source file of the GNU LilyPond music typesetter
- (c) 1998 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 1998--1999 Jan Nieuwenhuizen <janneke@gnu.org>
Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
+
#include <stdio.h>
+#include <stdlib.h>
+
#include "libc-extension.hh"
#include "lily-guile.hh"
#include "main.hh"
+#include "simple-file-storage.hh"
+#include "file-path.hh"
+#include "debug.hh"
SCM
-ly_append (SCM a, SCM b)
+ly_ch_C_to_scm (char const*c)
{
- return gh_call2 (gh_eval_str ("append"), a, b);
+ // this all really sucks, guile should take char const* arguments!
+ return gh_str02scm ((char*)c);
}
SCM
-ly_list1 (SCM a)
+ly_ch_C_eval_scm (char const*c)
{
- return gh_call1 (gh_eval_str ("list"), a);
+ // this all really sucks, guile should take char const* arguments!
+ return gh_eval_str ((char*)c);
}
+
+/*
+ Pass string to scm parser, evaluate one expression.
+ Return result value and #chars read.
+
+ Thanks to Gary Houston <ghouston@freewire.co.uk>
+
+ Need guile-1.3.4 (>1.3 anyway) for ftell on str ports -- jcn
+*/
SCM
-ly_quote ()
+ly_parse_scm (char const* s, int* n)
{
- return gh_eval_str ("'quote");
+ SCM str = gh_str02scm ((char*)s);
+ SCM port = scm_mkstrport (SCM_INUM0, str, SCM_OPN | SCM_RDNG,
+ "scm_eval_0str");
+ SCM from = scm_ftell (port);
+
+ SCM form;
+ SCM answer = SCM_UNSPECIFIED;
+
+ /* Read expression from port */
+ if (!SCM_EOF_OBJECT_P (form = scm_read (port)))
+ answer = scm_eval_x (form);
+
+ /*
+ After parsing
+
+ (begin (foo 1 2))
+
+ all seems fine, but after parsing
+
+ (foo 1 2)
+
+ read_buf has been advanced to read_pos - 1,
+ so that scm_ftell returns 1, instead of #parsed chars
+ */
+
+ /*
+ urg: reset read_buf for scm_ftell
+ shouldn't scm_read () do this for us?
+ */
+ scm_fill_input (port);
+ SCM to = scm_ftell (port);
+ *n = gh_scm2int (to) - gh_scm2int (from);
+
+ /* Don't close the port here; if we re-enter this function via a
+ continuation, then the next time we enter it, we'll get an error.
+ It's a string port anyway, so there's no advantage to closing it
+ early.
+
+ scm_close_port (port);
+ */
+
+ return answer;
}
+/*
+ scm_m_quote doesn't use any env, but needs one for a good signature in GUILE.
+*/
+
SCM
ly_quote_scm (SCM s)
{
- return gh_list (ly_quote (), s, SCM_UNDEFINED);
+ return scm_m_quote (scm_cons2 (SCM_EOL, s, SCM_EOL) ,SCM_EOL); // apparently env arg is ignored.
}
+/*
+ See: libguile/symbols.c
+
+ SCM
+ scm_string_to_symbol(s)
+
+*/
SCM
-ly_eval (SCM a)
+ly_symbol (String name)
{
- return gh_call1 (gh_eval_str ("eval"), a);
+ return gh_car (scm_intern ((char*)name.ch_C(), name.length_i()));
}
-SCM
-ly_lambda_o ()
+String
+symbol_to_string (SCM s)
{
- return gh_eval_str ("'(lambda (o))");
+ return String((Byte*)SCM_CHARS (s), (int) SCM_LENGTH(s));
}
SCM
-ly_func_o (char const* name)
+ly_set_scm (String name, SCM val)
{
- char buf[200]; // ugh.
- snprintf (buf, 200, "'(%s o)", name);
- return gh_eval_str (buf);
+ return scm_sysintern ((char*)name.ch_C(), val);
+
}
-
-SCM
-lambda_scm (String str, Array<int> args_arr)
+/**
+ Read a file, and shove it down GUILE. GUILE also has file read
+ functions, but you can't fiddle with the path of those.
