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Adding comments support #2

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d1295ba
preparing comments integration
jonathan-richer May 14, 2020
1df0a02
Implementation of in-line comments with ';'
jonathan-richer May 14, 2020
599838e
Change CRLF to LF
jonathan-richer May 14, 2020
a75d878
Adding in-line comment support by ';' and ends at LF
jonathan-richer May 14, 2020
dba9449
Add multi-line comment support with ';;;'
jonathan-richer May 14, 2020
5b9ee91
Fix git conflicts
jonathan-richer May 14, 2020
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2 changes: 2 additions & 0 deletions .gitignore
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Original file line number Diff line number Diff line change
@@ -1 +1,3 @@
ab
test.abc
*swp
220 changes: 123 additions & 97 deletions AB.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -25,116 +25,142 @@ int Temp;

int ipow(int base, int exponent)
{
int retval = 1;
int retval = 1;

if ( exponent < 0 )
raise(SIGFPE);
if ( exponent < 0 )
raise(SIGFPE);

while ( exponent )
{
retval *= ( exponent & 1 ) ? base : 1;
exponent /= 2;
base *= base;
}
while ( exponent )
{
retval *= ( exponent & 1 ) ? base : 1;
exponent /= 2;
base *= base;
}

return retval;
return retval;
}

void error(const char* msg)
{
puts(msg);
exit(1);
puts(msg);
exit(1);
}

void checkmem(int addr, const char* errormsg)
{
if(!(addr >= 0 && addr < (int)countof(Memory))) error(errormsg);
if(!(addr >= 0 && addr < (int)countof(Memory))) error(errormsg);
}

int main(int argc, char *argv[])
{
if ( argc != 2 )
{
fprintf(stderr, "Usage: %s FILE\n", argv[0]);
return 1;
}

FILE * FileInd = fopen(argv[1], "r");

if ( FileInd == NULL )
{
fprintf(stderr, "Could not open file '%s'.\n", argv[1]);
return 1;
}

do {
Character = getc(FileInd);
Program.append(1, char(Character));
Num_char ++;

} while ( Character != EOF );

fclose(FileInd);

do {
NewPosition = Position;
if(!(Position >= 0 && Position < Num_char)) error("Invalid position");

