compiler.py 文件源码

def visit_AssignBlock(self, node, frame):
        self.push_assign_tracking()
        block_frame = frame.inner()
        # This is a special case.  Since a set block always captures we
        # will disable output checks.  This way one can use set blocks
        # toplevel even in extended templates.
        block_frame.require_output_check = False
        block_frame.symbols.analyze_node(node)
        self.enter_frame(block_frame)
        self.buffer(block_frame)
        self.blockvisit(node.body, block_frame)
        self.newline(node)
        self.visit(node.target, frame)
        self.write(' = (Markup if context.eval_ctx.autoescape '
                   'else identity)(concat(%s))' % block_frame.buffer)
        self.pop_assign_tracking(frame)
        self.leave_frame(block_frame)

    # -- Expression Visitors