parser

Instructions

The parser in this directory uses the mgree/libdash posix compliant parser and outputs the AST in JSON format using atdgen.

In order to install, one has to execute make opam-dependencies && make libdash && make. The first command makes libdash and sets up all the ocaml dependencies.

Alternatively, one can install libdash (as explained in its README) and then run make here.

To run the parser, one can run:

./parse_to_json.native <sh file>

The following process was followed to make the parser output the ast to json.

• specify the AST definition in ast_atd.atd.
• ran atdgen -j -j-std ast_atd.atd to produce ast_atd_j.ml.
• copy it to ast_json.ml (removing the char definition).
• also make a small adjustment in the ast.ml, ast.mli files in libdash/ocaml. (?nv)

This procedure is not automated, and in case the AST definition in libdash changes, this process has to be done again.