import references = require('references');
import path = require('path');
import fs = require('fs');
import PEG = require('pegjs');
import isAssignableTo = require('./isAssignableTo');
import Types = require('tsd-schema');


// Create a parser for typescript model definitions (using pegjs)
var grammar = fs.readFileSync(path.join(__dirname, './grammar.peg'), 'utf8');
var parser = PEG.buildParser(grammar);


/** Generate a schema corresponding to the declarations in the given typescript file. */
export function parse(filename: string): Types.Schema {
    var tsd = fs.readFileSync(filename, 'utf8');
    var schema = parser.parse(tsd);
    schema.isAssignableTo = isAssignableTo;
    return schema;
}