diff options
Diffstat (limited to 'syntax.c')
| -rw-r--r-- | syntax.c | 57 |
1 files changed, 50 insertions, 7 deletions
@@ -109,6 +109,7 @@ ColorSetting syntax_char_type_to_color_setting(SyntaxCharType t) { case SYNTAX_CHARACTER: return COLOR_CHARACTER; case SYNTAX_CONSTANT: return COLOR_CONSTANT; case SYNTAX_BUILTIN: return COLOR_BUILTIN; + case SYNTAX_TODO: return COLOR_TODO; } return COLOR_TEXT; } @@ -168,7 +169,7 @@ bool syntax_is_opening_bracket(Language lang, char32_t c) { } // lookup the given string in the keywords table -static Keyword const *syntax_keyword_lookup(const KeywordList *all_keywords, const char32_t *str, size_t len) { +static const Keyword *syntax_keyword_lookup(const KeywordList *all_keywords, const char32_t *str, size_t len) { if (!len) return NULL; const KeywordList *list = &all_keywords[str[0] % 128]; @@ -184,6 +185,48 @@ static Keyword const *syntax_keyword_lookup(const KeywordList *all_keywords, con return NULL; } +// fast function to figure out if something can be in a comment keyword (like _TODO_) +static bool can_be_comment_keyword(char32_t c) { + return c < 128 && c >= 'A' && c <= 'Z';//fuck you ebcdic +} + +// this is used to highlight comments across languages, for stuff like TODOs +static SyntaxCharType syntax_highlight_comment(const char32_t *line, u32 i, u32 line_len) { + assert(i < line_len); + if (!can_be_comment_keyword(line[i])) + return SYNTAX_COMMENT; // cannot be a keyword + + u32 max_len = 10; // maximum length of any comment keyword + + // find end of keyword + u32 end = i + 1; + while (end < line_len && i + max_len > end && is32_alpha(line[end])) { + if (!can_be_comment_keyword(line[end])) + return SYNTAX_COMMENT; + ++end; + } + if (end < line_len && (line[end] == '_' || is32_digit(line[end]))) + return SYNTAX_COMMENT; + + // find start of keyword + u32 start = i; + while (start > 0 && start + max_len > i && is32_alpha(line[start])) { + if (!can_be_comment_keyword(line[start])) + return SYNTAX_COMMENT; + --start; + } + if (!is32_alpha(line[start])) + ++start; + if (start > 0 && (line[start - 1] == '_' || is32_digit(line[start - 1]))) + return SYNTAX_COMMENT; + + // look it up + const Keyword *kwd = syntax_keyword_lookup(syntax_all_keywords_comment, &line[start], end - start); + if (kwd) + return kwd->type; + return SYNTAX_COMMENT; +} + // does i continue the number literal from i-1 static bool syntax_number_continues(Language lang, const char32_t *line, u32 line_len, u32 i) { if (line[i] == '.') { @@ -423,7 +466,7 @@ static void syntax_highlight_c_cpp(SyntaxState *state_ptr, const char32_t *line, if (char_types && !dealt_with) { SyntaxCharType type = SYNTAX_NORMAL; if (in_single_line_comment || in_multi_line_comment) - type = SYNTAX_COMMENT; + type = syntax_highlight_comment(line, i, line_len); else if (in_string) type = SYNTAX_STRING; else if (in_char) @@ -648,7 +691,7 @@ static void syntax_highlight_rust(SyntaxState *state, const char32_t *line, u32 if (char_types && !dealt_with) { SyntaxCharType type = SYNTAX_NORMAL; if (comment_depth) { - type = SYNTAX_COMMENT; + type = syntax_highlight_comment(line, i, line_len); } else if (in_string) { type = SYNTAX_STRING; } else if (in_number) { @@ -1451,7 +1494,7 @@ static void syntax_highlight_javascript_like( if (char_types && !dealt_with) { SyntaxCharType type = SYNTAX_NORMAL; if (in_multiline_comment) - type = SYNTAX_COMMENT; + type = syntax_highlight_comment(line, i, line_len); else if (in_string) type = SYNTAX_STRING; else if (in_number) @@ -1574,7 +1617,7 @@ static void syntax_highlight_java(SyntaxState *state_ptr, const char32_t *line, if (char_types && !dealt_with) { SyntaxCharType type = SYNTAX_NORMAL; if (in_multiline_comment) - type = SYNTAX_COMMENT; + type = syntax_highlight_comment(line, i, line_len); else if (in_string) type = SYNTAX_STRING; else if (in_char) @@ -1714,7 +1757,7 @@ static void syntax_highlight_go(SyntaxState *state_ptr, const char32_t *line, u3 if (char_types && !dealt_with) { SyntaxCharType type = SYNTAX_NORMAL; if (in_multiline_comment) - type = SYNTAX_COMMENT; + type = syntax_highlight_comment(line, i, line_len); else if (in_string) type = SYNTAX_STRING; else if (in_char) @@ -1935,7 +1978,7 @@ static void syntax_highlight_css(SyntaxState *state_ptr, const char32_t *line, u if (char_types && !dealt_with && i < line_len) { SyntaxCharType type = SYNTAX_NORMAL; if (in_comment) - type = SYNTAX_COMMENT; + type = syntax_highlight_comment(line, i, line_len); char_types[i] = type; } } |