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zcommon/src/main/java/org/zkoss/xel/util/Evaluators.java

Summary

Maintainability
B
4 hrs
Test Coverage

Method getEvaluatorClass has a Cognitive Complexity of 10 (exceeds 5 allowed). Consider refactoring.
Open

    @SuppressWarnings("unchecked")
    public static final Class<? extends ExpressionFactory> getEvaluatorClass(String name) {
        if (name == null || name.length() == 0)
            throw new IllegalArgumentException("empty or null");
Severity: Minor
Found in zcommon/src/main/java/org/zkoss/xel/util/Evaluators.java - About 1 hr to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Method load has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring.
Open

    synchronized static final void load() {
        if (_loaded)
            return;

        try {
Severity: Minor
Found in zcommon/src/main/java/org/zkoss/xel/util/Evaluators.java - About 55 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Method resolveVariable has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
Open

    public static Object resolveVariable(XelContext ctx,
    VariableResolver resolver, Object base, Object name) {
        if (resolver instanceof VariableResolverX) {
            if (ctx == null)
                ctx = new SimpleXelContext(resolver);
Severity: Minor
Found in zcommon/src/main/java/org/zkoss/xel/util/Evaluators.java - About 35 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Method resolveVariable has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
Open

    public static Object resolveVariable(XelContext ctx, Object base, Object name) {
        if (ctx != null) {
            VariableResolver resolver = ctx.getVariableResolver();
            if (resolver instanceof VariableResolverX)
                return  ((VariableResolverX)resolver).resolveVariable(ctx, base, name);
Severity: Minor
Found in zcommon/src/main/java/org/zkoss/xel/util/Evaluators.java - About 35 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

        if (name == null || name.length() == 0
        || evalcls == null || evalcls.length() == 0)
            throw new IllegalArgumentException("emty or null");
Severity: Minor
Found in zcommon/src/main/java/org/zkoss/xel/util/Evaluators.java and 1 other location - About 30 mins to fix
zk/src/main/java/org/zkoss/zk/scripting/Interpreters.java on lines 134..135

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 42.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 2 locations. Consider refactoring.
Open

    public static final String add(Element config) {
        //Spec: it is OK to declare an nonexist factory, since
        //deployer might remove unused jar files.
        final String name =
            IDOMs.getRequiredElementValue(config, "evaluator-name");
Severity: Minor
Found in zcommon/src/main/java/org/zkoss/xel/util/Evaluators.java and 1 other location - About 30 mins to fix
zk/src/main/java/org/zkoss/zk/scripting/Interpreters.java on lines 168..174

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 40.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

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