feat: per-component handle table allocation and function generation#79
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feat: per-component handle table allocation and function generation#79
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, #71) Implement the first three tasks of epic #69: 1. Identify re-exporter components in the resolver by scanning adapter sites for callee_defines_resource=false operations. 2. Allocate handle table space in the merger: for each re-exporter, grow its memory by 1 page and place a 256-entry i32 handle table at the start of the new page. Add a mutable global for the next-allocation pointer (starts at base+4 to avoid handle=0). 3. Generate three wasm functions per re-exporter: - ht_new: store rep at next_ptr, return aligned handle, advance by 4 - ht_rep: i32.load rep from handle address - ht_drop: i32.store 0 at handle address (mark as freed) All functions use the correct multi-memory index for load/store. Handle addresses are always 4-byte aligned, satisfying wit-bindgen's ResourceTable alignment check (value & 3 == 0). Part of #69. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Summary
callee_defines_resource=falseht_new(store rep, return aligned handle),ht_rep(load rep),ht_drop(zero out entry)ResourceTablealignment checkImplements tasks 1-3 of epic #69. Functions are generated but not yet wired — tasks 4-6 (routing, adapter fixes, graph propagation) will follow.
Part of #69, closes #70, closes #71.
Test plan
MemArgsupport🤖 Generated with Claude Code