🧹 chore: Simplify generic function calls #3578
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WalkthroughThe changes refactor conditional logic in several functions by replacing if-else statements with switch statements for clarity and consistency. Additionally, explicit generic type parameters are removed from function calls in both production and test code, relying on type inference instead. No public APIs or method signatures are altered. Changes
Sequence Diagram(s)sequenceDiagram
participant Client
participant DefaultCtx
participant HeaderParser
Client->>DefaultCtx: extractIPsFromHeader(header)
DefaultCtx->>HeaderParser: loop through header chars (switch on ':' or '.')
HeaderParser-->>DefaultCtx: Return parsed IPs
DefaultCtx-->>Client: Return list of IPs
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Summary of Changes
Hello @axrav, 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 internal code optimizations to enhance readability, maintainability, and performance. The primary changes involve replacing multi-condition if-else if chains with switch statements and simplifying generic function calls by leveraging Go's type inference, particularly within context and state management functionalities and their corresponding tests.
Highlights
- Conditional Logic Refactoring: I've refactored several
if-else ifstatements into more efficient and readableswitchstatements. This applies to IP address parsing logic withinctx.goand route path matching inrouter.go, aiming for improved performance and code clarity. - Generic Type Simplification: I've simplified generic function calls by removing explicit type parameters where Go's type inference can automatically determine the type. This change is primarily visible in
ctx.go(forQuerymethod calls) and various test files (ctx_test.go,state_test.go) for functions likeLocalsandGetState, making the code cleaner and less verbose.
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Pull Request Overview
This PR refactors various generic function calls to leverage type inference and replaces if-else chains with switch statements for improved readability and performance.
- Swapped
if-elsechains forswitchin context and router logic - Simplified generic calls by removing explicit type arguments in tests and code
Reviewed Changes
Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.
| File | Description |
|---|---|
| state_test.go | Removed explicit generic type parameters in runGenericTest and benchmark calls |
| ctx_test.go | Simplified calls to Locals and Query by relying on type inference |
| ctx.go | Replaced two if-else chains in IP extraction and Query method with switch statements |
| router.go | Replaced if/else if route matching with a switch on routePath |
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Actionable comments posted: 0
🧹 Nitpick comments (2)
router.go (1)
642-648: Switch works, but the two cases still duplicate the same append – consider collapsing themThe new
switchis clearer than the oldifchain, but bothcase 0andcase treePathexecute the very same statement.
A small refactor keeps intent while removing duplication:- switch routePath { - case 0: - tsMap[treePath] = append(tsMap[treePath], route) - case treePath: - tsMap[treePath] = append(tsMap[treePath], route) - } + if routePath == 0 || routePath == treePath { + tsMap[treePath] = append(tsMap[treePath], route) + }Less code, same behavior, no extra allocations.
(If you prefer sticking with aswitch, keep a singlecaseand usefallthrough.)state_test.go (1)
908-909: Minor: make the default value explicitly typed to avoid future surprises
0is an untyped constant and defaults toint, which is what you want today.
If someone changes the benchmark to useuint(or any other numeric type), the call will start inferring the wrongTsilently. To make intention crystal-clear:- GetStateWithDefault(st, key, 0) + GetStateWithDefault[int](st, key, 0)Not critical, just a belt-and-braces suggestion.
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📒 Files selected for processing (4)
ctx.go(3 hunks)ctx_test.go(3 hunks)router.go(1 hunks)state_test.go(2 hunks)
🧰 Additional context used
🧠 Learnings (5)
📓 Common learnings
Learnt from: sixcolors
PR: gofiber/fiber#3446
File: docs/middleware/logger.md:44-44
Timestamp: 2025-05-13T00:19:16.407Z
Learning: In documentation files for the Fiber framework, code examples are often partial and don't repeat import statements that were shown in earlier examples, focusing instead on demonstrating specific usage patterns.
Learnt from: ReneWerner87
PR: gofiber/fiber#3161
File: app.go:923-932
Timestamp: 2024-11-15T07:56:21.623Z
Learning: In the Fiber framework, breaking changes are acceptable when moving from version 2 to version 3, including modifications to method signatures such as in the `Test` method in `app.go`.
router.go (2)
Learnt from: ReneWerner87
PR: gofiber/fiber#3161
File: app.go:923-932
Timestamp: 2024-11-15T07:56:21.623Z
Learning: In the Fiber framework, breaking changes are acceptable when moving from version 2 to version 3, including modifications to method signatures such as in the `Test` method in `app.go`.
