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Merge pull request #3532 from aarlt/libdevcore_new_json_api

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Add new JSON API for better abstraction and for supporting strict JSON parsing
This commit is contained in:
Alex Beregszaszi 2018-02-20 22:33:14 +01:00 committed by GitHub
commit 70790d4729
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GPG Key ID: 4AEE18F83AFDEB23
15 changed files with 337 additions and 53 deletions
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2
Changelog.md
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@ -2,9 +2,9 @@
Features:
* Code Generator: Assert that ``k != 0`` for ``molmod(a, b, k)`` and ``addmod(a, b, k)`` as experimental 0.5.0 feature.
* Standard JSON: Reject badly formatted invalid JSON inputs.
* Type Checker: Disallow uninitialized storage pointers as experimental 0.5.0 feature.
Bugfixes:
* JSON-AST: Add "documentation" property to function, event and modifier definition.
* Resolver: Properly determine shadowing for imports with aliases.

4
libdevcore/CMakeLists.txt
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@ -2,7 +2,9 @@ file(GLOB sources "*.cpp")
file(GLOB headers "*.h")
add_library(devcore ${sources} ${headers})
target_link_libraries(devcore PRIVATE ${Boost_FILESYSTEM_LIBRARIES} ${Boost_REGEX_LIBRARIES} ${Boost_SYSTEM_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
target_link_libraries(devcore PRIVATE ${JSONCPP_LIBRARY} ${Boost_FILESYSTEM_LIBRARIES} ${Boost_REGEX_LIBRARIES} ${Boost_SYSTEM_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
target_include_directories(devcore SYSTEM PUBLIC ${Boost_INCLUDE_DIRS})
target_include_directories(devcore PUBLIC "${CMAKE_SOURCE_DIR}")
target_include_directories(devcore PUBLIC "${JSONCPP_INCLUDE_DIR}")
add_dependencies(devcore jsoncpp)
add_dependencies(devcore solidity_BuildInfo.h)

109
libdevcore/JSON.cpp Normal file
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@ -0,0 +1,109 @@
/*
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/>.
*/
/** @file JSON.cpp
* @author Alexander Arlt <alexander.arlt@arlt-labs.com>
* @date 2018
*/
#include "JSON.h"
#include <sstream>
#include <map>
#include <memory>
using namespace std;
namespace dev
{
namespace
{
/// StreamWriterBuilder that can be constructed with specific settings
class StreamWriterBuilder: public Json::StreamWriterBuilder
{
public:
explicit StreamWriterBuilder(map<string, string> const& _settings)
{
for (auto const& iter :_settings)
this->settings_[iter.first] = iter.second;
}
};
/// CharReaderBuilder with strict-mode settings
class StrictModeCharReaderBuilder: public Json::CharReaderBuilder
{
public:
StrictModeCharReaderBuilder()
{
Json::CharReaderBuilder::strictMode(&this->settings_);
}
};
/// Serialise the JSON object (@a _input) with specific builder (@a _builder)
/// \param _input JSON input string
/// \param _builder StreamWriterBuilder that is used to create new Json::StreamWriter
/// \return serialized json object
string print(Json::Value const& _input, Json::StreamWriterBuilder const& _builder)
{
stringstream stream;
unique_ptr<Json::StreamWriter> writer(_builder.newStreamWriter());
writer->write(_input, &stream);
return stream.str();
}
/// Parse a JSON string (@a _input) with specified builder (@ _builder) and writes resulting JSON object to (@a _json)
/// \param _builder CharReaderBuilder that is used to create new Json::CharReaders
/// \param _input JSON input string
/// \param _json [out] resulting JSON object
/// \param _errs [out] Formatted error messages
/// \return \c true if the document was successfully parsed, \c false if an error occurred.
bool parse(Json::CharReaderBuilder& _builder, string const& _input, Json::Value& _json, string* _errs)
{
unique_ptr<Json::CharReader> reader(_builder.newCharReader());
return reader->parse(_input.c_str(), _input.c_str() + _input.length(), &_json, _errs);
}
} // end anonymous namespace
string jsonPrettyPrint(Json::Value const& _input)
{
static map<string, string> settings{{"indentation", " "}};
static StreamWriterBuilder writerBuilder(settings);
return print(_input, writerBuilder);
}
string jsonCompactPrint(Json::Value const& _input)
{
static map<string, string> settings{{"indentation", ""}};
static StreamWriterBuilder writerBuilder(settings);
return print(_input, writerBuilder);
}
bool jsonParseStrict(string const& _input, Json::Value& _json, string* _errs /* = nullptr */)
{
static StrictModeCharReaderBuilder readerBuilder;
return parse(readerBuilder, _input, _json, _errs);
}
bool jsonParse(string const& _input, Json::Value& _json, string *_errs /* = nullptr */)
{
static Json::CharReaderBuilder readerBuilder;
return parse(readerBuilder, _input, _json, _errs);
}
} // namespace dev

