class Analyser extends AnyRef

Analyses for typed lambda calculus expressions. A simple free variable analysis plus name and type analysis. There are two versions of the latter here: one (tipe) that constructs an explicit environment separate from the AST, and one (tipe2) that represents names by references to the nodes of their binding lambda expressions.

Source
Analyser.scala
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Instance Constructors

  1. new Analyser()

Value Members

  1. final def !=(arg0: Any): Boolean
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  2. final def ##(): Int
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  3. final def ==(arg0: Any): Boolean
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  4. final def asInstanceOf[T0]: T0
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  5. def checkType(e: Exp, tipe: (Exp) ⇒ Type): Messages

    Check that the type of e is its expected type or unknown.

    Check that the type of e is its expected type or unknown. If not, return an error. tipe is used to obtain the type.

  6. def clone(): AnyRef
    Attributes
    protected[java.lang]
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    @throws( ... )
  7. def decl: (Var) ⇒ Option[Lam]

    The declaration (if any) of an identifier use.

  8. val env: (Exp) ⇒ Seq[(Idn, Type)]

    The environment of an expression is the list of variable names that are visible in that expression and their types.

  9. final def eq(arg0: AnyRef): Boolean
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  10. def equals(arg0: Any): Boolean
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  11. val errors: (Exp) ⇒ Messages

    The semantic error messages for a given tree.

    The semantic error messages for a given tree. This one uses the tipe attribute.

  12. val errors2: (Exp) ⇒ Messages

    The semantic error messages for a given tree.

    The semantic error messages for a given tree. This one uses the tipe2 attribute.

  13. val exptipe: (Exp) ⇒ Type

    The expected type of an expression.

  14. def finalize(): Unit
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    @throws( classOf[java.lang.Throwable] )
  15. val fv: (Exp) ⇒ Set[Idn]

    The variables that are free in the given expression.

  16. final def getClass(): Class[_]
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  17. def hashCode(): Int
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  18. final def isInstanceOf[T0]: Boolean
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  19. def lookup(name: Idn): (Exp) ⇒ Option[Lam]

    For a given variable reference, return the lambda node that binds it if there is one, otherwise return None.

  20. final def ne(arg0: AnyRef): Boolean
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  21. final def notify(): Unit
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  22. final def notifyAll(): Unit
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  23. final def synchronized[T0](arg0: ⇒ T0): T0
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  24. val tipe: (Exp) ⇒ Type

    The type of an expression.

    The type of an expression. Checks constituent names and types. Uses the env attribute to get the bound variables and their types.

  25. val tipe2: (Exp) ⇒ Type

    The type of an expression.

    The type of an expression. Checks constituent names and types. Uses the lookup attribute to get the lambda node that binds a name. For other cases it behaves like tipe.

  26. def toString(): String
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  27. final def wait(): Unit
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  28. final def wait(arg0: Long, arg1: Int): Unit
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  29. final def wait(arg0: Long): Unit
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