Merge pull request #580 from Denton-L/docs-whitespace

Corrections to Documentation Spacing
This commit is contained in:
chriseth 2016-05-18 21:59:24 +02:00
commit ec061b09a3
12 changed files with 615 additions and 556 deletions

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@ -179,6 +179,7 @@ function finishes.
AreWeDoneYet,
Finished
}
// This is the current stage.
Stages public stage = Stages.AcceptingBlindedBids;
@ -188,9 +189,11 @@ function finishes.
if (stage != _stage) throw;
_
}
function nextStage() internal {
stage = Stages(uint(stage) + 1);
}
// Perform timed transitions. Be sure to mention
// this modifier first, otherwise the guards
// will not take the new stage into account.
@ -211,6 +214,7 @@ function finishes.
{
// We will not implement that here
}
function reveal()
timedTransitions
atStage(Stages.RevealBids)
@ -227,6 +231,7 @@ function finishes.
_
nextStage();
}
function g()
timedTransitions
atStage(Stages.AnotherStage)
@ -235,12 +240,14 @@ function finishes.
// If you want to use `return` here,
// you have to call `nextStage()` manually.
}
function h()
timedTransitions
atStage(Stages.AreWeDoneYet)
transitionNext
{
}
function i()
timedTransitions
atStage(Stages.Finished)

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@ -44,7 +44,8 @@ API, this is done as follows::
var MyContract = web3.eth.contract(abiArray);
// deploy new contract
var contractInstance = MyContract.new(
10, 11,
10,
11,
{from: myAccount, gas: 1000000}
);
@ -84,7 +85,8 @@ This means that cyclic creation dependencies are impossible.
// Only the creator can alter the name --
// the comparison is possible since contracts
// are implicitly convertible to addresses.
if (msg.sender == creator) name = newName;
if (msg.sender == creator)
name = newName;
}
function transfer(address newOwner) {
@ -221,7 +223,11 @@ The next example is a bit more complex:
::
contract complex {
struct Data { uint a; bytes3 b; mapping(uint => uint) map; }
struct Data {
uint a;
bytes3 b;
mapping (uint => uint) map;
}
mapping (uint => mapping(bool => Data[])) public data;
}
@ -260,7 +266,11 @@ inheritable properties of contracts and may be overridden by derived contracts.
// This means that if the owner calls this function, the
// function is executed and otherwise, an exception is
// thrown.
modifier onlyowner { if (msg.sender != owner) throw; _ }
modifier onlyowner {
if (msg.sender != owner)
throw;
_
}
}
@ -277,17 +287,24 @@ inheritable properties of contracts and may be overridden by derived contracts.
contract priced {
// Modifiers can receive arguments:
modifier costs(uint price) { if (msg.value >= price) _ }
modifier costs(uint price) {
if (msg.value >= price) {
_
}
}
}
contract Register is priced, owned {
mapping (address => bool) registeredAddresses;
uint price;
function Register(uint initialPrice) { price = initialPrice; }
function register() costs(price) {
registeredAddresses[msg.sender] = true;
}
function changePrice(uint _price) onlyowner {
price = _price;
}

