ast-model.h

   1
   2 /*
   3  * ast-model.h
   4  *
   5  * Copyright (C) 2010 Christopher Li.
   6  *
   7  */
   8
   9 #ifndef _ast_model_h_
  10 #define _ast_model_h_
  11
  12 #include <stdint.h>
  13 #include <gtk/gtk.h>
  14 #include "lib.h"
  15
  16 #define AST_TYPE_NODE                  (ast_get_type ())
  17 #define AST_NODE(obj)                  (G_TYPE_CHECK_INSTANCE_CAST ((obj), AST_TYPE_NODE, AstNode))
  18 #define AST_NODE_CLASS(klass)          (G_TYPE_CHECK_CLASS_CAST ((klass),  AST_TYPE_NODE, AstNodeClass))
  19 #define AST_IS_NODE(obj)               (G_TYPE_CHECK_INSTANCE_TYPE ((obj), AST_TYPE_NODE))
  20 #define AST_IS_NODE_CLASS(klass)       (G_TYPE_CHECK_CLASS_TYPE ((klass),  AST_TYPE_NODE))
  21 #define AST_NODE_GET_CLASS(obj)        (G_TYPE_INSTANCE_GET_CLASS ((obj),  AST_TYPE_NODE, AstNodeClass))
  22
  23 enum
  24 {
  25         AST_COL_RECORD = 0,
  26         AST_COL_NAME,
  27         AST_N_COLUMNS,
  28 } ;
  29
  30
  31 typedef struct AstNode AstNode;
  32 typedef struct AstNodeClass AstNodeClass;
  33
  34
  35
  36 /* AstNode: this structure contains everything we need for our
  37  *             model implementation. You can add extra fields to
  38  *             this structure, e.g. hashtables to quickly lookup
  39  *             rows or whatever else you might need, but it is
  40  *             crucial that 'parent' is the first member of the
  41  *             structure.                                          */
  42
  43 struct AstNode
  44 {
  45         GObject         base;      /* this MUST be the first member */
  46
  47         AstNode *parent;
  48         int index;
  49         const gchar *text;
  50         void (*inspect)(struct AstNode* node);
  51         void *ptr;
  52         GArray *childnodes;
  53         gint stamp;
  54 };
  55
  56
  57
  58 /* AstNodeClass: more boilerplate GObject stuff */
  59
  60 struct AstNodeClass
  61 {
  62         GObjectClass base_class;
  63 };
  64
  65
  66 GType ast_get_type(void);
  67 AstNode* ast_new(AstNode *parent, int index, const char *prefix, void *ptr, void (*expand)(AstNode*));
  68
  69
  70 static inline
  71 void ast_append_child(AstNode *parent, const char *text,
  72                            void *ptr, void (*inspect)(AstNode*))
  73 {
  74         if (ptr) {
  75                 AstNode *child = ast_new(parent, parent->childnodes->len,
  76                                                 text, ptr, inspect);
  77                 g_array_append_val(parent->childnodes, child);
  78         }
  79 }
  80
  81 static inline
  82 void ast_append_attribute(AstNode *parent, const char *text)
  83 {
  84         AstNode *child = ast_new(parent, parent->childnodes->len, text, NULL, NULL);
  85         g_array_append_val(parent->childnodes, child);
  86 }
  87
  88 #endif /* _ast_h_*/