Backport "Improve asExprOf cast error formatting" to LTS
#20787
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The intention of this change is to make it simpler to read the error
message.
List the expected type and actual type before the expression. This is
usually the most important information and simpler to parse as the
expression can get quite long. For the expected type, the actual type
and the expression, we print the value in the same line if its String
representation has only one line. Otherwise we print it in the next line
with an indentation and extra new line at the end.
Before:
```
java.lang.Exception: Expr cast exception: ((a: scala.Int) => ({
val v: scala.Int = a
Binding.apply[scala.Unit](())
}: Binding[scala.Unit]))
of type: scala.Function1[scala.Int, scala.Unit]
did not conform to type: scala.Function1[scala.Int, Binding[scala.Unit]]
at scala.quoted.runtime.impl.QuotesImpl.asExprOf(QuotesImpl.scala:76)
...
```
Example from #19191
After:
```
scala.quoted.runtime.impl.ExprCastException:
Expected type: scala.Function1[scala.Int, scala.Unit]
Actual type: scala.Function1[scala.Int, Binding[scala.Unit]]
Expression:
((a: scala.Int) => ({
val v: scala.Int = a
Binding.apply[scala.Unit](())
}: Binding[scala.Unit]))
at scala.quoted.runtime.impl.QuotesImpl.asExprOf(QuotesImpl.scala:...)
...
```
[Cherry-picked 7480582]
|
No regressions detected in the community build up to lts-19356. |
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Backports #19195 to the LTS branch.
PR submitted by the release tooling.
[skip ci]