refactoring parse() into two separate functions

libsolidity/interface/CompilerStack.cpp

@@ -128,14 +128,12 @@ bool CompilerStack::parse()
 	vector<string> sourcesToParse;
 	for (auto const& s: m_sources)
 		sourcesToParse.push_back(s.first);
-	map<string, SourceUnit const*> sourceUnitsByName;
 	for (size_t i = 0; i < sourcesToParse.size(); ++i)
 	{
 		string const& path = sourcesToParse[i];
 		Source& source = m_sources[path];
 		source.scanner->reset();
 		source.ast = Parser(m_errors).parse(source.scanner);
-		sourceUnitsByName[path] = source.ast.get();
 		if (!source.ast)
 			solAssert(!Error::containsOnlyWarnings(m_errors), "Parser returned null but did not report error.");
 		else
@@ -150,9 +148,14 @@ bool CompilerStack::parse()
 			}
 		}
 	}
-	if (!Error::containsOnlyWarnings(m_errors))
+	m_parseSuccessful = Error::containsOnlyWarnings(m_errors);
-		// errors while parsing. should stop before type checking
+	return m_parseSuccessful;
-		return false;
+}
+
+bool CompilerStack::analyze()
+{
+	if (m_sources.empty())
+		BOOST_THROW_EXCEPTION(CompilerError() << errinfo_comment("There are no sources to be analyzed."));
 
 	resolveImports();
 
@@ -173,6 +176,9 @@ bool CompilerStack::parse()
 		if (!resolver.registerDeclarations(*source->ast))
 			return false;
 
+	map<string, SourceUnit const*> sourceUnitsByName;
+	for (auto& source : m_sources)
+		sourceUnitsByName[source.first] = source.second.ast.get();
 	for (Source const* source: m_sourceOrder)
 		if (!resolver.performImports(*source->ast, sourceUnitsByName))
 			return false;
@@ -245,6 +251,17 @@ bool CompilerStack::parse(string const& _sourceCode)
 	return parse();
 }
 
+bool CompilerStack::parseAndAnalyze()
+{
+	return parse() && analyze();
+}
+
+bool CompilerStack::parseAndAnalyze(std::string const& _sourceCode)
+{
+	setSource(_sourceCode);
+	return parseAndAnalyze();
+}
+
 vector<string> CompilerStack::contractNames() const
 {
 	if (!m_parseSuccessful)
@@ -259,7 +276,7 @@ vector<string> CompilerStack::contractNames() const
 bool CompilerStack::compile(bool _optimize, unsigned _runs, map<string, h160> const& _libraries)
 {
 	if (!m_parseSuccessful)
-		if (!parse())
+		if (!parseAndAnalyze())
 			return false;
 
 	m_optimize = _optimize;
@@ -277,7 +294,7 @@ bool CompilerStack::compile(bool _optimize, unsigned _runs, map<string, h160> co
 
 bool CompilerStack::compile(string const& _sourceCode, bool _optimize, unsigned _runs)
 {
-	return parse(_sourceCode) && compile(_optimize, _runs);
+	return parseAndAnalyze(_sourceCode) && compile(_optimize, _runs);
 }
 
 void CompilerStack::link()

libsolidity/interface/CompilerStack.h

@@ -103,6 +103,16 @@ public:
 	/// Sets the given source code as the only source unit apart from standard sources and parses it.
 	/// @returns false on error.
 	bool parse(std::string const& _sourceCode);
+	/// performs the analyisis steps (imports, scopesetting, syntaxCheck, referenceResolving,
+	///  typechecking, staticAnalysis) on the set sources
+	/// @returns false on error.
+	bool analyze();
+	/// Parses and analyzes all source units that were added
+	/// @returns false on error.
+	bool parseAndAnalyze();
+	/// Sets the given source code as the only source unit apart from standard sources and parses and analyzes it.
+	/// @returns false on error.
+	bool parseAndAnalyze(std::string const& _sourceCode);
 	/// @returns a list of the contract names in the sources.
 	std::vector<std::string> contractNames() const;
 	std::string defaultContractName() const;

