parse and render parameter set directives (record 43)

[anil08607]

Summary

• Implements a dedicated AltiumSchParameterSetRecord (and alias AltiumSchDifferentialPairRecord) for schematic RECORD=43.
• Registers RECORD=43 in recordConstructors to eliminate fallback to AltiumUnknownRecord.
• Adds parameterSets and differentialPairs convenience getters to AltiumSchDoc.
• Adds native SVG rendering for parameter set / differential pair directives (draws connection marker circle and directive name text).

Background

In Altium schematic documents (.SchDoc), RECORD=43 represents a Parameter Set directive (such as Differential Pair directives like DIFFPAIR or net class directives like 1A). Previously, these records had no dedicated class and parsed as AltiumUnknownRecord, leaving directives unrendered in SVG outputs.

Changes

• lib/records/altium-schematic-records.ts:
  • Added name, color, and isDifferentialPair accessors to AltiumSchParameterSetRecord.
  • Exported AltiumSchDifferentialPairRecord alias.
• lib/parser/record-constructors.ts:
  • Registered "43": AltiumSchParameterSetRecord.
• lib/altium-sch-doc.ts:
  • Added parameterSets and differentialPairs getters.
• lib/svg-serialization/serialize-altium-sheet-to-svg.ts:
  • Rendered RECORD=43 directive marker and label.
• tests/schematic-parameter-set.test.ts:
  • Unit tests for AST parsing, ownership, and round-trip preservation.
• tests/svg/schematic-parameter-set.test.ts:
  • Added SVG snapshot test for schematic differential pair directives.
• Updated snapshots:
  • tests/svg/__snapshots__/schematic-component-value-reference.snap.svg (now includes DIFFPAIR directives from stm32-st-link-v2.SchDoc).
  • tests/svg/__snapshots__/schematic-note-text-frame-repro.snap.svg (now includes 1A directive marker from pidp11-io-expander.SchDoc).

[vercel]

@anil08607 is attempting to deploy a commit to the tscircuit Team on Vercel.

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[ShiboSoftwareDev]

just remove the committed artifacts

[tscircuitbot]

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PR Rating: ⭐⭐
Impact: Minor

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