No spec as yet - more a speculative prototype.
The patch creates a subdir 'ast-test' in the V8 dir which contain a
range of JS source examples covering the ECMAScript grammar. These
examples (and any other JS scripts) can be parsed to JsonML using the
ast-parse.sh shell script (which calls JSON.AST.Parse()):
./ast-parse.sh ast-test/forin.js
The project is an attempt to use the (already pretty generic) JsonML
output feature offered by the V8 deug shell as a starting point for a
generic standarized JSON AST format. Thus, output from from an
unpatched V8 debug shell can also give a good feel of what the JsonML
looks like. (Note: this output is incomplete - it prints only the node
name for some AST constructs):
./shell_g file.js --print-json-ast
It would be useful to get a feel whether the general idea is a starter
- or non-starter. Maybe it merits a wiki straw man entry.
> more ast-test/forin.js
x = [4,5,6];
for (i in x) print(x[i]);
> ./ast-parse.sh ast-test/forin.js
["Program",
["ExprStmt",
["Assign",
{"op":"="},
["Id",
{"name":"x"}
],
["ArrayLiteral",
["Literal",
{"handle":4}
],
["Literal",
{"handle":5}
],
["Literal",
{"handle":6}
]
]
]
],
["ForIn",
["Id",
{"name":"i"}
],
["Id",
{"name":"x"}
],
["ExprStmt",
["Call",
["Id",
{"name":"print"}
],
["Property",
{"type":"NORMAL"},
["Id",
{"name":"x"}
],
["Id",
{"name":"i"}
]
]
]
]
]
]
> I am eager to see such a proposal. However, on your pages, I could not
> find any documentation, other than small examples, showing what your
> proposed encoding of JS ASTs in JSON is. Are you writing a draft spec?
>
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