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| 1 | +// Copyright (c) Epic Games Tools |
| 2 | +// Licensed under the MIT license (https://opensource.org/license/mit/) |
| 3 | + |
| 4 | +#ifndef CONFIG_H |
| 5 | +#define CONFIG_H |
| 6 | + |
| 7 | +//////////////////////////////// |
| 8 | +//~ rjf: IDs |
| 9 | + |
| 10 | +typedef U64 CFG_ID; |
| 11 | + |
| 12 | +typedef struct CFG_IDNode CFG_IDNode; |
| 13 | +struct CFG_IDNode |
| 14 | +{ |
| 15 | + CFG_IDNode *next; |
| 16 | + CFG_ID v; |
| 17 | +}; |
| 18 | + |
| 19 | +typedef struct CFG_IDList CFG_IDList; |
| 20 | +struct CFG_IDList |
| 21 | +{ |
| 22 | + CFG_IDNode *first; |
| 23 | + CFG_IDNode *last; |
| 24 | + U64 count; |
| 25 | +}; |
| 26 | + |
| 27 | +//////////////////////////////// |
| 28 | +//~ rjf: Tree Types |
| 29 | + |
| 30 | +typedef struct CFG_Node CFG_Node; |
| 31 | +struct CFG_Node |
| 32 | +{ |
| 33 | + CFG_Node *first; |
| 34 | + CFG_Node *last; |
| 35 | + CFG_Node *next; |
| 36 | + CFG_Node *prev; |
| 37 | + CFG_Node *parent; |
| 38 | + CFG_ID id; |
| 39 | + String8 string; |
| 40 | +}; |
| 41 | + |
| 42 | +typedef struct CFG_NodePtrNode CFG_NodePtrNode; |
| 43 | +struct CFG_NodePtrNode |
| 44 | +{ |
| 45 | + CFG_NodePtrNode *next; |
| 46 | + CFG_NodePtrNode *prev; |
| 47 | + CFG_Node *v; |
| 48 | +}; |
| 49 | + |
| 50 | +typedef struct CFG_NodePtrSlot CFG_NodePtrSlot; |
| 51 | +struct CFG_NodePtrSlot |
| 52 | +{ |
| 53 | + CFG_NodePtrNode *first; |
| 54 | + CFG_NodePtrNode *last; |
| 55 | +}; |
| 56 | + |
| 57 | +typedef struct CFG_NodePtrList CFG_NodePtrList; |
| 58 | +struct CFG_NodePtrList |
| 59 | +{ |
| 60 | + CFG_NodePtrNode *first; |
| 61 | + CFG_NodePtrNode *last; |
| 62 | + U64 count; |
| 63 | +}; |
| 64 | + |
| 65 | +typedef struct CFG_NodePtrArray CFG_NodePtrArray; |
| 66 | +struct CFG_NodePtrArray |
| 67 | +{ |
| 68 | + CFG_Node **v; |
| 69 | + U64 count; |
| 70 | +}; |
| 71 | + |
| 72 | +typedef struct CFG_NodeRec CFG_NodeRec; |
| 73 | +struct CFG_NodeRec |
| 74 | +{ |
| 75 | + CFG_Node *next; |
| 76 | + S32 push_count; |
| 77 | + S32 pop_count; |
| 78 | +}; |
| 79 | + |
| 80 | +//////////////////////////////// |
| 81 | +//~ rjf: Config State Bundles |
| 82 | + |
| 83 | +typedef struct CFG_Ctx CFG_Ctx; |
| 84 | +struct CFG_Ctx |
| 85 | +{ |
| 86 | + CFG_Node *root; |
| 87 | + U64 id_slots_count; |
| 88 | + CFG_NodePtrSlot *id_slots; |
| 89 | + U64 change_gen; |
| 90 | + CFG_ID last_accessed_id; |
| 91 | + CFG_Node *last_accessed; |
| 92 | +}; |
| 93 | + |
| 94 | +typedef struct CFG_State CFG_State; |
| 95 | +struct CFG_State |
| 96 | +{ |
| 97 | + Arena *arena; |
| 98 | + CFG_Node *free; |
| 99 | + CFG_NodePtrNode *free_id_node; |
| 100 | + U64 id_gen; |
| 101 | + CFG_Ctx ctx; |
| 102 | +}; |
| 103 | + |
| 104 | +//////////////////////////////// |
| 105 | +//~ rjf: Globals |
| 106 | + |
| 107 | +read_only global CFG_Node cfg_nil_node = |
| 108 | +{ |
| 109 | + &cfg_nil_node, |
| 110 | + &cfg_nil_node, |
| 111 | + &cfg_nil_node, |
| 112 | + &cfg_nil_node, |
| 113 | + &cfg_nil_node, |
| 114 | +}; |
| 115 | + |
| 116 | +thread_static CFG_Ctx *cfg_ctx = 0; |
| 117 | + |
| 118 | +//////////////////////////////// |
| 119 | +//~ rjf: ID Functions |
| 120 | + |
| 121 | +internal void cfg_id_list_push(Arena *arena, CFG_IDList *list, CFG_ID id); |
| 122 | +internal CFG_IDList cfg_id_list_copy(Arena *arena, CFG_IDList *src); |
| 123 | + |
| 124 | +//////////////////////////////// |
| 125 | +//~ rjf: Node Pointer Data Structure Functions |
