Class ASTNode

Object
  ASTNode

Direct Known Subclasses:

BlockNode, DeclNode, ExprNode, StmtNode

public abstract class ASTNode
extends Object

A node in an Abstract Syntax Tree for ada536.

Nested Class Summary

(package private) static class

ASTNode.Opcode Operator codes.

Constructor Summary

ASTNode()

Method Summary

protected void	indent(PrintWriter p, int level) A handy utility for generating a newline followed by the indentation for the next line.
abstract void	resolveNames(SymbolTable symtab) Resolves all applied uses of identifiers in the tree rooted at this node.
abstract void	resolveTypes(ProcDeclNode proc) Fills in types for all Symbols bound to IdNodes.
String	toString() Produces a string representation of this node, for debugging.
abstract 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 Object

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

Constructor Detail

ASTNode

public ASTNode()

Method Detail

unparse

public abstract void unparse(PrintWriter p,
                             int level)

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

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 abstract void resolveNames(SymbolTable symtab)

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

Parameters:

symtab - the symbol table to be used.

resolveTypes

public abstract void resolveTypes(ProcDeclNode proc)

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

Parameters:

proc - the smallest enclosing procedure or function declaration.

toString

public String toString()

Produces a string representation of this node, for debugging.

Overrides:

toString in class Object

Returns:

a String version of this node.

indent

protected void indent(PrintWriter p,
                      int level)

A handy utility for generating a newline followed by the indentation for the next line.

Parameters:

p - the place to display the output.

level - the number of levels to indent.