Module jdk.compiler
Package com.sun.source.tree

Interface LineMap

public interface LineMap
Provides methods to convert between character positions and line numbers for a compilation unit.
Since:
1.6

  • Method Summary

    Modifier and Type
    Method
    Description
    long
    getColumnNumber(long pos)
    Finds the column for a character position.
    long
    getLineNumber(long pos)
    Finds the line containing a position; a line termination character is on the line it terminates.
    long
    getPosition(long line, long column)
    Finds the position corresponding to a (line,column).
    long
    getStartPosition(long line)
    Finds the start position of a line.

  • Method Details

    • getStartPosition

      long getStartPosition(long line)
      Finds the start position of a line.
      Parameters:
      line - line number (beginning at 1)
      Returns:
      position of first character in line
      Throws:
      IndexOutOfBoundsException - if lineNumber < 1 if lineNumber > no. of lines

    • getPosition

      long getPosition(long line, long column)
      Finds the position corresponding to a (line,column).
      Parameters:
      line - line number (beginning at 1)
      column - tab-expanded column number (beginning 1)
      Returns:
      position of character
      Throws:
      IndexOutOfBoundsException - if line < 1 if line > no. of lines

    • getLineNumber

      long getLineNumber(long pos)
      Finds the line containing a position; a line termination character is on the line it terminates.
      Parameters:
      pos - character offset of the position
      Returns:
      the line number of pos (first line is 1)

    • getColumnNumber

      long getColumnNumber(long pos)
      Finds the column for a character position. Tab characters preceding the position on the same line will be expanded when calculating the column number.
      Parameters:
      pos - character offset of the position
      Returns:
      the tab-expanded column number of pos (first column is 1)