Tiger Compiler Labs in C++

Tiger Compiler Labs in C++

Overview

We rewrote the Tiger Compiler labs using C++ programming language. This is because C++ has some features like inheritance and polymorphism, which we think is more suitable for these labs and less error-prone.

We provide you all the codes of all labs in one time. In each lab, you only need to code in some of the directories.

The Tiger Compiler Labs are not perfect, but we have tried our best and spent a lot of time on it. If you find any bugs or have a better design, please inform us.

Difference Between C Labs and C++ Labs

This new labs use flexc++ and bisonc++ instead of flex and bison because flexc++ and bisonc++ is more flexc++ and bisonc++ are able to generate pure C++ codes instead of C codes wrapped in C++ files.
The new labs use namespace for modularization and use inheritance and polymorphism to replace unions used in the old labs.
This new labs use CMake instead of Makefile to compile and build the target.

Getting Newly Released Labs

The first thing you have to do is to clone the current lab repository by issuing the following commands on the command line:
```
git clone https://ipads.se.sjtu.edu.cn:1312/lab/tiger-compiler-2019-fall.git
```
Once a lab is released, pull in the changes from your simpledb directory:
```
git pull origin https://ipads.se.sjtu.edu.cn:1312/lab/tiger-compiler-2019-fall.git master
```
And then check the content of VERSION file and make sure that the lab environment in your local computer is new enough.

Notice: You may need to do some code merging work.

Installing Dependencies

flexc++ and bisonc++ will be needed in lab2 and later. Although these libraries are not needed in lab1, you have to install them before you start lab1.

Notice:: Now we only support the following version of flexc++ and bisonc++:

flexc++ - V2.06.02
bisonc++ - V6.01.00

Ubuntu18.04

sudo apt install git tar cmake g++ gcc gdb flexc++ bisonc++

Notice: This series of labs now only support Ubuntu18.04. For those who use Ubuntu16.04, you still need to use Docker to build and run your labs.

MacOS, Windows Professional, Ubuntu16.04, and other Linux Distributions

We provide you a Docker image which has already installed all the dependencies. You can compile your codes directly in this Docker image.

Install Docker.

Build the docker image using the Dockerfile that we provide.

cd tiger-compiler-2019-fall
docker build -t se302/tigerlabs_env .

Run a docker container and mount the lab directory on it. You should replace /path/to/tiger-compiler-2019-fall to the path where you clone the lab repository on your computer.
```
docker run -it --privileged -v /path/to/tiger-compiler-2019-fall:/home/stu/tiger-compiler-2019-fall se302/tigerlabs_env:latest /bin/bash
cd tiger-compiler-2019-fall
```

Notice: Please do not use Docker Toolbox. For those who Windows Home, you still use virtual machine instead and install a Ubuntu18.04 image.

Compiling

There are six makeable targets in total, including test_slp, test_lex, test_parse, test_semant, test_translate, and tiger-compiler.

mkdir build
cd build
cmake ..
make test_xxx  # e.g. `make test_slp`

Debugging

# in build direcotry
cmake -DCMAKE_BUILD_TYPE=Debug ..
make test_xxx # e.g. `make test_slp`
gdb test_xxx # e.g. `gdb test_slp`

Grading Your Labs

# cd to the lab root directory, i.e. tiger-compiler-2019-fall
./gradelabx.sh # e.g. `./gradelab1.sh`

Submitting Your Labs

First commit your codes.

git add somefiles
git commit -m "A message!"

Pack your codes, rename the packed file, and upload it!
```
./handin.sh
```

FAQ

Some students who use Windows OS may get the following output when they run the grading scripts in their docker containers. This is because Git For Windows automatically converts the LF (Unix newline)to CRLF(Windows newline) for all the files that you clone or commit and Linux bash won't execute the scripts that use CRLF newlines.
```
bash: ./gradelab1.sh: /bin/bash^M: bad interpreter: No such file or directory
```
Solution: Add some configs to the .gitconfig file in your user directory as below. For example, if your user name is foo, your user directory should be C:\Users\foo. For more information, you can refer to this website.
```
[core]
    autocrlf = false
    safecrlf = true
```

How can I get the root privilege in the docker container?

Solution: Modify docker file and rebuild the docker image.

FROM ubuntu:18.04

# Use aliyun registry
RUN  sed -i s@/archive.ubuntu.com/@/mirrors.aliyun.com/@g /etc/apt/sources.list
RUN  apt-get clean

RUN apt-get update && apt-get install -y git cmake g++ gcc vim tar gdb flexc++ bisonc++

WORKDIR /root

And run the command:

docker run -it --privileged -v /path/to/tiger-compiler-2019-fall:/root/tiger-compiler-2019-fall se302/tigerlabs_env:latest /bin/bash
cd tiger-compiler-2019-fall

isalb729/tiger-compiler