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Code Issues 15 Releases 21 Activity

Support exponentiation operator

Browse Source 
Because of a bug in the Clingo API, the exponentation operator was not
properly exposed to anthem. This updates Clingo to a version with a
fixed API and adds proper support for exponentation within anthem along
with a matching unit test.
This commit is contained in:
Patrick Lühne
2018-04-09 00:07:47 +02:00
parent 7b6729acaa
commit eaabeb0c55
5 changed files with 22 additions and 5 deletions
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3
include/anthem/AST.h
View File

@@ -32,7 +32,8 @@ struct BinaryOperation
Minus,
Multiplication,
Division,
Modulo
Modulo,
Power
};
explicit BinaryOperation(Operator operator_, Term &&left, Term &&right)

12
include/anthem/Term.h
View File

@@ -23,6 +23,12 @@ ast::BinaryOperation::Operator translate(Clingo::AST::BinaryOperator binaryOpera
{
switch (binaryOperator)
{
case Clingo::AST::BinaryOperator::XOr:
throw TranslationException(term.location, "binary operation “xor” currently unsupported");
case Clingo::AST::BinaryOperator::Or:
throw TranslationException(term.location, "binary operation “or” currently unsupported");
case Clingo::AST::BinaryOperator::And:
throw TranslationException(term.location, "binary operation “and” currently unsupported");
case Clingo::AST::BinaryOperator::Plus:
return ast::BinaryOperation::Operator::Plus;
case Clingo::AST::BinaryOperator::Minus:
@@ -33,11 +39,11 @@ ast::BinaryOperation::Operator translate(Clingo::AST::BinaryOperator binaryOpera
return ast::BinaryOperation::Operator::Division;
case Clingo::AST::BinaryOperator::Modulo:
return ast::BinaryOperation::Operator::Modulo;
default:
throw TranslationException(term.location, "“binary operation” terms currently unsupported");
case Clingo::AST::BinaryOperator::Power:
return ast::BinaryOperation::Operator::Power;
}
return ast::BinaryOperation::Operator::Plus;
throw TranslationException(term.location, "unknown binary operation");
}
////////////////////////////////////////////////////////////////////////////////////////////////////

2
include/anthem/output/AST.h
View File

@@ -85,6 +85,8 @@ inline output::ColorStream &print(output::ColorStream &stream, BinaryOperation::
return (stream << output::Operator("/"));
case BinaryOperation::Operator::Modulo:
return (stream << output::Operator("%"));
case BinaryOperation::Operator::Power:
return (stream << output::Operator("**"));
}
return stream;