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JustCode for JustMC (JMCC)

JustCode for JustMC (JMCC)

jmcc

|
3 installs
| (0) | Free
Full Language Server (diagnostics, IntelliSense, definitions, hover, rename, semantic tokens) and syntax highlighting for JustCode (.jc)
Installation
Launch VS Code Quick Open (Ctrl+P), paste the following command, and press enter.
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More Info

JMC Analyzer

[!NOTE] The Russian version of this document is available at README_RU.md.

VS Code extension and Language Server (LSP) for the JustCode (.jc) programming language from the JMCC compiler.

Provides full parity for both English (Modern) and Russian (Alternate) JustCode syntax (while/for, lambdas, match, try/catch, classes, interfaces, export, loop labels, Russian keywords and type annotations).

Features

1. Syntax Highlighting

  • Precise TextMate grammar for keywords, types, JustMC actions, operators, and string interpolation ($var and ${expr}).
  • Full support for Russian syntax (функция, класс, пусть, перем, если, выбор, не, и, или, в, как, etc.).
  • Semantic Tokens via LSP in UTF-16 code units with accurate Cyrillic offset handling.

2. Language Server (LSP)

The built-in Language Server provides rich IDE capabilities:

  • On-the-fly Diagnostics: Syntax, type, and semantic validation as you type with warnings (e.g., deprecated elif) and localized messages (RU/EN).
  • Type Inference and Inlay Hints: Displays inferred types for unannotated variables (: text, : number for English code; : текст, : число for Russian code) and argument names for actions, functions, and constructors.
  • Hover Information: Signatures, inferred types, variable scope annotations, aliases, and bilingual doc comments (/// RU: / /// EN:).
  • Go to Definition: Navigation for classes, interfaces, enums, enum variants, functions, methods, and variables.
  • References & Document Highlight: Finds references and highlights symbol usages across documents.
  • Rename: Safe symbol renaming across the workspace.
  • Document & Workspace Symbols: Outlines and search with class/method hierarchy.
  • Completion (IntelliSense): Actions, properties, methods, and global symbols.
  • Signature Help: Parameter prompts when calling actions and methods.
  • Document Formatting: Built-in code formatting via the compiler's formatter.

Building and Installation

Package the extension with jmc-analyzer:

cargo run -p jmc-analyzer -- pack

The resulting .vsix file is placed in jmc-analyzer/out/justcode-lang-<version>.vsix. Install in VS Code:

code --install-extension jmc-analyzer/out/justcode-lang-0.1.0.vsix
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