parse scripts by AST in converter module.

Use the AST replaces the importlib/inspect modules to analyze and modify network definition script.
The importlib/inspect must load python script to analyze, but AST analysis is static code analysis and is very secure.

mindinsight/mindconverter/ast_edits.py

@@ -0,0 +1,579 @@
+# Copyright 2020 Huawei Technologies Co., Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless REQUIRED by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============================================================================
+"""Convert for Python scripts according API mapping information."""
+
+import ast
+import logging
+import re
+from enum import Enum
+
+import pasta
+from pasta.augment import import_utils
+
+from mindinsight.mindconverter.code_analysis import CodeAnalyzer
+from mindinsight.mindconverter.code_analysis import APIAnalysisSpec
+from mindinsight.mindconverter.config import ALL_MAPPING
+from mindinsight.mindconverter.config import NN_LIST
+from mindinsight.mindconverter.config import ALL_TORCH_APIS
+from mindinsight.mindconverter.config import ALL_2P_LIST
+from mindinsight.mindconverter.config import UNSUPPORTED_WARN_INFOS
+from mindinsight.mindconverter.config import ALL_UNSUPPORTED
+from mindinsight.mindconverter.common.log import logger
+from mindinsight.mindconverter.common.exceptions import NodeTypeNotSupport
+from mindinsight.mindconverter.forward_call import ForwardCall
+
+LOG_FMT_CONVERT = "[Convert] '%s' is converted to '%s'."
+LOG_FMT_NOT_CONVERT = "[UnConvert] '%s' didn't convert. %s"
+LOG_FMT_PROMPT_INFO = "[INFO] %s"
+LOG_SUGGESTION_MANUAL_CONVERT = "Please manual convert the code, along with the code associated with it."
+
+
+class ApiMatchingEnum(Enum):
+    """Node edge type enum."""
+    NOT_API = 'not an api name'
+    API_INFER = 'infer api name to map'
+    API_STANDARD = 'api name in the correct format'
+    API_FOUND = 'found an api name in api list'
+    API_MATCHED = 'api is matched to map'
+
+
+class _ConvertReport:
+    """Report log of converting source code."""
+
+    def __init__(self, is_stub=False):
+        self._is_stub = is_stub
+        self._max_line = 0
+        self._log = []  # report log, type is (severity, line, col, msg)
+
+    def _add_log(self, severity, line, col, msg):
+        """Add log."""
+        if self._is_stub:
+            return
+        if isinstance(line, int) and isinstance(col, int):
+            self._log.append((severity, line, col, msg))
+            if self._max_line < line:
+                self._max_line = line
+
+    def info(self, line, col, msg):
+        """Interface to add infer log"""
+        self._add_log(logging.INFO, line, col, msg)
+
+    def warning(self, line, col, msg):
+        """Interface to add warning log"""
+        self._add_log(logging.WARNING, line, col, msg)
+
+    def get_logs(self):
+        """Get convert logs"""
+        logs = []
+        # sort rule: line * self._max_line + col
+        self._log.sort(key=lambda log: log[1] * self._max_line + log[2])
+        for log_info in self._log:
+            log_info = "line %d:%d: %s" % (log_info[1], log_info[2], log_info[3])
+            logs.append(log_info)
+        return logs
+
+
+class _LineColEditVisitor(ast.NodeVisitor):
+    """
+    Update line number and col offset of ast node.
+
+    Use the line and column number of the original code to update
+    the line and column number of the new code replaced with the original code.
+    """
+
+    class _NodeInfo:
+        """NodeInfo class definition."""
+        def __init__(self, node):
+            self.node = node
+            self.call_list = []  # Used to save all ast.Call node in self._node
+
+    def __init__(self):
+        self._dst_node_info = None
+        self._src_node_info = None
+        self._visiting = self._src_node_info  # Used to point to the visiting node
+
+    def update(self, replace_with_node, src_node):
+        """Update the line and column number of the new code replaced with the original code."""
+        replace_with_node.lineno = src_node.lineno
+        replace_with_node.col_offset = src_node.col_offset
+        self._dst_node_info = self._NodeInfo(replace_with_node)
+        self._src_node_info = self._NodeInfo(src_node)
+        self._visiting = self._src_node_info
+        self.visit(self._visiting.node)
+
+        self._visiting = self._dst_node_info
+        self.visit(self._visiting.node)
+
+        self._update_line_col()
+
+    def visit_Call(self, node):
+        """Callback function when visit AST tree"""
+        self._visiting.call_list.append(node)
+        self.generic_visit(node)
+
+    def _update_line_col(self):
+        """Update the line and column number information for all ast.Call node."""
+        dst_call_list = list(self._dst_node_info.call_list)
+        src_call_list = list(self._src_node_info.call_list)
+        len_diff = len(dst_call_list) - len(src_call_list)
+
+        # After MindSpore api replaces Torch api, more calls are generated.
+        # For example, out.view() is replaced with P.Reshape()(out).
+        # out.view() has only one call, but P.Reshape()(out) has two calls.
+        # To match the replaced calls, the calls of out.view is padded to the same quantity.
+        if len_diff > 0:
+            src_call_list = [src_call_list[0]] * len_diff + src_call_list
+
+        for dst_call, src_call in zip(dst_call_list, src_call_list):
+            dst_call.lineno = src_call.lineno
+            dst_call.col_offset = src_call.col_offset
+
+            if not dst_call.args:
+                continue
+
+            # When out.size().view(1, ...) transforms to P.Reshape()(out.size(), 1, ...),
+            # in this case, the column of parameter out.size() will be bigger than the following parameters.
+            # To ensure the sequence of parameters, adjust the column of the second parameter.
+            args = []
+            for arg in dst_call.args:
+                if self._check_arg2update(arg):
+                    args.append(arg)
+            for arg in args:
+                arg.lineno = dst_call.lineno
+                arg.col_offset += dst_call.col_offset
+
+    @staticmethod
+    def _check_arg2update(arg):
