implement RFCs/294 ; disallow enum <=> enum conversion (#16351)
* fix https://github.com/nim-lang/RFCs/issues/294 ; disallow enum <=> enum conversion * fix the runnableExamples that was the instigator of this RFC * legacy -d:nimLegacyConvEnumEnum * use -d:nimLegacyConvEnumEnum in important_package nimgame2 * add test for enum cast * improve changelog * add changelog: Changes affecting backward compatibility * cleanup changelog * fix changelog
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58
changelog.md
58
changelog.md
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@ -2,6 +2,40 @@
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## Changes affecting backward compatibility
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- `repr` now doesn't insert trailing newline; previous behavior was very inconsistent,
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see #16034. Use `-d:nimLegacyReprWithNewline` for previous behavior.
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- An enum now can't be converted to another enum directly, you must use `ord` (or `cast`, but
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compiler won't help if you misuse it).
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```
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type A = enum a1, a2
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type B = enum b1, b2
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doAssert not compiles(a1.B)
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doAssert compiles(a1.ord.B)
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```
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for a transition period, use `-d:nimLegacyConvEnumEnum`.
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- Type mismatch errors now show more context, use `-d:nimLegacyTypeMismatch` for previous
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behavior.
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- `echo` and `debugEcho` will now raise `IOError` if writing to stdout fails. Previous behavior
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silently ignored errors. See #16366. Use `-d:nimLegacyEchoNoRaise` for previous behavior.
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- `math.round` now is rounded "away from zero" in JS backend which is consistent
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with other backends. See #9125. Use `-d:nimLegacyJsRound` for previous behavior.
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- Changed the behavior of `uri.decodeQuery` when there are unencoded `=`
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characters in the decoded values. Prior versions would raise an error. This is
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no longer the case to comply with the HTML spec and other languages
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implementations. Old behavior can be obtained with
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`-d:nimLegacyParseQueryStrict`. `cgi.decodeData` which uses the same
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underlying code is also updated the same way.
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- In `std/os`, `getHomeDir`, `expandTilde`, `getTempDir`, `getConfigDir` now do not include trailing `DirSep`,
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unless `-d:nimLegacyHomeDir` is specified (for a transition period).
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## Standard library additions and changes
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- Added `sections` iterator in `parsecfg`.
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@ -84,9 +118,6 @@
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- Added a simpler to use `io.readChars` overload.
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- `repr` now doesn't insert trailing newline; previous behavior was very inconsistent,
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see #16034. Use `-d:nimLegacyReprWithNewline` for previous behavior.
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- Added `**` to jsffi.
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- `writeStackTrace` is available in JS backend now.
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@ -109,9 +140,6 @@
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- Added `math.isNaN`.
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- `echo` and `debugEcho` will now raise `IOError` if writing to stdout fails. Previous behavior
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silently ignored errors. See #16366. Use `-d:nimLegacyEchoNoRaise` for previous behavior.
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- Added `jsbigints` module, arbitrary precision integers for JavaScript target.
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- Added `math.copySign`.
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@ -130,18 +158,8 @@
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- Added `posix_utils.osReleaseFile` to get system identification from `os-release` file on Linux and the BSDs.
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https://www.freedesktop.org/software/systemd/man/os-release.html
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- `math.round` now is rounded "away from zero" in JS backend which is consistent
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with other backends. See #9125. Use `-d:nimLegacyJsRound` for previous behavior.
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- Added `socketstream` module that wraps sockets in the stream interface
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- Changed the behavior of `uri.decodeQuery` when there are unencoded `=`
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characters in the decoded values. Prior versions would raise an error. This is
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no longer the case to comply with the HTML spec and other languages
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implementations. Old behavior can be obtained with
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`-d:nimLegacyParseQueryStrict`. `cgi.decodeData` which uses the same
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underlying code is also updated the same way.
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- Added `sugar.dumpToString` which improves on `sugar.dump`.
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- Added `math.signbit`.
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@ -235,7 +253,6 @@
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- Added `jscore.debugger` to [call any available debugging functionality, such as breakpoints.](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/debugger).
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- Added `std/channels`.
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- Added `htmlgen.portal` for [making "SPA style" pages using HTML only](https://web.dev/hands-on-portals).
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@ -243,9 +260,6 @@
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- Added `ZZZ` and `ZZZZ` patterns to `times.nim` `DateTime` parsing, to match time
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zone offsets without colons, e.g. `UTC+7 -> +0700`.
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- In `std/os`, `getHomeDir`, `expandTilde`, `getTempDir`, `getConfigDir` now do not include trailing `DirSep`,
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unless `-d:nimLegacyHomeDir` is specified (for a transition period).
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- Added `jsconsole.dir`, `jsconsole.dirxml`, `jsconsole.timeStamp`.
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- Added dollar `$` and `len` for `jsre.RegExp`.
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@ -254,7 +268,6 @@
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- Added `hasClosure` to `std/typetraits`.
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- Added `genasts.genAst` that avoids the problems inherent with `quote do` and can
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be used as a replacement.
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@ -304,9 +317,6 @@
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- VM now supports `addr(mystring[ind])` (index + index assignment)
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- Type mismatch errors now show more context, use `-d:nimLegacyTypeMismatch` for previous
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behavior.
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- Added `--hintAsError` with similar semantics as `--warningAsError`.
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- TLS: OSX now uses native TLS (`--tlsEmulation:off`), TLS now works with importcpp non-POD types,
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