2024-08-08 11:16:50 +00:00
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#pragma once
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#include "llama-impl.h"
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#include <string>
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#include <vector>
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#include <unordered_map>
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#include <map>
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2024-09-24 10:22:55 +00:00
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#include <set>
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2024-08-08 11:16:50 +00:00
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struct llama_vocab {
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using id = llama_token;
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using token = std::string;
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using tattr = llama_token_attr;
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struct token_data {
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token text;
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float score;
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tattr attr;
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};
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2024-09-24 10:22:55 +00:00
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uint32_t n_vocab = 0; // TODO: not great because has to keep in sync with hparams.n_vocab
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2024-08-08 11:16:50 +00:00
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enum llama_vocab_type type = LLAMA_VOCAB_TYPE_SPM;
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enum llama_vocab_pre_type type_pre = LLAMA_VOCAB_PRE_TYPE_DEFAULT;
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int max_token_len = 0; // used for optimizing longest token search
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std::unordered_map<token, id> token_to_id;
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std::vector<token_data> id_to_token;
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std::vector<id> cache_special_tokens;
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std::vector<token> cache_token_to_piece; // llama_token_to_piece(special = true);
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std::map<std::pair<std::string, std::string>, int> bpe_ranks;
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// default LLaMA special tokens
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id special_bos_id = 1;
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id special_eos_id = 2;
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id special_unk_id = 0;
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id special_sep_id = -1;
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id special_pad_id = -1;
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id special_cls_id = -1;
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id special_mask_id = -1;
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id linefeed_id = 13;
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id special_prefix_id = -1;
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id special_suffix_id = -1;
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id special_middle_id = -1;
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id special_eot_id = -1; // TODO: move above after "eos_id", and here add "file separator" token
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id special_eom_id = -1;
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2024-09-24 10:22:55 +00:00
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// set of all tokens that cause "end of generation"
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std::set<id> special_eog_ids;
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// tokenizer flags
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bool tokenizer_add_space_prefix = false;
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bool tokenizer_add_bos = false;
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bool tokenizer_add_eos = false;
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bool tokenizer_ignore_merges = false;
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bool tokenizer_clean_spaces = false; // clean_up_tokenization_spaces
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bool tokenizer_remove_extra_whitespaces = false;
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bool tokenizer_escape_whitespaces = true;
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bool tokenizer_treat_whitespace_as_suffix = false;
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std::vector<char> precompiled_charsmap;
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int find_bpe_rank(const std::string & token_left, const std::string & token_right) const;
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};
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//
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// internal API
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//
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// TODO: rename to llama_tokenize_impl
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// TODO: This should probably be in llama.h
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std::vector<llama_vocab::id> llama_tokenize_internal(
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const llama_vocab & vocab,
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std::string raw_text,
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bool add_special,
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bool parse_special = false);
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2024-09-24 10:22:55 +00:00
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// TODO: move the API below as member functions of llama_vocab
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llama_token llama_byte_to_token_impl(const llama_vocab & vocab, uint8_t ch);
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const char * llama_token_get_text_impl(const struct llama_vocab & vocab, llama_token token);
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float llama_token_get_score_impl(const struct llama_vocab & vocab, llama_token token);
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llama_token_attr llama_token_get_attr_impl(const struct llama_vocab & vocab, llama_token token);
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bool llama_token_is_eog_impl(const struct llama_vocab & vocab, llama_token token);
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bool llama_token_is_control_impl(const struct llama_vocab & vocab, llama_token token);
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llama_token llama_token_bos_impl(const struct llama_vocab & vocab);
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llama_token llama_token_eos_impl(const struct llama_vocab & vocab);
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llama_token llama_token_cls_impl(const struct llama_vocab & vocab);
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llama_token llama_token_sep_impl(const struct llama_vocab & vocab);
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llama_token llama_token_nl_impl (const struct llama_vocab & vocab);
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llama_token llama_token_pad_impl(const struct llama_vocab & vocab);
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2024-08-28 08:04:02 +00:00
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bool llama_add_bos_token_impl(const struct llama_vocab & vocab);
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bool llama_add_eos_token_impl(const struct llama_vocab & vocab);
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llama_token llama_token_prefix_impl(const struct llama_vocab & vocab);
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llama_token llama_token_middle_impl(const struct llama_vocab & vocab);
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llama_token llama_token_suffix_impl(const struct llama_vocab & vocab);
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llama_token llama_token_eot_impl (const struct llama_vocab & vocab);
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llama_token llama_token_eom_impl (const struct llama_vocab & vocab);
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int32_t llama_tokenize_impl(
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const struct llama_vocab & vocab,
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const char * text,
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int32_t text_len,
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llama_token * tokens,
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int32_t n_tokens_max,
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bool add_special,
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bool parse_special);
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// does not write null-terminator to buf
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int32_t llama_token_to_piece_impl(
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const struct llama_vocab & vocab,
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llama_token token,
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char * buf,
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int32_t length,
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int32_t lstrip,
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bool special);
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int32_t llama_detokenize_impl(
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const struct llama_vocab & vocab,
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const llama_token * tokens,
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int32_t n_tokens,
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char * text,
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int32_t text_len_max,
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bool remove_special,
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bool unparse_special);
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