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Catch empty code after engine init

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This commit is contained in:
lash 2023-04-16 08:51:16 +01:00
parent a4ec4dd60e
commit 8258b9a5d8
Signed by untrusted user who does not match committer: lash
GPG Key ID: 21D2E7BB88C2A746
10 changed files with 68 additions and 25 deletions
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10
dev/interactive/main.go
View File

@ -22,10 +22,14 @@ func main() {
fmt.Fprintf(os.Stderr, "starting session at symbol '%s' using resource dir: %s\n", root, dir)
ctx := context.Background()
en := engine.NewSizedEngine(dir, uint32(size))
err := engine.Loop(&en, os.Stdin, os.Stdout, ctx)
en, err := engine.NewSizedEngine(dir, uint32(size))
if err != nil {
fmt.Fprintf(os.Stderr, "loop exited with error: %v", err)
fmt.Fprintf(os.Stderr, "engine create fail: %v\n", err)
os.Exit(1)
}
err = engine.Loop(&en, os.Stdin, os.Stdout, ctx)
if err != nil {
fmt.Fprintf(os.Stderr, "loop exited with error: %v\n", err)
os.Exit(1)
}
}

4
engine/default.go
View File

@ -9,7 +9,7 @@ import (
)
// NewDefaultEngine is a convenience function to instantiate a filesystem-backed engine with no output constraints.
func NewDefaultEngine(dir string) Engine {
func NewDefaultEngine(dir string) (Engine, error) {
st := state.NewState(0)
rs := resource.NewFsResource(dir)
ca := cache.NewCache()
@ -21,7 +21,7 @@ func NewDefaultEngine(dir string) Engine {
}
// NewSizedEngine is a convenience function to instantiate a filesystem-backed engine with a specified output constraint.
func NewSizedEngine(dir string, size uint32) Engine {
func NewSizedEngine(dir string, size uint32) (Engine, error) {
st := state.NewState(0)
rs := resource.NewFsResource(dir)
ca := cache.NewCache()

10
engine/engine.go
View File

@ -32,7 +32,7 @@ type Engine struct {
}
// NewEngine creates a new Engine
func NewEngine(cfg Config, st *state.State, rs resource.Resource, ca cache.Memory, ctx context.Context) Engine {
func NewEngine(cfg Config, st *state.State, rs resource.Resource, ca cache.Memory, ctx context.Context) (Engine, error) {
var szr *render.Sizer
if cfg.OutputSize > 0 {
szr = render.NewSizer(cfg.OutputSize)
@ -44,10 +44,11 @@ func NewEngine(cfg Config, st *state.State, rs resource.Resource, ca cache.Memor
ca: ca,
vm: vm.NewVm(st, rs, ca, szr),
}
var err error
if st.Moves == 0 {
engine.Init(cfg.Root, ctx)
err = engine.Init(cfg.Root, ctx)
}
return engine
return engine, err
}
// Init must be explicitly called before using the Engine instance.
@ -71,6 +72,9 @@ func(en *Engine) Init(sym string, ctx context.Context) error {
if err != nil {
return err
}
if len(b) == 0 {
return fmt.Errorf("no code left after init, that's just useless and sad")
}
log.Printf("ended init VM run with code %x", b)
en.st.SetCode(b)
en.initd = true

15
engine/engine_test.go
View File

@ -81,9 +81,12 @@ func TestEngineInit(t *testing.T) {
rs := NewFsWrapper(dataDir, &st)
ca := cache.NewCache().WithCacheSize(1024)
en := NewEngine(Config{
en, err := NewEngine(Config{
Root: "root",
}, &st, &rs, ca, ctx)
if err != nil {
t.Fatal(err)
}
//
w := bytes.NewBuffer(nil)
_, err = en.WriteResult(w, ctx)
@ -133,8 +136,14 @@ func TestEngineExecInvalidInput(t *testing.T) {
rs := NewFsWrapper(dataDir, &st)
ca := cache.NewCache().WithCacheSize(1024)
en := NewEngine(Config{}, &st, &rs, ca, ctx)
err := en.Init("root", ctx)
en, err := NewEngine(Config{
Root: "root",
}, &st, &rs, ca, ctx)
if err != nil {
t.Fatal(err)
}
err = en.Init("root", ctx)
if err != nil {
t.Fatal(err)
}

