Use expr.WithContext for the patcher

With Expr 1.16.5 my fix was merged so we no longer need the custom
patcher for the context. It now uses expr.WithContext directly.

expr.go

@@ -5,12 +5,10 @@ import (
 	"io/fs"
 	"os"
 	"path/filepath"
-	"reflect"
 
 	"code.dny.dev/gopherxlr/dbus"
 	"code.dny.dev/gopherxlr/websocket"
 	"github.com/expr-lang/expr"
-	"github.com/expr-lang/expr/ast"
 	"github.com/expr-lang/expr/vm"
 )
 
@@ -48,7 +46,7 @@ func LoadPrograms(dir string) ([]Program, error) {
 			if err != nil {
 				return err
 			}
-			prog, err := expr.Compile(string(src), expr.Env(Env{}), expr.Patch(patcher{}))
+			prog, err := expr.Compile(string(src), expr.Env(Env{}), expr.WithContext("ctx"))
 			if err != nil {
 				return err
 			}
@@ -61,38 +59,3 @@ func LoadPrograms(dir string) ([]Program, error) {
 	}
 	return res, nil
 }
-
-type patcher struct{}
-
-// Until https://github.com/expr-lang/expr/pull/602 is merged
-func (patcher) Visit(node *ast.Node) {
-	switch call := (*node).(type) {
-	case *ast.CallNode:
-		fn := call.Callee.Type()
-		if fn == nil {
-			return
-		}
-		if fn.Kind() != reflect.Func {
-			return
-		}
-		switch fn.NumIn() {
-		case 0:
-			return
-		case 1:
-			if fn.In(0).String() != "context.Context" {
-				return
-			}
-		default:
-			if fn.In(0).String() != "context.Context" &&
-				fn.In(1).String() != "context.Context" {
-				return
-			}
-		}
-		ast.Patch(node, &ast.CallNode{
-			Callee: call.Callee,
-			Arguments: append([]ast.Node{
-				&ast.IdentifierNode{Value: "ctx"},
-			}, call.Arguments...),
-		})
-	}
-}

go.mod

@@ -4,7 +4,7 @@ go 1.22.0
 
 require (
 	github.com/evanphx/json-patch/v5 v5.9.0
-	github.com/expr-lang/expr v1.16.1
+	github.com/expr-lang/expr v1.16.5
 	github.com/godbus/dbus/v5 v5.1.0
 	golang.org/x/net v0.24.0
 )

go.sum

@@ -2,8 +2,8 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/evanphx/json-patch/v5 v5.9.0 h1:kcBlZQbplgElYIlo/n1hJbls2z/1awpXxpRi0/FOJfg=
 github.com/evanphx/json-patch/v5 v5.9.0/go.mod h1:VNkHZ/282BpEyt/tObQO8s5CMPmYYq14uClGH4abBuQ=
-github.com/expr-lang/expr v1.16.1 h1:Na8CUcMdyGbnNpShY7kzcHCU7WqxuL+hnxgHZ4vaz/A=
-github.com/expr-lang/expr v1.16.1/go.mod h1:uCkhfG+x7fcZ5A5sXHKuQ07jGZRl6J0FCAaf2k4PtVQ=
+github.com/expr-lang/expr v1.16.5 h1:m2hvtguFeVaVNTHj8L7BoAyt7O0PAIBaSVbjdHgRXMs=
+github.com/expr-lang/expr v1.16.5/go.mod h1:uCkhfG+x7fcZ5A5sXHKuQ07jGZRl6J0FCAaf2k4PtVQ=
 github.com/godbus/dbus/v5 v5.1.0 h1:4KLkAxT3aOY8Li4FRJe/KvhoNFFxo0m6fNuFUO8QJUk=
 github.com/godbus/dbus/v5 v5.1.0/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=