soasme / toast

Convert source code TO AST

Toast

Convert source code TO AST.

Getting Started

Build:

$ gcc src/main.c src/peppapeg.c -o toast

Copy "toast" into your $PATH.

Usage

Command toast has two arguments: lang and path.

• Argument lang supports json.
• Argument path is the path to the source file to parse.

$ toast
usage: toast <lang> <path>

Example:

$ cat ./tests/json/y_number_simple_int.json
[123]

$ toast json ./tests/json/y_number_simple_int.json
[{"slice":[0,5],"type":"array","children":[{"slice":[1,4],"type":"number"}]}]

The output tree is in json format. It has fields slice, type and optional children.

• Slice indicates the start and end position in the file that the tree node covers.
• Type indicates which rule applies to the tree node.
• If the tree node is a non-terminal, then it will have a list of children nodes.

In the above example, type:array slice:[0,5] means the root tree node is an array and covers the full text. It has one single child - type:number slice:[1,4], e.g. 123.