mirror of
https://github.com/nspcc-dev/neo-go.git
synced 2024-11-23 13:38:35 +00:00
114 lines
2.7 KiB
Go
114 lines
2.7 KiB
Go
package compiler_test
|
|
|
|
import (
|
|
"fmt"
|
|
"strings"
|
|
"testing"
|
|
|
|
"github.com/nspcc-dev/neo-go/pkg/compiler"
|
|
"github.com/nspcc-dev/neo-go/pkg/vm"
|
|
"github.com/stretchr/testify/assert"
|
|
"github.com/stretchr/testify/require"
|
|
)
|
|
|
|
type testCase struct {
|
|
name string
|
|
src string
|
|
result interface{}
|
|
}
|
|
|
|
func runTestCases(t *testing.T, tcases []testCase) {
|
|
for _, tcase := range tcases {
|
|
t.Run(tcase.name, func(t *testing.T) { eval(t, tcase.src, tcase.result) })
|
|
}
|
|
}
|
|
|
|
func eval(t *testing.T, src string, result interface{}) {
|
|
vm := vmAndCompile(t, src)
|
|
err := vm.Run()
|
|
require.NoError(t, err)
|
|
assertResult(t, vm, result)
|
|
}
|
|
|
|
func evalWithArgs(t *testing.T, src string, op []byte, args []vm.StackItem, result interface{}) {
|
|
vm := vmAndCompile(t, src)
|
|
vm.LoadArgs(op, args)
|
|
err := vm.Run()
|
|
require.NoError(t, err)
|
|
assertResult(t, vm, result)
|
|
}
|
|
|
|
func assertResult(t *testing.T, vm *vm.VM, result interface{}) {
|
|
assert.Equal(t, result, vm.PopResult())
|
|
assert.Equal(t, 0, vm.Astack().Len())
|
|
assert.Equal(t, 0, vm.Istack().Len())
|
|
}
|
|
|
|
func vmAndCompile(t *testing.T, src string) *vm.VM {
|
|
vm := vm.New()
|
|
|
|
storePlugin := newStoragePlugin()
|
|
vm.RegisterInteropGetter(storePlugin.getInterop)
|
|
|
|
b, err := compiler.Compile(strings.NewReader(src))
|
|
require.NoError(t, err)
|
|
vm.Load(b)
|
|
return vm
|
|
}
|
|
|
|
type storagePlugin struct {
|
|
mem map[string][]byte
|
|
interops map[uint32]vm.InteropFunc
|
|
}
|
|
|
|
func newStoragePlugin() *storagePlugin {
|
|
s := &storagePlugin{
|
|
mem: make(map[string][]byte),
|
|
interops: make(map[uint32]vm.InteropFunc),
|
|
}
|
|
s.interops[vm.InteropNameToID([]byte("Neo.Storage.Get"))] = s.Get
|
|
s.interops[vm.InteropNameToID([]byte("Neo.Storage.Put"))] = s.Put
|
|
s.interops[vm.InteropNameToID([]byte("Neo.Storage.GetContext"))] = s.GetContext
|
|
return s
|
|
|
|
}
|
|
|
|
func (s *storagePlugin) getInterop(id uint32) *vm.InteropFuncPrice {
|
|
f := s.interops[id]
|
|
if f != nil {
|
|
return &vm.InteropFuncPrice{Func: f, Price: 1}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (s *storagePlugin) Delete(vm *vm.VM) error {
|
|
vm.Estack().Pop()
|
|
key := vm.Estack().Pop().Bytes()
|
|
delete(s.mem, string(key))
|
|
return nil
|
|
}
|
|
|
|
func (s *storagePlugin) Put(vm *vm.VM) error {
|
|
vm.Estack().Pop()
|
|
key := vm.Estack().Pop().Bytes()
|
|
value := vm.Estack().Pop().Bytes()
|
|
s.mem[string(key)] = value
|
|
return nil
|
|
}
|
|
|
|
func (s *storagePlugin) Get(vm *vm.VM) error {
|
|
vm.Estack().Pop()
|
|
item := vm.Estack().Pop().Bytes()
|
|
if val, ok := s.mem[string(item)]; ok {
|
|
vm.Estack().PushVal(val)
|
|
return nil
|
|
}
|
|
return fmt.Errorf("could not find %+v", item)
|
|
}
|
|
|
|
func (s *storagePlugin) GetContext(vm *vm.VM) error {
|
|
// Pushing anything on the stack here will work. This is just to satisfy
|
|
// the compiler, thinking it has pushed the context ^^.
|
|
vm.Estack().PushVal(10)
|
|
return nil
|
|
}
|