Negate tries to negate the underlying value. It's mainly used for the NOT-operator and in conjunction with a call to return_value.IsTrue() afterwards. Example: AsValue(1).Negate().IsTrue() == false
()
| 241 | // Example: |
| 242 | // AsValue(1).Negate().IsTrue() == false |
| 243 | func (v *Value) Negate() *Value { |
| 244 | switch v.getResolvedValue().Kind() { |
| 245 | case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, |
| 246 | reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64: |
| 247 | if v.Integer() != 0 { |
| 248 | return AsValue(0) |
| 249 | } |
| 250 | return AsValue(1) |
| 251 | case reflect.Float32, reflect.Float64: |
| 252 | if v.Float() != 0.0 { |
| 253 | return AsValue(float64(0.0)) |
| 254 | } |
| 255 | return AsValue(float64(1.1)) |
| 256 | case reflect.Array, reflect.Chan, reflect.Map, reflect.Slice, reflect.String: |
| 257 | return AsValue(v.getResolvedValue().Len() == 0) |
| 258 | case reflect.Bool: |
| 259 | return AsValue(!v.getResolvedValue().Bool()) |
| 260 | case reflect.Struct: |
| 261 | return AsValue(false) |
| 262 | default: |
| 263 | logf("Value.IsTrue() not available for type: %s\n", v.getResolvedValue().Kind().String()) |
| 264 | return AsValue(true) |
| 265 | } |
| 266 | } |
| 267 | |
| 268 | // Len returns the length for an array, chan, map, slice or string. |
| 269 | // Otherwise it will return 0. |