715 lines
24 KiB
C++
715 lines
24 KiB
C++
/*
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4coder_code_index.cpp - Generic code indexing system for layout, definition jumps, etc.
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*/
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// TOP
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global Code_Index global_code_index = {};
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function void
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code_index_init(void){
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global_code_index.mutex = system_mutex_make();
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global_code_index.node_arena = make_arena_system(KB(4));
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global_code_index.buffer_to_index_file =
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make_table_u64_u64(global_code_index.node_arena.base_allocator, 500);
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}
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function Code_Index_File_Storage*
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code_index__alloc_storage(void){
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Code_Index_File_Storage *result = global_code_index.free_storage;
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if (result == 0){
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result = push_array_zero(&global_code_index.node_arena, Code_Index_File_Storage, 1);
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}
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else{
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sll_stack_pop(global_code_index.free_storage);
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}
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zdll_push_back(global_code_index.storage_first, global_code_index.storage_last, result);
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global_code_index.storage_count += 1;
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return(result);
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}
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function void
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code_index__free_storage(Code_Index_File_Storage *storage){
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zdll_remove(global_code_index.storage_first, global_code_index.storage_last, storage);
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global_code_index.storage_count -= 1;
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sll_stack_push(global_code_index.free_storage, storage);
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}
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function void
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code_index_push_nest(Code_Index_Nest_List *list, Code_Index_Nest *nest){
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sll_queue_push(list->first, list->last, nest);
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list->count += 1;
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}
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function Code_Index_Nest_Ptr_Array
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code_index_nest_ptr_array_from_list(Arena *arena, Code_Index_Nest_List *list){
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Code_Index_Nest_Ptr_Array array = {};
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array.ptrs = push_array_zero(arena, Code_Index_Nest*, list->count);
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array.count = list->count;
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i32 counter = 0;
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for (Code_Index_Nest *node = list->first;
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node != 0;
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node = node->next){
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array.ptrs[counter] = node;
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counter += 1;
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}
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return(array);
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}
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function void
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code_index_lock(void){
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system_mutex_acquire(global_code_index.mutex);
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}
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function void
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code_index_unlock(void){
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system_mutex_release(global_code_index.mutex);
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}
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function void
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code_index_set_file(Buffer_ID buffer, Arena arena, Code_Index_File *index){
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Code_Index_File_Storage *storage = 0;
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Table_Lookup lookup = table_lookup(&global_code_index.buffer_to_index_file,
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buffer);
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if (lookup.found_match){
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u64 val = 0;
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table_read(&global_code_index.buffer_to_index_file, lookup, &val);
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storage = (Code_Index_File_Storage*)IntAsPtr(val);
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linalloc_clear(&storage->arena);
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}
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else{
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storage = code_index__alloc_storage();
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table_insert(&global_code_index.buffer_to_index_file, buffer,
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(u64)PtrAsInt(storage));
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}
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storage->arena = arena;
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storage->file = index;
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}
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function void
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code_index_erase_file(Buffer_ID buffer){
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Table_Lookup lookup = table_lookup(&global_code_index.buffer_to_index_file, buffer);
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if (lookup.found_match){
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u64 val = 0;
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table_read(&global_code_index.buffer_to_index_file, lookup, &val);