31
libdevcore/JSON.h
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@ -24,21 +24,28 @@
#include <json/json.h>
namespace dev
{
#include <string>
namespace dev {
/// Serialise the JSON object (@a _input) with indentation
inline std::string jsonPrettyPrint(Json::Value const& _input)
{
return Json::StyledWriter().write(_input);
}
std::string jsonPrettyPrint(Json::Value const& _input);
/// Serialise the JSON object (@a _input) without indentation
inline std::string jsonCompactPrint(Json::Value const& _input)
{
Json::FastWriter writer;
writer.omitEndingLineFeed();
return writer.write(_input);
}
std::string jsonCompactPrint(Json::Value const& _input);
/// Parse a JSON string (@a _input) with enabled strict-mode and writes resulting JSON object to (@a _json)
/// \param _input JSON input string
/// \param _json [out] resulting JSON object
/// \param _errs [out] Formatted error messages
/// \return \c true if the document was successfully parsed, \c false if an error occurred.
bool jsonParseStrict(std::string const& _input, Json::Value& _json, std::string* _errs = nullptr);
/// Parse a JSON string (@a _input) and writes resulting JSON object to (@a _json)
/// \param _input JSON input string
/// \param _json [out] resulting JSON object
/// \param _errs [out] Formatted error messages
/// \return \c true if the document was successfully parsed, \c false if an error occurred.
bool jsonParse(std::string const& _input, Json::Value& _json, std::string* _errs = nullptr);
}

16
libsolc/libsolc.cpp
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@ -203,7 +203,7 @@ string compile(StringMap const& _sources, bool _optimize, CStyleReadFileCallback
{
Json::Value contractInput = ret["contracts"][sourceName][contractName];
Json::Value contractOutput = Json::objectValue;
contractOutput["interface"] = dev::jsonCompactPrint(contractInput["abi"]);
contractOutput["interface"] = jsonCompactPrint(contractInput["abi"]);
contractOutput["metadata"] = contractInput["metadata"];
contractOutput["functionHashes"] = contractInput["evm"]["methodIdentifiers"];
contractOutput["gasEstimates"] = translateGasEstimates(contractInput["evm"]["gasEstimates"]);
@ -219,7 +219,7 @@ string compile(StringMap const& _sources, bool _optimize, CStyleReadFileCallback
try
{
return dev::jsonCompactPrint(output);
return jsonCompactPrint(output);
}
catch (...)
{
@ -229,15 +229,15 @@ string compile(StringMap const& _sources, bool _optimize, CStyleReadFileCallback
string compileMulti(string const& _input, bool _optimize, CStyleReadFileCallback _readCallback = nullptr)
{
Json::Reader reader;
string errors;
Json::Value input;
if (!reader.parse(_input, input, false))
if (!jsonParseStrict(_input, input, &errors))
{
Json::Value errors(Json::arrayValue);
errors.append("Error parsing input JSON: " + reader.getFormattedErrorMessages());
Json::Value jsonErrors(Json::arrayValue);
jsonErrors.append("Error parsing input JSON: " + errors);
Json::Value output(Json::objectValue);
output["errors"] = errors;
return dev::jsonCompactPrint(output);
output["errors"] = jsonErrors;
return jsonCompactPrint(output);
}
else
{