+        # Only the col_offset of the first line code is re-counted, needs to be corrected.
+        # When the arg is a function call, its col_offset is handled separately.
+        if not isinstance(arg, ast.Call) and arg.lineno == 1:
+            return True
+        return False
+
+
+class AstEditVisitor(ast.NodeVisitor):
+    """AST Visitor that process function calls.
+
+    Converts function calls from torch api to MindSpore api using api mapping information.
+    """
+
+    def __init__(self):
+        self._process_log = _ConvertReport()
+        self._tree = None
+        self._code_analyzer = None
+        self._stack = []  # Used to easily access the parent node
+        self._forward_list = {}
+        self._is_forward_function = False  # Used to allow access the visiting function forward attribute
+        self._new_call_nodes = []  # Used to save new ast.call nodes
+
+    def process(self, ast_tree):
+        """
+        Convert source code to MindSpore code.
+
+        Args:
+            ast_tree (AST): The root node of the source code.
+        """
+        self.__init__()
+        self._tree = ast_tree
+        self._code_analyzer = CodeAnalyzer()
+        self._code_analyzer.process(self._tree)
+
+        self._forward_list = ForwardCall(self._tree).calls
+        # replace python function under nn.Module
+        self._convert_api()
+
+        # replace external reference statements
+        self._convert_external_reference()
+
+    def get_logs(self):
+        """Get conversion report."""
+        return self._process_log.get_logs()
+
+    def _convert_cell(self, cell_scope):
+        """
+        Convert a PyTorch Module class into MindSpore Cell class.
+
+        Args:
+            cell_scope (pasta.base.Scope): The network class definition node inherits from torch.nn.Module.
+        """
+        cell_ast_node = cell_scope.node
+        line_no = cell_ast_node.lineno
+        logger.info("Line %3d: start converting nn.Module %s", line_no, self._code_analyzer.get_name(cell_ast_node))
+
+        class_elements = self._code_analyzer.network_definitions()['cell']
+        # step1. update function definition
+        for func_scope in class_elements.get(cell_scope, []):
+            self._update_function_def(func_scope)
+
+        # step2. update base name of class
+        self._update_base_name(cell_scope)
+
+    def _update_base_name(self, class_def_scope):
+        """
+        Update base name of class.
+
+        Args:
+            class_def_scope (ast.ClassDef): Class definition node.
+        """
+        base_name_mapping = APIAnalysisSpec.base_name_mapping
+        class_def_node = class_def_scope.node
+        base_class_nodes = class_def_scope.node.bases
+        # update base class name
+        for base_class_node in base_class_nodes:
+            base_name = base_class_node.attr
+            if base_name in APIAnalysisSpec.get_network_base_class_names():
+                old_code = pasta.dump(base_class_node)
+                if base_name in base_name_mapping:
+                    new_code = 'nn.' + base_name_mapping[base_class_node.attr]
+                    new_node = pasta.parse(new_code)
+                    pasta.ast_utils.replace_child(class_def_node, base_class_node, new_node)
+                    self._process_log.info(base_class_node.lineno, base_class_node.col_offset, LOG_FMT_CONVERT %
+                                           (old_code, new_code))
+                else:
+                    self._process_log.info(base_class_node.lineno, base_class_node.col_offset, LOG_FMT_NOT_CONVERT %
+                                           (old_code, ''))
+
+    def _update_function_def(self, func_scope):
+        """
+        Convert a PyTorch function into MindSpore function.
+
+        Args:
+            func_scope (pasta.base.scope.Scope): The node scope of function definition.
+        """
+        is_forward = self._judge_forward(func_scope)
+        # step1. convert the content of the function.
+        self._convert_function(func_scope, is_forward)
+
+        # step2. replace function name if name is forward
+        func_ast_node = func_scope.node
+        old_func_name = 'forward'
+        new_func_name = 'construct'
+        if func_ast_node.name == old_func_name:
+            func_ast_node.name = new_func_name
+            self._process_log.info(func_ast_node.lineno, func_ast_node.col_offset,
+                                   LOG_FMT_CONVERT % (old_func_name, new_func_name))
+
+    def _convert_api(self):
+        """Convert PyTorch api call to MindSpore api call in a function."""
+        tasks = []
+
+        convert_elements = self._code_analyzer.network_definitions()
+        for func_node_scope in convert_elements.get("functions", []):
+            is_forward = self._judge_forward(func_node_scope)
+            tasks.append((self._convert_function, (func_node_scope, is_forward)))
+        for class_scope in convert_elements.get("cell", []).keys():
+            tasks.append((self._convert_cell, (class_scope,)))
+
+        for convert_fun, args in tasks:
+            convert_fun(*args)
+
+    def _convert_external_reference(self):
+        """Convert import statements."""
+        name_replace = APIAnalysisSpec.import_name_mapping
+        replace_imports = list(name_replace.values())
+
+        for ref_info in self._code_analyzer.external_references.values():
+            external_ref_info = ref_info['external_ref_info']
+            parent_node = ref_info['parent_node']
+            if parent_node is None:
+                continue
+            code = pasta.dump(parent_node)
+            if external_ref_info.name in APIAnalysisSpec.get_convertible_external_names():
+                external_ref_info = ref_info['external_ref_info']
+                if external_ref_info.name in name_replace.keys():
+                    import_utils.remove_import_alias_node(self._code_analyzer.root_scope, external_ref_info.node)
+                    replace_info = name_replace[external_ref_info.name]
+                    new_ref_name = replace_info[1]
+                    new_external_name = replace_info[0]
+                    if new_ref_name:
+                        new_code = f'import {new_external_name} as {new_ref_name}'
+                    else:
