flash.tools.debugger.expression

Class ASTBuilder

java.lang.Object

flash.tools.debugger.expression.ASTBuilder

All Implemented Interfaces:

IASTBuilder

public class ASTBuilder
extends Object
implements IASTBuilder

ASTBuilder.java This class creates an abstract syntax tree representation of an expression given a sequence of tokens. The tree is built by calling the ActionScript compiler and having it parse the expression, then converting the result to a form we prefer. No compression is performed on the tree, thus expressions such as (3*4) will result in 3 nodes.

Constructor Summary

Constructors

Constructor and Description
ASTBuilder(boolean isIndirectionOperatorAllowed)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	isIndirectionOperatorAllowed()
ValueExp	parse(Reader in) A parser that should do a fairly good job at parsing a general expression string.

Methods inherited from class java.lang.Object

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

Constructor Detail

ASTBuilder

public ASTBuilder(boolean isIndirectionOperatorAllowed)

Parameters:

isIndirectionOperatorAllowed - whether the fdb indirection operators are allowed, e.g. asterisk (*x) or trailing dot (x.)

Method Detail

isIndirectionOperatorAllowed

public boolean isIndirectionOperatorAllowed()

Returns:

whether the fdb indirection operators are allowed, e.g. asterisk (*x) or trailing dot (x.)

parse

public ValueExp parse(Reader in)
               throws IOException,
                      ParseException

Description copied from interface: IASTBuilder

A parser that should do a fairly good job at parsing a general expression string. Exceptions: ParseException - a general parsing error occurred.

Specified by:

parse in interface IASTBuilder

Throws:

IOException

ParseException