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StateManager documentation #393

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StateManager documentation #393

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195 changes: 90 additions & 105 deletions docs/index.md
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Original file line number Diff line number Diff line change
Expand Up @@ -14,9 +14,9 @@
- [Parameters][10]
- [vm.runTx][11]
- [Parameters][12]
- [vm.runCode][13]
- [runCode~callback][13]
- [Parameters][14]
- [runCode~callback][15]
- [vm.runCode][15]
- [Parameters][16]
- [Event: beforeBlock][17]
- [Properties][18]
Expand All @@ -26,35 +26,33 @@
- [Properties][22]
- [Event: afterTx][23]
- [Properties][24]
- [Event: newContract][25]
- [Event: step][25]
- [Properties][26]
- [Event: step][27]
- [Properties][28]

## vm.runBlockchain

Processes blocks and adds them to the blockchain

### Parameters

- `blockchain` **Blockchain** A [blockchain][29] that to process
- `cb` **[Function][30]** the callback function
- `blockchain` **Blockchain** A [blockchain][27] that to process
- `cb` **[Function][28]** the callback function

## VM

VM Class, `new VM(opts)` creates a new VM object

### Parameters

- `opts` **[Object][31]**
- `opts.stateManager` **StateManager** a state manager instance (EXPERIMENTAL - unstable API)
- `opts` **[Object][29]**
- `opts.stateManager` **StateManager** a [`StateManager`][30] instance to use as the state store (Beta API)
- `opts.state` **Trie** a merkle-patricia-tree instance for the state tree (ignored if stateManager is passed)
- `opts.blockchain` **Blockchain** a blockchain object for storing/retrieving blocks (ignored if stateManager is passed)
- `opts.chain` **([String][32] \| [Number][33])** the chain the VM operates on [default: 'mainnet']
- `opts.hardfork` **[String][32]** hardfork rules to be used [default: 'byzantium', supported: 'byzantium' (will throw on unsupported)]
- `opts.activatePrecompiles` **[Boolean][34]** create entries in the state tree for the precompiled contracts
- `opts.allowUnlimitedContractSize` **[Boolean][34]** allows unlimited contract sizes while debugging. By setting this to `true`, the check for contract size limit of 24KB (see [EIP-170][35]) is bypassed. (default: `false`; ONLY set to `true` during debugging)
- `opts.emitFreeLogs` **[Boolean][34]** Changes the behavior of the LOG opcode, the gas cost of the opcode becomes zero and calling it using STATICCALL won't throw. (default: `false`; ONLY set to `true` during debugging)
- `opts.chain` **([String][31] \| [Number][32])** the chain the VM operates on [default: 'mainnet']
- `opts.hardfork` **[String][31]** hardfork rules to be used [default: 'byzantium', supported: 'byzantium' (will throw on unsupported)]
- `opts.activatePrecompiles` **[Boolean][33]** create entries in the state tree for the precompiled contracts
- `opts.allowUnlimitedContractSize` **[Boolean][33]** allows unlimited contract sizes while debugging. By setting this to `true`, the check for contract size limit of 24KB (see [EIP-170][34]) is bypassed. (default: `false`; ONLY set to `true` during debugging)
- `opts.emitFreeLogs` **[Boolean][33]** Changes the behavior of the LOG opcode, the gas cost of the opcode becomes zero and calling it using STATICCALL won't throw. (default: `false`; ONLY set to `true` during debugging)

## vm.runBlock

Expand All @@ -63,37 +61,37 @@ Processes the `block` running all of the transactions it contains and updating t
### Parameters

- `opts`
- `opts.block` **Block** the [`Block`][36] to process
- `opts.generate` **[Boolean][34]** [gen=false] whether to generate the stateRoot, if false `runBlock` will check the stateRoot of the block against the Trie
- `cb` **[runBlock~callback][37]** callback
- `opts.block` **Block** the [`Block`][35] to process
- `opts.generate` **[Boolean][33]** [gen=false] whether to generate the stateRoot, if false `runBlock` will check the stateRoot of the block against the Trie
- `cb` **[runBlock~callback][36]** callback

## runBlock~callback

Callback for `runBlock` method

Type: [Function][30]
Type: [Function][28]

### Parameters

- `error` **[Error][38]** an error that may have happened or `null`
- `results` **[Object][31]**
- `results.receipts` **[Array][39]** the receipts from the transactions in the block
- `results.results` **[Array][39]**
- `error` **[Error][37]** an error that may have happened or `null`
- `results` **[Object][29]**
- `results.receipts` **[Array][38]** the receipts from the transactions in the block
- `results.results` **[Array][38]**

## runTx~callback

Callback for `runTx` method

Type: [Function][30]
Type: [Function][28]