7
libsolidity/interface/StandardCompiler.cpp
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@ -554,12 +554,11 @@ Json::Value StandardCompiler::compile(Json::Value const& _input)
string StandardCompiler::compile(string const& _input)
{
Json::Value input;
Json::Reader reader;
string errors;
try
{
if (!reader.parse(_input, input, false))
return jsonCompactPrint(formatFatalError("JSONError", reader.getFormattedErrorMessages()));
if (!jsonParseStrict(_input, input, &errors))
return jsonCompactPrint(formatFatalError("JSONError", errors));
}
catch(...)
{

2
test/Metadata.cpp
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@ -50,7 +50,7 @@ string bytecodeSansMetadata(string const& _bytecode)
bool isValidMetadata(string const& _metadata)
{
Json::Value metadata;
if (!Json::Reader().parse(_metadata, metadata, false))
if (!jsonParseStrict(_metadata, metadata))
return false;
if (

14
test/RPCSession.cpp
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@ -23,8 +23,7 @@
#include <libdevcore/CommonData.h>
#include <json/reader.h>
#include <json/writer.h>
#include <libdevcore/JSON.h>
#include <string>
#include <stdio.h>
@ -216,7 +215,7 @@ string RPCSession::personal_newAccount(string const& _password)
void RPCSession::test_setChainParams(vector<string> const& _accounts)
{
static std::string const c_configString = R"(
static string const c_configString = R"(
{
"sealEngine": "NoProof",
"params": {
@ -249,10 +248,10 @@ void RPCSession::test_setChainParams(vector<string> const& _accounts)
)";
Json::Value config;
BOOST_REQUIRE(Json::Reader().parse(c_configString, config));
BOOST_REQUIRE(jsonParseStrict(c_configString, config));
for (auto const& account: _accounts)
config["accounts"][account]["wei"] = "0x100000000000000000000000000000000000000000";
test_setChainParams(Json::FastWriter().write(config));
test_setChainParams(jsonCompactPrint(config));
}
void RPCSession::test_setChainParams(string const& _config)
@ -328,7 +327,7 @@ Json::Value RPCSession::rpcCall(string const& _methodName, vector<string> const&
BOOST_TEST_MESSAGE("Reply: " + reply);
Json::Value result;
BOOST_REQUIRE(Json::Reader().parse(reply, result, false));
BOOST_REQUIRE(jsonParseStrict(reply, result));
if (result.isMember("error"))
{
@ -371,6 +370,5 @@ string RPCSession::TransactionData::toJson() const
json["gasprice"] = gasPrice;
json["value"] = value;
json["data"] = data;
return Json::FastWriter().write(json);
return jsonCompactPrint(json);
}

6
test/fuzzer.cpp
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@ -22,7 +22,7 @@
#include <libevmasm/ConstantOptimiser.h>
#include <libsolc/libsolc.h>
#include <json/json.h>
#include <libdevcore/JSON.h>
#include <boost/program_options.hpp>
@ -101,7 +101,7 @@ void testStandardCompiler()
string input = readInput();
string outputString(compileStandard(input.c_str(), NULL));
Json::Value output;
if (!Json::Reader().parse(outputString, output))
if (!jsonParseStrict(outputString, output))
{
cout << "Compiler produced invalid JSON output." << endl;
abort();
@ -129,7 +129,7 @@ void testCompiler(bool optimize)
string outputString(compileJSON(input.c_str(), optimize));
Json::Value outputJson;
if (!Json::Reader().parse(outputString, outputJson))
if (!jsonParseStrict(outputString, outputJson))
{
cout << "Compiler produced invalid JSON output." << endl;
abort();

