org.grothoff
Class LineNumberInfo

java.lang.Object
  org.grothoff.LineNumberInfo

public class LineNumberInfo

extends java.lang.Object

Obtain line number information for any JTB node. Note that "any" really means any -- we use reflection to overcome the problem that we do not know the full name of the AST root (in particular, there maybe multiple AST hierarchies in the project with multiple root "Node" classes). Essentially, pass a JTB node to the static "get" method and (if it is a JTB node and there is source corresponding to it), a LineNumberInfo object with the scope of the subtree is returned. Otherwise null. Minimal example: void semanticError(String message, Node n) { throw new Error(message + " at " + LineNumberInfo.get(n)); }

Field Summary

int	colEnd
int	colStart
int	lineEnd
int	lineStart

Method Summary

static LineNumberInfo	get(java.lang.Object o) Compute line number information for the given JTB node.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

lineStart

public final int lineStart

lineEnd

public final int lineEnd

colStart

public final int colStart

colEnd

public final int colEnd

Method Detail

toString

public java.lang.String toString()

get

public static LineNumberInfo get(java.lang.Object o)

Compute line number information for the given JTB node.

Parameters:

o - any JTB node (the type should be node, but since this code handles any JTB AST we cannot hardwire the type ("Node" -- but which package?)

Returns: