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authorchriseth <chris@ethereum.org>2017-12-20 20:46:43 +0800
committerAlex Beregszaszi <alex@rtfs.hu>2018-02-06 00:43:39 +0800
commit9c85589122473d623da7e3de0e301662f5d835c8 (patch)
tree6d3622dd5bd574d2ca63f9c1ba5688cb31cb4484 /libjulia
parent3c8b777b9b7e438e16a3cb60dece5af3753fc8d4 (diff)
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Utility to remove empty blocks.
Diffstat (limited to 'libjulia')
-rw-r--r--libjulia/optimiser/Utilities.cpp39
-rw-r--r--libjulia/optimiser/Utilities.h34
2 files changed, 73 insertions, 0 deletions
diff --git a/libjulia/optimiser/Utilities.cpp b/libjulia/optimiser/Utilities.cpp
new file mode 100644
index 00000000..ff108b89
--- /dev/null
+++ b/libjulia/optimiser/Utilities.cpp
@@ -0,0 +1,39 @@
+/*(
+ 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/>.
+*/
+/**
+ * Some useful snippets for the optimiser.
+ */
+
+#include <libjulia/optimiser/Utilities.h>
+
+#include <libsolidity/inlineasm/AsmData.h>
+
+#include <libdevcore/CommonData.h>
+
+#include <boost/range/algorithm_ext/erase.hpp>
+
+using namespace std;
+using namespace dev;
+using namespace dev::julia;
+
+void dev::julia::removeEmptyBlocks(Block& _block)
+{
+ auto isEmptyBlock = [](Statement const& _st) -> bool {
+ return _st.type() == typeid(Block) && boost::get<Block>(_st).statements.empty();
+ };
+ boost::range::remove_erase_if(_block.statements, isEmptyBlock);
+}
diff --git a/libjulia/optimiser/Utilities.h b/libjulia/optimiser/Utilities.h
new file mode 100644
index 00000000..88ba3f47
--- /dev/null
+++ b/libjulia/optimiser/Utilities.h
@@ -0,0 +1,34 @@
+/*
+ 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/>.
+*/
+/**
+ * Small useful snippets for the optimiser.
+ */
+
+#pragma once
+
+#include <libjulia/ASTDataForward.h>
+
+namespace dev
+{
+namespace julia
+{
+
+/// Removes statements that are just empty blocks (non-recursive).
+void removeEmptyBlocks(Block& _block);
+
+}
+}