Method hcldecTransform

cmd/hclspecsuite/runner.go:313–361

(specFile, inputFile string)

}

func (r *Runner) hcldecTransform(specFile, inputFile string) (cty.Value, hcl.Diagnostics) {
	var diags hcl.Diagnostics
	var outBuffer bytes.Buffer
	var errBuffer bytes.Buffer

	cmd := &exec.Cmd{
		Path: r.hcldecPath,
		Args: []string{
			r.hcldecPath,
			"--spec=" + specFile,
			"--diags=json",
			"--with-type",
			"--keep-nulls",
			inputFile,
		},
		Stdout: &outBuffer,
		Stderr: &errBuffer,
	}
	err := cmd.Run()
	if err != nil {
		if _, isExit := err.(*exec.ExitError); !isExit {
			diags = append(diags, &hcl.Diagnostic{
				Severity: hcl.DiagError,
				Summary:  "Failed to run hcldec",
				Detail:   fmt.Sprintf("Sub-program hcldec failed to start: %s.", err),
			})
			return cty.DynamicVal, diags
		}

		// If we exited unsuccessfully then we'll expect diagnostics on stderr
		moreDiags := decodeJSONDiagnostics(errBuffer.Bytes())
		diags = append(diags, moreDiags...)
		return cty.DynamicVal, diags
	} else {
		// Otherwise, we expect a JSON result value on stdout. Since we used
		// --with-type above, we can decode as DynamicPseudoType to recover
		// exactly the type that was saved, without the usual JSON lossiness.
		val, err := ctyjson.Unmarshal(outBuffer.Bytes(), cty.DynamicPseudoType)
		if err != nil {
			diags = append(diags, &hcl.Diagnostic{
				Severity: hcl.DiagError,
				Summary:  "Failed to parse hcldec result",
				Detail:   fmt.Sprintf("Sub-program hcldec produced an invalid result: %s.", err),
			})
			return cty.DynamicVal, diags
		}
		return val, diags
	}
}

func (r *Runner) hcldecVariables(specFile, inputFile string) ([]hcl.Traversal, hcl.Diagnostics) {
	var diags hcl.Diagnostics