static PyObject *
pyscm_PySCM_call(pyscm_PySCMObject *self, PyObject *args, PyObject *kwargs)
{
/* Return the result of calling self with argument args */
SCM shandle = scm_hashv_get_handle(pyscm_registration_hash,scm_long2num(self->ob_scm_index));
if (SCM_BOOLP(shandle) && SCM_EQ_P(SCM_BOOL_F,shandle)) {
Py_FatalError("PySCM object lost its associated SCM object"); // NOT COVERED BY TESTS
}
// Now:
// SCM_CADR(shandle) is the SCM object itself
// SCM_CDDR(shandle) is the stemplate.
if (pyguile_verbosity_test(PYGUILE_VERBOSE_PYSCM)) {
scm_simple_format(scm_current_output_port(),scm_makfrom0str("# pyscm_PySCM_call: calling ~S with args=~S and keywords=~S; stemplate=~S\n"),scm_list_4(SCM_CADR(shandle),verbosity_repr(args),verbosity_repr(kwargs),SCM_CDDR(shandle)));
}
SCM sapply_func = GET_APPLY_FUNC(SCM_CDDR(shandle));
if (SCM_EQ_P(SCM_EOL,sapply_func)) {
if (pyguile_verbosity_test(PYGUILE_VERBOSE_PYSCM)) {
scm_simple_format(scm_current_output_port(),scm_makfrom0str("# pyscm_PySCM_call: raising exceptions.TypeError due to \"PySCM wraps a non-callable SCM\"\n"),SCM_EOL);
}
PyErr_SetString(PyExc_TypeError, "PySCM wraps a non-callable SCM");
return(NULL);
}
// Process arguments.
SCM sargs_template = GET_P2G_POSITIONAL_ARGS_TEMPLATE(SCM_CDDR(shandle));
SCM skwargs_template = GET_P2G_KEYWORD_ARGS_TEMPLATE(SCM_CDDR(shandle));
/*if (logical_xor(SCM_EQ_P(SCM_EOL,sargs_template),(NULL==args))
|| logical_xor(SCM_EQ_P(SCM_EOL,skwargs_template),(NULL==kwargs)))*/
// The following allows template to exist without actual arguments.
if ((SCM_EQ_P(SCM_EOL,sargs_template) && (NULL != args))
|| (SCM_EQ_P(SCM_EOL,skwargs_template) && (NULL != kwargs))) {
if (pyguile_verbosity_test(PYGUILE_VERBOSE_PYSCM)) {
scm_simple_format(scm_current_output_port(),scm_makfrom0str("# pyscm_PySCM_call: raising exceptions.TypeError due to \"wrapped SCM does not take some of the provided arguments\"\n"),SCM_EOL);
}
PyErr_SetString(PyExc_TypeError, "wrapped SCM does not take some of the provided arguments");
return(NULL);
}
SCM sargs = SCM_EQ_P(SCM_EOL,sargs_template) || (NULL == args)
? SCM_EOL : p2g_apply(args,sargs_template);
SCM skwargs = SCM_EQ_P(SCM_EOL,skwargs_template) || (NULL == kwargs)
? SCM_EOL : p2g_apply(kwargs,skwargs_template);
SCM sresult = scm_apply(sapply_func,scm_list_2(SCM_CADR(shandle),scm_list_2(sargs,skwargs)),SCM_EOL);
SCM sresult_template = GET_G2P_RESULT_TEMPLATE(SCM_CDDR(shandle));
if (SCM_EQ_P(SCM_EOL,sresult_template)) {
Py_RETURN_NONE;
}
else {
return(g2p_apply(sresult,sresult_template));
}
}
// Does not include the template object in the string representation.
static PyObject *
pyscm_PySCM_str(pyscm_PySCMObject *self)
{
if (0 == self->ob_scm_index) {
return(PyString_FromString("<no SCM association>"));
}
SCM shandle = scm_hashv_get_handle(pyscm_registration_hash,scm_long2num(self->ob_scm_index));
if (SCM_BOOLP(shandle) && SCM_EQ_P(SCM_BOOL_F,shandle)) {
Py_FatalError("PySCM object lost its associated SCM object");
}
SCM sstr = scm_object_to_string(SCM_CADR(shandle),scm_variable_ref(scm_c_lookup("write")));
PyObject *pstr = PyString_FromStringAndSize(SCM_STRING_CHARS(sstr),SCM_STRING_LENGTH(sstr));
return(pstr); // possibly NULL.
}
// Common code for pyscm_PySCM_getattr() and pyscm_PySCM_setattr():
// Retrieve and return the 4-element vector corresponding to desired
// attribute of the pyscm_PySCMObject.
// Perform also validity checking and raise Python exception if
// invalid.
// Since it is needed later, also the SCM object, corresponding to the
// pyscm_PySCMObject, is returned to the caller, put into 2-element
// list together with the #:-keyword corresponding to name.
static SCM
retrieve_sattr_vector(pyscm_PySCMObject *self, char *name, SCM *sobj_keyword)
{
SCM shandle = scm_hashv_get_handle(pyscm_registration_hash,scm_long2num(self->ob_scm_index));
if (SCM_BOOLP(shandle) && SCM_EQ_P(SCM_BOOL_F,shandle)) {
Py_FatalError("PySCM object lost its associated SCM object");
}
// Now:
// SCM_CADR(shandle) is the SCM object itself
// SCM_CDDR(shandle) is the stemplate.
