Compiler

In this project, we will create a compiler from scratch.
This compiler is capable of compiling C language code.
It will be made in Python.

This project is made for the course Compilers at the University of Antwerp.

Table Of contents

1. Assignments.
2. Testing.
3. Files.
4. Sources.
5. Authors.

Assignments

TODO list

• Project 1
• Project 2
• Project 3
• Project 4
• For loops
• While loops
• Break
• Continue
• Project 5
• Function declarations
• Function definitions
• Function calls
• Return
• Return values and type checking / **void type**
• No dead code after **return, break, continue**
• Project 6
• Arrays
• Declarations
• Access
• Printf
• Scanf
• Includes
• LLVM
• Project 1
• Project 2
• Project 3
• Project 4
• Project 5
• Project 6 - **Half implemented**
• MIPS
• Project 1
• Project 2
• Project 3
• Project 4
• Project 5
• Project 6

Testing

Guide on how to test our Compiler, the guide is meant for Pycharm users.

Check if the following path is set right. You could do this by running it on Pycharm, or Terminal, or by script. If you do it in the terminal, match the "parameters" option of pycharm with the parameters in the Terminal.

Jetbrains Pycharm

Terminal

There are two ways to run it via terminal Common parameter settings:

Short command	Long command	Type	Required	Description
-d	--directory	<path>	Yes	Directory of the input files
-t	--type	<str>	Yes	File extension
-f	--files	[str]	Exclusive. Takes priority	Files to parse
-a	--all	NaN	Exclusive. Least priority	Parse all the files in the directory
-i	--index	<int>	Exclusive	Parse the i-th file in the directory
-v	--verbose	NaN	No	Print the AST
-nw	--no-warning	NaN	No	Do not print warnings
-e	--execute-with		No	Execute the mips code generated for the program. Can be "spim", "mars" or "both"
-s	--silent	NaN	No	Do not print the output of the program
-nd	--no-disclaimer	NaN	No	Remove the disclaimers for "spim" and "mars" from the output
-vs	--visualise	NaN	No	Generate a dot format file and compile it to a png
-h	--help	NaN	NaN	For help

Example code with specified input files:

python3 -d ../input_files/ -t .c -f Project3 Project2 ...

Example code with only the input directory and file extension

python3 -d ../input_files/ -t .c -a

Example code with only the input directory and an index

python3 -d ../input_files/ -t .c -i 3

Available tests

All correct programs

cd src || exit &
python3 run.py -d ../input_files/CorrectCode/fully_working/ -t .c -a -e mars -nd

All programs with errors

cd src || exit &
python3 run.py -d ../input_files/SemanticErrors/fully_working/ -t .c -a -e mars -nd

Recursive fibonacci

cd src || exit &
python3 run.py -d ../input_files/CorrectCode/fully_working/ -t .c -f fibonacciRecursive -e mars

Scanf tests

cd src || exit &
python3 run.py -d ../input_files/CorrectCode/fully_working/ -t .c -f Scanf1 Scanf2 -e mars

Printf tests

cd src || exit &
python3 run.py -d ../input_files/CorrectCode/fully_working/ -t .c -f Printf1 Printf2 Printf3 -e mars

Compiling the grammar

1. Go to Grammar folder using cd command
2. Execute the following command:

antlr4 -o ../src/output -listener -visitor -Dlanguage=Python3 Math.g4  

Files

Grammar: ../Grammars/Math.g4
Python scripts: ../src/
C Files: ../input_files/
The output of the scripts: ../MIPS_output/ for asm files and ../Output/graphics for png files

Sources

Antlr4 installation
Dot language reference
LLVM
LLVM ref. page

Mips syscall info
while loops mips
Unaligned address in store error, using the wrong load

Authors

Name	Email	Student number
Jason L.	Jason.Liu@student.uantwerpen.be	20213082
Orfeo T.	Orfeo.Terkuçi@student.uantwerpen.be	20213863