val_highlight 0.1.0

Syntax highlighting for 55 languages in pure Dart. Incremental updates, themes, VS Code theme import, and HTML output. Runs on every platform.

0.1.0

First release.

val_highlight is a syntax highlighter written in pure Dart. It runs anywhere Dart runs — the VM, Flutter on every platform, and the web — and is the shared core of val_highlight_flutter.

Added

• 55 languages — Dart, Kotlin, Swift, Java, Objective-C, C, C++, C#, Go, Rust, Zig, JavaScript, TypeScript, JSX, TSX, HTML (with embedded CSS and JavaScript, including .vue and .svelte), CSS, SCSS, Less, PHP, Python, Ruby, Lua, Perl, Bash, PowerShell, Batch, R, Julia, Elixir, Erlang, Haskell, OCaml, F#, Scala, Clojure, Groovy / Gradle, SQL, JSON, YAML, TOML, XML, INI / properties, Protobuf, GraphQL, HCL / Terraform, nginx, Dockerfile, Makefile, CMake, Markdown (fenced code in any language), LaTeX, NASM, Solidity and diff.
• genericLanguage — a fallback that highlights code in any language reasonably, and plainTextLanguage.
• Incremental highlighting — IncrementalHighlighter re-scans only what an edit can affect.
• Flat token output — tokens as two integer lists with a shared scope table, plus a line API for renderers.
• 8 themes — light, dark, sepia, dim, midnight, forest, high-contrast light and dark. Every colour meets WCAG AA contrast.
• VS Code themes — ValTheme.fromVsCode and ValTheme.fromVsCodeJson.
• HTML output — CSS classes with ValTheme.toCss, or inline styles.
• Language detection — LanguageDetector, by file name, shebang and content.
• Grammar building blocks — LineComment, BlockComment, QuotedString, Interpolation, Numbers, Operators, Annotation, Preprocessor and CommonRules, so most grammars need no regular expressions. Extend BlockRule for your own.
• Customisation — Grammar.extend, Grammar.withKeywords, ValTheme.extend, and LanguageRegistry with fallbacks and file-name matching.