mirror of https://github.com/prometheus/prometheus
44 lines
1.4 KiB
Markdown
44 lines
1.4 KiB
Markdown
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# lezer-promql
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## Overview
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This is a PromQL grammar for the [lezer](https://lezer.codemirror.net/) parser system. It is inspired by the initial
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grammar coming from [Prometheus](https://github.com/prometheus/prometheus/blob/main/promql/parser/generated_parser.y)
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written in yacc.
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This library is stable but doesn't provide any guideline of how to use it as it has been integrated
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into [codemirror-promql](https://github.com/prometheus/prometheus/blob/main/web/ui/module/codemirror-promql). If you
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want to use this library, you perhaps want to actually use **@prometheus-io/codemirror-promql** instead.
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**Note**: This library is a lezer-based implementation of the [authoritative, goyacc-based PromQL grammar](https://github.com/prometheus/prometheus/blob/main/promql/parser/generated_parser.y).
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Any changes to the authoritative grammar need to be reflected in this package as well.
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## Installation
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This package is available as an npm package:
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```bash
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npm install --save @prometheus-io/lezer-promql
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```
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**Note**: you will have to manually install the `lezer` dependencies as it is a peer dependency to this package.
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```bash
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npm install --save @lezer/lr @lezer/highlight
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```
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## Development
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### Building
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npm i
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npm run build
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### Testing
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npm run test
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## License
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The code is licensed under an [Apache 2.0](https://github.com/prometheus/prometheus/blob/main/LICENSE) license.
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