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documented hygienic templates; made tests green; fixed system.clamp

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This commit is contained in:
Araq
2012-08-22 22:46:02 +02:00
parent a95e958046
commit f893179889
11 changed files with 123 additions and 48 deletions
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19
compiler/semtempl.nim
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@@ -52,7 +52,9 @@ proc symChoice(c: PContext, n: PNode, s: PSym): PNode =
if i > 1: break
if i <= 1:
# XXX this makes more sense but breaks bootstrapping for now:
# and s.kind notin routineKinds:
# (s.kind notin routineKinds or s.magic != mNone):
# for some reason 'nextTry' is copied and considered as a candidate in
# tables.nim
result = newSymNode(s, n.info)
markUsed(n, s)
else:
@@ -68,12 +70,19 @@ proc symChoice(c: PContext, n: PNode, s: PSym): PNode =
proc semBindStmt(c: PContext, n: PNode, toBind: var TIntSet): PNode =
for i in 0 .. < n.len:
var a = n.sons[i]
# If 'a' is an overloaded symbol, we use the first symbol as a 'witness'
# and use the fact that subsequent lookups will yield the same symbol!
# This is currently the case due to the hash table's implementation...
# If 'a' is an overloaded symbol, we used to use the first symbol
# as a 'witness' and use the fact that subsequent lookups will yield
# the same symbol!
# This is however not true anymore for hygienic templates as semantic
# processing for them changes the symbol table...
let s = QualifiedLookUp(c, a)
if s != nil:
toBind.incl(s.id)
# we need to mark all symbols:
let sc = symChoice(c, n, s)
if sc.kind == nkSym:
toBind.incl(sc.sym.id)
else:
for x in items(sc): toBind.incl(x.sym.id)
else:
illFormedAst(a)
result = newNodeI(nkEmpty, n.info)