Replace generic Node payload fields with typed Payload union#9033

Merged

rtfeldman merged 91 commits into

mainfrom

remove-extra-data

Jan 18, 2026

Commits on Jan 1, 2026

Add Payload unions and reduce extra_data usage in NodeStore

rtfeldman
and
claude
committed

Commits on Jan 2, 2026

wip
rtfeldman
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Migrate more Node getters and replace functions to use payload union
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Migrate addIfBranch to use payload union
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Convert more to extra_data
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Migrate statement_import to typed payload struct
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Clarify critical hard constraints in migration document
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Make crystal clear: extra_data must be completely eliminated, not just reduced
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Fix serialization of match_branch_redundant_data
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Migrate statement_import to typed payload - remove extra_data usage
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Update progress: 172 extra_data references remaining (40% reduction)
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Add detailed next steps for continuing the migration
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Add explicit line numbers and detailed migration guidance for high-impact node types
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Migrate expr_call, expr_record, expr_match, expr_closure, expr_lambda, expr_if_then_else, expr_zero_argument_tag to typed payloads
rtfeldman
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Migrate pattern_list, expr_num, expr_dec, pattern_num_literal, pattern_dec_literal to use specialized int_values and dec_values lists
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Migrate expr_nominal_external to packed payload struct
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Fix replaceExprWithNum and replaceExprWithZeroArgumentTag helpers to use typed payloads
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Add checkpoint documentation for 67% completion of extra_data migration
rtfeldman
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Commits on Jan 3, 2026

Commits on Jan 15, 2026

Commits on Jan 16, 2026

Commits on Jan 18, 2026

Replace _unused fields with explicit _padding byte arrays

rtfeldman
and
claude
committed

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