pcpp

from pcpp.preprocessor import Preprocessor import io # Example C code as a string c_code = ''' #define MY_MACRO "Hello, World!" #define VERSION 10 #if VERSION > 5 const char* message = MY_MACRO; #else const char* message = "Old version"; #endif int main() { printf("%s\n", message); return 0; } ''' # Create a Preprocessor instance p = Preprocessor() # Define additional macros (optional) p.define("DEBUG") # Prepare input stream (from string or file) input_stream = io.StringIO(c_code) # Parse and preprocess the input p.parse(input_stream) # Get the preprocessed output output = p.stream() # You can iterate through the tokens or get the full string output processed_code = ''.join(str(x) for x in output) print(processed_code) # Expected output for VERSION=10 and DEBUG defined: # const char* message = "Hello, World!"; # # int main() { # printf("%s\n", message); # return 0; # }