coins.ast.expr
Interface LvalueExpr

All Superinterfaces:

Expr

All Known Implementing Classes:

ArrayExpr, CommaExpr, ConditionalExpr, DereferenceExpr, MemberExpr, StringLiteral, VariableExpr

public interface LvalueExpr

extends Expr

Expression that may be an l-value.

Suppose that an expression is VariableExpr. If the expression represents an int variable, it is an l-value. However, if it represents an array name, then it is not an l-value. For example,

int a[10];
 a = ... ;       // a is not an l-value.
 a[0] = ... ;    // a[0] is an l-value.
 

Even if the class of an expression implements LvalueExpr, that expression may not be an l-value. isLvalue() returns true only if that expression is really an l-value.

Method Summary

boolean	hasAddress() Returns true if the expression can be an operand of '&'.
boolean	isLvalue() Returns true if the expression is really an l-value.

Methods inherited from interface coins.ast.Expr

getType

Method Detail

isLvalue

public boolean isLvalue()

Returns true if the expression is really an l-value.

hasAddress

public boolean hasAddress()

Returns true if the expression can be an operand of '&'.