c-tokenizer

tokenize C/C++ source code

example

var tokenize = require('c-tokenizer')
var t = tokenize(function (src, token) {
  console.log(token.type + ' => ' + JSON.stringify(src))
})
process.stdin.pipe(t)

For the input file main.c:

#include "stdio.h"
#include "stdlib.h"

int main(int argc, char **argv) {
  printf("%d\n", foo(atoi(argv[1])));
  return 0;
}

output:

$ node example/tokens.js < example/main.c
directive => "#include"
whitespace => " "
quote => "\"stdio.h\""
whitespace => "\n"
directive => "#include"
whitespace => " "
quote => "\"stdlib.h\""
whitespace => "\n\n"
identifier => "int"
whitespace => " "
identifier => "main"
open paren => "("
identifier => "int"
whitespace => " "
identifier => "argc"
operator => ","
whitespace => " "
identifier => "char"
whitespace => " "
operator => "**"
identifier => "argv"
close paren => ")"
whitespace => " "
open curly => "{"
whitespace => "\n    "
identifier => "printf"
open paren => "("
quote => "\"%d\\n\""
operator => ","
whitespace => " "
identifier => "foo"
open paren => "("
identifier => "atoi"
open paren => "("
identifier => "argv"
open square => "["
number => "1"
close square => "]"
close paren => ")"
close paren => ")"
close paren => ")"
operator => ";"
whitespace => "\n    "
identifier => "return"
whitespace => " "
number => "0"
operator => ";"
whitespace => "\n"
close curly => "}"
whitespace => "\n"

or as an array instead of a stream:

var tokenize = require('c-tokenizer/array')
var src = process.argv[2]
var tokens = tokenize(src)
tokesn.forEach(function (t) {
  console.log(JSON.stringify(t))
})

api

var tokenize = require('c-tokenizer')
var tokenizeArray = require('c-tokenizer/array')

var t = tokenize(cb)

Return a new tokenize through stream with C/C++ syntax rules loaded into it.

Each parsed token will fire the cb(src, token) callback.

Each token has:

• token.type - string type
• token.source - original source string

t.addRule(regex, name)

Add additional rules as regex with a name.

var tokens tokenizeArray(src)

Return an array of tokens for the c source string src.

Each token has:

• token.type - string type
• token.source - original source string

install

With npm do:

npm install c-tokenizer

license

MIT