Merge pull request #2382 from ruchevits/combined-json-hashes

Allow including hashes of method signatures in --combined-json output

2 files changed, 11 insertions, 0 deletions

diff --git a/libsolidity/interface/CompilerStack.cpp b/libsolidity/interface/CompilerStack.cpp
index aca9ce39..b09108b0 100644
--- a/libsolidity/interface/CompilerStack.cpp
+++ b/libsolidity/interface/CompilerStack.cpp
@@ -481,6 +481,14 @@ Json::Value const& CompilerStack::natspec(Contract const& _contract, Documentati
 	return *(*doc);
 }
 
+Json::Value CompilerStack::functionHashes(ContractDefinition const& _contract)
+{
+	Json::Value functionHashes(Json::objectValue);
+	for (auto const& it: _contract.interfaceFunctions())
+		functionHashes[it.second->externalSignature()] = toHex(it.first.ref());
+	return functionHashes;
+}
+
 string const& CompilerStack::onChainMetadata(string const& _contractName) const
 {
 	if (m_stackState != CompilationSuccessful)
diff --git a/libsolidity/interface/CompilerStack.h b/libsolidity/interface/CompilerStack.h
index bffdeabd..3250429b 100644
--- a/libsolidity/interface/CompilerStack.h
+++ b/libsolidity/interface/CompilerStack.h
@@ -177,6 +177,9 @@ public:
 	/// @param type The type of the documentation to get.
 	/// Can be one of 4 types defined at @c DocumentationType
 	Json::Value const& natspec(std::string const& _contractName, DocumentationType _type) const;
+
+	Json::Value functionHashes(ContractDefinition const& _contract);
+
 	std::string const& onChainMetadata(std::string const& _contractName) const;
 	void useMetadataLiteralSources(bool _metadataLiteralSources) { m_metadataLiteralSources = _metadataLiteralSources; }