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authorAndreas Rumpf <rumpf_a@web.de>2018-04-14 08:42:45 +0200
committerAndreas Rumpf <rumpf_a@web.de>2018-04-14 08:42:53 +0200
commitc6f15c53f458ec0138d006edcaca349281fda753 (patch)
tree5465dc77af558286defa5a7fc7bf8745a8bf431d /doc/manual/about.txt
parent3d1d163efff446bd420a150114b7914c7b34798e (diff)
downloadNim-c6f15c53f458ec0138d006edcaca349281fda753.tar.gz
merge the different manual/*.rst include files. Was too hard to find the corresponding sections otherwise. Hope it means the manual is more likely to be kept up to date.
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-About this document
-===================
-
-**Note**: This document is a draft! Several of Nim's features may need more
-precise wording. This manual is constantly evolving until the 1.0 release and is
-not to be considered as the final proper specification.
-
-This document describes the lexis, the syntax, and the semantics of Nim.
-
-The language constructs are explained using an extended BNF, in which ``(a)*``
-means 0 or more ``a``'s, ``a+`` means 1 or more ``a``'s, and ``(a)?`` means an
-optional *a*. Parentheses may be used to group elements.
-
-``&`` is the lookahead operator; ``&a`` means that an ``a`` is expected but
-not consumed. It will be consumed in the following rule.
-
-The ``|``, ``/`` symbols are used to mark alternatives and have the lowest
-precedence. ``/`` is the ordered choice that requires the parser to try the
-alternatives in the given order. ``/`` is often used to ensure the grammar
-is not ambiguous.
-
-Non-terminals start with a lowercase letter, abstract terminal symbols are in
-UPPERCASE. Verbatim terminal symbols (including keywords) are quoted
-with ``'``. An example::
-
-  ifStmt = 'if' expr ':' stmts ('elif' expr ':' stmts)* ('else' stmts)?
-
-The binary ``^*`` operator is used as a shorthand for 0 or more occurrences
-separated by its second argument; likewise ``^+`` means 1 or more
-occurrences: ``a ^+ b`` is short for ``a (b a)*``
-and ``a ^* b`` is short for ``(a (b a)*)?``. Example::
-
-  arrayConstructor = '[' expr ^* ',' ']'
-
-Other parts of Nim - like scoping rules or runtime semantics are only
-described in the, more easily comprehensible, informal manner for now.
-