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This
process
is
known
more
formally
as
parsing
(
or to be
more
precise
,
tokenizing
,
lexing
,
and
parsing
).
这个过程更正式的称呼是解析(parsing)(更准确地说,是标记解释(tokenizing)、词法解析(lexing)和语法解析)。
If
humans
wrote
programs
and
data
in
fixed
-
format
text
,
lexing
would
be
very
easy
--
but
we
don't
.
如果人们以固定的格式编写程序和数据,那么词法分析将非常简单——但是我们不那么做。
When
lexing
is
finished
,
a
meaningless
stream
of
data
has
been
transformed
into
a
sequence
of
words
meaningful
to
the
parser
.
词法分析结束后,无意义的数据流被转变为一个有意义的单词序列,提供给解析器。
Additionally
there
is
implemented
a
IDL lexer
,
which
allows
to use the
preprocessor
library
as
the
lexing
component
of
a
IDL
oriented
tool
.
此外还实现了一个IDLlexer,允许将预处理器库用作某个面向IDL的工具的lexing组件。
Regular
expressions
can
encapsulate
a
range
of
lexing
patterns
,
from
simple
fixed
fields
to
fairly
complex
nested
patterns
.
从简单的固定域到相当复杂的嵌套模式,正则表达式可以封装多种词法分析模式。
If
you
want
to
understand
Perl 6
grammars
,
you
'll
have
to
learn
more about
lexing
and
parsing that you
probably
ever
wanted
to
.
如果您想要理解Perl6语法,就不得不去深入学习您可能曾经想过要学的lexing和parsing。
Lexing
,
to
give one
definition
,
is
the
act
of
breaking
up
input
into
meaningful
words
(
also
called
lexing
tokens
or
lexemes
).
从定义来看,词法分析是将输入内容分解为有意义的单词(也叫做词法分析记号(lexingtokens)或词位(lexemes))的动作。
Like P: : RD
,
those
grammars
use
simple
rules
to
do
lexing
,
and
then
use
more
complex
rules
to
parse
the lexed
input
.
类似于P::RD,那些语法使用简单的规则来进行词法分析,然后使用更复杂的规则来解析经过词法分析后的输入内容。
It
's
no
surprise
that
parsing
and
lexing
in Perl 6
is
done
in a
very
similar
way
to the Perl 5
and
P: : RD
combination
described
above
.
Perl6中解析与词法分析的完成方式与上面所描述的Perl5和P::RD的组合非常类似,这是不足为奇的。
A
brief
tutorial
on
parsing
and
lexing
is
in
order
.
应该给出关于解析和词法分析的一个简短指南。
网络释义
词法分析
,并且有
词法分析
(
lexing
)和句法分析(parsing)方面的经验,那么这些会对您掌握本文有很大帮助,此外,本文是为那些对 …
词法解析
...入并将其转换成一个 AST。这个过程更正式的称呼是解析(parsing)(更准确地说,是标记解释(tokenizing)、
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更新时间:2025-02-22 15:08