6 files changed, 84 insertions, 15 deletions
diff --git a/vendor/github.com/d5/tengo/v2/compiler.go b/vendor/github.com/d5/tengo/v2/compiler.go
index cb1c8f30..1937a1d6 100644
--- a/vendor/github.com/d5/tengo/v2/compiler.go
+++ b/vendor/github.com/d5/tengo/v2/compiler.go
@@ -506,7 +506,11 @@ func (c *Compiler) Compile(node parser.Node) error {
 				return err
 			}
 		}
-		c.emit(node, parser.OpCall, len(node.Args))
+		ellipsis := 0
+		if node.Ellipsis.IsValid() {
+			ellipsis = 1
+		}
+		c.emit(node, parser.OpCall, len(node.Args), ellipsis)
 	case *parser.ImportExpr:
 		if node.ModuleName == "" {
 			return c.errorf(node, "empty module name")
@@ -526,7 +530,7 @@ func (c *Compiler) Compile(node parser.Node) error {
 					return err
 				}
 				c.emit(node, parser.OpConstant, c.addConstant(compiled))
-				c.emit(node, parser.OpCall, 0)
+				c.emit(node, parser.OpCall, 0, 0)
 			case Object: // builtin module
 				c.emit(node, parser.OpConstant, c.addConstant(v))
 			default:
@@ -556,7 +560,7 @@ func (c *Compiler) Compile(node parser.Node) error {
 				return err
 			}
 			c.emit(node, parser.OpConstant, c.addConstant(compiled))
-			c.emit(node, parser.OpCall, 0)
+			c.emit(node, parser.OpCall, 0, 0)
 		} else {
 			return c.errorf(node, "module '%s' not found", node.ModuleName)
 		}
diff --git a/vendor/github.com/d5/tengo/v2/objects.go b/vendor/github.com/d5/tengo/v2/objects.go
index 27c1d493..30913db5 100644
--- a/vendor/github.com/d5/tengo/v2/objects.go
+++ b/vendor/github.com/d5/tengo/v2/objects.go
@@ -1342,6 +1342,38 @@ func (o *String) BinaryOp(op token.Token, rhs Object) (Object, error) {
 			}
 			return &String{Value: o.Value + rhsStr}, nil
 		}
+	case token.Less:
+		switch rhs := rhs.(type) {
+		case *String:
+			if o.Value < rhs.Value {
+				return TrueValue, nil
+			}
+			return FalseValue, nil
+		}
+	case token.LessEq:
+		switch rhs := rhs.(type) {
+		case *String:
+			if o.Value <= rhs.Value {
+				return TrueValue, nil
+			}
+			return FalseValue, nil
+		}
+	case token.Greater:
+		switch rhs := rhs.(type) {
+		case *String:
+			if o.Value > rhs.Value {
+				return TrueValue, nil
+			}
+			return FalseValue, nil
+		}
+	case token.GreaterEq:
+		switch rhs := rhs.(type) {
+		case *String:
+			if o.Value >= rhs.Value {
+				return TrueValue, nil
+			}
+			return FalseValue, nil
+		}
 	}
 	return nil, ErrInvalidOperator
 }
diff --git a/vendor/github.com/d5/tengo/v2/parser/expr.go b/vendor/github.com/d5/tengo/v2/parser/expr.go
index 71e5155b..b6b6c62b 100644
--- a/vendor/github.com/d5/tengo/v2/parser/expr.go
+++ b/vendor/github.com/d5/tengo/v2/parser/expr.go
@@ -111,10 +111,11 @@ func (e *BoolLit) String() string {
 
