ProTradex(PRT)普瑞緹/提智能合約系統(tǒng)開發(fā)實(shí)現(xiàn)技術(shù)方案及源碼詳情
區(qū)塊鏈?zhǔn)欠植际綌?shù)據(jù)存儲(chǔ)、點(diǎn)對(duì)點(diǎn)傳輸、共識(shí)機(jī)制、加密算法等計(jì)算機(jī)技術(shù)的新型應(yīng)用模式。
區(qū)塊鏈助推供應(yīng)鏈上的數(shù)據(jù)更加透明,供應(yīng)鏈上的企業(yè)可以準(zhǔn)確的使用端到端的透明數(shù)據(jù),區(qū)塊鏈技術(shù)可以有效的對(duì)供應(yīng)鏈上企業(yè)的交易進(jìn)行數(shù)字化的處理,并且可以建立一個(gè)分散式的不可更改的所有交易記錄,可以實(shí)現(xiàn)數(shù)據(jù)的實(shí)時(shí)共享,有效的降低數(shù)據(jù)信息獲取的時(shí)間成本。
狹義來(lái)講,區(qū)塊鏈?zhǔn)且环N按照時(shí)間順序?qū)?shù)據(jù)區(qū)塊以順序相連的方式組合成的一種鏈?zhǔn)綌?shù)據(jù)結(jié)構(gòu),并以密碼學(xué)方式保證的不可篡改和不可偽造的分布式賬本。
廣義來(lái)講,區(qū)塊鏈技術(shù)是利用塊鏈?zhǔn)綌?shù)據(jù)結(jié)構(gòu)來(lái)驗(yàn)證與存儲(chǔ)數(shù)據(jù)、模式設(shè)計(jì):I35詳情7O98案例O7I8,利用分布式節(jié)點(diǎn)共識(shí)算法來(lái)生成和更新數(shù)據(jù)、利用密碼學(xué)的方式保證數(shù)據(jù)傳輸和訪問(wèn)的安全、利用由自動(dòng)化腳本代碼組成的智能合約來(lái)編程和操作數(shù)據(jù)的一種全新的分布式基礎(chǔ)架構(gòu)與計(jì)算方式。
AssemblyBlock='{'AssemblyItem*'}'
AssemblyItem=
Identifier|
AssemblyBlock|
FunctionalAssemblyExpression|
AssemblyLocalDefinition|
FunctionalAssemblyAssignment|
AssemblyAssignment|
LabelDefinition|
AssemblySwitch|
AssemblyFunctionDefinition|
AssemblyFor|
'break'|'continue'|
SubAssembly|'dataSize''('Identifier')'|
LinkerSymbol|
'errorLabel'|'bytecodeSize'|
NumberLiteral|StringLiteral|HexLiteral
Identifier=[a-zA-Z_$][a-zA-Z_0-9]*
FunctionalAssemblyExpression=Identifier'('(AssemblyItem(','AssemblyItem)*)?')'
AssemblyLocalDefinition='let'IdentifierOrList':='FunctionalAssemblyExpression
FunctionalAssemblyAssignment=IdentifierOrList':='FunctionalAssemblyExpression
IdentifierOrList=Identifier|'('IdentifierList')'
IdentifierList=Identifier(','Identifier)*
AssemblyAssignment='=:'Identifier
LabelDefinition=Identifier':'
AssemblySwitch='switch'FunctionalAssemblyExpression AssemblyCase*
('default'AssemblyBlock)?
AssemblyCase='case'FunctionalAssemblyExpression AssemblyBlock
AssemblyFunctionDefinition='function'Identifier'('IdentifierList?')'
('->''('IdentifierList')')?AssemblyBlock
AssemblyFor='for'(AssemblyBlock|FunctionalAssemblyExpression)
FunctionalAssemblyExpression(AssemblyBlock|FunctionalAssemblyExpression)AssemblyBlock
SubAssembly='assembly'Identifier AssemblyBlock
LinkerSymbol='linkerSymbol''('StringLiteral')'
NumberLiteral=HexNumber|DecimalNumber
HexLiteral='hex'('"'([0-9a-fA-F]{2})*'"'|'''([0-9a-fA-F]{2})*''')
StringLiteral='"'([^"rn]|''.)*'"'
HexNumber='0x'[0-9a-fA-F]+
DecimalNumber=[0-9]+
{
mstore(0x40,0x60)//store the"free memory pointer"
//function dispatcher
switch div(calldataload(0),exp(2,226))
case 0xb3de648b{
let(r)=f(calldataload(4))
let ret:=$allocate(0x20)
mstore(ret,r)
return(ret,0x20)
}
default{revert(0,0)}
//memory allocator
function$allocate(size)->pos{
pos:=mload(0x40)
mstore(0x40,add(pos,size))
}
//the contract function
function f(x)->y{
y:=1
for{let i:=0}lt(i,x){i:=add(i,1)}{
y:=mul(2,y)
}
}
}