PNG's Not Go

Interesting go-like compiler modified from my college assignment

Compile go-like language to Java bytecode and run the executable in JVM

Note: Please write the homework yourself: Build a Simple Compiler

Features

The compiler has following features (tests/input/):

• arithmetic: in01_arithmetic.png
• precedence: in02_precedence.png
• scope: in03_scope.png
• assignment: in04_assignment.png
• conversion between int and float: in05_conversion.png
• if condition: in06_if.png
• for loop: in07_for.png
• declaration without explicit type: in17_advanced_declaration.png
• simple 1D array: in12_array.png, in15_advanced_array.png, in16_advanced_array2.png
• function define and function call: in10_function.png
• switch case: in11_switch.png
• nested if condition and for loop: in13_nested_ifelse_for.png
• Error handle
  • type: in08_type_error.png
  • variable redeclaration, undefined: in09_variable_error.png
  • function redeclaration: in14_function_redeclare_error.png

Build & Run

$ git clone https://github.com/aben20807/PNG.git
$ cd PNG/
$ git submodule update --init --recursive

$ make
$ ./bin/png_compiler < tests/input/in01_arithmetic.png
$ java -jar 3rdparty/jasmin.jar main.j
Generated: Main.class
$ java Main
5
1
6
1
1
4
3
5.2
1.0
6.5099993
1.4761904
4.1
3.1

Verify

$ make check

Parser
local-judge: v2.7.2
==============================+==================================
                       Sample | Accept
==============================+==================================
              in01_arithmetic | ✔
==============================+==================================
              in02_precedence | ✔
==============================+==================================
                   in03_scope | ✔
==============================+==================================
              in04_assignment | ✔
==============================+==================================
              in05_conversion | ✔
==============================+==================================
                      in06_if | ✔
==============================+==================================
                     in07_for | ✔
==============================+==================================
              in08_type_error | ✔
==============================+==================================
          in09_variable_error | ✔
==============================+==================================
                in10_function | ✔
==============================+==================================
                  in11_switch | ✔
==============================+==================================
                   in12_array | ✔
==============================+==================================
       in13_nested_ifelse_for | ✔
==============================+==================================
in14_function_redeclare_error | ✔
==============================+==================================
          in15_advanced_array | ✔
==============================+==================================
         in16_advanced_array2 | ✔
==============================+==================================
    in17_advanced_declaration | ✔
==============================+==================================
Correct/Total problems: 17/17
Obtained/Total scores:  100/100

Codegen
local-judge: v2.7.2
==============================+==================================
                       Sample | Accept
==============================+==================================
              in01_arithmetic | ✔
==============================+==================================
              in02_precedence | ✔
==============================+==================================
                   in03_scope | ✔
==============================+==================================
              in04_assignment | ✔
==============================+==================================
              in05_conversion | ✔
==============================+==================================
                      in06_if | ✔
==============================+==================================
                     in07_for | ✔
==============================+==================================
              in08_type_error | ✔
==============================+==================================
          in09_variable_error | ✔
==============================+==================================
                in10_function | ✔
==============================+==================================
                  in11_switch | ✔
==============================+==================================
                   in12_array | ✔
==============================+==================================
       in13_nested_ifelse_for | ✔
==============================+==================================
in14_function_redeclare_error | ✔
==============================+==================================
          in15_advanced_array | ✔
==============================+==================================
         in16_advanced_array2 | ✔
==============================+==================================
    in17_advanced_declaration | ✔
==============================+==================================
Correct/Total problems: 17/17
Obtained/Total scores:  100/100

Debug the Java bytecode

• Use jvm-verifier and follow the example

3rdparty/jasmin.jar

Jasmin homepage: https://jasmin.sourceforge.net/

License

MIT