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Range operators!

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Added ".." and "..." infix operators. Num implements them to
return Range objects. Those in turn implement the iterator
protocol, so now numeric for loops are easy:

    for (i in 1..10) { ... }

I also cleaned up the Wren benchmarks to use this.

In the process, I discovered the method_call benchmark really
just showed loop peformance, so I unrolled the loops in all of
the languages to stress method calls.
This commit is contained in:
Bob Nystrom
2013-12-25 15:01:45 -08:00
parent 2b65e47747
commit 507e89d3b3
12 changed files with 209 additions and 44 deletions
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14
test/number/range.wren Normal file
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var inclusive = 2..5
IO.write(inclusive is Range) // expect: true
IO.write(inclusive.min) // expect: 2
IO.write(inclusive.max) // expect: 5
var exclusive = 2...5
IO.write(exclusive is Range) // expect: true
IO.write(exclusive.min) // expect: 2
IO.write(exclusive.max) // expect: 4
// TODO: Non-number RHS.
// TODO: Non-integer RHS.
// TODO: Range iteration.
// TODO: Empty or negative ranges.