def parse(timeseries_expression, method=None, functions=None, debug=False):
'''Function for parsing :ref:`timeseries expressions <dsl-script>`.
If succesful, it returns an instance of :class:`dynts.dsl.Expr` which
can be used to to populate timeseries or scatters once data is available.
Parsing is implemented using the ply_ module,
an implementation of lex and yacc parsing tools for Python.
:parameter expression: A :ref:`timeseries expressions <dsl-script>` string.
:parameter method: Not yet used.
:parameter functions: dictionary of functions to use when parsing.
If not provided the :data:`dynts.function_registry`
will be used.
Default ``None``.
:parameter debug: debug flag for ply_. Default ``False``.
For examples and usage check the :ref:`dsl documentation <dsl>`.
.. _ply: http://www.dabeaz.com/ply/
'''
if not parsefunc:
raise ExpressionError('Could not parse. No parser installed.')
functions = functions if functions is not None else function_registry
expr_str = to_string(timeseries_expression).lower()
return parsefunc(expr_str, functions, method, debug)
def parse(timeseries_expression, method = None,
functions = None, debug = False):
'''Function for parsing :ref:`timeseries expressions <dsl-script>`.
If succesful, it returns an instance of :class:`dynts.dsl.Expr` which
can be used to to populate timeseries or scatters once data is available.
Parsing is implemented using the ply_ module,
an implementation of lex and yacc parsing tools for Python.
:parameter expression: A :ref:`timeseries expressions <dsl-script>` string.
:parameter method: Not yet used.
:parameter functions: dictionary of functions to use when parsing.
If not provided the :data:`dynts.function_registry`
will be used.
Default ``None``.
:parameter debug: debug flag for ply_. Default ``False``.
For examples and usage check the :ref:`dsl documentation <dsl>`.
.. _ply: http://www.dabeaz.com/ply/
'''
if not parsefunc:
raise ExpressionError('Could not parse. No parser installed.')
functions = functions if functions is not None else function_registry
expr_str = to_string(timeseries_expression).lower()
return parsefunc(expr_str, functions, method, debug)
def parse(timeseries_expression, method = None, functions = None, debug = False):
'''Function for parsing :ref:`timeseries expressions <dsl-script>`.
If succesful, it returns an instance of :class:`dynts.dsl.Expr`.'''
from ply import yacc
from .rules import rules
functions = functions if functions is not None else function_registry
ru = rules(functions)
ru.build()
ru.input(to_string(timeseries_expression).lower())
tokens = ru.tokens
precedence = ru.precedence
yacc = yacc.yacc(method = method or 'SLR')
return yacc.parse(lexer = ru.lexer, debug = debug)
def parse(timeseries_expression, method=None, functions=None, debug=False):
'''Function for parsing :ref:`timeseries expressions <dsl-script>`.
If succesful, it returns an instance of :class:`dynts.dsl.Expr`.'''
from ply import yacc
from .rules import rules
functions = functions if functions is not None else function_registry
ru = rules(functions)
ru.build()
ru.input(to_string(timeseries_expression).lower())
tokens = ru.tokens
precedence = ru.precedence
yacc = yacc.yacc(method=method or 'SLR')
return yacc.parse(lexer=ru.lexer, debug=debug)