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function.k
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function.k
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requires "solidity-syntax.k"
requires "configuration.k"
requires "contract.k"
module FUNCTION
imports SOLIDITY-SYNTAX
imports CONFIGURATION
imports CONTRACT
rule [function-definition]:
<k> #pcsContractPart(Ct:Id, function F:Id (Ps:FParameters) FQ:FunQuantifiers returns (Rs:FParameters) {B})
=> . ... </k>
<Contract>
<cname> Ct </cname>
(.Bag =>
<Function>
<fname> F </fname>
<inputParams> Ps </inputParams>
<Returns> Rs </Returns>
<quantifiers> FQ </quantifiers>
<visibility> .K </visibility>
<body> B </body>
</Function>)
...
</Contract>
rule
<k> #pcsContractPart(Ct:Id, function F:Id (Ps:FParameters) FQ:FunQuantifiers {B})
=> . ... </k>
<Contract>
<cname> Ct </cname>
(.Bag =>
<Function>
<fname> F </fname>
<inputParams> Ps </inputParams>
<Returns> .FParameters </Returns>
<quantifiers> FQ </quantifiers>
<visibility> .K </visibility>
<body> B </body>
</Function>)
...
</Contract>
rule
<k> #pcsContractPart(Ct:Id, function F:Id (Ps:FParameters) FQ:FunQuantifiers returns (Rs:FParameters);)
=> . ... </k>
<Contract>
<cname> Ct </cname>
(.Bag =>
<Function>
<fname> F </fname>
<inputParams> Ps </inputParams>
<Returns> Rs </Returns>
<quantifiers> FQ </quantifiers>
<visibility> .K </visibility>
<body> .Statements </body>
</Function>)
...
</Contract>
rule
<k> #pcsContractPart(Ct:Id, function F:Id (Ps:FParameters) FQ:FunQuantifiers;)
=> . ... </k>
<Contract>
<cname> Ct </cname>
(.Bag =>
<Function>
<fname> F </fname>
<inputParams> Ps </inputParams>
<Returns> .FParameters </Returns>
<quantifiers> FQ </quantifiers>
<visibility> .K </visibility>
<body> .Statements </body>
</Function>)
...
</Contract>
rule
<k> #pcsContractPart(Ct:Id, constructor (Ps:FParameters) FQ:FunQuantifiers {B}) => . ... </k>
<Contract>
<cname> Ct </cname>
(.Bag =>
<Function>
<fname> String2Id("constructor") </fname>
<inputParams> Ps </inputParams>
<Returns> .FParameters </Returns>
<quantifiers> FQ </quantifiers>
<visibility> .K </visibility>
<body> B </body>
</Function>)
<Constructor> _ => true </Constructor>
...
</Contract>
rule
<k> #pcsContractPart(Ct:Id, function (Ps:FParameters) FQ:FunQuantifiers {B})
=> . ... </k>
<Contract>
<cname> Ct </cname>
(.Bag =>
<Function>
<fname> String2Id("fallback") </fname>
<inputParams> Ps </inputParams>
<Returns> .FParameters </Returns>
<quantifiers> FQ </quantifiers>
<visibility> .K </visibility>
<body> B </body>
</Function>)
...
</Contract>
syntax SolidityItem
::= #CallBody(Statements)
| #Call(Id,Values)
| #InitParams(FParameters, Values)
| #InitParam(FParameter, Value)
| "#return"
| "#returnContract"
| #BindInputParams(FParameters, Values)
| #BindReturnParams(FParameters, Values)
| "#pushCallStack"
| "#popCallStack"
| #upDateCallStateBeforeExternalCall(Int)
| "#upDateCallStateAfterExternalCall"
| "#upDateCallStateBeforeInternalCall"
rule [External-Function-Call]:
<k> ( functionCall(C:Int; F:Id; Vs:Values) =>
#pushCallStack ~>
#upDateCallStateBeforeExternalCall(C) ~>
#Call(F,Vs) ~>
#upDateCallStateAfterExternalCall ~>
#popCallStack ~>
#returnContract
) ...
</k>
[structural]
rule [Internal-Function-Call]:
<k> (functionCall(F:Id; Vs:Values) =>
#pushCallStack ~>
#upDateCallStateBeforeInternalCall ~>
#Call(F,Vs) ~>
#popCallStack ~>
#return
) ...
