mirror of
https://github.com/nspcc-dev/neo-go.git
synced 2024-12-04 19:19:44 +00:00
c1b6738bdb
* VM:Add abstract stack item * VM: Add stackItems; Array, Boolean, Int and ByteArray * VM: Add tests for stack item * VM: first pass at Random Access Stack object * VM: Add Sub, Mul, Mod LSH, RSH * VM: moved test helper functions into separate file * VM: removed helper functions from stack_test.go * Add conversions for bytearray and Int stack items * Add instructions file for vm * - Add guide to stack readme - Add testReadInt64 * Add Builder * Refactor Int, Boolean, ByteArray conversion * Add Context stack Item * Add Invocation stack - convenience RAS * rename testhelper to test_helper * Move opcode file * - Add `Add` OpCode - Add Opcode Function map * - Add test for math `Add` opcode - basic opcode execution * Add popTwoIntegers convenience func * Add `SUB` Opcode * Export Context Read methods - Return errors where failable * - Add `Op` to handleOP func signature - Add PushNBytes OPcode * remove error on NewBoolean - Expose underlying with Getter on Boolean StackItem - Add Equals method for ByteArray * Make Next() method on Context failable, refactor peekContext and Peek * Add ExecuteOp, Step and Run methods on the VM * Add Equal Opcode * Add THROWIFNOT Opcode * Add RET Opcode * Refactor PushNBytes Opcode * refactor Add, Sub to return VMSTATE add popTwoByteArrays helper function * Add basic tests for vm * clarify vm states * Add astack * [VM] Pass ResultStack to the opcode handlers * [VM] refactor handlers to have rstack as argument * [Stack] - Change RemoveCurrentContext for PopCurrentContext - Add CopTo method to stack * [VM] Add Result stack Len check in simple run test * [VM] fix typo * [Peer/Stall] Change seconds to milliseconds in test
27 lines
696 B
Go
27 lines
696 B
Go
package vm
|
|
|
|
import (
|
|
"github.com/CityOfZion/neo-go/pkg/vm/stack"
|
|
)
|
|
|
|
// Flow control
|
|
|
|
// RET Returns from the current context
|
|
// Returns HALT if there are nomore context's to run
|
|
func RET(op stack.Instruction, ctx *stack.Context, istack *stack.Invocation, rstack *stack.RandomAccess) (Vmstate, error) {
|
|
|
|
// Pop current context from the Inovation stack
|
|
ctx, err := istack.PopCurrentContext()
|
|
if err != nil {
|
|
return FAULT, err
|
|
}
|
|
// If this was the last context, then we copy over the evaluation stack to the resultstack
|
|
// As the program is about to terminate, once we remove the context
|
|
if istack.Len() == 0 {
|
|
|
|
err = ctx.Estack.CopyTo(rstack)
|
|
return HALT, err
|
|
}
|
|
|
|
return NONE, nil
|
|
}
|