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pragma on/off improvements; endb rewritten

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This commit is contained in:
Araq 2012-01-28 23:22:44 +01:00
commit 8d19a93f1a
23 changed files with 517 additions and 202 deletions
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14
compiler/semstmts.nim
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@ -17,7 +17,7 @@ proc semWhen(c: PContext, n: PNode, semCheck = true): PNode =
# the correct branch. Otherwise the AST will be passed through semStmt.
result = nil
template set_result(e: expr) =
template setResult(e: expr) =
if semCheck: result = semStmt(c, e) # do not open a new scope!
else: result = e
@ -27,17 +27,17 @@ proc semWhen(c: PContext, n: PNode, semCheck = true): PNode =
of nkElifBranch:
checkSonsLen(it, 2)
var e = semAndEvalConstExpr(c, it.sons[0])
if (e.kind != nkIntLit): InternalError(n.info, "semWhen")
if (e.intVal != 0) and (result == nil):
set_result(it.sons[1])
of nkElse:
if e.kind != nkIntLit: InternalError(n.info, "semWhen")
if e.intVal != 0 and result == nil:
setResult(it.sons[1])
of nkElse:
checkSonsLen(it, 1)
if result == nil:
set_result(it.sons[0])
setResult(it.sons[0])
else: illFormedAst(n)
if result == nil:
result = newNodeI(nkNilLit, n.info)
# The ``when`` statement implements the mechanism for platform dependant
# The ``when`` statement implements the mechanism for platform dependent
# code. Thus we try to ensure here consistent ID allocation after the
# ``when`` statement.
IDsynchronizationPoint(200)