Type Members

1.  case class AndExp (left: Expression, right: Expression) extends Expression with Product with Serializable

   An expression whose value is the logical AND of the values of two expressions.

2.  case class ArrayVar (idn: IdnDef, size: Int) extends Declaration with Product with Serializable

   A declaration of an array variable of the given size.

3.  case class AssignStmt (left: AssignTree, right: Expression) extends Statement with Product with Serializable

   A statement that evaluates its second expression and assigns it to the variable or array element denoted by its first expression.

4.  trait AssignTree extends Expression with EntityTree

   Marker trait for all expression node types that can be assigned.

5.  case class BoolExp (value: Boolean) extends Expression with Product with Serializable

   An expression whose value is an Boolean constant.

6.  case class BoolVar (idn: IdnDef) extends Declaration with Product with Serializable

   A declaration of a Boolean variable.

7.  case class Catch (idn: IdnUse, stmts: Seq[Statement]) extends ObrTree with Product with Serializable
8.  sealed abstract class Declaration extends ObrTree with EntityTree

   Superclass of all declaration classes.

9.  trait EntityTree extends ObrTree

   Marker trait for all node types that have an entity.

10.  case class EnumConst (idn: IdnDef) extends ObrTree with EntityTree with Product with Serializable

    A declaration of an enumeration constant

11.  case class EnumVar (idn: IdnDef, consts: Seq[EnumConst]) extends Declaration with Product with Serializable

    A declaration of an enumeration variable with given enumeration constants.

12.  case class EqualExp (left: Expression, right: Expression) extends Expression with Product with Serializable

    An expression that compares the values of two expressions for equality.

13.  case class ExitStmt () extends Statement with Product with Serializable

    A statement that exits the nearest enclosing loop.

14.  case class ExnConst (idn: IdnDef) extends Declaration with Product with Serializable

    A declaration of a new exception value

15.  abstract class Expression extends ObrTree

    Superclass of all expression classes.

16.  case class FieldExp (idn: IdnUse, field: Identifier) extends Expression with AssignTree with Product with Serializable

    An expression that accesses a field of a record.

17.  case class ForStmt (idn: IdnUse, min: Expression, max: Expression, body: Seq[Statement]) extends Statement with EntityTree with Product with Serializable

    A statement that executes its body statements for each value of a variable in a range given by its two expressions.

18.  case class GreaterExp (left: Expression, right: Expression) extends Expression with Product with Serializable

    An expression that compares the values of two expressions for greater-than order.

19.  type Identifier = String

    A representation of identifiers as strings.

20.  case class IdnDef (idn: Identifier) extends IdnTree with Product with Serializable

    A defining occurrence of an identifier.

21.  case class IdnExp (idn: IdnUse) extends Expression with AssignTree with Product with Serializable

    An expression whose value is the current value of a named variable or constant.

22.  abstract class IdnTree extends ObrTree

    An identifier reference.

23.  case class IdnUse (idn: Identifier) extends IdnTree with Product with Serializable

    An applied occurrence (use) of an identifier.

24.  case class IfStmt (cond: Expression, thens: Seq[Statement], elses: Seq[Statement]) extends Statement with Product with Serializable

    A conditional statement that evaluates a Boolean expression and, if it is true, executes its first sequence of statements, and if its is false, executes its second sequence of statements.

25.  case class IndexExp (idn: IdnUse, indx: Expression) extends Expression with AssignTree with Product with Serializable

    An expression that indexes an array.

26.  case class IntConst (idn: IdnDef, value: Int) extends Declaration with Product with Serializable

    A declaration of an integer constant with the given value.

27.  case class IntExp (num: Int) extends Expression with Product with Serializable

    An expression whose value is an integer constant.

28.  case class IntParam (idn: IdnDef) extends Declaration with Product with Serializable

    A declaration of an integer parameter.

29.  case class IntVar (idn: IdnDef) extends Declaration with Product with Serializable

    A declaration of an integer variable.

30.  case class LessExp (left: Expression, right: Expression) extends Expression with Product with Serializable

    An expression that compares the values of two expressions for less-than order.

31.  case class LoopStmt (body: Seq[Statement]) extends Statement with Product with Serializable

    A loop that executes forever.

32.  case class MinusExp (left: Expression, right: Expression) extends Expression with Product with Serializable

    An expression whose value is the difference between the values of two expressions.

33.  case class ModExp (left: Expression, right: Expression) extends Expression with Product with Serializable

    An expression whose value is the modulus of its two expressions.

34.  case class NegExp (exp: Expression) extends Expression with Product with Serializable

    An expression whose value is the negation of the value of an expression.

35.  case class NotEqualExp (left: Expression, right: Expression) extends Expression with Product with Serializable

    An expression that compares the values of two expressions for inequality.

36.  case class NotExp (exp: Expression) extends Expression with Product with Serializable

    An expression whose value is the logical negation of the value of an expression.

37.  case class ObrInt (idn1: Identifier, decls: Seq[Declaration], stmts: Seq[Statement], idn2: Identifier) extends ObrTree with Product with Serializable

    An Obr program consisting of the given declarations and statements and returning an integer value.

    An Obr program consisting of the given declarations and statements and returning an integer value. The two identifiers name the program and must be the same.

38.  sealed abstract class ObrTree extends TreeNode

    Interface for all Obr tree nodes.

39.  case class OrExp (left: Expression, right: Expression) extends Expression with Product with Serializable

    An expression whose value is the logical OR of the values of two expressions.

40.  case class PlusExp (left: Expression, right: Expression) extends Expression with Product with Serializable

    An expression whose value is the sum of the values of two expressions.

41.  case class RaiseStmt (idn: IdnUse) extends Statement with Product with Serializable

    A statement that raises a specified exception.

42.  case class RecordVar (idn: IdnDef, fields: Seq[Identifier]) extends Declaration with Product with Serializable

    A declaration of a record variable with the given fields.

43.  case class ReturnStmt (value: Expression) extends Statement with Product with Serializable

    A statement that returns a value and terminates the program.

44.  case class SlashExp (left: Expression, right: Expression) extends Expression with Product with Serializable

    An expression whose value is the division of the values of two expressions.

45.  case class StarExp (left: Expression, right: Expression) extends Expression with Product with Serializable

    An expression whose value is the product of the values of two expressions.

46.  sealed abstract class Statement extends ObrTree

    Superclass of all statement classes.

47.  case class TryBody (stmts: Seq[Statement]) extends ObrTree with Product with Serializable
48.  case class TryStmt (body: TryBody, catches: Seq[Catch]) extends Statement with Product with Serializable

    A statement that is used to catch exception

49.  case class WhileStmt (cond: Expression, body: Seq[Statement]) extends Statement with Product with Serializable

    A statement that executes its body while its expression is true.