Here is the description of a new assembly language: * 8 registers (R1, R2, R3, R4, R5, R6, R7, R8) that can hold integers. * 1 flag that can hold a boolean value (True or False). * 100 memory addresses (0-99) that can hold integers. * 1 instruction pointer that points to the current instruction being executed. Each instruction is of the form OP ARG1 ARG2 ... where ARGn can be either a register (e.g., R1) or a constant (e.g., 10). Labels are written with a lowercase word followed by colon. The assembly language supports the following instructions: * SET Rx C: Assigns the value C to register Rx. * ADD Rx Ry Rz: Adds the values of Ry and Rz and stores the result in Rx. * (similarly for SUB, MUL, DIV, MOD) * EQ Rx Ry: Sets the flag to True if Rx and Ry are equal, False otherwise. * (similarly for NEQ, LT (Rx < Ry), LTE, GT, GTE) * INC/DEC Rx: Increments/Decrements the value of Rx by one. * JMP L: Jumps to label L unconditionally. * JT/JF (jump if true / jump if false) L: Jumps to label L if the is set or not set. * LOAD Rx M: Loads the value at memory address M into register Rx. * STORE Rx M: Stores the value of register Rx into memory address M. * HCF: Stops the program (with pizzazz) For example here is a program to compute the first 20 square numbers (1, 4, 9, 16, 25, ...): SET R1 0 // Counter for storing squares SET R2 1 // Number to square loop: MUL R3 R2 R2 // R3 = R2 * R2 STORE R3 R1 // Store R3 at address R1 INC R1 // Increment address INC R2 // Increment number SET R3 20 EQ R1 R3 // Check if 20 squares are found JF loop // If not 20 squares found yet, continue finding end: HCF // Stop program Write me a python interpreter `evaluate(str)` that returns the resulting memory state after running the program. For example, `evaluate(program)` should return `[1, 4, 9, 16, 25, ...]` for the above program.
Here is the description of a new assembly language: * 8 registers (R1, R2, R3, R4, R5, R6, R7, R8) that can hold integers. * 1 flag that can hold a boolean value (True or False). * 100 memory addresses (0-99) that can hold integers. * 1 instruction pointer that points to the current instruction being executed. Each instruction is of the form OP ARG1 ARG2 ... where ARGn can be either a register (e.g., R1) or a constant (e.g., 10). Labels are written with a lowercase word followed by colon. The assembly language supports the following instructions: * SET Rx C: Assigns the value C to register Rx. * ADD Rx Ry Rz: Adds the values of Ry and Rz and stores the result in Rx. * (similarly for SUB, MUL, DIV, MOD) * EQ Rx Ry: Sets the flag to True if Rx and Ry are equal, False otherwise. * (similarly for NEQ, LT (Rx < Ry), LTE, GT, GTE) * INC/DEC Rx: Increments/Decrements the value of Rx by one. * JMP L: Jumps to label L unconditionally. * JT/JF (jump if true / jump if false) L: Jumps to label L if the is set or not set. * LOAD Rx M: Loads the value at memory address M into register Rx. * STORE Rx M: Stores the value of register Rx into memory address M. * HCF: Stops the program (with pizzazz) For example here is a program to compute the first 20 square numbers (1, 4, 9, 16, 25, ...): SET R1 0 // Counter for storing squares SET R2 1 // Number to square loop: MUL R3 R2 R2 // R3 = R2 * R2 STORE R3 R1 // Store R3 at address R1 INC R1 // Increment address INC R2 // Increment number SET R3 20 EQ R1 R3 // Check if 20 squares are found JF loop // If not 20 squares found yet, continue finding end: HCF // Stop program Write me a python interpreter `evaluate(str)` that returns the resulting memory state after running the program. For example, `evaluate(program)` should return `[1, 4, 9, 16, 25, ...]` for the above program.
Certainly! Below is a Python interpreter for the given assembly language. The `evaluate` function takes a string representation of the program and returns the resulting memory state after running the program.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 | def evaluate(program): # Initialize registers, memory, flag, and instruction pointer registers = {f'R{i}': 0 for i in range(1, 9)} memory = [0] * 100 flag = False instruction_pointer = 0 # Parse the program into a list of instructions instructions = [] labels = {} for line in program.splitlines(): line = line.split('//')[0].strip() # Remove comments and trim whitespace if not line: continue if ':' in line: label, instr = line.split(':') labels[label.strip()] = len(instructions) if instr.strip(): instructions.append(instr.strip()) else: instructions.append(line) while instruction_pointer < len(instructions): instr = instructions[instruction_pointer] parts = instr.split() op = parts[0] args = parts[1:] def get_value(arg): return registers[arg] if arg in registers else int(arg) if op == 'SET': registers[args[0]] = int(args[1]) elif op == 'ADD': registers[args[0]] = get_value(args[1]) + get_value(args[2]) elif op == 'SUB': registers[args[0]] = get_value(args[1]) - get_value(args[2]) elif op == 'MUL': registers[args[0]] = get_value(args[1]) * get_value(args[2]) elif op == 'DIV': registers[args[0]] = get_value(args[1]) // get_value(args[2]) elif op == 'MOD': registers[args[0]] = get_value(args[1]) % get_value(args[2]) elif op == 'EQ': flag = get_value(args[0]) == get_value(args[1]) elif op == 'NEQ': flag = get_value(args[0]) != get_value(args[1]) elif op == 'LT': flag = get_value(args[0]) < get_value(args[1]) elif op == 'LTE': flag = get_value(args[0]) <= get_value(args[1]) elif op == 'GT': flag = get_value(args[0]) > get_value(args[1]) elif op == 'GTE': flag = get_value(args[0]) >= get_value(args[1]) elif op == 'INC': registers[args[0]] += 1 elif op == 'DEC': registers[args[0]] -= 1 elif op == 'JMP': instruction_pointer = labels[args[0]] continue elif op == 'JT': if flag: instruction_pointer = labels[args[0]] continue elif op == 'JF': if not flag: instruction_pointer = labels[args[0]] continue elif op == 'LOAD': registers[args[0]] = memory[int(args[1])] elif op == 'STORE': memory[int(args[1])] = get_value(args[0]) elif op == 'HCF': break else: raise ValueError(f"Unknown instruction: {op}") instruction_pointer += 1 return memory # Example program to compute the first 20 square numbers program = """ SET R1 0 // Counter for storing squares SET R2 1 // Number to square loop: MUL R3 R2 R2 // R3 = R2 * R2 STORE R3 R1 // Store R3 at address R1 INC R1 // Increment address INC R2 // Increment number SET R3 20 EQ R1 R3 // Check if 20 squares are found JF loop // If not 20 squares found yet, continue finding end: HCF // Stop program """ # Running the program and printing the memory result result = evaluate(program) print(result[:20]) # Print the first 20 memory locations |
I extracted the following code from that output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 | def evaluate(program): # Initialize registers, memory, flag, and instruction pointer registers = {f'R{i}': 0 for i in range(1, 9)} memory = [0] * 100 flag = False instruction_pointer = 0 # Parse the program into a list of instructions instructions = [] labels = {} for line in program.splitlines(): line = line.split('//')[0].strip() # Remove comments and trim whitespace if not line: continue if ':' in line: label, instr = line.split(':') labels[label.strip()] = len(instructions) if instr.strip(): instructions.append(instr.strip()) else: instructions.append(line) while instruction_pointer < len(instructions): instr = instructions[instruction_pointer] parts = instr.split() op = parts[0] args = parts[1:] def get_value(arg): return registers[arg] if arg in registers else int(arg) if op == 'SET': registers[args[0]] = int(args[1]) elif op == 'ADD': registers[args[0]] = get_value(args[1]) + get_value(args[2]) elif op == 'SUB': registers[args[0]] = get_value(args[1]) - get_value(args[2]) elif op == 'MUL': registers[args[0]] = get_value(args[1]) * get_value(args[2]) elif op == 'DIV': registers[args[0]] = get_value(args[1]) // get_value(args[2]) elif op == 'MOD': registers[args[0]] = get_value(args[1]) % get_value(args[2]) elif op == 'EQ': flag = get_value(args[0]) == get_value(args[1]) elif op == 'NEQ': flag = get_value(args[0]) != get_value(args[1]) elif op == 'LT': flag = get_value(args[0]) < get_value(args[1]) elif op == 'LTE': flag = get_value(args[0]) <= get_value(args[1]) elif op == 'GT': flag = get_value(args[0]) > get_value(args[1]) elif op == 'GTE': flag = get_value(args[0]) >= get_value(args[1]) elif op == 'INC': registers[args[0]] += 1 elif op == 'DEC': registers[args[0]] -= 1 elif op == 'JMP': instruction_pointer = labels[args[0]] continue elif op == 'JT': if flag: instruction_pointer = labels[args[0]] continue elif op == 'JF': if not flag: instruction_pointer = labels[args[0]] continue elif op == 'LOAD': registers[args[0]] = memory[int(args[1])] elif op == 'STORE': memory[int(args[1])] = get_value(args[0]) elif op == 'HCF': break else: raise ValueError(f"Unknown instruction: {op}") instruction_pointer += 1 return memory # Example program to compute the first 20 square numbers program = """ SET R1 0 // Counter for storing squares SET R2 1 // Number to square loop: MUL R3 R2 R2 // R3 = R2 * R2 STORE R3 R1 // Store R3 at address R1 INC R1 // Increment address INC R2 // Increment number SET R3 20 EQ R1 R3 // Check if 20 squares are found JF loop // If not 20 squares found yet, continue finding end: HCF // Stop program """ # Running the program and printing the memory result result = evaluate(program) print(result[:20]) # Print the first 20 memory locations |
