添加 raw 内置函数; 重新禁止 unsafe 包

internal/backends/compiler_c/compile_func.go

@@ -607,6 +607,8 @@ func (g *functionGenerator) genBuiltin(call *ssa.CallCommon) cir.Expr {
 		fn_type := ctypes.NewFuncType(cir.ToCType(call.Value.(*ssa.Builtin).Type().(*types.Signature).Results()), args_type)
 		function := cir.NewVar("$wartc::Append", fn_type)
 		return cir.NewCallExpr(function, args)
+	case "raw":
+		logger.Fatal("Todo.raw:", call.Value)
 	}
 	logger.Fatal("Todo:", call.Value)
 	return nil

internal/types/builtins.go

@@ -527,6 +527,22 @@ func (check *Checker) builtin(x *operand, call *ast.CallExpr, id builtinId) (_ b
 			check.recordBuiltinType(call.Fun, makeSig(x.typ))
 		}
 
+	case _Raw:
+		if _, ok := x.typ.Underlying().(*Slice); !ok {
+			check.invalidArg(x.pos(), "%s is not a slice", x.typ)
+			return
+		}
+
+		retType := NewSlice(Typ[Uint8])
+		if check.Types != nil {
+			check.recordBuiltinType(
+				call.Fun, makeSig(retType, x.typ),
+			)
+		}
+
+		x.mode = value
+		x.typ = retType
+
 	case _Printf:
 		S := x.typ
 		if s, _ := S.Underlying().(*Basic); s == nil || (s.kind != String && s.kind != UntypedString) {

internal/types/universe.go

@@ -156,6 +156,7 @@ const (
 	_Recover
 
 	// wa
+	_Raw
 	_Printf
 
 	// wz
@@ -192,6 +193,7 @@ var predeclaredFuncs = [...]struct {
 	_Real:    {"real", 1, false, expression},
 	_Recover: {"recover", 0, false, statement},
 
+	_Raw:    {"raw", 1, false, expression},
 	_Printf: {"printf", 1, true, statement},
 
 	_长: {"长", 1, false, expression},

waroot/waroot.go

@@ -159,7 +159,6 @@ var stdPkgs = []string{
 	"unicode",         // API 部分
 	"unicode/ctypes",  // API 完整, 测试已覆盖
 	"unicode/utf8",    // API 完整, 测试已覆盖
-	"unsafe",
 }
 
 var wzStdPkgs = []string{