151
test/libdevcore/JSON.cpp Normal file
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@ -0,0 +1,151 @@
/*
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/>.
*/
/**
* @date 2018
* Unit tests for JSON.h.
*/
#include <libdevcore/JSON.h>
#include "../TestHelper.h"
using namespace std;
namespace dev
{
namespace test
{
BOOST_AUTO_TEST_SUITE(JsonTest)
BOOST_AUTO_TEST_CASE(json_pretty_print)
{
Json::Value json;
Json::Value jsonChild;
jsonChild["3.1"] = "3.1";
jsonChild["3.2"] = 2;
json["1"] = 1;
json["2"] = "2";
json["3"] = jsonChild;
BOOST_CHECK(
"{\n"
" \"1\" : 1,\n"
" \"2\" : \"2\",\n"
" \"3\" : \n"
" {\n"
" \"3.1\" : \"3.1\",\n"
" \"3.2\" : 2\n"
" }\n"
"}" == jsonPrettyPrint(json));
}
BOOST_AUTO_TEST_CASE(json_compact_print)
{
Json::Value json;
Json::Value jsonChild;
jsonChild["3.1"] = "3.1";
jsonChild["3.2"] = 2;
json["1"] = 1;
json["2"] = "2";
json["3"] = jsonChild;
BOOST_CHECK("{\"1\":1,\"2\":\"2\",\"3\":{\"3.1\":\"3.1\",\"3.2\":2}}" == jsonCompactPrint(json));
}
BOOST_AUTO_TEST_CASE(parse_json_not_strict)
{
Json::Value json;
std::string errors;
// just parse a valid json input
BOOST_CHECK(jsonParse("{\"1\":1,\"2\":\"2\",\"3\":{\"3.1\":\"3.1\",\"3.2\":2}}", json, &errors));
BOOST_CHECK(json["1"] == 1);
BOOST_CHECK(json["2"] == "2");
BOOST_CHECK(json["3"]["3.1"] == "3.1");
BOOST_CHECK(json["3"]["3.2"] == 2);
// trailing garbage is allowed here
BOOST_CHECK(jsonParse("{\"1\":2,\"2\":\"2\",\"3\":{\"3.1\":\"3.1\",\"3.2\":3}}}}}}}}}}", json, &errors));
BOOST_CHECK(json["1"] == 2);
BOOST_CHECK(json["2"] == "2");
BOOST_CHECK(json["3"]["3.1"] == "3.1");
BOOST_CHECK(json["3"]["3.2"] == 3);
// comments are allowed
BOOST_CHECK(jsonParse(
"{\"1\":3, // awesome comment\n\"2\":\"2\",\"3\":{\"3.1\":\"3.1\",\"3.2\":4}}", json, &errors
));
BOOST_CHECK(json["1"] == 3);
BOOST_CHECK(json["2"] == "2");
BOOST_CHECK(json["3"]["3.1"] == "3.1");
BOOST_CHECK(json["3"]["3.2"] == 4);
// root element other than object or array is allowed
BOOST_CHECK(jsonParse("[]", json, &errors));
BOOST_CHECK(jsonParse("{}", json, &errors));
BOOST_CHECK(jsonParse("1", json, &errors));
BOOST_CHECK(json == 1);
BOOST_CHECK(jsonParse("\"hello\"", json, &errors));
BOOST_CHECK(json == "hello");
// non-UTF-8 escapes allowed
BOOST_CHECK(jsonParse("[ \"\x80\xec\x80\" ]", json, &errors));
BOOST_CHECK(json[0] == "\x80\xec\x80");
}
BOOST_AUTO_TEST_CASE(parse_json_strict)
{
Json::Value json;
std::string errors;
// just parse a valid json input
BOOST_CHECK(jsonParseStrict("{\"1\":1,\"2\":\"2\",\"3\":{\"3.1\":\"3.1\",\"3.2\":2}}", json, &errors));
BOOST_CHECK(json["1"] == 1);
BOOST_CHECK(json["2"] == "2");
BOOST_CHECK(json["3"]["3.1"] == "3.1");
BOOST_CHECK(json["3"]["3.2"] == 2);
// trailing garbage is not allowed in strict-mode
BOOST_CHECK(!jsonParseStrict("{\"1\":2,\"2\":\"2\",\"3\":{\"3.1\":\"3.1\",\"3.2\":3}}}}}}}}}}", json, &errors));
// comments are allowed in strict-mode? - that's strange...
BOOST_CHECK(jsonParseStrict(
"{\"1\":3, // awesome comment\n\"2\":\"2\",\"3\":{\"3.1\":\"3.1\",\"3.2\":5}}", json, &errors
));
BOOST_CHECK(json["1"] == 3);
BOOST_CHECK(json["2"] == "2");
BOOST_CHECK(json["3"]["3.1"] == "3.1");
BOOST_CHECK(json["3"]["3.2"] == 5);
// root element can only be object or array
BOOST_CHECK(jsonParseStrict("[]", json, &errors));
BOOST_CHECK(jsonParseStrict("{}", json, &errors));
BOOST_CHECK(!jsonParseStrict("1", json, &errors));
BOOST_CHECK(!jsonParseStrict("\"hello\"", json, &errors));
// non-UTF-8 escapes allowed??
BOOST_CHECK(jsonParseStrict("[ \"\x80\xec\x80\" ]", json, &errors));
BOOST_CHECK(json[0] == "\x80\xec\x80");
}
BOOST_AUTO_TEST_SUITE_END()
}
}

