[lab3] add print support for functions, blocks and instructions

src/pysrc/sysy/middle_ir.py

@@ -2,14 +2,26 @@ class MiddleFunction:
     def __init__(self, name: str):
         self.name = name
         self.basic_blocks = []  # List[MiddleBasicBlock]
-
+    def __repr__(self):
+        return f"Function({self.name}):\n" + "\n".join(str(block) for block in self.basic_blocks)
+    def __str__(self):
+        return self.__repr__()
+    
 class MiddleBasicBlock:
     def __init__(self, name: str):
         self.name = name
         self.instructions = []  # List[MiddleInstruction]
+    def __repr__(self):
+        return f"BasicBlock({self.name}):\n" + "\n".join(str(instr) for instr in self.instructions)
+    def __str__(self):
+        return self.__repr__()
 
 class MiddleInstruction:
     def __init__(self, opcode: str, operands: list, dest=None):
         self.opcode = opcode       # e.g., 'add'
         self.operands = operands   # e.g., ['5', '7']
         self.dest = dest           # e.g., '%0'
+    def __repr__(self):
+        return f"{self.dest} = {self.opcode} " + ", ".join(self.operands) if self.dest else f"{self.opcode} " + ", ".join(self.operands)
+    def __str__(self):
+        return self.__repr__()

src/pysrc/sysy/utils/ir_parser.py

@@ -18,8 +18,7 @@ def parse_llvm_ir(ir_text: str) -> MiddleFunction:
             for instr in block.instructions:
                 opcode = instr.opcode
                 operands = [str(op) for op in instr.operands]
-                # 调试输出
-                print(f"Instruction: {instr}, Opcode: {opcode}, Operands: {operands}")
+
                 # 如果是有返回值的指令（如 add），第一个操作数是 dest
                 dest = None
                 if hasattr(instr, 'name') and instr.name:

src/pysrc/sysyc.py

@@ -3,8 +3,9 @@ from sysy.utils.ir_parser import parse_llvm_ir
 from sysy.backend.x86_emitter import X86Emitter
 
 def main():
-    if len(sys.argv) != 3:
-        print("Usage: sysyc.py <input.ll> <output.s>")
+    if len(sys.argv) != 2:
+        # print("Usage: sysyc.py <input.ll> <output.s>")
+        print("Usage: sysyc.py <input.ll>")
         sys.exit(1)
     
     # 读取 LLVM IR
@@ -13,11 +14,12 @@ def main():
     
     # 解析并生成汇编
     func = parse_llvm_ir(ir_text)
+    print(func)
     asm = X86Emitter().emit_function(func)
     
     # 写入文件
-    with open(sys.argv[2], 'w') as f:
-        f.write(asm)
-
+    # with open(sys.argv[2], 'w') as f:
+        # f.write(asm)
+    print(asm)
 if __name__ == "__main__":
     main()