orc.ast.oil
Class HasType

java.lang.Object
  orc.ast.oil.Expr
      orc.ast.oil.HasType

public class HasType
extends Expr

An expression with an ascribed type.

Author:

dkitchin

Field Summary

Expr	body
boolean	checkable
Type	type

Constructor Summary

HasType(Expr body, Type type, boolean checkable)

Method Summary

<E> E	accept(Visitor<E> visitor)
void	addIndices(java.util.Set<java.lang.Integer> indices, int depth) If this expression has any indices which are >= depth, add (index - depth) to the index set accumulator.
Node	compile(Node output) Compiles an oil syntax tree into an execution graph.
Type	typesynth(Env<Type> ctx, Env<Type> typectx)

Methods inherited from class orc.ast.oil.Expr

freeVars, typecheck

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

body

public Expr body

type

public Type type

checkable

public boolean checkable

Constructor Detail

HasType

public HasType(Expr body,
               Type type,
               boolean checkable)

Method Detail

accept

public <E> E accept(Visitor<E> visitor)

Specified by:

accept in class Expr

addIndices

public void addIndices(java.util.Set<java.lang.Integer> indices,
                       int depth)

Description copied from class: Expr

If this expression has any indices which are >= depth, add (index - depth) to the index set accumulator. The depth increases each time this method recurses through a binder. The default implementation is to assume the expression has no free variables, and thus do nothing. Expressions which contain variables or subexpressions override this behavior.

Specified by:

addIndices in class Expr

Parameters:

indices - The index set accumulator.

depth - The minimum index for a free variable.

compile

public Node compile(Node output)

Description copied from class: Expr

Compiles an oil syntax tree into an execution graph. Every node is compiled relative to an "output" node that represents the "rest of the program". Thus the tree of compiled nodes is created bottom up.

Specified by:

compile in class Expr

Parameters:

output - This is the node to which output (publications) will be directed.

Returns:

A new node.

typesynth

public Type typesynth(Env<Type> ctx,
                      Env<Type> typectx)
               throws TypeException

Specified by:

typesynth in class Expr

Throws:

TypeException