Running the following program:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 | def evaluate(program): # Initialize registers, memory, flag, and instruction pointer registers = {f'R{i}': 0 for i in range(1, 9)} memory = [0] * 100 flag = False instruction_pointer = 0 # Parse the program into a list of instructions instructions = [] labels = {} for line in program.splitlines(): line = line.split('//')[0].strip() # Remove comments and trim whitespace if not line: continue if ':' in line: label, instr = line.split(':') labels[label.strip()] = len(instructions) if instr.strip(): instructions.append(instr.strip()) else: instructions.append(line) while instruction_pointer < len(instructions): instr = instructions[instruction_pointer] parts = instr.split() op = parts[0] args = parts[1:] def get_value(arg): return registers[arg] if arg in registers else int(arg) if op == 'SET': registers[args[0]] = int(args[1]) elif op == 'ADD': registers[args[0]] = get_value(args[1]) + get_value(args[2]) elif op == 'SUB': registers[args[0]] = get_value(args[1]) - get_value(args[2]) elif op == 'MUL': registers[args[0]] = get_value(args[1]) * get_value(args[2]) elif op == 'DIV': registers[args[0]] = get_value(args[1]) // get_value(args[2]) elif op == 'MOD': registers[args[0]] = get_value(args[1]) % get_value(args[2]) elif op == 'EQ': flag = get_value(args[0]) == get_value(args[1]) elif op == 'NEQ': flag = get_value(args[0]) != get_value(args[1]) elif op == 'LT': flag = get_value(args[0]) < get_value(args[1]) elif op == 'LTE': flag = get_value(args[0]) <= get_value(args[1]) elif op == 'GT': flag = get_value(args[0]) > get_value(args[1]) elif op == 'GTE': flag = get_value(args[0]) >= get_value(args[1]) elif op == 'INC': registers[args[0]] += 1 elif op == 'DEC': registers[args[0]] -= 1 elif op == 'JMP': instruction_pointer = labels[args[0]] continue elif op == 'JT': if flag: instruction_pointer = labels[args[0]] continue elif op == 'JF': if not flag: instruction_pointer = labels[args[0]] continue elif op == 'LOAD': registers[args[0]] = memory[int(args[1])] elif op == 'STORE': memory[int(args[1])] = get_value(args[0]) elif op == 'HCF': break else: raise ValueError(f"Unknown instruction: {op}") instruction_pointer += 1 return memory # Example program to compute the first 20 square numbers program = """ SET R1 0 // Counter for storing squares SET R2 1 // Number to square loop: MUL R3 R2 R2 // R3 = R2 * R2 STORE R3 R1 // Store R3 at address R1 INC R1 // Increment address INC R2 // Increment number SET R3 20 EQ R1 R3 // Check if 20 squares are found JF loop // If not 20 squares found yet, continue finding end: HCF // Stop program """ # Running the program and printing the memory result result = evaluate(program) print(result[:20]) # Print the first 20 memory locations answer = evaluate(""" SET R1 0 SET R2 1 loop: MUL R3 R2 R2 STORE R3 R1 INC R1 INC R2 SET R3 20 EQ R1 R3 JF loop """)[:10] expected = [1, 4, 9, 16, 25, 36, 49, 64, 81, 100] assert answer == expected, f'Wrong answer; got {answer} instead of {expected}' answer = evaluate(""" SET R1 2 // Starting number to check for prime start_find_primes: JMP is_prime // Control will return after executing is_prime with R1 as input and R2 containing the result ready_prime: SET R7 1 EQ R2 R7 // Check if R2 is 1 (prime) JF increment // If not prime, skip storing and increment the number // Store prime number in memory and increment count STORE R1 R8 // Store prime number at address pointed by R8 INC R8 // Increment prime count // Check if 100 primes are found SET R7 100 EQ R8 R7 JF increment // If not 100 primes found yet, continue finding JMP end // If 100 primes found, end program increment: INC R1 // Increment number to check for prime JMP start_find_primes // Check next number is_prime: SET R2 1 // Assume number is prime initially SET R3 2 // Start divisor from 2 start_loop: // Label to start the loop // Check if we have exceeded the square root of R1 MUL R4 R3 R3 // R4 = R3 * R3 GT R4 R1 // Set flag if R4 > R1 JT is_prime_end // If not exceeded, continue; else, end loop MOD R6 R1 R3 // R6 = R1 % R3 SET R7 0 EQ R7 R6 // Check if R6 is 0 JT not_prime // If yes, number is not prime INC R3 // Increment divisor JMP start_loop // Repeat loop not_prime: SET R2 0 // Set result to 0 (not prime) is_prime_end: JMP ready_prime end: """)[:10] expected = [2, 3, 5, 7, 11, 13, 17, 19, 23, 29] assert answer == expected, f'Wrong answer; got {answer} instead of {expected}' print('All tests passed') |
Traceback (most recent call last):
File "/usr/src/app/main.py", line 104, in <module>
result = evaluate(program)
File "/usr/src/app/main.py", line 75, in evaluate
memory[int(args[1])] = get_value(args[0])
ValueError: invalid literal for int() with base 10: 'R1'
Testing if the previous output contains the string All tests passed
: False
Here is the description of a new assembly language: * 8 registers (R1, R2, R3, R4, R5, R6, R7, R8) that can hold integers. * 1 flag that can hold a boolean value (True or False). * 100 memory addresses (0-99) that can hold integers. * 1 instruction pointer that points to the current instruction being executed. Each instruction is of the form OP ARG1 ARG2 ... where ARGn can be either a register (e.g., R1) or a constant (e.g., 10). Labels are written with a lowercase word followed by colon. The assembly language supports the following instructions: * SET Rx C: Assigns the value C to register Rx. * ADD Rx Ry Rz: Adds the values of Ry and Rz and stores the result in Rx. * (similarly for SUB, MUL, DIV, MOD) * EQ Rx Ry: Sets the flag to True if Rx and Ry are equal, False otherwise. * (similarly for NEQ, LT (Rx < Ry), LTE, GT, GTE) * INC/DEC Rx: Increments/Decrements the value of Rx by one. * JMP L: Jumps to label L unconditionally. * JT/JF (jump if true / jump if false) L: Jumps to label L if the is set or not set. * LOAD Rx M: Loads the value at memory address M into register Rx. * STORE Rx M: Stores the value of register Rx into memory address M. * HCF: Stops the program (with pizzazz) For example here is a program to compute the first 20 square numbers (1, 4, 9, 16, 25, ...): SET R1 0 // Counter for storing squares SET R2 1 // Number to square loop: MUL R3 R2 R2 // R3 = R2 * R2 STORE R3 R1 // Store R3 at address R1 INC R1 // Increment address INC R2 // Increment number SET R3 20 EQ R1 R3 // Check if 20 squares are found JF loop // If not 20 squares found yet, continue finding end: HCF // Stop program Write me a python interpreter `evaluate(str)` that returns the resulting memory state after running the program. For example, `evaluate(program)` should return `[1, 4, 9, 16, 25, ...]` for the above program.
Here is the description of a new assembly language: * 8 registers (R1, R2, R3, R4, R5, R6, R7, R8) that can hold integers. * 1 flag that can hold a boolean value (True or False). * 100 memory addresses (0-99) that can hold integers. * 1 instruction pointer that points to the current instruction being executed. Each instruction is of the form OP ARG1 ARG2 ... where ARGn can be either a register (e.g., R1) or a constant (e.g., 10). Labels are written with a lowercase word followed by colon. The assembly language supports the following instructions: * SET Rx C: Assigns the value C to register Rx. * ADD Rx Ry Rz: Adds the values of Ry and Rz and stores the result in Rx. * (similarly for SUB, MUL, DIV, MOD) * EQ Rx Ry: Sets the flag to True if Rx and Ry are equal, False otherwise. * (similarly for NEQ, LT (Rx < Ry), LTE, GT, GTE) * INC/DEC Rx: Increments/Decrements the value of Rx by one. * JMP L: Jumps to label L unconditionally. * JT/JF (jump if true / jump if false) L: Jumps to label L if the is set or not set. * LOAD Rx M: Loads the value at memory address M into register Rx. * STORE Rx M: Stores the value of register Rx into memory address M. * HCF: Stops the program (with pizzazz) For example here is a program to compute the first 20 square numbers (1, 4, 9, 16, 25, ...): SET R1 0 // Counter for storing squares SET R2 1 // Number to square loop: MUL R3 R2 R2 // R3 = R2 * R2 STORE R3 R1 // Store R3 at address R1 INC R1 // Increment address INC R2 // Increment number SET R3 20 EQ R1 R3 // Check if 20 squares are found JF loop // If not 20 squares found yet, continue finding end: HCF // Stop program Write me a python interpreter `evaluate(str)` that returns the resulting memory state after running the program. For example, `evaluate(program)` should return `[1, 4, 9, 16, 25, ...]` for the above program.
To create an interpreter for the given assembly language in Python, we need to simulate the behavior of the assembly instructions and maintain the state of registers, memory, the flag, and the instruction pointer. Here's a step-by-step implementation: 1. **Initialization**: Set up the registers, memory, flag, and instruction pointer. 2. **Parsing**: Parse the input program into instructions. 3. **Execution Loop**: Execute instructions one by one, modifying the state as needed. 4. **Handling Instructions**: Implement each instruction as defined. Here's the complete Python code to achieve this:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 | def evaluate(program): # Initialize registers, memory, flag, and instruction pointer registers = {f"R{i}": 0 for i in range(1, 9)} memory = [0] * 100 flag = False instruction_pointer = 0 # Parse the program into a list of instructions and a label map instructions = [] label_map = {} lines = program.strip().split('\n') for idx, line in enumerate(lines): line = line.split("//")[0].strip() # Remove comments if not line: continue if ':' in line: label, instruction = line.split(':') label = label.strip() instruction = instruction.strip() label_map[label] = len(instructions) if instruction: instructions.append(instruction) else: instructions.append(line) def get_value(arg): if arg.startswith('R'): return registers[arg] else: return int(arg) while instruction_pointer < len(instructions): parts = instructions[instruction_pointer].split() op = parts[0] args = parts[1:] if op == "SET": registers[args[0]] = int(args[1]) elif op == "ADD": registers[args[0]] = get_value(args[1]) + get_value(args[2]) elif op == "SUB": registers[args[0]] = get_value(args[1]) - get_value(args[2]) elif op == "MUL": registers[args[0]] = get_value(args[1]) * get_value(args[2]) elif op == "DIV": registers[args[0]] = get_value(args[1]) // get_value(args[2]) elif op == "MOD": registers[args[0]] = get_value(args[1]) % get_value(args[2]) elif op == "EQ": flag = get_value(args[0]) == get_value(args[1]) elif op == "NEQ": flag = get_value(args[0]) != get_value(args[1]) elif op == "LT": flag = get_value(args[0]) < get_value(args[1]) elif op == "LTE": flag = get_value(args[0]) <= get_value(args[1]) elif op == "GT": flag = get_value(args[0]) > get_value(args[1]) elif op == "GTE": flag = get_value(args[0]) >= get_value(args[1]) elif op == "INC": registers[args[0]] += 1 elif op == "DEC": registers[args[0]] -= 1 elif op == "JMP": instruction_pointer = label_map[args[0]] continue elif op == "JT": if flag: instruction_pointer = label_map[args[0]] continue elif op == "JF": if not flag: instruction_pointer = label_map[args[0]] continue elif op == "LOAD": registers[args[0]] = memory[get_value(args[1])] elif op == "STORE": memory[get_value(args[1])] = get_value(args[0]) elif op == "HCF": break instruction_pointer += 1 return memory # Example usage: program = """ SET R1 0 // Counter for storing squares SET R2 1 // Number to square loop: MUL R3 R2 R2 // R3 = R2 * R2 STORE R3 R1 // Store R3 at address R1 INC R1 // Increment address INC R2 // Increment number SET R3 20 EQ R1 R3 // Check if 20 squares are found JF loop // If not 20 squares found yet, continue finding end: HCF // Stop program """ resulting_memory = evaluate(program) print(resulting_memory[:20]) # Only printing the first 20 elements for brevity |
I extracted the following code from that output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 | def evaluate(program): # Initialize registers, memory, flag, and instruction pointer registers = {f"R{i}": 0 for i in range(1, 9)} memory = [0] * 100 flag = False instruction_pointer = 0 # Parse the program into a list of instructions and a label map instructions = [] label_map = {} lines = program.strip().split('\n') for idx, line in enumerate(lines): line = line.split("//")[0].strip() # Remove comments if not line: continue if ':' in line: label, instruction = line.split(':') label = label.strip() instruction = instruction.strip() label_map[label] = len(instructions) if instruction: instructions.append(instruction) else: instructions.append(line) def get_value(arg): if arg.startswith('R'): return registers[arg] else: return int(arg) while instruction_pointer < len(instructions): parts = instructions[instruction_pointer].split() op = parts[0] args = parts[1:] if op == "SET": registers[args[0]] = int(args[1]) elif op == "ADD": registers[args[0]] = get_value(args[1]) + get_value(args[2]) elif op == "SUB": registers[args[0]] = get_value(args[1]) - get_value(args[2]) elif op == "MUL": registers[args[0]] = get_value(args[1]) * get_value(args[2]) elif op == "DIV": registers[args[0]] = get_value(args[1]) // get_value(args[2]) elif op == "MOD": registers[args[0]] = get_value(args[1]) % get_value(args[2]) elif op == "EQ": flag = get_value(args[0]) == get_value(args[1]) elif op == "NEQ": flag = get_value(args[0]) != get_value(args[1]) elif op == "LT": flag = get_value(args[0]) < get_value(args[1]) elif op == "LTE": flag = get_value(args[0]) <= get_value(args[1]) elif op == "GT": flag = get_value(args[0]) > get_value(args[1]) elif op == "GTE": flag = get_value(args[0]) >= get_value(args[1]) elif op == "INC": registers[args[0]] += 1 elif op == "DEC": registers[args[0]] -= 1 elif op == "JMP": instruction_pointer = label_map[args[0]] continue elif op == "JT": if flag: instruction_pointer = label_map[args[0]] continue elif op == "JF": if not flag: instruction_pointer = label_map[args[0]] continue elif op == "LOAD": registers[args[0]] = memory[get_value(args[1])] elif op == "STORE": memory[get_value(args[1])] = get_value(args[0]) elif op == "HCF": break instruction_pointer += 1 return memory # Example usage: program = """ SET R1 0 // Counter for storing squares SET R2 1 // Number to square loop: MUL R3 R2 R2 // R3 = R2 * R2 STORE R3 R1 // Store R3 at address R1 INC R1 // Increment address INC R2 // Increment number SET R3 20 EQ R1 R3 // Check if 20 squares are found JF loop // If not 20 squares found yet, continue finding end: HCF // Stop program """ resulting_memory = evaluate(program) print(resulting_memory[:20]) # Only printing the first 20 elements for brevity |
Running the following program:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 | def evaluate(program): # Initialize registers, memory, flag, and instruction pointer registers = {f"R{i}": 0 for i in range(1, 9)} memory = [0] * 100 flag = False instruction_pointer = 0 # Parse the program into a list of instructions and a label map instructions = [] label_map = {} lines = program.strip().split('\n') for idx, line in enumerate(lines): line = line.split("//")[0].strip() # Remove comments if not line: continue if ':' in line: label, instruction = line.split(':') label = label.strip() instruction = instruction.strip() label_map[label] = len(instructions) if instruction: instructions.append(instruction) else: instructions.append(line) def get_value(arg): if arg.startswith('R'): return registers[arg] else: return int(arg) while instruction_pointer < len(instructions): parts = instructions[instruction_pointer].split() op = parts[0] args = parts[1:] if op == "SET": registers[args[0]] = int(args[1]) elif op == "ADD": registers[args[0]] = get_value(args[1]) + get_value(args[2]) elif op == "SUB": registers[args[0]] = get_value(args[1]) - get_value(args[2]) elif op == "MUL": registers[args[0]] = get_value(args[1]) * get_value(args[2]) elif op == "DIV": registers[args[0]] = get_value(args[1]) // get_value(args[2]) elif op == "MOD": registers[args[0]] = get_value(args[1]) % get_value(args[2]) elif op == "EQ": flag = get_value(args[0]) == get_value(args[1]) elif op == "NEQ": flag = get_value(args[0]) != get_value(args[1]) elif op == "LT": flag = get_value(args[0]) < get_value(args[1]) elif op == "LTE": flag = get_value(args[0]) <= get_value(args[1]) elif op == "GT": flag = get_value(args[0]) > get_value(args[1]) elif op == "GTE": flag = get_value(args[0]) >= get_value(args[1]) elif op == "INC": registers[args[0]] += 1 elif op == "DEC": registers[args[0]] -= 1 elif op == "JMP": instruction_pointer = label_map[args[0]] continue elif op == "JT": if flag: instruction_pointer = label_map[args[0]] continue elif op == "JF": if not flag: instruction_pointer = label_map[args[0]] continue elif op == "LOAD": registers[args[0]] = memory[get_value(args[1])] elif op == "STORE": memory[get_value(args[1])] = get_value(args[0]) elif op == "HCF": break instruction_pointer += 1 return memory # Example usage: program = """ SET R1 0 // Counter for storing squares SET R2 1 // Number to square loop: MUL R3 R2 R2 // R3 = R2 * R2 STORE R3 R1 // Store R3 at address R1 INC R1 // Increment address INC R2 // Increment number SET R3 20 EQ R1 R3 // Check if 20 squares are found JF loop // If not 20 squares found yet, continue finding end: HCF // Stop program """ resulting_memory = evaluate(program) print(resulting_memory[:20]) # Only printing the first 20 elements for brevity answer = evaluate(""" SET R1 0 SET R2 1 loop: MUL R3 R2 R2 STORE R3 R1 INC R1 INC R2 SET R3 20 EQ R1 R3 JF loop """)[:10] expected = [1, 4, 9, 16, 25, 36, 49, 64, 81, 100] assert answer == expected, f'Wrong answer; got {answer} instead of {expected}' answer = evaluate(""" SET R1 2 // Starting number to check for prime start_find_primes: JMP is_prime // Control will return after executing is_prime with R1 as input and R2 containing the result ready_prime: SET R7 1 EQ R2 R7 // Check if R2 is 1 (prime) JF increment // If not prime, skip storing and increment the number // Store prime number in memory and increment count STORE R1 R8 // Store prime number at address pointed by R8 INC R8 // Increment prime count // Check if 100 primes are found SET R7 100 EQ R8 R7 JF increment // If not 100 primes found yet, continue finding JMP end // If 100 primes found, end program increment: INC R1 // Increment number to check for prime JMP start_find_primes // Check next number is_prime: SET R2 1 // Assume number is prime initially SET R3 2 // Start divisor from 2 start_loop: // Label to start the loop // Check if we have exceeded the square root of R1 MUL R4 R3 R3 // R4 = R3 * R3 GT R4 R1 // Set flag if R4 > R1 JT is_prime_end // If not exceeded, continue; else, end loop MOD R6 R1 R3 // R6 = R1 % R3 SET R7 0 EQ R7 R6 // Check if R6 is 0 JT not_prime // If yes, number is not prime INC R3 // Increment divisor JMP start_loop // Repeat loop not_prime: SET R2 0 // Set result to 0 (not prime) is_prime_end: JMP ready_prime end: """)[:10] expected = [2, 3, 5, 7, 11, 13, 17, 19, 23, 29] assert answer == expected, f'Wrong answer; got {answer} instead of {expected}' print('All tests passed') |
[1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225, 256, 289, 324, 361, 400]
All tests passed
Testing if the previous output contains the string All tests passed
: True
Here is the description of a new assembly language: * 8 registers (R1, R2, R3, R4, R5, R6, R7, R8) that can hold integers. * 1 flag that can hold a boolean value (True or False). * 100 memory addresses (0-99) that can hold integers. * 1 instruction pointer that points to the current instruction being executed. Each instruction is of the form OP ARG1 ARG2 ... where ARGn can be either a register (e.g., R1) or a constant (e.g., 10). Labels are written with a lowercase word followed by colon. The assembly language supports the following instructions: * SET Rx C: Assigns the value C to register Rx. * ADD Rx Ry Rz: Adds the values of Ry and Rz and stores the result in Rx. * (similarly for SUB, MUL, DIV, MOD) * EQ Rx Ry: Sets the flag to True if Rx and Ry are equal, False otherwise. * (similarly for NEQ, LT (Rx < Ry), LTE, GT, GTE) * INC/DEC Rx: Increments/Decrements the value of Rx by one. * JMP L: Jumps to label L unconditionally. * JT/JF (jump if true / jump if false) L: Jumps to label L if the is set or not set. * LOAD Rx M: Loads the value at memory address M into register Rx. * STORE Rx M: Stores the value of register Rx into memory address M. * HCF: Stops the program (with pizzazz) For example here is a program to compute the first 20 square numbers (1, 4, 9, 16, 25, ...): SET R1 0 // Counter for storing squares SET R2 1 // Number to square loop: MUL R3 R2 R2 // R3 = R2 * R2 STORE R3 R1 // Store R3 at address R1 INC R1 // Increment address INC R2 // Increment number SET R3 20 EQ R1 R3 // Check if 20 squares are found JF loop // If not 20 squares found yet, continue finding end: HCF // Stop program Write me a python interpreter `evaluate(str)` that returns the resulting memory state after running the program. For example, `evaluate(program)` should return `[1, 4, 9, 16, 25, ...]` for the above program.
Here is the description of a new assembly language: * 8 registers (R1, R2, R3, R4, R5, R6, R7, R8) that can hold integers. * 1 flag that can hold a boolean value (True or False). * 100 memory addresses (0-99) that can hold integers. * 1 instruction pointer that points to the current instruction being executed. Each instruction is of the form OP ARG1 ARG2 ... where ARGn can be either a register (e.g., R1) or a constant (e.g., 10). Labels are written with a lowercase word followed by colon. The assembly language supports the following instructions: * SET Rx C: Assigns the value C to register Rx. * ADD Rx Ry Rz: Adds the values of Ry and Rz and stores the result in Rx. * (similarly for SUB, MUL, DIV, MOD) * EQ Rx Ry: Sets the flag to True if Rx and Ry are equal, False otherwise. * (similarly for NEQ, LT (Rx < Ry), LTE, GT, GTE) * INC/DEC Rx: Increments/Decrements the value of Rx by one. * JMP L: Jumps to label L unconditionally. * JT/JF (jump if true / jump if false) L: Jumps to label L if the is set or not set. * LOAD Rx M: Loads the value at memory address M into register Rx. * STORE Rx M: Stores the value of register Rx into memory address M. * HCF: Stops the program (with pizzazz) For example here is a program to compute the first 20 square numbers (1, 4, 9, 16, 25, ...): SET R1 0 // Counter for storing squares SET R2 1 // Number to square loop: MUL R3 R2 R2 // R3 = R2 * R2 STORE R3 R1 // Store R3 at address R1 INC R1 // Increment address INC R2 // Increment number SET R3 20 EQ R1 R3 // Check if 20 squares are found JF loop // If not 20 squares found yet, continue finding end: HCF // Stop program Write me a python interpreter `evaluate(str)` that returns the resulting memory state after running the program. For example, `evaluate(program)` should return `[1, 4, 9, 16, 25, ...]` for the above program.
Certainly! Below is a Python interpreter to evaluate the assembly language program and return the resulting memory state.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 | def evaluate(program): # Initialize registers, flag, memory, and instruction pointer registers = {f'R{i}': 0 for i in range(1, 9)} flag = False memory = [0] * 100 instruction_pointer = 0 labels = {} instructions = [] # Preprocess the program to handle labels and instructions for line in program.strip().split('\n'): line = line.split('//')[0].strip() # Remove comments if not line: continue if ':' in line: label, instr = line.split(':') label = label.strip() instr = instr.strip() labels[label] = len(instructions) if instr: instructions.append(instr) else: instructions.append(line) def get_value(arg): if arg.startswith('R'): return registers[arg] else: return int(arg) while instruction_pointer < len(instructions): line = instructions[instruction_pointer].strip() parts = line.split() op = parts[0] args = parts[1:] if op == 'SET': registers[args[0]] = int(args[1]) elif op == 'ADD': registers[args[0]] = get_value(args[1]) + get_value(args[2]) elif op == 'SUB': registers[args[0]] = get_value(args[1]) - get_value(args[2]) elif op == 'MUL': registers[args[0]] = get_value(args[1]) * get_value(args[2]) elif op == 'DIV': registers[args[0]] = get_value(args[1]) // get_value(args[2]) elif op == 'MOD': registers[args[0]] = get_value(args[1]) % get_value(args[2]) elif op == 'EQ': flag = get_value(args[0]) == get_value(args[1]) elif op == 'NEQ': flag = get_value(args[0]) != get_value(args[1]) elif op == 'LT': flag = get_value(args[0]) < get_value(args[1]) elif op == 'LTE': flag = get_value(args[0]) <= get_value(args[1]) elif op == 'GT': flag = get_value(args[0]) > get_value(args[1]) elif op == 'GTE': flag = get_value(args[0]) >= get_value(args[1]) elif op == 'INC': registers[args[0]] += 1 elif op == 'DEC': registers[args[0]] -= 1 elif op == 'JMP': instruction_pointer = labels[args[0]] continue elif op == 'JT': if flag: instruction_pointer = labels[args[0]] continue elif op == 'JF': if not flag: instruction_pointer = labels[args[0]] continue elif op == 'LOAD': registers[args[0]] = memory[int(args[1])] elif op == 'STORE': memory[int(args[1])] = registers[args[0]] elif op == 'HCF': break instruction_pointer += 1 return memory # Test the evaluate function with the provided program program = """ SET R1 0 // Counter for storing squares SET R2 1 // Number to square loop: MUL R3 R2 R2 // R3 = R2 * R2 STORE R3 R1 // Store R3 at address R1 INC R1 // Increment address INC R2 // Increment number SET R3 20 EQ R1 R3 // Check if 20 squares are found JF loop // If not 20 squares found yet, continue finding end: HCF // Stop program """ print(evaluate(program)) |
I extracted the following code from that output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 | def evaluate(program): # Initialize registers, flag, memory, and instruction pointer registers = {f'R{i}': 0 for i in range(1, 9)} flag = False memory = [0] * 100 instruction_pointer = 0 labels = {} instructions = [] # Preprocess the program to handle labels and instructions for line in program.strip().split('\n'): line = line.split('//')[0].strip() # Remove comments if not line: continue if ':' in line: label, instr = line.split(':') label = label.strip() instr = instr.strip() labels[label] = len(instructions) if instr: instructions.append(instr) else: instructions.append(line) def get_value(arg): if arg.startswith('R'): return registers[arg] else: return int(arg) while instruction_pointer < len(instructions): line = instructions[instruction_pointer].strip() parts = line.split() op = parts[0] args = parts[1:] if op == 'SET': registers[args[0]] = int(args[1]) elif op == 'ADD': registers[args[0]] = get_value(args[1]) + get_value(args[2]) elif op == 'SUB': registers[args[0]] = get_value(args[1]) - get_value(args[2]) elif op == 'MUL': registers[args[0]] = get_value(args[1]) * get_value(args[2]) elif op == 'DIV': registers[args[0]] = get_value(args[1]) // get_value(args[2]) elif op == 'MOD': registers[args[0]] = get_value(args[1]) % get_value(args[2]) elif op == 'EQ': flag = get_value(args[0]) == get_value(args[1]) elif op == 'NEQ': flag = get_value(args[0]) != get_value(args[1]) elif op == 'LT': flag = get_value(args[0]) < get_value(args[1]) elif op == 'LTE': flag = get_value(args[0]) <= get_value(args[1]) elif op == 'GT': flag = get_value(args[0]) > get_value(args[1]) elif op == 'GTE': flag = get_value(args[0]) >= get_value(args[1]) elif op == 'INC': registers[args[0]] += 1 elif op == 'DEC': registers[args[0]] -= 1 elif op == 'JMP': instruction_pointer = labels[args[0]] continue elif op == 'JT': if flag: instruction_pointer = labels[args[0]] continue elif op == 'JF': if not flag: instruction_pointer = labels[args[0]] continue elif op == 'LOAD': registers[args[0]] = memory[int(args[1])] elif op == 'STORE': memory[int(args[1])] = registers[args[0]] elif op == 'HCF': break instruction_pointer += 1 return memory # Test the evaluate function with the provided program program = """ SET R1 0 // Counter for storing squares SET R2 1 // Number to square loop: MUL R3 R2 R2 // R3 = R2 * R2 STORE R3 R1 // Store R3 at address R1 INC R1 // Increment address INC R2 // Increment number SET R3 20 EQ R1 R3 // Check if 20 squares are found JF loop // If not 20 squares found yet, continue finding end: HCF // Stop program """ print(evaluate(program)) |
Running the following program:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 | def evaluate(program): # Initialize registers, flag, memory, and instruction pointer registers = {f'R{i}': 0 for i in range(1, 9)} flag = False memory = [0] * 100 instruction_pointer = 0 labels = {} instructions = [] # Preprocess the program to handle labels and instructions for line in program.strip().split('\n'): line = line.split('//')[0].strip() # Remove comments if not line: continue if ':' in line: label, instr = line.split(':') label = label.strip() instr = instr.strip() labels[label] = len(instructions) if instr: instructions.append(instr) else: instructions.append(line) def get_value(arg): if arg.startswith('R'): return registers[arg] else: return int(arg) while instruction_pointer < len(instructions): line = instructions[instruction_pointer].strip() parts = line.split() op = parts[0] args = parts[1:] if op == 'SET': registers[args[0]] = int(args[1]) elif op == 'ADD': registers[args[0]] = get_value(args[1]) + get_value(args[2]) elif op == 'SUB': registers[args[0]] = get_value(args[1]) - get_value(args[2]) elif op == 'MUL': registers[args[0]] = get_value(args[1]) * get_value(args[2]) elif op == 'DIV': registers[args[0]] = get_value(args[1]) // get_value(args[2]) elif op == 'MOD': registers[args[0]] = get_value(args[1]) % get_value(args[2]) elif op == 'EQ': flag = get_value(args[0]) == get_value(args[1]) elif op == 'NEQ': flag = get_value(args[0]) != get_value(args[1]) elif op == 'LT': flag = get_value(args[0]) < get_value(args[1]) elif op == 'LTE': flag = get_value(args[0]) <= get_value(args[1]) elif op == 'GT': flag = get_value(args[0]) > get_value(args[1]) elif op == 'GTE': flag = get_value(args[0]) >= get_value(args[1]) elif op == 'INC': registers[args[0]] += 1 elif op == 'DEC': registers[args[0]] -= 1 elif op == 'JMP': instruction_pointer = labels[args[0]] continue elif op == 'JT': if flag: instruction_pointer = labels[args[0]] continue elif op == 'JF': if not flag: instruction_pointer = labels[args[0]] continue elif op == 'LOAD': registers[args[0]] = memory[int(args[1])] elif op == 'STORE': memory[int(args[1])] = registers[args[0]] elif op == 'HCF': break instruction_pointer += 1 return memory # Test the evaluate function with the provided program program = """ SET R1 0 // Counter for storing squares SET R2 1 // Number to square loop: MUL R3 R2 R2 // R3 = R2 * R2 STORE R3 R1 // Store R3 at address R1 INC R1 // Increment address INC R2 // Increment number SET R3 20 EQ R1 R3 // Check if 20 squares are found JF loop // If not 20 squares found yet, continue finding end: HCF // Stop program """ print(evaluate(program)) answer = evaluate(""" SET R1 0 SET R2 1 loop: MUL R3 R2 R2 STORE R3 R1 INC R1 INC R2 SET R3 20 EQ R1 R3 JF loop """)[:10] expected = [1, 4, 9, 16, 25, 36, 49, 64, 81, 100] assert answer == expected, f'Wrong answer; got {answer} instead of {expected}' answer = evaluate(""" SET R1 2 // Starting number to check for prime start_find_primes: JMP is_prime // Control will return after executing is_prime with R1 as input and R2 containing the result ready_prime: SET R7 1 EQ R2 R7 // Check if R2 is 1 (prime) JF increment // If not prime, skip storing and increment the number // Store prime number in memory and increment count STORE R1 R8 // Store prime number at address pointed by R8 INC R8 // Increment prime count // Check if 100 primes are found SET R7 100 EQ R8 R7 JF increment // If not 100 primes found yet, continue finding JMP end // If 100 primes found, end program increment: INC R1 // Increment number to check for prime JMP start_find_primes // Check next number is_prime: SET R2 1 // Assume number is prime initially SET R3 2 // Start divisor from 2 start_loop: // Label to start the loop // Check if we have exceeded the square root of R1 MUL R4 R3 R3 // R4 = R3 * R3 GT R4 R1 // Set flag if R4 > R1 JT is_prime_end // If not exceeded, continue; else, end loop MOD R6 R1 R3 // R6 = R1 % R3 SET R7 0 EQ R7 R6 // Check if R6 is 0 JT not_prime // If yes, number is not prime INC R3 // Increment divisor JMP start_loop // Repeat loop not_prime: SET R2 0 // Set result to 0 (not prime) is_prime_end: JMP ready_prime end: """)[:10] expected = [2, 3, 5, 7, 11, 13, 17, 19, 23, 29] assert answer == expected, f'Wrong answer; got {answer} instead of {expected}' print('All tests passed') |
Traceback (most recent call last):
File "/usr/src/app/main.py", line 106, in <module>
print(evaluate(program))
File "/usr/src/app/main.py", line 80, in evaluate
memory[int(args[1])] = registers[args[0]]
ValueError: invalid literal for int() with base 10: 'R1'
Testing if the previous output contains the string All tests passed
: False
Here is the description of a new assembly language: * 8 registers (R1, R2, R3, R4, R5, R6, R7, R8) that can hold integers. * 1 flag that can hold a boolean value (True or False). * 100 memory addresses (0-99) that can hold integers. * 1 instruction pointer that points to the current instruction being executed. Each instruction is of the form OP ARG1 ARG2 ... where ARGn can be either a register (e.g., R1) or a constant (e.g., 10). Labels are written with a lowercase word followed by colon. The assembly language supports the following instructions: * SET Rx C: Assigns the value C to register Rx. * ADD Rx Ry Rz: Adds the values of Ry and Rz and stores the result in Rx. * (similarly for SUB, MUL, DIV, MOD) * EQ Rx Ry: Sets the flag to True if Rx and Ry are equal, False otherwise. * (similarly for NEQ, LT (Rx < Ry), LTE, GT, GTE) * INC/DEC Rx: Increments/Decrements the value of Rx by one. * JMP L: Jumps to label L unconditionally. * JT/JF (jump if true / jump if false) L: Jumps to label L if the is set or not set. * LOAD Rx M: Loads the value at memory address M into register Rx. * STORE Rx M: Stores the value of register Rx into memory address M. * HCF: Stops the program (with pizzazz) For example here is a program to compute the first 20 square numbers (1, 4, 9, 16, 25, ...): SET R1 0 // Counter for storing squares SET R2 1 // Number to square loop: MUL R3 R2 R2 // R3 = R2 * R2 STORE R3 R1 // Store R3 at address R1 INC R1 // Increment address INC R2 // Increment number SET R3 20 EQ R1 R3 // Check if 20 squares are found JF loop // If not 20 squares found yet, continue finding end: HCF // Stop program Write me a python interpreter `evaluate(str)` that returns the resulting memory state after running the program. For example, `evaluate(program)` should return `[1, 4, 9, 16, 25, ...]` for the above program.
Here is the description of a new assembly language: * 8 registers (R1, R2, R3, R4, R5, R6, R7, R8) that can hold integers. * 1 flag that can hold a boolean value (True or False). * 100 memory addresses (0-99) that can hold integers. * 1 instruction pointer that points to the current instruction being executed. Each instruction is of the form OP ARG1 ARG2 ... where ARGn can be either a register (e.g., R1) or a constant (e.g., 10). Labels are written with a lowercase word followed by colon. The assembly language supports the following instructions: * SET Rx C: Assigns the value C to register Rx. * ADD Rx Ry Rz: Adds the values of Ry and Rz and stores the result in Rx. * (similarly for SUB, MUL, DIV, MOD) * EQ Rx Ry: Sets the flag to True if Rx and Ry are equal, False otherwise. * (similarly for NEQ, LT (Rx < Ry), LTE, GT, GTE) * INC/DEC Rx: Increments/Decrements the value of Rx by one. * JMP L: Jumps to label L unconditionally. * JT/JF (jump if true / jump if false) L: Jumps to label L if the is set or not set. * LOAD Rx M: Loads the value at memory address M into register Rx. * STORE Rx M: Stores the value of register Rx into memory address M. * HCF: Stops the program (with pizzazz) For example here is a program to compute the first 20 square numbers (1, 4, 9, 16, 25, ...): SET R1 0 // Counter for storing squares SET R2 1 // Number to square loop: MUL R3 R2 R2 // R3 = R2 * R2 STORE R3 R1 // Store R3 at address R1 INC R1 // Increment address INC R2 // Increment number SET R3 20 EQ R1 R3 // Check if 20 squares are found JF loop // If not 20 squares found yet, continue finding end: HCF // Stop program Write me a python interpreter `evaluate(str)` that returns the resulting memory state after running the program. For example, `evaluate(program)` should return `[1, 4, 9, 16, 25, ...]` for the above program.
Here is a Python interpreter to evaluate the given assembly language and return the resulting memory state:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 | def evaluate(program): # Initialize registers, memory, instruction pointer, and flag registers = {f'R{i}': 0 for i in range(1, 9)} memory = [0] * 100 flag = False instruction_pointer = 0 # Parse the program into a list of instructions and labels instructions = [] labels = {} for line in program.splitlines(): line = line.strip() if line == '' or line.startswith('//'): continue if line.endswith(':'): labels[line[:-1]] = len(instructions) else: instructions.append(line.split()) # Execute the instructions while instruction_pointer < len(instructions): instr = instructions[instruction_pointer] op = instr[0] # Helper to get register or constant value def get_value(arg): if arg.startswith('R'): return registers[arg] return int(arg) if op == 'SET': registers[instr[1]] = int(instr[2]) elif op == 'ADD': registers[instr[1]] = get_value(instr[2]) + get_value(instr[3]) elif op == 'SUB': registers[instr[1]] = get_value(instr[2]) - get_value(instr[3]) elif op == 'MUL': registers[instr[1]] = get_value(instr[2]) * get_value(instr[3]) elif op == 'DIV': registers[instr[1]] = get_value(instr[2]) // get_value(instr[3]) elif op == 'MOD': registers[instr[1]] = get_value(instr[2]) % get_value(instr[3]) elif op == 'EQ': flag = get_value(instr[1]) == get_value(instr[2]) elif op == 'NEQ': flag = get_value(instr[1]) != get_value(instr[2]) elif op == 'LT': flag = get_value(instr[1]) < get_value(instr[2]) elif op == 'LTE': flag = get_value(instr[1]) <= get_value(instr[2]) elif op == 'GT': flag = get_value(instr[1]) > get_value(instr[2]) elif op == 'GTE': flag = get_value(instr[1]) >= get_value(instr[2]) elif op == 'INC': registers[instr[1]] += 1 elif op == 'DEC': registers[instr[1]] -= 1 elif op == 'JMP': instruction_pointer = labels[instr[1]] continue elif op == 'JT': if flag: instruction_pointer = labels[instr[1]] continue elif op == 'JF': if not flag: instruction_pointer = labels[instr[1]] continue elif op == 'LOAD': registers[instr[1]] = memory[int(instr[2])] elif op == 'STORE': memory[int(instr[2])] = get_value(instr[1]) elif op == 'HCF': break instruction_pointer += 1 return memory # Example program to compute the first 20 square numbers program = """ SET R1 0 // Counter for storing squares SET R2 1 // Number to square loop: MUL R3 R2 R2 // R3 = R2 * R2 STORE R3 R1 // Store R3 at address R1 INC R1 // Increment address INC R2 // Increment number SET R3 20 EQ R1 R3 // Check if 20 squares are found JF loop // If not 20 squares found yet, continue finding end: HCF // Stop program """ # Running the program and printing the resulting memory state result = evaluate(program) print(result[:20]) # Print first 20 memory slots to verify the result |
I extracted the following code from that output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 | def evaluate(program): # Initialize registers, memory, instruction pointer, and flag registers = {f'R{i}': 0 for i in range(1, 9)} memory = [0] * 100 flag = False instruction_pointer = 0 # Parse the program into a list of instructions and labels instructions = [] labels = {} for line in program.splitlines(): line = line.strip() if line == '' or line.startswith('//'): continue if line.endswith(':'): labels[line[:-1]] = len(instructions) else: instructions.append(line.split()) # Execute the instructions while instruction_pointer < len(instructions): instr = instructions[instruction_pointer] op = instr[0] # Helper to get register or constant value def get_value(arg): if arg.startswith('R'): return registers[arg] return int(arg) if op == 'SET': registers[instr[1]] = int(instr[2]) elif op == 'ADD': registers[instr[1]] = get_value(instr[2]) + get_value(instr[3]) elif op == 'SUB': registers[instr[1]] = get_value(instr[2]) - get_value(instr[3]) elif op == 'MUL': registers[instr[1]] = get_value(instr[2]) * get_value(instr[3]) elif op == 'DIV': registers[instr[1]] = get_value(instr[2]) // get_value(instr[3]) elif op == 'MOD': registers[instr[1]] = get_value(instr[2]) % get_value(instr[3]) elif op == 'EQ': flag = get_value(instr[1]) == get_value(instr[2]) elif op == 'NEQ': flag = get_value(instr[1]) != get_value(instr[2]) elif op == 'LT': flag = get_value(instr[1]) < get_value(instr[2]) elif op == 'LTE': flag = get_value(instr[1]) <= get_value(instr[2]) elif op == 'GT': flag = get_value(instr[1]) > get_value(instr[2]) elif op == 'GTE': flag = get_value(instr[1]) >= get_value(instr[2]) elif op == 'INC': registers[instr[1]] += 1 elif op == 'DEC': registers[instr[1]] -= 1 elif op == 'JMP': instruction_pointer = labels[instr[1]] continue elif op == 'JT': if flag: instruction_pointer = labels[instr[1]] continue elif op == 'JF': if not flag: instruction_pointer = labels[instr[1]] continue elif op == 'LOAD': registers[instr[1]] = memory[int(instr[2])] elif op == 'STORE': memory[int(instr[2])] = get_value(instr[1]) elif op == 'HCF': break instruction_pointer += 1 return memory # Example program to compute the first 20 square numbers program = """ SET R1 0 // Counter for storing squares SET R2 1 // Number to square loop: MUL R3 R2 R2 // R3 = R2 * R2 STORE R3 R1 // Store R3 at address R1 INC R1 // Increment address INC R2 // Increment number SET R3 20 EQ R1 R3 // Check if 20 squares are found JF loop // If not 20 squares found yet, continue finding end: HCF // Stop program """ # Running the program and printing the resulting memory state result = evaluate(program) print(result[:20]) # Print first 20 memory slots to verify the result |