</k>
[structural]
rule [Push-CallStack]:
<k> #pushCallStack => . ... </k>
<callState> CS </callState>
<callStack> ( .List => ListItem(CS) ) ... </callStack>
rule [Pop-CallStack]:
<k> #popCallStack => . ... </k>
<callState> _ => CS </callState>
<callStack> ( ListItem(CS) => .List ) ... </callStack>
rule [Update-CallStack-Before-ExternalCall]:
<k> #upDateCallStateBeforeExternalCall(C) => . ... </k>
<currentAccount> #account(C1,N1) => #account(C,N) </currentAccount>
<callState>
...
<caller> _ => #account(C1,N1) </caller>
<env> Rho:Map => CRho </env>
<callDepth> Dep => Dep +Int 1 </callDepth>
<abnormalMode> _ => false </abnormalMode>
<abnormalCode> _ => .K </abnormalCode>
<isExternalFunctionCall> EXFUNCALL => true </isExternalFunctionCall>
</callState>
<account>
<acctID> C </acctID>
<contractName> N </contractName>
<acctEnv> CRho:Map </acctEnv>
...
</account>
rule [Update-CallStack-After-ExternalCall]:
<k> #upDateCallStateAfterExternalCall => . ... </k>
<currentAccount> _ => C </currentAccount>
<callState>
...
<caller> C </caller>
</callState>
rule [Update-CallStack-Before-InternalCall]:
<k> #upDateCallStateBeforeInternalCall => . ... </k>
<currentAccount> #account(C,N) </currentAccount>
<callState>
...
<caller> CALLER => #account(C,N) </caller>
<callDepth> Dep => Dep +Int 1 </callDepth>
<abnormalMode> _ => false </abnormalMode>
<abnormalCode> _ => .K </abnormalCode>
<isExternalFunctionCall> EXFUNCALL => false </isExternalFunctionCall>
</callState>
rule
<k> #Call(F:Id, Vs:Values) => #BindInputParams(Ps, Vs) ~> #BindReturnParams(OPs, .Values) ~> #CallBody(Ss) ...</k>
<currentAccount> #account(C:Int,N:AccountId) </currentAccount>
<Contract>
<cname> N </cname>
<Function>
<fname> F </fname>
<inputParams> Ps:FParameters </inputParams>
<Returns> OPs:FParameters </Returns>
<body> Ss:Statements </body>
...
</Function>
...
</Contract>
rule
<k> #BindInputParams(Ps, Vs) => #InitParams(Ps, Vs) ...</k>
rule
<k> #BindReturnParams(OPs, Vs) => #InitParams(OPs, Vs) ...</k>
rule
<k> #InitParams(P:FParameter, Ps:FParameters, V:Value,Vs:Values)
=> #InitParam(P, V) ~> #InitParams(Ps, Vs) ...</k>
rule
<k> #InitParams(P:FParameter, Ps:FParameters, .Values)
=> #InitParam(P, #undef_Value) ~> #InitParams(Ps, .Values) ...</k>
rule
<k> #InitParams(.FParameters, .Values) => . ...</k>
rule
<k> #InitParam(T:TypeName S:StorageLocations X:Id, V) => #allocate(C, CN, #varInfo(X:Id, V:Value, T:TypeName, #mem, 1)) ...</k>
<currentAccount> #account(C:Int,CN:AccountId) </currentAccount>
rule
<k> #InitParam(T:TypeName, V) => . ...</k>
rule [Call-Function-Body]:
<k> #CallBody(S:Statement Ss:Statements) => #exeStmt(S) ~> #CallBody(Ss) ...</k>
rule
<k> #CallBody(.Statements) => . ...</k>
rule
<k> #exeStmt(S:SimpleStatement;) => S; ...</k>
<callState>
...
<abnormalMode> false </abnormalMode>
</callState>
rule
<k> #exeStmt(S:SimpleStatement;) => . ...</k>
<callState>
...
<abnormalMode> true </abnormalMode>
</callState>
rule [Local-Call-Return]:
<k> #return => V ... </k>
<result> V </result>
rule [External-Call-Return]:
<k> #returnContract => V ... </k>
<result> V </result>
rule [ReturnValue]:
<k> return V:ValueResult => #end_Exp ... </k>
<result> _ => V </result>
<callState>
...
<abnormalMode> _ => true </abnormalMode>
<abnormalCode> _ => #return# </abnormalCode>
</callState>
rule [Return]:
<k> return => #end_Exp ... </k>
<callState>
...
<abnormalMode> _ => true </abnormalMode>
<abnormalCode> _ => #return# </abnormalCode>
</callState>
endmodule