446 lines
24 KiB
Python
446 lines
24 KiB
Python
from __future__ import annotations
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from typing import TYPE_CHECKING, Any
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if TYPE_CHECKING:
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from lib.core.translator import Translator
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from lib.core.LlvmCodeGenerator import LlvmCodeGenerator
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import ast
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import re
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import llvmlite.ir as ir
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from lib.core.Handles.HandlesBase import BaseHandle
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from lib.constants.config import mode as _config_mode
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from lib.includes.t import CTypeRegistry as _CR
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class ExprHandle(BaseHandle):
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# list 元素类型 → (字节大小, LLVM 元素类型) 映射表
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# 用于 _HandleListLlvm 中 alloc_size / byte_offset / elem_ptr 类型统一查表，
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# 消除原代码三处重复的 if-elif 链。
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_ELEM_TYPE_INFO: dict[str, tuple[int, ir.Type]] = {
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'i8': (1, ir.IntType(8)),
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'i16': (2, ir.IntType(16)),
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'i32': (4, ir.IntType(32)),
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'float': (4, ir.FloatType()),
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'double': (8, ir.DoubleType()),
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}
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def __init__(self, translator: "Translator") -> None:
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super().__init__(translator)
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def GetOpSymbol(self, Op: ast.cmpop | ast.operator | ast.unaryoperator) -> str | None:
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return self.Trans.ExprUtils.GetOpSymbol(Op)
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def GetUnaryOpSymbol(self, Op: ast.unaryoperator) -> str | None:
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return self.Trans.ExprUtils.GetUnaryOpSymbol(Op)
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def GetComparatorSymbol(self, Op: ast.cmpop) -> str | None:
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return self.Trans.ExprUtils.GetComparatorSymbol(Op)
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def _get_var_class(self, node: ast.AST, Gen: LlvmCodeGenerator) -> str | None:
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return self.Trans.ExprUtils._get_var_class(node, Gen)
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def _try_operator_overLoad(self, ClassName: str, op_name: str, obj_val: ir.Value, Gen: LlvmCodeGenerator, other_val: ir.Value | None = None) -> ir.Value | None:
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return self.Trans.ExprUtils._try_operator_overLoad(ClassName, op_name, obj_val, Gen, other_val)
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def _get_llvm_member_offset(self, field_name: str, ClassName: str, Gen: LlvmCodeGenerator) -> int | None:
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return self.Trans.ExprAttrHandle._get_llvm_member_offset(field_name, ClassName, Gen)
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def HandleExprLlvm(self, Node: ast.AST, VarType: ir.Type | str | None = None) -> ir.Value | None:
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Gen: LlvmCodeGenerator = self.Trans.LlvmGen
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if not Gen or not Gen.builder:
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return None
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if isinstance(Node, ast.Constant):
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return self._HandleConstantLlvm(Node, VarType)
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elif isinstance(Node, ast.Name):
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return self._HandleNameLlvm(Node, VarType)
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elif isinstance(Node, ast.BinOp):
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return self.Trans.ExprOpsHandle._HandleBinOpLlvm(Node, VarType)
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elif isinstance(Node, ast.BoolOp):
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return self.Trans.ExprOpsHandle._HandleBoolOpLlvm(Node)
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elif isinstance(Node, ast.UnaryOp):
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return self.Trans.ExprOpsHandle._HandleUnaryOpLlvm(Node)
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elif isinstance(Node, ast.Call):
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return self.Trans.ExprCallHandle._HandleCallLlvm(Node)
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elif isinstance(Node, ast.Compare):
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return self.Trans.ExprOpsHandle._HandleCompareLlvm(Node)
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elif isinstance(Node, ast.Attribute):
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return self.Trans.ExprAttrHandle._HandleAttributeLlvm(Node)
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elif isinstance(Node, ast.Subscript):
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return self.Trans.ExprAttrHandle._HandleSubscriptLlvm(Node)
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elif isinstance(Node, ast.IfExp):
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return self.Trans.ExprLambdaHandle._HandleIfExpLlvm(Node)
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elif isinstance(Node, ast.NamedExpr):