+                        new_code = f'import {new_external_name}'
+
+                    self._process_log.info(parent_node.lineno, parent_node.col_offset, LOG_FMT_CONVERT %
+                                           (code.strip(), new_code.strip()))
+            elif external_ref_info.name.startswith('torch.'):
+                self._process_log.warning(parent_node.lineno, parent_node.col_offset, LOG_FMT_NOT_CONVERT %
+                                          (code.strip(), LOG_SUGGESTION_MANUAL_CONVERT))
+            else:
+                pass
+
+        # Insert import in reverse order, display in forward order.
+        for idx in range(len(replace_imports) - 1, -1, -1):
+            replace_import = replace_imports[idx]
+            if replace_import[1]:
+                self._add_import(name_to_import=replace_import[0], as_name=replace_import[1])
+            else:
+                self._add_import(name_to_import=replace_import[0])
+
+    def _add_import(self, name_to_import, as_name=None):
+        """
+        Adds an import to the ast tree.
+
+        Args:
+            name_to_import: (string) The absolute name to import.
+            as_name: (string) The alias for the import ("import name_to_import as asname")
+        """
+        new_alias = ast.alias(name=name_to_import, asname=as_name)
+        import_node = ast.Import(names=[new_alias])
+
+        # Insert the node at the top of the module
+        self._tree.body.insert(1 if pasta.base.ast_utils.has_docstring(self._tree) else 0, import_node)
+
+    def _convert_function(self, func_scope, is_forward):
+        """
+        Convert a PyTorch function into MindSpore function.
+
+        Args:
+            func_scope (pasta.base.scope.Scope): The node scope of function definition.
+            is_forward (boolean): If the function is defined in forward function in nn.Module in torch.
+        """
+        func_ast_node = func_scope.node
+        line_no = func_ast_node.lineno
+        logger.info("Line %3d: start converting function %s()", line_no, func_ast_node.name)
+
+        parent = func_scope.parent_scope.node
+        self._stack.clear()
+        self._new_call_nodes.clear()
+        if parent:
+            self._stack.append(parent)
+
+        self._is_forward_function = is_forward
+        self.visit(func_scope.node)
+
+    def _judge_forward(self, func_scope):
+        """
+        Check if function is a forward function.
+
+        Args:
+            func_scope (pasta.base.scope.Scope): The node scope of function definition.
+
+        Returns:
+            boolean, True or False
+        """
+        is_forward = func_scope.node in self._forward_list.values()
+        if is_forward:
+            logger.debug("%s is a forward function", self._code_analyzer.get_name(func_scope))
+        return is_forward
+
+    # Overridden to maintain stack information to access parent node
+    def visit(self, node):
+        """Visit a ast tree."""
+        self._stack.append(node)
+        super(AstEditVisitor, self).visit(node)
+        self._stack.pop()
+
+    def _mapping_standard_api_name(self, api_name):
+        """Get mapping from external reference name to standard external reference name"""
+        standard_name = api_name
+        if not self._code_analyzer.is_standard_external_ref:
+            # key is real ref name, value is standard ref name.
+            mapping_names = self._mapping_standard_external_ref()
+            api_name_parts = api_name.split('.')
+            api_name_parts[0] = mapping_names.get(api_name_parts[0], api_name_parts[0])
+            standard_name = '.'.join(api_name_parts)
+        return standard_name
+
+    def _infer_api_name(self, call_func_node, check_context=True):
+        """Infer the call name.
+
+        Examples:
+            1. nn.Sequential inferred to nn.Sequential
+            2. mmm.size inferred to .size if import torch.nn as nn
+            3. mmm.size inferred to mmm.size if import torch.nn as mmm
+        """
+        match_case = ApiMatchingEnum.NOT_API
+        api_name = None
+        call_name = pasta.dump(call_func_node)
+
+        is_include_sub_call = self._is_include_sub_call(call_func_node)
+        if is_include_sub_call:
+            name_attributes = call_name.rsplit('.', 1)
+        else:
+            name_attributes = call_name.split('.')
+
+        # rewritten external module name
+        # e.g., mm.ReLU will be written to nn.ReLU if 'import torch.nn as mm' in script.
+        if check_context and not self._code_analyzer.is_standard_external_ref:
+            standard_name = self._mapping_standard_api_name(name_attributes[0])
+        else:
+            standard_name = name_attributes[0]
+
+        if standard_name in ["nn", "F", "torch"]:
+            match_case = ApiMatchingEnum.API_STANDARD
+            api_name = call_name
+        else:
+            # only infer function for tensor object.
+            # e.g., api_call_name is out.view, .view is an api name for out which is maybe a tensor object.
+            # e.g., 'xxxx'.size can be not inferred to .size, because string is not a tensor object.
+            first_name = standard_name.split('.')[0]
+            if not re.search(r'\W', first_name) and len(name_attributes) > 1:
+                api_name = '.' + name_attributes[-1]
+                match_case = ApiMatchingEnum.API_INFER
+        return api_name, match_case
+
+    @staticmethod
+    def _is_include_sub_call(call_func_node):
+        """"Inspect a sub call in call expression.
+
+        Examples:
+            1. nn.functional.relu() return False
+            2. nn.functional.relu(out).size() return True. nn.functional.relu(out) is sub call.
+            3. nn.functional.relu(out=out.size()).size() return False. out.size() is not sub call of argument.
+        """
+        is_include_call = False
+        try:
+            sub_node = call_func_node
+            while sub_node and not isinstance(sub_node, ast.Call):
+                sub_node = sub_node.value
+            if isinstance(sub_node, ast.Call):
+                is_include_call = True
+        except AttributeError:
+            is_include_call = False
+        return is_include_call
+
+    def match_api(self, call_func_node, is_forward):
