wyc.lang

Class Stmt.Assume

java.lang.Object

wybs.lang.SyntacticElement.Impl

wyc.lang.Stmt.Assume

All Implemented Interfaces:

wybs.lang.SyntacticElement, Stmt

Enclosing interface:

Stmt

public static final class Stmt.Assume
extends wybs.lang.SyntacticElement.Impl
implements Stmt

Represents an assume statement of the form assume e, where e is a boolean expression. The following illustrates:

 function abs(int x) -> int:
     if x < 0:
         x = -x
     assume x >= 0
     return x
 

Assumptions are assumed by the verifier and, since this may be unsound, always turned into runtime checks.

Author:

David J. Pearce

Nested Class Summary

Nested classes/interfaces inherited from interface wyc.lang.Stmt

Stmt.Assert, Stmt.Assign, Stmt.Assume, Stmt.Break, Stmt.Case, Stmt.Continue, Stmt.Debug, Stmt.DoWhile, Stmt.Fail, Stmt.IfElse, Stmt.NamedBlock, Stmt.Return, Stmt.Skip, Stmt.Switch, Stmt.VariableDeclaration, Stmt.While

Nested classes/interfaces inherited from interface wybs.lang.SyntacticElement

wybs.lang.SyntacticElement.Impl

Field Summary

Fields

Modifier and Type	Field and Description
Expr	expr

Constructor Summary

Constructors

Constructor and Description
Assume(Expr expr, wybs.lang.Attribute... attributes) Create a given assume statement.
Assume(String msg, Expr expr, Collection<wybs.lang.Attribute> attributes) Create a given assume statement.

Method Summary

Methods inherited from class wybs.lang.SyntacticElement.Impl

attribute, attributes

Methods inherited from class java.lang.Object

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

Methods inherited from interface wybs.lang.SyntacticElement

attribute, attributes

Field Detail

expr

public Expr expr

Constructor Detail

Assume

public Assume(Expr expr,
              wybs.lang.Attribute... attributes)

Create a given assume statement.

Parameters:

expr - the assumed condition, which may not be null.

attributes -

Assume

public Assume(String msg,
              Expr expr,
              Collection<wybs.lang.Attribute> attributes)

Create a given assume statement.

Parameters:

expr - the assumed condition, which may not be null.

attributes -