Class IdNode

Object
  ASTNode
      ExprNode
          IdNode

public class IdNode
extends ExprNode

An AST node representing an identifier.

Nested Class Summary

Nested classes/interfaces inherited from class ASTNode

ASTNode.Opcode

Field Summary

Fields inherited from class ExprNode

column, line, type

Constructor Summary

IdNode(String name, int line, int column)
Creates a new IdNode.

Method Summary

String	getAddress() Generates a SPIM address for this id, either "_id" or "-nnn($fp)" depending on this id's offset.
String	getName() Returns the string name of this identifier.
Symbol	getSymbol() Returns the Symbol bound to this identifier.
void	resolveNames(SymbolTable symtab) Resolves all applied uses of identifiers in the tree rooted at this node.
void	resolveTypes(ProcDeclNode proc) Fills in types for all Symbols bound to IdNodes.
void	unparse(PrintWriter p, int level) Prints a source representation of the tree rooted at this node on output stream p.

Methods inherited from class ExprNode

codeGen, codeGen

Methods inherited from class ASTNode

indent, toString

Methods inherited from class Object

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

Constructor Detail

IdNode

public IdNode(String name,
              int line,
              int column)

Creates a new IdNode.

Parameters:

name - the name of the identifier.

line - the line on which this identifier appears.

column - the column of the first character of this identifier.

Method Detail

getSymbol

public Symbol getSymbol()

Returns the Symbol bound to this identifier.

Returns:

the symbol.

getName

public String getName()

Returns the string name of this identifier.

Returns:

the name.

unparse

public void unparse(PrintWriter p,
                    int level)

Prints a source representation of the tree rooted at this node on output stream p.

Specified by:

unparse in class ASTNode

Parameters:

p - the place to display the output.

level - the number of levels of indentation to use if the output requires more than one line.

resolveNames

public void resolveNames(SymbolTable symtab)

Resolves all applied uses of identifiers in the tree rooted at this node.

Specified by:

resolveNames in class ASTNode

Parameters:

symtab - the symbol table to be used.

resolveTypes

public void resolveTypes(ProcDeclNode proc)

Fills in types for all Symbols bound to IdNodes. Prints error messages as necessary.

Specified by:

resolveTypes in class ASTNode

Parameters:

proc - the smallest enclosing procedure or function declaration.

getAddress

public String getAddress()

Generates a SPIM address for this id, either "_id" or "-nnn($fp)" depending on this id's offset.

Returns:

the address