#include <stdio.h>

#include <stdlib.h>

#include "debug.h"

#include "ioutils.h"

#include "filebuffer.h"

#include "tokenbuffer.h"

#include "instructionbuffer.h"

#include "symboltree.h"

#include "scanner/tokenizer.h"

#include "scanner/printtoken.h"

#include "parser/syntax.h"

int main(int argc, char **argv)

{

// Pseudo command-line args; uncomment the following lines and replace the

// main function's signature with "int main(void)" in order to hard-code

// the file paths to input.txt and output.txt.

#if 0

int argc = 5;

char* argv[] = {"./plrun", "-i", "input.txt", "-o", "output.txt"};

#endif

char *finName = NULL;

char *foutName = NULL;

FILE *fin;

FILE *fout;

parseCommandLineArgs(argc, argv, &foutName, &finName,

"A Compiler for PL/0 with an integrated virtual machine.");

fin = modified_fopen(finName, "r", stdin);

fout = modified_fopen(foutName, "w", stdout);

/* SCANNING */

FileBuffer *file_buffer = createFileBuffer(fin);

fclose(fin);

TokenBuffer *token_buffer = tokenize(file_buffer);

freeFileBuffer(file_buffer);

if (_IO_show_lexemes)

{

printTokenList(token_buffer, fout);

fputs("\n\n", fout);

printSymbolicTokenList(token_buffer, fout);

fputs("\n\n", fout);

}

InstructionBuffer *code = createInstructionBuffer();

SymbolTree *tree = createSymbolTree();

program(token_buffer, code, tree);

freeSymbolTree(tree);

freeTokenBuffer(token_buffer);

fputs("No errors, program is syntactically correct.\n\n", fout);

if (_IO_show_assembler)

{

fputs("Instructions: \n", fout);

disassemble(fout, code->buf);

}

run(fout, code->buf);

fclose(fout);

freeInstructionBuffer(code);

return EXIT_SUCCESS;

}