//Function to generate constructor call and add IdentifierExpressions from contract users.
private List <BoogieCmd> GenerateConstructorCall(ContractDefinition contract)
{
List <BoogieCmd> localStmtList = new List <BoogieCmd>();
string callee = Conversion_Utility_Tool.GetCanonicalConstructorName(contract);
//Identify third part users of the conttract.
//sender refers external party call.
List <BoogieExpr> constructorCallInputs = new List <BoogieExpr>();
constructorCallInputs.Add(new BoogieIdentifierExpr("this"));
constructorCallInputs.Add(new BoogieIdentifierExpr("msgsender_MSG"));
constructorCallInputs.Add(new BoogieIdentifierExpr("msgvalue_MSG"));
if (classTranslatorContext.checkConstructorExists(contract) == true)
{
FunctionDefinition constructor = classTranslatorContext.retrieveConstructor(contract);
foreach (VariableDeclaration param in constructor.Parameters.Parameters)
{
string name = Conversion_Utility_Tool.GetCanonicalLocalVariableName(param, classTranslatorContext);
constructorCallInputs.Add(new BoogieIdentifierExpr(name));
if (param.TypeName is ArrayTypeName)
{
localStmtList.Add(new BoogieCallCmd(
"FreshRefGenerator",
new List <BoogieExpr>(), new List <BoogieIdentifierExpr>()
{
new BoogieIdentifierExpr(name)
}));
}
}
}
if (Flags_HelperClass.InstrumentGas)
{
Conversion_Utility_Tool.havocGas(localStmtList);
}
localStmtList.Add(new BoogieCallCmd(callee, constructorCallInputs, null));
return(localStmtList);
}
/// <summary>
/// generate a non-deterministic choice block to call every public visible functions except constructors
///
/// </summary>
/// <param name="contracts"></param>
/// <param name="context"></param>
/// <param name="callBackTarget">If non-null, this will be the msg.sender for calling back into the contracts</param>
/// <returns></returns>
public static BoogieIfCmd GenerateChoiceBlock(List <ContractDefinition> contracts, AST_Handler context, Tuple <string, string> callBackTarget = null)
{
BoogieIfCmd ifCmd = null;
int j = 0;
foreach (var contract in contracts)
{
if (contract.ContractKind != EnumContractKind.CONTRACT)
{
continue;
}
HashSet <FunctionDefinition> funcDefs = context.RetrieveVisibleFunctions(contract);
List <FunctionDefinition> publicFuncDefs = new List <FunctionDefinition>();
foreach (FunctionDefinition funcDef in funcDefs)
{
if (funcDef.ofConstructorType)
{
continue;
}
if (funcDef.ofFallBackType)
{
continue; //let us not call fallback directly in harness
}
if (funcDef.Visibility == EnumVisibility.PUBLIC || funcDef.Visibility == EnumVisibility.EXTERNAL)
{
publicFuncDefs.Add(funcDef);
}
}
for (int i = publicFuncDefs.Count - 1; i >= 0; --i)
{
j++;
BoogieExpr guard = new BoogieBinaryOperation(BoogieBinaryOperation.Opcode.EQ,
new BoogieIdentifierExpr("choice"),
new BoogieLiteralExpr(j));
BoogieStmtList thenBody = new BoogieStmtList();
FunctionDefinition funcDef = publicFuncDefs[i];
string callee = Conversion_Utility_Tool.GetCanonicalFunctionName(funcDef, context);
List <BoogieExpr> inputs = new List <BoogieExpr>()
{
// let us just call back into the calling contract
callBackTarget != null ? new BoogieIdentifierExpr(callBackTarget.Item1) : new BoogieIdentifierExpr("this"),
callBackTarget != null ? new BoogieIdentifierExpr(callBackTarget.Item2) : new BoogieIdentifierExpr("msgsender_MSG"),
new BoogieIdentifierExpr("msgvalue_MSG"),
};
var inpParamCount = 0;
foreach (VariableDeclaration param in funcDef.Parameters.Parameters)
