concepts.pdsketch.strips.strips_expression.SQuantificationExpression#

class SQuantificationExpression[source]#

Bases: SBoolOutputExpression

The representation of a quantification expression.

Methods

`ground`(variable_dict[, state])	Return a new expression with all variables grounded according to the given variable dictionary.
`iter_effect_predicates`()	Iterate over the effect predicate names in the expression.
`iter_precondition_predicates`()	Iterate over the precondition predicate names in the expression.

Attributes

`is_conjunction`	Whether the expression is a conjunction (FORALL quantification).
`is_exists`	Whether the expression is a disjunction (EXISTS quantification).
`is_forall`	Whether the expression is a conjunction (FORALL quantification).
`variable`	The variable to be quantified.
`expr`	The expression to be quantified.
`is_disjunction`	Whether the expression is a disjunction (EXISTS quantification).

__init__(variable, expr, is_disjunction)[source]#

Initialize a quantification expression.

Parameters:

variable (Variable) – the variable to be quantified.
expr (SBoolOutputExpression) – the expression to be quantified.
is_disjunction (bool) – whether the expression is a disjunction (EXISTS quantification).

ground(variable_dict, state=None)[source]#

Return a new expression with all variables grounded according to the given variable dictionary.

Parameters:

iter_effect_predicates()#

Iterate over the effect predicate names in the expression.

iter_precondition_predicates()[source]#

Iterate over the precondition predicate names in the expression.

property is_conjunction: bool#: Whether the expression is a conjunction (FORALL quantification).

is_disjunction: bool#: Whether the expression is a disjunction (EXISTS quantification).

property is_exists: bool#: Whether the expression is a disjunction (EXISTS quantification).

property is_forall: bool#: Whether the expression is a conjunction (FORALL quantification).