test/libsolidity/ASTJSON.cpp

@@ -41,7 +41,7 @@ BOOST_AUTO_TEST_CASE(smoke_test)
 {
 	CompilerStack c;
 	c.addSource("a", "contract C {}");
-	c.parse();
+	c.parseAndAnalyze();
 	map<string, unsigned> sourceIndices;
 	sourceIndices["a"] = 1;
 	Json::Value astJson = ASTJsonConverter(c.ast("a"), sourceIndices).json();
@@ -52,7 +52,7 @@ BOOST_AUTO_TEST_CASE(source_location)
 {
 	CompilerStack c;
 	c.addSource("a", "contract C { function f() { var x = 2; x++; } }");
-	c.parse();
+	c.parseAndAnalyze();
 	map<string, unsigned> sourceIndices;
 	sourceIndices["a"] = 1;
 	Json::Value astJson = ASTJsonConverter(c.ast("a"), sourceIndices).json();
@@ -66,7 +66,7 @@ BOOST_AUTO_TEST_CASE(inheritance_specifier)
 {
 	CompilerStack c;
 	c.addSource("a", "contract C1 {} contract C2 is C1 {}");
-	c.parse();
+	c.parseAndAnalyze();
 	map<string, unsigned> sourceIndices;
 	sourceIndices["a"] = 1;
 	Json::Value astJson = ASTJsonConverter(c.ast("a"), sourceIndices).json();
@@ -81,7 +81,7 @@ BOOST_AUTO_TEST_CASE(using_for_directive)
 {
 	CompilerStack c;
 	c.addSource("a", "library L {} contract C { using L for uint; }");
-	c.parse();
+	c.parseAndAnalyze();
 	map<string, unsigned> sourceIndices;
 	sourceIndices["a"] = 1;
 	Json::Value astJson = ASTJsonConverter(c.ast("a"), sourceIndices).json();
@@ -98,7 +98,7 @@ BOOST_AUTO_TEST_CASE(enum_value)
 {
 	CompilerStack c;
 	c.addSource("a", "contract C { enum E { A, B } }");
-	c.parse();
+	c.parseAndAnalyze();
 	map<string, unsigned> sourceIndices;
 	sourceIndices["a"] = 1;
 	Json::Value astJson = ASTJsonConverter(c.ast("a"), sourceIndices).json();
@@ -115,7 +115,7 @@ BOOST_AUTO_TEST_CASE(modifier_definition)
 {
 	CompilerStack c;
 	c.addSource("a", "contract C { modifier M(uint i) { _; } function F() M(1) {} }");
-	c.parse();
+	c.parseAndAnalyze();
 	map<string, unsigned> sourceIndices;
 	sourceIndices["a"] = 1;
 	Json::Value astJson = ASTJsonConverter(c.ast("a"), sourceIndices).json();
@@ -129,7 +129,7 @@ BOOST_AUTO_TEST_CASE(modifier_invocation)
 {
 	CompilerStack c;
 	c.addSource("a", "contract C { modifier M(uint i) { _; } function F() M(1) {} }");
-	c.parse();
+	c.parseAndAnalyze();
 	map<string, unsigned> sourceIndices;
 	sourceIndices["a"] = 1;
 	Json::Value astJson = ASTJsonConverter(c.ast("a"), sourceIndices).json();
@@ -145,7 +145,7 @@ BOOST_AUTO_TEST_CASE(event_definition)
 {
 	CompilerStack c;
 	c.addSource("a", "contract C { event E(); }");
-	c.parse();
+	c.parseAndAnalyze();
 	map<string, unsigned> sourceIndices;
 	sourceIndices["a"] = 1;
 	Json::Value astJson = ASTJsonConverter(c.ast("a"), sourceIndices).json();
@@ -159,7 +159,7 @@ BOOST_AUTO_TEST_CASE(array_type_name)
 {
 	CompilerStack c;
 	c.addSource("a", "contract C { uint[] i; }");
-	c.parse();
+	c.parseAndAnalyze();
 	map<string, unsigned> sourceIndices;
 	sourceIndices["a"] = 1;
 	Json::Value astJson = ASTJsonConverter(c.ast("a"), sourceIndices).json();
@@ -172,7 +172,7 @@ BOOST_AUTO_TEST_CASE(placeholder_statement)
 {
 	CompilerStack c;
 	c.addSource("a", "contract C { modifier M { _; } }");
-	c.parse();
+	c.parseAndAnalyze();
 	map<string, unsigned> sourceIndices;
 	sourceIndices["a"] = 1;
 	Json::Value astJson = ASTJsonConverter(c.ast("a"), sourceIndices).json();
@@ -185,7 +185,7 @@ BOOST_AUTO_TEST_CASE(non_utf8)
 {
 	CompilerStack c;
 	c.addSource("a", "contract C { function f() { var x = hex\"ff\"; } }");
-	c.parse();
+	c.parseAndAnalyze();
 	map<string, unsigned> sourceIndices;
 	sourceIndices["a"] = 1;
 	Json::Value astJson = ASTJsonConverter(c.ast("a"), sourceIndices).json();
@@ -204,7 +204,7 @@ BOOST_AUTO_TEST_CASE(function_type)
 		"contract C { function f(function() external payable returns (uint) x) "
 		"returns (function() external constant returns (uint)) {} }"
 	);
-	c.parse();
+	c.parseAndAnalyze();
 	map<string, unsigned> sourceIndices;
 	sourceIndices["a"] = 1;
 	Json::Value astJson = ASTJsonConverter(c.ast("a"), sourceIndices).json();

test/libsolidity/SolidityABIJSON.cpp

@@ -42,7 +42,7 @@ public:
 
 	void checkInterface(std::string const& _code, std::string const& _expectedInterfaceString)
 	{
-		ETH_TEST_REQUIRE_NO_THROW(m_compilerStack.parse("pragma solidity >=0.0;\n" + _code), "Parsing contract failed");
+		ETH_TEST_REQUIRE_NO_THROW(m_compilerStack.parseAndAnalyze("pragma solidity >=0.0;\n" + _code), "Parsing contract failed");
 
 		Json::Value generatedInterface = m_compilerStack.metadata("", DocumentationType::ABIInterface);
 		Json::Value expectedInterface;

test/libsolidity/SolidityNatspecJSON.cpp

@@ -45,7 +45,7 @@ public:
 		bool _userDocumentation
 	)
 	{
-		ETH_TEST_REQUIRE_NO_THROW(m_compilerStack.parse("pragma solidity >=0.0;\n" + _code), "Parsing failed");
+		ETH_TEST_REQUIRE_NO_THROW(m_compilerStack.parseAndAnalyze("pragma solidity >=0.0;\n" + _code), "Parsing failed");
 
 		Json::Value generatedDocumentation;
 		if (_userDocumentation)
@@ -63,7 +63,7 @@ public:
 
 	void expectNatspecError(std::string const& _code)
 	{
-		BOOST_CHECK(!m_compilerStack.parse(_code));
+		BOOST_CHECK(!m_compilerStack.parseAndAnalyze(_code));
 		BOOST_REQUIRE(Error::containsErrorOfType(m_compilerStack.errors(), Error::Type::DocstringParsingError));
 	}