Future/bison
1
0
Fork 0
mirror of https://git.savannah.gnu.org/git/bison.git synced 2026-03-09 12:23:04 +00:00
Code Issues Packages Projects Releases Wiki Activity

examples: calc++: a Makefile and a README

Browse Source 
* examples/calc++/Makefile, examples/calc++/README: New.
* examples/calc++/local.mk: Ship and install them.
* doc/bison.texi: Formatting changes.
This commit is contained in:
Akim Demaille
2018-08-25 08:04:37 +02:00
parent 280c40a350
commit de64159e7f
6 changed files with 97 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
doc/bison.texi
View File

@@ -11066,14 +11066,13 @@ use characters such as @code{':'}, they must be declared with @code{%token}.
@node A Complete C++ Example
@subsection A Complete C++ Example
This section demonstrates the use of a C++ parser with a simple but
complete example. This example should be available on your system,
ready to compile, in the directory @dfn{.../bison/examples/calc++}. It
focuses on the use of Bison, therefore the design of the various C++
classes is very naive: no accessors, no encapsulation of members etc.
We will use a Lex scanner, and more precisely, a Flex scanner, to
demonstrate the various interactions. A hand-written scanner is
actually easier to interface with.
This section demonstrates the use of a C++ parser with a simple but complete
example. This example should be available on your system, ready to compile,
in the directory @dfn{.../share/doc/bison/examples/calc++}. It focuses on
the use of Bison, therefore the design of the various C++ classes is very
naive: no accessors, no encapsulation of members etc. We will use a Lex
scanner, and more precisely, a Flex scanner, to demonstrate the various
interactions. A hand-written scanner is actually easier to interface with.
@menu
* Calc++ --- C++ Calculator:: The specifications
@@ -11086,11 +11085,10 @@ actually easier to interface with.
@node Calc++ --- C++ Calculator
@subsubsection Calc++ --- C++ Calculator
Of course the grammar is dedicated to arithmetics, a single
expression, possibly preceded by variable assignments. An
environment containing possibly predefined variables such as
@code{one} and @code{two}, is exchanged with the parser. An example
of valid input follows.
Of course the grammar is dedicated to arithmetics, a single expression,
possibly preceded by variable assignments. An environment containing
possibly predefined variables such as @code{one} and @code{two}, is
exchanged with the parser. An example of valid input follows.
@example
three := 3