@Nullable
@Override
public Spacing getSpacing(@Nullable Block block, @NotNull Block block2) {
if (block != null) {
if (block instanceof SelBlock) {
if (((SelBlock) block).isNode()) {
return Spacing.createSpacing(0, 1, 1, true, 1);
}
}
if (block2 instanceof SelBlock) {
if (((SelBlock) block2).isNode()) {
return Spacing.createSpacing(0, 1, 1, true, 1);
}
}
}
return Spacing.createSafeSpacing(false, 0);
}
//
// Visitor generation methods
//
public void generateDepthFirstVisitor() throws FileExistsException {
try {
File file = new File(visitorDir, outFilename);
if (Globals.noOverwrite && file.exists()) throw new FileExistsException(outFilename);
PrintWriter out = new PrintWriter(new FileOutputStream(file), false);
Spacing spc = new Spacing(INDENT_AMT);
out.println(Globals.fileHeader(spc));
out.println();
out.println(spc.spc + "package " + Globals.visitorPackage + ";");
if (!Globals.visitorPackage.equals(Globals.nodePackage))
out.println(spc.spc + "import " + Globals.nodePackage + ".*;");
out.println(spc.spc + "import java.util.*;\n");
out.println(spc.spc + "/**");
out.println(
spc.spc
+ " * Provides default methods which visit each "
+ "node in the tree in depth-first");
out.println(spc.spc + " * order. Your visitors may extend this class.");
out.println(spc.spc + " */");
out.println(
spc.spc
+ "public class "
+ visitorName
+ "<R,A> implements "
+ Globals.GJVisitorName
+ "<R,A> {");
printAutoVisitorMethods(out);
spc.updateSpc(+1);
out.println(spc.spc + "//");
out.println(spc.spc + "// User-generated visitor methods below");
out.println(spc.spc + "//");
out.println();
for (Enumeration e = classList.elements(); e.hasMoreElements(); ) {
ClassInfo cur = (ClassInfo) e.nextElement();
String name = cur.getName();
out.println(spc.spc + "/**");
if (Globals.javaDocComments) out.println(spc.spc + " * <PRE>");
out.println(cur.getEbnfProduction(spc));
if (Globals.javaDocComments) out.println(spc.spc + " * </PRE>");
out.println(spc.spc + " */");
out.print(spc.spc + "public R visit");
out.println("(" + name + " n, A argu) {");
spc.updateSpc(+1);
out.println(spc.spc + "R _ret=null;");
for (Enumeration f = cur.getNameList().elements(); f.hasMoreElements(); )
out.println(spc.spc + "n." + (String) f.nextElement() + ".accept(this, argu);");
out.println(spc.spc + "return _ret;");
spc.updateSpc(-1);
out.println(spc.spc + "}\n");
}
spc.updateSpc(-1);
out.println(spc.spc + "}");
out.flush();
out.close();
} catch (IOException e) {
Errors.hardErr("Could not generate " + outFilename);
}
}