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Code_Index_File_Storage *storage = (Code_Index_File_Storage*)IntAsPtr(val);
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linalloc_clear(&storage->arena);
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table_erase(&global_code_index.buffer_to_index_file, lookup);
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code_index__free_storage(storage);
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}
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}
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function Code_Index_File*
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code_index_get_file(Buffer_ID buffer){
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Code_Index_File *result = 0;
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Table_Lookup lookup = table_lookup(&global_code_index.buffer_to_index_file, buffer);
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if (lookup.found_match){
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u64 val = 0;
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table_read(&global_code_index.buffer_to_index_file, lookup, &val);
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Code_Index_File_Storage *storage = (Code_Index_File_Storage*)IntAsPtr(val);
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result = storage->file;
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}
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return(result);
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}
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function Code_Index_Nest*
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code_index_get_nest(Code_Index_Nest_Ptr_Array *array, i64 pos){
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Code_Index_Nest *result = 0;
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i32 count = array->count;
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Code_Index_Nest **nest_ptrs = array->ptrs;
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for (i32 i = 0; i < count; i += 1){
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Code_Index_Nest *nest = nest_ptrs[i];
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if (nest->open.max <= pos && pos <= nest->close.min){
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Code_Index_Nest *sub_nest =
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code_index_get_nest(&nest->nest_array, pos);
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if (sub_nest != 0){
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result = sub_nest;
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}
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else{
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result = nest;
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}
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break;
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}
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}
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return(result);
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}
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function Code_Index_Nest*
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code_index_get_nest(Code_Index_Nest *nest, i64 pos){
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return(code_index_get_nest(&nest->nest_array, pos));
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}
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function Code_Index_Nest*
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code_index_get_nest(Code_Index_File *file, i64 pos){
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return(code_index_get_nest(&file->nest_array, pos));
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}
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function void
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index_shift(i64 *ptr, Range_i64 old_range, umem new_size){
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i64 i = *ptr;
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if (old_range.min <= i && i < old_range.max){
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*ptr = old_range.first;
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}
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else if (old_range.max <= i){
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*ptr = i + new_size - (old_range.max - old_range.min);
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}
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}
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function void
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code_index_shift(Code_Index_Nest_Ptr_Array *array,
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Range_i64 old_range, umem new_size){
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i32 count = array->count;
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Code_Index_Nest **nest_ptr = array->ptrs;
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for (i32 i = 0; i < count; i += 1, nest_ptr += 1){
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Code_Index_Nest *nest = *nest_ptr;
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index_shift(&nest->open.min, old_range, new_size);
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index_shift(&nest->open.max, old_range, new_size);
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if (nest->is_closed){
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index_shift(&nest->close.min, old_range, new_size);
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index_shift(&nest->close.max, old_range, new_size);
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}
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code_index_shift(&nest->nest_array, old_range, new_size);
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}
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}
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function void
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code_index_shift(Code_Index_File *file, Range_i64 old_range, umem new_size){
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code_index_shift(&file->nest_array, old_range, new_size);
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}
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////////////////////////////////
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function void
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generic_parse_inc(Generic_Parse_State *state){
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if (!token_it_inc_all(&state->it)){
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state->finished = true;
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}
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}
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function void
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generic_parse_skip_soft_tokens(Code_Index_File *index, Generic_Parse_State *state){
