The shell validation script now uses a structural comparison that
ignores expected numeric differences in kind/flags/token/operator
values between TS5 and TS7. Only truly structural diffs cause failure.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Implement the core components for translating tsgo's binary AST format
into the JSON format expected by the Java extractor:
- decoder.go: Binary AST format parser with random-access node accessors
(kind, pos, end, flags, children, strings, extended data)
- converter.go: Walks decoded AST and produces JSON matching Node.js
wrapper output (augmented , , , ,
isTypeOnly, HeritageClause token, TypeOperator operator)
- childprops.go: Maps ~100 SyntaxKind names to ordered child property
name lists for correct bitmask-to-property assignment
- scanner.go: TypeScript tokenizer producing array with rescan
support for regex, template, and greater-than disambiguation
Update metadata.go with correct TS7 SyntaxKind iota values and export
metadata functions. Wire decoder+converter through TsgoParser.Parse().
Validation test passes: all 421 diffs are expected TS5-vs-TS7 numeric
kind/flags/token/operator value differences. Zero structural diffs.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
The script was calling wrappers in single-file CLI mode, but neither
wrapper supports that (they read commands from stdin). Now sends
parse + quit commands via stdin and uses `timeout` to avoid hangs.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Add initial scaffolding for a Go process that will replace the Node.js
TypeScript parser wrapper, preparing for TypeScript 7's Go-based compiler.
The Go wrapper implements the same stdin/stdout line-delimited JSON
protocol as the existing Node.js wrapper (lib/typescript/src/main.ts),
making it a drop-in replacement from the Java extractor's perspective.
Key components:
- Protocol handler matching the Node.js wrapper's command set
(get-metadata, prepare-files, parse, reset, quit)
- Parser backend interface with tsgo subprocess implementation
using the tsgo --api --async JSON-RPC mode (LSP Content-Length framing)
- AST property whitelist matching the ~90 properties from the Node.js wrapper
- Static TS7 SyntaxKind and NodeFlags metadata mappings
- Validation framework for comparing JSON output between wrappers
- Integration tests demonstrating successful tsgo API communication:
initialize, updateSnapshot (project opening), getSourceFile
Key finding: the tsgo API returns binary-encoded ASTs (not JSON),
requiring a decoder for the custom flat-node-array format. See
microsoft/typescript-go/internal/api/encoder/ for the format spec.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
`this` didn't refer to anything specific, and it was in fact `undefined` in the context it was invoked. There was already a `let typeTable = this;` further up (where `this` refers to the class instance), so I used `typeTable`.