+        """
+        Check api name to convert, check api name ok with a is_forward condition.
+
+        Args:
+            call_func_node (ast.Attribute): The call.func node.
+            is_forward (bool): whether api belong to forward.
+
+        Returns:
+            str, the standard api name used to match.
+            ApiMappingEnum, the match result.
+        """
+        api_name, match_case = self._infer_api_name(call_func_node)
+        api_call_name = pasta.dump(call_func_node)
+        is_tensor_obj_call = False
+        if api_name != api_call_name:
+            is_tensor_obj_call = True
+
+        standard_api_call_name = api_name
+
+        # rewritten external module name
+        # e.g., mm.ReLU will be written to nn.ReLU if 'import torch.nn as mm' in script.
+        if not is_tensor_obj_call and not self._code_analyzer.is_standard_external_ref:
+            standard_api_call_name = self._mapping_standard_api_name(api_name)
+
+        if standard_api_call_name in ALL_TORCH_APIS:
+            match_case = ApiMatchingEnum.API_FOUND
+            if (not is_forward and standard_api_call_name in NN_LIST) or \
+                    (is_forward and standard_api_call_name in ALL_2P_LIST):
+                match_case = ApiMatchingEnum.API_MATCHED
+
+        return standard_api_call_name, match_case
+
+    def mapping_api(self, call_node, check_context=True):
+        """
+        Convert api_name in code to MindSpore api, if api_name is a python api, code will not convert.
+
+        If do not check context of the script, the code represented by the node must be written in the standard way.
+
+        Args:
+            call_node (ast.Call): The ast node to convert.
+            check_context (boolean): If True, the code context will be checked. Default is True.
+
+        Returns:
+            str, the converted code.
+        """
+        if not isinstance(call_node, ast.Call):
+            raise NodeTypeNotSupport("It is not ast.Call node.")
+        code = pasta.dump(call_node)
+        api_call_name = pasta.dump(call_node.func)
+        if api_call_name.startswith('self.'):
+            return code
+
+        # find full api expected to be converted. eg:expr="nn.Conv2d(1,2,3)" args_str="(1,2,3)"
+        args_str = code[len(api_call_name):].strip()
+
+        try:
+            api_name, _ = self._infer_api_name(call_node.func, check_context)
+            standard_api_call_name = api_call_name
+            if api_name != api_call_name:
+                # api name .view inferred from out.view, split tensor object name is out
+                tensor_obj_name = api_call_name[:-len(api_name)]
+                map_helper = ALL_MAPPING[api_name]
+                new_code = map_helper.convert(tensor_obj_name, args_str)
+            else:
+                # change to external ref name
+                # e.g., mm.ReLU will be changed to nn.ReLU if 'import torch.nn as mm' in script.
+                if check_context and not self._code_analyzer.is_standard_external_ref:
+                    standard_api_call_name = self._mapping_standard_api_name(api_name)
+
+                map_helper = ALL_MAPPING[standard_api_call_name]
+                new_code = map_helper.convert(standard_api_call_name, args_str)
+        except KeyError:
+            return code
+
+        return new_code
+
+    def visit_Call(self, node):
+        """Callback function when visit AST tree"""
+        code = pasta.dump(node)
+        api_name = pasta.dump(node.func)
+
+        # parent node first call is equal to this node, skip when parent node is replaced.
+        for parent_node in self._stack[:-1]:
+            if parent_node in self._new_call_nodes and pasta.dump(parent_node).startswith(api_name):
+                return
+        parent = self._stack[-2]
+        new_node = None
+        matched_api_name, match_case = self.match_api(node.func, self._is_forward_function)
+        if match_case in [ApiMatchingEnum.API_INFER, ApiMatchingEnum.API_MATCHED]:
+            if matched_api_name in ALL_MAPPING:
+                logger.info("Line %3d start converting API: %s", node.lineno, api_name)
+                new_code = self.mapping_api(node)
+                if new_code != code:
+                    new_node = pasta.parse(new_code).body[0].value
+                    # find the first call name
+                    new_api_name = new_code[:new_code.find('(')]
+                    self._process_log.info(node.lineno, node.col_offset, LOG_FMT_CONVERT % (api_name, new_api_name))
+            if matched_api_name in ALL_UNSUPPORTED:
+                warn_info = UNSUPPORTED_WARN_INFOS.get(api_name, '')
+                logger.warning("Line %3d: found unsupported API: %s%s", node.lineno, api_name, warn_info)
+                self._process_log.warning(node.lineno, node.col_offset, LOG_FMT_NOT_CONVERT % (api_name, warn_info))
+
+        elif match_case in [ApiMatchingEnum.API_STANDARD, ApiMatchingEnum.API_FOUND]:
+            self._process_log.warning(node.lineno, node.col_offset, LOG_FMT_NOT_CONVERT % (api_name, ''))
+        else:
+            pass
+
+        if parent and new_node:
+            update_line_col = _LineColEditVisitor()
+            update_line_col.update(new_node, node)
+            pasta.ast_utils.replace_child(parent, node, new_node)
+            self._new_call_nodes.append(new_node)
+
+            node = new_node
+            self._stack[-1] = node
+        try:
+            self.generic_visit(node)
+        except Exception:
+            logger.error('original code:%s, new code:%s', code, new_code, exc_info=True)
+            raise
+
+    def _mapping_standard_external_ref(self):
+        """Obtain the mapping dict of mapping the external references to standard external references."""
+        renames = {}
+        external_refs = self._code_analyzer.external_references
+        for ref_name, ref_info in external_refs.items():
+            external_ref_info = ref_info['external_ref_info']
+            if ref_name != 'nn' and external_ref_info.name == 'torch.nn':
+                renames[ref_name] = 'nn'
+            elif ref_name != 'F' and external_ref_info.name == 'torch.nn.functional':
+                renames[ref_name] = 'F'
+        return renames

