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# -*- coding: utf-8 -*-
# Copyright JS Foundation and other contributors, https://js.foundation/
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
from __future__ import absolute_import, unicode_literals
from .comment_handler import CommentHandler
from .error_handler import Error
from .jsx_parser import JSXParser
from .jsx_syntax import JSXSyntax
from .objects import Array, toDict
from .parser import Parser
from .syntax import Syntax
from .tokenizer import Tokenizer
from .visitor import NodeVisitor
from . import nodes
from . import jsx_nodes
__all__ = ['Syntax', 'JSXSyntax', 'Error', 'NodeVisitor', 'nodes', 'jsx_nodes',
'parse', 'parseModule', 'parseScript', 'tokenize', 'toDict']
def parse(code, options=None, delegate=None, **kwargs):
options = {} if options is None else options.copy()
options.update(kwargs)
# ESNext presset:
if options.get('esnext', False):
options['jsx'] = True
options['classProperties'] = True
commentHandler = None
def proxyDelegate(node, metadata):
if delegate:
new_node = delegate(node, metadata)
if new_node is not None:
node = new_node
if commentHandler:
commentHandler.visit(node, metadata)
return node
parserDelegate = None if delegate is None else proxyDelegate
collectComment = options.get('comment', False)
attachComment = options.get('attachComment', False)
if collectComment or attachComment:
commentHandler = CommentHandler()
commentHandler.attach = attachComment
options['comment'] = True
parserDelegate = proxyDelegate
isModule = options.get('sourceType', 'script') == 'module'
if options.get('jsx', False):
parser = JSXParser(code, options=options, delegate=parserDelegate)
else:
parser = Parser(code, options=options, delegate=parserDelegate)
ast = parser.parseModule() if isModule else parser.parseScript()
if collectComment and commentHandler:
ast.comments = commentHandler.comments
if parser.config.tokens:
ast.tokens = parser.tokens
if parser.config.tolerant:
ast.errors = parser.errorHandler.errors
return ast
def parseModule(code, options=None, delegate=None, **kwargs):
kwargs['sourceType'] = 'module'
return parse(code, options, delegate, **kwargs)
def parseScript(code, options=None, delegate=None, **kwargs):
kwargs['sourceType'] = 'script'
return parse(code, options, delegate, **kwargs)
def tokenize(code, options=None, delegate=None, **kwargs):
options = {} if options is None else options.copy()
options.update(kwargs)
tokenizer = Tokenizer(code, options)
tokens = Array()
try:
while True:
token = tokenizer.getNextToken()
if not token:
break
if delegate:
token = delegate(token)
tokens.append(token)
except Error as e:
tokenizer.errorHandler.tolerate(e)
if tokenizer.errorHandler.tolerant:
tokens.errors = tokenizer.errors()
return tokens
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