252 lines
7.8 KiB
Rust
252 lines
7.8 KiB
Rust
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pub(crate) struct VariableDeclarationDisplay<'a>
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{
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variable_declaration: &'a foliage::VariableDeclaration,
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}
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pub(crate) struct TermDisplay<'a>
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{
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term: &'a foliage::Term,
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}
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pub(crate) struct FormulaDisplay<'a>
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{
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formula: &'a foliage::Formula,
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}
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pub(crate) fn display_variable_declaration<'a>(variable_declaration: &'a foliage::VariableDeclaration)
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-> VariableDeclarationDisplay<'a>
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{
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VariableDeclarationDisplay
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{
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variable_declaration,
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}
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}
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pub(crate) fn display_term<'a>(term: &'a foliage::Term) -> TermDisplay<'a>
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{
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TermDisplay
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{
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term,
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}
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}
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pub(crate) fn display_formula<'a>(formula: &'a foliage::Formula)
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-> FormulaDisplay<'a>
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{
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FormulaDisplay
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{
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formula,
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}
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}
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impl<'a> std::fmt::Debug for VariableDeclarationDisplay<'a>
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{
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fn fmt(&self, format: &mut std::fmt::Formatter) -> std::fmt::Result
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{
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write!(format, "{}", &self.variable_declaration.name)
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}
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}
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impl<'a> std::fmt::Display for VariableDeclarationDisplay<'a>
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{
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fn fmt(&self, format: &mut std::fmt::Formatter) -> std::fmt::Result
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{
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write!(format, "{:?}", &self)
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}
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}
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impl<'a> std::fmt::Debug for TermDisplay<'a>
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{
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fn fmt(&self, format: &mut std::fmt::Formatter) -> std::fmt::Result
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{
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match &self.term
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{
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foliage::Term::Boolean(true) => write!(format, "$true"),
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foliage::Term::Boolean(false) => write!(format, "$false"),
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foliage::Term::SpecialInteger(foliage::SpecialInteger::Infimum) => write!(format, "c__infimum__"),
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foliage::Term::SpecialInteger(foliage::SpecialInteger::Supremum) => write!(format, "c__supremum__"),
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foliage::Term::Integer(value) => match value.is_negative()
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{
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true => write!(format, "$uminus({})", -value),
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false => write!(format, "{}", value),
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},
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foliage::Term::String(_) => panic!("strings not supported in TPTP"),
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foliage::Term::Variable(variable) =>
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write!(format, "{:?}", display_variable_declaration(&variable.declaration)),
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foliage::Term::Function(function) =>
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{
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write!(format, "{}", function.declaration.name)?;
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assert!(function.declaration.arity == function.arguments.len(),
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"function has a different number of arguments than declared (expected {}, got {})",
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function.declaration.arity, function.arguments.len());
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if function.arguments.len() > 0
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{
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write!(format, "{}(", function.declaration.name)?;
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let mut separator = "";
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for argument in &function.arguments
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{
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write!(format, "{}{:?}", separator, display_term(&argument))?;
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separator = ", ";
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}
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write!(format, ")")?;
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}
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Ok(())
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},
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foliage::Term::BinaryOperation(foliage::BinaryOperation{operator: foliage::BinaryOperator::Add, left, right})
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=> write!(format, "$sum({:?}, {:?})", display_term(left), display_term(right)),
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foliage::Term::BinaryOperation(foliage::BinaryOperation{operator: foliage::BinaryOperator::Subtract, left, right})
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=> write!(format, "$difference({:?}, {:?})", display_term(left), display_term(right)),
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foliage::Term::BinaryOperation(foliage::BinaryOperation{operator: foliage::BinaryOperator::Multiply, left, right})
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=> write!(format, "$product({:?}, {:?})", display_term(left), display_term(right)),
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foliage::Term::BinaryOperation(foliage::BinaryOperation{operator: foliage::BinaryOperator::Divide, ..})
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=> panic!("division not supported with TPTP output"),
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foliage::Term::BinaryOperation(foliage::BinaryOperation{operator: foliage::BinaryOperator::Modulo, ..})
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=> panic!("modulo not supported with TPTP output"),
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foliage::Term::BinaryOperation(foliage::BinaryOperation{operator: foliage::BinaryOperator::Exponentiate, ..})
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=> panic!("exponentiation not supported with TPTP output"),
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foliage::Term::UnaryOperation(foliage::UnaryOperation{operator: foliage::UnaryOperator::Negative, argument})
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=> write!(format, "$uminus({:?})", display_term(argument)),
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foliage::Term::UnaryOperation(foliage::UnaryOperation{operator: foliage::UnaryOperator::AbsoluteValue, ..})
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=> panic!("absolute value not supported with TPTP output"),
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}
