treeNodes
Class Program

java.lang.Object
  generalHelpers.TreeNode
      treeNodes.Program

public class Program
extends TreeNode

Defines AST constructor 'program'.

See TreeNode for full documentation.

Field Summary

protected ListNode<Class_>

classes

Fields inherited from class generalHelpers.TreeNode

lineNumber

Constructor Summary

Program(int lineNumber, ListNode<Class_> a1)
Creates "program" AST node.

Method Summary

void	cgen(java.io.PrintWriter s) This is the entry method for the code generation.
TreeNode	copy() Creates a copy of this node.
void	dump(java.io.Writer out, int n) Pretty-prints this node to this output stream.
void	dumpWithTypes(java.io.Writer out, int n)
ListNode<Class_>	getClasses()
void	semant() This method is the entry point to the semantic checker.

Methods inherited from class generalHelpers.TreeNode

copyAbstractSymbol, copyBoolean, dumpAbstractSymbol, dumpBoolean, dumpLine, getLineNumber, set

Methods inherited from class java.lang.Object

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

Field Detail

classes

protected ListNode<Class_> classes

Constructor Detail

Program

public Program(int lineNumber,
               ListNode<Class_> a1)

Creates "program" AST node.

Parameters:

lineNumber - the line in the source file from which this node came.

a0 - initial value for classes

Method Detail

getClasses

public ListNode<Class_> getClasses()

copy

public TreeNode copy()

Description copied from class: TreeNode

Creates a copy of this node.

Specified by:

copy in class TreeNode

Returns:

a copy of this node

dump

public void dump(java.io.Writer out,
                 int n)
          throws java.io.IOException

Description copied from class: TreeNode

Pretty-prints this node to this output stream.

Specified by:

dump in class TreeNode

Parameters:

out - the output stream

n - the number of spaces to indent the output

Throws:

java.io.IOException

dumpWithTypes

public void dumpWithTypes(java.io.Writer out,
                          int n)
                   throws java.io.IOException

Throws:

java.io.IOException

semant

public void semant()
            throws SemanticError

This method is the entry point to the semantic checker. You will need to complete it in programming assignment 4.

Your checker should do the following two things:

1. Check that the program is semantically correct
2. Decorate the abstract syntax tree with type information by setting the type field in each Expression node. (see the class AbstractExpression)

You are free to first do (1) and make sure you catch all semantic errors. Part (2) can be done in a second stage when you want to test the complete compiler.

Throws:

SemanticError - to signal error in semantic checking

cgen

public void cgen(java.io.PrintWriter s)

This is the entry method for the code generation.

Parameters:

s - -- writer to write the generated code to