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seal: Rework contracts API (#6573)

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* Transition getter functions to not use scratch buffer

* Remove scratch buffer from ext_get_storage

* Remove scratch buffer from ext_call

* Remove scratch buffer from ext_instantiate

* Add ext_input and remove scratch buffer

* Rework error handling (changes RPC exposed data)

* ext_return passes a flags field instead of a return code
	* Flags is only for seal and not for the caller
	* flags: u32 replaced status_code: u8 in RPC exposed type
* API functions use a unified error type (ReturnCode)
* ext_transfer now traps on error to be consistent with call and instantiate

* Remove the no longer used `Dispatched` event

* Updated inline documentation

* Prevent skipping of copying the output for getter API

* Return gas_consumed from the RPC contracts call interface

* Updated COMPLEXTITY.md

* Rename ext_gas_price to ext_weight_to_fee

* Align comments with spaces

* Removed no longer used `ExecError`

* Remove possible panic in `from_typed_value`

* Use a struct as associated data for SpecialTrap::Return

* Fix nits in COMPLEXITY.md

* Renamed SpecialTrap to TrapReason

* Fix test

* Finish renaming special_trap -> trap_reason

* Remove no longer used get_runtime_storage

* fixup! Remove no longer used get_runtime_storage

* Removed tabs for comment aligment
This commit is contained in:
Alexander Theißen
2020-07-09 15:07:02 +02:00
committed by GitHub
parent a4427f3635
commit 25de5b5c78
26 changed files with 1116 additions and 1256 deletions
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substrate/frame/contracts/fixtures/storage_size.wat
+22 -14
View File
@@ -1,10 +1,22 @@
(module
(import "env" "ext_get_storage" (func $ext_get_storage (param i32) (result i32)))
(import "env" "ext_get_storage" (func $ext_get_storage (param i32 i32 i32) (result i32)))
(import "env" "ext_set_storage" (func $ext_set_storage (param i32 i32 i32)))
(import "env" "ext_scratch_size" (func $ext_scratch_size (result i32)))
(import "env" "ext_scratch_read" (func $ext_scratch_read (param i32 i32 i32)))
(import "env" "ext_input" (func $ext_input (param i32 i32)))
(import "env" "memory" (memory 16 16))
;; [0, 32) storage key
(data (i32.const 0) "\01")
;; [32, 36) buffer where input is copied (expected size of storage item)
;; [36, 40) size of the input buffer
(data (i32.const 36) "\04")
;; [40, 44) size of buffer for ext_get_storage set to max
(data (i32.const 40) "\FF\FF\FF\FF")
;; [44, inf) ext_get_storage buffer
(func $assert (param i32)
(block $ok
(br_if $ok
@@ -15,21 +27,16 @@
)
(func (export "call")
;; assert $ext_scratch_size == 8
(call $ext_input (i32.const 32) (i32.const 36))
;; assert input size == 4
(call $assert
(i32.eq
(call $ext_scratch_size)
(i32.load (i32.const 36))
(i32.const 4)
)
)
;; copy contents of the scratch buffer into the contract's memory.
(call $ext_scratch_read
(i32.const 32) ;; Pointer in memory to the place where to copy.
(i32.const 0) ;; Offset from the start of the scratch buffer.
(i32.const 4) ;; Count of bytes to copy.
)
;; place a garbage value in storage, the size of which is specified by the call input.
(call $ext_set_storage
(i32.const 0) ;; Pointer to storage key
@@ -41,6 +48,8 @@
(i32.eq
(call $ext_get_storage
(i32.const 0) ;; Pointer to storage key
(i32.const 44) ;; buffer where to copy result
(i32.const 40) ;; pointer to size of buffer
)
(i32.const 0)
)
@@ -48,7 +57,7 @@
(call $assert
(i32.eq
(call $ext_scratch_size)
(i32.load (i32.const 40))
(i32.load (i32.const 32))
)
)
@@ -56,5 +65,4 @@
(func (export "deploy"))
(data (i32.const 0) "\01") ;; Storage key (32 B)
)