⚡️ Speed up Segment.get_shape() by 7% in rich/segment.py

[codeflash-ai]

📄 Segment.get_shape() in rich/segment.py

📈 Performance improved by 7% (0.07x faster)

⏱️ Runtime went down from 359 milliseconds to 334 milliseconds

Explanation and details

To optimize the provided code, I've made a few improvements targeting mainly the get_line_length and get_shape methods. These changes should help in reducing function call overheads and unnecessary repetitions. Here's the optimized version.

Key optimizations include.

1. Removing repeated lookups and direct function calls inside loops to minimize execution overhead.
2. Inlining critical logic within the get_shape method to avoid calling get_line_length repeatedly.
3. Simplifying conditions within the __rich_repr__ method to remove any slight redundancy.

These changes should make the code a bit more efficient while ensuring the functionality remains unchanged.

Correctness verification

The new optimized code was tested for correctness. The results are listed below.

✅ 49 Passed − ⚙️ Existing Unit Tests

(click to show existing tests)

- test_segment.py

✅ 15 Passed − 🌀 Generated Regression Tests

(click to show generated tests)

# imports
from typing import List, NamedTuple, Tuple

import pytest  # used for our unit tests
from rich.cells import cell_len
from rich.repr import Result


# unit tests
def test_single_line_one_segment():
    # Single line with one segment
    lines = [[Segment(text="Hello", style=None, control=None)]]
    assert Segment.get_shape(lines) == (5, 1)

def test_multiple_lines_one_segment_each():
    # Multiple lines with one segment each
    lines = [
        [Segment(text="Hello", style=None, control=None)],
        [Segment(text="World", style=None, control=None)]
    ]
    assert Segment.get_shape(lines) == (5, 2)

def test_empty_list():
    # Empty list
    lines = []
    assert Segment.get_shape(lines) == (0, 0)

def test_list_with_empty_line():
    # List with empty line
    lines = [[]]
    assert Segment.get_shape(lines) == (0, 1)

def test_lines_with_mixed_segment_lengths():
    # Lines with mixed segment lengths
    lines = [
        [Segment(text="Hello", style=None, control=None)],
        [Segment(text="Hi", style=None, control=None)]
    ]
    assert Segment.get_shape(lines) == (5, 2)

def test_lines_with_mixed_segment_and_control():
    # Lines with mixed segment and control
    lines = [
        [Segment(text="Hello", style=None, control=None)],
        [Segment(text="Hi", style=None, control="control")]
    ]
    assert Segment.get_shape(lines) == (5, 2)

def test_segments_with_control_attributes():
    # Segments with control attributes
    lines = [[Segment(text="Hello", style=None, control="control")]]
    assert Segment.get_shape(lines) == (0, 1)

def test_segments_with_empty_text():
    # Segments with empty text
    lines = [[Segment(text="", style=None, control=None)]]
    assert Segment.get_shape(lines) == (0, 1)

def test_large_number_of_lines():
    # Large number of lines
    lines = [[Segment(text="Line" + str(i), style=None, control=None)] for i in range(1000)]
    assert Segment.get_shape(lines) == (8, 1000)  # "Line999" is the longest line

def test_large_number_of_segments_in_single_line():
    # Large number of segments in a single line
    lines = [[Segment(text="A", style=None, control=None) for _ in range(1000)]]
    assert Segment.get_shape(lines) == (1000, 1)

def test_unicode_characters():
    # Unicode characters
    lines = [[Segment(text="こんにちは", style=None, control=None)]]
    assert Segment.get_shape(lines) == (5, 1)  # Assuming each character is counted as 1 cell

def test_special_characters():
    # Special characters
    lines = [[Segment(text="!@#$%", style=None, control=None)]]
    assert Segment.get_shape(lines) == (5, 1)

def test_segments_with_styles():
    # Segments with styles
    lines = [[Segment(text="Hello", style="bold", control=None)]]
    assert Segment.get_shape(lines) == (5, 1)

def test_segments_with_mixed_styles_and_controls():
    # Segments with mixed styles and controls
    lines = [
        [Segment(text="Hello", style="bold", control=None)],
        [Segment(text="World", style="italic", control="control")]
    ]
    assert Segment.get_shape(lines) == (5, 2)

def test_very_large_input():
    # Very large input
    lines = [[Segment(text="Line" + str(i), style=None, control=None)] for i in range(100000)]
    assert Segment.get_shape(lines) == (9, 100000)  # "Line99999" is the longest line

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