# Copyright 2021 Mattia Giambirtone
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

## Top-level module for nimkalc

import nimkalc/parsing/parser
import nimkalc/objects/ast
import nimkalc/parsing/lexer
import nimkalc/objects/token
import nimkalc/objects/error


export lexer, parser, error, token, ast


proc eval*(source: string): AstNode =
  ## Evaluates a mathematical expression as a string
  ## and returns a leaf node representing the result
  let l = initLexer()
  let p = initParser()
  let v = initNodeVisitor()
  result = v.eval(p.parse(l.lex(source)))