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fixes #1723: operator precedence in unbounded splice compilation

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This commit is contained in:
Michael Ficarra 2011-09-22 02:14:07 -04:00
parent 3b5c889040
commit 08762a101c
3 changed files with 22 additions and 7 deletions
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2
lib/coffee-script/nodes.js
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@ -1402,7 +1402,7 @@
to = +to.compile(o) - +fromRef;
if (!exclusive) to += 1;
} else {
to = to.compile(o) + ' - ' + fromRef;
to = to.compile(o, LEVEL_ACCESS) + ' - ' + fromRef;
if (!exclusive) to += ' + 1';
}
} else {

2
src/nodes.coffee
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@ -1062,7 +1062,7 @@ exports.Assign = class Assign extends Base
to = +to.compile(o) - +fromRef
to += 1 unless exclusive
else
to = to.compile(o) + ' - ' + fromRef
to = to.compile(o, LEVEL_ACCESS) + ' - ' + fromRef
to += ' + 1' unless exclusive
else
to = "9e9"

25
test/slicing_and_splicing.coffee
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@ -52,6 +52,13 @@ test "string slicing", ->
ok str[0..4] is "abcde"
ok str[-5..] is "vwxyz"
test "#1722: operator precedence in unbounded slice compilation", ->
list = [0..9]
n = 2 # some truthy number in `list`
arrayEq [0..n], list[..n]
arrayEq [0..n], list[..n or 0]
arrayEq [0..n], list[..if n then n else 0]
# Splicing
@ -115,9 +122,17 @@ test "the return value of a splice literal should be the RHS", ->
arrayEq [ary[0..0] = 0], [0]
test "#1722: operator precedence in unbounded slice compilation", ->
test "#1723: operator precedence in unbounded splice compilation", ->
n = 4 # some truthy number in `list`
list = [0..9]
n = 2 # some truthy number in `list`
arrayEq [0..n], list[..n]
arrayEq [0..n], list[..n or 0]
arrayEq [0..n], list[..if n then n else 0]
list[..n] = n
arrayEq [n..9], list
list = [0..9]
list[..n or 0] = n
arrayEq [n..9], list
list = [0..9]
list[..if n then n else 0] = n
arrayEq [n..9], list