function emit($w = 0)
{
// so we put catch() and finally blocks in functions to be able to pick if/when to evaluate them
// it's not clear why try is in a function too at this point. consistency? yeah, weak.
js_source::addFunctionDefinition($this);
$id = $this->catch != NULL ? $this->catch->id : '';
$this->body = $this->body->emit(1);
if ($this->catch != NULL) {
$this->catch = $this->catch->emit(1);
}
if ($this->final != NULL) {
$this->final = $this->final->emit(1);
}
$ret = jsc::gensym("jsrt_ret");
$tmp = jsc::gensym("jsrt_tmp");
// try is on its own to work around a crash in my version of php5
// apparently, php exceptions inside func_user_call()ed code are not all that stable just yet.
// XXX note: the crash can still occur. still not entirely sure how it happens.
// it feels like exceptions thrown from call_user_func-ed code corrupt some php internals, which
// result in a possible crash at a later point in the program flow.
$o = "\${$tmp} = " . $this->id_try . "();\n";
$o .= "\${$ret} = jsrt::trycatch(\${$tmp}, ";
$o .= ($this->catch != NULL ? "'" . $this->id_catch . "'" : "NULL") . ", ";
$o .= $this->final != NULL ? "'" . $this->id_finally . "'" : "NULL";
$o .= ($this->catch != NULL ? ", '" . $id . "'" : "") . ");\n";
$o .= "if (\${$ret} != NULL) return \${$ret};\n";
return $o;
}