mindinsight/mindconverter/cli.py

@@ -186,25 +186,23 @@ def cli_entry():
     mode = permissions << 6
     os.makedirs(args.output, mode=mode, exist_ok=True)
     os.makedirs(args.report, mode=mode, exist_ok=True)
-    _run(args.in_file, args.output, '', args.report)
+    _run(args.in_file, args.output, args.report)
 
 
-def _run(in_files, out_dir, in_module, report):
+def _run(in_files, out_dir, report):
     """
     Run converter command.
 
     Args:
         in_files (str): The file path or directory to convert.
         out_dir (str): The output directory to save converted file.
-        in_module (str): The module name to convert.
         report (str): The report file path.
     """
     files_config = {
         'root_path': in_files if in_files else '',
         'in_files': [],
         'outfile_dir': out_dir,
-        'report_dir': report,
-        'in_module': in_module
+        'report_dir': report
     }
     if os.path.isfile(in_files):
         files_config['root_path'] = os.path.dirname(in_files)

mindinsight/mindconverter/code_analysis.py

@@ -0,0 +1,399 @@
+# Copyright 2020 Huawei Technologies Co., Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless REQUIRED by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============================================================================
+"""code analysis module"""
+import ast
+
+import pasta
+from pasta.base import scope
+
+from mindinsight.mindconverter.common.exceptions import ScriptNotSupport
+
+
+class APIAnalysisSpec:
+    """API analysis specifications"""
+
+    import_name_mapping = {'torch': ['mindspore', None],
+                           'torch.nn': ['mindspore.nn', 'nn'],
+                           'torch.nn.functional': ['mindspore.ops.operations', 'P']}
+
+    base_name_mapping = {'Module': 'Cell',
+                         'Sequential': 'SequentialCell'
+                         }
+
+    @classmethod
+    def get_convertible_external_names(cls):
+        """
+        Obtain the convertible external names.
+
+        The external name is the full dotted name being referenced.
+        """
+        return cls.import_name_mapping.keys()
+
+    @staticmethod
+    def get_network_base_class_names():
+        """Obtain the base names which network class base from"""
+        return ['Module',
+                'Sequential',
+                'ModuleList',
+                'ModuleDict',
+                'ParameterList',
+                'ParameterDict']
+
+    @staticmethod
+    def check_external_alias_ref(ref_name, external_name):
+        """
+        Check 'import as' is standard.
+
+        Standard references are follow:
+        import torch.nn as nn
+        import torch.nn.functional as F
+
+        Args:
+            ref_name (str): The name that refers to the external_name.
+            external_name (str): The full dotted name being referenced. For examples:
+                1. 'import torch.nn as nn', torch.nn is external_name, nn is ref_name.
+                2. 'from torch import nn as mm, torch.nn is external_name, mm is ref_name which is not a standard name.
+
+        Returns:
+            boolean, True if ref_name is standard else False.
+        """
+        if ref_name != 'nn' and external_name == 'torch.nn':
+            is_standard = False
+        elif ref_name != 'F' and external_name == 'torch.nn.functional':
+            is_standard = False
+        else:
+            is_standard = True
+
+        return is_standard
+
+
+class CodeAnalyzer(ast.NodeVisitor):
+    """Code analyzer that analyzes PyTorch python script by AST Visitor.
+
+    CodeAnalyzer find the codes that need to be converted to MindSpore,
+    and provides the attributes related to the codes.
+    """
+
+    def __init__(self):
+        self._stack = []  # Used to easily access the parent node
+        self._external_references = {}
+        self._is_standard_external_ref = True
+        self._root_scope = None
+        # Used to save functions that need to be converted, value type is pasta.base.scope.Scope
+        self._network_functions = []
+
+        # Used to easily trace the function node
+        self._functions_stack = []
+
+        # key type is pasta.base.scope.Scope, value type is list
+        self._network_classes = {}
+
+    @property
+    def root_scope(self):
+        """The root scope of the python script code."""
+        return self._root_scope
+
+    @property
+    def is_standard_external_ref(self):
+        """Obtain whether the result is a standard external reference."""
+        return self._is_standard_external_ref
+
+    @property
+    def external_references(self):
+        """Obtain all external references in the analyzed code."""
+        return self._external_references
+
+    def network_definitions(self):
+        """Obtain the network definitions which need to be converted."""
+        return {"functions": self._network_functions,
+                "cell": self._network_classes}
+
+    def process(self, ast_tree):
+        """
+        Start to analyze the code.
+
+        Args:
+            ast_tree (AST): The root node of the source code.
+        """
+        self.__init__()
+        self._root_scope = scope.analyze(ast_tree)
+        self._pre_process()
+        self.visit(ast_tree)
+        if not self._network_classes:
+            msg = "model definition not be found."
+            raise ScriptNotSupport(msg)
+