### Parameters

- `error` **[Error][38]** an error that may have happened or `null`
- `results` **[Object][31]**
- `error` **[Error][37]** an error that may have happened or `null`
- `results` **[Object][29]**
- `results.amountSpent` **BN** the amount of ether used by this transaction as a `bignum`
- `results.gasUsed` **BN** the amount of gas as a `bignum` used by the transaction
- `results.gasRefund` **BN** the amount of gas as a `bignum` that was refunded during the transaction (i.e. `gasUsed = totalGasConsumed - gasRefund`)
- `vm` **[VM][40]** contains the results from running the code, if any, as described in `vm.runCode(params, cb)`
- `vm` **[VM][39]** contains the results from running the code, if any, as described in `vm.runCode(params, cb)`

## vm.runTx

Expand All @@ -102,54 +100,54 @@ Process a transaction. Run the vm. Transfers eth. Checks balances.
### Parameters

- `opts`
- `opts.tx` **Transaction** a [`Transaction`][41] to run
- `opts.skipNonce` **[Boolean][34]** skips the nonce check
- `opts.skipBalance` **[Boolean][34]** skips the balance check
- `opts.tx` **Transaction** a [`Transaction`][40] to run
- `opts.skipNonce` **[Boolean][33]** skips the nonce check
- `opts.skipBalance` **[Boolean][33]** skips the balance check
- `opts.block` **Block** the block to which the `tx` belongs, if no block is given a default one is created
- `cb` **[runTx~callback][42]** the callback

## vm.runCode

Runs EVM code

### Parameters

- `opts` **[Object][31]**
- `opts.account` **Account** the [`Account`][43] that the executing code belongs to. If omitted an empty account will be used
- `opts.address` **[Buffer][44]** the address of the account that is executing this code. The address should be a `Buffer` of bytes. Defaults to `0`
- `opts.block` **Block** the [`Block`][36] the `tx` belongs to. If omitted a blank block will be used
- `opts.caller` **[Buffer][44]** the address that ran this code. The address should be a `Buffer` of 20bits. Defaults to `0`
- `opts.code` **[Buffer][44]** the EVM code to run given as a `Buffer`
- `opts.data` **[Buffer][44]** the input data
- `opts.gasLimit` **[Buffer][44]** the gas limit for the code
- `opts.origin` **[Buffer][44]** the address where the call originated from. The address should be a `Buffer` of 20bits. Defaults to `0`
- `opts.value` **[Buffer][44]** the value in ether that is being sent to `opt.address`. Defaults to `0`
- `cb` **[runCode~callback][45]** callback
- `cb` **[runTx~callback][41]** the callback
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Had a look at the generated doc, looks good.


## runCode~callback

Callback for `runCode` method

Type: [Function][30]
Type: [Function][28]

### Parameters

- `error` **[Error][38]** an error that may have happened or `null`
- `results` **[Object][31]**
- `error` **[Error][37]** an error that may have happened or `null`
- `results` **[Object][29]**
- `results.gas` **BN** the amount of gas left
- `results.gasUsed` **BN** the amount of gas as a `bignum` the code used to run
- `results.gasRefund` **BN** a `bignum` containing the amount of gas to refund from deleting storage values
- `results.selfdestruct` **[Object][31]** an `Object` with keys for accounts that have selfdestructed and values for balance transfer recipient accounts
- `results.logs` **[Array][39]** an `Array` of logs that the contract emitted
- `results.exception` **[Number][33]** `0` if the contract encountered an exception, `1` otherwise
- `results.exceptionError` **[String][32]** a `String` describing the exception if there was one
- `results.return` **[Buffer][44]** a `Buffer` containing the value that was returned by the contract
- `results.selfdestruct` **[Object][29]** an `Object` with keys for accounts that have selfdestructed and values for balance transfer recipient accounts
- `results.logs` **[Array][38]** an `Array` of logs that the contract emitted
- `results.exception` **[Number][32]** `0` if the contract encountered an exception, `1` otherwise
- `results.exceptionError` **[String][31]** a `String` describing the exception if there was one
- `results.return` **[Buffer][42]** a `Buffer` containing the value that was returned by the contract

