implement string, float, complex

generator.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"errors"
+	"math"
 	"reflect"
 )
 
@@ -42,6 +43,49 @@ func (g *Generator) fillAny(any reflect.Value) error {
 			return err
 		}
 
+	case reflect.String:
+		str, err := g.GenerateString()
+		if err != nil {
+			return err
+		}
+		any.SetString(str)
+
+	case reflect.Float32:
+		newFloat, err := g.GenerateFloat32()
+		if err != nil {
+			return err
+		}
+		any.SetFloat(float64(newFloat))
+
+	case reflect.Float64:
+		newFloat, err := g.GenerateFloat64()
+		if err != nil {
+			return err
+		}
+		any.SetFloat(float64(newFloat))
+
+	case reflect.Complex64:
+		newFloatReal, err := g.GenerateFloat32()
+		if err != nil {
+			return err
+		}
+		newFloatImag, err := g.GenerateFloat32()
+		if err != nil {
+			return err
+		}
+		any.SetComplex(complex(float64(newFloatReal), float64(newFloatImag)))
+
+	case reflect.Complex128:
+		newFloatReal, err := g.GenerateFloat64()
+		if err != nil {
+			return err
+		}
+		newFloatImag, err := g.GenerateFloat64()
+		if err != nil {
+			return err
+		}
+		any.SetComplex(complex(newFloatReal, newFloatImag))
+
 	default:
 		panic("unhandled default case")
 	}
@@ -61,3 +105,83 @@ func (g *Generator) GenerateInt() (int, error) {
 	g.position++
 	return result, nil
 }
+
+func (g *Generator) GenerateUInt32() (uint32, error) {
+	if g.position+3 >= g.dataSize {
+		return 0, errors.New("the data bytes are over")
+	}
+	result := uint32(0)
+	for i := 0; i < 4; i++ {
+		result = result<<8 | uint32(g.data[g.position])
+		g.position++
+	}
+	return result, nil
+}
+
+func (g *Generator) GenerateString() (string, error) {
+	maxStrLength := uint32(2000000)
+
+	if g.position >= g.dataSize {
+		return "nil", errors.New("the data bytes are over")
+	}
+
+	length, err := g.GenerateUInt32()
+	if err != nil {
+		return "nil", errors.New("the data bytes are over")
+	}
+
+	if g.position > maxStrLength {
+		return "nil", errors.New("the string length too large")
+	}
+
+	startBytePos := g.position
+	if startBytePos >= g.dataSize {
+		return "nil", errors.New("the data bytes are over")
+	}
+
+	if startBytePos+length > g.dataSize {
+		return "nil", errors.New("the data bytes are over")
+	}
+
+	if startBytePos > startBytePos+length {
+		return "nil", errors.New("overflow")
+	}
+
+	g.position = startBytePos + length
+	result := string(g.data[startBytePos:g.position])
+
+	return result, nil
+}
+
+func (g *Generator) GenerateFloat32() (float32, error) {
+	if g.position+3 >= g.dataSize {
+		return 0, errors.New("the data bytes are over")
+	}
+
+	bits := uint32(0)
+	for i := 0; i < 4; i++ {
+		bits = bits<<8 | uint32(g.data[g.position])
+		g.position++
+	}
+
+	floatBits := uint32(math.Float32bits(math.Float32frombits(bits)))
+	result := math.Float32frombits(floatBits)
+
+	return result, nil
+}
+
+func (g *Generator) GenerateFloat64() (float64, error) {
+	if g.position+7 >= g.dataSize {
+		return 0, errors.New("the data bytes are over")
+	}
+
+	bits := uint64(0)
+	for i := 0; i < 8; i++ {
+		bits = bits<<8 | uint64(g.data[g.position])
+		g.position++
+	}
+
+	result := math.Float64frombits(bits)
+
+	return result, nil
+}

main.go

@@ -13,6 +13,20 @@ type Struct2 struct {
 	Field2 Struct1
 }
 
+type Struct3 struct {
+	Field1 string
+	Field2 float32
+	Field3 float64
+	Field4 complex64
+	Field5 complex128
+}
+
+type Struct4 struct {
+	Field1 [5]int
+	Field2 map[string]int
+	Field3 func()
+}
+
 func main() {
 
 }