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# The MIT License (MIT)
#
# Copyright (c) 2007-2017 Einar Lielmanis, Liam Newman, and contributors.
#
# Permission is hereby granted, free of charge, to any person
# obtaining a copy of this software and associated documentation files
# (the "Software"), to deal in the Software without restriction,
# including without limitation the rights to use, copy, modify, merge,
# publish, distribute, sublicense, and/or sell copies of the Software,
# and to permit persons to whom the Software is furnished to do so,
# subject to the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
import re
# Using object instead of string to allow for later expansion of info about each line
class OutputLine:
def __init__(self, parent):
self.__parent = parent
self.__character_count = 0
self.__indent_count = -1
self.__items = []
self.__empty = True
def get_character_count(self):
return self.__character_count
def is_empty(self):
return self.__empty
def set_indent(self, level):
self.__character_count = self.__parent.baseIndentLength + level * self.__parent.indent_length
self.__indent_count = level;
def last(self):
if not self.is_empty():
return self.__items[-1]
else:
return None
def push(self, input):
self.__items.append(input)
self.__character_count += len(input)
self.__empty = False
def pop(self):
item = None
if not self.is_empty():
item = self.__items.pop()
self.__character_count -= len(item)
self.__empty = len(self.__items) == 0
return item
def remove_indent(self):
if self.__indent_count > 0:
self.__indent_count -= 1
self.__character_count -= self.__parent.indent_length
def trim(self):
while self.last() == ' ':
item = self._items.pop()
self.__character_count -= 1
self.__empty = len(self.__items) == 0
def toString(self):
result = ''
if not self.is_empty():
if self.__indent_count >= 0:
result = self.__parent.indent_cache[self.__indent_count]
result += ''.join(self.__items)
return result
class Output:
def __init__(self, indent_string, baseIndentString = ''):
self.indent_string = indent_string
self.baseIndentString = baseIndentString
self.indent_cache = [ baseIndentString ]
self.baseIndentLength = len(baseIndentString)
self.indent_length = len(indent_string)
self.raw = False
self.lines = []
self.previous_line = None
self.current_line = None
self.space_before_token = False
self.add_outputline()
def add_outputline(self):
self.previous_line = self.current_line
self.current_line = OutputLine(self)
self.lines.append(self.current_line)
def get_line_number(self):
return len(self.lines)
def add_new_line(self, force_newline=False):
if len(self.lines) == 1 and self.just_added_newline():
# no newline on start of file
return False
if force_newline or not self.just_added_newline():
if not self.raw:
self.add_outputline()
return True
return False
def get_code(self, end_with_newline, eol):
sweet_code = "\n".join(line.toString() for line in self.lines)
sweet_code = re.sub('[\r\n\t ]+$', '', sweet_code)
if end_with_newline:
sweet_code += '\n'
if not eol == '\n':
sweet_code = sweet_code.replace('\n', eol)
return sweet_code
def set_indent(self, level):
# Never indent your first output indent at the start of the file
if len(self.lines) > 1:
while level >= len(self.indent_cache):
self.indent_cache.append(self.indent_cache[-1] + self.indent_string)
self.current_line.set_indent(level)
return True
self.current_line.set_indent(0)
return False
def add_raw_token(self, token):
for _ in range(token.newlines):
self.add_outputline()
self.current_line.push(token.whitespace_before)
self.current_line.push(token.text)
self.space_before_token = False
def add_token(self, printable_token):
self.add_space_before_token()
self.current_line.push(printable_token)
def add_space_before_token(self):
if self.space_before_token and not self.just_added_newline():
self.current_line.push(' ')
self.space_before_token = False
def trim(self, eat_newlines = False):
self.current_line.trim()
while eat_newlines and len(self.lines) > 1 and self.current_line.is_empty():
self.lines.pop()
self.current_line = self.lines[-1]
self.current_line.trim()
if len(self.lines) > 1:
self.previous_line = self.lines[-2]
else:
self.previous_line = None
def just_added_newline(self):
return self.current_line.is_empty()
def just_added_blankline(self):
if self.just_added_newline():
if len(self.lines) == 1:
return True
line = self.lines[-2]
return line.is_empty()
return False
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