ast
Class Expr

java.lang.Object
  ast.ASTNode
      ast.Expr

Direct Known Subclasses:

ArrayAssignExpr, ArrayExpr, AssignExpr, BinaryExpr, CastExpr, ConstExpr, DispatchExpr, InstanceofExpr, NewArrayExpr, NewExpr, UnaryExpr, VarExpr

public abstract class Expr
extends ASTNode

The abstract Expr class represents an expression that is is contained in either a statement, a field declaration, or another expression. An expression can be either a dispatch expression, a new expression, an assignment expression, a binary expression (comparison, arithmetic, or boolean logic), a unary expression (negation or complement), a variable expression, or a constant expression (int constant, boolean constant, String constant). An expression contains an expression type (exprType), which is set during semantic analysis.

See Also:

ASTNode, DispatchExpr, NewExpr, InstanceofExpr, CastExpr, AssignExpr, BinaryExpr, UnaryExpr, VarExpr, ConstExpr

Field Summary

Fields inherited from class ast.ASTNode

charNum, lineNum, lineStr

Constructor Summary

Expr(int lineNum)
Expr constructor

Method Summary

abstract java.lang.Object	accept(Visitor v) Visitor method
java.lang.String	getExprType() Get the type of the expression
void	setExprType(java.lang.String exprType) Set the type of the expression

Methods inherited from class ast.ASTNode

getLineNum

Methods inherited from class java.lang.Object

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

Constructor Detail

Expr

public Expr(int lineNum)

Expr constructor

Parameters:

lineNum - source line number corresponding to this AST node

Method Detail

getExprType

public java.lang.String getExprType()

Get the type of the expression

Returns:

the expression type

setExprType

public void setExprType(java.lang.String exprType)

Set the type of the expression

Parameters:

exprType - the type of the expression

accept

public abstract java.lang.Object accept(Visitor v)

Visitor method

Specified by:

accept in class ASTNode

Parameters:

v - visitor object

Returns:

result of visiting this node

See Also:

Visitor