21
engine/loop_test.go
View File

@ -23,8 +23,11 @@ func TestLoopTop(t *testing.T) {
cfg := Config{
Root: "root",
}
en := NewEngine(cfg, &st, &rs, ca, ctx)
err := en.Init("root", ctx)
en, err := NewEngine(cfg, &st, &rs, ca, ctx)
if err != nil {
t.Fatal(err)
}
err = en.Init("root", ctx)
if err != nil {
t.Fatal(err)
}
@ -59,8 +62,11 @@ func TestLoopBackForth(t *testing.T) {
cfg := Config{
Root: "root",
}
en := NewEngine(cfg, &st, &rs, ca, ctx)
err := en.Init("root", ctx)
en, err := NewEngine(cfg, &st, &rs, ca, ctx)
if err != nil {
t.Fatal(err)
}
err = en.Init("root", ctx)
if err != nil {
t.Fatal(err)
}
@ -93,8 +99,11 @@ func TestLoopBrowse(t *testing.T) {
OutputSize: 68,
Root: "root",
}
en := NewEngine(cfg, &st, &rs, ca, ctx)
err := en.Init("root", ctx)
en, err := NewEngine(cfg, &st, &rs, ca, ctx)
if err != nil {
t.Fatal(err)
}
err = en.Init("root", ctx)
if err != nil {
t.Fatal(err)
}

5
engine/persist.go
View File

@ -24,7 +24,10 @@ func RunPersisted(cfg Config, rs resource.Resource, pr persist.Persister, input
return err
}
en := NewEngine(cfg, pr.GetState(), rs, pr.GetMemory(), ctx)
en, err := NewEngine(cfg, pr.GetState(), rs, pr.GetMemory(), ctx)
if err != nil {
return err
}
c, err := en.WriteResult(w, ctx)
if err != nil {

18
examples/profile/main.go
View File

@ -17,6 +17,10 @@ import (
"git.defalsify.org/vise/state"
)
const (
USERFLAG_IDENTIFIED = iota + state.FLAG_USERSTART
)
var (
baseDir = testdataloader.GetBasePath()
scriptDir = path.Join(baseDir, "examples", "profile")
@ -47,7 +51,7 @@ func main() {
flag.Parse()
fmt.Fprintf(os.Stderr, "starting session at symbol '%s' using resource dir: %s\n", root, dir)
st := state.NewState(0)
st := state.NewState(1)
rs := resource.NewFsResource(scriptDir)
rs.AddLocalFunc("do_name_save", nameSave)
rs.AddLocalFunc("do_email_save", emailSave)
@ -58,11 +62,15 @@ func main() {
OutputSize: uint32(size),
}
ctx := context.Background()
en := engine.NewEngine(cfg, &st, &rs, ca, ctx)
err := engine.Loop(&en, os.Stdin, os.Stdout, ctx)
en, err := engine.NewEngine(cfg, &st, &rs, ca, ctx)
if err != nil {
fmt.Fprintf(os.Stderr, "loop exited with error: %v", err)
fmt.Fprintf(os.Stderr, "engine create fail: %v\n", err)
os.Exit(1)
}
err = engine.Loop(&en, os.Stdin, os.Stdout, ctx)
if err != nil {
fmt.Fprintf(os.Stderr, "loop exited with error: %v\n", err)
os.Exit(1)
}
}

2
examples/profile/root.vis
View File

@ -1,3 +1,3 @@
CATCH identified 9 0
DOWN entry_name 0 "name"
DOWN entry_email 1 "email"
DOWN entry_sex 2 "sex"

1
state/flag.go
View File

@ -6,6 +6,7 @@ const (
FLAG_TERMINATE = 3
FLAG_DIRTY = 4
FLAG_LOADFAIL = 5
FLAG_USERSTART = 9
//FLAG_WRITEABLE = FLAG_LOADFAIL
)

7
vm/runner.go
View File

@ -178,6 +178,11 @@ func(vm *Vm) RunCatch(b []byte, ctx context.Context) ([]byte, error) {
}
r, err := vm.st.MatchFlag(sig, mode)
if err != nil {
_, err = vm.st.SetFlag(state.FLAG_TERMINATE)
if err != nil {
panic(err)
}
log.Printf("terminate set")
return b, err
}
if r {
@ -190,7 +195,7 @@ func(vm *Vm) RunCatch(b []byte, ctx context.Context) ([]byte, error) {
vm.st.Down(sym)
vm.ca.Push()
vm.Reset()
}
}
return b, nil
}