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Token *token = token_it_read(&state->it);
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for (;token != 0 && !state->finished;){
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if (state->in_preprocessor && !HasFlag(token->flags, TokenBaseFlag_PreprocessorBody)){
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break;
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}
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if (token->kind == TokenBaseKind_Comment){
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state->handle_comment(state->app, state->arena, index, token, state->contents);
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}
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else if (token->kind == TokenBaseKind_Whitespace){
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Range_i64 range = Ii64(token);
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u8 *ptr = state->contents.str + range.one_past_last - 1;
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for (i64 i = range.one_past_last - 1;
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i >= range.first;
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i -= 1, ptr -= 1){
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if (*ptr == '\n'){
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state->prev_line_start = ptr + 1;
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break;
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}
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}
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}
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else{
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break;
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}
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generic_parse_inc(state);
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token = token_it_read(&state->it);
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}
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}
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function void
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generic_parse_init(Application_Links *app, Arena *arena, String_Const_u8 contents,
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Token_Array *tokens,
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Generic_Parse_Comment_Function *handle_comment, Generic_Parse_State *state){
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state->app = app;
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state->arena = arena;
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state->contents = contents;
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state->it = token_iterator(0, tokens);
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state->handle_comment = handle_comment;
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state->prev_line_start = contents.str;
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}
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function Code_Index_Nest*
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generic_parse_scope(Code_Index_File *index, Generic_Parse_State *state, i64 indentation);
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function Code_Index_Nest*
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generic_parse_paren(Code_Index_File *index, Generic_Parse_State *state, i64 indentation);
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function Code_Index_Nest*
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generic_parse_preprocessor(Code_Index_File *index, Generic_Parse_State *state, i64 indentation){
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Token *token = token_it_read(&state->it);
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Code_Index_Nest *result = push_array_zero(state->arena, Code_Index_Nest, 1);
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result->kind = CodeIndexNest_Preprocessor;
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result->open = Ii64(token->pos);
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result->close = Ii64(max_i64);
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result->file = index;
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result->interior_indentation = 0;
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result->close_indentation = 0;
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indentation = 0;
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state->in_preprocessor = true;
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generic_parse_inc(state);
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for (;;){
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generic_parse_skip_soft_tokens(index, state);
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token = token_it_read(&state->it);
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if (token == 0 || state->finished){
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break;
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}
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if (!HasFlag(token->flags, TokenBaseFlag_PreprocessorBody) ||
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token->kind == TokenBaseKind_Preprocessor){
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result->is_closed = true;
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result->close = Ii64(token->pos);
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break;
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}
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if (token->kind == TokenBaseKind_ScopeOpen){
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Code_Index_Nest *nest = generic_parse_scope(index, state, indentation);
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nest->parent = result;
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code_index_push_nest(&result->nest_list, nest);
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continue;
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}
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if (token->kind == TokenBaseKind_ParentheticalOpen){
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Code_Index_Nest *nest = generic_parse_paren(index, state, indentation);
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nest->parent = result;
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code_index_push_nest(&result->nest_list, nest);
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continue;
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}
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generic_parse_inc(state);
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}
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result->nest_array = code_index_nest_ptr_array_from_list(state->arena, &result->nest_list);
