compromise/src/terms/match/lib/lumpMatch.js

natural language processing in the browser

'use strict';
const fns = require('./paths').fns;

const almostMatch = (reg_str, term) => {
  return fns.startsWith(term.normal, reg_str);
};

// match ['john', 'smith'] regs, when the term is lumped
const lumpMatch = function(term, regs, reg_i) {
  let reg_str = regs[reg_i].normal;
  //is this a partial match? 'tony'& 'tony hawk'
  if (almostMatch(reg_str, term)) {
    //try to grow it
    for (reg_i = reg_i + 1; reg_i < regs.length; reg_i++) {
      reg_str += ' ' + regs[reg_i].normal;
      //is it now perfect?
      if (reg_str === term.normal) {
        return reg_i;
      }
      //is it still almost?
      if (almostMatch(reg_str, term)) {
        continue;
      }
      return null;
    }
  }
  return null;
};

module.exports = lumpMatch;