Fix it so YAML integer types can be used where Go int types are expected.

[bep]

E.g. in date.AddDate.

In Hugo v0.152.0 we moved to a new YAML library (github.com/goccy/go-yaml) which produces uint64 for unsigned integers.

This unfortunately breaks common constructs like:

.Date.AddDate 0 0 7

when .Date is a time.Time and the integers are unmarshaled from YAML front matter.

This commit adds code to handle conversion from uint64 (and other int types) to the required int types where possible.

Fixes #14079

[Copilot]

Pull Request Overview

This PR fixes an issue where YAML integer types (specifically uint64) from the goccy/go-yaml library cannot be used where Go int types are expected, such as in time.Time.AddDate(). The fix adds type conversion logic to handle conversions between different integer types (uint to int, int to int) with overflow checking.

• Adds ConvertIfPossible function to handle safe integer type conversions with overflow detection
• Integrates the conversion logic into the template execution engine's type validation
• Adds comprehensive test coverage for the conversion logic and the original issue scenario

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
common/hreflect/helpers.go	Implements ConvertIfPossible function for safe integer type conversions
common/hreflect/helpers_test.go	Adds test cases for integer conversion with overflow scenarios
tpl/internal/go_templates/texttemplate/hugo_template.go	Adds new validateType method that uses ConvertIfPossible for type validation
tpl/internal/go_templates/texttemplate/exec.go	Renames existing validateType to _validateType to avoid conflict
tpl/templates/templates_integration_test.go	Adds integration test verifying YAML integers work with AddDate

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[Copilot]

Pull Request Overview

Copilot reviewed 8 out of 8 changed files in this pull request and generated 10 comments.

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[Copilot]

Corrected date format string from '2006-01-06' to '2006-01-02'. The format string uses reference time 'Mon Jan 2 15:04:05 MST 2006' where day is '02', not '06'.