loki.expression.evaluation

Functions

eval_expr(expr[, context, strict])

Call Loki Evaluation Mapper to evaluate expression(s).

Classes

LokiEvaluationMapper([strict])

A mapper for evaluating expressions, based on pymbolic.mapper.evaluator.EvaluationMapper.

class LokiEvaluationMapper(strict=False, **kwargs)

Bases: EvaluationMapper

A mapper for evaluating expressions, based on pymbolic.mapper.evaluator.EvaluationMapper.

Parameters:

strict (bool) – Raise exception for unknown symbols/expressions (default: False).

static case_insensitive_getattr(obj, attr)

Case-insensitive version of getattr.

map_comparison(expr)

map_logical_and(expr)

map_logic_literal(expr)

map_float_literal(expr)

map_int_literal(expr)

map_variable(expr)

map_array(expr)

map_call(expr, name=None, parameters=None)

map_inline_call(expr)

eval_expr(expr, context=None, strict=False)

Call Loki Evaluation Mapper to evaluate expression(s).

Parameters:

• expr (Expression) – The expression as a string

• strict (bool, optional) – Whether to raise exception for unknown variables/symbols when evaluating an expression (default: False)

• context (dict, optional) – Symbol context, defining variables/symbols/procedures to help/support evaluating an expression

Returns:

The evaluated expression tree corresponding to the expression

Return type:

Expression