6
test/libsolidity/JSONCompiler.cpp
View File

@ -44,7 +44,7 @@ Json::Value compileSingle(string const& _input)
{
string output(compileJSON(_input.c_str(), dev::test::Options::get().optimize));
Json::Value ret;
BOOST_REQUIRE(Json::Reader().parse(output, ret, false));
BOOST_REQUIRE(jsonParseStrict(output, ret));
return ret;
}
@ -56,7 +56,7 @@ Json::Value compileMulti(string const& _input, bool _callback)
compileJSONMulti(_input.c_str(), dev::test::Options::get().optimize)
);
Json::Value ret;
BOOST_REQUIRE(Json::Reader().parse(output, ret, false));
BOOST_REQUIRE(jsonParseStrict(output, ret));
return ret;
}
@ -64,7 +64,7 @@ Json::Value compile(string const& _input)
{
string output(compileStandard(_input.c_str(), NULL));
Json::Value ret;
BOOST_REQUIRE(Json::Reader().parse(output, ret, false));
BOOST_REQUIRE(jsonParseStrict(output, ret));
return ret;
}

5
test/libsolidity/Metadata.cpp
View File

@ -23,6 +23,7 @@
#include "../TestHelper.h"
#include <libsolidity/interface/CompilerStack.h>
#include <libdevcore/SwarmHash.h>
#include <libdevcore/JSON.h>
namespace dev
{
@ -111,7 +112,7 @@ BOOST_AUTO_TEST_CASE(metadata_relevant_sources)
std::string const& serialisedMetadata = compilerStack.metadata("A");
BOOST_CHECK(dev::test::isValidMetadata(serialisedMetadata));
Json::Value metadata;
BOOST_REQUIRE(Json::Reader().parse(serialisedMetadata, metadata, false));
BOOST_REQUIRE(jsonParseStrict(serialisedMetadata, metadata));
BOOST_CHECK_EQUAL(metadata["sources"].size(), 1);
BOOST_CHECK(metadata["sources"].isMember("A"));
@ -149,7 +150,7 @@ BOOST_AUTO_TEST_CASE(metadata_relevant_sources_imports)
std::string const& serialisedMetadata = compilerStack.metadata("C");
BOOST_CHECK(dev::test::isValidMetadata(serialisedMetadata));
Json::Value metadata;
BOOST_REQUIRE(Json::Reader().parse(serialisedMetadata, metadata, false));
BOOST_REQUIRE(jsonParseStrict(serialisedMetadata, metadata));
BOOST_CHECK_EQUAL(metadata["sources"].size(), 3);
BOOST_CHECK(metadata["sources"].isMember("A"));

5
test/libsolidity/SolidityABIJSON.cpp
View File

@ -26,7 +26,7 @@
#include <libdevcore/Exceptions.h>
#include <libdevcore/SwarmHash.h>
#include <json/json.h>
#include <libdevcore/JSON.h>
namespace dev
{
@ -48,7 +48,7 @@ public:
Json::Value generatedInterface = m_compilerStack.contractABI(m_compilerStack.lastContractName());
Json::Value expectedInterface;
BOOST_REQUIRE(m_reader.parse(_expectedInterfaceString, expectedInterface));
BOOST_REQUIRE(jsonParseStrict(_expectedInterfaceString, expectedInterface));
BOOST_CHECK_MESSAGE(
expectedInterface == generatedInterface,
"Expected:\n" << expectedInterface.toStyledString() <<
@ -58,7 +58,6 @@ public:
protected:
CompilerStack m_compilerStack;
Json::Reader m_reader;
};
BOOST_FIXTURE_TEST_SUITE(SolidityABIJSON, JSONInterfaceChecker)