+    @staticmethod
+    def _check_external_standard(external_refs):
+        """Check whether all external references are standard."""
+        is_standard = True
+        for external_name, external_ref_info in external_refs.items():
+            is_standard = APIAnalysisSpec.check_external_alias_ref(external_name, external_ref_info.name)
+            if not is_standard:
+                break
+        return is_standard
+
+    def _is_base_from_cell(self, node):
+        """
+        Check whether the node bases from cell classes which are defined in APIAnalysisSpec.
+
+        Args:
+            node (ast.ClassDef): The node which is a class definition.
+
+        Returns:
+            boolean, True if the check result is Passed else False.
+        """
+        if self._is_ref_convertible_imports(node):
+            whole_name = self._get_whole_name(node)
+            if whole_name.split('.')[-1] in APIAnalysisSpec.get_network_base_class_names():
+                return True
+        return False
+
+    def _pre_process(self):
+        """Preprocessor checks the code before analyzing."""
+        is_torch = False
+
+        # check whether the code imports torch.
+        for ref_name in self._root_scope.external_references.keys():
+            if ref_name.split('.')[0] in APIAnalysisSpec.get_convertible_external_names():
+                is_torch = True
+                break
+        if not is_torch:
+            msg = "The source code does not import torch, model definition can not be found."
+            raise ScriptNotSupport(msg)
+
+        # Find out external reference in the code and save it.
+        external_refs = self._analyze_import_references(self._root_scope)
+        self._is_standard_external_ref = self._check_external_standard(external_refs)
+        self._check_external_standard(external_refs)
+        for external_name, external_ref_info in external_refs.items():
+            self._external_references.update({
+                external_name: {
+                    'external_ref_info': external_ref_info,
+                    'parent_node': None
+                }
+            })
+
+    @staticmethod
+    def _analyze_import_references(root_scope):
+        """Find out all references from the import statements."""
+        external_name_ref = {}
+        for node_references in root_scope.external_references.values():
+            for node_ref in node_references:
+                if node_ref.name_ref:
+                    # (from)import alias, node_ref.name_ref.id is alias name
+                    if node_ref.name_ref.definition.asname == node_ref.name_ref.id:
+                        external_name_ref[node_ref.name_ref.id] = node_ref
+                    # import without alias, node_ref.name_ref.definition.asname is None.
+                    # e.g., import a.b.c, reference maybe is a, a.b or a.b.c in the root_scope.external_references.
+                    # The reference a.b.c is really wanted.
+                    elif node_ref.name_ref.definition.name == node_ref.name_ref.id:
+                        external_name_ref[node_ref.name_ref.id] = node_ref
+                    else:
+                        pass
+
+        return external_name_ref
+
+    def visit(self, node):
+        """Overridden visit of the base class to maintain stack information to access parent node."""
+        self._stack.append(node)
+        super(CodeAnalyzer, self).visit(node)
+        self._stack.pop()
+
+    @staticmethod
+    def _get_full_name(node):
+        """Get the full name of the node."""
+        if not isinstance(node, (ast.Attribute, ast.Name)):
+            return None
+        return pasta.dump(node)
+
+    def _get_whole_name(self, node):
+        """
+        Get the whole name of the node.
+
+        For example, nn.Module is spliced two nodes, nn node and Module node.
+        When visit ast nodes,
+        Module node is first visited, the full name is the same as the whole name, that is nn.Module.
+        And then nn node is visited, the full name is nn, the whole name is nn.Module.
+        """
+        full_name = self._get_full_name(node)
+        if not full_name:
+            return None
+
+        # node is in stack top pos
+        if node is self._stack[-1]:
+            parent_index = -1
+            while isinstance(self._stack[parent_index], ast.Attribute):
+                parent_index -= 1
+
+            whole_name = self._get_full_name(self._stack[parent_index])
+        else:
+            whole_name = full_name
+        return whole_name
+
+    def _is_ref_convertible_imports(self, node):
+        """Check whether the node references convertible imports."""
+        check_result = False
+        whole_name = self._get_whole_name(node)
+        if whole_name:
+            module_name = whole_name.split('.')[0]
+            for ref_name, ref_info in self._external_references.items():
+                external_ref = ref_info['external_ref_info']
+                # external reference is convertible module
+                if external_ref.name in APIAnalysisSpec.get_convertible_external_names():
+                    # import from the same external module
+                    if module_name == ref_name.split('.')[0]:
+                        check_result = True
+                        break
+
+        return check_result
+
+    @staticmethod
+    def _get_external_node(external_references):
