marcelogdeandrade / pythoncompiler

Code used on "Writing your own programming language and compiler with Python" post

PythonCompiler

Code used on "Writing your own programming language and compiler with Python" post

pythoncompiler's Issues

Strange answer of print

Hey, i have the same code. I compile with clang but the executable say "-458475770" for this code :
print(4 + 4 - 2);

Only single-line code works

So only single-line code works, so this is not possible:

print(1+1)
print(1+2)

Is there a workaround to this, or is this my error?

How to create a `print` function for different types?

Hi, can I get general guidance on the correct way to implement the print function to be able to print different types:

print(10)
print(7.3)

It's not possible to define a function with the same name for different types, maybe I can somehow cast arguments to strings first and then always pass only strings?

rply.errors.LexingError

specification

python version: 3.10.9
cpu: M1
os: macOS Ventura 13.1
MBA 2020

error

if I run it using the print(1) method it works. but if I try a str print("Hello, World") it gives this error:
rply.errors.LexingError: (None, SourcePosition(idx=0, lineno=1, colno=1))

Full error:

  return self.pg.build()
Traceback (most recent call last):
  File "/Users/klestiselimaj/Projects/lang/main.py", line 21, in <module>
    parser.parse(tokens).eval()
  File "/Users/klestiselimaj/Library/Python/3.9/lib/python/site-packages/rply/parser.py", line 32, in parse
    lookahead = next(tokenizer)
  File "/Users/klestiselimaj/Library/Python/3.9/lib/python/site-packages/rply/lexer.py", line 62, in __next__
    return self.next()
  File "/Users/klestiselimaj/Library/Python/3.9/lib/python/site-packages/rply/lexer.py", line 58, in next
    raise LexingError(None, SourcePosition(
rply.errors.LexingError: (None, SourcePosition(idx=0, lineno=1, colno=1))```

gcc not compiling

After compiling with llc, when output.o file is compiled using gcc the error message flashes

Error running your example on python3

python main.py

PythonCompiler/parser.py:41: ParserGeneratorWarning: 4 shift/reduce conflicts
return self.pg.build()

Did you come across a similar error

parsing error for multiple line file code

greeting sir.
my name is Aditya Gupta. we have been working a project. and wanted to make a python based compiler. so we started following your blog, which by the way is very helpful. but now we are stack at a point where we have to give an file in input.

input file: in.txt
print(1) print(2)

in.txt

output obtained for this input:

Token('PRINT', 'print') Token('OPEN_PAREN', '(') Token('NUMBER', '0') Token('SUM', '+') Token('NUMBER', '9') Token('CLOSE_PAREN', ')') Token('PRINT', 'print') Token('OPEN_PAREN', '(') Token('NUMBER', '9') Token('CLOSE_PAREN', ')') Traceback (most recent call last): File "C:\Users\admin\AppData\Local\Programs\Python\Python37\CompNew\check2.py", line 385, in <module> parser.parse(tokens).eval() File "C:\Users\admin\AppData\Local\Programs\Python\Python37\lib\site-packages\rply\parser.py", line 65, in parse raise ParsingError(None, lookahead.getsourcepos()) rply.errors.ParsingError: (None, None)

error.txt