feat(docs): #15 add cognitive complexity explanation

- Add a section to the documentation explaining the cognitive complexity
  and how it is calculated.
- Add a link to the white paper that explains the cognitive complexity
- Move the emoji to the left of the version in the console output

README.md

@@ -17,6 +17,13 @@
 </a>
 </p>
 
+
+Cognitive Complexity breaks from using mathematical models to assess software
+maintainability by combining Cyclomatic Complexity precedents with human
+assessment. It yields method complexity scores that align well with how
+developers perceive maintainability. Read the white paper here: [Cognitive Complexity, a new way of measuring understandability](https://www.sonarsource.com/resources/cognitive-complexity/)
+
+
 ---
 
 **Documentation**: <a href="https://rohaquinlop.github.io/complexipy/" target="_blank">https://rohaquinlop.github.io/complexipy/</a>
@@ -101,7 +108,7 @@ The cognitive complexity of the file is 1, and the output of the command
 `complexipy path/to/file.py` will be:
 
 ```txt
-───────────────────────────── complexipy 0.3.0 🐙 ──────────────────────────────
+───────────────────────────── 🐙 complexipy 0.3.0 ──────────────────────────────
                                     Summary
       ┏━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━┳━━━━━━━━━━━━┓
       ┃ Path              ┃ File              ┃ Function    ┃ Complexity ┃
@@ -115,6 +122,28 @@ The cognitive complexity of the file is 1, and the output of the command
 ────────────────────────── 🎉 Analysis completed! 🎉 ───────────────────────────
 ```
 
+#### Explaining the results of the analysis
+
+```python
+def a_decorator(a, b): # 0
+    def inner(func): # 0
+        return func # 0
+    return inner # 0
+
+def b_decorator(a, b): # 0
+    def inner(func): # 0
+        if func: # 1 (nested = 0), total 1
+            return None # 0
+        return func # 0
+    return inner # 0
+```
+
+The cognitive complexity of the file is 1, and the cognitive complexity of the
+function `b_decorator` is 1. This example is simple, but it shows how
+**complexipy** calculates the cognitive complexity according to the specifications
+of the paper "Cognitive Complexity a new way to measure understandability",
+considering the decorators and the if statement.
+
 #### Output to a CSV file
 
 If you want to output the results to a CSV file, you can use the `-o` option,

complexipy/main.py

@@ -67,12 +67,11 @@ def main(
     invocation_path = os.getcwd()
     file_level = level == Level.file
 
-    console.rule(f"complexipy {version} :octopus:")
-    with console.status("Analyzing the complexity of the code...", spinner="dots"):
-        start_time = time.time()
-        files: list[FileComplexity] = rust.main(
-            path, is_dir, is_url, max_complexity, file_level
-        )
+    console.rule(f":octopus: complexipy {version}")
+    start_time = time.time()
+    files: list[FileComplexity] = rust.main(
+        path, is_dir, is_url, max_complexity, file_level
+    )
     execution_time = time.time() - start_time
     output_csv_path = f"{invocation_path}/complexipy.csv"
 

docs/index.md

@@ -17,6 +17,13 @@
 </a>
 </p>
 
+
+Cognitive Complexity breaks from using mathematical models to assess software
+maintainability by combining Cyclomatic Complexity precedents with human
+assessment. It yields method complexity scores that align well with how
+developers perceive maintainability. Read the white paper here: [Cognitive Complexity, a new way of measuring understandability](https://www.sonarsource.com/resources/cognitive-complexity/)
+
+
 ---
 
 **Documentation**: <a href="https://rohaquinlop.github.io/complexipy/" target="_blank">https://rohaquinlop.github.io/complexipy/</a>
@@ -101,7 +108,7 @@ The cognitive complexity of the file is 1, and the output of the command
 `complexipy path/to/file.py` will be:
 
 ```txt
-───────────────────────────── complexipy 0.3.0 🐙 ──────────────────────────────
+───────────────────────────── 🐙 complexipy 0.3.0 ──────────────────────────────
                                     Summary
       ┏━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━┳━━━━━━━━━━━━┓
       ┃ Path              ┃ File              ┃ Function    ┃ Complexity ┃
@@ -115,6 +122,28 @@ The cognitive complexity of the file is 1, and the output of the command
 ────────────────────────── 🎉 Analysis completed! 🎉 ───────────────────────────
 ```
 
+#### Explaining the results of the analysis
+
+```python
+def a_decorator(a, b): # 0
+    def inner(func): # 0
+        return func # 0
+    return inner # 0
+
+def b_decorator(a, b): # 0
+    def inner(func): # 0
+        if func: # 1 (nested = 0), total 1
+            return None # 0
+        return func # 0
+    return inner # 0
+```
+
+The cognitive complexity of the file is 1, and the cognitive complexity of the
+function `b_decorator` is 1. This example is simple, but it shows how
+**complexipy** calculates the cognitive complexity according to the specifications
+of the paper "Cognitive Complexity a new way to measure understandability",
+considering the decorators and the if statement.
+
 #### Output to a CSV file
 
 If you want to output the results to a CSV file, you can use the `-o` option,