IT. Expert System.

Java Standard Edition (SE)

SourcePositions


com.sun.source.util

Interface SourcePositions

  • All Known Subinterfaces:
    DocSourcePositions


    @Exported
    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 Detail

      • getStartPosition

        long getStartPosition(CompilationUnitTree file,
                              Tree tree)
        Gets the starting position of tree within file. If tree is not found within file, or if the starting position is not available, return 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)
        Gets the ending position of tree within file. If tree is not found within file, or if the ending position is not available, return 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.


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