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return self.Trans.ExprLambdaHandle._HandleNamedExprLlvm(Node)
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elif isinstance(Node, ast.JoinedStr):
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return self.Trans.ExprFormatHandle._HandleJoinedStrLlvm(Node)
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elif isinstance(Node, ast.Lambda):
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return self.Trans.ExprLambdaHandle._HandleLambdaLlvm(Node)
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elif isinstance(Node, ast.List):
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return self._HandleListLlvm(Node, VarType)
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return ir.Constant(ir.IntType(32), 0)
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def _HandleListLlvm(self, Node: ast.List, VarType: ir.Type | str | None = None) -> ir.Value | None:
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Gen: LlvmCodeGenerator = self.Trans.LlvmGen
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elements: list[ast.expr] = Node.elts
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if not elements:
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return ir.Constant(ir.IntType(8).as_pointer(), None)
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array_len: int = len(elements)
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elem_type: str = 'i8'
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if VarType and isinstance(VarType, str) and 'list[' in VarType:
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match: re.Match | None = re.search(r'list\[([^,\]]+)(?:,\s*(\d+))?\]', VarType)
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if match:
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type_str: str = match.group(1).strip()
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if match.group(2):
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array_len = int(match.group(2))
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if 'CChar' in type_str or 'char' in type_str.lower():
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elem_type = 'i8'
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elif 'CFloat' in type_str or type_str.lower() == 'float':
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elem_type = 'float'
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elif 'CDouble' in type_str or type_str.lower() == 'double':
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elem_type = 'double'
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elif 'CInt' in type_str or ('int' in type_str.lower() and 'unsigned' not in type_str.lower()):
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elem_type = 'i32'
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elif 'CUnsignedInt' in type_str or 'unsigned' in type_str.lower():
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elem_type = 'i32'
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elif 'CUnsignedChar' in type_str or 'unsigned char' in type_str.lower():
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elem_type = 'i8'
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elif 'CShort' in type_str or 'short' in type_str.lower():
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elem_type = 'i16'
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elif 'CUnsignedShort' in type_str:
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elem_type = 'i16'
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elif elements and all(isinstance(e, (ast.Constant,)) and isinstance(getattr(e, 'value', None), float) for e in elements):
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elem_type = 'float'
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alloc_size: int = array_len
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elem_info: tuple[int, ir.Type] = self._ELEM_TYPE_INFO.get(elem_type, (1, ir.IntType(8)))
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elem_size: int = elem_info[0]
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elem_llvm_type: ir.Type = elem_info[1]
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alloc_size *= elem_size
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malloc_fn: Any = None
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malloc_arg_type: ir.IntType = ir.IntType(64)
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for fn in Gen.module.global_values:
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if fn.name == 'malloc':
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malloc_fn = fn
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func_ftype: Any = getattr(fn, 'ftype', None)
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if func_ftype and getattr(func_ftype, 'args', None):
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if func_ftype.args:
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malloc_arg_type = fn.ftype.args[0]
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break
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if not malloc_fn:
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try:
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malloc_fn_type: ir.FunctionType = ir.FunctionType(ir.PointerType(ir.IntType(8)), [ir.IntType(64)])
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malloc_fn = ir.Function(Gen.module, malloc_fn_type, name='malloc')
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Gen.functions['malloc'] = malloc_fn
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except Exception: # 回退：malloc 函数创建失败时返回 null
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return ir.Constant(ir.IntType(8).as_pointer(), None)
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alloc_ptr: Any = Gen.builder.call(malloc_fn, [ir.Constant(malloc_arg_type, alloc_size)])
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cast_ptr: Any = Gen.builder.bitcast(alloc_ptr, ir.PointerType(ir.IntType(8)))
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for i, elem in enumerate(elements):
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if i >= array_len:
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break
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elem_val: Any = self.HandleExprLlvm(elem, VarType=elem_type)
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if elem_val is None:
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continue
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byte_offset: int = i
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if elem_type == 'i32':
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byte_offset = i * 4
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elif elem_type == 'i16':
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byte_offset = i * 2
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elif elem_type == 'float':
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byte_offset = i * 4
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elif elem_type == 'double':
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byte_offset = i * 8
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ptr_as_int: Any = Gen.builder.ptrtoint(cast_ptr, ir.IntType(64))
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new_ptr_val: Any = Gen.builder.add(ptr_as_int, ir.Constant(ir.IntType(64), byte_offset))
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if elem_type == 'i32':
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elem_ptr: Any = Gen.builder.inttoptr(new_ptr_val, ir.PointerType(ir.IntType(32)))
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elif elem_type == 'i16':
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elem_ptr = Gen.builder.inttoptr(new_ptr_val, ir.PointerType(ir.IntType(16)))
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elif elem_type == 'float':
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elem_ptr = Gen.builder.inttoptr(new_ptr_val, ir.PointerType(ir.FloatType()))
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elif elem_type == 'double':
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elem_ptr = Gen.builder.inttoptr(new_ptr_val, ir.PointerType(ir.DoubleType()))
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else:
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elem_ptr = Gen.builder.inttoptr(new_ptr_val, ir.PointerType(ir.IntType(8)))
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if elem_type == 'i8':
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if isinstance(elem_val.type, ir.IntType) and elem_val.type.width > 8:
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elem_val = Gen.builder.trunc(elem_val, ir.IntType(8), name=f"trunc_elem_{i}")
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elif isinstance(elem_val.type, ir.PointerType):
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elem_val = Gen.builder.ptrtoint(elem_val, ir.IntType(64), name=f"ptrtoint_elem_{i}")
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elem_val = Gen.builder.trunc(elem_val, ir.IntType(8), name=f"trunc_elem_{i}")
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elif elem_type == 'i32':
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if isinstance(elem_val.type, ir.IntType):
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if elem_val.type.width < 32:
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elem_val = Gen.builder.zext(elem_val, ir.IntType(32), name=f"zext_elem_{i}")
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elif elem_val.type.width > 32:
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elem_val = Gen.builder.trunc(elem_val, ir.IntType(32), name=f"trunc_elem_{i}")
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elif isinstance(elem_val.type, ir.PointerType):
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elem_val = Gen.builder.ptrtoint(elem_val, ir.IntType(32), name=f"ptrtoint_elem_{i}")
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elif elem_type == 'i16':
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if isinstance(elem_val.type, ir.IntType):
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if elem_val.type.width < 16:
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elem_val = Gen.builder.zext(elem_val, ir.IntType(16), name=f"zext_elem_{i}")
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elif elem_val.type.width > 16:
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elem_val = Gen.builder.trunc(elem_val, ir.IntType(16), name=f"trunc_elem_{i}")
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elif elem_type == 'float':
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if isinstance(elem_val.type, ir.DoubleType):
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elem_val = Gen.builder.fptrunc(elem_val, ir.FloatType(), name=f"fptrunc_elem_{i}")
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elif isinstance(elem_val.type, ir.IntType):
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elem_val = Gen.builder.sitofp(elem_val, ir.FloatType(), name=f"sitofp_elem_{i}")
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elif elem_type == 'double':
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if isinstance(elem_val.type, ir.FloatType):
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elem_val = Gen.builder.fpext(elem_val, ir.DoubleType(), name=f"fpext_elem_{i}")
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elif isinstance(elem_val.type, ir.IntType):
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elem_val = Gen.builder.sitofp(elem_val, ir.DoubleType(), name=f"sitofp_elem_{i}")
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Gen.builder.store(elem_val, elem_ptr)
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if elem_type in ('float', 'double'):
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return Gen.builder.bitcast(alloc_ptr, ir.PointerType(elem_llvm_type), name=f"list_{elem_type}_ptr")
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return cast_ptr
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def _HandleConstantLlvm(self, Node: ast.Constant, VarType: ir.Type | str | None = None) -> ir.Value:
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Gen: LlvmCodeGenerator = self.Trans.LlvmGen