Learnt from: ckoch786
PR: gofiber/fiber#3230
File: docs/whats_new.md:944-951
Timestamp: 2024-12-15T19:56:45.935Z
Learning: Detailed usage examples and explanations for new methods like `RemoveRoute` and `RemoveRouteByName` are documented in `docs/api/app.md`, so it's unnecessary to duplicate them in `docs/whats_new.md`.
state_test.go (6)
Learnt from: ReneWerner87
PR: gofiber/fiber#3161
File: app.go:923-932
Timestamp: 2024-11-15T07:56:21.623Z
Learning: In the Fiber framework, breaking changes are acceptable when moving from version 2 to version 3, including modifications to method signatures such as in the `Test` method in `app.go`.
Learnt from: efectn
PR: gofiber/fiber#3162
File: hooks_test.go:228-228
Timestamp: 2024-12-13T08:14:22.851Z
Learning: In Go test files, prefer using the `require` methods from the `testify` package for assertions instead of manual comparisons and calls to `t.Fatal` or `t.Fatalf`.
Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/session/store.go:164-167
Timestamp: 2024-10-08T19:06:06.583Z
Learning: Unit tests in this project use testify require.
Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/session/store.go:164-167
Timestamp: 2024-10-02T23:03:31.727Z
Learning: Unit tests in this project use testify require.
Learnt from: sixcolors
PR: gofiber/fiber#2922
File: middleware/cors/utils.go:63-71
Timestamp: 2024-10-08T19:06:06.583Z
Learning: The project uses the testify/assert package for assertions in unit tests.
Learnt from: sixcolors
PR: gofiber/fiber#2922
File: middleware/cors/utils.go:63-71
Timestamp: 2024-07-26T21:00:12.902Z
Learning: The project uses the testify/assert package for assertions in unit tests.
ctx_test.go (13)
undefined
<retrieved_learning>
Learnt from: gaby
PR: #3193
File: middleware/cache/cache_test.go:897-897
Timestamp: 2024-11-08T04:10:42.990Z
Learning: In the Fiber framework, Context() is being renamed to RequestCtx(), and UserContext() to Context() to improve clarity and align with Go's context conventions.
</retrieved_learning>
<retrieved_learning>
Learnt from: ReneWerner87
PR: #3161
File: app.go:923-932
Timestamp: 2024-11-15T07:56:21.623Z
Learning: In the Fiber framework, breaking changes are acceptable when moving from version 2 to version 3, including modifications to method signatures such as in the Test method in app.go.
</retrieved_learning>
<retrieved_learning>
Learnt from: gaby
PR: #3170
File: ctx_test.go:1721-1724
Timestamp: 2024-10-16T12:12:30.506Z
Learning: In the Go unit tests in ctx_test.go, it is acceptable to use invalid CIDR notation such as "0.0.0.1/31junk" for testing purposes.
</retrieved_learning>
<retrieved_learning>
Learnt from: gaby
PR: #3193
File: middleware/adaptor/adaptor.go:111-111
Timestamp: 2024-11-10T23:44:13.704Z
Learning: In the middleware/adaptor/adaptor.go file of the Fiber framework, when updating context handling, replacing c.Context() with c.RequestCtx() is appropriate to access the fasthttp.RequestCtx.
</retrieved_learning>
<retrieved_learning>
Learnt from: efectn
PR: #3162
File: hooks_test.go:228-228
Timestamp: 2024-12-13T08:14:22.851Z
Learning: In Go test files, prefer using the require methods from the testify package for assertions instead of manual comparisons and calls to t.Fatal or t.Fatalf.
</retrieved_learning>
<retrieved_learning>
Learnt from: efectn
PR: #3162
File: app_test.go:893-895
Timestamp: 2024-11-29T12:37:27.581Z
Learning: In the Test_App_ShutdownWithContext function in app_test.go, the clientDone channel is used to synchronize the client's request completion before proceeding, eliminating the need for additional time.Sleep calls.
</retrieved_learning>
<retrieved_learning>
Learnt from: sixcolors
PR: #3016
File: middleware/session/config.go:122-122
Timestamp: 2024-09-25T16:18:34.719Z
Learning: In DefaultErrorHandler(c *fiber.Ctx, err error), since c is a pointer to an interface, we need to dereference *c when calling interface methods like SendStatus.
</retrieved_learning>
<retrieved_learning>
Learnt from: sixcolors
PR: #3016
File: middleware/session/config.go:122-122
Timestamp: 2024-10-08T19:06:06.583Z
Learning: In DefaultErrorHandler(c *fiber.Ctx, err error), since c is a pointer to an interface, we need to dereference *c when calling interface methods like SendStatus.
</retrieved_learning>
<retrieved_learning>
Learnt from: sixcolors
PR: #3016
File: middleware/session/middleware_test.go:400-407
Timestamp: 2024-09-25T17:09:03.756Z
Learning: In the Test_Session_Next function in middleware/session/middleware_test.go, the variable doNext is properly synchronized with the muNext mutex for both read and write access.
