RECALL Language — VS Code Extension

Syntax highlighting, diagnostics, autocomplete, hover, go-to-definition, and rename for .rcl files.

RECALL is a COBOL-inspired compiler for the web. This extension gives .rcl files first-class editor support in VS Code, powered by the RECALL Language Server.

---

Features

Syntax highlighting

Full TextMate grammar for .rcl files:

• Division and section headers (IDENTIFICATION DIVISION., PROCEDURE DIVISION.)
• Identification keywords (PROGRAM-ID., DATE-WRITTEN., AUTHOR.)
• Data level numbers and field names (01 HERO-HEADING)
• PIC types (PIC X(60), PIC DATE, PIC PCT)
• Element names (HEADING-1, PARAGRAPH, CARD-LIST, CALLOUT)
• WITH INTENT — distinct colour from other clause keywords
• String literals, numeric constants
• AUDIT DIVISION keywords (CREATED-BY., CHANGE-LOG.)
• Line comments (*)

Inline diagnostics

All 33 RCL diagnostic codes surfaced as you type — no compile step required. Errors and warnings appear as squiggles with the RCL code in the source annotation.

Because VS Code Copilot and Cursor both consume LSP diagnostics, RECALL field types and contract violations are visible to AI coding assistants.

Autocomplete

Context-aware completions:

Context	Candidates
After DISPLAY	All RECALL element names
After PIC	PIC types (X(n), DATE, URL, PCT, BOOL, ...)
After WITH DATA / USING	Live DATA DIVISION field names from the current file
Inside PROCEDURE DIVISION	Element names + clause keywords
Top level	Division and section keywords

Hover

Hover over any DATA DIVISION field reference to see:

HERO-HEADING — DATA DIVISION field
• PIC: X(60)
• VALUE: "BUILT FOR THE AI ERA."
• COMMENT: opening line — keep punchy

Hover over an element name to see its description and usage.

Go-to-definition

Press F12 on any field reference in the PROCEDURE DIVISION to jump directly to its 01 declaration in the DATA DIVISION.

Rename

Press F2 on a DATA field name to rename it everywhere in the file simultaneously.

---

Installation

From the marketplace

Search for RECALL Language in the VS Code Extensions panel, or:

code --install-extension semanticintent.recall-language

From source

git clone https://github.com/semanticintent/recall-vscode
cd recall-vscode
npm install
npm run build

Press F5 in VS Code to launch an Extension Development Host with the extension loaded.

---

Release notes

0.1.0

• Full TextMate grammar — all RECALL syntax constructs including AUDIT DIVISION
• LSP client wired to @semanticintent/recall-lsp
• Diagnostics, autocomplete, hover, go-to-definition, rename

---

Related

Repo	Description
recall-compiler	The RECALL compiler — parser, type-checker, generator, CLI
recall-lsp	The LSP server this extension uses

---

License

MIT © semanticintent