wcl eval

Evaluate a WCL document and print the fully resolved output.

Usage

wcl eval <file> [options]

Options

Description

wcl eval runs the full evaluation pipeline and serializes the resulting document to the requested format. All macros are expanded, all expressions evaluated, all imports merged, and all partial blocks resolved before output is produced.

The output represents the final, fully-resolved state of the document — suitable for consumption by tools that do not understand WCL natively.

Examples

Evaluate and print as JSON (default):

wcl eval config.wcl

Evaluate and print as YAML:

wcl eval config.wcl --format yaml

Evaluate and print as TOML:

wcl eval config.wcl --format toml

Override variables:

wcl eval --var PORT=8080 --var DEBUG=true config.wcl

Pipe output to another tool:

wcl eval config.wcl | jq '.service'

Example Output

Given:

let base_port = 8000

service svc-api {
  port = base_port + 80
  host = "localhost"
}

Running wcl eval config.wcl produces:

{
  "service": {
    "svc-api": {
      "port": 8080,
      "host": "localhost"
    }
  }
}