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WIP correct entry point in persisted runner

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This commit is contained in:
lash 2023-04-13 10:33:24 +01:00
parent 28cbe308d4
commit 59dcb7875d
Signed by untrusted user who does not match committer: lash
GPG Key ID: 21D2E7BB88C2A746
9 changed files with 106 additions and 60 deletions
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14
engine/engine.go
View File

@ -43,7 +43,8 @@ func NewEngine(cfg Config, st *state.State, rs resource.Resource, ca cache.Memor
ca: ca,
vm: vm.NewVm(st, rs, ca, szr),
}
if cfg.Root != "" {
//if cfg.Root != "" {
if st.Moves == 0 {
engine.Init(cfg.Root, ctx)
}
return engine
@ -65,10 +66,12 @@ func(en *Engine) Init(sym string, ctx context.Context) error {
return err
}
b := vm.NewLine(nil, vm.MOVE, []string{sym}, nil, nil)
log.Printf("start new init VM run with code %x", b)
b, err = en.vm.Run(b, ctx)
if err != nil {
return err
}
log.Printf("ended init VM run with code %x", b)
en.st.SetCode(b)
en.initd = true
return nil
@ -102,10 +105,12 @@ func (en *Engine) Exec(input []byte, ctx context.Context) (bool, error) {
if len(code) == 0 {
return false, fmt.Errorf("no code to execute")
}
log.Printf("start new VM run with code %x", code)
code, err = en.vm.Run(code, ctx)
if err != nil {
return false, err
}
log.Printf("ended VM run with code %x", code)
v, err := en.st.MatchFlag(state.FLAG_TERMINATE, false)
if err != nil {
@ -133,11 +138,10 @@ func (en *Engine) Exec(input []byte, ctx context.Context) (bool, error) {
// - required data inputs to the template are not available.
// - the template for the given node point is note available for retrieval using the resource.Resource implementer.
// - the supplied writer fails to process the writes.
func(en *Engine) WriteResult(w io.Writer, ctx context.Context) error {
func(en *Engine) WriteResult(w io.Writer, ctx context.Context) (int, error) {
r, err := en.vm.Render(ctx)
if err != nil {
return err
return 0, err
}
_, err = io.WriteString(w, r)
return err
return io.WriteString(w, r)
}

33
engine/engine_test.go
View File

@ -26,10 +26,14 @@ type FsWrapper struct {
func NewFsWrapper(path string, st *state.State) FsWrapper {
rs := resource.NewFsResource(path)
return FsWrapper {
wr := FsWrapper {
&rs,
st,
}
wr.AddLocalFunc("one", wr.one)
wr.AddLocalFunc("inky", wr.inky)
wr.AddLocalFunc("pinky", wr.pinky)
return wr
}
func(fs FsWrapper) one(sym string, input []byte, ctx context.Context) (resource.Result, error) {
@ -51,18 +55,6 @@ func(fs FsWrapper) pinky(sym string, input []byte, ctx context.Context) (resourc
}, nil
}
func(fs FsWrapper) FuncFor(sym string) (resource.EntryFunc, error) {
switch sym {
case "one":
return fs.one, nil
case "inky":
return fs.inky, nil
case "pinky":
return fs.pinky, nil
}
return nil, fmt.Errorf("function for %v not found", sym)
}
func(fs FsWrapper) GetCode(sym string) ([]byte, error) {
sym += ".bin"
fp := path.Join(fs.Path, sym)
@ -82,20 +74,19 @@ func generateTestData(t *testing.T) {
}
func TestEngineInit(t *testing.T) {
var err error
generateTestData(t)
ctx := context.TODO()
st := state.NewState(17)
rs := NewFsWrapper(dataDir, &st)
ca := cache.NewCache().WithCacheSize(1024)
en := NewEngine(Config{}, &st, &rs, ca, ctx)
err := en.Init("root", ctx)
if err != nil {
t.Fatal(err)
}
en := NewEngine(Config{
Root: "root",
}, &st, &rs, ca, ctx)
//
w := bytes.NewBuffer(nil)
err = en.WriteResult(w, ctx)
_, err = en.WriteResult(w, ctx)
if err != nil {
t.Fatal(err)
}
@ -118,7 +109,7 @@ func TestEngineInit(t *testing.T) {
t.Fatalf("expected where-string 'foo', got %s", r)
}
w = bytes.NewBuffer(nil)
err = en.WriteResult(w, ctx)
_, err = en.WriteResult(w, ctx)
if err != nil {
t.Fatal(err)
}

