Merge pull request #1187 from h2so5/mruby-proc-ext

Add mruby-proc-ext

1 files changed, 97 insertions, 0 deletions

diff --git a/mrbgems/mruby-proc-ext/src/proc.c b/mrbgems/mruby-proc-ext/src/proc.c
new file mode 100644
index 000000000..cdc85336e
--- /dev/null
+++ b/mrbgems/mruby-proc-ext/src/proc.c
@@ -0,0 +1,97 @@
+#include "mruby.h"
+#include "mruby/proc.h"
+#include "mruby/array.h"
+#include "mruby/string.h"
+
+static mrb_value
+mrb_proc_lambda(mrb_state *mrb, mrb_value self)
+{
+  struct RProc *p = mrb_proc_ptr(self);
+  return mrb_bool_value(MRB_PROC_STRICT_P(p));
+}
+
+static mrb_value
+mrb_proc_source_location(mrb_state *mrb, mrb_value self)
+{
+  struct RProc *p = mrb_proc_ptr(self);
+
+  if (MRB_PROC_CFUNC_P(p)) {
+    return mrb_nil_value();
+  }
+  else {
+    mrb_irep *irep = p->body.irep;
+    mrb_value filename = mrb_nil_value();
+    mrb_value lines = mrb_nil_value();
+
+    if (irep->filename) filename = mrb_str_new_cstr(mrb, irep->filename);
+    if (irep->lines)    lines = mrb_fixnum_value(*irep->lines);
+
+    return mrb_assoc_new(mrb, filename, lines);
+  }
+}
+
+static mrb_value
+mrb_proc_inspect(mrb_state *mrb, mrb_value self)
+{
+  struct RProc *p = mrb_proc_ptr(self);
+  mrb_value str = mrb_str_new_cstr(mrb, "#<Proc:");
+  mrb_str_concat(mrb, str, mrb_ptr_to_str(mrb, mrb_voidp(self)));
+
+  if (!MRB_PROC_CFUNC_P(p)) {
+    mrb_irep *irep = p->body.irep;
+    mrb_str_cat_cstr(mrb, str, "@");   
+
+    if (irep->filename) {
+      mrb_str_cat_cstr(mrb, str, irep->filename);
+    }
+    else {
+      mrb_str_cat_cstr(mrb, str, "-");
+    }
+    mrb_str_cat_cstr(mrb, str, ":");
+
+    if (irep->lines) {
+      mrb_str_append(mrb, str, mrb_fixnum_value(*irep->lines));
+    }
+    else {
+      mrb_str_cat_cstr(mrb, str, "-");      
+    }
+  }
+
+  if (MRB_PROC_STRICT_P(p)) {
+    mrb_str_cat_cstr(mrb, str, " (lambda)");
+  }
+
+  mrb_str_cat_cstr(mrb, str, ">");
+  return str;
+}
+
+static mrb_value
+mrb_kernel_proc(mrb_state *mrb, mrb_value self)
+{
+  mrb_value blk;
+
+  mrb_get_args(mrb, "&", &blk);
+  if (mrb_nil_p(blk)) {
+    mrb_raise(mrb, E_ARGUMENT_ERROR, "tried to create Proc object without a block");
+  }
+
+  return blk;
+}
+
+void
+mrb_mruby_proc_ext_gem_init(mrb_state* mrb)
+{
+  struct RClass *p = mrb->proc_class;
+  mrb_define_method(mrb, p, "lambda?",         mrb_proc_lambda,          ARGS_NONE());
+  mrb_define_method(mrb, p, "source_location", mrb_proc_source_location, ARGS_NONE());
+  mrb_define_method(mrb, p, "to_s",            mrb_proc_inspect,         ARGS_NONE());
+  mrb_define_method(mrb, p, "inspect",         mrb_proc_inspect,         ARGS_NONE());
+
+  mrb_define_class_method(mrb, mrb->kernel_module, "proc", mrb_kernel_proc, ARGS_NONE());
+  mrb_define_method(mrb, mrb->kernel_module,       "proc", mrb_kernel_proc, ARGS_NONE());
+}
+
+void
+mrb_mruby_proc_ext_gem_final(mrb_state* mrb)
+{
+}