kc3-lang/kc3/libc3/frame.c

• Show log

  Commit

• Hash : 8021d329
  Author : Thomas de Grivel
  Date : 2023-08-07T23:05:31
  

  wip

Download

• libc3/frame.c

• /* c3
   * Copyright 2022,2023 kmx.io <contact@kmx.io>
   *
   * Permission is hereby granted to use this software granted the above
   * copyright notice and this permission paragraph are included in all
   * copies and substantial portions of this software.
   *
   * THIS SOFTWARE IS PROVIDED "AS-IS" WITHOUT ANY GUARANTEE OF
   * PURPOSE AND PERFORMANCE. IN NO EVENT WHATSOEVER SHALL THE
   * AUTHOR BE CONSIDERED LIABLE FOR THE USE AND PERFORMANCE OF
   * THIS SOFTWARE.
   */
  #include <assert.h>
  #include <err.h>
  #include <stdlib.h>
  #include "binding.h"
  #include "frame.h"
  #include "list.h"
  
  void frame_binding_new (s_frame *frame, const s_sym *name,
                          const s_tag *value)
  {
    frame->bindings = binding_new(name, value, frame->bindings);
  }
  
  s_frame * frame_clean (s_frame *frame)
  {
    s_frame *next;
    assert(frame);
    next = frame->next;
    binding_delete_all(frame->bindings);
    return next;
  }
  
  s_frame * frame_delete (s_frame *frame)
  {
    s_frame *next = NULL;
    if (frame) {
      next = frame_clean(frame);
      free(frame);
    }
    return next;
  }
  
  void frame_delete_all (s_frame *frame)
  {
    while (frame)
      frame = frame_delete(frame);
  }
  
  const s_tag * frame_get (const s_frame *frame, const s_sym *sym)
  {
    const s_tag *tag;
    while (frame) {
      if ((tag = binding_get(frame->bindings, sym)))
        return tag;
      frame = frame->next;
    }
    return NULL;
  }
  
  s_frame * frame_init (s_frame *frame, s_frame *next)
  {
    assert(frame);
    frame->bindings = NULL;
    frame->next = next;
    return frame;
  }
  
  s_frame * frame_new (s_frame *next)
  {
    s_frame *frame;
    if (! (frame = malloc(sizeof(s_frame))))
      errx(1, "frame_new: out of memory");
    return frame_init(frame, next);
  }
  

Download