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@ -55,6 +55,8 @@ of other contracts, the amount of Wei sent with the call and the gas can be spec
contract InfoFeed {
function info() returns (uint ret) { return 42; }
}
contract Consumer {
InfoFeed feed;
function setFeed(address addr) { feed = InfoFeed(addr); }
@ -77,10 +79,12 @@ of unused parameters (especially return parameters) can be omitted.
contract c {
function f(uint key, uint value) { ... }
function g() {
// named arguments
f({value: 2, key: 3});
}
// omitted parameters
function func(uint k, uint) returns(uint) {
return k;
@ -110,9 +114,11 @@ Solidity internally allows tuple types, i.e. a list of objects of potentially di
contract C {
uint[] data;
function f() returns (uint, bool, uint) {
return (7, true, 2);
}
function g() {
// Declares and assigns the variables. Specifying the type explicitly is not possible.
var (x, b, y) = f();
@ -288,12 +294,16 @@ you really know what you are doing.
for (uint i = 0; i < _data.length; ++i)
o_sum += _data[i];
}
// We know that we only access the array in bounds, so we can avoid the check.
// 0x20 needs to be added to an array because the first slot contains the
// array length.
function sumAsm(uint[] _data) returns (uint o_sum) {
for (uint i = 0; i < _data.length; ++i)
assembly { o_sum := mload(add(add(_data, 0x20), i)) }
for (uint i = 0; i < _data.length; ++i) {
assembly {
o_sum := mload(add(add(_data, 0x20), i))
}
}
}
}
@ -330,147 +340,147 @@ In the following, `mem[a...b)` signifies the bytes of memory starting at positio
The opcodes `pushi` and `jumpdest` cannot be used directly.
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| stop + `-` | stop execution, identical to return(0,0) |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| add(x, y) | | x + y |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| sub(x, y) | | x - y |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| mul(x, y) | | x * y |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| div(x, y) | | x / y |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| sdiv(x, y) | | x / y, for signed numbers in two's complement |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| mod(x, y) | | x % y |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| smod(x, y) | | x % y, for signed numbers in two's complement |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| exp(x, y) | | x to the power of y |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| not(x) | | ~x, every bit of x is negated |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| lt(x, y) | | 1 if x < y, 0 otherwise |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| gt(x, y) | | 1 if x > y, 0 otherwise |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| slt(x, y) | | 1 if x < y, 0 otherwise, for signed numbers in two's complement |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| sgt(x, y) | | 1 if x > y, 0 otherwise, for signed numbers in two's complement |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| eq(x, y) | | 1 if x == y, 0 otherwise |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| iszero(x) | | 1 if x == 0, 0 otherwise |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| and(x, y) | | bitwise and of x and y |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| or(x, y) | | bitwise or of x and y |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| xor(x, y) | | bitwise xor of x and y |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| byte(n, x) | | nth byte of x, where the most significant byte is the 0th byte |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| addmod(x, y, m) | | (x + y) % m with arbitrary precision arithmetics |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| mulmod(x, y, m) | | (x * y) % m with arbitrary precision arithmetics |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| signextend(i, x) | | sign extend from (i*8+7)th bit counting from least significant |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| sha3(p, n) | | keccak(mem[p...(p+n))) |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| jump(label) | `-` | jump to label / code position |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| jumpi(label, cond) | `-` | jump to label if cond is nonzero |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| pc | | current position in code |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| pop | `*` | remove topmost stack slot |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| dup1 ... dup16 | | copy ith stack slot to the top (counting from top) |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| swap1 ... swap1 | `*` | swap topmost and ith stack slot below it |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| mload(p) | | mem[p..(p+32)) |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| mstore(p, v) | `-` | mem[p..(p+32)) := v |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| mstore8(p, v) | `-` | mem[p] := v & 0xff - only modifies a single byte |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| sload(p) | | storage[p] |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| sstore(p, v) | `-` | storage[p] := v |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| msize | | size of memory, i.e. largest accessed memory index |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| gas | | gas still available to execution |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| address | | address of the current contract / execution context |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| balance(a) | | wei balance at address a |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| caller | | call sender (excluding delegatecall) |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| callvalue | | wei sent together with the current call |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| calldataload(p) | | call data starting from position p (32 bytes) |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| calldatasize | | size of call data in bytes |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| calldatacopy(t, f, s) | `-` | copy s bytes from calldata at position f to mem at position t |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| codesize | | size of the code of the current contract / execution context |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| codecopy(t, f, s) | `-` | copy s bytes from code at position f to mem at position t |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| extcodesize(a) | | size of the code at address a |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| extcodecopy(a, t, f, s) | `-` | like codecopy(t, f, s) but take code at address a |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| create(v, p, s) | | create new contract with code mem[p..(p+s)) and send v wei |
| | | and return the new address |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| call(g, a, v, in, | | call contract at address a with input mem[in..(in+insize)] |
| insize, out, outsize) | | providing g gas and v wei and output area |
| | | mem[out..(out+outsize)] returting 1 on error (out of gas) |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| callcode(g, a, v, in, | | identical to call but only use the code from a and stay |
| insize, out, outsize) | | in the context of the current contract otherwise |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| delegatecall(g, a, in, | | identical to callcode but also keep `caller` and `callvalue` |
| insize, out, outsize) | | |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| return(p, s) | `*` | end execution, return data mem[p..(p+s)) |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| selfdestruct(a) | `*` | end execution, destroy current contract and send funds to a |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| log0(p, s) | `-` | log without topics and data mem[p..(p+s)) |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| log1(p, s, t1) | `-` | log with topic t1 and data mem[p..(p+s)) |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| log2(p, s, t1, t2) | `-` | log with topics t1, t2 and data mem[p..(p+s)) |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| log3(p, s, t1, t2, t3) | `-` | log with topics t1, t2, t3 and data mem[p..(p+s)) |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| log4(p, s, t1, t2, t3, | `-` | log with topics t1, t2, t3, t4 and data mem[p..(p+s)) |
| t4) | | |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| origin | | transaction sender |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| gasprice | | gas price of the transaction |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| blockhash(b) | | hash of block nr b - only for last 256 blocks excluding current |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| coinbase | | current mining beneficiary |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| timestamp | | timestamp of the current block in seconds since the epoch |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| number | | current block number |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| difficulty | | difficulty of the current block |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
| gaslimit | | block gas limit of the current block |
+-----------------------+------+---------------------------------------------------------------+
+-------------------------+------+-----------------------------------------------------------------+
Literals
--------

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@ -713,7 +713,10 @@ In the case of a `contract A` calling a new instance of `contract B`, parenthese
`new B` because `B.value` would refer to a member of `B` called `value`.
You will need to make sure that you have both contracts aware of each other's presence.
In this example::
contract B {}
contract A {
address child;

