This is a long term project in 4th year in computer science at INSA Lyon.
The goal is to create a compiler for a subset of the C programming language.

https://github.com/jeromehue/PLD-COMP

grammar/ contains the Antlr4 grammar for a subset of C (.g4 files)
src/ contains the source code (.cpp and .h files)
tests/ contains everything related to tests

Make sure to create a Makefile.local file containing your local Antlr4 paths, e.g.:

ANTLR4_BINDIR=/usr/bin
ANTLR4_INCDIR=/shares/public/tp/ANTLR4-CPP/antlr4-runtime
ANTLR4_LIBDIR=/shares/public/tp/ANTLR4-CPP/lib
ANTLR4_RUNTIME=libantlr4-runtime.a # or libantlr4-runtime.so

The above example should work with computers of IF rooms 208 and 219.

Compile the project by running make.
Execute our compiler on example.c by running ./bin/ifcc example.c.
The assembly output will go into output.s.

You can use -v for a verbose output.

Run tests with make test.
Detailed test results will go into tests/out/.

As the time of writing, the codeblocks and unary-operators tests fail, because they cover unimplemented features.

You can run a 'graphical' test to visualize the derivation tree produced by antlr.

• Download antlr complete java tool from https://www.antlr.org/download.html, place it under tests/gui.
• Edit launch.sh to specify the CLASSPATH, for instance with antlr-4-9-complete.jar:

  export CLASSPATH=".:./antlr-4.9-complete.jar:$CLASSPATH" 
  alias antlr4="java -jar ./antlr-4.9-complete.jar"

• Run launch.sh

You can also modify the grammar and .c file used. By default, it uses main.c as source code and ifcc.g4 as grammar, but the 'official' C grammar is also available in tests/gui.