Chomp kotlin suppress annotations

Closes gh-57

Author: philwebb

src/main/java/io/spring/asciidoctor/backend/codetools/ChompListingContentConverter.java

@@ -17,6 +17,7 @@
 package io.spring.asciidoctor.backend.codetools;
 
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -190,20 +191,35 @@ public String chomp(String content) {
 
 	private static class SuppressWarningsChomper implements Chomper {
 
+		private static final List<Pattern> PATTERNS;
+		static {
+			List<Pattern> patterns = new ArrayList<>();
+			patterns.add(Pattern.compile("@SuppressWarnings\\(.*\\)"));
+			patterns.add(Pattern.compile("@Suppress\\(.*\\)"));
+			PATTERNS = Collections.unmodifiableList(patterns);
+		}
+
 		@Override
 		public String chomp(String content) {
 			StringBuilder result = new StringBuilder(content.length());
 			String[] lines = content.split("\n");
 			for (String line : lines) {
-				String updatedline = line.replaceAll("@SuppressWarnings\\(.*\\)", "");
-				if (updatedline.equals(line) || !updatedline.trim().isEmpty()) {
-					result.append(updatedline);
+				String strippedline = strip(line);
+				if (strippedline.equals(line) || !strippedline.trim().isEmpty()) {
+					result.append(strippedline);
 					result.append("\n");
 				}
 			}
 			return result.toString();
 		}
 
+		private String strip(String line) {
+			for (Pattern pattern : PATTERNS) {
+				line = pattern.matcher(line).replaceAll("");
+			}
+			return line;
+		}
+
 	}
 
 }

src/main/java/io/spring/asciidoctor/backend/codetools/ChompOption.java

@@ -44,7 +44,7 @@ enum ChompOption {
 	FORMATTERS,
 
 	/**
-	 * Chomp {@code @SuppressWarnings} annotation.
+	 * Chomp {@code @SuppressWarnings} and {@code Suppress} annotations.
 	 */
 	SUPPRESSWARNINGS;
 

src/test/resources/io/spring/asciidoctor/backend/codetools/ChompListingContentConverterTests_convertWhenSuppressWarningsChompReturnsChompedLines.adoc

@@ -6,7 +6,10 @@
 public class Example {
 
 	@SuppressWarnings("unused")
-	private String field;
+	private String field1;
+
+	@Suppress("unused")
+	private String field2;
 
 }
 ----

src/test/resources/io/spring/asciidoctor/backend/codetools/ChompListingContentConverterTests_convertWhenSuppressWarningsChompReturnsChompedLines_expected.html

@@ -1,5 +1,7 @@
 public class Example {
 
-	private String field;
+	private String field1;
+
+	private String field2;
 
 }