1 files changed, 78 insertions, 0 deletions
diff --git a/mrbgems/mruby-bin-debugger/tools/mrdb/apiprint.c b/mrbgems/mruby-bin-debugger/tools/mrdb/apiprint.c
new file mode 100755
index 000000000..23b321f7c
--- /dev/null
+++ b/mrbgems/mruby-bin-debugger/tools/mrdb/apiprint.c
@@ -0,0 +1,78 @@
+/*
+** apiprint.c
+**
+*/
+
+#include <string.h>
+#include "mrdb.h"
+#include "mruby/value.h"
+#include "mruby/class.h"
+#include "mruby/compile.h"
+#include "mruby/error.h"
+#include "mruby/numeric.h"
+#include "mruby/string.h"
+#include "apiprint.h"
+
+static void
+mrdb_check_syntax(mrb_state *mrb, mrb_debug_context *dbg, const char *expr, size_t len)
+{
+  mrbc_context *c;
+
+  c = mrbc_context_new(mrb);
+  c->no_exec = TRUE;
+  c->capture_errors = TRUE;
+  c->filename = (char*)dbg->prvfile;
+  c->lineno = dbg->prvline;
+
+  /* Load program */
+  mrb_load_nstring_cxt(mrb, expr, len, c);
+
+  mrbc_context_free(mrb, c);
+}
+
+mrb_value
+mrb_debug_eval(mrb_state *mrb, mrb_debug_context *dbg, const char *expr, size_t len, mrb_bool *exc)
+{
+  void *tmp;
+  mrb_value ruby_code;
+  mrb_value s;
+  mrb_value v;
+  mrb_value recv;
+
+  /* disable code_fetch_hook */
+  tmp = mrb->code_fetch_hook;
+  mrb->code_fetch_hook = NULL;
+
+  mrdb_check_syntax(mrb, dbg, expr, len);
+  if (mrb->exc) {
+    v = mrb_obj_value(mrb->exc);
+    mrb->exc = 0;
+  }
+  else {
+    /*
+     * begin
+     *   expr
+     * rescue => e
+     *   e
+     * end
+     */
+    ruby_code = mrb_str_new_cstr(mrb, "begin\n");
+    ruby_code = mrb_str_cat(mrb, ruby_code, expr, len);
+    ruby_code = mrb_str_cat_cstr(mrb, ruby_code, "\nrescue => e\ne\nend");
+
+    recv = dbg->regs[0];
+
+    v =  mrb_funcall(mrb, recv, "instance_eval", 1, ruby_code);
+  }
+
+  if (exc) {
+    *exc = mrb_obj_is_kind_of(mrb, v, mrb->eException_class);
+  }
+
+  s = mrb_funcall(mrb, v, "inspect", 0);
+
+  /* enable code_fetch_hook */
+  mrb->code_fetch_hook = tmp;
+
+  return s;
+}