+        """Get all external reference nodes."""
+        external_nodes = {}
+        for ref_name, ref_info in external_references.items():
+            external_nodes.update({ref_info['external_ref_info'].node: ref_name})
+        return external_nodes
+
+    @staticmethod
+    def _get_convertible_external_node(external_name_ref):
+        """Get all convertible external reference nodes."""
+        convertible_external_nodes = {}
+        for ref_name, ref_info in external_name_ref.items():
+            if ref_info['external_ref_info'].name in APIAnalysisSpec.get_convertible_external_names():
+                convertible_external_nodes.update({ref_info['external_ref_info'].node: ref_name})
+        return convertible_external_nodes
+
+    def _update_external_ref_parent(self, node):
+        """Set external reference parent node info."""
+        external_nodes = self._get_external_node(self._external_references)
+        convertible_external_nodes = self._get_convertible_external_node(self._external_references)
+        for name_node in node.names:
+            if name_node in convertible_external_nodes.keys():
+                if len(node.names) > 1:
+                    msg = """\
+                    Not support multiple imports of torch on one line in your script. line:%s: %s
+                    """ % (node.lineno, pasta.dump(node))
+                    raise ScriptNotSupport(msg)
+            if name_node in external_nodes.keys():
+                ref_name = external_nodes[name_node]
+                self._external_references[ref_name]['parent_node'] = node
+
+    @staticmethod
+    def _get_class_scope(node_scope):
+        """Find the class scope of the node_scope."""
+        parent_scope = node_scope.parent_scope
+        class_scope = None
+        while parent_scope:
+            if isinstance(parent_scope.node, ast.ClassDef):
+                class_scope = parent_scope
+                break
+            parent_scope = parent_scope.parent_scope
+        return class_scope
+
+    def _update_convertible_functions(self, node):
+        """Update convertible functions."""
+        node_scope = self._root_scope.lookup_scope(node)
+        class_scope = self._get_class_scope(node_scope)
+        if class_scope:
+            network_classes = self._network_classes.get(class_scope, [])
+            if node_scope not in network_classes:
+                network_classes.append(node_scope)
+        else:
+            if node_scope not in self._network_functions:
+                self._network_functions.append(node_scope)
+
+    def visit_ClassDef(self, node):
+        """Callback function when visit AST tree"""
+        if not self._stack[-1] is node:
+            return
+
+        for base in node.bases:
+            if self._is_ref_convertible_imports(base):
+                self._network_classes[self._root_scope.lookup_scope(node)] = []
+
+        self.generic_visit(node)
+
+    def visit_Import(self, node):
+        """Callback function when visit AST tree"""
+        self._update_external_ref_parent(node)
+        self.generic_visit(node)
+
+    def visit_ImportFrom(self, node):
+        """Callback function when visit AST tree"""
+        self._update_external_ref_parent(node)
+        self.generic_visit(node)
+
+    def visit_Call(self, node):
+        """Callback function when visit AST tree"""
+        if not self._stack[-1] is node:
+            return
+        is_in_network_function = False
+        # If torch call is happened in the function, save the function for network definition.
+        if self._functions_stack and self._is_ref_convertible_imports(node.func):
+            self._update_convertible_functions(self._functions_stack[-1])
+            is_in_network_function = True
+        if not is_in_network_function:
+            self.generic_visit(node)
+
+    def visit_FunctionDef(self, node):
+        """Callback function when visit AST tree"""
+        if not self._stack[-1] is node:
+            return
+        if node.name == "forward":
+            self._update_convertible_functions(node)
+
+        self._functions_stack.append(node)
+        self.generic_visit(node)
+        self._functions_stack.pop()
+
+    def get_name(self, node):
+        """
+        Get the node name.
+
+        Args:
+            node (AST): The ast node of the source code.
+
+        Returns:
+            str, the name of the node
+        """
+        if isinstance(node, pasta.base.scope.Scope):
+            items = [self.get_name(node.node)]
+            parent_scope = node.parent_scope
+            while parent_scope:
+                if not isinstance(parent_scope.node, ast.Module):
+                    items.append(self.get_name(parent_scope.node))
+                parent_scope = parent_scope.parent_scope
+            return '.'.join(reversed(items))
+        if isinstance(node, (ast.ClassDef, ast.FunctionDef)):
+            return node.name
+        if isinstance(node, (ast.Name, ast.Attribute)):
+            return self._get_full_name(node)
+        return str(node)
+
+    def lookup_scope(self, node):
+        """
+        Search the scope of the node.
+
+        Args:
+            node (AST): The ast node of the source code.
+
+        Returns:
+            scope, the scope of the node
+        """
+        if isinstance(node, pasta.base.scope.Scope):
+            return node
+        return self._root_scope.lookup_scope(node)

