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renamed '=' to '=copy' [backport:1.2] (#15585)

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* Assign hook name changed to `=copy`
* Adapt destructors.rst
* [nobackport] Duplicate tests for =copy hook
* Fix tests
* added a changelog entry

Co-authored-by: Clyybber <darkmine956@gmail.com>
This commit is contained in:
Andreas Rumpf 2020-10-15 12:52:30 +02:00 • committed by GitHub
commit da4aa2e1fb
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17 changed files with 1001 additions and 29 deletions
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4
compiler/injectdestructors.nim
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@ -235,7 +235,7 @@ template isUnpackedTuple(n: PNode): bool =
proc checkForErrorPragma(c: Con; t: PType; ri: PNode; opname: string) =
var m = "'" & opname & "' is not available for type <" & typeToString(t) & ">"
if opname == "=" and ri != nil:
if (opname == "=" or opname == "=copy") and ri != nil:
m.add "; requires a copy because it's not the last read of '"
m.add renderTree(ri)
m.add '\''
@ -319,7 +319,7 @@ proc genCopy(c: var Con; dest, ri: PNode): PNode =
if tfHasOwned in t.flags and ri.kind != nkNilLit:
# try to improve the error message here:
if c.otherRead == nil: discard isLastRead(ri, c)
c.checkForErrorPragma(t, ri, "=")
c.checkForErrorPragma(t, ri, "=copy")
result = c.genCopyNoCheck(dest, ri)
proc genDiscriminantAsgn(c: var Con; s: var Scope; n: PNode): PNode =