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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,284 @@ | ||
| // -*- mode:c++;indent-tabs-mode:nil;c-basic-offset:4;coding:utf-8 -*- | ||
| // vi: set et ft=cpp ts=4 sts=4 sw=4 fenc=utf-8 :vi | ||
| // | ||
| // Copyright 2024 Mozilla Foundation | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| #include "highlight.h" | ||
|
|
||
| #include <ctype.h> | ||
|
|
||
| // The main challenge with C# is that C# v11 introduced a triple quote | ||
| // multi-line string literal syntax that's sort of like python and lua | ||
| // | ||
| // Console.WriteLine(""); | ||
| // Console.WriteLine("\""); | ||
| // Console.WriteLine(""""""); | ||
| // Console.WriteLine(""""""); | ||
| // Console.WriteLine(""" yo "" hi """); | ||
| // Console.WriteLine("""" yo """ hi """"); | ||
| // Console.WriteLine(""""First | ||
| // """100 Prime""" | ||
| // Numbers: | ||
| // """"); | ||
| // | ||
| // As we can see above, you can use four, five, or more dquotes so you | ||
| // can embed triple quoted strings inside. | ||
|
|
||
| enum { | ||
| NORMAL, | ||
| WORD, | ||
| QUOTE, | ||
| QUOTE_BACKSLASH, | ||
| SLASH, | ||
| SLASH_SLASH, | ||
| SLASH_STAR, | ||
| SLASH_STAR_STAR, | ||
| DQUOTE, | ||
| STR, | ||
| STR_BACKSLASH, | ||
| DQUOTE_DQUOTE, | ||
| DQUOTE_DQUOTE_DQUOTE, | ||
| TRIPS, | ||
| TRIPS_DQUOTE, | ||
| }; | ||
|
|
||
| HighlightCsharp::HighlightCsharp() { | ||
| } | ||
|
|
||
| HighlightCsharp::~HighlightCsharp() { | ||
| } | ||
|
|
||
| void HighlightCsharp::feed(std::string *r, std::string_view input) { | ||
| int c; | ||
| for (size_t i = 0; i < input.size(); ++i) { | ||
| c = input[i] & 255; | ||
| switch (t_) { | ||
|
|
||
| Normal: | ||
| case NORMAL: | ||
| if (!isascii(c) || isalpha(c) || c == '_' || c == '#') { | ||
| t_ = WORD; | ||
| word_ += c; | ||
| } else if (c == '/') { | ||
| t_ = SLASH; | ||
| } else if (c == '\'') { | ||
| t_ = QUOTE; | ||
| *r += HI_STRING; | ||
| *r += c; | ||
| } else if (c == '"') { | ||
| t_ = DQUOTE; | ||
| *r += HI_STRING; | ||
| *r += c; | ||
| } else { | ||
| *r += c; | ||
| } | ||
| break; | ||
|
|
||
| case WORD: | ||
| if (!isascii(c) || isalnum(c) || c == '_' || c == '$' || c == '#') { | ||
| word_ += c; | ||
| } else { | ||
| if (is_keyword_csharp(word_.data(), word_.size())) { | ||
| *r += HI_KEYWORD; | ||
| *r += word_; | ||
| *r += HI_RESET; | ||
| } else if (is_keyword_csharp_constant(word_.data(), word_.size())) { | ||
| *r += HI_CONSTANT; | ||
| *r += word_; | ||
| *r += HI_RESET; | ||
| } else { | ||
| *r += word_; | ||
| } | ||
| word_.clear(); | ||
| t_ = NORMAL; | ||
| goto Normal; | ||
| } | ||
| break; | ||
|
|
||
| case SLASH: | ||
| if (c == '/') { | ||
| *r += HI_COMMENT; | ||
| *r += "//"; | ||
| t_ = SLASH_SLASH; | ||
| } else if (c == '*') { | ||
| *r += HI_COMMENT; | ||
| *r += "/*"; | ||
| t_ = SLASH_STAR; | ||
| } else { | ||
| *r += '/'; | ||
| t_ = NORMAL; | ||
| goto Normal; | ||
| } | ||
| break; | ||
|
|
||
| case SLASH_SLASH: | ||
| if (c == '\n') { | ||
| *r += HI_RESET; | ||
| *r += c; | ||