{
string name = $"__arg_{inpParamCount++}_" + funcDef.Name;
if (!string.IsNullOrEmpty(param.Name))
{
name = Conversion_Utility_Tool.GetCanonicalLocalVariableName(param, context);
}
inputs.Add(new BoogieIdentifierExpr(name));
if (param.TypeName is ArrayTypeName array)
{
thenBody.AddStatement(new BoogieCallCmd(
"FreshRefGenerator",
new List <BoogieExpr>(), new List <BoogieIdentifierExpr>()
{
new BoogieIdentifierExpr(name)
}));
}
}
List <BoogieIdentifierExpr> outputs = new List <BoogieIdentifierExpr>();
var retParamCount = 0;
foreach (VariableDeclaration param in funcDef.ReturnParameters.Parameters)
{
string name = $"__ret_{retParamCount++}_" + funcDef.Name;
if (!string.IsNullOrEmpty(param.Name))
{
name = Conversion_Utility_Tool.GetCanonicalLocalVariableName(param, context);
}
outputs.Add(new BoogieIdentifierExpr(name));
}
if (Flags_HelperClass.InstrumentGas)
{
havocGas(thenBody);
}
BoogieCallCmd callCmd = new BoogieCallCmd(callee, inputs, outputs);
thenBody.AddStatement(callCmd);
BoogieStmtList elseBody = ifCmd == null ? null : BoogieStmtList.MakeSingletonStmtList(ifCmd);
ifCmd = new BoogieIfCmd(guard, thenBody, elseBody);
}
}
return(ifCmd);
}
public static List <BoogieVariable> CollectLocalVars(List <ContractDefinition> contracts, AST_Handler context)
{
Debug.Assert(contracts.Count > 0, "Internal exception: expecting at least one contract here");
List <BoogieVariable> localVars = new List <BoogieVariable>()
{
new BoogieLocalVariable(new BoogieTypedIdent("this", BoogieType.Ref)),
new BoogieLocalVariable(new BoogieTypedIdent("msgsender_MSG", BoogieType.Ref)),
new BoogieLocalVariable(new BoogieTypedIdent("msgvalue_MSG", BoogieType.Int)),
new BoogieLocalVariable(new BoogieTypedIdent("choice", BoogieType.Int)),
};
// use to remove duplicated variables by name
HashSet <string> uniqueVarNames = new HashSet <string>()
{
"this", "msgsender_MSG", "msgvalue_MSG", "choice"
};
foreach (var contract in contracts)
{
if (contract.ContractKind != EnumContractKind.CONTRACT)
{
continue;
}
// Consider all visible functions
HashSet <FunctionDefinition> funcDefs = context.RetrieveVisibleFunctions(contract);
foreach (FunctionDefinition funcDef in funcDefs)
{
if (funcDef.Visibility == EnumVisibility.PUBLIC || funcDef.Visibility == EnumVisibility.EXTERNAL)
{
var inpParamCount = 0;
foreach (VariableDeclaration param in funcDef.Parameters.Parameters)
{
string name = $"__arg_{inpParamCount++}_" + funcDef.Name;
if (!string.IsNullOrEmpty(param.Name))
{
name = Conversion_Utility_Tool.GetCanonicalLocalVariableName(param, context);
}
if (!uniqueVarNames.Contains(name))
{
BoogieType type = Conversion_Utility_Tool.GetBoogieTypeFromSolidityTypeName(param.TypeName);
BoogieVariable localVar = new BoogieLocalVariable(new BoogieTypedIdent(name, type));
localVars.Add(localVar);
uniqueVarNames.Add(name);
}
}
var retParamCount = 0;
foreach (VariableDeclaration param in funcDef.ReturnParameters.Parameters)
{
string name = $"__ret_{retParamCount++}_" + funcDef.Name;
if (!string.IsNullOrEmpty(param.Name))
{
name = Conversion_Utility_Tool.GetCanonicalLocalVariableName(param, context);
}
if (!uniqueVarNames.Contains(name))
{
BoogieType type = Conversion_Utility_Tool.GetBoogieTypeFromSolidityTypeName(param.TypeName);
BoogieVariable localVar = new BoogieLocalVariable(new BoogieTypedIdent(name, type));
localVars.Add(localVar);
uniqueVarNames.Add(name);
}
}
}
}
}
return(localVars);
}