com.sun.tools.javac.util
Class DiagnosticSource

java.lang.Object
  com.sun.tools.javac.util.DiagnosticSource

public class DiagnosticSource
extends java.lang.Object

A simple abstraction of a source file, as needed for use in a diagnostic message. Provides access to the line and position in a line for any given character offset.

This is NOT part of any API supported by Sun Microsystems. If you write code that depends on this, you do so at your own risk. This code and its internal interfaces are subject to change or deletion without notice.

Field Summary

protected char[]	buf A temporary hard reference to the content of the file object.
protected int	bufLen The length of the content.
protected java.util.Map<JCTree,java.lang.Integer>	endPosTable
protected JavaFileObject	fileObject The underlying file object.
protected int	line The line number of a line found by findLine.
protected int	lineStart The start of a line found by findLine.
protected AbstractLog	log A log for reporting errors, such as errors accessing the content.
protected java.lang.ref.SoftReference<char[]>	refBuf A soft reference to the content of the file object.

Constructor Summary

DiagnosticSource(JavaFileObject fo, AbstractLog log)

Method Summary

private boolean	findLine(int pos) Find the line in the buffer that contains the current position
int	getColumnNumber(int pos, boolean expandTabs) Return the one-based column number associated with a given pos for the current source file.
java.util.Map<JCTree,java.lang.Integer>	getEndPosTable()
JavaFileObject	getFile() Return the underlying file object handled by this DiagnosticSource object.
java.lang.String	getLine(int pos) Return the content of the line containing a given pos.
int	getLineNumber(int pos) Return the one-based line number associated with a given pos for the current source file.
java.lang.CharSequence	getName()
protected char[]	initBuf(JavaFileObject fileObject)
void	setEndPosTable(java.util.Map<JCTree,java.lang.Integer> t)

Methods inherited from class java.lang.Object

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

Field Detail

fileObject

protected JavaFileObject fileObject

The underlying file object.

endPosTable

protected java.util.Map<JCTree,java.lang.Integer> endPosTable

refBuf

protected java.lang.ref.SoftReference<char[]> refBuf

A soft reference to the content of the file object.

buf

protected char[] buf

A temporary hard reference to the content of the file object.

bufLen

protected int bufLen

The length of the content.

lineStart

protected int lineStart

The start of a line found by findLine.

line

protected int line

The line number of a line found by findLine.

log

protected AbstractLog log

A log for reporting errors, such as errors accessing the content.

Constructor Detail

DiagnosticSource

public DiagnosticSource(JavaFileObject fo,
                        AbstractLog log)

Method Detail

getFile

public JavaFileObject getFile()

Return the underlying file object handled by this DiagnosticSource object.

getName

public java.lang.CharSequence getName()

getLineNumber

public int getLineNumber(int pos)

Return the one-based line number associated with a given pos for the current source file. Zero is returned if no line exists for the given position.

getColumnNumber

public int getColumnNumber(int pos,
                           boolean expandTabs)

Return the one-based column number associated with a given pos for the current source file. Zero is returned if no column exists for the given position.

getLine

public java.lang.String getLine(int pos)

Return the content of the line containing a given pos.

getEndPosTable

public java.util.Map<JCTree,java.lang.Integer> getEndPosTable()

setEndPosTable

public void setEndPosTable(java.util.Map<JCTree,java.lang.Integer> t)

findLine

private boolean findLine(int pos)

Find the line in the buffer that contains the current position

Parameters:

pos - Character offset into the buffer

initBuf

protected char[] initBuf(JavaFileObject fileObject)
                  throws java.io.IOException

Throws:

java.io.IOException