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Value: Any = Node.value
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if Value is None:
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if VarType is not None and isinstance(VarType, ir.PointerType):
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return ir.Constant(VarType, None)
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return ir.Constant(ir.IntType(8).as_pointer(), None)
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elif isinstance(Value, bool):
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return ir.Constant(ir.IntType(32), 1 if Value else 0)
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elif isinstance(Value, int):
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if VarType is not None:
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if isinstance(VarType, ir.IntType):
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return ir.Constant(VarType, Value & ((1 << VarType.width) - 1))
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if isinstance(VarType, ir.PointerType):
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return ir.Constant(ir.IntType(64), Value)
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if isinstance(VarType, (ir.FloatType, ir.DoubleType)):
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return ir.Constant(VarType, float(Value))
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if isinstance(VarType, str) and '*' in VarType:
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return ir.Constant(ir.IntType(64), Value)
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if isinstance(VarType, str):
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resolved: Any = _CR.ResolveName(VarType) or _CR.LLVMToCType(VarType)
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if resolved:
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ctype_cls: type = resolved[0] if isinstance(resolved, tuple) else resolved
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inst: Any = ctype_cls()
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size: int = getattr(inst, 'Size', 32)
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is_unsigned: bool = getattr(inst, 'IsSigned', True) is False
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mask: int = (1 << size) - 1
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return ir.Constant(ir.IntType(size), Value & mask)
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llvm_match: re.Match | None = re.match(r'^i(\d+)$', VarType)
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if llvm_match:
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width: int = int(llvm_match.group(1))
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return ir.Constant(ir.IntType(width), Value & ((1 << width) - 1))
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if Value < 0 or Value > 0xFFFFFFFF:
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return ir.Constant(ir.IntType(64), Value)
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return ir.Constant(ir.IntType(32), Value & 0xFFFFFFFF)
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elif isinstance(Value, float):
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if VarType and isinstance(VarType, ir.FloatType):
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return ir.Constant(VarType, Value)
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elif VarType and isinstance(VarType, ir.DoubleType):
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return ir.Constant(VarType, Value)
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return ir.Constant(ir.DoubleType(), Value)
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elif isinstance(Value, str):
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is_wide: bool = getattr(Node, 'kind', None) == 'u'
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# 引号类型推断：单引号单字符 → i8，双引号/多字符/三重 → i8*，空 → 0(None)
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quote_char: str | None = None
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is_triple: bool = False
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if not is_wide:
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col_offset: int = getattr(Node, 'col_offset', 0)
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node_lineno: int = getattr(Node, 'lineno', 0)
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# AST 的 lineno 可能不准确（常量节点可能指向下一行），
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# 因此在 lineno 和 lineno-1 两行中查找引号
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for try_lineno in (node_lineno, node_lineno - 1):
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source_line: str | None = Gen._get_source_line(try_lineno)
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if source_line and col_offset < len(source_line):
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ch: str = source_line[col_offset]
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if ch in ("'", '"'):
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quote_char = ch
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if col_offset + 2 < len(source_line) and source_line[col_offset:col_offset + 3] in ("'''", '"""'):
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is_triple = True
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break
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# 空字符串 → 创建指向 \0 的全局变量 (而非 null, 避免 strcmp 解引用空指针崩溃)
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# 走与非空字符串相同的路径, 由下方 else 分支处理
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# 单引号单字符（非三重）→ i8
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is_char_literal: bool = (not is_triple) and (quote_char == "'") and (len(Value) == 1) and not is_wide
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if is_char_literal:
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if VarType is not None and isinstance(VarType, ir.PointerType):
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pass # 类型不匹配：目标是 ptr 但值是 char，走 string 路径
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elif isinstance(VarType, ir.IntType):
