mirror of
https://github.com/jashkenas/coffeescript.git
synced 2022-11-09 12:23:24 -05:00
aef54aeaf7
* expansion-rest bug fix * tests; improved implicit call recognition with dots on the left in the `rewriter` * whitespace cleanup * more tests
118 lines
3.1 KiB
CoffeeScript
118 lines
3.1 KiB
CoffeeScript
# Range Literals
|
|
# --------------
|
|
|
|
# TODO: add indexing and method invocation tests: [1..4][0] is 1, [0...3].toString()
|
|
|
|
# shared array
|
|
shared = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
|
|
|
|
test "basic inclusive ranges", ->
|
|
arrayEq [1, 2, 3] , [1..3]
|
|
arrayEq [0, 1, 2] , [0..2]
|
|
arrayEq [0, 1] , [0..1]
|
|
arrayEq [0] , [0..0]
|
|
arrayEq [-1] , [-1..-1]
|
|
arrayEq [-1, 0] , [-1..0]
|
|
arrayEq [-1, 0, 1], [-1..1]
|
|
|
|
test "basic exclusive ranges", ->
|
|
arrayEq [1, 2, 3] , [1...4]
|
|
arrayEq [0, 1, 2] , [0...3]
|
|
arrayEq [0, 1] , [0...2]
|
|
arrayEq [0] , [0...1]
|
|
arrayEq [-1] , [-1...0]
|
|
arrayEq [-1, 0] , [-1...1]
|
|
arrayEq [-1, 0, 1], [-1...2]
|
|
|
|
arrayEq [], [1...1]
|
|
arrayEq [], [0...0]
|
|
arrayEq [], [-1...-1]
|
|
|
|
# Should not trigger implicit call, e.g. rest ... => rest(...)
|
|
arrayEq [1, 2, 3] , [1 ... 4]
|
|
arrayEq [0, 1, 2] , [0 ... 3]
|
|
arrayEq [0, 1] , [0 ... 2]
|
|
arrayEq [0] , [0 ... 1]
|
|
arrayEq [-1] , [-1 ... 0]
|
|
arrayEq [-1, 0] , [-1 ... 1]
|
|
arrayEq [-1, 0, 1], [-1 ... 2]
|
|
|
|
arrayEq [], [1 ... 1]
|
|
arrayEq [], [0 ... 0]
|
|
arrayEq [], [-1 ... -1]
|
|
|
|
test "downward ranges", ->
|
|
arrayEq shared, [9..0].reverse()
|
|
arrayEq [5, 4, 3, 2] , [5..2]
|
|
arrayEq [2, 1, 0, -1], [2..-1]
|
|
|
|
arrayEq [3, 2, 1] , [3..1]
|
|
arrayEq [2, 1, 0] , [2..0]
|
|
arrayEq [1, 0] , [1..0]
|
|
arrayEq [0] , [0..0]
|
|
arrayEq [-1] , [-1..-1]
|
|
arrayEq [0, -1] , [0..-1]
|
|
arrayEq [1, 0, -1] , [1..-1]
|
|
arrayEq [0, -1, -2], [0..-2]
|
|
|
|
arrayEq [4, 3, 2], [4...1]
|
|
arrayEq [3, 2, 1], [3...0]
|
|
arrayEq [2, 1] , [2...0]
|
|
arrayEq [1] , [1...0]
|
|
arrayEq [] , [0...0]
|
|
arrayEq [] , [-1...-1]
|
|
arrayEq [0] , [0...-1]
|
|
arrayEq [0, -1] , [0...-2]
|
|
arrayEq [1, 0] , [1...-1]
|
|
arrayEq [2, 1, 0], [2...-1]
|
|
|
|
test "ranges with variables as enpoints", ->
|
|
[a, b] = [1, 3]
|
|
arrayEq [1, 2, 3], [a..b]
|
|
arrayEq [1, 2] , [a...b]
|
|
b = -2
|
|
arrayEq [1, 0, -1, -2], [a..b]
|
|
arrayEq [1, 0, -1] , [a...b]
|
|
|
|
test "ranges with expressions as endpoints", ->
|
|
[a, b] = [1, 3]
|
|
arrayEq [2, 3, 4, 5, 6], [(a+1)..2*b]
|
|
arrayEq [2, 3, 4, 5] , [(a+1)...2*b]
|
|
|
|
# Should not trigger implicit call, e.g. rest ... => rest(...)
|
|
arrayEq [2, 3, 4, 5] , [(a+1) ... 2*b]
|
|
|
|
test "large ranges are generated with looping constructs", ->
|
|
down = [99..0]
|
|
eq 100, (len = down.length)
|
|
eq 0, down[len - 1]
|
|
|
|
up = [0...100]
|
|
eq 100, (len = up.length)
|
|
eq 99, up[len - 1]
|
|
|
|
test "for-from loops over ranges", ->
|
|
array1 = []
|
|
for x from [20..30]
|
|
array1.push(x)
|
|
break if x is 25
|
|
arrayEq array1, [20, 21, 22, 23, 24, 25]
|
|
|
|
test "for-from comprehensions over ranges", ->
|
|
array1 = (x + 10 for x from [20..25])
|
|
ok array1.join(' ') is '30 31 32 33 34 35'
|
|
|
|
array2 = (x for x from [20..30] when x %% 2 == 0)
|
|
ok array2.join(' ') is '20 22 24 26 28 30'
|
|
|
|
test "#1012 slices with arguments object", ->
|
|
expected = [0..9]
|
|
argsAtStart = (-> [arguments[0]..9]) 0
|
|
arrayEq expected, argsAtStart
|
|
argsAtEnd = (-> [0..arguments[0]]) 9
|
|
arrayEq expected, argsAtEnd
|
|
argsAtBoth = (-> [arguments[0]..arguments[1]]) 0, 9
|
|
arrayEq expected, argsAtBoth
|
|
|
|
test "#1409: creating large ranges outside of a function body", ->
|
|
CoffeeScript.eval '[0..100]'
|