From f41591b3ddfd3e5c065271058dadb3c6b7f31bbb Mon Sep 17 00:00:00 2001
From: Leonardo Alt <leonardoaltt@gmail.com>
Date: Wed, 17 Jan 2018 21:02:23 +0100
Subject: [SMTChecker] A little refactoring on SSA vars

---
 libsolidity/formal/SymbolicIntVariable.cpp | 54 ++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 libsolidity/formal/SymbolicIntVariable.cpp

(limited to 'libsolidity/formal/SymbolicIntVariable.cpp')

diff --git a/libsolidity/formal/SymbolicIntVariable.cpp b/libsolidity/formal/SymbolicIntVariable.cpp
new file mode 100644
index 00000000..6ed7037f
--- /dev/null
+++ b/libsolidity/formal/SymbolicIntVariable.cpp
@@ -0,0 +1,54 @@
+/*
+	This file is part of solidity.
+
+	solidity is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	solidity is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <libsolidity/formal/SymbolicIntVariable.h>
+
+#include <libsolidity/ast/AST.h>
+
+using namespace std;
+using namespace dev;
+using namespace dev::solidity;
+
+SymbolicIntVariable::SymbolicIntVariable(Declaration const* _decl,
+	smt::SolverInterface&_interface)
+	: SymbolicVariable(_decl, _interface)
+{
+	solAssert(m_declaration->type()->category() == Type::Category::Integer, "");
+	m_expression = make_shared<smt::Expression>(m_interface.newFunction(uniqueSymbol(), smt::Sort::Int, smt::Sort::Int));
+}
+
+void SymbolicIntVariable::setZeroValue(int _seq)
+{
+	m_interface.addAssertion(valueAtSequence(_seq) == 0);
+}
+
+void SymbolicIntVariable::setUnknownValue(int _seq)
+{
+	auto const& intType = dynamic_cast<IntegerType const&>(*m_declaration->type());
+	m_interface.addAssertion(valueAtSequence(_seq) >= minValue(intType));
+	m_interface.addAssertion(valueAtSequence(_seq) <= maxValue(intType));
+}
+
+smt::Expression SymbolicIntVariable::minValue(IntegerType const& _t) const
+{
+	return smt::Expression(_t.minValue());
+}
+
+smt::Expression SymbolicIntVariable::maxValue(IntegerType const& _t) const
+{
+	return smt::Expression(_t.maxValue());
+}
-- 
cgit v1.2.3


From 3b2851ee4163bcfbca9e4e23650dfeee1a06653a Mon Sep 17 00:00:00 2001
From: Leonardo Alt <leonardoaltt@gmail.com>
Date: Sat, 17 Feb 2018 09:34:38 +0100
Subject: Integer min and max values placed under SymbolicIntVar instead of
 SMTChecker

---
 libsolidity/formal/SymbolicIntVariable.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'libsolidity/formal/SymbolicIntVariable.cpp')

diff --git a/libsolidity/formal/SymbolicIntVariable.cpp b/libsolidity/formal/SymbolicIntVariable.cpp
index 6ed7037f..c206f1cd 100644
--- a/libsolidity/formal/SymbolicIntVariable.cpp
+++ b/libsolidity/formal/SymbolicIntVariable.cpp
@@ -43,12 +43,12 @@ void SymbolicIntVariable::setUnknownValue(int _seq)
 	m_interface.addAssertion(valueAtSequence(_seq) <= maxValue(intType));
 }
 
-smt::Expression SymbolicIntVariable::minValue(IntegerType const& _t) const
+smt::Expression SymbolicIntVariable::minValue(IntegerType const& _t)
 {
 	return smt::Expression(_t.minValue());
 }
 
-smt::Expression SymbolicIntVariable::maxValue(IntegerType const& _t) const
+smt::Expression SymbolicIntVariable::maxValue(IntegerType const& _t)
 {
 	return smt::Expression(_t.maxValue());
 }
-- 
cgit v1.2.3


From cff0836c032ecee2710f1c17c49eec0a3b4aa9fc Mon Sep 17 00:00:00 2001
From: Leonardo Alt <leonardoaltt@gmail.com>
Date: Wed, 28 Feb 2018 18:00:13 +0100
Subject: Fix PR comments

---
 libsolidity/formal/SymbolicIntVariable.cpp | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

(limited to 'libsolidity/formal/SymbolicIntVariable.cpp')

diff --git a/libsolidity/formal/SymbolicIntVariable.cpp b/libsolidity/formal/SymbolicIntVariable.cpp
index c206f1cd..d08dc155 100644
--- a/libsolidity/formal/SymbolicIntVariable.cpp
+++ b/libsolidity/formal/SymbolicIntVariable.cpp
@@ -23,9 +23,11 @@ using namespace std;
 using namespace dev;
 using namespace dev::solidity;
 
-SymbolicIntVariable::SymbolicIntVariable(Declaration const* _decl,
-	smt::SolverInterface&_interface)
-	: SymbolicVariable(_decl, _interface)
+SymbolicIntVariable::SymbolicIntVariable(
+	Declaration const* _decl,
+	smt::SolverInterface& _interface
+):
+	SymbolicVariable(_decl, _interface)
 {
 	solAssert(m_declaration->type()->category() == Type::Category::Integer, "");
 	m_expression = make_shared<smt::Expression>(m_interface.newFunction(uniqueSymbol(), smt::Sort::Int, smt::Sort::Int));
-- 
cgit v1.2.3