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return ir.Constant(VarType, ord(Value[0]))
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elif isinstance(VarType, str):
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resolved = _CR.ResolveName(VarType) or _CR.LLVMToCType(VarType)
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if resolved:
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ctype_cls = resolved[0] if isinstance(resolved, tuple) else resolved
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inst = ctype_cls()
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size = getattr(inst, 'Size', 32)
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return ir.Constant(ir.IntType(size), ord(Value[0]))
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llvm_match = re.match(r'^i(\d+)$', VarType)
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if llvm_match:
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return ir.Constant(ir.IntType(int(llvm_match.group(1))), ord(Value[0]))
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elif VarType is not None:
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return ir.Constant(ir.IntType(8), ord(Value[0]))
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else:
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# 无类型提示：单引号单字符默认为 i8
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return ir.Constant(ir.IntType(8), ord(Value[0]))
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if is_wide:
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str_value: str = Value + '\x00'
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wide_chars: list[int] = [ord(c) for c in str_value]
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target_count: int = len(wide_chars)
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str_type: ir.ArrayType = ir.ArrayType(ir.IntType(16), target_count)
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gv_name: str = f"str_const_{Gen.string_const_counter}"
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gv: ir.GlobalVariable = ir.GlobalVariable(Gen.module, str_type, name=gv_name)
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gv.initializer = ir.Constant(str_type, wide_chars)
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gv.linkage = 'internal'
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Gen.string_const_counter += 1
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ptr: Any = Gen.builder.gep(gv, [ir.Constant(ir.IntType(32), 0), ir.Constant(ir.IntType(32), 0)], name=f"{gv_name}_cast")
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return ptr
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else:
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str_value = Value + '\x00'
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str_bytes: bytes = str_value.encode('utf-8')
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target_count = len(str_bytes)
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if isinstance(VarType, ir.ArrayType) and isinstance(VarType.element, ir.IntType) and VarType.element.width == 8:
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target_count = VarType.count
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if len(str_bytes) < target_count:
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str_bytes = str_bytes + b'\x00' * (target_count - len(str_bytes))
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else:
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str_bytes = str_bytes[:target_count]
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str_type = ir.ArrayType(ir.IntType(8), target_count)
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gv_name = f"str_const_{Gen.string_const_counter}"
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gv = ir.GlobalVariable(Gen.module, str_type, name=gv_name)
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gv.initializer = ir.Constant(str_type, bytearray(str_bytes))
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gv.linkage = 'internal'
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Gen.string_const_counter += 1
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ptr = Gen.builder.gep(gv, [ir.Constant(ir.IntType(32), 0), ir.Constant(ir.IntType(32), 0)], name=f"{gv_name}_cast")
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return ptr
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return ir.Constant(ir.IntType(32), 0)
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def _HandleNameLlvm(self, Node: ast.Name, VarType: ir.Type | str | None = None) -> ir.Value:
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Gen: LlvmCodeGenerator = self.Trans.LlvmGen
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VarName: str = Node.id
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define_constants: dict[str, Any] = getattr(Gen, '_define_constants', {})
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if VarName in define_constants:
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val: Any = define_constants[VarName]
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if isinstance(val, int):
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# Use VarType hint if available to avoid unnecessary type mismatch
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if VarType is not None and isinstance(VarType, ir.IntType):
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return ir.Constant(VarType, val & ((1 << VarType.width) - 1))
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if VarName in Gen.var_signedness and Gen.var_signedness[VarName]:
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if val < -(1 << 31) or val > 0xFFFFFFFF:
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return ir.Constant(ir.IntType(64), val & 0xFFFFFFFFFFFFFFFF)
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return ir.Constant(ir.IntType(32), val & 0xFFFFFFFF)
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if val < -(1 << 31) or val > 0xFFFFFFFF:
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return ir.Constant(ir.IntType(64), val)
