/*
4coder_code_index.h - Generic code indexing system for layout, definition jumps, etc.
*/

// TOP

#if !defined(FCODER_CODE_INDEX_H)
#define FCODER_CODE_INDEX_H

typedef i32 Code_Index_Scope_Delim_Kind;
enum {
  CodeIndexScopeDelim_ScopeOpen,
  CodeIndexScopeDelim_ScopeClose,
  CodeIndexScopeDelim_ParenOpen,
  CodeIndexScopeDelim_ParenClose,
  CodeIndexScopeDelim_BracketOpen,
  CodeIndexScopeDelim_BracketClose
};

struct Code_Index_Scope_Delim {
  Code_Index_Scope_Delim_Kind kind;
  i32 depth;
  Range_i64 pos;

  Code_Index_Scope_Delim* next;
  Code_Index_Scope_Delim* prev;
};

struct Code_Index_Scope_Delim_List {
  Code_Index_Scope_Delim* first;
  Code_Index_Scope_Delim* last;
  i32 count;
};

struct Code_Index_Nest_List{
    struct Code_Index_Nest *first;
    struct Code_Index_Nest *last;
    i32 count;
};

typedef i32 Code_Index_Nest_Kind;
enum{
    CodeIndexNest_Scope,
    CodeIndexNest_Paren,
    CodeIndexNest_Preprocessor,
    CodeIndexNest_Statement,
};

struct Code_Index_Nest{
    Code_Index_Nest *next;

    // TODO(PS): kind and delim are redundant, I don't want to break virtual indentation just yet
    // so Im leaving them both here.
    Code_Index_Nest_Kind kind;
    Code_Index_Scope_Delim_Kind delim;
    b32 is_closed;
    Range_i64 open;
    Range_i64 close;

    struct Code_Index_File *file;
    Code_Index_Nest *parent;

    Code_Index_Nest_List nest_list;
};

typedef i64 Code_Index_Note_Kind;
enum{
    CodeIndexNote_Type,
    CodeIndexNote_Function,
    CodeIndexNote_Macro,
    CodeIndexNote_4coderCommand,
};

struct Code_Index_Note{
    Code_Index_Note *next;
    Code_Index_Note_Kind note_kind;
    Range_i64 pos;
    String_Const_u8 text;
    struct Code_Index_File *file;
    Code_Index_Nest *parent;

    Code_Index_Note *prev_in_hash;
    Code_Index_Note *next_in_hash;
};

struct Code_Index_Note_List{
    Code_Index_Note *first;
    Code_Index_Note *last;
    i32 count;
};

struct Code_Index_File{
    Code_Index_Scope_Delim_List scope_delim_list;
    Code_Index_Nest_List nest_list;
    Code_Index_Note_List note_list;
    Buffer_ID buffer;
    Code_Index_Scope_Delim* scope_delim_free;
    Code_Index_Note* note_free;
};

struct Code_Index_File_Storage{
    Code_Index_File_Storage *next;
    Code_Index_File_Storage *prev;
    Arena arena;
    Code_Index_File *file;
};

struct Code_Index{
    System_Mutex mutex;
    Arena node_arena;
    Table_u64_u64 buffer_to_index_file;
    Code_Index_File_Storage *free_storage;
    Code_Index_File_Storage *storage_first;
    Code_Index_File_Storage *storage_last;
    i32 storage_count;

    Code_Index_Note_List name_hash[10000];
};

////////////////////////////////

typedef void Generic_Parse_Comment_Function(Application_Links *app, Arena *arena, Code_Index_File *index,
                                            Token *token, String_Const_u8 contents);

struct Generic_Parse_State{
    Application_Links *app;
    Arena *arena;
    String_Const_u8 contents;
    Token_Iterator_Array it;
    Generic_Parse_Comment_Function *handle_comment;
    u8 *prev_line_start;
    b32 finished;

    i32 scope_counter;
    i32 paren_counter;
    b32 in_preprocessor;
    b32 in_statement;

    b32 do_cpp_parse;
};

#endif

// BOTTOM