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qutip/qutip-qip

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src/qutip_qip/qasm.py

Summary

Maintainability
D
1 day
Test Coverage

Function _regs_processor has a Cognitive Complexity of 50 (exceeds 20 allowed). Consider refactoring.
Open

    def _regs_processor(self, regs, reg_type):
        """
        Process register tokens: map them to the :class:`.QubitCircuit` indices
        of the respective registers.
Severity: Minor
Found in src/qutip_qip/qasm.py - About 5 hrs 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

Function _initialize_pass has a Cognitive Complexity of 32 (exceeds 20 allowed). Consider refactoring.
Open

    def _initialize_pass(self):
        """
        Passes through the tokenized commands, create QasmGate objects for
        each user-defined gate, process register declarations.
        """
Severity: Minor
Found in src/qutip_qip/qasm.py - About 2 hrs 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

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

            elif command[0] == "creg":
                groups = re.match(r"(.*)\[(.*)\]", "".join(command[1:]))
                if groups:
                    cbit_name = groups.group(1)
                    num_regs = int(groups.group(2))
Severity: Major
Found in src/qutip_qip/qasm.py and 1 other location - About 3 hrs to fix
src/qutip_qip/qasm.py on lines 340..350

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 104.

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

            elif command[0] == "qreg":
                groups = re.match(r"(.*)\[(.*)\]", "".join(command[1:]))
                if groups:
                    qubit_name = groups.group(1)
                    num_regs = int(groups.group(2))
Severity: Major
Found in src/qutip_qip/qasm.py and 1 other location - About 3 hrs to fix
src/qutip_qip/qasm.py on lines 352..362

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 104.

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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