| 126 | + |
| 127 | +internal void cfg_node_ptr_list_push(Arena *arena, CFG_NodePtrList *list, CFG_Node *node); |
| 128 | +internal void cfg_node_ptr_list_push_front(Arena *arena, CFG_NodePtrList *list, CFG_Node *node); |
| 129 | +#define cfg_node_ptr_list_first(list) ((list)->count ? (list)->first->v : &cfg_nil_node) |
| 130 | +#define cfg_node_ptr_list_last(list) ((list)->count ? (list)->last->v : &cfg_nil_node) |
| 131 | +internal CFG_NodePtrArray cfg_node_ptr_array_from_list(Arena *arena, CFG_NodePtrList *list); |
| 132 | + |
| 133 | +//////////////////////////////// |
| 134 | +//~ rjf: Config Reading Functions |
| 135 | + |
| 136 | +//- rjf: context selection |
| 137 | +internal void cfg_ctx_select(CFG_Ctx *ctx); |
| 138 | + |
| 139 | +//- rjf: tree navigations |
| 140 | +internal CFG_Node *cfg_node_from_id(CFG_ID id); |
| 141 | +internal CFG_Node *cfg_node_child_from_string(CFG_Node *parent, String8 string); |
| 142 | +internal CFG_Node *cfg_node_child_from_string_or_parent(CFG_Node *parent, String8 string); |
| 143 | +internal CFG_NodePtrList cfg_node_child_list_from_string(Arena *arena, CFG_Node *parent, String8 string); |
| 144 | +internal CFG_NodePtrList cfg_node_top_level_list_from_string(Arena *arena, String8 string); |
| 145 | +internal CFG_NodeRec cfg_node_rec__depth_first(CFG_Node *root, CFG_Node *node); |
| 146 | + |
| 147 | +//- rjf: serialization |
| 148 | +internal String8 cfg_string_from_tree(Arena *arena, String8 root_path, CFG_Node *root); |
| 149 | + |
| 150 | +//////////////////////////////// |
| 151 | +//~ rjf: Config Writing Functions |
| 152 | + |
| 153 | +//- rjf: state creation / destroying |
| 154 | +internal CFG_State *cfg_state_alloc(void); |
| 155 | +internal void cfg_state_release(CFG_State *state); |
| 156 | + |
| 157 | +//- rjf: state -> ctx |
| 158 | +internal CFG_Ctx *cfg_state_ctx(CFG_State *state); |
| 159 | + |
| 160 | +//- rjf: tree building |
| 161 | +internal CFG_Node *cfg_node_alloc(CFG_State *state); |
| 162 | +internal void cfg_node_release(CFG_State *state, CFG_Node *node); |
| 163 | +internal void cfg_node_release_all_children(CFG_State *state, CFG_Node *node); |
| 164 | +internal CFG_Node *cfg_node_new(CFG_State *state, CFG_Node *parent, String8 string); |
| 165 | +internal CFG_Node *cfg_node_newf(CFG_State *state, CFG_Node *parent, char *fmt, ...); |
| 166 | +internal CFG_Node *cfg_node_new_replace(CFG_State *state, CFG_Node *parent, String8 string); |
| 167 | +internal CFG_Node *cfg_node_new_replacef(CFG_State *state, CFG_Node *parent, char *fmt, ...); |
| 168 | +internal CFG_Node *cfg_node_deep_copy(CFG_State *state, CFG_Node *src_root); |
| 169 | +internal void cfg_node_equip_string(CFG_State *state, CFG_Node *node, String8 string); |
| 170 | +internal void cfg_node_equip_stringf(CFG_State *state, CFG_Node *node, char *fmt, ...); |
| 171 | +internal void cfg_node_insert_child(CFG_State *state, CFG_Node *parent, CFG_Node *prev_child, CFG_Node *new_child); |
| 172 | +internal void cfg_node_unhook(CFG_State *state, CFG_Node *parent, CFG_Node *child); |
| 173 | +internal CFG_Node *cfg_node_child_from_string_or_alloc(CFG_State *state, CFG_Node *parent, String8 string); |
| 174 | + |
| 175 | +//- rjf: deserialization |
| 176 | +internal CFG_NodePtrList cfg_node_ptr_list_from_string(Arena *arena, String8 root_path, String8 string); |
| 177 | + |
| 178 | +#endif // CONFIG_H |
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