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}
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}
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impl<'term> std::fmt::Display for TermDisplay<'term>
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{
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fn fmt(&self, format: &mut std::fmt::Formatter) -> std::fmt::Result
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{
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write!(format, "{:?}", self)
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}
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}
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impl<'formula> std::fmt::Debug for FormulaDisplay<'formula>
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{
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fn fmt(&self, format: &mut std::fmt::Formatter) -> std::fmt::Result
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{
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match &self.formula
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{
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foliage::Formula::Exists(exists) =>
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{
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write!(format, "?[")?;
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let mut separator = "";
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for parameter in exists.parameters.iter()
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{
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write!(format, "{}{:?}", separator, display_variable_declaration(parameter))?;
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separator = ", "
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}
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write!(format, "]: {:?}", display_formula(&exists.argument))?;
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},
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foliage::Formula::ForAll(for_all) =>
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{
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write!(format, "![")?;
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let mut separator = "";
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for parameter in for_all.parameters.iter()
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{
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write!(format, "{}{:?}", separator, display_variable_declaration(parameter))?;
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separator = ", "
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}
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write!(format, "]: {:?}", display_formula(&for_all.argument))?;
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},
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foliage::Formula::Not(argument) => write!(format, "~{:?}", display_formula(argument))?,
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foliage::Formula::And(arguments) =>
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{
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write!(format, "(")?;
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let mut separator = "";
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assert!(!arguments.is_empty());
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for argument in arguments
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{
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write!(format, "{}{:?}", separator, display_formula(argument))?;
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separator = " & "
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}
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write!(format, ")")?;
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},
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foliage::Formula::Or(arguments) =>
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{
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write!(format, "(")?;
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let mut separator = "";
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assert!(!arguments.is_empty());
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for argument in arguments
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{
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write!(format, "{}{:?}", separator, display_formula(argument))?;
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separator = " | "
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}
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write!(format, ")")?;
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},
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foliage::Formula::Implies(foliage::Implies{antecedent, implication})
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=> write!(format, "({:?} => {:?})", display_formula(antecedent), display_formula(implication))?,
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foliage::Formula::IfAndOnlyIf(foliage::IfAndOnlyIf{left, right})
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=> write!(format, "({:?} <=> {:?})", display_formula(left), display_formula(right))?,
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foliage::Formula::Compare(foliage::Compare{operator: foliage::ComparisonOperator::Less, left, right})
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=> write!(format, "$less({:?}, {:?})", display_term(left), display_term(right))?,
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foliage::Formula::Compare(foliage::Compare{operator: foliage::ComparisonOperator::LessOrEqual, left, right})
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=> write!(format, "$lesseq({:?}, {:?})", display_term(left), display_term(right))?,
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foliage::Formula::Compare(foliage::Compare{operator: foliage::ComparisonOperator::Greater, left, right})
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=> write!(format, "$greater({:?}, {:?})", display_term(left), display_term(right))?,
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foliage::Formula::Compare(foliage::Compare{operator: foliage::ComparisonOperator::GreaterOrEqual, left, right})
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=> write!(format, "$greatereq({:?}, {:?})", display_term(left), display_term(right))?,
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foliage::Formula::Compare(foliage::Compare{operator: foliage::ComparisonOperator::Equal, left, right})
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=> write!(format, "({:?} = {:?})", display_term(left), display_term(right))?,
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foliage::Formula::Compare(foliage::Compare{operator: foliage::ComparisonOperator::NotEqual, left, right})
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=> write!(format, "({:?} ~= {:?})", display_term(left), display_term(right))?,
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foliage::Formula::Boolean(true) => write!(format, "$true")?,
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foliage::Formula::Boolean(false) => write!(format, "$false")?,
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foliage::Formula::Predicate(predicate) =>
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{
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write!(format, "{}", predicate.declaration.name)?;
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if !predicate.arguments.is_empty()
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{
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write!(format, "(")?;
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let mut separator = "";
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for argument in &predicate.arguments
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{
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write!(format, "{}{:?}", separator, display_term(argument))?;
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separator = ", "
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}
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write!(format, ")")?;
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}
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},
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}
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Ok(())
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}
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}
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impl<'formula> std::fmt::Display for FormulaDisplay<'formula>
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{
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fn fmt(&self, format: &mut std::fmt::Formatter) -> std::fmt::Result
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{
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write!(format, "{:?}", self)
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}
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}
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