import logging
from collections import defaultdict
import re
import calculator.definitions as definitions

class ParseError(Exception):
    def __init__(self, eExpr, ePos):
        self.expr = eExpr
        self.pos = ePos
    def __str__(self):
        msg = 'unknown token at ' + str(self.pos) + ': \n'
        msg += self.expr + '\n'
        msg += ''.join([' ' for i in xrange(self.pos - 1)]) + '---'
        return msg

class Parser(object):
    def __init__(self):
        self.numberM = definitions.Identifier(
            type = 'num', val = re.compile(definitions._number.regex))
        
        self.functionM = definitions.Identifier(type = 'func', val = re.compile( '|'.join( 
            [re.escape(func) for func in sorted(definitions._functions, key=lambda func: len(func), reverse=True) ] )))

        self.operatorM = definitions.Identifier(type = 'op', val = re.compile( '|'.join( 
            [re.escape(op) for op in sorted(definitions._operators, key=lambda func: len(func), reverse=True)] )))
        
        self.lBracketM = definitions.Identifier(type = 'lb', val = re.compile('\('))
        self.rBracketM = definitions.Identifier(type = 'rb', val = re.compile('\)'))

        self.matchers = (self.numberM, self.functionM, self.operatorM, self.lBracketM, self.rBracketM)


    def parse(self, iExpr):
        '''
        @iExpr -- string to parse
        @parsedExpr -- output parsed expression
        '''

        logging.info('Parser started.')
        logging.debug('Parser IO:')
        logging.debug('Input: ' + iExpr)

        parsedExpr = []
        curPos = 0

        while curPos < len(iExpr):
            for matcher in self.matchers:
                result = matcher.val.match(iExpr, curPos)
                if result:
                    if result.re == self.numberM.val:
                        parsedExpr.append( \
                            definitions.Identifier(type = matcher.type, val = float(result.group(0))))
                    else:
                        parsedExpr.append( \
                            definitions.Identifier(type = matcher.type, val = result.group(0)))
                    curPos = result.end()
                    break
                elif matcher == self.matchers[-1]:
                    # can't find suitable matcher
                    logging.debug('Output: ' + ', '.join([ str(ident.val) for ident in parsedExpr ]) + '.')
                    raise ParseError(iExpr, curPos)
                    


        logging.debug('Output: ' + ', '.join([ str(ident.val) for ident in parsedExpr ]) + '.')

        parseStat = defaultdict(int)
        for ident in parsedExpr:
            parseStat[ident.type] += 1

        statMsg = 'Parser statistics: \n'
        statMsg += '- ' + str(parseStat['op']) + ' operators,\n'
        statMsg += '- ' + str(parseStat['func']) + ' functions,\n'
        statMsg += '- ' + str(parseStat['lb']) + ' opening brackets,\n'
        statMsg += '- ' + str(parseStat['rb']) + ' closing brackets.'
        logging.info(statMsg)

        return parsedExpr

f801dac991be9ce9faa251a8b9d70ef4a7d8d069
<mask token>


class ParseError(Exception):
    <mask token>
    <mask token>


class Parser(object):

    def __init__(self):
        self.numberM = definitions.Identifier(type='num', val=re.compile(
            definitions._number.regex))
        self.functionM = definitions.Identifier(type='func', val=re.compile
            ('|'.join([re.escape(func) for func in sorted(definitions.
            _functions, key=lambda func: len(func), reverse=True)])))
        self.operatorM = definitions.Identifier(type='op', val=re.compile(
            '|'.join([re.escape(op) for op in sorted(definitions._operators,
            key=lambda func: len(func), reverse=True)])))
        self.lBracketM = definitions.Identifier(type='lb', val=re.compile(
            '\\('))
        self.rBracketM = definitions.Identifier(type='rb', val=re.compile(
            '\\)'))
        self.matchers = (self.numberM, self.functionM, self.operatorM, self
            .lBracketM, self.rBracketM)