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state->in_preprocessor = false;
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return(result);
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}
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function Code_Index_Nest*
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generic_parse_scope(Code_Index_File *index, Generic_Parse_State *state,
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i64 indentation){
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Token *token = token_it_read(&state->it);
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Code_Index_Nest *result = push_array_zero(state->arena, Code_Index_Nest, 1);
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result->kind = CodeIndexNest_Scope;
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result->open = Ii64(token);
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result->close = Ii64(max_i64);
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result->file = index;
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result->interior_indentation = indentation + 4;
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result->close_indentation = indentation;
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indentation = result->interior_indentation;
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generic_parse_inc(state);
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for (;;){
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generic_parse_skip_soft_tokens(index, state);
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token = token_it_read(&state->it);
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if (token == 0 || state->finished){
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break;
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}
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if (state->in_preprocessor){
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if (!HasFlag(token->flags, TokenBaseFlag_PreprocessorBody) ||
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token->kind == TokenBaseKind_Preprocessor){
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break;
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}
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}
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else{
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if (token->kind == TokenBaseKind_Preprocessor){
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Code_Index_Nest *nest = generic_parse_preprocessor(index, state, indentation);
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code_index_push_nest(&index->nest_list, nest);
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continue;
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}
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}
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if (token->kind == TokenBaseKind_ScopeClose){
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result->is_closed = true;
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result->close = Ii64(token);
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generic_parse_inc(state);
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break;
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}
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if (token->kind == TokenBaseKind_ScopeOpen){
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Code_Index_Nest *nest = generic_parse_scope(index, state, indentation);
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nest->parent = result;
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code_index_push_nest(&result->nest_list, nest);
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continue;
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}
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if (token->kind == TokenBaseKind_ParentheticalOpen){
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Code_Index_Nest *nest = generic_parse_paren(index, state, indentation);
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nest->parent = result;
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code_index_push_nest(&result->nest_list, nest);
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continue;
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}
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generic_parse_inc(state);
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}
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result->nest_array = code_index_nest_ptr_array_from_list(state->arena, &result->nest_list);
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return(result);
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}
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function Code_Index_Nest*
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generic_parse_paren(Code_Index_File *index, Generic_Parse_State *state,
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i64 indentation){
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Token *token = token_it_read(&state->it);
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Code_Index_Nest *result = push_array_zero(state->arena, Code_Index_Nest, 1);
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result->kind = CodeIndexNest_Paren;
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result->open = Ii64(token);
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result->close = Ii64(max_i64);
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result->file = index;
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i64 manifested_characters_on_line = 0;
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{
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u8 *ptr = state->prev_line_start;
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u8 *end_ptr = state->contents.str + token->pos;
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// NOTE(allen): Initial whitespace
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for (;ptr < end_ptr; ptr += 1){
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if (!character_is_whitespace(*ptr)){
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break;
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}
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}
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// NOTE(allen): Manifested characters
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manifested_characters_on_line = (i64)(end_ptr - ptr) + token->size;
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}
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indentation += manifested_characters_on_line;
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result->interior_indentation = indentation;
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result->close_indentation = indentation;
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generic_parse_inc(state);
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for (;;){
