patrick/foliage-rs
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Refactoring

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This commit is contained in:
Patrick Lühne 2020-04-09 15:11:16 +02:00
parent 7b2b292727
commit f949c0f3f8
Signed by: patrick
GPG Key ID: 05F3611E97A70ABF
2 changed files with 46 additions and 60 deletions
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78
src/format/formulas.rs
View File

@ -29,7 +29,7 @@ impl std::fmt::Display for crate::PredicateDeclaration
}
#[derive(Clone, Copy, Eq, PartialEq)]
enum ChildPosition
enum FormulaChildPosition
{
Any,
ImpliesAntecedent,
@ -39,7 +39,7 @@ struct FormulaDisplay<'formula>
{
formula: &'formula crate::Formula,
parent_formula: Option<&'formula crate::Formula>,
position: ChildPosition,
position: FormulaChildPosition,
}
impl<'formula> FormulaDisplay<'formula>
@ -97,7 +97,7 @@ impl<'formula> FormulaDisplay<'formula>
{
// Implications with the same direction nested on the antecedent side
// require parentheses because implication is considered right-associative
self.position == ChildPosition::ImpliesAntecedent
self.position == FormulaChildPosition::ImpliesAntecedent
}
else
{
@ -113,7 +113,7 @@ impl<'formula> FormulaDisplay<'formula>
}
fn display_formula<'formula>(formula: &'formula crate::Formula,
parent_formula: Option<&'formula crate::Formula>, position: ChildPosition)
parent_formula: Option<&'formula crate::Formula>, position: FormulaChildPosition)
-> FormulaDisplay<'formula>
{
FormulaDisplay
@ -158,7 +158,7 @@ impl<'formula> std::fmt::Debug for FormulaDisplay<'formula>
}
write!(format, " {:?}", display_formula(&exists.argument, Some(self.formula),
ChildPosition::Any))?;
FormulaChildPosition::Any))?;
}
},
crate::Formula::ForAll(for_all) =>
@ -182,11 +182,11 @@ impl<'formula> std::fmt::Debug for FormulaDisplay<'formula>
}
write!(format, " {:?}", display_formula(&for_all.argument, Some(self.formula),
ChildPosition::Any))?;
FormulaChildPosition::Any))?;
}
},
crate::Formula::Not(argument) => write!(format, "not {:?}",
display_formula(argument, Some(self.formula), ChildPosition::Any))?,
display_formula(argument, Some(self.formula), FormulaChildPosition::Any))?,
crate::Formula::And(arguments) =>
{
if arguments.is_empty()
@ -198,7 +198,7 @@ impl<'formula> std::fmt::Debug for FormulaDisplay<'formula>
let (parent_formula, position) = match arguments.len()
{
1 => (self.parent_formula, self.position),
_ => (Some(self.formula), ChildPosition::Any),
_ => (Some(self.formula), FormulaChildPosition::Any),
};
let mut separator = "";
@ -223,7 +223,7 @@ impl<'formula> std::fmt::Debug for FormulaDisplay<'formula>
let (parent_formula, position) = match arguments.len()
{
1 => (self.parent_formula, self.position),
_ => (Some(self.formula), ChildPosition::Any),
_ => (Some(self.formula), FormulaChildPosition::Any),
};
let mut separator = "";
@ -243,13 +243,13 @@ impl<'formula> std::fmt::Debug for FormulaDisplay<'formula>
{
write!(format, "{:?}",
display_formula(antecedent, Some(self.formula),
ChildPosition::ImpliesAntecedent))
FormulaChildPosition::ImpliesAntecedent))
};
let format_implication = |format: &mut std::fmt::Formatter| -> Result<_, _>
{
write!(format, "{:?}",
display_formula(implication, Some(self.formula), ChildPosition::Any))
display_formula(implication, Some(self.formula), FormulaChildPosition::Any))
};
match direction
@ -279,7 +279,7 @@ impl<'formula> std::fmt::Debug for FormulaDisplay<'formula>
let (parent_formula, position) = match arguments.len()
{
1 => (self.parent_formula, self.position),
