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/*

* TinyJS

*

* A single-file Javascript-alike engine

*

* Authored By Gordon Williams <gw@pur3.co.uk>

*

* Copyright (C) 2009 Pur3 Ltd

*

* This library is free software; you can redistribute it and/or

* modify it under the terms of the GNU Lesser General Public

* License as published by the Free Software Foundation; either

* version 2 of the License, or (at your option) any later version.

*

* This library 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

* Lesser General Public License for more details.

*

* You should have received a copy of the GNU Lesser General Public

* License along with this library; if not, write to the

* Free Software Foundation, Inc., 59 Temple Place - Suite 330,

* Boston, MA 02111-1307, USA.

*/

/*

* This is a simple program showing how to use TinyJS

*/

#include <assert.h>

#include <stdio.h>

#include "TinyJS.h"

#include "TinyJS_Functions.h"

//const char *code = "var a = 5; if (a==5) a=4; else a=3;";

//const char *code = "{ var a = 4; var b = 1; while (a>0) { b = b * 2; a = a - 1; } var c = 5; }";

//const char *code = "{ var b = 1; for (var i=0;i<4;i=i+1) b = b * 2; }";

const char *code = "function myfunc(x, y) { return x + y; } var a = myfunc(1,2); print(a);";

void js_print(CScriptVar *v, void *userdata) {

printf("> %s\n", v->getParameter("text")->getString().c_str());

}

void js_dump(CScriptVar *v, void *userdata) {

CTinyJS *js = (CTinyJS*)userdata;

js->root->trace("> ");

}

int main(int argc, char **argv)

{

CTinyJS js;

/* add the functions from TinyJS_Functions.cpp */

registerFunctions(&js);

/* Add a native function */

js.addNative("function print(text)", &js_print, 0);

js.addNative("function dump()", &js_dump, &js);

/* Execute out bit of code - we could call 'evaluate' here if

we wanted something returned */

try {

js.execute("var lets_quit = 0; function quit() { lets_quit = 1; }");

js.execute("print(\"Interactive mode... Type quit(); to exit, or print(...); to print something, or dump() to dump the symbol table!\");");

} catch (CScriptException *e) {

printf("ERROR: %s\n", e->text.c_str());

}

while (js.evaluate("lets_quit") == "0") {

char buffer[2048];

fgets ( buffer, sizeof(buffer), stdin );

try {

js.execute(buffer);

} catch (CScriptException *e) {

printf("ERROR: %s\n", e->text.c_str());

}

}

return 0;

}