ecmascript 0.2.0

A rust implementation of an ECMAScript parser
{
    "type": "Program",
    "body": [
        {
            "type": "FunctionDeclaration",
            "id": {
                "type": "Identifier",
                "name": "arguments",
                "range": [
                    9,
                    18
                ],
                "loc": {
                    "start": {
                        "line": 1,
                        "column": 9
                    },
                    "end": {
                        "line": 1,
                        "column": 18
                    }
                }
            },
            "params": [],
            "body": {
                "type": "BlockStatement",
                "body": [],
                "range": [
                    21,
                    24
                ],
                "loc": {
                    "start": {
                        "line": 1,
                        "column": 21
                    },
                    "end": {
                        "line": 1,
                        "column": 24
                    }
                }
            },
            "generator": false,
            "expression": false,
            "async": false,
            "range": [
                0,
                24
            ],
            "loc": {
                "start": {
                    "line": 1,
                    "column": 0
                },
                "end": {
                    "line": 1,
                    "column": 24
                }
            }
        }
    ],
    "sourceType": "script",
    "tokens": [
        {
            "type": "Keyword",
            "value": "function",
            "range": [
                0,
                8
            ],
            "loc": {
                "start": {
                    "line": 1,
                    "column": 0
                },
                "end": {
                    "line": 1,
                    "column": 8
                }
            }
        },
        {
            "type": "Identifier",
            "value": "arguments",
            "range": [
                9,
                18
            ],
            "loc": {
                "start": {
                    "line": 1,
                    "column": 9
                },
                "end": {
                    "line": 1,
                    "column": 18
                }
            }
        },
        {
            "type": "Punctuator",
            "value": "(",
            "range": [
                18,
                19
            ],
            "loc": {
                "start": {
                    "line": 1,
                    "column": 18
                },
                "end": {
                    "line": 1,
                    "column": 19
                }
            }
        },
        {
            "type": "Punctuator",
            "value": ")",
            "range": [
                19,
                20
            ],
            "loc": {
                "start": {
                    "line": 1,
                    "column": 19
                },
                "end": {
                    "line": 1,
                    "column": 20
                }
            }
        },
        {
            "type": "Punctuator",
            "value": "{",
            "range": [
                21,
                22
            ],
            "loc": {
                "start": {
                    "line": 1,
                    "column": 21
                },
                "end": {
                    "line": 1,
                    "column": 22
                }
            }
        },
        {
            "type": "Punctuator",
            "value": "}",
            "range": [
                23,
                24
            ],
            "loc": {
                "start": {
                    "line": 1,
                    "column": 23
                },
                "end": {
                    "line": 1,
                    "column": 24
                }
            }
        }
    ],
    "range": [
        0,
        24
    ],
    "loc": {
        "start": {
            "line": 1,
            "column": 0
        },
        "end": {
            "line": 1,
            "column": 24
        }
    }
}