FastAPIParser

reference

1 min readUpdated 2026-07-28

Kind: Class

Source: atloria-monorepo/libs/parser-core/src/parsers/backend/fastapi.parser.ts

FastAPI Parser implementation

Uses regex-based parsing for Python files since we can't use Python AST directly in Node.js

Implements: IParser

Methods

Method	Signature	Returns
`initialize`	`initialize(config: ParserConfig)`	`Promise<void>`
`canParse`	`canParse(filePath: string)`	`boolean`
`parseFile`	`parseFile(filePath: string, content: string)`	`Promise<ParseResult>`
`parseFiles`	`parseFiles(files: ParseFileInput[])`	`Promise<ParseResult[]>`
`destroy`	`destroy()`	`Promise<void>`

FastAPIParser stops the work with an early return when !fileContent.trim().
FastAPIParser stops the work with an early return when !this.isFastAPIFile(fileContent, filePath).
FastAPIParser stops the work with an early return when content.includes('from fastapi') || content.includes('import fastapi') || content.include….
FastAPIParser stops the work with an early return when !m.
FastAPIParser stops the work with an early return when !mounts.length && !reexports.
FastAPIParser stops the work with an early return when segments.length === 0.

FastAPIParser handles failure in 1 place: it turns it into a return value in all 1.