reindex_file_impl
Re-parses a C/C++ source file to update its symbols in the index, with optional full LLM analysis and method override regeneration. Allows incremental re-indexing without a full project rebuild.
Instructions
Re-parse a single source file with libclang and update its symbols in the index.
Shared implementation used by reindex_file (public tool, full analysis) and
_auto_reindex_stale (background fast path, no LLM). Prefer reindex_file
for interactive use; call this directly only when you need to control
with_analysis explicitly.
Requires an existing index (fw-context index must have been run first).
The file must appear in compile_commands.json — header-only files are
re-indexed via the .cpp translation unit that includes them.
Args: file_path: Absolute or project-relative path to the source file to re-parse. Must have a matching entry in compile_commands.json. project_root: Project root directory. Auto-detected from cwd if omitted. with_analysis: When True (default), also regenerates LLM symbol analysis and method override relationships — slower but produces a fully up-to-date index. Set to False for a fast symbol-only update (used by background auto-reindex).
Returns:
On success — dict with keys:
file (str): Resolved absolute path to the re-indexed file.
translation_units (int): Number of TUs that include this file.
symbols_updated (int): Number of symbols written/updated.
elapsed_s (float): Parse + store time in seconds.
analysis_updated (int, optional): Symbol count with fresh LLM
analysis (only present when LLM analysis is enabled and
with_analysis=True).
analysis_warning (str, optional): Reason LLM analysis was skipped.
overrides_warning (str, optional): Reason override analysis was skipped.
warning (str, optional): Header re-indexed via a single TU — other
TUs including this header may still have stale symbols; run
fw-context index for full accuracy.
On error — dict with key:
error (str): Human-readable reason (no index found, file not found,
file not in compile_commands.json, no build config indexed).
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| file_path | Yes | Absolute or project-relative path to the source file to re-parse. Must have a matching entry in compile_commands.json. | |
| project_root | No | Project root directory. Auto-detected from cwd if omitted. | |
| with_analysis | No | When True (default), also regenerates LLM symbol analysis and method override relationships — slower but produces a fully up-to-date index. Set False for a fast symbol-only update (used by background auto-reindex). |