checks for whitespace after COMMA and TYPECAST

src/checkstyle/com/puppycrawl/tools/checkstyle/checks/WhitespaceAfterCheck.java

@@ -0,0 +1,82 @@
+////////////////////////////////////////////////////////////////////////////////
+// checkstyle: Checks Java source code for adherence to a set of rules.
+// Copyright (C) 2001-2002  Oliver Burn
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+////////////////////////////////////////////////////////////////////////////////
+package com.puppycrawl.tools.checkstyle.checks;
+
+import com.puppycrawl.tools.checkstyle.api.Check;
+import com.puppycrawl.tools.checkstyle.api.TokenTypes;
+import com.puppycrawl.tools.checkstyle.Java14TokenTypes;
+import com.puppycrawl.tools.checkstyle.api.DetailAST;
+
+/**
+ * Checks for whitespace after a token.
+ *
+ * @author <a href="mailto:checkstyle@puppycrawl.com">Oliver Burn</a>
+ * @author Rick Giles
+ * @version 1.0
+ */
+public class WhitespaceAfterCheck
+    extends Check
+{
+    /** @see com.puppycrawl.tools.checkstyle.api.Check */
+    public int[] getDefaultTokens()
+    {
+        return new int[] {
+            TokenTypes.COMMA,            // ','
+        };
+    }
+
+    /** @see com.puppycrawl.tools.checkstyle.api.Check */
+    public int[] getAcceptableTokens()
+    {
+        return new int[] {
+            TokenTypes.COMMA,            // ','
+            TokenTypes.TYPECAST,
+        };
+    }
+
+    /** @see com.puppycrawl.tools.checkstyle.api.Check */
+    public void visitToken(DetailAST aAST)
+    {
+
+        final String[] lines = getLines();
+        final Object[] message;
+        final DetailAST targetAST;
+        if (aAST.getType() == TokenTypes.TYPECAST) {
+            targetAST = aAST.findFirstToken(TokenTypes.RPAREN);
+            // TODO: i18n
+            message = new Object[]{"cast"};
+        }
+        else {
+            targetAST = aAST;
+            message = new Object[]{aAST.getText()};
+        }
+        final String line = lines[targetAST.getLineNo() - 1];
+        final int after =
+            targetAST.getColumnNo() + targetAST.getText().length();
+
+        if ((after < line.length())
+            && !Character.isWhitespace(line.charAt(after)))
+        {
+            log(targetAST.getLineNo(),
+                targetAST.getColumnNo() + targetAST.getText().length(),
+                "ws.notFollowed",
+                message);
+        }
+    }
+}

src/tests/com/puppycrawl/tools/checkstyle/WhitespaceAfterCheckTest.java

@@ -0,0 +1,41 @@
+package com.puppycrawl.tools.checkstyle;
+
+import com.puppycrawl.tools.checkstyle.checks.WhitespaceAfterCheck;
+
+public class WhitespaceAfterCheckTest
+    extends BaseCheckTestCase
+{
+    private CheckConfiguration checkConfig;
+    
+    public WhitespaceAfterCheckTest(String aName)
+    {
+        super(aName);
+    }
+    
+    public void setUp() {
+        checkConfig = new CheckConfiguration();
+        checkConfig.setClassname(WhitespaceAfterCheck.class.getName());
+    }
+    
+    public void testDefault() throws Exception
+    {
+        final Checker c = createChecker(checkConfig);
+        final String fname = getPath("InputSimple.java");
+        final String[] expected = {
+            "42:40: ',' is not followed by whitespace.",
+            "71:30: ',' is not followed by whitespace.",
+        };
+        verify(c, fname, expected);
+    }
+    
+    public void testCast() throws Exception
+    {
+        checkConfig.addTokens("TYPECAST");
+        final Checker c = createChecker(checkConfig);
+        final String fname = getPath("InputWhitespace.java");
+        final String[] expected = {
+            "88:21: 'cast' is not followed by whitespace.",
+        };
+        verify(c, fname, expected);
+    }
+}