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How to use the pyparsing.CaselessKeyword function in pyparsing

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github coursera / dataduct / dataduct / database / parsers / utils.py View on Github external
from pyparsing import ZeroOrMore
from pyparsing import alphanums
from pyparsing import nums

# Intermediate parsers
_varchar_names = (CaselessKeyword('VARCHAR') | CaselessKeyword('TEXT'))
_varchar_names |= CaselessKeyword('NVARCHAR')

# Data types
_smallint = (CaselessKeyword('SMALLINT') | CaselessKeyword('INT2'))
_integer = CaselessKeyword('INTEGER')
_integer |= CaselessKeyword('INT') | CaselessKeyword('INT4')
_bigint = (CaselessKeyword('BIGINT') | CaselessKeyword('INT8'))
_decimal = Combine((CaselessKeyword('DECIMAL') | CaselessKeyword('NUMERIC')) + '(' + Word(nums + ' ,') + ')')  # noqa
_real = (CaselessKeyword('REAL') | CaselessKeyword('FLOAT4'))
_double = (CaselessKeyword('DOUBLE PRECISION') | CaselessKeyword('FLOAT') | CaselessKeyword('FLOAT8') | CaselessKeyword('DOUBLE'))  # noqa
_boolean = CaselessKeyword('BOOLEAN')
_char = (CaselessKeyword('CHAR') | CaselessKeyword('CHARACTER'))
_char |= (CaselessKeyword('NCHAR') | CaselessKeyword('BPCHAR'))
_varchar = Combine(_varchar_names + '(' + Word(alphanums) + ')')
_date = CaselessKeyword('DATE')
_text = CaselessKeyword('TEXT')
_timestamp = CaselessKeyword('TIMESTAMP')

# Create SQL keywords
_create = CaselessKeyword('CREATE')
_table = CaselessKeyword('TABLE')
_view = CaselessKeyword('VIEW')
_temp = CaselessKeyword('TEMP')
_temporary = CaselessKeyword('TEMPORARY')
_if_not_exists = CaselessKeyword('IF NOT EXISTS')
_or_replace = CaselessKeyword('OR REPLACE')
github google / encrypted-bigquery-client / src / query_parser.py View on Github external
def AddWithin(tokens):
    clauses['WITHIN'][len(clauses['SELECT'])] = tokens[0]

  def AddJoinArgument(tokens):
    clauses[tokens[0]].append(list(temp_stack))
    temp_stack[:] = []

  temp_stack = []

  as_kw = pp.CaselessKeyword('AS')
  select_kw = pp.CaselessKeyword('SELECT')
  within_kw = pp.CaselessKeyword('WITHIN')
  flatten_kw = pp.CaselessKeyword('FLATTEN')
  from_kw = pp.CaselessKeyword('FROM')
  join_kw = pp.CaselessKeyword('JOIN')
  join_on_kw = pp.CaselessKeyword('ON')
  where_kw = pp.CaselessKeyword('WHERE')
  having_kw = pp.CaselessKeyword('HAVING')
  order_kw = pp.CaselessKeyword('ORDER BY')
  asc_kw = pp.CaselessKeyword('ASC')
  desc_kw = pp.CaselessKeyword('DESC')
  group_kw = pp.CaselessKeyword('GROUP BY')
  limit_kw = pp.CaselessKeyword('LIMIT')

  push_label = pp.Word(
      pp.alphas, pp.alphas + pp.nums + '_' + '.').setParseAction(AddLabel)
  pos_int = pp.Word(pp.nums).setParseAction(AddInteger)
  order_label = (push_label +
                 pp.Optional((asc_kw | desc_kw).setParseAction(AddLast)))
  label = pp.Word(pp.alphas, pp.alphas + pp.nums + '_' + '.')
  alias_label = pp.Word(
github astropy / pyregion / lib / parser_ds9.py View on Github external
def define_shape(name, shape_args, args_repeat=None):
    lparen = Literal("(").suppress()
    rparen = Literal(")").suppress()
    comma = Literal(",").suppress()

    shape_name = CaselessKeyword(name)


    if args_repeat is None:
        shape_with_parens = And([shape_name, lparen,
                                 as_comma_separated_list(shape_args),
                                 rparen])

        shape_with_spaces = shape_name + And(shape_args)

    else:
        n1, n2 = args_repeat
        sl = []