    def parse(self, iExpr):
        """
        @iExpr -- string to parse
        @parsedExpr -- output parsed expression
        """
        logging.info('Parser started.')
        logging.debug('Parser IO:')
        logging.debug('Input: ' + iExpr)
        parsedExpr = []
        curPos = 0
        while curPos < len(iExpr):
            for matcher in self.matchers:
                result = matcher.val.match(iExpr, curPos)
                if result:
                    if result.re == self.numberM.val:
                        parsedExpr.append(definitions.Identifier(type=
                            matcher.type, val=float(result.group(0))))
                    else:
                        parsedExpr.append(definitions.Identifier(type=
                            matcher.type, val=result.group(0)))
                    curPos = result.end()
                    break
                elif matcher == self.matchers[-1]:
                    logging.debug('Output: ' + ', '.join([str(ident.val) for
                        ident in parsedExpr]) + '.')
                    raise ParseError(iExpr, curPos)
        logging.debug('Output: ' + ', '.join([str(ident.val) for ident in
            parsedExpr]) + '.')
        parseStat = defaultdict(int)
        for ident in parsedExpr:
            parseStat[ident.type] += 1
        statMsg = 'Parser statistics: \n'
        statMsg += '- ' + str(parseStat['op']) + ' operators,\n'
        statMsg += '- ' + str(parseStat['func']) + ' functions,\n'
        statMsg += '- ' + str(parseStat['lb']) + ' opening brackets,\n'
        statMsg += '- ' + str(parseStat['rb']) + ' closing brackets.'
        logging.info(statMsg)
        return parsedExpr

<mask token>


class ParseError(Exception):

    def __init__(self, eExpr, ePos):
        self.expr = eExpr
        self.pos = ePos
    <mask token>


class Parser(object):

    def __init__(self):
        self.numberM = definitions.Identifier(type='num', val=re.compile(
            definitions._number.regex))
        self.functionM = definitions.Identifier(type='func', val=re.compile
            ('|'.join([re.escape(func) for func in sorted(definitions.
            _functions, key=lambda func: len(func), reverse=True)])))
        self.operatorM = definitions.Identifier(type='op', val=re.compile(
            '|'.join([re.escape(op) for op in sorted(definitions._operators,
            key=lambda func: len(func), reverse=True)])))
        self.lBracketM = definitions.Identifier(type='lb', val=re.compile(
            '\\('))
        self.rBracketM = definitions.Identifier(type='rb', val=re.compile(
            '\\)'))
        self.matchers = (self.numberM, self.functionM, self.operatorM, self
            .lBracketM, self.rBracketM)

    def parse(self, iExpr):
        """
        @iExpr -- string to parse
        @parsedExpr -- output parsed expression
        """
        logging.info('Parser started.')
        logging.debug('Parser IO:')
        logging.debug('Input: ' + iExpr)
        parsedExpr = []
        curPos = 0
        while curPos < len(iExpr):
            for matcher in self.matchers:
                result = matcher.val.match(iExpr, curPos)
                if result:
                    if result.re == self.numberM.val:
                        parsedExpr.append(definitions.Identifier(type=
                            matcher.type, val=float(result.group(0))))
                    else:
                        parsedExpr.append(definitions.Identifier(type=
                            matcher.type, val=result.group(0)))
                    curPos = result.end()
                    break
                elif matcher == self.matchers[-1]:
                    logging.debug('Output: ' + ', '.join([str(ident.val) for
                        ident in parsedExpr]) + '.')
                    raise ParseError(iExpr, curPos)
        logging.debug('Output: ' + ', '.join([str(ident.val) for ident in
            parsedExpr]) + '.')
        parseStat = defaultdict(int)
        for ident in parsedExpr:
            parseStat[ident.type] += 1
        statMsg = 'Parser statistics: \n'
        statMsg += '- ' + str(parseStat['op']) + ' operators,\n'
        statMsg += '- ' + str(parseStat['func']) + ' functions,\n'
        statMsg += '- ' + str(parseStat['lb']) + ' opening brackets,\n'
        statMsg += '- ' + str(parseStat['rb']) + ' closing brackets.'
        logging.info(statMsg)
        return parsedExpr

