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#include "liquid.h"
#include "context.h"
static ID id_has_key, id_aref, id_fetch, id_to_liquid_value;
VALUE variable_lookup_key(VALUE context, VALUE object, VALUE key, bool is_command)
{
if (rb_obj_class(key) != rb_cString) {
VALUE key_value = rb_check_funcall(key, id_to_liquid_value, 0, 0);
if (key_value != Qundef) {
key = key_value;
}
}
if (rb_respond_to(object, id_aref) && (
(rb_respond_to(object, id_has_key) && rb_funcall(object, id_has_key, 1, key)) ||
(rb_obj_is_kind_of(key, rb_cInteger) && rb_respond_to(object, id_fetch))
)) {
VALUE next_object = rb_funcall(object, id_aref, 1, key);
next_object = materialize_proc(context, object, key, next_object);
return value_to_liquid_and_set_context(next_object, context);
}
if (is_command) {
Check_Type(key, T_STRING);
ID intern_key = rb_intern(RSTRING_PTR(key));
if (rb_respond_to(object, intern_key)) {
VALUE next_object = rb_funcall(object, intern_key, 0);
return value_to_liquid_and_set_context(next_object, context);
}
}
context_maybe_raise_undefined_variable(context, key);
return Qnil;
}
void liquid_define_variable_lookup(void)
{
id_has_key = rb_intern("key?");
id_aref = rb_intern("[]");
id_fetch = rb_intern("fetch");
id_to_liquid_value = rb_intern("to_liquid_value");
}
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