wrote dsl for ast boiler plate generation

ast/ast.go

@@ -1,55 +1,3 @@
 package ast
 
-import "git.red-panda.pet/pandaware/lox-go/lexer"
-
-// todo: find something better than any here
-// we can't use generics on either the visitor itself or
-// each individual method because the adding it to the
-// visitor itself infects every expr you use with it
-// and methods cannot have generic parameters
-
-type ExprVisitor interface {
-	VisitBinaryExpr(b *BinaryExpr) any
-	VisitGroupingExpr(g *GroupingExpr) any
-	VisitLiteralExpr(g *LiteralExpr) any
-	VisitUnaryExpr(g *UnaryExpr) any
-}
-
-type Expr interface {
-	Accept(v ExprVisitor) any
-}
-
-type BinaryExpr struct {
-	Left     Expr
-	Operator *lexer.Token
-	Right    Expr
-}
-
-func (b *BinaryExpr) Accept(v ExprVisitor) any {
-	return v.VisitBinaryExpr(b)
-}
-
-type GroupingExpr struct {
-	Expr Expr
-}
-
-func (g *GroupingExpr) Accept(v ExprVisitor) any {
-	return v.VisitGroupingExpr(g)
-}
-
-type LiteralExpr struct {
-	Value any
-}
-
-func (l *LiteralExpr) Accept(v ExprVisitor) any {
-	return v.VisitLiteralExpr(l)
-}
-
-type UnaryExpr struct {
-	Operator *lexer.Token
-	Right    Expr
-}
-
-func (u *UnaryExpr) Accept(v ExprVisitor) any {
-	return v.VisitUnaryExpr(u)
-}
+//go:generate go run ./gen -f expr.ast