<mask token>


class ParseError(Exception):

    def __init__(self, eExpr, ePos):
        self.expr = eExpr
        self.pos = ePos

    def __str__(self):
        msg = 'unknown token at ' + str(self.pos) + ': \n'
        msg += self.expr + '\n'
        msg += ''.join([' ' for i in xrange(self.pos - 1)]) + '---'
        return msg


class Parser(object):

    def __init__(self):
        self.numberM = definitions.Identifier(type='num', val=re.compile(
            definitions._number.regex))
        self.functionM = definitions.Identifier(type='func', val=re.compile
            ('|'.join([re.escape(func) for func in sorted(definitions.
            _functions, key=lambda func: len(func), reverse=True)])))
        self.operatorM = definitions.Identifier(type='op', val=re.compile(
            '|'.join([re.escape(op) for op in sorted(definitions._operators,
            key=lambda func: len(func), reverse=True)])))
        self.lBracketM = definitions.Identifier(type='lb', val=re.compile(
            '\\('))
        self.rBracketM = definitions.Identifier(type='rb', val=re.compile(
            '\\)'))
        self.matchers = (self.numberM, self.functionM, self.operatorM, self
            .lBracketM, self.rBracketM)

    def parse(self, iExpr):
        """
        @iExpr -- string to parse
        @parsedExpr -- output parsed expression
        """
        logging.info('Parser started.')
        logging.debug('Parser IO:')
        logging.debug('Input: ' + iExpr)
        parsedExpr = []
        curPos = 0
        while curPos < len(iExpr):
            for matcher in self.matchers:
                result = matcher.val.match(iExpr, curPos)
                if result:
                    if result.re == self.numberM.val:
                        parsedExpr.append(definitions.Identifier(type=
                            matcher.type, val=float(result.group(0))))
                    else:
                        parsedExpr.append(definitions.Identifier(type=
                            matcher.type, val=result.group(0)))
                    curPos = result.end()
                    break
                elif matcher == self.matchers[-1]:
                    logging.debug('Output: ' + ', '.join([str(ident.val) for
                        ident in parsedExpr]) + '.')
                    raise ParseError(iExpr, curPos)
        logging.debug('Output: ' + ', '.join([str(ident.val) for ident in
            parsedExpr]) + '.')
        parseStat = defaultdict(int)
        for ident in parsedExpr:
            parseStat[ident.type] += 1
        statMsg = 'Parser statistics: \n'
        statMsg += '- ' + str(parseStat['op']) + ' operators,\n'
        statMsg += '- ' + str(parseStat['func']) + ' functions,\n'
        statMsg += '- ' + str(parseStat['lb']) + ' opening brackets,\n'
        statMsg += '- ' + str(parseStat['rb']) + ' closing brackets.'
        logging.info(statMsg)
        return parsedExpr

import logging
from collections import defaultdict
import re
import calculator.definitions as definitions


class ParseError(Exception):

    def __init__(self, eExpr, ePos):
        self.expr = eExpr
        self.pos = ePos

    def __str__(self):
        msg = 'unknown token at ' + str(self.pos) + ': \n'
        msg += self.expr + '\n'
        msg += ''.join([' ' for i in xrange(self.pos - 1)]) + '---'
        return msg


class Parser(object):

    def __init__(self):
        self.numberM = definitions.Identifier(type='num', val=re.compile(
            definitions._number.regex))
        self.functionM = definitions.Identifier(type='func', val=re.compile
            ('|'.join([re.escape(func) for func in sorted(definitions.
            _functions, key=lambda func: len(func), reverse=True)])))
        self.operatorM = definitions.Identifier(type='op', val=re.compile(
            '|'.join([re.escape(op) for op in sorted(definitions._operators,
            key=lambda func: len(func), reverse=True)])))
        self.lBracketM = definitions.Identifier(type='lb', val=re.compile(
            '\\('))
        self.rBracketM = definitions.Identifier(type='rb', val=re.compile(
            '\\)'))
        self.matchers = (self.numberM, self.functionM, self.operatorM, self
            .lBracketM, self.rBracketM)

