private void writeMethod()

in src/main/java/org/apache/bcel/util/CodeHTML.java [478:561]

• 71 lines of code
• 12 McCabe index (conditional complexity)

    private void writeMethod(final Method method, final int methodNumber) throws IOException {
        // Get raw signature
        final String signature = method.getSignature();
        // Get array of strings containing the argument types
        final String[] args = Utility.methodSignatureArgumentTypes(signature, false);
        // Get return type string
        final String type = Utility.methodSignatureReturnType(signature, false);
        // Get method name
        final String name = method.getName();
        final String htmlName = Class2HTML.toHTML(name);
        // Get method's access flags
        String access = Utility.accessToString(method.getAccessFlags());
        access = Utility.replace(access, " ", " ");
        // Get the method's attributes, the Code Attribute in particular
        final Attribute[] attributes = method.getAttributes();
        printWriter.print("<P><B><FONT COLOR=\"#FF0000\">" + access + "</FONT>&nbsp;" + "<A NAME=method" + methodNumber + ">" + Class2HTML.referenceType(type)
            + "</A>&nbsp<A HREF=\"" + className + "_methods.html#method" + methodNumber + "\" TARGET=Methods>" + htmlName + "</A>(");
        for (int i = 0; i < args.length; i++) {
            printWriter.print(Class2HTML.referenceType(args[i]));
            if (i < args.length - 1) {
                printWriter.print(",&nbsp;");
            }
        }
        printWriter.println(")</B></P>");
        Code c = null;
        byte[] code = null;
        if (attributes.length > 0) {
            printWriter.print("<H4>Attributes</H4><UL>\n");
            for (int i = 0; i < attributes.length; i++) {
                byte tag = attributes[i].getTag();
                if (tag != Const.ATTR_UNKNOWN) {
                    printWriter.print("<LI><A HREF=\"" + className + "_attributes.html#method" + methodNumber + "@" + i + "\" TARGET=Attributes>"
                        + Const.getAttributeName(tag) + "</A></LI>\n");
                } else {
                    printWriter.print("<LI>" + attributes[i] + "</LI>");
                }
                if (tag == Const.ATTR_CODE) {
                    c = (Code) attributes[i];
                    final Attribute[] attributes2 = c.getAttributes();
                    code = c.getCode();
                    printWriter.print("<UL>");
                    for (int j = 0; j < attributes2.length; j++) {
                        tag = attributes2[j].getTag();
                        printWriter.print("<LI><A HREF=\"" + className + "_attributes.html#" + "method" + methodNumber + "@" + i + "@" + j
                            + "\" TARGET=Attributes>" + Const.getAttributeName(tag) + "</A></LI>\n");
                    }
                    printWriter.print("</UL>");
                }
            }
            printWriter.println("</UL>");
        }
        if (code != null) { // No code, an abstract method, for example
            // System.out.println(name + "\n" + Utility.codeToString(code, constantPool, 0, -1));
            // Print the byte code
            try (ByteSequence stream = new ByteSequence(code)) {
                stream.mark(stream.available());
                findGotos(stream, c);
                stream.reset();
                printWriter.println("<TABLE BORDER=0><TR><TH ALIGN=LEFT>Byte<BR>offset</TH>" + "<TH ALIGN=LEFT>Instruction</TH><TH ALIGN=LEFT>Argument</TH>");
                while (stream.available() > 0) {
                    final int offset = stream.getIndex();
                    final String str = codeToHTML(stream, methodNumber);
                    String anchor = "";
                    /*
                     * Sets an anchor mark if this line is targetted by a goto, jsr, etc. Defining an anchor for every line is very
                     * inefficient!
                     */
                    if (gotoSet.get(offset)) {
                        anchor = "<A NAME=code" + methodNumber + "@" + offset + "></A>";
                    }
                    final String anchor2;
                    if (stream.getIndex() == code.length) {
                        anchor2 = "<A NAME=code" + methodNumber + "@" + code.length + ">" + offset + "</A>";
                    } else {
                        anchor2 = "" + offset;
                    }
                    printWriter.println("<TR VALIGN=TOP><TD>" + anchor2 + "</TD><TD>" + anchor + str + "</TR>");
                }
            }
            // Mark last line, may be targetted from Attributes window
            printWriter.println("<TR><TD> </A></TD></TR>");
            printWriter.println("</TABLE>");
        }
    }