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generic_parse_skip_soft_tokens(index, state);
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token = token_it_read(&state->it);
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if (token == 0 || state->finished){
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break;
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}
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if (state->in_preprocessor){
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if (!HasFlag(token->flags, TokenBaseFlag_PreprocessorBody) ||
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token->kind == TokenBaseKind_Preprocessor){
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break;
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}
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}
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else{
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if (token->kind == TokenBaseKind_Preprocessor){
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Code_Index_Nest *nest = generic_parse_preprocessor(index, state, indentation);
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code_index_push_nest(&index->nest_list, nest);
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continue;
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}
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}
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if (token->kind == TokenBaseKind_ParentheticalClose){
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result->is_closed = true;
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result->close = Ii64(token);
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generic_parse_inc(state);
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break;
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}
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if (token->kind == TokenBaseKind_ScopeClose){
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break;
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}
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if (token->kind == TokenBaseKind_Preprocessor){
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Code_Index_Nest *nest = generic_parse_preprocessor(index, state, indentation);
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code_index_push_nest(&index->nest_list, nest);
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continue;
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}
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if (token->kind == TokenBaseKind_ScopeOpen){
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Code_Index_Nest *nest = generic_parse_scope(index, state, indentation);
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nest->parent = result;
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code_index_push_nest(&result->nest_list, nest);
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continue;
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}
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if (token->kind == TokenBaseKind_ParentheticalOpen){
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Code_Index_Nest *nest = generic_parse_paren(index, state, indentation);
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nest->parent = result;
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code_index_push_nest(&result->nest_list, nest);
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continue;
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}
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generic_parse_inc(state);
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}
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result->nest_array = code_index_nest_ptr_array_from_list(state->arena, &result->nest_list);
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return(result);
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}
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function b32
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generic_parse_full_input_breaks(Code_Index_File *index, Generic_Parse_State *state, i32 limit){
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b32 result = false;
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i64 indentation = 0;
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i64 first_index = token_it_index(&state->it);
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i64 one_past_last_index = first_index + limit;
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for (;;){
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generic_parse_skip_soft_tokens(index, state);
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Token *token = token_it_read(&state->it);
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if (token == 0 || state->finished){
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result = true;
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break;
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}
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if (token->kind == TokenBaseKind_Preprocessor){
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Code_Index_Nest *nest = generic_parse_preprocessor(index, state, indentation);
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code_index_push_nest(&index->nest_list, nest);
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}
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else if (token->kind == TokenBaseKind_ScopeOpen){
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Code_Index_Nest *nest = generic_parse_scope(index, state, indentation);
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code_index_push_nest(&index->nest_list, nest);
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}
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else if (token->kind == TokenBaseKind_ParentheticalOpen){
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Code_Index_Nest *nest = generic_parse_paren(index, state, indentation);
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code_index_push_nest(&index->nest_list, nest);
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}
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else{
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generic_parse_inc(state);
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}
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i64 index = token_it_index(&state->it);
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if (index >= one_past_last_index){
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token = token_it_read(&state->it);
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if (token == 0){
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result = true;
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}
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break;
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}
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}
