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/*
prob.cc -- implement Prob
source file of the GNU LilyPond music typesetter
(c) 2004--2007 Jan Nieuwenhuizen <janneke@gnu.org>
*/
#include "prob.hh"
#include "main.hh"
#include "item.hh"
#include "input.hh"
#include "profile.hh"
#include "ly-smobs.icc"
IMPLEMENT_SMOBS (Prob);
IMPLEMENT_TYPE_P (Prob, "ly:prob?");
SCM
Prob::equal_p (SCM sa, SCM sb)
{
/* This comparison function is only designed to make the copy
constructor preserve equality.
Perhaps it would be better to use a more strict definition of
equality; e.g., that that two probs are equal iff they can be
distinguished by calls to ly:prob-property.
*/
Prob *probs[2] = {unsmob_prob (sa), unsmob_prob (sb)};
SCM props[2][2];
int i;
for (i = 0; i < 2; i++)
{
props[i][0] = probs[i]->immutable_property_alist_;
props[i][1] = probs[i]->mutable_property_alist_;
}
if (strcmp (probs[0]->class_name (), probs[1]->class_name ()))
return SCM_BOOL_F;
/* Compare mutable and immutable lists, element by element. */
for (i = 0; i < 2; i++)
{
SCM aprop = props[0][i];
SCM bprop = props[1][i];
for (;
scm_is_pair (aprop) && scm_is_pair (bprop);
aprop = scm_cdr (aprop), bprop = scm_cdr (bprop))
{
SCM aval = scm_cdar (aprop);
SCM bval = scm_cdar (bprop);
if (scm_caar (aprop) != scm_caar (bprop) ||
(
!(unsmob_input (aval) && unsmob_input (bval))
&&
!to_boolean (scm_equal_p (aval, bval))))
return SCM_BOOL_F;
}
/* is one list shorter? */
if (aprop != SCM_EOL || bprop != SCM_EOL)
return SCM_BOOL_F;
}
return SCM_BOOL_T;
}
Prob::Prob (SCM type, SCM immutable_init)
{
self_scm_ = SCM_EOL;
mutable_property_alist_ = SCM_EOL;
immutable_property_alist_ = immutable_init;
type_ = type;
smobify_self ();
}
Prob::~Prob ()
{
}
Prob::Prob (Prob const &src)
{
immutable_property_alist_ = src.immutable_property_alist_;
mutable_property_alist_ = SCM_EOL;
self_scm_ = SCM_EOL;
type_ = src.type_;
/* First we smobify_self, then we copy over the stuff. If we don't,
stack vars that hold the copy might be optimized away, meaning
that they won't be protected from GC. */
smobify_self ();
mutable_property_alist_ = src.copy_mutable_properties ();
}
SCM
Prob::copy_mutable_properties () const
{
return ly_deep_copy (mutable_property_alist_);
}
void
Prob::derived_mark () const
{
}
SCM
Prob::mark_smob (SCM smob)
{
ASSERT_LIVE_IS_ALLOWED ();
Prob *system = (Prob *) SCM_CELL_WORD_1 (smob);
scm_gc_mark (system->mutable_property_alist_);
system->derived_mark ();
return system->immutable_property_alist_;
}
int
Prob::print_smob (SCM smob, SCM port, scm_print_state*)
{
Prob *p = (Prob *) SCM_CELL_WORD_1 (smob);
scm_puts ("#<", port);
scm_puts ("Prob: ", port);
scm_display (p->type_, port);
scm_puts (" C++: ", port);
scm_puts (p->class_name (), port);
scm_display (p->mutable_property_alist_, port);
scm_display (p->immutable_property_alist_, port);
scm_puts (" >\n", port);
return 1;
}
SCM
Prob::internal_get_property (SCM sym) const
{
#ifndef NDEBUG
if (profile_property_accesses)
note_property_access (&prob_property_lookup_table, sym);
#endif
/*
TODO: type checking
*/
SCM s = scm_sloppy_assq (sym, mutable_property_alist_);
if (s != SCM_BOOL_F)
return scm_cdr (s);
s = scm_sloppy_assq (sym, immutable_property_alist_);
return (s == SCM_BOOL_F) ? SCM_EOL : scm_cdr (s);
}
/* We don't (yet) instrument probs */
void
Prob::instrumented_set_property (SCM sym, SCM val, const char*, int, const char*)
{
internal_set_property (sym, val);
}
void
Prob::internal_set_property (SCM sym, SCM val)
{
if (do_internal_type_checking_global)
type_check_assignment (sym, val);
mutable_property_alist_ = scm_assq_set_x (mutable_property_alist_, sym, val);
}
void
Prob::type_check_assignment (SCM sym, SCM val) const
{
(void) sym;
(void) val;
}
SCM
Prob::get_property_alist (bool m) const
{
return (m) ? mutable_property_alist_ : immutable_property_alist_;
}
string
Prob::name () const
{
SCM nm = get_property ("name");
if (scm_is_symbol (nm))
return ly_symbol2string (nm);
else
return this->class_name ();
}
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