; } +bool +alist_equal_p (SCM a, SCM b) +{ + for (SCM s = a; + scm_is_pair (s); s = scm_cdr (s)) + { + SCM key = scm_caar (s); + SCM val = scm_cdar (s); + SCM l = scm_assoc (key, b); + + if (l == SCM_BOOL_F + || !ly_c_equal_p ( scm_cdr (l), val)) + + return false; + } + return true; +} -/* - Return I-th element, or last elt L. If I < 0, then we take the first - element. - PRE: length (L) > 0 - */ SCM -robust_list_ref(int i, SCM l) +ly_alist_vals (SCM alist) { - while (i-- > 0 && gh_pair_p (gh_cdr(l))) - l = gh_cdr (l); + SCM x = SCM_EOL; + for (SCM p = alist; scm_is_pair (p); p = scm_cdr (p)) + { + x = scm_cons (scm_cdar (p), x); + } + return x; +} - return gh_car(l); +SCM +ly_hash2alist (SCM tab) +{ + SCM func = ly_lily_module_constant ("hash-table->alist"); + return scm_call_1 (func, tab); } + +