Hello,I want porting this componet to RTOS，but this source code hava too much stdio/FILE and so on func,
what can I do?

The current lexer for RegExp literals is pretty basic:

https://github.com/ndreynolds/flathead/blob/master/src/lexer.l#L116-119

It doesn't allow any spaces or forward slashes, but those should be allowed. It needs to be expanded to support the full grammar as given in the spec.

• One of the issues is differentiating RegExp literals from expressions with the division operator (see this StackOverflow post).
• Flex's start conditions might be a good fit for this.
• The lexer doesn't need to verify that the RegExp is actually valid, we can let PCRE handle that when we attempt to compile it.

Add the body to func_new in Function.c and new tests to test_function_global.js according to the spec. For example:

(new Function('x', 'y', 'return x * y'))(2, 2)
// 4

The trouble with this one is parsing the function body that's given as the last argument. It's going to need to get routed through Flex and Bison. There's a proof-of-concept load function that treads in this water, but it needs some more work itself.

Hi team,

I found a segmentation fault error at src/eval.c:374( at function assign's first line).

Reproduction:

$ /path/to/flathead/bin/flat trigger.js

The content of trigger.js is :

var a =0[1,2];

make test
bin/test --dir test -x bin/flat
/usr/bin/env: node: 没有那个文件或目录
make: *** [test] 错误 127

Add support for RegExp separators to str_proto_split in String.c and new tests in test_string_global.js.

Currently, only a string can be given as the separator, but the spec also allows a RegExp, e.g.

"Hello 1 word. Sentence number 2.".split(/(\d)/)
// ["Hello ", "1", " word. Sentence number ", "2", "."]

var result = [];
for (var i=0; i<2; i++) {
    (function () {
        var copy = i;
        var func = function () {
            return copy;
        };
        result.push(func);
    }());
}

console.log(result[0]());

Flat will report Reference error while node engine does not:

$ ./flathead/bin/flat ./test.js 
ReferenceError: copy is not defined
  at ./test.js:6:10
  at (anonymous function) in ./test.js:12:22
$ node ./test.js 
0

for.js as below:
function test(times) {
var i;
for (i=0; i<times; i++) {
print("times " + i);
}
}

test(1000);

flat for.js

times 0
times 1
.....
times 857
// not output 858 to 999

Implement the try and throw statements (along with catch and finally) as specified in ES5.1 12.13 and 12.14.

The productions for these statements have already been added to the Bison grammar:

https://github.com/ndreynolds/flathead/blob/master/src/grammar.y#L445-467

To get try, throw and friends working, the existing state trace will probably need to be expanded to store pointers to evaluation states. We'll need to add new cases to the switch statement in eval.c and likely a few new functions below those for the implementation.

Add an implementation for String.prototype.replace to String.c and tests to test_string_global.js following the spec here.