Consolidate unicode #7
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WalkthroughA new centralized function for processing Unicode escape sequences was introduced in the escape processor module. Both the pull-based and stream-based parsers were refactored to use this shared function, replacing their previous manual handling of Unicode escape sequences with calls to the new helper, thereby consolidating and simplifying the relevant logic. Changes
Sequence Diagram(s)sequenceDiagram
participant Parser (Pull/Stream)
participant EscapeProcessor
participant UnicodeEscapeCollector
Parser->>EscapeProcessor: process_unicode_escape_sequence(...)
EscapeProcessor->>UnicodeEscapeCollector: feed hex digits
EscapeProcessor->>EscapeProcessor: convert to UTF-8 bytes
EscapeProcessor-->>Parser: return UTF-8 bytes, start pos or error
Parser->>Parser: handle result (e.g., append to buffer)
Poem
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Reviewer's GuideThis PR refactors Unicode escape handling into a shared function, updates both the flex and direct parsers to use this centralized logic, and applies minor code formatting improvements in number parsing and match arms. Class diagram for centralized Unicode escape handlingclassDiagram
class PullParserFlex {
- buffer
- unicode_escape_collector
- copy_on_escape
+ process_unicode_escape_with_collector()
}
class DirectParser {
- direct_buffer
- unicode_escape_collector
+ process_unicode_escape_with_collector()
}
class UnicodeEscapeCollector {
+ add_hex_digit()
+ process_to_utf8()
}
class EscapeProcessor {
+ process_unicode_escape_sequence()
}
PullParserFlex --> EscapeProcessor : uses
DirectParser --> EscapeProcessor : uses
EscapeProcessor --> UnicodeEscapeCollector : uses
PullParserFlex --> UnicodeEscapeCollector : has
DirectParser --> UnicodeEscapeCollector : has
File-Level Changes
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Summary of Changes
Hello @kaidokert, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!
This pull request focuses on consolidating the Unicode escape sequence processing logic within the picojson library. By extracting the common parsing steps into a shared utility function, it significantly reduces code duplication across the different parser implementations, leading to a more maintainable and robust codebase.
Highlights
- Centralized Unicode Escape Processing: Introduced a new shared function,
process_unicode_escape_sequence, inpicojson/src/escape_processor.rs. This function encapsulates the common logic for parsing\uXXXXUnicode escape sequences, including extracting hex digits, validating their length, and converting them to UTF-8 bytes. It uses a generichex_slice_providerclosure to abstract over different buffer implementations. - Refactored Parser Implementations: The
DirectParserinpicojson/src/direct_parser.rsandPullParserFlexinpicojson/src/flex_parser.rshave been refactored to utilize the newly introducedprocess_unicode_escape_sequencefunction. This eliminates duplicated code for Unicode escape handling, making the parsers leaner and more maintainable. - Minor Formatting and Cleanup: Small formatting adjustments were applied in
picojson/src/flex_parser.rsto improve readability of function signatures and match statements. Additionally, extraneous blank lines were removed frompicojson/src/number_parser.rs.
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Hey @kaidokert - I've reviewed your changes - here's some feedback:
- The doc comment for process_unicode_escape_sequence mentions a copy_on_escape_handler parameter which no longer exists—please update the docs to match the actual function signature and return values.
- In DirectParser, you manually copy utf8_bytes into a fixed‐size array before appending; consider buffering the slice directly or leveraging the shared escape handler to reduce boilerplate.
Prompt for AI Agents
Please address the comments from this code review:
## Overall Comments
- The doc comment for process_unicode_escape_sequence mentions a copy_on_escape_handler parameter which no longer exists—please update the docs to match the actual function signature and return values.
- In DirectParser, you manually copy utf8_bytes into a fixed‐size array before appending; consider buffering the slice directly or leveraging the shared escape handler to reduce boilerplate.Help me be more useful! Please click 👍 or 👎 on each comment and I'll use the feedback to improve your reviews.
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Code Review
This pull request consolidates the Unicode escape sequence parsing logic into a shared function, process_unicode_escape_sequence, which improves maintainability. The review focuses on improving the documentation of the new function and ensuring that error information is not lost during the refactoring.
Summary by Sourcery
Consolidate unicode escape handling by introducing a shared process_unicode_escape_sequence function and refactor both FlexParser and DirectParser to use it, while applying minor formatting and signature standardizations for consistency.
Enhancements:
Summary by CodeRabbit