avrora.core.isdl.ast
Class DeclStmt

java.lang.Object
  avrora.core.isdl.ast.Stmt
      avrora.core.isdl.ast.DeclStmt

public class DeclStmt

extends Stmt

The DeclStmt represents a declaration of a local, temporary value in the IR. A named temporary is given a type and an initial value at declaration time, allowing typechecking and ensuring that every variable is initialized before it is used.

Field Summary

Expr	init The init field stores a reference to the expression which is evaluated to give an initial value to the local.
Token	name The name field stores a reference to the name of the local.
Token	type The type field stores a reference to a token representing the type of the local.

Constructor Summary

DeclStmt(java.lang.String n, java.lang.String t, Expr i)
The constructor of the DeclStmt class initializes the references to the name, type, and initial value of the declared local.

DeclStmt(java.lang.String n, Token t, Expr i)
The constructor of the DeclStmt class initializes the references to the name, type, and initial value of the declared local.

DeclStmt(Token n, Token t, Expr i)
The constructor of the DeclStmt class initializes the references to the name, type, and initial value of the declared local.

Method Summary

Stmt	accept(StmtRebuilder r, java.lang.Object env) The accept() method implements one half of the visitor pattern for visiting the abstract syntax trees representing the code of a particular instruction or subroutine.
void	accept(StmtVisitor v) The accept() method implements one half of the visitor pattern for visiting the abstract syntax trees representing the code of a particular instruction or subroutine.
java.lang.String	toString() The toString() method recursively converts this statement to a string.

Methods inherited from class java.lang.Object

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

Field Detail

name

public final Token name

The name field stores a reference to the name of the local.

type

public final Token type

The type field stores a reference to a token representing the type of the local.

init

public final Expr init

The init field stores a reference to the expression which is evaluated to give an initial value to the local.

Constructor Detail

DeclStmt

public DeclStmt(Token n,
                Token t,
                Expr i)

The constructor of the DeclStmt class initializes the references to the name, type, and initial value of the declared local.

Parameters:

n - the name of the local as a token

t - the type of the local as a token

i - a reference to the expression evaluated to give the local an initial value

DeclStmt

public DeclStmt(java.lang.String n,
                Token t,
                Expr i)

The constructor of the DeclStmt class initializes the references to the name, type, and initial value of the declared local.

Parameters:

n - the name of the local as a string

t - the type of the local as a token

i - a reference to the expression evaluated to give the local an initial value

DeclStmt

public DeclStmt(java.lang.String n,
                java.lang.String t,
                Expr i)

The constructor of the DeclStmt class initializes the references to the name, type, and initial value of the declared local.

Parameters:

n - the name of the local as a string

t - the type of the local as a token

i - a reference to the expression evaluated to give the local an initial value

Method Detail

accept

public void accept(StmtVisitor v)

The accept() method implements one half of the visitor pattern for visiting the abstract syntax trees representing the code of a particular instruction or subroutine.

Specified by:

accept in class Stmt

Parameters:

v - the visitor to accept

toString

public java.lang.String toString()

The toString() method recursively converts this statement to a string.

Returns:

a string representation of this statement

accept

public Stmt accept(StmtRebuilder r,
                   java.lang.Object env)

The accept() method implements one half of the visitor pattern for visiting the abstract syntax trees representing the code of a particular instruction or subroutine. The StmtRebuilder interface allows visitors to rearrange and rebuild the statements.

Specified by:

accept in class Stmt

Parameters:

r - the visitor to accept

Returns:

the result of calling the appropriate visit() of the rebuilder passed