78 lines
2.6 KiB
Org Mode
78 lines
2.6 KiB
Org Mode
#+TITLE: Basic Parsing
|
|
|
|
#+LANGUAGE: en
|
|
|
|
#+ATTR_HTML: :alt in French :class lang-lifted
|
|
[[file:../fr/parsing-upec.org][file:../content/imgs/fr.png]]
|
|
|
|
#+ATTR_HTML: :alt return home :class home
|
|
[[file:../index.org][file:../content/imgs/home.png]]
|
|
|
|
I taught the part of a course on formal languages which was related to
|
|
the [[http://en.wikipedia.org/wiki/Chomsky%2520hierarchy][Chomsky hierarchy]] and [[http://en.wikipedia.org/wiki/Parsing][parsing]].
|
|
|
|
#+ATTR_HTML: :alt image of Creative Commons Attribution Alone licence :class ccby
|
|
[[https://en.wikipedia.org/wiki/Creative_Commons_license][file:../content/imgs/ccby.png]]
|
|
|
|
The materials of my course are distributed under the [[https://en.wikipedia.org/wiki/Creative_Commons_license][Creative Commons
|
|
Attribution Alone licence]].
|
|
|
|
|
|
* Slides
|
|
The slides for this course are available [[file:../content/courses/parsing-upec/parsing.pdf][here]] (in French).
|
|
|
|
* Practical assignment
|
|
The exercises for the practical assignment (in French) can be
|
|
downloaded [[file:../content/courses/parsing-upec/parsing-tp.pdf][here]].
|
|
|
|
* Source code
|
|
In this course I show a simple interpreter for a language of
|
|
variable assignments. The variables can either be strings or integer
|
|
numbers. A program in this language may look as follows:
|
|
|
|
#+BEGIN_SRC
|
|
String var1 = "hello world 1 + 2";
|
|
int var2 = 1 - (2 + 3);
|
|
int var3 = 4 + var2;
|
|
#+END_SRC
|
|
|
|
[[file:../content/courses/parsing-upec/parsing.zip][This archive]] contains the complete source code of the interpreter as
|
|
well as several example programs.
|
|
|
|
To build the project, run the following commands:
|
|
|
|
#+BEGIN_SRC
|
|
jflex arith.flex
|
|
jacc arith.jacc
|
|
javac ArithEval.java
|
|
#+END_SRC
|
|
|
|
The following command runs just the scanner on the first example:
|
|
|
|
#+BEGIN_SRC
|
|
java Yylex examples/example1.duck
|
|
#+END_SRC
|
|
|
|
The following command runs the interpreter on the first example:
|
|
|
|
#+BEGIN_SRC
|
|
java ArithEval examples/example1.duck
|
|
#+END_SRC
|
|
|
|
* Toolchain
|
|
The project relies on [[http://jflex.de/download.html][JFlex]] scanner generator and [[http://web.cecs.pdx.edu/~mpj/jacc/][Jacc]] parser
|
|
generator. Both tools generate Java code. [[file:../content/courses/parsing-upec/parsing-workflow.pdf][Here]] is a short overview
|
|
of a typical workflow.
|
|
|
|
This toolchain was suggested by [[http://lacl.univ-paris12.fr/gava/actuel.htm][Frédéric Gava]] (section Parsing de
|
|
fichiers en Java). This page also contains other slides about
|
|
parsing.
|
|
|
|
|
|
* Local Variables :noexport:
|
|
# Local Variables:
|
|
# org-link-file-path-type: relative
|
|
# eval: (auto-fill-mode)
|
|
# ispell-local-dictionary: "en"
|
|
# End:
|