 // CallExpr represents a function call expression.
 type CallExpr struct {
-	Func   Expr
-	LParen Pos
-	Args   []Expr
-	RParen Pos
+	Func     Expr
+	LParen   Pos
+	Args     []Expr
+	Ellipsis Pos
+	RParen   Pos
 }
 
 func (e *CallExpr) exprNode() {}
@@ -134,6 +135,9 @@ func (e *CallExpr) String() string {
 	for _, e := range e.Args {
 		args = append(args, e.String())
 	}
+	if len(args) > 0 && e.Ellipsis.IsValid() {
+		args[len(args)-1] = args[len(args)-1] + "..."
+	}
 	return e.Func.String() + "(" + strings.Join(args, ", ") + ")"
 }
 
diff --git a/vendor/github.com/d5/tengo/v2/parser/opcodes.go b/vendor/github.com/d5/tengo/v2/parser/opcodes.go
index a4fbfbaf..d97f4896 100644
--- a/vendor/github.com/d5/tengo/v2/parser/opcodes.go
+++ b/vendor/github.com/d5/tengo/v2/parser/opcodes.go
@@ -120,7 +120,7 @@ var OpcodeOperands = [...][]int{
 	OpImmutable:     {},
 	OpIndex:         {},
 	OpSliceIndex:    {},
-	OpCall:          {1},
+	OpCall:          {1, 1},
 	OpReturn:        {1},
 	OpGetLocal:      {1},
 	OpSetLocal:      {1},
diff --git a/vendor/github.com/d5/tengo/v2/parser/parser.go b/vendor/github.com/d5/tengo/v2/parser/parser.go
index 501a9106..fd20423b 100644
--- a/vendor/github.com/d5/tengo/v2/parser/parser.go
+++ b/vendor/github.com/d5/tengo/v2/parser/parser.go
@@ -270,9 +270,13 @@ func (p *Parser) parseCall(x Expr) *CallExpr {
 	p.exprLevel++
 
 	var list []Expr
-	for p.token != token.RParen && p.token != token.EOF {
+	var ellipsis Pos
+	for p.token != token.RParen && p.token != token.EOF && !ellipsis.IsValid() {
 		list = append(list, p.parseExpr())
-
+		if p.token == token.Ellipsis {
+			ellipsis = p.pos
+			p.next()
+		}
 		if !p.expectComma(token.RParen, "call argument") {
 			break
 		}
@@ -281,10 +285,11 @@ func (p *Parser) parseCall(x Expr) *CallExpr {
 	p.exprLevel--
 	rparen := p.expect(token.RParen)
 	return &CallExpr{
-		Func:   x,
-		LParen: lparen,
-		RParen: rparen,
-		Args:   list,
+		Func:     x,
+		LParen:   lparen,
+		RParen:   rparen,
+		Ellipsis: ellipsis,
+		Args:     list,
 	}
 }
 
diff --git a/vendor/github.com/d5/tengo/v2/vm.go b/vendor/github.com/d5/tengo/v2/vm.go
index af8783f0..811ecef9 100644
--- a/vendor/github.com/d5/tengo/v2/vm.go
+++ b/vendor/github.com/d5/tengo/v2/vm.go
@@ -537,12 +537,36 @@ func (v *VM) run() {
 			}
 		case parser.OpCall:
 			numArgs := int(v.curInsts[v.ip+1])
-			v.ip++
+			spread := int(v.curInsts[v.ip+2])
+			v.ip += 2
+
 			value := v.stack[v.sp-1-numArgs]
 			if !value.CanCall() {
 				v.err = fmt.Errorf("not callable: %s", value.TypeName())
 				return
 			}
+
+			if spread == 1 {
+				v.sp--
+				switch arr := v.stack[v.sp].(type) {
+				case *Array:
+					for _, item := range arr.Value {
+						v.stack[v.sp] = item
+						v.sp++
+					}
+					numArgs += len(arr.Value) - 1
+				case *ImmutableArray:
+					for _, item := range arr.Value {
+						v.stack[v.sp] = item
+						v.sp++
+					}
+					numArgs += len(arr.Value) - 1
+				default:
+					v.err = fmt.Errorf("not an array: %s", arr.TypeName())
+					return
+				}
+			}
+
 			if callee, ok := value.(*CompiledFunction); ok {
 				if callee.VarArgs {
 					// if the closure is variadic,