diff options
Diffstat (limited to 'compiler')
| -rw-r--r-- | compiler/ccgexprs.nim | 30 |
1 files changed, 17 insertions, 13 deletions
diff --git a/compiler/ccgexprs.nim b/compiler/ccgexprs.nim index 0e8af5af5..56dd0dea2 100644 --- a/compiler/ccgexprs.nim +++ b/compiler/ccgexprs.nim @@ -1587,20 +1587,24 @@ proc genInOp(p: BProc, e: PNode, d: var TLoc) = e.sons[2] initLocExpr(p, ea, a) initLoc(b, locExpr, e, OnUnknown) - b.r = rope("(") var length = sonsLen(e.sons[1]) - for i in countup(0, length - 1): - let it = e.sons[1].sons[i] - if it.kind == nkRange: - initLocExpr(p, it.sons[0], x) - initLocExpr(p, it.sons[1], y) - addf(b.r, "$1 >= $2 && $1 <= $3", - [rdCharLoc(a), rdCharLoc(x), rdCharLoc(y)]) - else: - initLocExpr(p, it, x) - addf(b.r, "$1 == $2", [rdCharLoc(a), rdCharLoc(x)]) - if i < length - 1: add(b.r, " || ") - add(b.r, ")") + if length > 0: + b.r = rope("(") + for i in countup(0, length - 1): + let it = e.sons[1].sons[i] + if it.kind == nkRange: + initLocExpr(p, it.sons[0], x) + initLocExpr(p, it.sons[1], y) + addf(b.r, "$1 >= $2 && $1 <= $3", + [rdCharLoc(a), rdCharLoc(x), rdCharLoc(y)]) + else: + initLocExpr(p, it, x) + addf(b.r, "$1 == $2", [rdCharLoc(a), rdCharLoc(x)]) + if i < length - 1: add(b.r, " || ") + add(b.r, ")") + else: + # handle the case of an empty set + b.r = rope("0") putIntoDest(p, d, e, b.r) else: assert(e.sons[1].typ != nil) |