Add redis support for distributed caching

vendor/github.com/yuin/gopher-lua/ast/expr.go

@@ -0,0 +1,138 @@
+package ast
+
+type Expr interface {
+	PositionHolder
+	exprMarker()
+}
+
+type ExprBase struct {
+	Node
+}
+
+func (expr *ExprBase) exprMarker() {}
+
+/* ConstExprs {{{ */
+
+type ConstExpr interface {
+	Expr
+	constExprMarker()
+}
+
+type ConstExprBase struct {
+	ExprBase
+}
+
+func (expr *ConstExprBase) constExprMarker() {}
+
+type TrueExpr struct {
+	ConstExprBase
+}
+
+type FalseExpr struct {
+	ConstExprBase
+}
+
+type NilExpr struct {
+	ConstExprBase
+}
+
+type NumberExpr struct {
+	ConstExprBase
+
+	Value string
+}
+
+type StringExpr struct {
+	ConstExprBase
+
+	Value string
+}
+
+/* ConstExprs }}} */
+
+type Comma3Expr struct {
+	ExprBase
+	AdjustRet bool
+}
+
+type IdentExpr struct {
+	ExprBase
+
+	Value string
+}
+
+type AttrGetExpr struct {
+	ExprBase
+
+	Object Expr
+	Key    Expr
+}
+
+type TableExpr struct {
+	ExprBase
+
+	Fields []*Field
+}
+
+type FuncCallExpr struct {
+	ExprBase
+
+	Func      Expr
+	Receiver  Expr
+	Method    string
+	Args      []Expr
+	AdjustRet bool
+}
+
+type LogicalOpExpr struct {
+	ExprBase
+
+	Operator string
+	Lhs      Expr
+	Rhs      Expr
+}
+
+type RelationalOpExpr struct {
+	ExprBase
+
+	Operator string
+	Lhs      Expr
+	Rhs      Expr
+}
+
+type StringConcatOpExpr struct {
+	ExprBase
+
+	Lhs Expr
+	Rhs Expr
+}
+
+type ArithmeticOpExpr struct {
+	ExprBase
+
+	Operator string
+	Lhs      Expr
+	Rhs      Expr
+}
+
+type UnaryMinusOpExpr struct {
+	ExprBase
+	Expr Expr
+}
+
+type UnaryNotOpExpr struct {
+	ExprBase
+	Expr Expr
+}
+
+type UnaryLenOpExpr struct {
+	ExprBase
+	Expr Expr
+}
+
+type FunctionExpr struct {
+	ExprBase
+
+	ParList *ParList
+	Stmts   []Stmt
+}