src/javascript/jsc/headergen/sizegen.cpp


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#include <iostream>
#include <fstream>
#include <ctime> 
using namespace std;

#include "headers-cpp.h"

int main() {
    time_t rawtime;
    struct tm * timeinfo;
    char buf [80];

    time (&rawtime);
    timeinfo = localtime (&rawtime);

    strftime (buf,80,"%Y-%m-%d %H:%M:%s",timeinfo);

    cout <<  "// Auto-generated by src/javascript/jsc/headergen/sizegen.cpp at " << buf << ".\n";
    cout <<  "// These are the byte sizes for the different object types with bindings in JavaScriptCore.\n";
    cout <<  "// This allows us to safely return stack allocated C++ types to Zig.\n";
    cout <<  "// It is only safe to do this when these sizes are correct.\n";
    cout <<  "// That means:\n";
    cout <<  "// 1. We can't dynamically link JavaScriptCore\n";
    cout <<  "// 2. It's important that this is run whenever JavaScriptCore is updated or the bindings on the Zig side change.\n";
    cout <<  "//    Failure to do so will lead to undefined behavior and probably some frustrated people.\n";
    cout <<  "// --- Regenerate this: --- \n";
    cout <<  "// 1. \"make jsc-bindings-headers\"\n";
    cout <<  "// 2. \"makpe sizegen\"\n";
    cout <<  "// 3. \"make jsc-bindings-headers\"\n";
    cout <<  "// ------------------------\n";
    cout <<  "// You can verify the numbers written in this file at runtime via the `extern`d types\n";
    cout <<  "// Run \"jsc-bindings-headers\" twice because it uses these values in the output. That's how all the bJSC__.* types are created - from these values. \n";
    int i = 0;
    int len = sizeof(sizes)/sizeof(sizes[0]);
    for (i = 0; i <  len ; i++) {
        cout <<  "pub const " << names[i] << " = " << sizes[i] << ";\n";
        cout <<  "pub const " << names[i]  << "_align = " << aligns[i] << ";\n";
    }
	
	return 0;
}