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Read files via callback.

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This commit is contained in:
chriseth 2016-01-26 16:25:36 +01:00
parent 9b9d10b4a8
commit ebc1dce073
2 changed files with 42 additions and 6 deletions
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2
solc/CMakeLists.txt
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@ -18,7 +18,7 @@ else()
endif()
if (EMSCRIPTEN)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -s EXPORTED_FUNCTIONS='[\"_compileJSON\",\"_version\",\"_compileJSONMulti\"]'")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -s EXPORTED_FUNCTIONS='[\"_compileJSON\",\"_version\",\"_compileJSONMulti\",\"_compileJSONCallback\"]' -s RESERVED_FUNCTION_POINTERS=20")
add_executable(soljson jsonCompiler.cpp ${HEADERS})
eth_use(soljson REQUIRED Solidity::solidity)
else()

46
solc/jsonCompiler.cpp
View File

@ -41,6 +41,12 @@ using namespace std;
using namespace dev;
using namespace solidity;
extern "C" {
/// Callback used to retrieve additional source files. "Returns" two pointers that should be
/// heap-allocated and are free'd by the caller.
typedef void (*CStyleReadFileCallback)(char const* _path, char** o_contents, char** o_error);
}
string formatError(Exception const& _exception, string const& _name, CompilerStack const& _compiler)
{
ostringstream errorOutput;
@ -114,11 +120,36 @@ Json::Value estimateGas(CompilerStack const& _compiler, string const& _contract)
return gasEstimates;
}
string compile(StringMap const& _sources, bool _optimize)
string compile(StringMap const& _sources, bool _optimize, CStyleReadFileCallback _readCallback)
{
Json::Value output(Json::objectValue);
Json::Value errors(Json::arrayValue);
CompilerStack compiler;
CompilerStack::ReadFileCallback readCallback;
if (_readCallback)
{
readCallback = [=](string const& _path) -> pair<string, string>
{
char* contents_c = nullptr;
char* error_c = nullptr;
_readCallback(_path.c_str(), &contents_c, &error_c);
string contents;
string error;
if (!contents_c && !error_c)
error = "File not found.";
if (contents_c)
{
contents = string(contents_c);
free(contents_c);
}
if (error_c)
{
error = string(error_c);
free(error_c);
}
return make_pair(move(contents), move(error));
};
}
CompilerStack compiler(true, readCallback);
bool success = false;
try
{
@ -188,7 +219,7 @@ string compile(StringMap const& _sources, bool _optimize)
return Json::FastWriter().write(output);
}
string compileMulti(string const& _input, bool _optimize)
string compileMulti(string const& _input, bool _optimize, CStyleReadFileCallback _readCallback = nullptr)
{
Json::Reader reader;
Json::Value input;
@ -207,7 +238,7 @@ string compileMulti(string const& _input, bool _optimize)
if (jsonSources.isObject())
for (auto const& sourceName: jsonSources.getMemberNames())
sources[sourceName] = jsonSources[sourceName].asString();
return compile(sources, _optimize);
return compile(sources, _optimize, _readCallback);
}
}
@ -215,7 +246,7 @@ string compileSingle(string const& _input, bool _optimize)
{
StringMap sources;
sources[""] = _input;
return compile(sources, _optimize);
return compile(sources, _optimize, nullptr);
}
static string s_outputBuffer;
@ -236,4 +267,9 @@ extern char const* compileJSONMulti(char const* _input, bool _optimize)
s_outputBuffer = compileMulti(_input, _optimize);
return s_outputBuffer.c_str();
}
extern char const* compileJSONCallback(char const* _input, bool _optimize, CStyleReadFileCallback _readCallback)
{
s_outputBuffer = compileMulti(_input, _optimize, _readCallback);
return s_outputBuffer.c_str();
}
}