1 files changed, 43 insertions, 0 deletions
diff --git a/vendor/github.com/d5/tengo/compiler/compiler_scopes.go b/vendor/github.com/d5/tengo/compiler/compiler_scopes.go
new file mode 100644
index 00000000..b63f915a
--- /dev/null
+++ b/vendor/github.com/d5/tengo/compiler/compiler_scopes.go
@@ -0,0 +1,43 @@
+package compiler
+
+import "github.com/d5/tengo/compiler/source"
+
+func (c *Compiler) currentInstructions() []byte {
+	return c.scopes[c.scopeIndex].instructions
+}
+
+func (c *Compiler) currentSourceMap() map[int]source.Pos {
+	return c.scopes[c.scopeIndex].sourceMap
+}
+
+func (c *Compiler) enterScope() {
+	scope := CompilationScope{
+		symbolInit: make(map[string]bool),
+		sourceMap:  make(map[int]source.Pos),
+	}
+
+	c.scopes = append(c.scopes, scope)
+	c.scopeIndex++
+
+	c.symbolTable = c.symbolTable.Fork(false)
+
+	if c.trace != nil {
+		c.printTrace("SCOPE", c.scopeIndex)
+	}
+}
+
+func (c *Compiler) leaveScope() (instructions []byte, sourceMap map[int]source.Pos) {
+	instructions = c.currentInstructions()
+	sourceMap = c.currentSourceMap()
+
+	c.scopes = c.scopes[:len(c.scopes)-1]
+	c.scopeIndex--
+
+	c.symbolTable = c.symbolTable.Parent(true)
+
+	if c.trace != nil {
+		c.printTrace("SCOPL", c.scopeIndex)
+	}
+
+	return
+}