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Fixed [-1:-1] unexpected end of stream of schema_compiler in LLVM18 OSX #3

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Fixed [-1:-1] unexpected end of stream of schema_compiler in LLVM18 OSX #3

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15 changes: 13 additions & 2 deletions tool/schema_compiler/src/Main.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -89,8 +89,19 @@ int main(int argc, char **argv)
std::ifstream stream(file);
if (not stream.is_open())
return 1;

auto tokens = minecpp::tool::schema_compiler::lex_input(stream);
/**
* Internal parser uses std::basic_istream<CharT,Traits>::readsome to read from the stream
* which is highly implementation specific and was returning empty on LLVM18 in OSX.
*
* Therefore we create a stringstream to read from the file into memory, where readsome()
* function will then return non-empty, as the contents are in memory.
*
* https://en.cppreference.com/w/cpp/io/basic_istream/readsome
*/
std::stringstream in_memory_stream;
in_memory_stream << stream.rdbuf();
in_memory_stream.seekg(0);
auto tokens = minecpp::tool::schema_compiler::lex_input(in_memory_stream);
minecpp::tool::schema_compiler::Parser parser(tokens);

try {
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