| t_ = NORMAL; | ||
| } else { | ||
| *r += c; | ||
| } | ||
| break; | ||
|
|
||
| case SLASH_STAR: | ||
| *r += c; | ||
| if (c == '*') | ||
| t_ = SLASH_STAR_STAR; | ||
| break; | ||
|
|
||
| case SLASH_STAR_STAR: | ||
| *r += c; | ||
| if (c == '/') { | ||
| *r += HI_RESET; | ||
| t_ = NORMAL; | ||
| } else if (c != '*') { | ||
| t_ = SLASH_STAR; | ||
| } | ||
| break; | ||
|
|
||
| case QUOTE: | ||
| *r += c; | ||
| if (c == '\'') { | ||
| *r += HI_RESET; | ||
| t_ = NORMAL; | ||
| } else if (c == '\\') { | ||
| t_ = QUOTE_BACKSLASH; | ||
| } | ||
| break; | ||
|
|
||
| case QUOTE_BACKSLASH: | ||
| *r += c; | ||
| t_ = QUOTE; | ||
| break; | ||
|
|
||
| case DQUOTE: | ||
| *r += c; | ||
| if (c == '"') { | ||
| t_ = DQUOTE_DQUOTE; | ||
| } else if (c == '\\') { | ||
| t_ = STR_BACKSLASH; | ||
| } else { | ||
| t_ = STR; | ||
| } | ||
| break; | ||
|
|
||
| case STR: | ||
| *r += c; | ||
| if (c == '"') { | ||
| *r += HI_RESET; | ||
| t_ = NORMAL; | ||
| } else if (c == '\\') { | ||
| t_ = STR_BACKSLASH; | ||
| } | ||
| break; | ||
|
|
||
| case STR_BACKSLASH: | ||
| *r += c; | ||
| t_ = STR; | ||
| break; | ||
|
|
||
| case DQUOTE_DQUOTE: | ||
| if (c == '"') { | ||
| *r += c; | ||
| t_ = DQUOTE_DQUOTE_DQUOTE; | ||
| trips1_ = 3; | ||
| trips2_ = 0; | ||
| } else { | ||
| *r += HI_RESET; | ||
| t_ = NORMAL; | ||
| goto Normal; | ||
| } | ||
| break; | ||
|
|
||
| case DQUOTE_DQUOTE_DQUOTE: | ||
| if (c == '"') { | ||
| *r += c; | ||
| ++trips1_; | ||
| if (++trips2_ == 3) { | ||
| *r += HI_RESET; | ||
| t_ = NORMAL; | ||
| } | ||
| break; | ||
| } else { | ||
| trips2_ = 0; | ||
| t_ = TRIPS; | ||
| } | ||
| // fallthrough | ||
|
|
||
| case TRIPS: | ||
| *r += c; | ||
| if (c == '"') { | ||
| t_ = TRIPS_DQUOTE; | ||
| trips2_ = 1; | ||
| } | ||
| break; | ||
|
|
||
| case TRIPS_DQUOTE: | ||
| *r += c; | ||
| if (c == '"') { | ||
| if (++trips2_ == trips1_) { | ||
| *r += HI_RESET; | ||
| t_ = NORMAL; | ||
| } | ||
| } else { | ||
| t_ = TRIPS; | ||
| } | ||
| break; | ||
|
|
||
| default: | ||
| __builtin_unreachable(); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| void HighlightCsharp::flush(std::string *r) { | ||
| switch (t_) { | ||
| case WORD: | ||
| if (is_keyword_csharp(word_.data(), word_.size())) { | ||
| *r += HI_KEYWORD; | ||
| *r += word_; | ||
| *r += HI_RESET; | ||
| } else if (is_keyword_csharp_constant(word_.data(), word_.size())) { | ||
| *r += HI_CONSTANT; | ||
| *r += word_; | ||
| *r += HI_RESET; | ||
| } else { | ||
| *r += word_; | ||
| } | ||
| word_.clear(); | ||
| break; | ||
| case SLASH: | ||
| *r += '/'; | ||
| break; | ||
| case QUOTE: | ||
| case QUOTE_BACKSLASH: | ||
| case DQUOTE: | ||
| case STR: | ||
| case STR_BACKSLASH: | ||
| case DQUOTE_DQUOTE: | ||
| case DQUOTE_DQUOTE_DQUOTE: | ||
| case TRIPS: | ||
| case TRIPS_DQUOTE: | ||
| case SLASH_SLASH: | ||
| case SLASH_STAR: | ||
| case SLASH_STAR_STAR: | ||
| *r += HI_RESET; | ||
| break; | ||
| default: | ||
| break; | ||
| } | ||
| t_ = NORMAL; | ||
| } |
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