5
engine/loop.go
View File

@ -19,7 +19,8 @@ import (
//
// Rendered output is written to the provided writer.
func Loop(en *Engine, reader io.Reader, writer io.Writer, ctx context.Context) error {
err := en.WriteResult(writer, ctx)
var err error
_, err = en.WriteResult(writer, ctx)
if err != nil {
return err
}
@ -41,7 +42,7 @@ func Loop(en *Engine, reader io.Reader, writer io.Writer, ctx context.Context) e
if err != nil {
return fmt.Errorf("unexpected termination: %v\n", err)
}
err = en.WriteResult(writer, ctx)
_, err = en.WriteResult(writer, ctx)
if err != nil {
return err
}

35
engine/persist.go
View File

@ -25,14 +25,43 @@ func RunPersisted(cfg Config, rs resource.Resource, pr persist.Persister, input
return err
}
st := pr.GetState()
log.Printf("st %v", st)
location, idx := st.Where()
if location != "" {
cfg.Root = location
}
log.Printf("run persisted with state %v %x input %s", st, st.Code, input)
en := NewEngine(cfg, pr.GetState(), rs, pr.GetMemory(), ctx)
if len(input) > 0 {
log.Printf("location %s", location)
// if len(input) == 0 {
// log.Printf("init")
// err = en.Init(location, ctx)
// if err != nil {
// return err
// }
c, err := en.WriteResult(w, ctx)
if err != nil {
return err
}
err = pr.Save(cfg.SessionId)
if err != nil {
return err
}
log.Printf("engine init write %v flags %v", c, st.Flags)
if c > 0 {
return err
}
_ = idx
_, err = en.Exec(input, ctx)
if err != nil {
return err
}
_, err = en.WriteResult(w, ctx)
if err != nil {
return err
}
return en.WriteResult(w, ctx)
return pr.Save(cfg.SessionId)
}

38
engine/persist_test.go
View File

@ -1,9 +1,9 @@
package engine
import (
"bytes"
// "bytes"
"context"
"errors"
// "errors"
"io/ioutil"
"os"
"testing"
@ -16,7 +16,7 @@ import (
func TestPersist(t *testing.T) {
generateTestData(t)
cfg := Config{
OutputSize: 128,
OutputSize: 83,
SessionId: "xyzzy",
Root: "root",
}
@ -31,26 +31,18 @@ func TestPersist(t *testing.T) {
ca := cache.NewCache().WithCacheSize(1024)
pr := persist.NewFsPersister(persistDir).WithContent(&st, ca)
w := bytes.NewBuffer(nil)
//w := bytes.NewBuffer(nil)
w := os.Stdout
ctx := context.TODO()
err = RunPersisted(cfg, rs, pr, []byte{}, w, ctx)
if err != nil {
if !errors.Is(err, os.ErrNotExist) {
t.Fatal(err)
}
st := state.NewState(cfg.FlagCount)
ca := cache.NewCache()
if cfg.CacheSize > 0 {
st = state.NewState(cfg.FlagCount)
ca = cache.NewCache()
ca = ca.WithCacheSize(cfg.CacheSize)
}
pr = persist.NewFsPersister(persistDir).WithContent(&st, ca)
err = pr.Save(cfg.SessionId)
if err != nil {
t.Fatal(err)
}
}
pr = persist.NewFsPersister(persistDir)
inputs := []string{
@ -65,4 +57,20 @@ func TestPersist(t *testing.T) {
t.Fatal(err)
}
}
pr = persist.NewFsPersister(persistDir)
err = pr.Load(cfg.SessionId)
if err != nil {
t.Fatal(err)
}
stAfter := pr.GetState()
location, idx := stAfter.Where()
if location != "long" {
t.Fatalf("expected 'long', got %s", location)
}
if idx != 1 {
t.Fatalf("expected '1', got %v", idx)
}
}

