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check if layout-demand-handler exists every time it is called

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This commit is contained in:
Leon Henrik Plickat
2023-12-29 11:38:26 +01:00
parent 098f15860c
commit 2e409596cf
1 changed files with 24 additions and 9 deletions
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33
riverguile.c
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@@ -56,12 +56,33 @@ static bool scm2uint(uint32_t *x, SCM s)
return true;
}
/**
* Try to find a variable named 'name' and returns it, otherwise #f is returned.
*/
static SCM scm_c_get_variable (const char *name)
{
return scm_module_variable(
scm_current_module(),
scm_string_to_symbol(
scm_from_utf8_string(name)
)
);
}
static void *call_layout_demand_handler (void *data)
{
struct Layout_demand_parameters *params = (struct Layout_demand_parameters *)data;
SCM layout_demand_handler = scm_c_get_variable("layout-demand-handler");
if ( scm_is_false(layout_demand_handler) == 1 )
{
ret = EXIT_FAILURE;
loop = false;
return (void *)"ERROR: layout-demand-handler no longer exists.\n";
}
SCM call_result = scm_call_3(
scm_variable_ref(scm_c_lookup("layout-demand-handler")),
scm_variable_ref(layout_demand_handler),
scm_from_uint32(params->view_count),
scm_from_uint32(params->width),
scm_from_uint32(params->height)
@@ -320,14 +341,8 @@ static void *load_script (void *data)
scm_primitive_load_path(scm_from_utf8_string(path));
/* Check if the handler has been defined. */
SCM variable = scm_module_variable(
scm_current_module(),
scm_string_to_symbol(
scm_from_utf8_string("layout-demand-handler")
)
);
if ( scm_is_false(variable) == 1 )
SCM layout_demand_handler = scm_c_get_variable("layout-demand-handler");
if ( scm_is_false(layout_demand_handler) == 1 )
{
ret = EXIT_FAILURE;
loop = false;