ODL-Sprachkonstrukte und interaktive Benutzerschnittstelle - TUM

142 ANHANG B: ODL-GRAMMATIKpre_relation ::= relation_ident ( arguments )relation_ident ::= identpost_relation ::= result relation_ident ( arguments ) |result not relation_ident ( arguments )set_is_empty ::= isEmpty( expression )arguments ::= argumentlist |argumentlist ::= argument , argumentlist |argumentargument ::= expressionexpression ::= functional_expression |selector_expression |arithmetic_expression |primitive_expressionfunctional_expression ::= function_ident( arguments )function_ident ::= identselector_expression ::= variable . selectionselection ::= selector . selection |selectorselector ::= identprimitive_expression ::= constant |variableconstant ::= bool_constant |int_constant |string_constantvariable ::= identcomparison_expression ::= expression comparison_operator expressioncomparison_operator ::= = |< |≤ |> |≥arithmetic_expression ::= factor |