        ss = shape_args[:n1]
        if ss:
            sl.append(as_comma_separated_list(ss))
github scikit-nano / scikit-nano / sknano / core / atoms / selections.py View on Github external
class ExWithinSelection(Selection):
    """Exclusive within :class:`Selection` class."""
    def apply(self, atoms):
        other = self.selection[-1].apply(atoms)
        filtered = atoms.query_ball_tree(other, self.selection[0])
        filtered = super().apply(atoms, filtered=filtered) - other
        return super().apply(atoms, filtered=filtered)


class AtomsSelectionParser(BaseClass):
    """Selection parser class."""
    ALL = CaselessKeyword('all')
    NONE = CaselessKeyword('none')
    NAME = CaselessKeyword('name')
    TYPE = CaselessKeyword('type')
    INDEX = CaselessKeyword('index')
    ID = CaselessKeyword('id')
    MOLID = CaselessKeyword('molid') | CaselessKeyword('mol')
    WITHIN = CaselessKeyword('within')
    EXWITHIN = CaselessKeyword('exwithin')
    SERIAL = CaselessKeyword('serial')
    ATOMICNUMBER = CaselessKeyword('atomicnumber')
    ELEMENT = CaselessKeyword('element')
    RESIDUE = CaselessKeyword('residue')
    NUMBONDS = CaselessKeyword('numbonds')

    OF = CaselessKeyword('of')

    NOT = CaselessKeyword('not')
    AND = CaselessKeyword('and')
    OR = CaselessKeyword('or')
github yahoo / panoptes / yahoo_panoptes / framework / resources.py View on Github external
def _parse_query(self):
        """
        Defines and parses the Resource DSL based on the query associated with the PanoptesResourceDSL object

        Returns:
            list: The list of tokens parsed

        Raises:
            ParseException: This exception is raised if any parsing error occurs
        """
        resource_fields = oneOf(
                'resource_site resource_class resource_subclass resource_type resource_id resource_endpoint',
                caseless=True)
        resource_metadata = CaselessLiteral('resource_metadata') + Literal('.') + Word(alphanums + '_')

        and_ = CaselessKeyword('AND').setParseAction(upcaseTokens)
        or_ = CaselessKeyword('OR').setParseAction(upcaseTokens)
        not_ = CaselessKeyword('NOT').setParseAction(upcaseTokens)
        in_ = CaselessKeyword('IN').setParseAction(upcaseTokens)
        like_ = CaselessKeyword('LIKE').setParseAction(upcaseTokens)

        operators = oneOf("= != eq ne", caseless=True).setParseAction(upcaseTokens)

        query_expression = Forward()

        query_l_val = (resource_fields | resource_metadata).setParseAction(downcaseTokens)
        query_r_val = QuotedString(quoteChar='"', escChar='\\')

        query_condition = Group(
                (query_l_val + operators + query_r_val) |
                (query_l_val + Optional(not_) + like_ + query_r_val) |
                (query_l_val + Optional(not_) + in_ + '(' + delimitedList(query_r_val) + ')')
github google / encrypted-bigquery-client / src / query_parser.py View on Github external
def AddJoinArgument(tokens):
    clauses[tokens[0]].append(list(temp_stack))
    temp_stack[:] = []

  temp_stack = []

  as_kw = pp.CaselessKeyword('AS')
  select_kw = pp.CaselessKeyword('SELECT')
  within_kw = pp.CaselessKeyword('WITHIN')
  flatten_kw = pp.CaselessKeyword('FLATTEN')
  from_kw = pp.CaselessKeyword('FROM')
  join_kw = pp.CaselessKeyword('JOIN')
  join_on_kw = pp.CaselessKeyword('ON')
  where_kw = pp.CaselessKeyword('WHERE')
  having_kw = pp.CaselessKeyword('HAVING')
  order_kw = pp.CaselessKeyword('ORDER BY')
  asc_kw = pp.CaselessKeyword('ASC')
  desc_kw = pp.CaselessKeyword('DESC')
  group_kw = pp.CaselessKeyword('GROUP BY')
  limit_kw = pp.CaselessKeyword('LIMIT')