4
persist/fs.go
View File

@ -68,7 +68,7 @@ func(p *FsPersister) Save(key string) error {
return err
}
fp := path.Join(p.dir, key)
log.Printf("saved key %v", key)
log.Printf("saved key %v state %x", key, p.State.Code)
return ioutil.WriteFile(fp, b, 0600)
}
@ -80,6 +80,6 @@ func(p *FsPersister) Load(key string) error {
return err
}
err = p.Deserialize(b)
log.Printf("loaded key %v", key)
log.Printf("loaded key %v state %x", key, p.State.Code)
return err
}

7
resource/fs.go
View File

@ -39,6 +39,13 @@ func(fs FsResource) GetCode(sym string) ([]byte, error) {
return ioutil.ReadFile(fp)
}
func(fs *FsResource) AddLocalFunc(sym string, fn EntryFunc) {
if fs.fns == nil {
fs.fns = make(map[string]EntryFunc)
}
fs.fns[sym] = fn
}
func(fs FsResource) FuncFor(sym string) (EntryFunc, error) {
fn, ok := fs.fns[sym]
if ok {

7
state/state.go
View File

@ -34,6 +34,7 @@ type State struct {
BitSize uint32 // size of (32-bit capacity) bit flag byte array
SizeIdx uint16
Flags []byte // Error state
Moves uint32 // Number of times navigation has been performed
input []byte // Last input
}
@ -208,6 +209,7 @@ func(st *State) Next() (uint16, error) {
st.SizeIdx += 1
s, idx := st.Where()
log.Printf("next page for %s: %v", s, idx)
st.Moves += 1
return st.SizeIdx, nil
}
@ -224,6 +226,7 @@ func(st *State) Previous() (uint16, error) {
st.SizeIdx -= 1
s, idx := st.Where()
log.Printf("previous page for %s: %v", s, idx)
st.Moves += 1
return st.SizeIdx, nil
}
@ -258,6 +261,7 @@ func(st *State) Top() (bool, error) {
func(st *State) Down(input string) error {
st.ExecPath = append(st.ExecPath, input)
st.SizeIdx = 0
st.Moves += 1
return nil
}
@ -281,6 +285,7 @@ func(st *State) Up() (string, error) {
}
st.SizeIdx = 0
log.Printf("execpath after %v", st.ExecPath)
st.Moves += 1
return sym, nil
}
@ -332,5 +337,5 @@ func(st *State) Reset() error {
}
func(st State) String() string {
return fmt.Sprintf("idx %v path: %s", st.SizeIdx, strings.Join(st.ExecPath, "/"))
return fmt.Sprintf("moves %v idx %v path: %s", st.Moves, st.SizeIdx, strings.Join(st.ExecPath, "/"))
}

5
vm/runner.go
View File

@ -182,10 +182,10 @@ func(vm *Vm) RunCatch(b []byte, ctx context.Context) ([]byte, error) {
if err != nil {
return b, err
}
b = append(bh, b...)
vm.st.Down(sym)
vm.ca.Push()
vm.Reset()
b = append(bh, b...)
}
return b, nil
}
@ -292,6 +292,7 @@ func(vm *Vm) RunInCmp(b []byte, ctx context.Context) ([]byte, error) {
panic(err)
}
} else {
log.Printf("ignoring input %s, already have match", sym)
return b, nil
}
}
@ -407,7 +408,7 @@ func(vm *Vm) Render(ctx context.Context) (string, error) {
panic(err)
}
if !changed {
log.Printf("Render called when not dirty, please investigate.")
return "", nil
}
sym, idx := vm.st.Where()
r, err := vm.pg.Render(sym, idx)