</retrieved_learning>
<retrieved_learning>
Learnt from: sixcolors
PR: #3016
File: middleware/session/store.go:164-167
Timestamp: 2024-10-02T23:03:31.727Z
Learning: Unit tests in this project use testify require.
</retrieved_learning>
<retrieved_learning>
Learnt from: sixcolors
PR: #3016
File: middleware/session/store.go:164-167
Timestamp: 2024-10-08T19:06:06.583Z
Learning: Unit tests in this project use testify require.
</retrieved_learning>
<retrieved_learning>
Learnt from: sixcolors
PR: #2922
File: middleware/cors/utils.go:63-71
Timestamp: 2024-10-08T19:06:06.583Z
Learning: The project uses the testify/assert package for assertions in unit tests.
</retrieved_learning>
<retrieved_learning>
Learnt from: sixcolors
PR: #2922
File: middleware/cors/utils.go:63-71
Timestamp: 2024-07-26T21:00:12.902Z
Learning: The project uses the testify/assert package for assertions in unit tests.
</retrieved_learning>
ctx.go (3)
Learnt from: gaby
PR: gofiber/fiber#3193
File: middleware/adaptor/adaptor.go:111-111
Timestamp: 2024-11-10T23:44:13.704Z
Learning: In the `middleware/adaptor/adaptor.go` file of the Fiber framework, when updating context handling, replacing `c.Context()` with `c.RequestCtx()` is appropriate to access the `fasthttp.RequestCtx`.
Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-09-25T15:57:10.221Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.
Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-10-08T19:06:06.583Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.
🔇 Additional comments (7)
state_test.go (1)
471-490: LGTM – implicit type-argument inference is fineDropping the explicit
[T]fromrunGenericTestcalls improves readability; Go’s type inference infersTfrom the slice literal, so this compiles on 1.22+. The explicit type arguments onGetState[...]remain necessary and are untouched. No issues here.ctx.go (3)
871-876: LGTM! Switch statement improves readability and performance.The refactoring from if-else to switch statement for character checking is well-implemented. This change improves code clarity when checking for IPv6 (
:) and IPv4 (.) indicators in header parsing, and switch statements are generally more efficient for multiple condition checks.
922-927: LGTM! Consistent switch statement implementation.This switch statement matches the pattern used in
extractIPsFromHeaderand provides the same performance and readability benefits. The logic for detecting IPv6 and IPv4 address formats is preserved and more clearly expressed.
1291-1291: LGTM! Generic function call simplification works correctly.The removal of explicit generic type parameters from the
Queryfunction call is appropriate here. Go's type inference will correctly determine thatVshould bestringbased on the method signaturefunc (c *DefaultCtx) Query(key string, defaultValue ...string) stringand the call toQuery[V GenericType](c Ctx, key string, defaultValue ...V) V. This change improves code readability while maintaining the same functionality.ctx_test.go (3)
2514-2516: LGTM! Improved code clarity by relying on type inference.The removal of explicit generic type parameters simplifies the function calls while maintaining the same functionality. Go's type inference can correctly determine the types from the values being stored (
"doe"→ string,18→ int,true→ bool).
2542-2542: LGTM! Simplified generic function call with type inference.The explicit generic type parameter is correctly removed as Go can infer the
Usertype from the struct literal value being passed to theLocalsfunction.
3062-3062: LGTM! Type inference simplifies the Query function call.The explicit generic type parameter is correctly removed as Go can infer the string type from the default value
"default"being passed to theQueryfunction.
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Code Review
This pull request refactors the codebase by replacing if-else chains with switch statements and simplifying generic function calls. I've suggested a simplification in router.go to remove code duplication. Overall, the changes improve code quality.
Codecov ReportAttention: Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## main #3578 +/- ##
=======================================
Coverage 90.96% 90.97%
=======================================
Files 111 111
Lines 11124 11121 -3
=======================================
- Hits 10119 10117 -2
- Misses 753 754 +1
+ Partials 252 250 -2
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gaby
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Description
Used switch tags instead of if loops, simplified state management in context and tests
Fixes # (issue)
Changes introduced
List the new features or adjustments introduced in this pull request. Provide details on benchmarks, documentation updates, changelog entries, and if applicable, the migration guide.
Type of change
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Checklist
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/docs/directory for [Fiber's documentation](https://docs.gofiber.io/).Detailed Changes
1. Switch Statement Optimization
Before:
After:
2. Simplified Generic Type Usage in Tests
Before:
After:
These changes improve code readability and performance by: