Description

Input Format
Input is provided through STDIN in either of the following forms. Symbols support should be taken into account.
• Independent assembly statements
• Complete assembly code with multiple statements which perform a certain function.
Remember to provide support for Symbols in addition to handling whitespaces (line comments, in-line comments, newline spaces , indentation etc) NOTE: Input ends with new-line character. Eg:

• Firstly, there are 4 Sample test cases (visible) so that you can RUN and debug your program. These are worth 0 Points in total.
• Then, there are 3 Graded test cases (hidden) on which your program will be evaluated after clicking SUBMIT. These are worth 35 Points in total.
• Finally, there are 3 Bonus test cases (hidden) to check for syntax errors (if any). These will also be evaluated after clicking SUBMIT. These are worth 6 Points in total. We are looking to detect only two kinds of syntax errors (if any) as follows. As soon as your program detects either of the syntax error first, it must immediately exit the program with the corresponding String type error message on STDOUT.
ERROR: end of line expected but semicolon is found ERROR: expression expected
Output Format
1. Output must be 16-bit binary code with reference to HACK assembly reference sheet.
2. For Bonus test cases, output is one of the two error messages of String datatype.
3. Output must be written onto STDOUT
Sample Input 0

• Input is an A-instruction, especially, for in-built symbol R1 which has value 1 on symbol table.
• Output should be of format 0value where value is a 15-bit binary constant.
• Refer to HACK reference Sheet and In-Built Symbol Table for conversion.
Sample Input 1
@ARG
Sample Output 1
0000000000000010
• Input is an A-instruction, especially, for in-built symbol ARG which has value 2 on symbol table.
• Output should be of format 0value where value is a 15-bit binary constant.
• Refer to HACK reference Sheet and In-Built Symbol Table for conversion.
Sample Input 2

• Input is an A-instruction, especially, for variable num which should have value 16 on symbol table.
• Output should be of format 0value where value is a 15-bit binary constant.
• Refer to HACK reference Sheet for conversion.
Sample Input 3
// Handle label declaration and usage
@6
D=A
(END) // label declaration
@END // label usage

• Input is set of A-instructions {@6, @END} , and C-instructions {D=A, 0;JMP}.
• Note (END) is not a part of asm instruction, simply, a declaration
• Output should be of format 0value where value is a 15-bit binary constant or 111accccccdddjjj based on instruction type.
• Refer to HACK reference Sheet for conversion.