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
49 lines
1.5 KiB
Go
49 lines
1.5 KiB
Go
package stack
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import (
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"errors"
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)
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//Item is an interface which represents object that can be placed on the stack
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type Item interface {
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Integer() (*Int, error)
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Boolean() (*Boolean, error)
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ByteArray() (*ByteArray, error)
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Array() (*Array, error)
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Context() (*Context, error)
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}
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// Represents an `abstract` stack item
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// which will hold default values for stack items
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// this is intended to be embedded into types that you will use on the stack
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type abstractItem struct{}
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// Integer is the default implementation for a stackItem
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// Implements Item interface
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func (a *abstractItem) Integer() (*Int, error) {
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return nil, errors.New("This stack item is not an Integer")
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}
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// Boolean is the default implementation for a stackItem
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// Implements Item interface
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func (a *abstractItem) Boolean() (*Boolean, error) {
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return nil, errors.New("This stack item is not a Boolean")
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}
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// ByteArray is the default implementation for a stackItem
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// Implements Item interface
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func (a *abstractItem) ByteArray() (*ByteArray, error) {
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return nil, errors.New("This stack item is not a byte array")
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}
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// Array is the default implementation for a stackItem
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// Implements Item interface
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func (a *abstractItem) Array() (*Array, error) {
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return nil, errors.New("This stack item is not an array")
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}
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// Context is the default implementation for a stackItem
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// Implements Item interface
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func (a *abstractItem) Context() (*Context, error) {
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return nil, errors.New("This stack item is not of type context")
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}
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