yorkie / mario_js

simple javascript engine in single C file and single head file.

Mario

very tiny simple js engine in one single c and one single head file "mario_js.c mario_js.h", including bytecode-compiler, VM interpreter. None 3rd libs relied, so can be used on most of embedded systems.

.Demo source.

#include "mario_js.h"
#include <stdio.h>

void debug(const char* s) {
	printf("%s", s);
}

var_t* native_print(vm_t* vm, var_t* env, void* data) {
	node_t* n = var_find(env, "v");
	const char* s = n == NULL ? "" : var_get_str(n->var);
	debug(s);
	return NULL;
}

int main(int argc, char** argv) {
	_debug_func = debug; //for dump variable

	vm_t vm;
	vm_init(&vm);

	//demo: register a native function(mapped to js).
	vm_reg_native(&vm, "", "print(v)", native_print, NULL);
	//demo: register a global variable.
	vm_reg_var(&vm, "", "_HELLO", var_new_str("Hello, world\n"));

	if(vm_load(&vm, "print(this._HELLO); Debug.dump(this);")) {
		vm_run(&vm);
	}

	vm_close(&vm);
	return 0;
}