wip: ast?

ast/ast.go

@@ -0,0 +1,9 @@
+package ast
+
+type Statement interface {
+	stmt()
+}
+
+type Expr interface {
+	expr()
+}

ast/expr.go

@@ -0,0 +1,13 @@
+package ast
+
+//binary
+////number expr
+////string expr
+////symbol expr
+////assignment
+
+//complex
+/////binary expr
+////filter expr????
+////call expr
+////pipe expr