_ => (Some(self.formula), ChildPosition::Any),
_ => (Some(self.formula), FormulaChildPosition::Any),
};
let mut separator = "";
@ -293,37 +293,23 @@ impl<'formula> std::fmt::Debug for FormulaDisplay<'formula>
}
}
},
// TODO: refactor
crate::Formula::Compare(
crate::Compare{operator: crate::ComparisonOperator::Less, left, right})
=> write!(format, "{:?} < {:?}",
display_term(left, None, crate::format::terms::ChildPosition::Any),
display_term(right, None, crate::format::terms::ChildPosition::Any))?,
crate::Formula::Compare(
crate::Compare{operator: crate::ComparisonOperator::LessOrEqual, left, right})
=> write!(format, "{:?} <= {:?}",
display_term(left, None, crate::format::terms::ChildPosition::Any),
display_term(right, None, crate::format::terms::ChildPosition::Any))?,
crate::Formula::Compare(
crate::Compare{operator: crate::ComparisonOperator::Greater, left, right})
=> write!(format, "{:?} > {:?}",
display_term(left, None, crate::format::terms::ChildPosition::Any),
display_term(right, None, crate::format::terms::ChildPosition::Any))?,
crate::Formula::Compare(
crate::Compare{operator: crate::ComparisonOperator::GreaterOrEqual, left, right})
=> write!(format, "{:?} >= {:?}",
display_term(left, None, crate::format::terms::ChildPosition::Any),
display_term(right, None, crate::format::terms::ChildPosition::Any))?,
crate::Formula::Compare(
crate::Compare{operator: crate::ComparisonOperator::Equal, left, right})
=> write!(format, "{:?} = {:?}",
display_term(left, None, crate::format::terms::ChildPosition::Any),
display_term(right, None, crate::format::terms::ChildPosition::Any))?,
crate::Formula::Compare(
crate::Compare{operator: crate::ComparisonOperator::NotEqual, left, right})
=> write!(format, "{:?} != {:?}",
display_term(left, None, crate::format::terms::ChildPosition::Any),
display_term(right, None, crate::format::terms::ChildPosition::Any))?,
crate::Formula::Compare(compare) =>
{
let operator_string = match compare.operator
{
crate::ComparisonOperator::Less => "<",
crate::ComparisonOperator::LessOrEqual => "<=",
crate::ComparisonOperator::Greater => ">",
crate::ComparisonOperator::GreaterOrEqual => ">=",
crate::ComparisonOperator::Equal => "=",
crate::ComparisonOperator::NotEqual => "!=",
};
write!(format, "{:?} {} {:?}",
display_term(&compare.left, None, TermChildPosition::Any),
operator_string,
display_term(&compare.right, None, TermChildPosition::Any))?
},
crate::Formula::Boolean(true) => write!(format, "true")?,
crate::Formula::Boolean(false) => write!(format, "false")?,
crate::Formula::Predicate(predicate) =>
@ -339,7 +325,7 @@ impl<'formula> std::fmt::Debug for FormulaDisplay<'formula>
for argument in &predicate.arguments
{
write!(format, "{}{:?}", separator, display_term(argument, None,
crate::format::terms::ChildPosition::Any))?;
TermChildPosition::Any))?;
separator = ", "
}
@ -370,7 +356,7 @@ impl std::fmt::Debug for crate::Formula
{
fn fmt(&self, format: &mut std::fmt::Formatter) -> std::fmt::Result
{
write!(format, "{:?}", display_formula(&self, None, ChildPosition::Any))
write!(format, "{:?}", display_formula(&self, None, FormulaChildPosition::Any))
}
}
@ -378,7 +364,7 @@ impl std::fmt::Display for crate::Formula
{
fn fmt(&self, format: &mut std::fmt::Formatter) -> std::fmt::Result
{
write!(format, "{}", display_formula(&self, None, ChildPosition::Any))
write!(format, "{}", display_formula(&self, None, FormulaChildPosition::Any))
}
}

28
src/format/terms.rs
View File

@ -1,5 +1,5 @@
#[derive(Clone, Copy, Eq, PartialEq)]
pub(crate) enum ChildPosition
