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author_ov4 <ov4@ov4.org>2026-09-21 04:50:06 +0000
committer_ov4 <ov4@ov4.org>2026-09-21 04:50:06 +0000
commit1c630655b2beb0f4b84fb7e1bc034ba62520be37 (patch)
treee90e70c425813df29c8bbd5c1e84ef22f4e4a176 /src/lexer/token.cc
parent9f5936bf64deb625a27259d778937e281ca19cea (diff)
fix name typo, and remove outdated parse
Diffstat (limited to 'src/lexer/token.cc')
-rw-r--r--src/lexer/token.cc204
1 files changed, 0 insertions, 204 deletions
diff --git a/src/lexer/token.cc b/src/lexer/token.cc
deleted file mode 100644
index ec69090..0000000
--- a/src/lexer/token.cc
+++ /dev/null
@@ -1,204 +0,0 @@
-#include "lexer/token.h"
-
-#include <string>
-#include <iostream>
-#include <print>
-
-#include "lexer/lexer_class.h"
-#include "lexer/enum_type.h"
-#include "lexer/symbol_property.h"
-#include "util/io.h"
-#include "error.h"
-
-using namespace std; // remove this
-
-constexpr bool TOKEN_DEBUG = false;
-
-namespace ov4
-{
-
-/*
- * remove leading chars
- * by default remove " \t"
- */
-string T_lexer::trim(const string &s, const string &trim_target) // trim_target = " \t"
-{
- size_t b = s.find_first_not_of(trim_target);
- if (b == string::npos)
- return "";
- size_t e = s.find_last_not_of(trim_target);
- return s.substr(b, e - b + 1);
-}
-
-
-bool T_lexer::is_single_symbol(char c)
-{
- string s = " ";
- s[0] = c;
- // quotation marks are treated as text
- if (symbol_property.contains(s) && c != '\'' && c != '\"')
- return true;
- return false;
-}
-
-void T_lexer::bracket_depth_changer(char c, int &bracket_depth)
-{
- if (c == '(')
- {
- bracket_depth++;
- if constexpr (TOKEN_DEBUG) loggerln("changed depth: {}", bracket_depth);
- return;
- }
- if (c == ')')
- {
- bracket_depth--;
- loggerln("changed depth: {}", bracket_depth);
- if (bracket_depth < 0)
- {
- throw T_error{error_code::TOKEN_UNMATCHED_BRACKET, "tokenizer: unmatched bracket(s)"};
- }
- return;
- }
-}
-
-/*
- * determine whether `s` and `next` can be combined to form a token
- */
-bool T_lexer::token_continue(const string &s, char next)
-{
- if constexpr (TOKEN_DEBUG) loggerln("token_continue: receiving {} {}", s, next);
- // s is empty, so next can be part of the token
- if (s.size() == 0) return true;
-
- // text -> text/symbol
- if (!is_single_symbol(s[s.size()-1]))
- {
- // text -> symbol
- if (is_single_symbol(next))
- return false;
-
- // text still
- return true;
- }
-
- // symbol -> symbol
- T_property tmp;
- if (symbol_property.contains(s))
- {
- tmp = symbol_property.at(s);
- if (tmp.continuable)
- {
- string prev_and_next = s + next;
- if (symbol_property.contains(prev_and_next))
- return true;
- return false;
- }
- return false;
- }
- else
- {
- if constexpr (TOKEN_DEBUG) loggerln("symbol not found in map");
- return false;
- }
-}
-
-// handle [prev, current)
-void T_lexer::token_push(const string &push_s, int bracket_depth, bool force_text) // force_text = false
-{
- T_token tmp;
- tmp.bracket_depth = bracket_depth;
- string trimmed = trim(push_s);
- if (trimmed == "") return;
-
- if constexpr (TOKEN_DEBUG) loggerln("finding {} in map", trimmed);
-
- if (symbol_property.contains(trimmed) && !force_text) // symbol
- {
- if constexpr (TOKEN_DEBUG) loggerln("token_push: adding symbol");
- tmp.token_type = symbol_property.at(trimmed).enum_type;
- }
- else
- {
- if constexpr (TOKEN_DEBUG) loggerln("token_push: adding text");
- // if (force_text)
- // trimmed = trim(trimmed, "\'\"");
- tmp.token_type = TEXT;
- tmp.text = trimmed;
- }
- token.push_back(tmp);
-}
-
-int T_lexer::tokenizer(const string &s)
-{
- if (s.size() == 0) return -1;
-
- size_t len = s.size();
- size_t token_vector_index = 0;
- string prev_str = "";
- bool force_text = false;
- int bracket_depth = 0;
- guard_type guard = GUARD_OFF;
-
-
- for (size_t i = 0; i < len; i++)
- {
-
- char c = s[i];
-
- prev_str += c;
-
- if constexpr (TOKEN_DEBUG) loggerln("---");
- if constexpr (TOKEN_DEBUG) loggerln("prev_str .{}. next char {}", prev_str, s[i+1]);
-
- if (c == '\'' || c == '\"')
- {
- if constexpr (TOKEN_DEBUG) loggerln("quotation");
-
- // turn on GUARD
- if (guard == GUARD_OFF)
- {
- guard = (c == '\'') ? GUARD_STRONG : GUARD_WEAK;
- if constexpr (TOKEN_DEBUG) loggerln("set guard {}", (c == '\'') ? "GUARD_STRONG" : "GUARD_WEAK");
- continue;
- }
- // turn off
- else if (guard == GUARD_STRONG && c == '\'')
- {
- guard = GUARD_OFF;
- if constexpr (TOKEN_DEBUG) loggerln("quitting strong guard");
- force_text = true;
- }
- //turn off
- else if (guard == GUARD_WEAK && c == '\"')
- {
- guard = GUARD_OFF;
- if constexpr (TOKEN_DEBUG) loggerln("quitting weak guard");
- force_text = true;
- } else
- continue;
- }
- // not quotation mark
- else if ((guard == GUARD_STRONG || guard == GUARD_WEAK))
- {
- if constexpr (TOKEN_DEBUG) loggerln("tokenizer: guarded, continue");
- continue;
- }
-
- bracket_depth_changer(c, bracket_depth);
-
- if ((i+1 == len) || !token_continue(prev_str, s[i+1]))
- {
- token_push(prev_str, bracket_depth, force_text);
- force_text = false;
- prev_str = "";
- continue;
- }
- }
-
- if (bracket_depth != 0)
- throw T_error{error_code::TOKEN_UNMATCHED_BRACKET, "tokenizer: unmatched bracket(s)"};
-
- return 0;
-}
-
-}