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

Interface SourcePositions

All Known Subinterfaces:
DocSourcePositions
public interface SourcePositions
Provides methods to obtain the position of a Tree within a CompilationUnit. A position is defined as a simple character offset from the start of a CompilationUnit where the first character is at offset 0.
Since:
1.6

  • Method Details

    • getStartPosition

      long getStartPosition​(CompilationUnitTree file, Tree tree)
      Returns the starting position of tree within file. If tree is not found within file, or if the starting position is not available, returns Diagnostic.NOPOS. The returned position must be at the start of the yield of this tree, that is for any sub-tree of this tree, the following must hold:

      tree.getStartPosition() <= subtree.getStartPosition() or
      tree.getStartPosition() == NOPOS or
      subtree.getStartPosition() == NOPOS

      Parameters:
      file - CompilationUnit in which to find tree
      tree - tree for which a position is sought
      Returns:
      the start position of tree

    • getEndPosition

      long getEndPosition​(CompilationUnitTree file, Tree tree)
      Returns the ending position of tree within file. If tree is not found within file, or if the ending position is not available, returns Diagnostic.NOPOS. The returned position must be at the end of the yield of this tree, that is for any sub-tree of this tree, the following must hold:

      tree.getEndPosition() >= subtree.getEndPosition() or
      tree.getEndPosition() == NOPOS or
      subtree.getEndPosition() == NOPOS

      In addition, the following must hold:

      tree.getStartPosition() <= tree.getEndPosition() or
      tree.getStartPosition() == NOPOS or
      tree.getEndPosition() == NOPOS

      Parameters:
      file - CompilationUnit in which to find tree
      tree - tree for which a position is sought
      Returns:
      the end position of tree