+ */
+void
+read_lily_scm_file (String fn)
{
- if (str.empty_b ())
+ String s = global_path.find (fn);
+ if (s == "")
{
- str = "empty";
- args_arr.clear ();
+ String e = _f ("Can't find file: `%s'", fn);
+ e += " ";
+ e += _f ("(load path: `%s')", global_path.str ());
+ error (e);
}
- SCM args_scm = SCM_EOL;
- for (int i = args_arr.size () - 1; i >= 0; i--)
- args_scm = gh_cons (gh_int2scm (args_arr[i]), args_scm);
- SCM scm =
- ly_append (ly_lambda_o (),
- ly_list1 (ly_append (ly_func_o (str.ch_l ()), args_scm)));
- return scm;
+ else
+ *mlog << '[' << s;
+
+
+ Simple_file_storage f(s);
+
+ ly_ch_C_eval_scm ((char *) f.ch_C());
+ *mlog << "]" << flush;
}
+
SCM
-lambda_scm (String str, Array<Scalar> args_arr)
+ly_gulp_file (SCM name)
{
- if (str.empty_b ())
+ String fn (ly_scm2string (name));
+ String s = global_path.find (fn);
+ if (s == "")
{
- str = "empty";
- args_arr.clear ();
+ String e = _f ("Can't find file: `%s'", fn);
+ e += " ";
+ e += _f ("(load path: `%s')", global_path.str ());
+ error (e);
}
- SCM args_scm = SCM_EOL;
- for (int i = args_arr.size () - 1; i >= 0; i--)
- args_scm = gh_cons (gh_str02scm (args_arr[i].ch_l ()), args_scm);
- SCM scm =
- ly_append (ly_lambda_o (),
- ly_list1 (ly_append (ly_func_o (str.ch_l ()), args_scm)));
- return scm;
+ else
+ *mlog << '[' << s;
+
+
+ Simple_file_storage f(s);
+ return ly_ch_C_to_scm (f.ch_C());
+}
+
+void
+ly_display_scm (SCM s)
+{
+ gh_display (s);
+ gh_newline ();
+}
+
+String
+ly_scm2string (SCM s)
+{
+ int len;
+ char * p = gh_scm2newstr (s , &len);
+
+ String r (p);
+
+ free (p);
+ return r;
}
SCM
-lambda_scm (String str, Array<Real> args_arr)
+index_cell (SCM s, Direction d)
{
- if (str.empty_b ())
+ assert (d);
+ return (d == LEFT) ? SCM_CAR (s) : SCM_CDR (s);
+}
+
+
+SCM
+array_to_list (SCM *a , int l)
+{
+ SCM list = SCM_EOL;
+ for (int i= l; i--; )
{
- str = "empty";
- args_arr.clear ();
+ list = gh_cons (a[i], list);
}
- SCM args_scm = SCM_EOL;
- for (int i = args_arr.size () - 1; i >= 0; i--)
- args_scm = gh_cons (gh_double2scm (args_arr[i]), args_scm);
- SCM scm =
- ly_append (ly_lambda_o (),
- ly_list1 (ly_append (ly_func_o (str.ch_l ()), args_scm)));
- return scm;
+ return list;
}
+SCM
+ly_warning (SCM str)
+{
+ assert (gh_string_p (str));
+ warning ("lily-guile: " + ly_scm2string (str));
+ return SCM_BOOL_T;
+}
+void
+init_functions ()
+{
+ scm_make_gsubr ("ly-warn", 1, 0, 0, (SCM(*)(...))ly_warning);
+ scm_make_gsubr ("ly-gulp-file", 1,0, 0, (SCM(*)(...))ly_gulp_file);
+}
+
+ADD_SCM_INIT_FUNC(funcs, init_functions);
+
+
+typedef void (*Void_fptr)();
+Array<Void_fptr> *scm_init_funcs_;
+
+void add_scm_init_func (void (*f)())
+{
+ if (!scm_init_funcs_)
+ scm_init_funcs_ = new Array<Void_fptr>;
+
+ scm_init_funcs_->push (f);
+}
+
+void
+init_lily_guile ()
+{
+ for (int i=scm_init_funcs_->size() ; i--;)
+ (scm_init_funcs_->elem (i)) ();
+}
+
+unsigned int ly_scm_hash (SCM s)
+{
+ return scm_ihashv (s, ~1u);
+}
projects / lilypond.git / blobdiff