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@ -20,9 +20,11 @@ Storage
contract SimpleStorage {
uint storedData;
function set(uint x) {
storedData = x;
}
function get() constant returns (uint retVal) {
return storedData;
}
@ -88,10 +90,12 @@ registering with username and password - all you need is an Ethereum keypair.
function Coin() {
minter = msg.sender;
}
function mint(address receiver, uint amount) {
if (msg.sender != minter) return;
balances[receiver] += amount;
}
function send(address receiver, uint amount) {
if (balances[msg.sender] < amount) return;
balances[msg.sender] -= amount;

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@ -51,9 +51,11 @@ There are some types in Solidity's type system that have no counterpart in the s
if (useB) f = b;
return f(x);
}
function a(uint x) returns (uint z) {
return x * x;
}
function b(uint x) returns (uint z) {
return 2 * x;
}

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@ -292,7 +292,7 @@ activate themselves.
}
Blind Auction
================
=============
The previous open auction is extended to a blind auction
in the following. The advantage of a blind auction is

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@ -171,21 +171,21 @@ to and from all integer types but implicit conversion is not allowed.
enum ActionChoices { GoLeft, GoRight, GoStraight, SitStill }
ActionChoices choice;
ActionChoices constant defaultChoice = ActionChoices.GoStraight;
function setGoStraight()
{
function setGoStraight() {
choice = ActionChoices.GoStraight;
}
// Since enum types are not part of the ABI, the signature of "getChoice"
// will automatically be changed to "getChoice() returns (uint8)"
// for all matters external to Solidity. The integer type used is just
// large enough to hold all enum values, i.e. if you have more values,
// `uint16` will be used and so on.
function getChoice() returns (ActionChoices)
{
function getChoice() returns (ActionChoices) {
return choice;
}
function getDefaultChoice() returns (uint)
{
function getDefaultChoice() returns (uint) {
return uint(defaultChoice);
}
}
@ -226,8 +226,9 @@ memory-stored reference type does not create a copy.
::
contract c {
contract C {
uint[] x; // the data location of x is storage
// the data location of memoryArray is memory
function f(uint[] memoryArray) {
x = memoryArray; // works, copies the whole array to storage
@ -244,6 +245,7 @@ memory-stored reference type does not create a copy.
g(x); // calls g, handing over a reference to x
h(x); // calls h and creates an independent, temporary copy in memory
}
function g(uint[] storage storageArray) internal {}
function h(uint[] memoryArray) {}
}
@ -343,19 +345,23 @@ Members
// Note that the following is not a pair of arrays but an array of pairs.
bool[2][] m_pairsOfFlags;
// newPairs is stored in memory - the default for function arguments
function setAllFlagPairs(bool[2][] newPairs) {
// assignment to a storage array replaces the complete array
m_pairsOfFlags = newPairs;
}
function setFlagPair(uint index, bool flagA, bool flagB) {
// access to a non-existing index will throw an exception
m_pairsOfFlags[index][0] = flagA;
m_pairsOfFlags[index][1] = flagB;
}
function changeFlagArraySize(uint newSize) {
// if the new size is smaller, removed array elements will be cleared
m_pairsOfFlags.length = newSize;
}
function clear() {
// these clear the arrays completely
delete m_pairsOfFlags;
@ -363,7 +369,9 @@ Members
// identical effect here
m_pairsOfFlags.length = 0;
}
bytes m_byteData;
function byteArrays(bytes data) {
// byte arrays ("bytes") are different as they are stored without padding,
// but can be treated identical to "uint8[]"
@ -372,9 +380,11 @@ Members
m_byteData[3] = 8;
delete m_byteData[2];
}
function addFlag(bool[2] flag) returns (uint) {
return m_pairsOfFlags.push(flag);
}
function createMemoryArray(uint size) returns (bytes) {
// Dynamic memory arrays are created using `new`:
uint[2][] memory arrayOfPairs = new uint[2][](size);
@ -405,6 +415,7 @@ shown in the following example:
address addr;
uint amount;
}
struct Campaign {
address beneficiary;
uint fundingGoal;
@ -412,13 +423,16 @@ shown in the following example:
uint amount;
mapping (uint => Funder) funders;
}
uint numCampaigns;
mapping (uint => Campaign) campaigns;
function newCampaign(address beneficiary, uint goal) returns (uint campaignID) {
campaignID = numCampaigns++; // campaignID is return variable
// Creates new struct and saves in storage. We leave out the mapping type.
campaigns[campaignID] = Campaign(beneficiary, goal, 0, 0);
}
function contribute(uint campaignID) {
Campaign c = campaigns[campaignID];
// Creates a new temporary memory struct, initialised with the given values
@ -427,6 +441,7 @@ shown in the following example:
c.funders[c.numFunders++] = Funder({addr: msg.sender, amount: msg.value});
c.amount += msg.value;
}
function checkGoalReached(uint campaignID) returns (bool reached) {
Campaign c = campaigns[campaignID];
if (c.amount < c.fundingGoal)
@ -497,6 +512,7 @@ It is important to note that `delete a` really behaves like an assignment to `a`
contract DeleteExample {
uint data;
uint[] dataArray;
function f() {
uint x = data;
delete x; // sets x to 0, does not affect data