Running the following program:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 | def evaluate(program): # Initialize registers, memory, instruction pointer, and flag registers = {f'R{i}': 0 for i in range(1, 9)} memory = [0] * 100 flag = False instruction_pointer = 0 # Parse the program into a list of instructions and labels instructions = [] labels = {} for line in program.splitlines(): line = line.strip() if line == '' or line.startswith('//'): continue if line.endswith(':'): labels[line[:-1]] = len(instructions) else: instructions.append(line.split()) # Execute the instructions while instruction_pointer < len(instructions): instr = instructions[instruction_pointer] op = instr[0] # Helper to get register or constant value def get_value(arg): if arg.startswith('R'): return registers[arg] return int(arg) if op == 'SET': registers[instr[1]] = int(instr[2]) elif op == 'ADD': registers[instr[1]] = get_value(instr[2]) + get_value(instr[3]) elif op == 'SUB': registers[instr[1]] = get_value(instr[2]) - get_value(instr[3]) elif op == 'MUL': registers[instr[1]] = get_value(instr[2]) * get_value(instr[3]) elif op == 'DIV': registers[instr[1]] = get_value(instr[2]) // get_value(instr[3]) elif op == 'MOD': registers[instr[1]] = get_value(instr[2]) % get_value(instr[3]) elif op == 'EQ': flag = get_value(instr[1]) == get_value(instr[2]) elif op == 'NEQ': flag = get_value(instr[1]) != get_value(instr[2]) elif op == 'LT': flag = get_value(instr[1]) < get_value(instr[2]) elif op == 'LTE': flag = get_value(instr[1]) <= get_value(instr[2]) elif op == 'GT': flag = get_value(instr[1]) > get_value(instr[2]) elif op == 'GTE': flag = get_value(instr[1]) >= get_value(instr[2]) elif op == 'INC': registers[instr[1]] += 1 elif op == 'DEC': registers[instr[1]] -= 1 elif op == 'JMP': instruction_pointer = labels[instr[1]] continue elif op == 'JT': if flag: instruction_pointer = labels[instr[1]] continue elif op == 'JF': if not flag: instruction_pointer = labels[instr[1]] continue elif op == 'LOAD': registers[instr[1]] = memory[int(instr[2])] elif op == 'STORE': memory[int(instr[2])] = get_value(instr[1]) elif op == 'HCF': break instruction_pointer += 1 return memory # Example program to compute the first 20 square numbers program = """ SET R1 0 // Counter for storing squares SET R2 1 // Number to square loop: MUL R3 R2 R2 // R3 = R2 * R2 STORE R3 R1 // Store R3 at address R1 INC R1 // Increment address INC R2 // Increment number SET R3 20 EQ R1 R3 // Check if 20 squares are found JF loop // If not 20 squares found yet, continue finding end: HCF // Stop program """ # Running the program and printing the resulting memory state result = evaluate(program) print(result[:20]) # Print first 20 memory slots to verify the result answer = evaluate(""" SET R1 0 SET R2 1 loop: MUL R3 R2 R2 STORE R3 R1 INC R1 INC R2 SET R3 20 EQ R1 R3 JF loop """)[:10] expected = [1, 4, 9, 16, 25, 36, 49, 64, 81, 100] assert answer == expected, f'Wrong answer; got {answer} instead of {expected}' answer = evaluate(""" SET R1 2 // Starting number to check for prime start_find_primes: JMP is_prime // Control will return after executing is_prime with R1 as input and R2 containing the result ready_prime: SET R7 1 EQ R2 R7 // Check if R2 is 1 (prime) JF increment // If not prime, skip storing and increment the number // Store prime number in memory and increment count STORE R1 R8 // Store prime number at address pointed by R8 INC R8 // Increment prime count // Check if 100 primes are found SET R7 100 EQ R8 R7 JF increment // If not 100 primes found yet, continue finding JMP end // If 100 primes found, end program increment: INC R1 // Increment number to check for prime JMP start_find_primes // Check next number is_prime: SET R2 1 // Assume number is prime initially SET R3 2 // Start divisor from 2 start_loop: // Label to start the loop // Check if we have exceeded the square root of R1 MUL R4 R3 R3 // R4 = R3 * R3 GT R4 R1 // Set flag if R4 > R1 JT is_prime_end // If not exceeded, continue; else, end loop MOD R6 R1 R3 // R6 = R1 % R3 SET R7 0 EQ R7 R6 // Check if R6 is 0 JT not_prime // If yes, number is not prime INC R3 // Increment divisor JMP start_loop // Repeat loop not_prime: SET R2 0 // Set result to 0 (not prime) is_prime_end: JMP ready_prime end: """)[:10] expected = [2, 3, 5, 7, 11, 13, 17, 19, 23, 29] assert answer == expected, f'Wrong answer; got {answer} instead of {expected}' print('All tests passed') |
Traceback (most recent call last):
File "/usr/src/app/main.py", line 102, in <module>
result = evaluate(program)
File "/usr/src/app/main.py", line 75, in evaluate
memory[int(instr[2])] = get_value(instr[1])
ValueError: invalid literal for int() with base 10: 'R1'
Testing if the previous output contains the string All tests passed
: False
Here is the description of a new assembly language: * 8 registers (R1, R2, R3, R4, R5, R6, R7, R8) that can hold integers. * 1 flag that can hold a boolean value (True or False). * 100 memory addresses (0-99) that can hold integers. * 1 instruction pointer that points to the current instruction being executed. Each instruction is of the form OP ARG1 ARG2 ... where ARGn can be either a register (e.g., R1) or a constant (e.g., 10). Labels are written with a lowercase word followed by colon. The assembly language supports the following instructions: * SET Rx C: Assigns the value C to register Rx. * ADD Rx Ry Rz: Adds the values of Ry and Rz and stores the result in Rx. * (similarly for SUB, MUL, DIV, MOD) * EQ Rx Ry: Sets the flag to True if Rx and Ry are equal, False otherwise. * (similarly for NEQ, LT (Rx < Ry), LTE, GT, GTE) * INC/DEC Rx: Increments/Decrements the value of Rx by one. * JMP L: Jumps to label L unconditionally. * JT/JF (jump if true / jump if false) L: Jumps to label L if the is set or not set. * LOAD Rx M: Loads the value at memory address M into register Rx. * STORE Rx M: Stores the value of register Rx into memory address M. * HCF: Stops the program (with pizzazz) For example here is a program to compute the first 20 square numbers (1, 4, 9, 16, 25, ...): SET R1 0 // Counter for storing squares SET R2 1 // Number to square loop: MUL R3 R2 R2 // R3 = R2 * R2 STORE R3 R1 // Store R3 at address R1 INC R1 // Increment address INC R2 // Increment number SET R3 20 EQ R1 R3 // Check if 20 squares are found JF loop // If not 20 squares found yet, continue finding end: HCF // Stop program Write me a python interpreter `evaluate(str)` that returns the resulting memory state after running the program. For example, `evaluate(program)` should return `[1, 4, 9, 16, 25, ...]` for the above program.
Here is the description of a new assembly language: * 8 registers (R1, R2, R3, R4, R5, R6, R7, R8) that can hold integers. * 1 flag that can hold a boolean value (True or False). * 100 memory addresses (0-99) that can hold integers. * 1 instruction pointer that points to the current instruction being executed. Each instruction is of the form OP ARG1 ARG2 ... where ARGn can be either a register (e.g., R1) or a constant (e.g., 10). Labels are written with a lowercase word followed by colon. The assembly language supports the following instructions: * SET Rx C: Assigns the value C to register Rx. * ADD Rx Ry Rz: Adds the values of Ry and Rz and stores the result in Rx. * (similarly for SUB, MUL, DIV, MOD) * EQ Rx Ry: Sets the flag to True if Rx and Ry are equal, False otherwise. * (similarly for NEQ, LT (Rx < Ry), LTE, GT, GTE) * INC/DEC Rx: Increments/Decrements the value of Rx by one. * JMP L: Jumps to label L unconditionally. * JT/JF (jump if true / jump if false) L: Jumps to label L if the is set or not set. * LOAD Rx M: Loads the value at memory address M into register Rx. * STORE Rx M: Stores the value of register Rx into memory address M. * HCF: Stops the program (with pizzazz) For example here is a program to compute the first 20 square numbers (1, 4, 9, 16, 25, ...): SET R1 0 // Counter for storing squares SET R2 1 // Number to square loop: MUL R3 R2 R2 // R3 = R2 * R2 STORE R3 R1 // Store R3 at address R1 INC R1 // Increment address INC R2 // Increment number SET R3 20 EQ R1 R3 // Check if 20 squares are found JF loop // If not 20 squares found yet, continue finding end: HCF // Stop program Write me a python interpreter `evaluate(str)` that returns the resulting memory state after running the program. For example, `evaluate(program)` should return `[1, 4, 9, 16, 25, ...]` for the above program.
