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structural-search

Search code by AST structure using ast-grep. Find semantic patterns like function calls, imports, class definitions instead of text patterns. Triggers on: find all calls to X, search for pattern, refactor usages, find where function is used, structural search, ast-grep, sg.

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aiskillstore/marketplace

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包含的文件（9）

SKILL.md3.1 KB
assets/rule-template.yaml736 B
references/advanced-usage.md4.3 KB
references/go-rust-patterns.md3.2 KB
references/js-ts-patterns.md2.4 KB
references/python-patterns.md2.3 KB
references/security-patterns.md3.1 KB
scripts/.gitkeep0 B
skill-report.json53.8 KB

SKILL.md（原文）

安装前可以查看交给 AI 代理的指令内容。

Structural Search

Search code by its abstract syntax tree (AST) structure. Finds semantic patterns that regex cannot match reliably.

Tools

Tool	Command	Use For
ast-grep	`sg -p 'pattern'`	AST-aware code search

Pattern Syntax

Pattern	Matches	Example
`$NAME`	Named identifier	`function $NAME() {}`
`$_`	Any single node	`console.log($_)`
`$$$`	Zero or more nodes	`function $_($$$) {}`

Top 10 Essential Patterns

# 1. Find console.log calls
sg -p 'console.log($_)'

# 2. Find React hooks
sg -p 'const [$_, $_] = useState($_)'
sg -p 'useEffect($_, [$$$])'

# 3. Find function definitions
sg -p 'function $NAME($$$) { $$$ }'
sg -p 'def $NAME($$$): $$$' --lang python

# 4. Find imports
sg -p 'import $_ from "$_"'
sg -p 'from $_ import $_' --lang python

# 5. Find async patterns
sg -p 'await $_'
sg -p 'async function $NAME($$$) { $$$ }'

# 6. Find error handling
sg -p 'try { $$$ } catch ($_) { $$$ }'
sg -p 'if err != nil { $$$ }' --lang go

# 7. Find potential issues
sg -p '$_ == $_'           # == instead of ===
sg -p 'eval($_)'           # Security risk
sg -p '$_.innerHTML = $_'  # XSS vector

# 8. Preview refactoring
sg -p 'console.log($_)' -r 'logger.info($_)'

# 9. Apply refactoring
sg -p 'var $NAME = $_' -r 'const $NAME = $_' --rewrite

# 10. Search specific language
sg -p 'pattern' --lang typescript

Quick Reference

Task	Command
Find pattern	`sg -p 'pattern'`
Specific language	`sg -p 'pattern' --lang python`
Replace (preview)	`sg -p 'old' -r 'new'`
Replace (apply)	`sg -p 'old' -r 'new' --rewrite`
Show context	`sg -p 'pattern' -A 3`
JSON output	`sg -p 'pattern' --json`
File list only	`sg -p 'pattern' -l`
Count matches	`sg -p 'pattern' --count`
Run YAML rules	`sg scan`

When to Use

Finding all usages of a function/method
Locating specific code patterns (hooks, API calls)
Preparing for large-scale refactoring
When regex would match false positives
Detecting anti-patterns and security issues
Creating custom linting rules

Additional Resources

For complete patterns, load:

./references/js-ts-patterns.md - JavaScript/TypeScript patterns
./references/python-patterns.md - Python patterns
./references/go-rust-patterns.md - Go and Rust patterns
./references/security-patterns.md - Security vulnerability detection
./references/advanced-usage.md - YAML rules and tool integration
./assets/rule-template.yaml - Starter template for custom rules

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