tree-sitter-hcl

tree-sitter grammar for the HCL language

Example

Highlighting example/example.hcl:

Developing

It is recommended to use nix to fulfill all development dependencies. To activate the development environment simply run nix-shell in the project root.

Running Tests

To run tests simply run nix-shell --run 'tree-sitter test'.

Compliance

The directory example/real_world_stuff contains a corpus of hcl files that I found with the github query language:HCL for users coreos, hashicorp, oracle and terraform-community-modules.

tree-sitter parse --quiet --stat example/real_world_stuff/*/*

Total parses: 1892; successful parses: 1892; failed parses: 0; success percentage: 100.00%

The aim is to build unit testcases from selected failure classes and slowly get to 100%.

Todo

use Unicode® Standard Annex #31 (augmented with '-') for identifiers
- allow starting '_' also, not to spec but terraform allows it
add template expressions
- add quoted templates
  - add quoted template interpolations
  - add quoted template directives
- add heredoc templates

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