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if (result){
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index->nest_array = code_index_nest_ptr_array_from_list(state->arena, &index->nest_list);
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}
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return(result);
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}
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////////////////////////////////
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function void
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default_comment_index(Application_Links *app, Arena *arena, Code_Index_File *index,
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Token *token, String_Const_u8 contents){
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}
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function void
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generic_parse_init(Application_Links *app, Arena *arena, String_Const_u8 contents, Token_Array *tokens,
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Generic_Parse_State *state){
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generic_parse_init(app, arena, contents, tokens, default_comment_index, state);
|
|
}
|
|
|
|
////////////////////////////////
|
|
|
|
function i64
|
|
layout_index_indent(Code_Index_File *file, i64 pos){
|
|
i64 indent = 0;
|
|
Code_Index_Nest *nest = code_index_get_nest(file, pos);
|
|
if (nest != 0){
|
|
if (pos == nest->close.min){
|
|
indent = nest->close_indentation;
|
|
}
|
|
else{
|
|
indent = nest->interior_indentation;
|
|
}
|
|
}
|
|
return(indent);
|
|
}
|
|
|
|
function f32
|
|
layout_index_x_shift(Code_Index_File *file, i64 pos, f32 space_advance){
|
|
i64 indent = layout_index_indent(file, pos);
|
|
return(((f32)indent)*space_advance);
|
|
}
|
|
|
|
function Layout_Item_List
|
|
layout_index_unwrapped__inner(Application_Links *app, Arena *arena, Buffer_ID buffer, Range_i64 range, Face_ID face, f32 width, Code_Index_File *file){
|
|
Scratch_Block scratch(app);
|
|
|
|
Layout_Item_List list = get_empty_item_list(range);
|
|
String_Const_u8 text = push_buffer_range(app, scratch, buffer, range);
|
|
|
|
Face_Advance_Map advance_map = get_face_advance_map(app, face);
|
|
Face_Metrics metrics = get_face_metrics(app, face);
|
|
LefRig_TopBot_Layout_Vars pos_vars = get_lr_tb_layout_vars(&advance_map, &metrics, width);
|
|
|
|
f32 wrap_align_x = width - metrics.normal_advance;
|
|
|
|
if (text.size == 0){
|
|
lr_tb_write_blank(&pos_vars, arena, &list, range.start);
|
|
}
|
|
else{
|
|
b32 first_of_the_line = true;
|
|
Newline_Layout_Vars newline_vars = get_newline_layout_vars();
|
|
|
|
u8 *ptr = text.str;
|
|
u8 *end_ptr = ptr + text.size;
|
|
u8 *word_ptr = ptr;
|
|
|
|
if (!character_is_whitespace(*ptr)){
|
|
goto consuming_non_whitespace;
|
|
}
|
|
|
|
skipping_leading_whitespace:
|
|
for (;ptr < end_ptr; ptr += 1){
|
|
if (!character_is_whitespace(*ptr)){
|
|
word_ptr = ptr;
|
|
goto consuming_non_whitespace;
|
|
}
|
|
if (*ptr == '\n'){
|
|
goto consuming_normal_whitespace;
|
|
}
|
|
}
|
|
|
|
if (ptr == end_ptr){
|
|
goto finish;
|
|
}
|
|
|
|
consuming_non_whitespace:
|
|
for (;ptr <= end_ptr; ptr += 1){
|
|
if (ptr == end_ptr || character_is_whitespace(*ptr)){
|
|
break;
|
|
}
|
|
}
|
|
|
|
{
|
|
newline_layout_consume_default(&newline_vars);
|
|
|
|
String_Const_u8 word = SCu8(word_ptr, ptr);
|
|
u8 *word_end = ptr;
|
|
|
|
if (!first_of_the_line){
|
|
f32 total_advance = 0.f;
|
|
ptr = word.str;
|
|
for (;ptr < word_end;){
|
|
Character_Consume_Result consume =
|
|
utf8_consume(ptr, (umem)(word_end - ptr));
|
|
if (consume.codepoint != max_u32){
|
|
total_advance += lr_tb_advance(&pos_vars, consume.codepoint);
|
|
}
|
|
else{
|
|
total_advance += lr_tb_advance_byte(&pos_vars);
|
|
}
|
|
ptr += consume.inc;
|
|
}
|
|
|
|
if (lr_tb_crosses_width(&pos_vars, total_advance)){
|
|
i64 index = layout_index_from_ptr(word.str, text.str, range.first);
|
|
lr_tb_align_rightward(&pos_vars, wrap_align_x);
|
|
lr_tb_write_ghost(&pos_vars, arena, &list, index, '\\');
|
|
|
|
lr_tb_next_line(&pos_vars);
|
|
f32 shift = layout_index_x_shift(file, index, metrics.space_advance);
|
|
lr_tb_advance_x_without_item(&pos_vars, shift);
|
|
}
|
|
}
|
|
else{
|
|
i64 index = layout_index_from_ptr(word.str, text.str, range.first);
|
|
f32 shift = layout_index_x_shift(file, index, metrics.space_advance);
|
|
lr_tb_advance_x_without_item(&pos_vars, shift);
|
|
}
|
|
|
|
ptr = word.str;
|
|
|
|
for (;ptr < word_end;){
|
|
Character_Consume_Result consume =
|
|
utf8_consume(ptr, (umem)(word_end - ptr));
|
|
i64 index = layout_index_from_ptr(ptr, text.str, range.first);
|
|
|
|
if (consume.codepoint != max_u32){
|
|
lr_tb_write(&pos_vars, arena, &list, index, consume.codepoint);
|
|
}
|
|
else{
|
|
lr_tb_write_byte(&pos_vars, arena, &list, index, *ptr);
|
|
}
|
|
|
|
ptr += consume.inc;
|
|
}
|
|
|
|
first_of_the_line = false;
|
|
}
|
|
|
|
consuming_normal_whitespace:
|
|
for (; ptr < end_ptr; ptr += 1){
|
|
if (!character_is_whitespace(*ptr)){
|
|
word_ptr = ptr;
|
|
goto consuming_non_whitespace;
|
|
}
|
|
|
|
i64 index = layout_index_from_ptr(ptr, text.str, range.first);
|
|
switch (*ptr){
|
|
default:
|
|
{
|
|
newline_layout_consume_default(&newline_vars);
|
|
lr_tb_write(&pos_vars, arena, &list, index, *ptr);
|
|
first_of_the_line = false;
|
|
}break;
|
|
|
|
case '\r':
|
|
{
|
|
newline_layout_consume_CR(&newline_vars, index);
|
|
}break;
|
|
|
|
case '\n':
|
|
{
|
|
if (first_of_the_line){
|
|
f32 shift = layout_index_x_shift(file, index,
|
|
metrics.space_advance);
|
|
lr_tb_advance_x_without_item(&pos_vars, shift);
|
|
}
|
|
|
|
u64 newline_index = newline_layout_consume_LF(&newline_vars, index);
|
|
lr_tb_write_blank(&pos_vars, arena, &list, newline_index);
|
|
lr_tb_next_line(&pos_vars);
|
|
first_of_the_line = true;
|
|
ptr += 1;
|
|
goto skipping_leading_whitespace;
|
|
}break;
|
|
}
|
|
}
|
|
|
|
finish:
|
|
if (newline_layout_consume_finish(&newline_vars)){
|
|
i64 index = layout_index_from_ptr(ptr, text.str, range.first);
|
|
if (first_of_the_line){
|
|
f32 shift = layout_index_x_shift(file, index,
|
|
metrics.space_advance);
|
|
lr_tb_advance_x_without_item(&pos_vars, shift);
|
|
}
|
|
lr_tb_write_blank(&pos_vars, arena, &list, index);
|
|
}
|
|
}
|
|
|
|
layout_item_list_finish(&list, -pos_vars.line_to_text_shift);
|
|
|
|
return(list);
|
|
}
|
|
|
|
function Layout_Item_List
|
|
layout_virt_indent_index_unwrapped(Application_Links *app, Arena *arena,
|
|
Buffer_ID buffer, Range_i64 range, Face_ID face,
|
|
f32 width){
|
|
Layout_Item_List result = {};
|
|
|
|
code_index_lock();
|
|
Code_Index_File *file = code_index_get_file(buffer);
|
|
if (file != 0){
|
|
result = layout_index_unwrapped__inner(app, arena, buffer, range, face, width, file);
|
|
}
|
|
code_index_unlock();
|
|
if (file == 0){
|
|
result = layout_virt_indent_literal_unwrapped(app, arena, buffer, range, face, width);
|
|
}
|
|
|
|
return(result);
|
|
}
|
|
|
|
// BOTTOM
|
|
|