Update vendor d5/tengo

1 files changed, 20 insertions, 4 deletions

diff --git a/vendor/github.com/d5/tengo/compiler/compiler.go b/vendor/github.com/d5/tengo/compiler/compiler.go
index 141ea8fd..d8bc05fd 100644
--- a/vendor/github.com/d5/tengo/compiler/compiler.go
+++ b/vendor/github.com/d5/tengo/compiler/compiler.go
@@ -5,11 +5,11 @@ import (
 	"io"
 	"reflect"
 
+	"github.com/d5/tengo"
 	"github.com/d5/tengo/compiler/ast"
 	"github.com/d5/tengo/compiler/source"
 	"github.com/d5/tengo/compiler/token"
 	"github.com/d5/tengo/objects"
-	"github.com/d5/tengo/stdlib"
 )
 
 // Compiler compiles the AST into a bytecode.
@@ -54,9 +54,6 @@ func NewCompiler(file *source.File, symbolTable *SymbolTable, constants []object
 	// builtin modules
 	if builtinModules == nil {
 		builtinModules = make(map[string]bool)
-		for name := range stdlib.Modules {
-			builtinModules[name] = true
-		}
 	}
 
 	return &Compiler{
@@ -195,6 +192,10 @@ func (c *Compiler) Compile(node ast.Node) error {
 		}
 
 	case *ast.StringLit:
+		if len(node.Value) > tengo.MaxStringLen {
+			return c.error(node, objects.ErrStringLimit)
+		}
+
 		c.emit(node, OpConstant, c.addConstant(&objects.String{Value: node.Value}))
 
 	case *ast.CharLit:
@@ -332,6 +333,9 @@ func (c *Compiler) Compile(node ast.Node) error {
 	case *ast.MapLit:
 		for _, elt := range node.Elements {
 			// key
+			if len(elt.Key) > tengo.MaxStringLen {
+				return c.error(node, objects.ErrStringLimit)
+			}
 			c.emit(node, OpConstant, c.addConstant(&objects.String{Value: elt.Key}))
 
 			// value
@@ -507,6 +511,10 @@ func (c *Compiler) Compile(node ast.Node) error {
 
 	case *ast.ImportExpr:
 		if c.builtinModules[node.ModuleName] {
+			if len(node.ModuleName) > tengo.MaxStringLen {
+				return c.error(node, objects.ErrStringLimit)
+			}
+
 			c.emit(node, OpConstant, c.addConstant(&objects.String{Value: node.ModuleName}))
 			c.emit(node, OpGetBuiltinModule)
 		} else {
@@ -610,6 +618,14 @@ func (c *Compiler) fork(file *source.File, moduleName string, symbolTable *Symbo
 	return child
 }
 
+func (c *Compiler) error(node ast.Node, err error) error {
+	return &Error{
+		fileSet: c.file.Set(),
+		node:    node,
+		error:   err,
+	}
+}
+
 func (c *Compiler) errorf(node ast.Node, format string, args ...interface{}) error {
 	return &Error{
 		fileSet: c.file.Set(),