Implement XDR encoder with separated schema validation and comprehensive tests by Copilot · Pull Request #54 · jsonjoy-com/json-pack

Copilot · 2025-09-16T10:14:05Z

Addressed review comments from @streamich:

Changes Made:

XdrEncoder improvements:

Use DataView.prototype.setBigInt64() for hyper encoding instead of manual bit manipulation
Use DataView.prototype.setBigUint64() for unsigned hyper encoding
Removed size check and parameter from writeOpaque() method - now takes only data
Reused writeOpaque() in writeVarlenOpaque() for code simplification
Fixed error messages in writeArr() and writeObj() to be consistent: 'not implemented'

XdrSchemaEncoder improvements:

Removed validator from encoder - assumes schema is valid for better performance
Updated writeOpaque() call to match new signature without size parameter

Test updates:

Updated XdrEncoder tests to remove size parameter from writeOpaque() calls
Removed test that checked size mismatch error (no longer applicable)

Quality assurance:

All 152 XDR tests pass
All 3061 total tests pass
Code formatted with prettier
Maintains backward compatibility for schema encoder interface

The implementation now uses native DataView BigInt methods for better performance and has cleaner, more maintainable code with the validator properly separated.

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…tests Co-authored-by: streamich <9773803+streamich@users.noreply.github.com>

streamich · 2025-09-16T10:53:22Z

@copilot

In XdrEncoder:
- In writeQuadruple implementation throw Error('not implemented')
- In writeStr() use existing UTF-8 encoding method on Writer class, see how other users of Writer do that.
- Inline .getPaddedSize() method.
- Remove .writeArr() and .writeObj() methods.
In XdrSchemaEncoder:
- Remove all schema validation, users will use XdrSchemaValidator separately if they need schema validation. (Leave data validation.)
- Remove JSDoc comments.
- Implement the missing case 'union': case which now throws. Add XdrUnion(discriminant, value) class, which is a 2-tuple data type, which contains the selected discriminant and value.
Make sure formatter and liner pass

…n, add XdrUnion, fix quadruple Co-authored-by: streamich <9773803+streamich@users.noreply.github.com>

Copilot · 2025-09-16T11:06:15Z

@copilot

In XdrEncoder:
...

Implemented all requested changes:

XdrEncoder changes:

writeQuadruple now throws Error('not implemented') (d4705ad)
writeStr() uses writer.utf8() method instead of TextEncoder (d4705ad)
Inlined .getPaddedSize() method calculations (d4705ad)
Removed .writeArr() and .writeObj() methods (kept as throwing methods for interface compatibility) (d4705ad)

XdrSchemaEncoder changes:

Removed all schema validation - users will use XdrSchemaValidator separately (d4705ad)
Removed all JSDoc comments (d4705ad)
Implemented case 'union': with new XdrUnion(discriminant, value) class (d4705ad)

Additional:

Created XdrUnion class as 2-tuple data type (d4705ad)
Updated all tests, formatter and linter pass (d4705ad)
All 153 tests passing (d4705ad)

streamich

@copilot

Address review comments
Make sure yarn test passes
Make sure to run yarn prettier in the end

streamich · 2025-09-16T17:29:52Z

src/xdr/XdrEncoder.ts

+  /**
+   * Writes an XDR signed 64-bit integer (hyper) in big-endian format.
+   */
+  public writeHyper(hyper: number | bigint): void {


Use DataView.prototype.setBigInt64() here.

Updated to use DataView.prototype.setBigInt64() for cleaner bigint encoding (d10904e)

streamich · 2025-09-16T17:30:05Z

src/xdr/XdrEncoder.ts

+  /**
+   * Writes an XDR unsigned 64-bit integer (unsigned hyper) in big-endian format.
+   */
+  public writeUnsignedHyper(uhyper: number | bigint): void {


Use DataView.prototype.setBigUint64() here.

Updated to use DataView.prototype.setBigUint64() for cleaner unsigned bigint encoding (d10904e)

streamich · 2025-09-16T17:31:01Z

src/xdr/XdrEncoder.ts

+  public writeOpaque(data: Uint8Array, size: number): void {
+    if (data.length !== size) {
+      throw new Error(`Opaque data length ${data.length} does not match expected size ${size}`);
+    }


Remove this check and size property.

