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new-style concepts implementation, WIP (#15251)

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* fixes #15210 [backport:1.2]

* make tests green
* make ordinal work
* makes Swapable test compile
* make Indexable example work
* concepts: 'self' is now 'Self'
* concepts: make Dictionary example compile
* document the new concept implementation
* concepts: make typeDesc work properly
* concepts: allow documentation comments (d'oh)
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Andreas Rumpf 2021-02-24 13:17:33 +01:00 • committed by GitHub
commit 6278b5d89a
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19 changed files with 528 additions and 59 deletions
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16
compiler/parser.nim
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@ -2000,12 +2000,18 @@ proc parseTypeClass(p: var Parser): PNode =
#| &IND{>} stmt
result = newNodeP(nkTypeClassTy, p)
getTok(p)
var args = newNodeP(nkArgList, p)
result.add(args)
args.add(p.parseTypeClassParam)
while p.tok.tokType == tkComma:
getTok(p)
if p.tok.tokType == tkComment:
skipComment(p, result)
if p.tok.indent < 0:
var args = newNodeP(nkArgList, p)
result.add(args)
args.add(p.parseTypeClassParam)
while p.tok.tokType == tkComma:
getTok(p)
args.add(p.parseTypeClassParam)
else:
result.add(p.emptyNode) # see ast.isNewStyleConcept
if p.tok.tokType == tkCurlyDotLe and p.validInd:
result.add(parsePragma(p))
else: