forked from Mirror/wren
58e4d26648
Get rid of the separate opt-in IO class and replace it with a core System class. - Remove wren_io.c, wren_io.h, and io.wren. - Remove the flags that disable it. - Remove the overloads for print() with different arity. (It was an experiment, but I don't think it's that useful.) - Remove IO.read(). That will reappear using libuv in the CLI at some point. - Remove IO.time. Doesn't seem to have been used. - Update all of the tests, docs, etc. I'm sorry for all the breakage this causes, but I think "System" is a better name for this class (it makes it natural to add things like "System.gc()") and frees up "IO" for referring to the CLI's IO module.
47 lines
1.8 KiB
Plaintext
47 lines
1.8 KiB
Plaintext
// Returns characters (as strings).
|
|
System.print("abcd"[0]) // expect: a
|
|
System.print("abcd"[1]) // expect: b
|
|
System.print("abcd"[2]) // expect: c
|
|
System.print("abcd"[3]) // expect: d
|
|
|
|
// Allows indexing backwards from the end.
|
|
System.print("abcd"[-4]) // expect: a
|
|
System.print("abcd"[-3]) // expect: b
|
|
System.print("abcd"[-2]) // expect: c
|
|
System.print("abcd"[-1]) // expect: d
|
|
|
|
// Regression: Make sure the string's internal buffer size is correct.
|
|
System.print("abcd"[1] == "b") // expect: true
|
|
|
|
// Indexes by byte, not code point.
|
|
//
|
|
// Bytes: 11111
|
|
// 012345678901234
|
|
// Chars: sø mé ஃ thî ng
|
|
System.print("søméஃthîng"[0]) // expect: s
|
|
System.print("søméஃthîng"[1]) // expect: ø
|
|
System.print("søméஃthîng"[3]) // expect: m
|
|
System.print("søméஃthîng"[6]) // expect: ஃ
|
|
System.print("søméஃthîng"[10]) // expect: h
|
|
System.print("søméஃthîng"[-1]) // expect: g
|
|
System.print("søméஃthîng"[-2]) // expect: n
|
|
System.print("søméஃthîng"[-4]) // expect: î
|
|
|
|
// If the subscript is in the middle of a UTF-8 sequence, return the raw byte.
|
|
System.print("søméஃthîng"[2] == "\xb8") // expect: true
|
|
System.print("søméஃthîng"[7] == "\xae") // expect: true
|
|
System.print("søméஃthîng"[8] == "\x83") // expect: true
|
|
System.print("søméஃ"[-1] == "\x83") // expect: true
|
|
System.print("søméஃ"[-2] == "\xae") // expect: true
|
|
|
|
// 8-bit clean.
|
|
System.print("a\0b\0c"[0] == "a") // expect: true
|
|
System.print("a\0b\0c"[1] == "\0") // expect: true
|
|
System.print("a\0b\0c"[2] == "b") // expect: true
|
|
System.print("a\0b\0c"[3] == "\0") // expect: true
|
|
System.print("a\0b\0c"[4] == "c") // expect: true
|
|
|
|
// Returns single byte strings for invalid UTF-8 sequences.
|
|
System.print("\xef\xf7"[0] == "\xef") // expect: true
|
|
System.print("\xef\xf7"[1] == "\xf7") // expect: true
|