1 files changed, 138 insertions, 0 deletions
diff --git a/vendor/github.com/d5/tengo/v2/stdlib/rand.go b/vendor/github.com/d5/tengo/v2/stdlib/rand.go
new file mode 100644
index 00000000..5d21e1df
--- /dev/null
+++ b/vendor/github.com/d5/tengo/v2/stdlib/rand.go
@@ -0,0 +1,138 @@
+package stdlib
+
+import (
+	"math/rand"
+
+	"github.com/d5/tengo/v2"
+)
+
+var randModule = map[string]tengo.Object{
+	"int": &tengo.UserFunction{
+		Name:  "int",
+		Value: FuncARI64(rand.Int63),
+	},
+	"float": &tengo.UserFunction{
+		Name:  "float",
+		Value: FuncARF(rand.Float64),
+	},
+	"intn": &tengo.UserFunction{
+		Name:  "intn",
+		Value: FuncAI64RI64(rand.Int63n),
+	},
+	"exp_float": &tengo.UserFunction{
+		Name:  "exp_float",
+		Value: FuncARF(rand.ExpFloat64),
+	},
+	"norm_float": &tengo.UserFunction{
+		Name:  "norm_float",
+		Value: FuncARF(rand.NormFloat64),
+	},
+	"perm": &tengo.UserFunction{
+		Name:  "perm",
+		Value: FuncAIRIs(rand.Perm),
+	},
+	"seed": &tengo.UserFunction{
+		Name:  "seed",
+		Value: FuncAI64R(rand.Seed),
+	},
+	"read": &tengo.UserFunction{
+		Name: "read",
+		Value: func(args ...tengo.Object) (ret tengo.Object, err error) {
+			if len(args) != 1 {
+				return nil, tengo.ErrWrongNumArguments
+			}
+			y1, ok := args[0].(*tengo.Bytes)
+			if !ok {
+				return nil, tengo.ErrInvalidArgumentType{
+					Name:     "first",
+					Expected: "bytes",
+					Found:    args[0].TypeName(),
+				}
+			}
+			res, err := rand.Read(y1.Value)
+			if err != nil {
+				ret = wrapError(err)
+				return
+			}
+			return &tengo.Int{Value: int64(res)}, nil
+		},
+	},
+	"rand": &tengo.UserFunction{
+		Name: "rand",
+		Value: func(args ...tengo.Object) (tengo.Object, error) {
+			if len(args) != 1 {
+				return nil, tengo.ErrWrongNumArguments
+			}
+			i1, ok := tengo.ToInt64(args[0])
+			if !ok {
+				return nil, tengo.ErrInvalidArgumentType{
+					Name:     "first",
+					Expected: "int(compatible)",
+					Found:    args[0].TypeName(),
+				}
+			}
+			src := rand.NewSource(i1)
+			return randRand(rand.New(src)), nil
+		},
+	},
+}
+
+func randRand(r *rand.Rand) *tengo.ImmutableMap {
+	return &tengo.ImmutableMap{
+		Value: map[string]tengo.Object{
+			"int": &tengo.UserFunction{
+				Name:  "int",
+				Value: FuncARI64(r.Int63),
+			},
+			"float": &tengo.UserFunction{
+				Name:  "float",
+				Value: FuncARF(r.Float64),
+			},
+			"intn": &tengo.UserFunction{
+				Name:  "intn",
+				Value: FuncAI64RI64(r.Int63n),
+			},
+			"exp_float": &tengo.UserFunction{
+				Name:  "exp_float",
+				Value: FuncARF(r.ExpFloat64),
+			},
+			"norm_float": &tengo.UserFunction{
+				Name:  "norm_float",
+				Value: FuncARF(r.NormFloat64),
+			},
+			"perm": &tengo.UserFunction{
+				Name:  "perm",
+				Value: FuncAIRIs(r.Perm),
+			},
+			"seed": &tengo.UserFunction{
+				Name:  "seed",
+				Value: FuncAI64R(r.Seed),
+			},
+			"read": &tengo.UserFunction{
+				Name: "read",
+				Value: func(args ...tengo.Object) (
+					ret tengo.Object,
+					err error,
+				) {
+					if len(args) != 1 {
+						return nil, tengo.ErrWrongNumArguments
+					}
+					y1, ok := args[0].(*tengo.Bytes)
+					if !ok {
+						return nil, tengo.ErrInvalidArgumentType{
+							Name:     "first",
+							Expected: "bytes",
+							Found:    args[0].TypeName(),
+						}
+					}
+					res, err := r.Read(y1.Value)
+					if err != nil {
+						ret = wrapError(err)
+						return
+					}
+					return &tengo.Int{Value: int64(res)}, nil
+				},
+			},
+		},
+	}
+}