A compiler program made for Decaf language. This project is done for Compiler Design course held by MohammadReza Bahrami, in Shahid Beheshti University, fall 2020.
Run Main to compile the program in "src/compiler/program.txt" and produce a MIPS code called out.asm in the root folder of project.
Compiling the program:
java -jar lib/jflex-full-1.8.2.jar src/compiler/Scanner/Scanner.flex
java -jar lib/java-cup-11b.jar src/compiler/Parser/parser.cup
mv parser.java sym.java src/compiler/Parser/
javac -cp .:src/:lib/java-cup-11b.jar src/compiler/Main.java
java -cp .:src/:lib/java-cup-11b.jar compiler.Main
Steps 1 through 4 need to be run once (unless you change parser, scanner, or the main). After that, you only need to run compiler.Main to produce MIPS code.
Running the produced MIPS code:
spim -f out.asm
run run.sh in the root folder. Your tests should be in tests/ folder (as some tests that are there now).
I think the best point to start reading the code is from file parser.cup. You'll see what code is generated in each block of program.
We used JFlex to scan the program and extract its tokens. You can see it in src/compiler/Scanner/Scanner.flex.
We used Java CUP to parse the program and check for syntax errors. Check out file src/compiler/Parser/parser.cup and the Java CUP's documentations for more details and documentations respectively.
We used Java (which was easy to integrate with Java CUP) to connect all parts of the project to each other and generate MIPS code for given programs.