Certainly! Below is a Python interpreter for the described assembly language. This interpreter will take a program as a string input and return the resulting memory state after running the program.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 | def evaluate(program): # Initialize registers, flag, memory, and instruction pointer registers = {f"R{i}": 0 for i in range(1, 9)} flag = False memory = [0] * 100 instruction_pointer = 0 labels = {} instructions = [] # Parse the program into instructions and labels for line in program.split('\n'): line = line.strip() if line == '' or line.startswith('//'): continue if ':' in line: label, instr = line.split(':') labels[label.strip()] = len(instructions) if instr.strip(): instructions.append(instr.strip()) else: instructions.append(line) def get_value(arg): if arg.startswith('R'): return registers[arg] return int(arg) # Execute the instructions while instruction_pointer < len(instructions): parts = instructions[instruction_pointer].split() op = parts[0] args = parts[1:] if op == "SET": registers[args[0]] = int(args[1]) elif op == "ADD": registers[args[0]] = get_value(args[1]) + get_value(args[2]) elif op == "SUB": registers[args[0]] = get_value(args[1]) - get_value(args[2]) elif op == "MUL": registers[args[0]] = get_value(args[1]) * get_value(args[2]) elif op == "DIV": registers[args[0]] = get_value(args[1]) // get_value(args[2]) elif op == "MOD": registers[args[0]] = get_value(args[1]) % get_value(args[2]) elif op == "EQ": flag = get_value(args[0]) == get_value(args[1]) elif op == "NEQ": flag = get_value(args[0]) != get_value(args[1]) elif op == "LT": flag = get_value(args[0]) < get_value(args[1]) elif op == "LTE": flag = get_value(args[0]) <= get_value(args[1]) elif op == "GT": flag = get_value(args[0]) > get_value(args[1]) elif op == "GTE": flag = get_value(args[0]) >= get_value(args[1]) elif op == "INC": registers[args[0]] += 1 elif op == "DEC": registers[args[0]] -= 1 elif op == "JMP": instruction_pointer = labels[args[0]] continue elif op == "JT": if flag: instruction_pointer = labels[args[0]] continue elif op == "JF": if not flag: instruction_pointer = labels[args[0]] continue elif op == "LOAD": registers[args[0]] = memory[int(args[1])] elif op == "STORE": memory[int(args[1])] = registers[args[0]] elif op == "HCF": break else: raise ValueError(f"Unknown instruction {op}") instruction_pointer += 1 return memory # Example program to compute the first 20 square numbers program = """ SET R1 0 // Counter for storing squares SET R2 1 // Number to square loop: MUL R3 R2 R2 // R3 = R2 * R2 STORE R3 R1 // Store R3 at address R1 INC R1 // Increment address INC R2 // Increment number SET R3 20 EQ R1 R3 // Check if 20 squares are found JF loop // If not 20 squares found yet, continue finding end: HCF // Stop program """ result = evaluate(program) print(result[:20]) # Print the first 20 memory addresses to see the squares |
I extracted the following code from that output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 | def evaluate(program): # Initialize registers, flag, memory, and instruction pointer registers = {f"R{i}": 0 for i in range(1, 9)} flag = False memory = [0] * 100 instruction_pointer = 0 labels = {} instructions = [] # Parse the program into instructions and labels for line in program.split('\n'): line = line.strip() if line == '' or line.startswith('//'): continue if ':' in line: label, instr = line.split(':') labels[label.strip()] = len(instructions) if instr.strip(): instructions.append(instr.strip()) else: instructions.append(line) def get_value(arg): if arg.startswith('R'): return registers[arg] return int(arg) # Execute the instructions while instruction_pointer < len(instructions): parts = instructions[instruction_pointer].split() op = parts[0] args = parts[1:] if op == "SET": registers[args[0]] = int(args[1]) elif op == "ADD": registers[args[0]] = get_value(args[1]) + get_value(args[2]) elif op == "SUB": registers[args[0]] = get_value(args[1]) - get_value(args[2]) elif op == "MUL": registers[args[0]] = get_value(args[1]) * get_value(args[2]) elif op == "DIV": registers[args[0]] = get_value(args[1]) // get_value(args[2]) elif op == "MOD": registers[args[0]] = get_value(args[1]) % get_value(args[2]) elif op == "EQ": flag = get_value(args[0]) == get_value(args[1]) elif op == "NEQ": flag = get_value(args[0]) != get_value(args[1]) elif op == "LT": flag = get_value(args[0]) < get_value(args[1]) elif op == "LTE": flag = get_value(args[0]) <= get_value(args[1]) elif op == "GT": flag = get_value(args[0]) > get_value(args[1]) elif op == "GTE": flag = get_value(args[0]) >= get_value(args[1]) elif op == "INC": registers[args[0]] += 1 elif op == "DEC": registers[args[0]] -= 1 elif op == "JMP": instruction_pointer = labels[args[0]] continue elif op == "JT": if flag: instruction_pointer = labels[args[0]] continue elif op == "JF": if not flag: instruction_pointer = labels[args[0]] continue elif op == "LOAD": registers[args[0]] = memory[int(args[1])] elif op == "STORE": memory[int(args[1])] = registers[args[0]] elif op == "HCF": break else: raise ValueError(f"Unknown instruction {op}") instruction_pointer += 1 return memory # Example program to compute the first 20 square numbers program = """ SET R1 0 // Counter for storing squares SET R2 1 // Number to square loop: MUL R3 R2 R2 // R3 = R2 * R2 STORE R3 R1 // Store R3 at address R1 INC R1 // Increment address INC R2 // Increment number SET R3 20 EQ R1 R3 // Check if 20 squares are found JF loop // If not 20 squares found yet, continue finding end: HCF // Stop program """ result = evaluate(program) print(result[:20]) # Print the first 20 memory addresses to see the squares |
Running the following program:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 | def evaluate(program): # Initialize registers, flag, memory, and instruction pointer registers = {f"R{i}": 0 for i in range(1, 9)} flag = False memory = [0] * 100 instruction_pointer = 0 labels = {} instructions = [] # Parse the program into instructions and labels for line in program.split('\n'): line = line.strip() if line == '' or line.startswith('//'): continue if ':' in line: label, instr = line.split(':') labels[label.strip()] = len(instructions) if instr.strip(): instructions.append(instr.strip()) else: instructions.append(line) def get_value(arg): if arg.startswith('R'): return registers[arg] return int(arg) # Execute the instructions while instruction_pointer < len(instructions): parts = instructions[instruction_pointer].split() op = parts[0] args = parts[1:] if op == "SET": registers[args[0]] = int(args[1]) elif op == "ADD": registers[args[0]] = get_value(args[1]) + get_value(args[2]) elif op == "SUB": registers[args[0]] = get_value(args[1]) - get_value(args[2]) elif op == "MUL": registers[args[0]] = get_value(args[1]) * get_value(args[2]) elif op == "DIV": registers[args[0]] = get_value(args[1]) // get_value(args[2]) elif op == "MOD": registers[args[0]] = get_value(args[1]) % get_value(args[2]) elif op == "EQ": flag = get_value(args[0]) == get_value(args[1]) elif op == "NEQ": flag = get_value(args[0]) != get_value(args[1]) elif op == "LT": flag = get_value(args[0]) < get_value(args[1]) elif op == "LTE": flag = get_value(args[0]) <= get_value(args[1]) elif op == "GT": flag = get_value(args[0]) > get_value(args[1]) elif op == "GTE": flag = get_value(args[0]) >= get_value(args[1]) elif op == "INC": registers[args[0]] += 1 elif op == "DEC": registers[args[0]] -= 1 elif op == "JMP": instruction_pointer = labels[args[0]] continue elif op == "JT": if flag: instruction_pointer = labels[args[0]] continue elif op == "JF": if not flag: instruction_pointer = labels[args[0]] continue elif op == "LOAD": registers[args[0]] = memory[int(args[1])] elif op == "STORE": memory[int(args[1])] = registers[args[0]] elif op == "HCF": break else: raise ValueError(f"Unknown instruction {op}") instruction_pointer += 1 return memory # Example program to compute the first 20 square numbers program = """ SET R1 0 // Counter for storing squares SET R2 1 // Number to square loop: MUL R3 R2 R2 // R3 = R2 * R2 STORE R3 R1 // Store R3 at address R1 INC R1 // Increment address INC R2 // Increment number SET R3 20 EQ R1 R3 // Check if 20 squares are found JF loop // If not 20 squares found yet, continue finding end: HCF // Stop program """ result = evaluate(program) print(result[:20]) # Print the first 20 memory addresses to see the squares answer = evaluate(""" SET R1 0 SET R2 1 loop: MUL R3 R2 R2 STORE R3 R1 INC R1 INC R2 SET R3 20 EQ R1 R3 JF loop """)[:10] expected = [1, 4, 9, 16, 25, 36, 49, 64, 81, 100] assert answer == expected, f'Wrong answer; got {answer} instead of {expected}' answer = evaluate(""" SET R1 2 // Starting number to check for prime start_find_primes: JMP is_prime // Control will return after executing is_prime with R1 as input and R2 containing the result ready_prime: SET R7 1 EQ R2 R7 // Check if R2 is 1 (prime) JF increment // If not prime, skip storing and increment the number // Store prime number in memory and increment count STORE R1 R8 // Store prime number at address pointed by R8 INC R8 // Increment prime count // Check if 100 primes are found SET R7 100 EQ R8 R7 JF increment // If not 100 primes found yet, continue finding JMP end // If 100 primes found, end program increment: INC R1 // Increment number to check for prime JMP start_find_primes // Check next number is_prime: SET R2 1 // Assume number is prime initially SET R3 2 // Start divisor from 2 start_loop: // Label to start the loop // Check if we have exceeded the square root of R1 MUL R4 R3 R3 // R4 = R3 * R3 GT R4 R1 // Set flag if R4 > R1 JT is_prime_end // If not exceeded, continue; else, end loop MOD R6 R1 R3 // R6 = R1 % R3 SET R7 0 EQ R7 R6 // Check if R6 is 0 JT not_prime // If yes, number is not prime INC R3 // Increment divisor JMP start_loop // Repeat loop not_prime: SET R2 0 // Set result to 0 (not prime) is_prime_end: JMP ready_prime end: """)[:10] expected = [2, 3, 5, 7, 11, 13, 17, 19, 23, 29] assert answer == expected, f'Wrong answer; got {answer} instead of {expected}' print('All tests passed') |
Traceback (most recent call last):
File "/usr/src/app/main.py", line 105, in <module>
result = evaluate(program)
File "/usr/src/app/main.py", line 77, in evaluate
memory[int(args[1])] = registers[args[0]]
ValueError: invalid literal for int() with base 10: 'R1'
Testing if the previous output contains the string All tests passed
: False