## vm.runCode

Runs EVM code

### Parameters

- `opts` **[Object][29]**
- `opts.account` **Account** the [`Account`][43] that the executing code belongs to. If omitted an empty account will be used
- `opts.address` **[Buffer][42]** the address of the account that is executing this code. The address should be a `Buffer` of bytes. Defaults to `0`
- `opts.block` **Block** the [`Block`][35] the `tx` belongs to. If omitted a blank block will be used
- `opts.caller` **[Buffer][42]** the address that ran this code. The address should be a `Buffer` of 20bits. Defaults to `0`
- `opts.code` **[Buffer][42]** the EVM code to run given as a `Buffer`
- `opts.data` **[Buffer][42]** the input data
- `opts.gasLimit` **[Buffer][42]** the gas limit for the code
- `opts.origin` **[Buffer][42]** the address where the call originated from. The address should be a `Buffer` of 20bits. Defaults to `0`
- `opts.value` **[Buffer][42]** the value in ether that is being sent to `opt.address`. Defaults to `0`
- `cb` **[runCode~callback][44]** callback

## Event: beforeBlock

The `beforeBlock` event

Type: [Object][31]
Type: [Object][29]

### Properties

Expand All @@ -159,17 +157,17 @@ Type: [Object][31]

The `afterBlock` event

Type: [Object][31]
Type: [Object][29]

### Properties

- `result` **[Object][31]** emits the results of processing a block
- `result` **[Object][29]** emits the results of processing a block

## Event: beforeTx

The `beforeTx` event

Type: [Object][31]
Type: [Object][29]

### Properties

Expand All @@ -179,40 +177,29 @@ Type: [Object][31]

The `afterTx` event

Type: [Object][31]
Type: [Object][29]

### Properties

- `result` **[Object][31]** result of the transaction

## Event: newContract

The `newContract` event when a contract is created

Type: [Object][31]

### Properties

- `address` **[Buffer][44]** the created address for the new contract (type `Buffer | Uint8Array`)
- `code` **[Buffer][44]** the deployment bytecode for reference (type `Buffer | Uint8Array`)
- `result` **[Object][29]** result of the transaction

## Event: step

The `step` event for trace output

Type: [Object][31]
Type: [Object][29]

### Properties

- `pc` **[Number][33]** representing the program counter
- `opcode` **[String][32]** the next opcode to be ran
- `pc` **[Number][32]** representing the program counter
- `opcode` **[String][31]** the next opcode to be ran
- `gasLeft` **BN** amount of gasLeft
- `stack` **[Array][39]** an `Array` of `Buffers` containing the stack
- `account` **Account** the [`Account`][46] which owns the code running
- `address` **[Buffer][44]** the address of the `account`
- `depth` **[Number][33]** the current number of calls deep the contract is
- `memory` **[Buffer][44]** the memory of the VM as a `buffer`
- `storageManager` **StateManager** a state manager instance (EXPERIMENTAL - unstable API)
- `stack` **[Array][38]** an `Array` of `Buffers` containing the stack
- `account` **Account** the [`Account`][45] which owns the code running
- `address` **[Buffer][42]** the address of the `account`
- `depth` **[Number][32]** the current number of calls deep the contract is
- `memory` **[Buffer][42]** the memory of the VM as a `buffer`
- `stateManager` **StateManager** a [`StateManager`][30] instance (Beta API)

[1]: #vmrunblockchain

Expand All @@ -238,11 +225,11 @@ Type: [Object][31]

[12]: #parameters-5

[13]: #vmruncode
[13]: #runcodecallback

[14]: #parameters-6

[15]: #runcodecallback
[15]: #vmruncode

[16]: #parameters-7

Expand All @@ -262,46 +249,44 @@ Type: [Object][31]

[24]: #properties-3

[25]: #event-newcontract
[25]: #event-step

[26]: #properties-4

[27]: #event-step
[27]: https://github.com/ethereum/ethereumjs-blockchain

[28]: #properties-5
[28]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Statements/function

[29]: https://github.com/ethereum/ethereumjs-blockchain
[29]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object

[30]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Statements/function
[30]: stateManager.md

[31]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object
[31]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String

[32]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String
[32]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number

[33]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number
[33]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Boolean

[34]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Boolean
[34]: https://git.io/vxZkK

[35]: https://git.io/vxZkK
[35]: https://github.com/ethereumjs/ethereumjs-block

[36]: https://github.com/ethereumjs/ethereumjs-block
[36]: #runblockcallback

[37]: #runblockcallback
[37]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Error

[38]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Error
[38]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array

[39]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array
[39]: #vm

[40]: #vm
[40]: https://github.com/ethereum/ethereumjs-tx

[41]: https://github.com/ethereum/ethereumjs-tx
[41]: #runtxcallback

[42]: #runtxcallback
[42]: https://nodejs.org/api/buffer.html

[43]: https://github.com/ethereumjs/ethereumjs-account

[44]: https://nodejs.org/api/buffer.html

[45]: #runcodecallback
[44]: #runcodecallback

[46]: https://github.com/ethereum/ethereumjs-account
[45]: https://github.com/ethereum/ethereumjs-account
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