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WalkthroughThe EscapeCharacters method in the JSONWriter class has been refactored to streamline the character escaping process. Instead of initializing the StringBuilder with the input string and performing in-place replacements, the method now initializes an empty StringBuilder and appends segments of unescaped characters along with their corresponding escaped values when needed. A temporary variable is used to store the escaped representation, and final string assembly now includes explicit insertion of quotation marks. No public or exported entity declarations have been altered. Changes
Sequence Diagram(s)sequenceDiagram
participant C as Caller
participant J as JSONWriter
participant SB as StringBuilder
participant LP as Loop Process
C->>J: Call EscapeCharacters(sval)
J->>SB: Initialize empty StringBuilder
J->>LP: Begin loop through each character
LP-->>LP: Check if character requires escaping
alt Character needs escaping
LP-->>SB: Append unescaped segment (if any)
LP-->>SB: Append escaped value using temporary variable
else No escaping needed
LP-->>LP: Continue iterating
end
J->>SB: Append final segment and wrap with quotes
J-->>C: Return final escaped JSON string
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Actionable comments posted: 0
🧹 Nitpick comments (1)src/OneScript.StandardLibrary/Json/JSONWriter.cs (1)📜 Review details126-203: Great optimization of the string escaping logic!
The modified approach builds the result string incrementally rather than using in-place replacements in a pre-populated StringBuilder. This provides significant performance improvements by:
- Minimizing character shifting operations
- Reducing unnecessary string manipulations for sequences that don't need escaping
- Processing the string in a single pass
The benchmark results confirming this optimization (mentioned in the PR description) show impressive gains - reducing execution time from ~1.7s to ~6ms for 1MB strings.
One minor suggestion:
Consider pre-allocating the StringBuilder capacity based on the input string length to avoid potential resizing operations:
- var sb = new StringBuilder(); + var sb = new StringBuilder(sval.Length + 10); // +10 for escaped chars and quotes
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Reviewing files that changed from the base of the PR and between 00723cb and 2b9006e.
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Спасибо, что залезаете в те места куда никто давно не ходит |
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