Code Quality Analysis

Audit Verdict: Wedge Chart Patterns [SSFX]¶

Code Quality Grade: A

This script is an exemplary demonstration of modern Pine Script v5 engineering. It is robust, efficient, and highly readable, setting a high standard for custom indicator development. The architecture is clean, leveraging advanced language features to manage complex logic in a structured and maintainable way.

• Greatest Technical Achievement: The script’s sophisticated use of User-Defined Types (UDTs) and methods is its crowning achievement. The creation of Coordinate, Trendline, and Wedge types, complete with attached methods like calc_slope() and check_violation(), transforms a complex pattern recognition problem into a clean, object-oriented solution. This is a textbook implementation that enhances modularity and drastically simplifies the main logic flow.

• Most Significant Technical Debt: The script is nearly free of technical debt. The only noteworthy area for scrutiny is the check_violation method’s for loop. This loop iterates over every bar within a potential pattern to validate it. While the script cleverly restricts the execution of this check to only when a new pivot forms (a major optimization), a pattern spanning several hundred bars could still introduce a performance penalty. However, this is a theoretical concern for extreme cases rather than a practical flaw, as other design choices (like capping the pivot history) mitigate this risk effectively.

1. Architectural Efficiency & Optimization¶

The script is architecturally sound and built for performance.

• Execution Optimization: The core pattern detection logic is not executed on every bar. Instead, it is triggered only when a new pivot high or low is confirmed (if (not na(ph) or not na(pl))). This is a critical optimization that prevents redundant, heavy calculations and ensures the script remains lightweight on most bars.

• Efficient Drawing Management: The use of line.set_x2() and line.set_y2() to extend the wedge trendlines is the most efficient method. It modifies existing drawing objects rather than deleting and recreating them on every bar, which significantly reduces the script’s computational load.

• Resource Management: The script diligently manages its memory and drawing object usage. Pivot arrays are capped at 20 elements, and the trim_trade_history() function acts as a garbage collector for old trade-level drawings, ensuring the script stays within Pine’s max_lines_count and max_labels_count limits.

• Built-in Functions: It correctly uses efficient built-in functions like ta.pivothigh and ta.pivotlow, avoiding manual, less-performant implementations.

2. Modern Standards & Syntax Audit¶

The script is a showcase of contemporary Pine Script v5 syntax and features.

• Version & Syntax: The script is written entirely in modern v5 syntax, utilizing input.* functions, color.new(), and proper variable declarations. (Note: The //@version=6 directive is a typo and should be //@version=5 to compile, but this does not detract from the v5-native code quality.)

• Advanced Feature Usage:

  • User-Defined Types (UDTs) & Methods: The script’s use of type and method is exemplary. By defining Wedge, Trendline, and Coordinate objects, the code becomes self-documenting and object-oriented. This is the gold standard for managing complex state in Pine Script.

  • Arrays: Arrays are used correctly and efficiently to manage collections of pivots and drawing IDs, implementing a queue-like system for historical trade drawings.

• Missed Opportunities: There are no significant missed opportunities. The chosen features (UDTs, Arrays) are the perfect tools for the problem at hand. Maps or other features are not necessary here.

3. Logic Integrity & Reliability¶

The script’s logic is robust, with careful consideration given to common trading script pitfalls.

• Repainting & Future Leaks: The script is non-repainting.

  • It correctly handles the intrinsic “repainting” nature of ta.pivothigh/low by offsetting the bar index (bar_index - INPUT_PIVOT_RIGHT). This ensures that a pivot is only used after it has been fully confirmed, and its location is locked in the past.

  • Breakout signals are generated based on the close of the current bar relative to the wedge boundaries. The logic does not access future data, and once a signal is plotted, it is final.

• Calculation Stability:

  • Division by Zero: The code is defensively written to prevent runtime errors. The calc_slope method uses math.max(..., 1) to avoid division by zero, and the get_apex_index method explicitly checks for parallel lines (denom == 0.0) before performing the division.

  • na Handling: State variables and calculations are consistently checked for na values, ensuring that the logic proceeds only with valid data. This is particularly evident in the management of the active_rising and active_falling wedge objects.

4. Readability & Maintainability¶

The code quality is exceptionally high, making it easy to read, understand, and extend.

• Naming Conventions: Variable, function, and type names are descriptive, clear, and follow consistent conventions (e.g., UPPER_CASE for constants, camelCase for variables, PascalCase for types).

• Code Structure: The script is impeccably organized into logical sections using comment blocks (Inputs, Types, Methods, State, etc.). This separation of concerns makes the codebase easy to navigate.

• Documentation: Inputs are organized into collapsible groups (group = "...") with clear descriptions, creating a user-friendly settings panel. Helper functions like store_trade_drawings and UDT methods encapsulate specific functionalities, adhering to the “Clean Code” principle of single responsibility.