Lua 2.22.2

1 files changed, 79 insertions, 0 deletions

diff --git a/src/func.c b/src/func.c
new file mode 100644
index 00000000..2982f661
--- /dev/null
+++ b/src/func.c
@@ -0,0 +1,79 @@
+#include <stdio.h>
+
+#include "luadebug.h"
+#include "table.h"
+#include "mem.h"
+#include "func.h"
+#include "opcode.h"
+
+static TFunc *function_root = NULL;
+
+
+/*
+** Insert function in list for GC
+*/
+void luaI_insertfunction (TFunc *f)
+{
+  lua_pack();
+  f->next = function_root;
+  function_root = f;
+  f->marked = 0;
+}
+
+
+/*
+** Free function
+*/
+static void freefunc (TFunc *f)
+{
+  luaI_free (f->code);
+  luaI_free (f);
+}
+
+/*
+** Garbage collection function.
+** This function traverse the function list freeing unindexed functions
+*/
+Long luaI_funccollector (void)
+{
+  TFunc *curr = function_root;
+  TFunc *prev = NULL;
+  Long counter = 0;
+  while (curr)
+  {
+    TFunc *next = curr->next;
+    if (!curr->marked)
+    {
+      if (prev == NULL)
+        function_root = next;
+      else
+        prev->next = next;
+      freefunc (curr);
+      ++counter;
+    }
+    else
+    {
+      curr->marked = 0;
+      prev = curr;
+    } 
+    curr = next;
+  }
+  return counter;
+}
+
+
+void lua_funcinfo (lua_Object func, char **filename, int *linedefined)
+{
+  Object *f = luaI_Address(func);
+  if (f->tag == LUA_T_MARK || f->tag == LUA_T_FUNCTION)
+  {
+    *filename = f->value.tf->fileName;
+    *linedefined = f->value.tf->lineDefined;
+  }
+  else if (f->tag == LUA_T_CMARK || f->tag == LUA_T_CFUNCTION)
+  {
+    *filename = "(C)";
+    *linedefined = -1;
+  }
+}
+