refactor: refactor EnumsMigration but not finished

Assets/CodeGen/EnumsMigration/EnumsAnalyzer/DefinesWalker.java

@@ -0,0 +1,72 @@
+
+import org.antlr.v4.runtime.*;
+
+/**
+ * The generic walker for collecting defines as a enum.
+ */
+public class DefinesWalker extends CKDefinesParserBaseListener {
+	public DefinesWalker(BufferedTokenStream tokenStream) {
+		mCommentsFinder = new CommentsFinder(tokenStream);
+		mResult = null;
+
+		mCurrentEnum = null;
+		mCurrentEntry = null;
+	}
+	
+	public EnumsHelper.BEnum getEnum() {
+		return mResult;
+	}
+	
+	private CommentsFinder mCommentsFinder;
+	private EnumsHelper.BEnum mResult;
+
+	private EnumsHelper.BEnum mCurrentEnum;
+	private EnumsHelper.BEnumEntry mCurrentEntry;
+	
+	@Override
+	public void enterProg(CKDefinesParser.ProgContext ctx) {
+		mCurrentEnum = new EnumsHelper.BEnum();
+	}
+
+	@Override
+	public void exitProg(CKDefinesParser.ProgContext ctx) {
+		mResult = mCurrentEnum;
+		mCurrentEnum = null;
+	}
+
+	@Override
+	public void enterDefinePair(CKDefinesParser.DefinePairContext ctx) {
+		mCurrentEntry = new EnumsHelper.BEnumEntry();
+	}
+
+	@Override
+	public void exitDefinePair(CKDefinesParser.DefinePairContext ctx) {
+		// set values
+		mCurrentEntry.mEntryName = ctx.CKGENERAL_ID(0).getText();
+		mCurrentEntry.mEntryComment = mCommentsFinder.getComment(ctx.getStart(), ctx.getStop());
+		
+		if (ctx.CKGENERAL_NUM() == null) {
+			// define with id
+			mCurrentEntry.mEntryValue = ctx.CKGENERAL_ID(1).getText();
+			
+		} else {
+			// define with number
+			String num = ctx.CKGENERAL_NUM().getText();
+			mCurrentEntry.mEntryValue = num;
+
+			// check whether this enum can be unsigned
+			if (CommonHelper.isNegativeNumber(num)) {
+				mCurrentEnum.mCanUnsigned = false;
+			}
+			// if the number is in hex form, this enum MIGHT have flags feature
+			if (CommonHelper.isHexNumber(num)) {
+				mCurrentEnum.mUseFlags = true;
+			}
+
+		}
+		// add entry
+		mCurrentEnum.mEntries.add(mCurrentEntry);
+		mCurrentEntry = null;
+	}
+	
+}