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@aehrc/ecl-lsp-server

v1.1.2

Published

LSP server for SNOMED CT Expression Constraint Language

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johngrimesjohngrimesdionmcmdionmcmjgsuessjgsuess

Keywords

Readme

ecl-lsp-server

Language Server Protocol (LSP) server for SNOMED CT Expression Constraint Language (ECL) 2.2. Provides diagnostics, completion, hover, formatting, code actions, code lens, and semantic tokens.

Built on ecl-core — this package is a thin LSP adapter that maps core types to the LSP protocol.

Install

npm install -g ecl-lsp-server

Usage

ecl-lsp-server --stdio

The server communicates over stdio using the LSP protocol. Connect it to any LSP-capable editor.

LSP Capabilities

| Capability | Description | | ----------------------------------- | ------------------------------------------------------------------------------------ | | textDocument/diagnostics | Syntax errors, inactive/unknown concept warnings, semantic validation | | textDocument/completion | Context-aware operators, keywords, filter values, SNOMED CT concept search, snippets | | textDocument/hover | Operator documentation, concept information (FSN, PT, active status) | | textDocument/formatting | Document formatting with 9 configurable options | | textDocument/rangeFormatting | Format a selection | | textDocument/codeAction | 8 refactoring actions (strip/add terms, simplify, parentheses, history, filter) | | textDocument/codeLens | "Evaluate" lens above each expression with inline result count | | textDocument/semanticTokens | Token-level highlighting | | Custom: ecl/searchConcept | SNOMED CT concept search via FHIR | | Custom: ecl/getSnomedEditions | List available SNOMED CT editions | | Custom: ecl/resolvedSnomedVersion | Notification when SNOMED version is resolved |

Configuration

The server reads settings from workspace/configuration requests under the ecl namespace.

Terminology

| Setting | Default | Description | | ------------------------------- | ------------------------------------- | ----------------------------- | | ecl.terminology.serverUrl | https://tx.ontoserver.csiro.au/fhir | FHIR terminology server URL | | ecl.terminology.timeout | 2000 | Concept lookup timeout (ms) | | ecl.terminology.snomedVersion | "" (server default) | SNOMED CT edition/version URI |

Semantic Validation

| Setting | Default | Description | | -------------------------------- | ------- | -------------------------------------------------------------------------------------- | | ecl.semanticValidation.enabled | true | Enable semantic validation (attribute scope, value constraints, empty sub-expressions) |

Evaluation

| Setting | Default | Description | | ---------------------------- | ------- | -------------------------------------------------------------- | | ecl.evaluation.resultLimit | 200 | Max concepts returned when evaluating an expression (1–10,000) |

Formatting

| Setting | Default | Description | | --------------------------------------- | ------- | ------------------------------------------- | | ecl.formatting.indentSize | 2 | Spaces per indent level (1–8) | | ecl.formatting.indentStyle | space | space or tab | | ecl.formatting.spaceAroundOperators | true | Spaces around AND/OR/MINUS | | ecl.formatting.maxLineLength | 80 | Line length before breaking (0 = unlimited) | | ecl.formatting.alignTerms | true | Vertically align term pipes | | ecl.formatting.wrapComments | false | Wrap long line comments | | ecl.formatting.breakOnOperators | false | Newline before AND/OR/MINUS | | ecl.formatting.breakOnRefinementComma | false | Newline after refinement commas | | ecl.formatting.breakAfterColon | false | Newline after refinement colon |

IDE Clients

| Editor | Link | | ------------- | ------------------------------------------------- | | VSCode | clients/vscode | | IntelliJ IDEA | clients/intellij | | Eclipse | clients/eclipse | | Neovim | clients/neovim | | Sublime Text | clients/sublime | | Emacs | clients/emacs | | Claude Code | clients/claude-code |

License

Copyright 2026 Commonwealth Scientific and Industrial Research Organisation (CSIRO) ABN 41 687 119 230

Apache License 2.0 — see LICENSE.