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return ir.Constant(ir.IntType(32), val & 0xFFFFFFFF)
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elif isinstance(val, float):
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return ir.Constant(ir.DoubleType(), val)
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elif isinstance(val, str):
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return Gen._create_string_global(val)
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# 如果 _define_constants 中没有，尝试从符号表查找
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if VarName not in getattr(Gen, '_define_constants', {}):
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try:
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sym_info: Any = self.translator.SymbolTable.lookup(VarName)
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if sym_info and sym_info.IsDefine and sym_info.DefineValue is not None:
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val = sym_info.DefineValue
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if isinstance(val, int):
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# Use VarType hint if available
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if VarType is not None and isinstance(VarType, ir.IntType):
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return ir.Constant(VarType, val & ((1 << VarType.width) - 1))
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if val < -(1 << 31) or val > 0xFFFFFFFF:
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return ir.Constant(ir.IntType(64), val)
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return ir.Constant(ir.IntType(32), val & 0xFFFFFFFF)
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elif isinstance(val, float):
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return ir.Constant(ir.DoubleType(), val)
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elif isinstance(val, str):
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return Gen._create_string_global(val)
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except Exception as _e:
|
||
if _config_mode == "strict":
|
||
self.Trans.LogWarning(f"异常被忽略: {_e}")
|
||
# 优先检查 variables（alloca），因为变量可能已被 += 等操作迁移到 variables
|
||
if VarName in Gen.variables and Gen.variables[VarName] is not None:
|
||
VarPtr: Any = Gen.variables[VarName]
|
||
if isinstance(VarPtr, ir.GlobalVariable) and isinstance(VarPtr.type, ir.PointerType) and isinstance(VarPtr.type.pointee, (ir.IdentifiedStructType, ir.LiteralStructType, ir.ArrayType)):
|
||
if VarName in Gen.global_struct_class:
|
||
Gen.var_struct_class[VarName] = Gen.global_struct_class[VarName]
|
||
return VarPtr
|
||
if isinstance(VarPtr.type, ir.PointerType) and isinstance(VarPtr.type.pointee, (ir.IdentifiedStructType, ir.LiteralStructType, ir.ArrayType)):
|
||
if VarName in Gen.global_struct_class:
|
||
Gen.var_struct_class[VarName] = Gen.global_struct_class[VarName]
|
||
return VarPtr
|
||
loaded: ir.Value = Gen._load(VarPtr, name=VarName)
|
||
# 大端局部变量：读取时 bswap 还原
|
||
loaded = Gen._apply_bswap_if_big(loaded, getattr(Gen, 'local_var_byteorders', {}).get(VarName, ""), f"bswap_load_{VarName}")
|
||
return loaded
|
||
if VarName in Gen._reg_values:
|
||
return Gen._reg_values[VarName]
|
||
if VarName in Gen._direct_values:
|
||
return Gen._direct_values[VarName]
|
||
if VarName in Gen.global_vars and VarName in Gen.module.globals:
|
||
GVar: Any = Gen.module.globals[VarName]
|
||
Gen.variables[VarName] = GVar
|
||
if isinstance(GVar, ir.Function):
|
||
return GVar
|
||
if isinstance(GVar.type, ir.PointerType) and isinstance(GVar.type.pointee, (ir.IdentifiedStructType, ir.LiteralStructType, ir.ArrayType)):
|
||
return GVar
|
||
return Gen._load(GVar, name=VarName)
|
||
if VarName in Gen.module.globals:
|
||
GVar = Gen.module.globals[VarName]
|
||
Gen.variables[VarName] = GVar
|
||
if isinstance(GVar, ir.Function):
|
||
return GVar
|
||
if VarName in Gen.global_struct_class:
|
||
Gen.var_struct_class[VarName] = Gen.global_struct_class[VarName]
|
||
if isinstance(GVar.type, ir.PointerType) and isinstance(GVar.type.pointee, (ir.IdentifiedStructType, ir.LiteralStructType, ir.ArrayType)):
|
||
return GVar
|
||
return Gen._load(GVar, name=VarName)
|
||
if VarName == 'self':
|
||
return Gen.GetVarPtr('self')
|
||
if Gen._has_function(VarName):
|
||
func: Any = Gen._get_function(VarName)
|
||
if func:
|
||
return Gen.builder.bitcast(func, ir.IntType(8).as_pointer(), name=f"funcptr_{VarName}")
|
||
if VarName in Gen.class_methods:
|
||
return ir.Constant(ir.IntType(8).as_pointer(), None)
|
||
if VarName == 'True' or VarName == 'False':
|
||
return ir.Constant(ir.IntType(32), 1 if VarName == 'True' else 0)
|
||
SymInfo: Any = self.Trans.SymbolTable.lookup(VarName)
|
||
if SymInfo:
|
||
if SymInfo.IsEnumMember and isinstance(SymInfo.value, int):
|
||
return ir.Constant(ir.IntType(32), SymInfo.value)
|
||
if SymInfo.IsFunction or SymInfo.IsFuncPtr:
|
||
MangledName: str = Gen._mangle_func_name(VarName)
|
||
if MangledName in Gen.module.globals:
|
||
g: Any = Gen.module.globals[MangledName]
|
||
if isinstance(g, ir.Function):
|
||
Gen.functions[VarName] = g
|
||
return Gen.builder.bitcast(g, ir.IntType(8).as_pointer(), name=f"funcptr_{VarName}")
|
||
for sha1 in Gen.ModuleSha1Map.values():
|
||
prefixed: str = f"{sha1}.{VarName}"
|
||
if prefixed in Gen.module.globals:
|
||
g = Gen.module.globals[prefixed]
|
||
if isinstance(g, ir.Function):
|
||
Gen.functions[VarName] = g
|
||
return Gen.builder.bitcast(g, ir.IntType(8).as_pointer(), name=f"funcptr_{VarName}")
|
||
t_c_imported: dict[str, tuple[str, str]] = getattr(self.Trans, '_t_c_imported_names', {})
|
||
if VarName in t_c_imported:
|
||
src_module: str
|
||
src_name: str
|
||
src_module, src_name = t_c_imported[VarName]
|
||
virtual_attr: ast.Attribute = ast.Attribute(
|
||
value=ast.Name(id=src_module, ctx=ast.Load()),
|
||
attr=src_name,
|
||
ctx=ast.Load()
|
||
)
|
||
ast.copy_location(virtual_attr, Node)
|
||
return self.Trans.ExprAttrHandle._HandleAttributeLlvm(virtual_attr)
|
||
return ir.Constant(ir.IntType(32), 0) |