Description
This page lists all the major token classes of the Ivory language.
Identifiers
Identifiers refer to a named program element. Unlike C, Ivory does not require the lexer to distinguish typenames.
Typenames have the following regular expression:
[a-zA-Z][0-9a-zA-Z_]*
Literals
Literals specify a value.
Integer can be given in decimal, hexidecimal, or octal
Decimal literals have the following regular expression:
[0-9]*
Octal literals have the following regular expression:
0[0-7]*
Hexidecimal literals have the following regular expression:
0x[0-9a-f]*
Floating point literals give a floating point value. They have the following regular expression:
[0-9]*"."[0-9]?([eE][+-]?[0-9]*)?
String and character literals behave exactly as they do in C. String literals are enclosed in double quotes, and character literals are in single quotes. Both observe C-style escape sequences. Adjacent string literals are combined into one.
Comments
The
//sequence ignores the rest of the line. Additionally, anything inside a
/*and a
*/is ignored. Ivory supports nested comments, unlike C.
Operators
The following operators are recognized:
- &
- &&
- &=
- ->
- =
- |
- ||
- |=
- |<
- >|
- ^
- :
- /
- /=
- .
- ==
- !
- <
- >
- <=
- >=
- <<
- >>
- <<=
- >>=
- {
- }
- [
- ]
- (
- )
- -
- --
- -=
- %
- %=
- !=
- ?
- +
- ++
- +=
- ...
- ;
- *
- *=
- ^=
- ~
Keywords
The reserved words are recognized:
- asm
- break
- case
- const
- catch
- continue
- default
- do
- else
- enum
- export
- exception
- extern
- final
- for
- global
- if
- import
- include
- inline
- private
- public
- pure
- return
- restrict
- shared
- signed
- signature
- sizeof
- static
- strict
- struct
- switch
- template
- throw
- type
- union
- unsigned
- volatile
- while