  push_label = pp.Word(
      pp.alphas, pp.alphas + pp.nums + '_' + '.').setParseAction(AddLabel)
  pos_int = pp.Word(pp.nums).setParseAction(AddInteger)
  order_label = (push_label +
                 pp.Optional((asc_kw | desc_kw).setParseAction(AddLast)))
  label = pp.Word(pp.alphas, pp.alphas + pp.nums + '_' + '.')
  alias_label = pp.Word(
      pp.alphas, pp.alphas + pp.nums + '_' + '.').setParseAction(AddAlias)
  within_label = pp.Word(
      pp.alphas, pp.alphas + pp.nums + '_' + '.').setParseAction(AddWithin)
github RDFLib / rdflib / rdflib / plugins / sparql / parser.py View on Github external
| Comp('Builtin_SECONDS', Keyword('SECONDS') + '(' + Param('arg', Expression) + ')').setEvalFn(op.Builtin_SECONDS) \
    | Comp('Builtin_TIMEZONE', Keyword('TIMEZONE') + '(' + Param('arg', Expression) + ')').setEvalFn(op.Builtin_TIMEZONE) \
    | Comp('Builtin_TZ', Keyword('TZ') + '(' + Param('arg', Expression) + ')').setEvalFn(op.Builtin_TZ) \
    | Comp('Builtin_NOW', Keyword('NOW') + NIL).setEvalFn(op.Builtin_NOW) \
    | Comp('Builtin_UUID', Keyword('UUID') + NIL).setEvalFn(op.Builtin_UUID) \
    | Comp('Builtin_STRUUID', Keyword('STRUUID') + NIL).setEvalFn(op.Builtin_STRUUID) \
    | Comp('Builtin_MD5', Keyword('MD5') + '(' + Param('arg', Expression) + ')').setEvalFn(op.Builtin_MD5) \
    | Comp('Builtin_SHA1', Keyword('SHA1') + '(' + Param('arg', Expression) + ')').setEvalFn(op.Builtin_SHA1) \
    | Comp('Builtin_SHA256', Keyword('SHA256') + '(' + Param('arg', Expression) + ')').setEvalFn(op.Builtin_SHA256) \
    | Comp('Builtin_SHA384', Keyword('SHA384') + '(' + Param('arg', Expression) + ')').setEvalFn(op.Builtin_SHA384) \
    | Comp('Builtin_SHA512', Keyword('SHA512') + '(' + Param('arg', Expression) + ')').setEvalFn(op.Builtin_SHA512) \
    | Comp('Builtin_COALESCE', Keyword('COALESCE') + Param('arg', ExpressionList)).setEvalFn(op.Builtin_COALESCE) \
    | Comp('Builtin_IF', Keyword('IF') + '(' + Param('arg1', Expression) + ',' + Param('arg2', Expression) + ',' + Param('arg3', Expression) + ')').setEvalFn(op.Builtin_IF) \
    | Comp('Builtin_STRLANG', Keyword('STRLANG') + '(' + Param('arg1', Expression) + ',' + Param('arg2', Expression) + ')').setEvalFn(op.Builtin_STRLANG) \
    | Comp('Builtin_STRDT', Keyword('STRDT') + '(' + Param('arg1', Expression) + ',' + Param('arg2', Expression) + ')').setEvalFn(op.Builtin_STRDT) \
    | Comp('Builtin_sameTerm', Keyword('sameTerm') + '(' + Param('arg1', Expression) + ',' + Param('arg2', Expression) + ')').setEvalFn(op.Builtin_sameTerm) \
    | Comp('Builtin_isIRI', Keyword('isIRI') + '(' + Param('arg', Expression) + ')').setEvalFn(op.Builtin_isIRI) \
    | Comp('Builtin_isURI', Keyword('isURI') + '(' + Param('arg', Expression) + ')').setEvalFn(op.Builtin_isIRI) \
    | Comp('Builtin_isBLANK', Keyword('isBLANK') + '(' + Param('arg', Expression) + ')').setEvalFn(op.Builtin_isBLANK) \
    | Comp('Builtin_isLITERAL', Keyword('isLITERAL') + '(' + Param('arg', Expression) + ')').setEvalFn(op.Builtin_isLITERAL) \
    | Comp('Builtin_isNUMERIC', Keyword('isNUMERIC') + '(' + Param('arg', Expression) + ')').setEvalFn(op.Builtin_isNUMERIC) \
    | RegexExpression \
    | ExistsFunc \
    | NotExistsFunc

# [71] ArgList ::= NIL | '(' 'DISTINCT'? Expression ( ',' Expression )* ')'
ArgList = NIL | '(' + Param('distinct', _Distinct) + delimitedList(
    ParamList('expr', Expression)) + ')'

# [128] iriOrFunction ::= iri Optional(ArgList)
iriOrFunction = (Comp(
    'Function', Param('iri', iri) + ArgList).setEvalFn(op.Function)) | iri
github southampton / cortex / lib / parser.py View on Github external
def parse(self, query):
		"""Parses a query string."""

