hlt.language.design.kernel

Class Loop

java.lang.Object

hlt.language.design.kernel.Expression

hlt.language.design.kernel.Loop

All Implemented Interfaces:

Locatable

public class Loop
extends Expression

This class is the class of conditional looping expressions.

Field Summary

Fields inherited from class hlt.language.design.kernel.Expression

VOID_ASSIGNMENTS

Constructor Summary

Constructors

Constructor and Description
Loop(Expression condition, Expression body) Constructs a loop with the specified condition and body.

Method Summary

Methods

Modifier and Type	Method and Description
Type	checkedType() The checked type of a loop is its type.
void	compile(Compiler compiler) Compiles this loop expression in the context of the specified Compiler.
Expression	copy() Returns a deep copy of this expression.
int	numberOfSubexpressions() Returns the number of subexpressions
void	setCheckedType() Sets the checked type of the condition and body.
void	setCheckedType(Type type) No-op...
Expression	setSubexpression(int n, Expression expression) Returns this expression after setting its n-th subexpression to the specified expression; if there is no subexpression at the given position, this throws a NoSuchSubexpressionException
void	setType(Type type) This method forcibly sets this expression's type field, if it has one, to the specified type.
Expression	subexpression(int n) Returns the n-th subexpression of this expression; if there is no subexpression at the given position, this throws a NoSuchSubexpressionException
java.lang.String	toString()
Type	type() The type of a loop is void.
void	typeCheck(TypeChecker typeChecker) Type-checks this loop in the context of the specified TypeChecker.
Expression	typedCopy() Returns a deep copy of this expression this and all its subexpressions share the same type as their copy's counterparts.
Type	typeRef() The type reference of a loop is its type.

Methods inherited from class hlt.language.design.kernel.Expression

addType, addTypes, boxSort, containsFreeName, enclosingScope, extent, getEnd, getStart, isConstant, isEquality, isFalse, isHiddenSlicing, isNull, isSelector, isSlicing, isTrue, isVoid, locationString, otherTypes, parameters, sanitizeNames, sanitizeSorts, setCheckedTypeLocked, setEnd, setExtent, setOtherTypes, setStart, shiftOffsets, shiftOffsets, sort, substitute, typeCheck, typeCheck, typeCheckLocked

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Loop

public Loop(Expression condition,
    Expression body)

Constructs a loop with the specified condition and body.

Method Detail

copy

public final Expression copy()

Description copied from class: Expression

Returns a deep copy of this expression. The types are not not copied. NB: This is a convenience for building expressions that should be used exclusively before any processing (in particular sanitizing), is done on this expression.

Specified by:

copy in class Expression

typedCopy

public final Expression typedCopy()

Description copied from class: Expression

Returns a deep copy of this expression this and all its subexpressions share the same type as their copy's counterparts. NB: This is a convenience for building expressions that should be used exclusively before any processing (in particular sanitizing), is done on this expression.

Specified by:

typedCopy in class Expression

numberOfSubexpressions

public final int numberOfSubexpressions()

Description copied from class: Expression

Returns the number of subexpressions

Overrides:

numberOfSubexpressions in class Expression

subexpression

public final Expression subexpression(int n)
                               throws NoSuchSubexpressionException

Description copied from class: Expression

Returns the n-th subexpression of this expression; if there is no subexpression at the given position, this throws a NoSuchSubexpressionException

Overrides:

subexpression in class Expression

Throws:

NoSuchSubexpressionException

setSubexpression

public final Expression setSubexpression(int n,
                          Expression expression)
                                  throws NoSuchSubexpressionException

Description copied from class: Expression

Returns this expression after setting its n-th subexpression to the specified expression; if there is no subexpression at the given position, this throws a NoSuchSubexpressionException

Overrides:

setSubexpression in class Expression

Throws:

NoSuchSubexpressionException

type

public final Type type()

The type of a loop is void.

Specified by:

type in class Expression

setType

public final void setType(Type type)

Description copied from class: Expression

This method forcibly sets this expression's type field, if it has one, to the specified type. It will be an empty method otherwise.

Specified by:

setType in class Expression

typeRef

public final Type typeRef()

The type reference of a loop is its type.

Specified by:

typeRef in class Expression

checkedType

public final Type checkedType()

The checked type of a loop is its type.

Specified by:

checkedType in class Expression

setCheckedType

public final void setCheckedType()

Sets the checked type of the condition and body.

Specified by:

setCheckedType in class Expression

setCheckedType

public final void setCheckedType(Type type)

No-op...

Specified by:

setCheckedType in class Expression

typeCheck

public final void typeCheck(TypeChecker typeChecker)
                     throws TypingErrorException

Type-checks this loop in the context of the specified TypeChecker.

Specified by:

typeCheck in class Expression

Throws:

TypingErrorException

compile

public final void compile(Compiler compiler)

Compiles this loop expression in the context of the specified Compiler.

Specified by:

compile in class Expression

toString

public final java.lang.String toString()

Overrides:

toString in class java.lang.Object