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#include <stdio.h>
#include <string>
#include <emscripten.h>
#include <cassert>
#include <wchar.h>
// This code tests that utf32-encoded std::wstrings can be marshalled between C++ and JS.
int main() {
std::wstring wstr = L"abc\u2603\u20AC123"; // U+2603 is snowman, U+20AC is the Euro sign.
const int len = (wstr.length()+1)*4;
char *memory = new char[len];
asm("var str = Module.utf32_to_jsstring(%0);"
"Module.print(str);"
"Module.jsstring_to_utf32(str, %1);"
:
: "r"(wstr.c_str()), "r"(memory));
// Compare memory to confirm that the string is intact after taking a route through JS side.
const char *srcPtr = reinterpret_cast<const char *>(wstr.c_str());
for(int i = 0; i < len; ++i) {
assert(memory[i] == srcPtr[i]);
}
printf("OK.\n");
delete[] memory;
}
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