if ( Program[Position] == 'a' ) { Register1 += 1 ;}
if ( Program[Position] == 'b' ) { Register1 -= 1 ;}
if ( Program[Position] == 'c' ) { Register1 += 10 ;}
if ( Program[Position] == 'd' ) { Register1 -= 10 ;}
if ( Program[Position] == 'e' ) { Register1 += 100 ;}
if ( Program[Position] == 'f' ) { Register1 -= 100 ;}
if ( Program[Position] == 'g' ) { Register2 += 1 ;}
if ( Program[Position] == 'h' ) { Register2 -= 1 ;}
if ( Program[Position] == 'i' ) { Register2 += 10 ;}
if ( Program[Position] == 'j' ) { Register2 -= 10 ;}
if ( Program[Position] == 'k' ) { Register2 += 100 ;}
if ( Program[Position] == 'l' ) { Register2 -= 100 ;}
if ( Program[Position] == 'm' ) { Register3 = !Register1 ;}
if ( Program[Position] == 'n' ) { Register3 = !Register2 ;}
if ( Program[Position] == 'o' ) { Register3 = Register1 and Register2 ;}
if ( Program[Position] == 'p' ) { Register3 = Register1 or Register2 ;}
if ( Program[Position] == 'q' ) { Register3 = Register1 xor Register2 ;}
if ( Program[Position] == 'r' ) { Register3 = Register1 + Register2 ;}
if ( Program[Position] == 's' ) { Register3 = Register1 - Register2 ;}
if ( Program[Position] == 't' ) { Register3 = Register1 * Register2 ;}
if ( Program[Position] == 'u' ) { if(Register2 == 0) error("u: division by zero"); Register3 = Register1 / Register2 ;}
if ( Program[Position] == 'v' ) { if(Register2 == 0) error("v: division by zero"); Register3 = Register1 % Register2 ;}
if ( Program[Position] == 'w' ) { Register3 = ipow(Register1, Register2) ;}
if ( Program[Position] == 'x' ) { Register1 = 0 ;}
if ( Program[Position] == 'y' ) { Register2 = 0 ;}
if ( Program[Position] == 'z' ) { Register3 = 0 ;}
if ( Program[Position] == 'A' ) { Register2 = Register1 ;}
if ( Program[Position] == 'B' ) { Register1 = Register2 ;}
if ( Program[Position] == 'C' ) { Register3 = Register1 ;}
if ( Program[Position] == 'D' ) { Register3 = Register2 ;}
if ( Program[Position] == 'E' ) { Register1 = Register3 ;}
if ( Program[Position] == 'F' ) { Register2 = Register3 ;}
if ( Program[Position] == 'G' ) { checkmem(Register4[0], "G: invalid memory address"); Register1 = Memory[Register4[0]] ;}
if ( Program[Position] == 'H' ) { checkmem(Register4[0], "H: invalid memory address"); Register2 = Memory[Register4[0]] ;}
if ( Program[Position] == 'I' ) { checkmem(Register4[0], "I: invalid memory address"); Memory[Register4[0]] = Register3 ;}
if ( Program[Position] == 'J' ) { if (( Temp = getchar()) != EOF ) Register1 = Temp ;}
if ( Program[Position] == 'K' ) { if (( Temp = getchar()) != EOF ) Register2 = Temp ;}
if ( Program[Position] == 'L' ) { cout << char(Register3) ;}
if ( Program[Position] == 'M' ) { cout << int(Register3) ;}
if ( Program[Position] == 'N' ) { if ( Register1 == Register2 ) NewPosition = Register4[1];}
if ( Program[Position] == 'O' ) { if ( Register1 != Register2 ) NewPosition = Register4[1];}
if ( Program[Position] == 'P' ) { if ( Register1 >= Register2 ) NewPosition = Register4[1];}
if ( Program[Position] == 'Q' ) { if ( Register1 <= Register2 ) NewPosition = Register4[1];}
if ( Program[Position] == 'R' ) { if ( Register3 == 0 ) NewPosition = Register4[1] - 1;}
if ( Program[Position] == 'S' ) { Register4[Mode] += 1 ;}
if ( Program[Position] == 'T' ) { Register4[Mode] -= 1 ;}
if ( Program[Position] == 'U' ) { Register4[Mode] += 10 ;}
if ( Program[Position] == 'V' ) { Register4[Mode] -= 10 ;}
if ( Program[Position] == 'W' ) { Register4[Mode] += 100 ;}
if ( Program[Position] == 'X' ) { Register4[Mode] -= 100 ;}
if ( Program[Position] == 'Y' ) { Register4[Mode] = 0 ;}
if ( Program[Position] == 'Z' ) { Mode = ( Mode + 1 ) % 2 ;}

Position = (Position == NewPosition) ? Position + 1 : NewPosition;
} while ( Position < Num_char );

return 0;
if ( argc != 2 )
{
fprintf(stderr, "Usage: %s FILE\n", argv[0]);
return 1;
}

FILE * FileInd = fopen(argv[1], "r");

if ( FileInd == NULL )
{
fprintf(stderr, "Could not open file '%s'.\n", argv[1]);
return 1;
}

bool is_comment = false;
bool is_multiline_comment = false;
char lastChar[2] = {0};

do {
Character = getc(FileInd);
if (!is_comment && char(Character) != ';' && char(Character) != '\n' && !is_multiline_comment) {
Program.append(1, char(Character));
Num_char ++;
} else {
switch (char(Character))
{
case ';':
if (lastChar[0] != ';' && !is_multiline_comment) is_comment = !is_comment;
else if (lastChar[1] == ';') {
is_multiline_comment = !is_multiline_comment;
is_comment = is_multiline_comment;
}
break;
case '\n':
if (!is_multiline_comment) is_comment = false;
break;
default:
break;
}
}

lastChar[1] = lastChar[0];
lastChar[0] = char(Character);

