diff options
| -rw-r--r-- | doc/spec.md | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/doc/spec.md b/doc/spec.md index 6489f7c..051e07c 100644 --- a/doc/spec.md +++ b/doc/spec.md @@ -233,13 +233,12 @@ Comments are treated like other white space. characters are tokens: ```text -+ - * / // % ^ -& | ** << >> -&= |= -. , = ; : ++ - * / // % = ++= -= *= /= //= %= == != +^ < > << >> & | +^= <= >= <<= >>= &= |= +. , ; : ~ ** ( ) [ ] { } -< > >= <= == != -+= -= *= /= //= %= ^= <<= >>= ``` *Keywords*: The following tokens are keywords and may not be used as @@ -274,7 +273,8 @@ The Go implementation permits `assert` to be used as an identifier, and this feature is widely used in its tests. <b>Implementation note:</b> -The Java implementation does not recognize `&` as a valid token. +The Java implementation does not recognize the following tokens: +`&`, `&=`, `|=`, `<<`, `>>`, `<<=`, `>>=`, `^`, `^=`, `~`. *Identifiers*: an identifier is a sequence of Unicode letters, decimal digits, and underscores (`_`), not starting with a digit. @@ -3986,6 +3986,7 @@ eventually to eliminate all such differences on a case-by-case basis. * Integers are represented with infinite precision. * Integer arithmetic is exact. +* Integers support bitwise operators `&`, `|`, `<<`, `>>`, `^`, `~`, and their assignment forms. * Floating-point literals are supported (option: `-float`). * The `float` built-in function is provided (option: `-float`). * Real division using `float / float` is supported (option: `-float`). @@ -3996,10 +3997,9 @@ eventually to eliminate all such differences on a case-by-case basis. * Strings have the additional methods `elem_ords`, `codepoint_ords`, and `codepoints`. * The `chr` and `ord` built-in functions are supported. * The `set` built-in function is provided (option: `-set`). +* `set & set` and `set | set` compute set intersection and union, respectively. * `x += y` rebindings are permitted at top level. * `assert` is a valid identifier. -* `&` is a token; `int & int` and `set & set` are supported. -* `int | int` is supported. * The parser accepts unary `+` expressions. * A method call `x.f()` may be separated into two steps: `y = x.f; y()`. * Dot expressions may appear on the left side of an assignment: `x.f = 1`. |