1 files changed, 90 insertions, 0 deletions
diff --git a/spec/ruby/optional/capi/ext/range_spec.c b/spec/ruby/optional/capi/ext/range_spec.c
new file mode 100644
index 0000000000..9faed3e5ee
--- /dev/null
+++ b/spec/ruby/optional/capi/ext/range_spec.c
@@ -0,0 +1,90 @@
+#include "ruby.h"
+#include "rubyspec.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+VALUE range_spec_rb_range_new(int argc, VALUE* argv, VALUE self) {
+  int exclude_end = 0;
+  if (argc == 3) {
+    exclude_end = RTEST(argv[2]);
+  }
+  return rb_range_new(argv[0], argv[1], exclude_end);
+}
+
+VALUE range_spec_rb_range_values(VALUE self, VALUE range) {
+  VALUE beg;
+  VALUE end;
+  int excl;
+  VALUE ary = rb_ary_new();
+  rb_range_values(range, &beg, &end, &excl);
+  rb_ary_store(ary, 0, beg);
+  rb_ary_store(ary, 1, end);
+  rb_ary_store(ary, 2, excl ? Qtrue : Qfalse);
+  return ary;
+}
+
+VALUE range_spec_rb_range_beg_len(VALUE self, VALUE range, VALUE lenv, VALUE errv) {
+  long begp = 0;
+  long lenp = 0;
+  long len = FIX2LONG(lenv);
+  int err = FIX2INT(errv);
+  VALUE ary = rb_ary_new();
+  VALUE res = rb_range_beg_len(range, &begp, &lenp, len, err);
+  rb_ary_store(ary, 0, LONG2FIX(begp));
+  rb_ary_store(ary, 1, LONG2FIX(lenp));
+  rb_ary_store(ary, 2, res);
+  return ary;
+}
+
+VALUE range_spec_rb_arithmetic_sequence_extract(VALUE self, VALUE object) {
+  VALUE ary = rb_ary_new();
+  rb_arithmetic_sequence_components_t components;
+
+  int status = rb_arithmetic_sequence_extract(object, &components);
+
+  if (!status) {
+      rb_ary_store(ary, 0, LONG2FIX(status));
+      return ary;
+  }
+
+  rb_ary_store(ary, 0, LONG2FIX(status));
+  rb_ary_store(ary, 1, components.begin);
+  rb_ary_store(ary, 2, components.end);
+  rb_ary_store(ary, 3, components.step);
+  rb_ary_store(ary, 4, components.exclude_end ? Qtrue : Qfalse);
+  return ary;
+}
+
+VALUE range_spec_rb_arithmetic_sequence_beg_len_step(VALUE self, VALUE aseq, VALUE lenv, VALUE errv) {
+  long begp = 0;
+  long lenp = 0;
+  long stepp = 0;
+
+  long len = FIX2LONG(lenv);
+  int err = FIX2INT(errv);
+
+  VALUE success = rb_arithmetic_sequence_beg_len_step(aseq, &begp, &lenp, &stepp, len, err);
+
+  VALUE ary = rb_ary_new();
+  rb_ary_store(ary, 0, success);
+  rb_ary_store(ary, 1, LONG2FIX(begp));
+  rb_ary_store(ary, 2, LONG2FIX(lenp));
+  rb_ary_store(ary, 3, LONG2FIX(stepp));
+
+  return ary;
+}
+
+void Init_range_spec(void) {
+  VALUE cls = rb_define_class("CApiRangeSpecs", rb_cObject);
+  rb_define_method(cls, "rb_range_new", range_spec_rb_range_new, -1);
+  rb_define_method(cls, "rb_range_values", range_spec_rb_range_values, 1);
+  rb_define_method(cls, "rb_range_beg_len", range_spec_rb_range_beg_len, 3);
+  rb_define_method(cls, "rb_arithmetic_sequence_extract", range_spec_rb_arithmetic_sequence_extract, 1);
+  rb_define_method(cls, "rb_arithmetic_sequence_beg_len_step", range_spec_rb_arithmetic_sequence_beg_len_step, 3);
+}
+
+#ifdef __cplusplus
+}
+#endif