Function showVarRefsJSON

cmd/hcldec/main.go:262–365

(vars []hcl.Traversal, ctx *hcl.EvalContext)

}

func showVarRefsJSON(vars []hcl.Traversal, ctx *hcl.EvalContext) error {
	type PosJSON struct {
		Line   int `json:"line"`
		Column int `json:"column"`
		Byte   int `json:"byte"`
	}
	type RangeJSON struct {
		Filename string  `json:"filename"`
		Start    PosJSON `json:"start"`
		End      PosJSON `json:"end"`
	}
	type StepJSON struct {
		Kind  string          `json:"kind"`
		Name  string          `json:"name,omitempty"`
		Key   json.RawMessage `json:"key,omitempty"`
		Range RangeJSON       `json:"range"`
	}
	type TraversalJSON struct {
		RootName string          `json:"root_name"`
		Value    json.RawMessage `json:"value,omitempty"`
		Steps    []StepJSON      `json:"steps"`
		Range    RangeJSON       `json:"range"`
	}

	ret := make([]TraversalJSON, 0, len(vars))
	for _, traversal := range vars {
		tJSON := TraversalJSON{
			Steps: make([]StepJSON, 0, len(traversal)),
		}

		for _, step := range traversal {
			var sJSON StepJSON
			rng := step.SourceRange()
			sJSON.Range.Filename = rng.Filename
			sJSON.Range.Start.Line = rng.Start.Line
			sJSON.Range.Start.Column = rng.Start.Column
			sJSON.Range.Start.Byte = rng.Start.Byte
			sJSON.Range.End.Line = rng.End.Line
			sJSON.Range.End.Column = rng.End.Column
			sJSON.Range.End.Byte = rng.End.Byte
			switch ts := step.(type) {
			case hcl.TraverseRoot:
				sJSON.Kind = "root"
				sJSON.Name = ts.Name
				tJSON.RootName = ts.Name
			case hcl.TraverseAttr:
				sJSON.Kind = "attr"
				sJSON.Name = ts.Name
			case hcl.TraverseIndex:
				sJSON.Kind = "index"
				src, err := ctyjson.Marshal(ts.Key, ts.Key.Type())
				if err == nil {
					sJSON.Key = json.RawMessage(src)
				}
			default:
				// Should never get here, since the above should be exhaustive
				// for all possible traversal step types.
				sJSON.Kind = "(unknown)"