SCM sattrshash = GET_ATTRS_HASH(SCM_CDDR(shandle));
if (SCM_EQ_P(SCM_BOOL_F,sattrshash)) {
PyErr_SetString(PyExc_AttributeError, name);
return(SCM_UNDEFINED); // Error return
}
// The object has attributes. Build the hash key (a keyword).
size_t nlength = strlen(name);
char *dashstr = malloc(nlength+2);
dashstr[0] = '-';
dashstr[1] = '\0';
strncat(dashstr,name,nlength);
SCM skeyword = scm_make_keyword_from_dash_symbol(scm_str2symbol(dashstr));
// !!! Do we have to free dashstr?
// !!! Similar code is used also in pytoguile.c - review it.
SCM sattr_vector_handle = scm_hashv_get_handle(sattrshash,skeyword);
if (SCM_EQ_P(SCM_BOOL_F,sattr_vector_handle)) {
// Missing attribute. How to deal with it?
sattr_vector_handle = scm_hashv_get_handle(sattrshash,SCM_BOOL_F);
if (SCM_EQ_P(SCM_BOOL_F,sattr_vector_handle)) {
// Hash value corresponding to key #f is itself another #f, which
// means that the object does not wish to exhibit to Python
// unknown attributes.
PyErr_SetString(PyExc_AttributeError, name);
return(SCM_UNDEFINED); // Error return
}
// Otherwise, we'll use the hash value corresponding to #f as
// a catch-all for all attributes not otherwise defined.
}
*sobj_keyword = scm_list_2(SCM_CADR(shandle),skeyword);
return(SCM_CDR(sattr_vector_handle));
}
/*! \brief Add a component to the page.
* \par Function Description
* Adds a component <B>scm_comp_name</B> to the schematic, at
* position (<B>scm_x</B>, <B>scm_y</B>), with some properties set by
* the parameters:
* \param [in] scm_x Coordinate X of the symbol.
* \param [in] scm_y Coordinate Y of the symbol.
* \param [in] angle Angle of rotation of the symbol.
* \param [in] selectable True if the symbol is selectable, false otherwise.
* \param [in] mirror True if the symbol is mirrored, false otherwise.
* If scm_comp_name is a scheme empty list, SCM_BOOL_F, or an empty
* string (""), then g_add_component returns SCM_BOOL_F without writing
* to the log.
* \return TRUE if the component was added, FALSE otherwise.
*
*/
SCM g_add_component(SCM page_smob, SCM scm_comp_name, SCM scm_x, SCM scm_y,
SCM scm_angle, SCM scm_selectable, SCM scm_mirror)
{
TOPLEVEL *toplevel;
PAGE *page;
gboolean selectable, mirror;
gchar *comp_name;
int x, y, angle;
OBJECT *new_obj;
const CLibSymbol *clib;
/* Return if scm_comp_name is NULL (an empty list) or scheme's FALSE */
if (SCM_NULLP(scm_comp_name) ||
(SCM_BOOLP(scm_comp_name) && !(SCM_NFALSEP(scm_comp_name))) ) {
return SCM_BOOL_F;
}
/* Get toplevel and the page */
SCM_ASSERT (g_get_data_from_page_smob (page_smob, &toplevel, &page),
page_smob, SCM_ARG1, "add-component-at-xy");
/* Check the arguments */
SCM_ASSERT (scm_is_string(scm_comp_name), scm_comp_name,
SCM_ARG2, "add-component-at-xy");
SCM_ASSERT ( scm_is_integer(scm_x), scm_x,
SCM_ARG3, "add-component-at-xy");
SCM_ASSERT ( scm_is_integer(scm_y), scm_y,
SCM_ARG4, "add-component-at-xy");
SCM_ASSERT ( scm_is_integer(scm_angle), scm_angle,
SCM_ARG5, "add-component-at-xy");
SCM_ASSERT ( scm_boolean_p(scm_selectable), scm_selectable,
SCM_ARG6, "add-component-at-xy");
SCM_ASSERT ( scm_boolean_p(scm_mirror), scm_mirror,
SCM_ARG7, "add-component-at-xy");
/* Get the parameters */
comp_name = SCM_STRING_CHARS(scm_comp_name);
x = scm_to_int(scm_y);
y = scm_to_int(scm_y);
angle = scm_to_int(scm_angle);
selectable = SCM_NFALSEP(scm_selectable);
mirror = SCM_NFALSEP(scm_mirror);
SCM_ASSERT (comp_name, scm_comp_name,
SCM_ARG2, "add-component-at-xy");
if (strcmp(comp_name, "") == 0) {
return SCM_BOOL_F;
}
clib = s_clib_get_symbol_by_name (comp_name);
new_obj = o_complex_new (toplevel, 'C', DEFAULT_COLOR, x, y, angle, mirror,
clib, comp_name, selectable);
s_page_append_list (page, o_complex_promote_attribs (toplevel, new_obj));
s_page_append (page, new_obj);
/*
* For now, do not redraw the newly added complex, since this might cause
* flicker if you are zoom/panning right after this function executes
*/
#if 0
/* Now the new component should be added to the object's list and
drawn in the screen */
o_invalidate (toplevel, new_object);
#endif
return SCM_BOOL_T;
}
int scm_is_bool(SCM x) {
return SCM_BOOLP (x);
}
