import com.sun.tools.apt.mirror.util.SourcePositionImpl; //导入依赖的package包/类
/**
 * {@inheritDoc}
 */
public void printError(SourcePosition pos, String msg) {
    if (pos instanceof SourcePositionImpl) {
        SourcePositionImpl posImpl = (SourcePositionImpl) pos;
        JavaFileObject prev = bark.useSource(posImpl.getSource());
        bark.aptError(posImpl.getJavacPosition(), "Messager", msg);
        bark.useSource(prev);
    } else
        printError(msg);
}
 

import com.sun.tools.apt.mirror.util.SourcePositionImpl; //导入依赖的package包/类
/**
 * {@inheritDoc}
 */
public void printWarning(SourcePosition pos, String msg) {
    if (pos instanceof SourcePositionImpl) {
        SourcePositionImpl posImpl = (SourcePositionImpl) pos;
        JavaFileObject prev = bark.useSource(posImpl.getSource());
        bark.aptWarning(posImpl.getJavacPosition(), "Messager", msg);
        bark.useSource(prev);
    } else
        printWarning(msg);
}
 

import com.sun.tools.apt.mirror.util.SourcePositionImpl; //导入依赖的package包/类
/**
 * {@inheritDoc}
 */
public void printNotice(SourcePosition pos, String msg) {
    if (pos instanceof SourcePositionImpl) {
        SourcePositionImpl posImpl = (SourcePositionImpl) pos;
        JavaFileObject prev = bark.useSource(posImpl.getSource());
        bark.aptNote(posImpl.getJavacPosition(), "Messager", msg);
        bark.useSource(prev);
    } else
        printNotice(msg);
}
 

import com.sun.tools.apt.mirror.util.SourcePositionImpl; //导入依赖的package包/类
/**
 * {@inheritDoc}
 */
public SourcePosition getPosition() {
    // Find the toplevel.  From there use a tree-walking utility
    // that finds the tree for our symbol, and with it the position.
    Env<AttrContext> enterEnv = getEnterEnv();
    if (enterEnv == null)
        return null;
    JCTree.JCCompilationUnit toplevel = enterEnv.toplevel;
    JavaFileObject sourcefile = toplevel.sourcefile;
    if (sourcefile == null)
        return null;
    int pos = TreeInfo.positionFor(sym, toplevel);

    return new SourcePositionImpl(sourcefile, pos, toplevel.lineMap);
}