Merge pull request #3455 from ethereum/codesizemetric

Code size metric.

2 files changed, 101 insertions, 0 deletions

diff --git a/libjulia/optimiser/Metrics.cpp b/libjulia/optimiser/Metrics.cpp
new file mode 100644
index 00000000..eaa1494f
--- /dev/null
+++ b/libjulia/optimiser/Metrics.cpp
@@ -0,0 +1,52 @@
+/*(
+	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/>.
+*/
+/**
+* Module providing metrics for the optimizer.
+*/
+
+#include <libjulia/optimiser/Metrics.h>
+
+#include <libsolidity/inlineasm/AsmData.h>
+
+using namespace dev;
+using namespace dev::julia;
+
+size_t CodeSize::codeSize(Statement const& _statement)
+{
+	CodeSize cs;
+	cs.visit(_statement);
+	return cs.m_size;
+}
+
+size_t CodeSize::codeSize(Expression const& _expression)
+{
+	CodeSize cs;
+	cs.visit(_expression);
+	return cs.m_size;
+}
+
+void CodeSize::visit(Statement const& _statement)
+{
+	++m_size;
+	ASTWalker::visit(_statement);
+}
+
+void CodeSize::visit(Expression const& _expression)
+{
+	++m_size;
+	ASTWalker::visit(_expression);
+}
diff --git a/libjulia/optimiser/Metrics.h b/libjulia/optimiser/Metrics.h
new file mode 100644
index 00000000..ff058fc3
--- /dev/null
+++ b/libjulia/optimiser/Metrics.h
@@ -0,0 +1,49 @@
+/*
+	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/>.
+*/
+/**
+ * Module providing metrics for the optimizer.
+ */
+
+#pragma once
+
+#include <libjulia/optimiser/ASTWalker.h>
+
+namespace dev
+{
+namespace julia
+{
+
+class CodeSize: public ASTWalker
+{
+public:
+	/// Returns a metric for the code size of an AST element.
+	/// More specifically, it returns the number of AST nodes.
+	static size_t codeSize(Statement const& _statement);
+	/// Returns a metric for the code size of an AST element.
+	/// More specifically, it returns the number of AST nodes.
+	static size_t codeSize(Expression const& _expression);
+
+private:
+	virtual void visit(Statement const& _statement) override;
+	virtual void visit(Expression const& _expression) override;
+
+private:
+	size_t m_size = 0;
+};
+
+}
+}