5
test/libsolidity/SolidityNatspecJSON.cpp
View File

@ -22,7 +22,7 @@
#include "../TestHelper.h"
#include <string>
#include <json/json.h>
#include <libdevcore/JSON.h>
#include <libsolidity/interface/CompilerStack.h>
#include <libsolidity/interface/Exceptions.h>
#include <libdevcore/Exceptions.h>
@ -55,7 +55,7 @@ public:
else
generatedDocumentation = m_compilerStack.natspecDev(m_compilerStack.lastContractName());
Json::Value expectedDocumentation;
m_reader.parse(_expectedDocumentationString, expectedDocumentation);
jsonParseStrict(_expectedDocumentationString, expectedDocumentation);
BOOST_CHECK_MESSAGE(
expectedDocumentation == generatedDocumentation,
"Expected:\n" << expectedDocumentation.toStyledString() <<
@ -73,7 +73,6 @@ public:
private:
CompilerStack m_compilerStack;
Json::Reader m_reader;
};
BOOST_FIXTURE_TEST_SUITE(SolidityNatspecJSON, DocumentationChecker)

27
test/libsolidity/StandardCompiler.cpp
View File

@ -89,7 +89,7 @@ Json::Value compile(string const& _input)
StandardCompiler compiler;
string output = compiler.compile(_input);
Json::Value ret;
BOOST_REQUIRE(Json::Reader().parse(output, ret, false));
BOOST_REQUIRE(jsonParseStrict(output, ret));
return ret;
}
@ -110,11 +110,11 @@ BOOST_AUTO_TEST_CASE(assume_object_input)
/// Use the string interface of StandardCompiler to trigger these
result = compile("");
BOOST_CHECK(containsError(result, "JSONError", "* Line 1, Column 1\n Syntax error: value, object or array expected.\n"));
BOOST_CHECK(containsError(result, "JSONError", "* Line 1, Column 1\n Syntax error: value, object or array expected.\n* Line 1, Column 1\n A valid JSON document must be either an array or an object value.\n"));
result = compile("invalid");
BOOST_CHECK(containsError(result, "JSONError", "* Line 1, Column 1\n Syntax error: value, object or array expected.\n"));
BOOST_CHECK(containsError(result, "JSONError", "* Line 1, Column 1\n Syntax error: value, object or array expected.\n* Line 1, Column 2\n Extra non-whitespace after JSON value.\n"));
result = compile("\"invalid\"");
BOOST_CHECK(containsError(result, "JSONError", "Input is not a JSON object."));
BOOST_CHECK(containsError(result, "JSONError", "* Line 1, Column 1\n A valid JSON document must be either an array or an object value.\n"));
BOOST_CHECK(!containsError(result, "JSONError", "* Line 1, Column 1\n Syntax error: value, object or array expected.\n"));
result = compile("{}");
BOOST_CHECK(!containsError(result, "JSONError", "* Line 1, Column 1\n Syntax error: value, object or array expected.\n"));
@ -190,6 +190,25 @@ BOOST_AUTO_TEST_CASE(sources_is_array)
BOOST_CHECK(containsError(result, "JSONError", "\"sources\" is not a JSON object."));
}
BOOST_AUTO_TEST_CASE(unexpected_trailing_test)
{
char const* input = R"(
{
"language": "Solidity",
"sources": {
"A": {
"content": "contract A { function f() {} }"
}
}
}
}
}
)";
Json::Value result = compile(input);
BOOST_CHECK(containsError(result, "JSONError", "* Line 10, Column 2\n Extra non-whitespace after JSON value.\n"));
}
BOOST_AUTO_TEST_CASE(smoke_test)
{
char const* input = R"(