add new cast implementation for complex types #6278
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Casting of complex types is implemented in runtime/sam/expr/shaper.go. Replace it with a new implementation in runtime/sam/expr/function/cast.go with these differences: * Preserves target type field order when casting records * Able to cast maps * More maintainable
mattnibs
approved these changes
Oct 3, 2025
mccanne
reviewed
Oct 4, 2025
runtime/sam/expr/function/cast.go
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| } | ||
| return c.cast(from, typ) | ||
| } | ||
| return c.sctx.WrapError("cannot cast to "+sup.FormatValue(to), from) |
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Maybe an error here about the second argument when the second arg isn't a type or string, e.g., instead of
; super -c "cast(1,2)"
error({message:"cannot cast to 2",on:1})
maybe
error({message:"cast target must be a type or name of type",on:2})
mccanne
approved these changes
Oct 5, 2025
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Casting of complex types is implemented in runtime/sam/expr/shaper.go.
Replace it with a new implementation in
runtime/sam/expr/function/cast.go with these differences:
Always generates a structured error when casting fails
Preserves target type field order when casting records
Able to cast maps
More maintainable
Fixes #2894
Fixes #4315
Closes #5168
Closes #6023