pub(crate) enum TermChildPosition
{
Any,
Left,
@ -62,7 +62,7 @@ pub(crate) struct TermDisplay<'term>
{
term: &'term crate::Term,
parent_term: Option<&'term crate::Term>,
position: ChildPosition,
position: TermChildPosition,
}
impl<'term> TermDisplay<'term>
@ -110,7 +110,7 @@ impl<'term> TermDisplay<'term>
{
crate::BinaryOperator::Exponentiate =>
parent_binary_operation.operator == crate::BinaryOperator::Exponentiate
&& self.position == ChildPosition::Left,
&& self.position == TermChildPosition::Left,
crate::BinaryOperator::Multiply
| crate::BinaryOperator::Divide
=> match parent_binary_operation.operator
@ -118,7 +118,7 @@ impl<'term> TermDisplay<'term>
crate::BinaryOperator::Exponentiate => true,
crate::BinaryOperator::Divide
| crate::BinaryOperator::Modulo
=> self.position == ChildPosition::Right,
=> self.position == TermChildPosition::Right,
_ => false,
},
crate::BinaryOperator::Modulo => match parent_binary_operation.operator
@ -127,7 +127,7 @@ impl<'term> TermDisplay<'term>
crate::BinaryOperator::Multiply
| crate::BinaryOperator::Divide
| crate::BinaryOperator::Modulo
=> self.position == ChildPosition::Right,
=> self.position == TermChildPosition::Right,
_ => false,
},
crate::BinaryOperator::Add
@ -140,7 +140,7 @@ impl<'term> TermDisplay<'term>
| crate::BinaryOperator::Modulo
=> true,
crate::BinaryOperator::Subtract
=> self.position == ChildPosition::Right,
=> self.position == TermChildPosition::Right,
_ => false,
},
}
@ -150,7 +150,7 @@ impl<'term> TermDisplay<'term>
}
pub(crate) fn display_term<'term>(term: &'term crate::Term, parent_term: Option<&'term crate::Term>,
position: ChildPosition)
position: TermChildPosition)
-> TermDisplay<'term>
{
TermDisplay
@ -198,7 +198,7 @@ impl<'term> std::fmt::Debug for TermDisplay<'term>
for argument in &function.arguments
{
write!(format, "{}{:?}", separator,
display_term(&argument, Some(self.term), ChildPosition::Any))?;
display_term(&argument, Some(self.term), TermChildPosition::Any))?;
separator = ", ";
}
@ -221,18 +221,18 @@ impl<'term> std::fmt::Debug for TermDisplay<'term>
};
write!(format, "{:?} {} {:?}",
display_term(&binary_operation.left, Some(self.term), ChildPosition::Left),
display_term(&binary_operation.left, Some(self.term), TermChildPosition::Left),
operator_string,
display_term(&binary_operation.right, Some(self.term), ChildPosition::Right))
display_term(&binary_operation.right, Some(self.term), TermChildPosition::Right))
},
crate::Term::UnaryOperation(
crate::UnaryOperation{operator: crate::UnaryOperator::Negative, argument})
=> write!(format, "-{:?}",
display_term(argument, Some(self.term), ChildPosition::Any)),
display_term(argument, Some(self.term), TermChildPosition::Any)),
crate::Term::UnaryOperation(
crate::UnaryOperation{operator: crate::UnaryOperator::AbsoluteValue, argument})
=> write!(format, "|{:?}|",
display_term(argument, Some(self.term), ChildPosition::Any)),
display_term(argument, Some(self.term), TermChildPosition::Any)),
}?;
if requires_parentheses
@ -256,7 +256,7 @@ impl std::fmt::Debug for crate::Term
{
fn fmt(&self, format: &mut std::fmt::Formatter) -> std::fmt::Result
{
write!(format, "{:?}", display_term(&self, None, ChildPosition::Any))
write!(format, "{:?}", display_term(&self, None, TermChildPosition::Any))
}
}
@ -264,7 +264,7 @@ impl std::fmt::Display for crate::Term
{
fn fmt(&self, format: &mut std::fmt::Formatter) -> std::fmt::Result
{
write!(format, "{}", display_term(&self, None, ChildPosition::Any))
write!(format, "{}", display_term(&self, None, TermChildPosition::Any))
}
}