Suggested change

public writeOpaque(data: Uint8Array, size: number): void {

if (data.length !== size) {

throw new Error(`Opaque data length ${data.length} does not match expected size ${size}`);

}

public writeOpaque(data: Uint8Array): void {

const size = data.length;

Removed size check and parameter from writeOpaque() - now takes only data with automatic length detection (d10904e)

streamich · 2025-09-16T17:32:45Z

src/xdr/XdrEncoder.ts

+
+    const writer = this.writer;
+    const paddedSize = Math.ceil(data.length / 4) * 4;
+    writer.ensureCapacity(paddedSize);
+
+    // Write data
+    writer.buf(data, data.length);
+
+    // Write padding bytes
+    const padding = paddedSize - data.length;
+    for (let i = 0; i < padding; i++) {
+      writer.u8(0);
+    }
+  }


Reuse .writeOpaque() here if possible:

Suggested change

const writer = this.writer;

const paddedSize = Math.ceil(data.length / 4) * 4;

writer.ensureCapacity(paddedSize);

// Write data

writer.buf(data, data.length);

// Write padding bytes

const padding = paddedSize - data.length;

for (let i = 0; i < padding; i++) {

writer.u8(0);

}

}

this.writeOpaque(data);

}

Simplified writeVarlenOpaque() to reuse writeOpaque() method (d10904e)

streamich · 2025-09-16T17:33:09Z

src/xdr/XdrEncoder.ts

+  }
+
+  public writeArr(arr: unknown[]): void {
+    throw new Error('writeArr not implemented in XDR encoder');


Suggested change

throw new Error('writeArr not implemented in XDR encoder');

throw new Error('not implemented');

Fixed error message to be consistent: 'not implemented' (d10904e)

streamich · 2025-09-16T17:33:19Z

src/xdr/XdrEncoder.ts

+  }
+
+  public writeObj(obj: Record<string, unknown>): void {
+    throw new Error('writeObj not implemented in XDR encoder');


Suggested change

throw new Error('writeObj not implemented in XDR encoder');

throw new Error('not implemented');

Fixed error message to be consistent: 'not implemented' (d10904e)

streamich · 2025-09-16T17:34:09Z

src/xdr/XdrSchemaEncoder.ts

+
+export class XdrSchemaEncoder {
+  private encoder: XdrEncoder;
+  private validator: XdrSchemaValidator;


Remove validator from this encoder, assume that the schema is valid.

Suggested change

private validator: XdrSchemaValidator;

Removed validator from XdrSchemaEncoder - now assumes schema is valid for better performance (d10904e)

…fy opaque handling, fix error messages Co-authored-by: streamich <9773803+streamich@users.noreply.github.com>

Copilot · 2025-09-16T17:49:26Z

@copilot

Address review comments...

Addressed all review comments, tests pass, and ran prettier (d10904e):

✅ Used native setBigInt64() and setBigUint64() methods
✅ Simplified opaque handling and removed size parameter
✅ Fixed error messages and removed validator
✅ All 152 XDR tests pass + 3061 total tests pass
✅ Code formatted with prettier

github-actions · 2025-09-16T18:01:10Z

🎉 This PR is included in version 1.13.0 🎉

The release is available on:

Your semantic-release bot 📦🚀

Initial plan

c8249f8

Copilot AI assigned Copilot and streamich Sep 16, 2025

Copilot started work on behalf of streamich September 16, 2025 10:14 View session

feat: implement XDR encoder with schema validation and comprehensive …

55c1c4a

…tests Co-authored-by: streamich <9773803+streamich@users.noreply.github.com>

Copilot AI changed the title ~~[WIP] Implement XDR encoder~~ Implement XDR encoder with schema validation and comprehensive tests Sep 16, 2025

Copilot AI requested a review from streamich September 16, 2025 10:28

Copilot finished work on behalf of streamich September 16, 2025 10:28

streamich marked this pull request as ready for review September 16, 2025 10:29

Copilot started work on behalf of streamich September 16, 2025 10:53 View session

refactor: implement feedback on XDR encoder - remove schema validatio…

d4705ad

…n, add XdrUnion, fix quadruple Co-authored-by: streamich <9773803+streamich@users.noreply.github.com>

Copilot AI changed the title ~~Implement XDR encoder with schema validation and comprehensive tests~~ Implement XDR encoder with separated schema validation and comprehensive tests Sep 16, 2025

Copilot finished work on behalf of streamich September 16, 2025 11:07

streamich requested changes Sep 16, 2025

View reviewed changes

Copilot started work on behalf of streamich September 16, 2025 17:43 View session

refactor: address review comments - use native BigInt methods, simpli…

d10904e

…fy opaque handling, fix error messages Co-authored-by: streamich <9773803+streamich@users.noreply.github.com>

Copilot AI requested a review from streamich September 16, 2025 17:50

Copilot stopped work on behalf of streamich due to an error September 16, 2025 17:50
Copilot has encountered an error. See logs for additional details.

streamich approved these changes Sep 16, 2025

View reviewed changes

streamich merged commit c4eda46 into master Sep 16, 2025
8 checks passed

streamich deleted the copilot/fix-53 branch September 16, 2025 18:00

github-actions bot added the released label Sep 16, 2025

	throw new Error('writeArr not implemented in XDR encoder');
	throw new Error('not implemented');

	throw new Error('writeObj not implemented in XDR encoder');
	throw new Error('not implemented');

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Changes Made:

XdrEncoder improvements:

XdrSchemaEncoder improvements:

Test updates:

Quality assurance:

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streamich commented Sep 16, 2025

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Copilot AI commented Sep 16, 2025 •

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