ConvertValue converts an encoding/json value into a Mangle value.
(value any)
| 45 | |
| 46 | // ConvertValue converts an encoding/json value into a Mangle value. |
| 47 | func ConvertValue(value any) (ast.Constant, error) { |
| 48 | switch value := value.(type) { |
| 49 | case string: |
| 50 | return ast.String(value), nil |
| 51 | case float64: |
| 52 | return ast.Float64(value), nil |
| 53 | case bool: |
| 54 | if value { |
| 55 | return ast.TrueConstant, nil |
| 56 | } |
| 57 | return ast.FalseConstant, nil |
| 58 | case []any: |
| 59 | l := &ast.ListNil |
| 60 | for i := len(value) - 1; i >= 0; i-- { |
| 61 | value, err := ConvertValue(value[i]) |
| 62 | if err != nil { |
| 63 | return ast.Constant{}, err |
| 64 | } |
| 65 | next := ast.ListCons(&value, l) |
| 66 | l = &next |
| 67 | } |
| 68 | return *l, nil |
| 69 | case map[string]any: |
| 70 | structEntries := map[*ast.Constant]*ast.Constant{} |
| 71 | for k, v := range value { |
| 72 | fieldName, err := ast.Name("/" + k) |
| 73 | if err != nil { |
| 74 | return ast.Constant{}, err |
| 75 | } |
| 76 | value, err := ConvertValue(v) |
| 77 | if err != nil { |
| 78 | return ast.Constant{}, err |
| 79 | } |
| 80 | structEntries[&fieldName] = &value |
| 81 | } |
| 82 | return *ast.Struct(structEntries), nil |
| 83 | default: |
| 84 | return ast.Constant{}, fmt.Errorf("unexpected value %v type %T: ", value, value) |
| 85 | } |
| 86 | } |