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compiler/storage: add read-only related interops

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This commit is contained in:
Roman Khimov 2020-05-18 18:13:45 +03:00
parent bfd8fe5960
commit 559e8a16da
2 changed files with 21 additions and 6 deletions
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8
pkg/compiler/syscall.go
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@ -21,11 +21,13 @@ var syscalls = map[string]map[string]string{
"Value": "Neo.Enumerator.Value",
},
"storage": {
"GetContext": "Neo.Storage.GetContext",
"Put": "Neo.Storage.Put",
"Get": "Neo.Storage.Get",
"ConvertContextToReadOnly": "Neo.StorageContext.AsReadOnly",
"Delete": "Neo.Storage.Delete",
"Find": "Neo.Storage.Find",
"Get": "Neo.Storage.Get",
"GetContext": "Neo.Storage.GetContext",
"GetReadOnlyContext": "Neo.Storage.GetReadOnlyContext",
"Put": "Neo.Storage.Put",
},
"runtime": {
"GetTrigger": "Neo.Runtime.GetTrigger",

15
pkg/interop/storage/storage.go
View file

@ -10,13 +10,26 @@ import "github.com/nspcc-dev/neo-go/pkg/interop/iterator"
// Context represents storage context that is mandatory for Put/Get/Delete
// operations. It's an opaque type that can only be created properly by
// GetContext. It's similar to Neo .net framework's StorageContext class.
// GetContext, GetReadOnlyContext or ConvertContextToReadOnly. It's similar
// to Neo .net framework's StorageContext class.
type Context struct{}
// ConvertContextToReadOnly returns new context from the given one, but with
// writing capability turned off, so that you could only invoke Get and Find
// using this new Context. If Context is already read-only this function is a
// no-op. It uses `Neo.StorageContext.AsReadOnly` syscall.
func ConvertContextToReadOnly(ctx Context) Context { return Context{} }
// GetContext returns current contract's (that invokes this function) storage
// context. It uses `Neo.Storage.GetContext` syscall.
func GetContext() Context { return Context{} }
// GetReadOnlyContext returns current contract's (that invokes this function)
// storage context in read-only mode, you can use this context for Get and Find
// functions, but using it for Put and Delete will fail. It uses
// `Neo.Storage.GetReadOnlyContext` syscall.
func GetReadOnlyContext() Context { return Context{} }
// Put saves given value with given key in the storage using given Context.
// Even though it accepts interface{} for both, you can only pass simple types
// there like string, []byte, int or bool (not structures or slices of more