} while ( Character != EOF );
cout << Program << endl;

fclose(FileInd);

do {
NewPosition = Position;
if(!(Position >= 0 && Position < Num_char)) error("Invalid position");

if ( Program[Position] == 'a' ) { Register1 += 1 ;}
if ( Program[Position] == 'b' ) { Register1 -= 1 ;}
if ( Program[Position] == 'c' ) { Register1 += 10 ;}
if ( Program[Position] == 'd' ) { Register1 -= 10 ;}
if ( Program[Position] == 'e' ) { Register1 += 100 ;}
if ( Program[Position] == 'f' ) { Register1 -= 100 ;}
if ( Program[Position] == 'g' ) { Register2 += 1 ;}
if ( Program[Position] == 'h' ) { Register2 -= 1 ;}
if ( Program[Position] == 'i' ) { Register2 += 10 ;}
if ( Program[Position] == 'j' ) { Register2 -= 10 ;}
if ( Program[Position] == 'k' ) { Register2 += 100 ;}
if ( Program[Position] == 'l' ) { Register2 -= 100 ;}
if ( Program[Position] == 'm' ) { Register3 = !Register1 ;}
if ( Program[Position] == 'n' ) { Register3 = !Register2 ;}
if ( Program[Position] == 'o' ) { Register3 = Register1 and Register2 ;}
if ( Program[Position] == 'p' ) { Register3 = Register1 or Register2 ;}
if ( Program[Position] == 'q' ) { Register3 = Register1 xor Register2 ;}
if ( Program[Position] == 'r' ) { Register3 = Register1 + Register2 ;}
if ( Program[Position] == 's' ) { Register3 = Register1 - Register2 ;}
if ( Program[Position] == 't' ) { Register3 = Register1 * Register2 ;}
if ( Program[Position] == 'u' ) { if(Register2 == 0) error("u: division by zero"); Register3 = Register1 / Register2 ;}
if ( Program[Position] == 'v' ) { if(Register2 == 0) error("v: division by zero"); Register3 = Register1 % Register2 ;}
if ( Program[Position] == 'w' ) { Register3 = ipow(Register1, Register2) ;}
if ( Program[Position] == 'x' ) { Register1 = 0 ;}
if ( Program[Position] == 'y' ) { Register2 = 0 ;}
if ( Program[Position] == 'z' ) { Register3 = 0 ;}
if ( Program[Position] == 'A' ) { Register2 = Register1 ;}
if ( Program[Position] == 'B' ) { Register1 = Register2 ;}
if ( Program[Position] == 'C' ) { Register3 = Register1 ;}
if ( Program[Position] == 'D' ) { Register3 = Register2 ;}
if ( Program[Position] == 'E' ) { Register1 = Register3 ;}
if ( Program[Position] == 'F' ) { Register2 = Register3 ;}
if ( Program[Position] == 'G' ) { checkmem(Register4[0], "G: invalid memory address"); Register1 = Memory[Register4[0]] ;}
if ( Program[Position] == 'H' ) { checkmem(Register4[0], "H: invalid memory address"); Register2 = Memory[Register4[0]] ;}
if ( Program[Position] == 'I' ) { checkmem(Register4[0], "I: invalid memory address"); Memory[Register4[0]] = Register3 ;}
if ( Program[Position] == 'J' ) { if (( Temp = getchar()) != EOF ) Register1 = Temp ;}
if ( Program[Position] == 'K' ) { if (( Temp = getchar()) != EOF ) Register2 = Temp ;}
if ( Program[Position] == 'L' ) { cout << char(Register3) ;}
if ( Program[Position] == 'M' ) { cout << int(Register3) ;}
if ( Program[Position] == 'N' ) { if ( Register1 == Register2 ) NewPosition = Register4[1];}
if ( Program[Position] == 'O' ) { if ( Register1 != Register2 ) NewPosition = Register4[1];}
if ( Program[Position] == 'P' ) { if ( Register1 >= Register2 ) NewPosition = Register4[1];}
if ( Program[Position] == 'Q' ) { if ( Register1 <= Register2 ) NewPosition = Register4[1];}
if ( Program[Position] == 'R' ) { if ( Register3 == 0 ) NewPosition = Register4[1] - 1;}
if ( Program[Position] == 'S' ) { Register4[Mode] += 1 ;}
if ( Program[Position] == 'T' ) { Register4[Mode] -= 1 ;}
if ( Program[Position] == 'U' ) { Register4[Mode] += 10 ;}
if ( Program[Position] == 'V' ) { Register4[Mode] -= 10 ;}
if ( Program[Position] == 'W' ) { Register4[Mode] += 100 ;}
if ( Program[Position] == 'X' ) { Register4[Mode] -= 100 ;}
if ( Program[Position] == 'Y' ) { Register4[Mode] = 0 ;}
if ( Program[Position] == 'Z' ) { Mode = ( Mode + 1 ) % 2 ;}

Position = (Position == NewPosition) ? Position + 1 : NewPosition;
} while ( Position < Num_char );

return 0;
}