private void doCollection()

in src/main/java/org/apache/sling/scripting/jsp/jasper/tagplugins/jstl/core/ForEach.java [78:197]
95 lines of code
10 McCabe index (conditional complexity)

    private void doCollection(TagPluginContext ctxt) {
        
        ctxt.generateImport("java.util.*");
        generateIterators(ctxt);
        
        String itemsV = ctxt.getTemporaryVariableName();
        ctxt.generateJavaSource("Object " + itemsV + "= ");
        ctxt.generateAttribute("items");
        ctxt.generateJavaSource(";");
        
        String indexV=null, beginV=null, endV=null, stepV=null;
        if (hasBegin) {
            beginV = ctxt.getTemporaryVariableName();
            ctxt.generateJavaSource("int " + beginV + " = ");
            ctxt.generateAttribute("begin");
            ctxt.generateJavaSource(";");
        }
        if (hasEnd) {
            indexV = ctxt.getTemporaryVariableName();
            ctxt.generateJavaSource("int " + indexV + " = 0;");
            endV = ctxt.getTemporaryVariableName();
            ctxt.generateJavaSource("int " + endV + " = ");
            ctxt.generateAttribute("end");
            ctxt.generateJavaSource(";");
        }
        if (hasStep) {
            stepV = ctxt.getTemporaryVariableName();
            ctxt.generateJavaSource("int " + stepV + " = ");
            ctxt.generateAttribute("step");
            ctxt.generateJavaSource(";");
        }
        
        String iterV = ctxt.getTemporaryVariableName();
        ctxt.generateJavaSource("Iterator " + iterV + " = null;");
        // Object[]
        ctxt.generateJavaSource("if (" + itemsV + " instanceof Object[])");
        ctxt.generateJavaSource(iterV + "=toIterator((Object[])" + itemsV + ");");
        // boolean[]
        ctxt.generateJavaSource("else if (" + itemsV + " instanceof boolean[])");
        ctxt.generateJavaSource(iterV + "=toIterator((boolean[])" + itemsV + ");");
        // byte[]
        ctxt.generateJavaSource("else if (" + itemsV + " instanceof byte[])");
        ctxt.generateJavaSource(iterV + "=toIterator((byte[])" + itemsV + ");");
        // char[]
        ctxt.generateJavaSource("else if (" + itemsV + " instanceof char[])");
        ctxt.generateJavaSource(iterV + "=toIterator((char[])" + itemsV + ");");
        // short[]
        ctxt.generateJavaSource("else if (" + itemsV + " instanceof short[])");
        ctxt.generateJavaSource(iterV + "=toIterator((short[])" + itemsV + ");");
        // int[]
        ctxt.generateJavaSource("else if (" + itemsV + " instanceof int[])");
        ctxt.generateJavaSource(iterV + "=toIterator((int[])" + itemsV + ");");
        // long[]
        ctxt.generateJavaSource("else if (" + itemsV + " instanceof long[])");
        ctxt.generateJavaSource(iterV + "=toIterator((long[])" + itemsV + ");");
        // float[]
        ctxt.generateJavaSource("else if (" + itemsV + " instanceof float[])");
        ctxt.generateJavaSource(iterV + "=toIterator((float[])" + itemsV + ");");
        // double[]
        ctxt.generateJavaSource("else if (" + itemsV + " instanceof double[])");
        ctxt.generateJavaSource(iterV + "=toIterator((double[])" + itemsV + ");");
        
        // Collection
        ctxt.generateJavaSource("else if (" + itemsV + " instanceof Collection)");
        ctxt.generateJavaSource(iterV + "=((Collection)" + itemsV + ").iterator();");
        
        // Iterator
        ctxt.generateJavaSource("else if (" + itemsV + " instanceof Iterator)");
        ctxt.generateJavaSource(iterV + "=(Iterator)" + itemsV + ";");
        
        // Enumeration
        ctxt.generateJavaSource("else if (" + itemsV + " instanceof Enumeration)");
        ctxt.generateJavaSource(iterV + "=toIterator((Enumeration)" + itemsV + ");");
        
        // Map
        ctxt.generateJavaSource("else if (" + itemsV + " instanceof Map)");
        ctxt.generateJavaSource(iterV + "=((Map)" + itemsV + ").entrySet().iterator();");
        
        if (hasBegin) {
            String tV = ctxt.getTemporaryVariableName();
            ctxt.generateJavaSource("for (int " + tV + "=" + beginV + ";" +
                    tV + ">0 && " + iterV + ".hasNext(); " +
                    tV + "--)");
            ctxt.generateJavaSource(iterV + ".next();");
        }
        
        ctxt.generateJavaSource("while (" + iterV + ".hasNext()){");
        if (hasVar) {
            ctxt.generateJavaSource("_jspx_page_context.setAttribute(");
            ctxt.generateAttribute("var");
            ctxt.generateJavaSource(", " + iterV + ".next());");
        }
        
        ctxt.generateBody();
        
        if (hasStep) {
            String tV = ctxt.getTemporaryVariableName();
            ctxt.generateJavaSource("for (int " + tV + "=" + stepV + "-1;" +
                    tV + ">0 && " + iterV + ".hasNext(); " +
                    tV + "--)");
            ctxt.generateJavaSource(iterV + ".next();");
        }
        if (hasEnd) {
            if (hasStep) {
                ctxt.generateJavaSource(indexV + "+=" + stepV + ";");
            }
            else {
                ctxt.generateJavaSource(indexV + "++;");
            }
            if (hasBegin) {
                ctxt.generateJavaSource("if(" + beginV + "+" + indexV +
                        ">"+ endV + ")");
            }
            else {
                ctxt.generateJavaSource("if(" + indexV + ">" + endV + ")");
            }
            ctxt.generateJavaSource("break;");
        }
        ctxt.generateJavaSource("}");	// while
    }