4Suite™ API Documentation

# ► Module Ft.Xml.XPath.ParsedExpr

The implementation of parsed XPath expression tokens.

    Copyright 2005 Fourthought, Inc. (USA).
    Detailed license and copyright information: http://4suite.org/COPYRIGHT
    Project home, documentation, distributions: http://4suite.org/

Classes:
FunctionCall, FunctionCall1, FunctionCall2, FunctionCall3, FunctionCallN, ParsedAdditiveExpr, ParsedAndExpr, ParsedEqualityExpr, ParsedFilterExpr, ParsedLiteralExpr, ParsedMultiplicativeExpr, ParsedNLiteralExpr, ParsedOrExpr, ParsedPathExpr, ParsedRelationalExpr, ParsedUnaryExpr, ParsedUnionExpr, ParsedVariableReferenceExpr

Functions:
ParsedFunctionCallExpr

Globals:
EMPTY_NAMESPACE

## Classes

class FunctionCall
  An object representing a function call expression (XPath 1.0 grammar production 16: FunctionCall)

  ### Methods

  __getinitargs__(self)
  __getstate__(self)
  __init__(self, name, key, args)
  __repr__(self)
  __str__(self)
  error(self, *args)
  evaluate(self, context)
    Returns the result of calling the function
  getArgumentError(self)
  pprint(self, indent='')
class FunctionCall1(FunctionCall)

  ### Methods

  __init__(self, name, key, args)
    # a function call with 1 argument
    Overrides: __init__ from class FunctionCall
  evaluate(self, context)
    Overrides: evaluate from class FunctionCall

  ### Methods inherited from class FunctionCall

  __getinitargs__, __getstate__, __repr__, __str__, error, getArgumentError, pprint
class FunctionCall2(FunctionCall)

  ### Methods

  __init__(self, name, key, args)
    # a function call with 2 arguments
    Overrides: __init__ from class FunctionCall
  evaluate(self, context)
    Overrides: evaluate from class FunctionCall

  ### Methods inherited from class FunctionCall

  __getinitargs__, __getstate__, __repr__, __str__, error, getArgumentError, pprint
class FunctionCall3(FunctionCall)

  ### Methods

  __init__(self, name, key, args)
    # a function call with 3 arguments
    Overrides: __init__ from class FunctionCall
  evaluate(self, context)
    Overrides: evaluate from class FunctionCall

  ### Methods inherited from class FunctionCall

  __getinitargs__, __getstate__, __repr__, __str__, error, getArgumentError, pprint
class FunctionCallN(FunctionCall)

  ### Methods

  __init__(self, name, key, args)
    # a function call with more than 3 arguments
    Overrides: __init__ from class FunctionCall
  evaluate(self, context)
    Overrides: evaluate from class FunctionCall

  ### Methods inherited from class FunctionCall

  __getinitargs__, __getstate__, __repr__, __str__, error, getArgumentError, pprint
class ParsedAdditiveExpr
  An object representing an additive expression (XPath 1.0 grammar production 25: AdditiveExpr)

  ### Methods

  __init__(self, sign, left, right)
  __repr__(self)
  __str__(self)
  evaluate(self, context)
    Returns a number
  pprint(self, indent='')
class ParsedAndExpr
  An object representing an and expression (XPath 1.0 grammar production 22: AndExpr)

  ### Methods

  __init__(self, left, right)
  __repr__(self)
  __str__(self)
  evaluate(self, context)
    Returns a boolean
  pprint(self, indent='')
class ParsedEqualityExpr
  An object representing an equality expression (XPath 1.0 grammar production 23: EqualityExpr)

  ### Methods

  __getstate__(self)
  __init__(self, op, left, right)
  __repr__(self)
  __setstate__(self, state)
  __str__(self)
  evaluate(self, context)
    Returns a boolean
  pprint(self, indent='')
class ParsedFilterExpr
  An object representing a filter expression (XPath 1.0 grammar production 20: FilterExpr)

  ### Methods

  __init__(self, filter_, predicates)
  __repr__(self)
  __str__(self)
  evaluate(self, context)
    Returns a node-set
  pprint(self, indent='')
  shiftContext(self, context, index, set, len, func)
class ParsedLiteralExpr
  An object representing a string literal expression (XPath 1.0 grammar production 29: Literal)

  ### Methods

  __init__(self, literal)
  __repr__(self)
  __str__(self)
  evaluate(self, context)
  pprint(self, indent='')
class ParsedMultiplicativeExpr
  An object representing an multiplicative expression (XPath 1.0 grammar production 26: MultiplicativeExpr)

  ### Methods

  __init__(self, opcode, left, right)
  __repr__(self)
  __str__(self)
  evaluate(self, context)
    Returns a number
  pprint(self, indent='')
class ParsedNLiteralExpr(ParsedLiteralExpr)
  An object representing a numeric literal expression (XPath 1.0 grammar production 30: Number)

  ### Methods

  __init__(self, nliteral)
    Overrides: __init__ from class ParsedLiteralExpr
  __repr__(self)
    Overrides: __repr__ from class ParsedLiteralExpr
  __str__(self)
    Overrides: __str__ from class ParsedLiteralExpr
  pprint(self, indent='')
    Overrides: pprint from class ParsedLiteralExpr

  ### Methods inherited from class ParsedLiteralExpr

  evaluate
class ParsedOrExpr
  An object representing an or expression (XPath 1.0 grammar production 21: OrExpr)

  ### Methods

  __init__(self, left, right)
  __repr__(self)
  __str__(self)
  evaluate(self, context)
    Returns a boolean
  pprint(self, indent='')
class ParsedPathExpr
  An object representing a path expression (XPath 1.0 grammar production 19: PathExpr)

  ### Methods

  __init__(self, descendant, left, right)
  __repr__(self)
  __str__(self)
  evaluate(self, context)
    Returns a node-set
  pprint(self, indent='')
class ParsedRelationalExpr
  An object representing a relational expression (XPath 1.0 grammar production 24: RelationalExpr)

  ### Methods

  __getstate__(self)
  __init__(self, opcode, left, right)
  __repr__(self)
  __setstate__(self, state)
  __str__(self)
  evaluate(self, context)
    Returns a boolean
  pprint(self, indent='')
class ParsedUnaryExpr
  An object representing a unary expression (XPath 1.0 grammar production 27: UnaryExpr)

  ### Methods

  __init__(self, exp)
  __repr__(self)
  __str__(self)
  evaluate(self, context)
    Returns a number
  pprint(self, indent='')
class ParsedUnionExpr
  An object representing a union expression (XPath 1.0 grammar production 18: UnionExpr)

  ### Methods

  __init__(self, left, right)
  __repr__(self)
  __str__(self)
  evaluate(self, context)
    Returns a node-set
  pprint(self, indent='')
class ParsedVariableReferenceExpr
  An object representing a variable reference expression (XPath 1.0 grammar production 36: VariableReference)

  ### Methods

  __init__(self, name)
  __repr__(self)
  __str__(self)
  evaluate(self, context)
    Returns a string
  pprint(self, indent='')

## Functions

ParsedFunctionCallExpr(name, args)
  Returns an object representing a function call expression (XPath 1.0 grammar production 16: FunctionCall)

## Globals

EMPTY_NAMESPACE = None