    def parse(self, iExpr):
        """
        @iExpr -- string to parse
        @parsedExpr -- output parsed expression
        """
        logging.info('Parser started.')
        logging.debug('Parser IO:')
        logging.debug('Input: ' + iExpr)
        parsedExpr = []
        curPos = 0
        while curPos < len(iExpr):
            for matcher in self.matchers:
                result = matcher.val.match(iExpr, curPos)
                if result:
                    if result.re == self.numberM.val:
                        parsedExpr.append(definitions.Identifier(type=
                            matcher.type, val=float(result.group(0))))
                    else:
                        parsedExpr.append(definitions.Identifier(type=
                            matcher.type, val=result.group(0)))
                    curPos = result.end()
                    break
                elif matcher == self.matchers[-1]:
                    logging.debug('Output: ' + ', '.join([str(ident.val) for
                        ident in parsedExpr]) + '.')
                    raise ParseError(iExpr, curPos)
        logging.debug('Output: ' + ', '.join([str(ident.val) for ident in
            parsedExpr]) + '.')
        parseStat = defaultdict(int)
        for ident in parsedExpr:
            parseStat[ident.type] += 1
        statMsg = 'Parser statistics: \n'
        statMsg += '- ' + str(parseStat['op']) + ' operators,\n'
        statMsg += '- ' + str(parseStat['func']) + ' functions,\n'
        statMsg += '- ' + str(parseStat['lb']) + ' opening brackets,\n'
        statMsg += '- ' + str(parseStat['rb']) + ' closing brackets.'
        logging.info(statMsg)
        return parsedExpr

import logging
from collections import defaultdict
import re
import calculator.definitions as definitions

class ParseError(Exception):
    def __init__(self, eExpr, ePos):
        self.expr = eExpr
        self.pos = ePos
    def __str__(self):
        msg = 'unknown token at ' + str(self.pos) + ': \n'
        msg += self.expr + '\n'
        msg += ''.join([' ' for i in xrange(self.pos - 1)]) + '---'
        return msg

class Parser(object):
    def __init__(self):
        self.numberM = definitions.Identifier(
            type = 'num', val = re.compile(definitions._number.regex))
        
        self.functionM = definitions.Identifier(type = 'func', val = re.compile( '|'.join( 
            [re.escape(func) for func in sorted(definitions._functions, key=lambda func: len(func), reverse=True) ] )))

        self.operatorM = definitions.Identifier(type = 'op', val = re.compile( '|'.join( 
            [re.escape(op) for op in sorted(definitions._operators, key=lambda func: len(func), reverse=True)] )))
        
        self.lBracketM = definitions.Identifier(type = 'lb', val = re.compile('\('))
        self.rBracketM = definitions.Identifier(type = 'rb', val = re.compile('\)'))

        self.matchers = (self.numberM, self.functionM, self.operatorM, self.lBracketM, self.rBracketM)


    def parse(self, iExpr):
        '''
        @iExpr -- string to parse
        @parsedExpr -- output parsed expression
        '''

        logging.info('Parser started.')
        logging.debug('Parser IO:')
        logging.debug('Input: ' + iExpr)

        parsedExpr = []
        curPos = 0

        while curPos < len(iExpr):
            for matcher in self.matchers:
                result = matcher.val.match(iExpr, curPos)
                if result:
                    if result.re == self.numberM.val:
                        parsedExpr.append( \
                            definitions.Identifier(type = matcher.type, val = float(result.group(0))))
                    else:
                        parsedExpr.append( \
                            definitions.Identifier(type = matcher.type, val = result.group(0)))
                    curPos = result.end()
                    break
                elif matcher == self.matchers[-1]:
                    # can't find suitable matcher
                    logging.debug('Output: ' + ', '.join([ str(ident.val) for ident in parsedExpr ]) + '.')
                    raise ParseError(iExpr, curPos)
                    


        logging.debug('Output: ' + ', '.join([ str(ident.val) for ident in parsedExpr ]) + '.')

        parseStat = defaultdict(int)
        for ident in parsedExpr:
            parseStat[ident.type] += 1

        statMsg = 'Parser statistics: \n'
        statMsg += '- ' + str(parseStat['op']) + ' operators,\n'
        statMsg += '- ' + str(parseStat['func']) + ' functions,\n'
        statMsg += '- ' + str(parseStat['lb']) + ' opening brackets,\n'
        statMsg += '- ' + str(parseStat['rb']) + ' closing brackets.'
        logging.info(statMsg)

        return parsedExpr
