JSON language support by selfagency · Pull Request #282 · alexpovel/srgn

selfagency · 2026-05-09T17:31:44Z

Summary

Add complete JSON language support to srgn using tree-sitter-json v0.24.8 with 20 prepared queries covering all JSON grammatical elements.

Changes

Core Features

New language module: src/scoping/langs/json.rs (133 lines)
- 20 PreparedQuery variants covering all JSON grammatical elements
- Inline query strings following Python pattern for consistency
- Implements both Find and LanguageScoper traits

Prepared Query Coverage

Core queries (6):

Comments, Objects, Arrays, Strings, Numbers
Boolean literals, Null values

Advanced queries (9):

Object key-value pairs, Array elements, String escape sequences
All values (catch-all for all JSON types)
Nested objects, Nested arrays, Mixed structures

Specific patterns (5):

Integer numbers, Float numbers, Double-quoted strings
Top-level values, Empty objects

CLI Integration

Added JsonScope struct with --json flag support
CLI argument parsing and integration in src/main.rs
Module registration in language support system

Test Coverage

19 comprehensive test cases with snapshot validation
170 lines of JSON test data covering all scenarios
19 snapshot files for precise scope validation
Test data includes:
- All 7 JSON primitive types (string, number, boolean, null, object, array, comment)
- 4 levels of nesting depth
- Negative numbers, escape sequences, edge cases
- Mixed type arrays, complex nested structures

Examples

Basic usage

# Extract all JSON comments
srgn --json comments input.json

# Find JSON strings  
srgn --json strings config.json

# Locate JSON objects
srgn --json objects data.json

Complex scoping

# Extract nested JSON objects
srgn --json nested-objects api-response.json

# Find mixed structures (objects within arrays)
srgn --json mixed-structures data.json

# Locate empty JSON objects
ssgn --json empty-objects config.json

Test Results

All 812 tests passing:

501 unit tests
40 module tests (+19 JSON)
59 CLI tests
199 language tests (+19 JSON)
1 README test
2 regression tests
12 doctests

Clippy pedantic mode passing with zero warnings.

Technical Details

Query Fixes Applied

Fixed node types: _value instead of value (tree-sitter JSON grammar)
Fixed NestedObjects pattern: (object (pair value: (object) @nested)) @parent
Fixed array capture names for proper structure matching
All queries compile successfully against tree-sitter JSON grammar v0.24.8

Dependencies

Added tree-sitter-json = "0.24.8" to Cargo.toml
Compatible with existing MSRV and dependency constraints
Follows established language module patterns from Python/Rust/TypeScript implementations

Add complete JSON language support using tree-sitter-json v0.24.8 with 20 prepared queries covering all JSON grammatical elements: Core queries: - Comments, Objects, Arrays, Strings, Numbers - Boolean literals, Null values Advanced queries: - Object key-value pairs, Array elements, String escape sequences - All values (catch-all for all JSON types) Structure queries: - Nested objects, Nested arrays, Mixed structures - Integer numbers, Float numbers, Double-quoted strings - Top-level values, Empty objects All queries use inline strings following Python pattern for consistency. Added comprehensive test coverage: 19 test cases with 170 lines of JSON test data, 19 snapshot files validating correct scoping behavior. CLI integration complete with JsonScope struct supporting --json flag. All 812 tests passing (501 unit + 40 module + 59 CLI + 199 langs + 1 README + 2 regression + 12 doctests). Clippy pedantic mode passing with zero warnings.

@object

- Fix Objects query to match all objects including empty ones: (object) @object - Fix Arrays query to match all arrays including empty ones: (array) @array - Fix ObjectKeyValuePairs to only capture pair nodes (remove redundant @object capture) - Fix ArrayElements to only capture element nodes (remove redundant @array capture) - Fix IntegerNumbers with #match? predicate to only match numbers without decimal point - Fix FloatNumbers with #match? predicate to only match numbers containing a decimal point - Fix TopLevelValues to use (document (_value) @value) - now actually matches content - Fix EmptyObjects with #match? predicate to only match truly empty objects {} - Fix MixedStructures: reorder query pattern and add matching test data to base.json - Update DoubleQuotedStrings doc to clarify it's equivalent to Strings - Update all doc comments to be more precise about behavior - Regenerate all affected snapshots - Update README via FIX_README=1 Agent-Logs-Url: https://github.com/selfagency/srgn/sessions/dfcf5c43-b13c-4755-b1d7-a128b34d0250 Co-authored-by: selfagency <2541728+selfagency@users.noreply.github.com>

Copilot

Pull request overview

Adds first-class JSON language scoping to srgn by integrating tree-sitter-json, exposing prepared queries via the CLI, and validating behavior through snapshot-based language tests.

Changes:

Added a new JSON language module (PreparedQuery + CompiledQuery) and registered it in the language system.
Wired JSON scoping into the CLI (--json, --json-query, --json-query-file) and documented it in the README help output.
Added JSON test corpus plus snapshot coverage for all prepared queries.

Reviewed changes

Copilot reviewed 26 out of 27 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
`src/scoping/langs/json.rs`	Implements JSON prepared queries and compiled query wrapper for tree-sitter execution.
`src/scoping/langs.rs`	Registers the new `json` language module.
`src/main.rs`	Adds `--json` CLI scope group and hooks JSON into the language-scope selection macro.
`tests/langs/mod.rs`	Extends language scoper tests to include JSON prepared queries and custom-query compilation checks.
`tests/langs/json/base.json`	Adds JSON(+comments) fixture data used by snapshot tests.
`tests/langs/snapshots/r#mod__langs__base.json_*.snap`	Snapshot baselines for each JSON prepared query scope.
`README.md`	Updates generated CLI help section to include JSON flags and prepared query list.
`Cargo.toml`	Adds `tree-sitter-json = "0.24.8"` dependency.
`Cargo.lock`	Locks `tree-sitter-json` and updates dependency graph accordingly.

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selfagency · 2026-05-11T01:25:01Z

+impl PreparedQuery {
+    /// Returns the tree-sitter query string for this prepared query.
+    #[must_use]
+    pub const fn as_string(self) -> &'static str {
+        #[allow(clippy::match_same_arms)]


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Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

selfagency and others added 2 commits May 9, 2026 12:57

Copilot AI review requested due to automatic review settings May 9, 2026 17:31

Copilot started reviewing on behalf of selfagency May 9, 2026 17:32 View session

Copilot AI reviewed May 9, 2026

View reviewed changes

Potential fix for pull request finding

830ec95

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

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JSON language support#282

JSON language support#282
selfagency wants to merge 3 commits into
alexpovel:mainfrom
selfagency:feature/json-language-support

selfagency commented May 9, 2026

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selfagency commented May 9, 2026

Summary

Changes

Core Features

Prepared Query Coverage

CLI Integration

Test Coverage

Examples

Basic usage

Complex scoping

Test Results

Technical Details

Query Fixes Applied

Dependencies

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Pull request overview

Reviewed changes

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selfagency May 11, 2026

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