		# Parse instructions
		quoted_string = QuotedString(quoteChar='"', escChar='\\', unquoteResults=True)
		field_name = Word(alphas, alphanums + '_')
		subexpression = Forward()
		boolean_expression = Forward()
		binary_operator = Literal('=') | Literal('<=') | Literal('<') | Literal('>=') | Literal('>')
		boolean_operator = CaselessKeyword('AND') | CaselessKeyword('OR')
		boolean_not = CaselessKeyword('NOT')
		boolean_value = CaselessKeyword("true") ^ CaselessKeyword("false")
		integer = Word(nums)
		rvalue = quoted_string ^ boolean_value ^ integer
		field_to_value = field_name + binary_operator + rvalue
		expression = Optional(boolean_not) + ((subexpression + ZeroOrMore(boolean_expression)) | (field_to_value + ZeroOrMore(boolean_expression)))
		boolean_expression << boolean_operator + expression
		left_bracket = Literal('(')
		right_bracket = Literal(')')
		subexpression << (left_bracket + expression + right_bracket)
		search_query = expression

		# Parse actions for emitting special cases
		field_to_value.setParseAction(do_field_to_value)
		boolean_operator.setParseAction(do_boolean_operator)
		boolean_not.setParseAction(do_boolean_operator)
		boolean_value.setParseAction(do_boolean_value)
		integer.setParseAction(do_integer)
github chadmv / cmt / scripts / cmt / dge.py View on Github external
"sqrt": self.sqrt,
            "cos": self.cos,
            "sin": self.sin,
            "tan": self.tan,
            "acos": self.acos,
            "asin": self.asin,
            "atan": self.atan,
            "distance": self.distance,
        }
        self.conditionals = ["==", "!=", ">", ">=", "<", "<="]

        # use CaselessKeyword for e and pi, to avoid accidentally matching
        # functions that start with 'e' or 'pi' (such as 'exp'); Keyword
        # and CaselessKeyword only match whole words
        e = CaselessKeyword("E")
        pi = CaselessKeyword("PI")
        # fnumber = Combine(Word("+-"+nums, nums) +
        #                    Optional("." + Optional(Word(nums))) +
        #                    Optional(e + Word("+-"+nums, nums)))
        # or use provided pyparsing_common.number, but convert back to str:
        # fnumber = ppc.number().addParseAction(lambda t: str(t[0]))
        fnumber = Regex(r"[+-]?\d+(?:\.\d*)?(?:[eE][+-]?\d+)?")
        ident = Word(alphas, alphanums + "_$")

        plus, minus, mult, div = map(Literal, "+-*/")
        lpar, rpar = map(Suppress, "()")
        addop = plus | minus
        multop = mult | div
        expop = Literal("^")
        comparison_op = oneOf(" ".join(self.conditionals))
        qm, colon = map(Literal, "?:")
        assignment = Literal("=")
github edsu / mediatypes / lib / rdflib / sparql / parser.py View on Github external
Verb.setName('Verb')


# Expression:
Expression = Forward()
if DEBUG:
    Expression.setName('Expression')

# BuiltInCall:
STR = Suppress(CaselessKeyword('STR'))
LANG = Suppress(CaselessKeyword('LANG'))
LANGMATCHES = Suppress(CaselessKeyword('LANGMATCHES'))
DATATYPE = Suppress(CaselessKeyword('DATATYPE'))
BOUND = Suppress(CaselessKeyword('BOUND'))
isIRI = Suppress(CaselessKeyword('isIRI'))
isURI = Suppress(CaselessKeyword('isURI'))
isBLANK = Suppress(CaselessKeyword('isBLANK'))
isLITERAL = Suppress(CaselessKeyword('isLITERAL'))
sameTerm = Suppress(CaselessKeyword('sameTERM'))

# RegexExpression
REGEX = Suppress(CaselessKeyword('REGEX'))
RegexExpression = (REGEX + LP + Expression + COMMA + Expression +
                   Optional(COMMA + Expression) + RP).setParseAction(
  refer_component(components.FunctionLibrary.ParsedREGEXInvocation))
if DEBUG:
    RegexExpression.setName('RegexExpression')

BuiltInCall = (
  (STR + LP + Expression + RP).setParseAction(
    refer_component(components.FunctionLibrary.BuiltinFunctionCall,
                    [components.FunctionLibrary.STR])) |

pyparsing

pyparsing module - Classes and methods to define and execute parsing grammars

GitHub
MIT
Latest version published 1 month ago

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94 / 100
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