mindinsight/mindconverter/common/exceptions.py

@@ -0,0 +1,44 @@
+# Copyright 2019 Huawei Technologies Co., Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============================================================================
+"""Define custom exception."""
+from enum import unique
+
+from mindinsight.utils.constant import ScriptConverterErrors
+from mindinsight.utils.exceptions import MindInsightException
+
+
+@unique
+class ConverterErrors(ScriptConverterErrors):
+    """Converter error codes."""
+    SCRIPT_NOT_SUPPORT = 1
+    NODE_TYPE_NOT_SUPPORT = 2
+
+
+class ScriptNotSupport(MindInsightException):
+    """The script can not support to process."""
+
+    def __init__(self, msg):
+        super(ScriptNotSupport, self).__init__(ConverterErrors.SCRIPT_NOT_SUPPORT,
+                                               msg,
+                                               http_code=400)
+
+
+class NodeTypeNotSupport(MindInsightException):
+    """The astNode can not support to process."""
+
+    def __init__(self, msg):
+        super(NodeTypeNotSupport, self).__init__(ConverterErrors.NODE_TYPE_NOT_SUPPORT,
+                                                 msg,
+                                                 http_code=400)

mindinsight/mindconverter/converter.py

@@ -13,463 +13,88 @@
 # limitations under the License.
 # ============================================================================
 """converter module"""
-import copy
-import importlib
-import inspect
 import os
 import stat
 
-from mindinsight.mindconverter.config import ALL_MAPPING
-from mindinsight.mindconverter.config import NN_LIST
-from mindinsight.mindconverter.config import ALL_TORCH_APIS
-from mindinsight.mindconverter.config import ALL_2P_LIST
-from mindinsight.mindconverter.config import UNSUPPORTED_WARN_INFOS
-from mindinsight.mindconverter.config import ALL_UNSUPPORTED
-from mindinsight.mindconverter.common.log import logger
-from mindinsight.mindconverter.forward_call import ForwardCall
+import pasta
 
-LINE_NO_INDEX_DIFF = 1
+from mindinsight.mindconverter.common.exceptions import ScriptNotSupport
+from mindinsight.mindconverter.common.log import logger
+from mindinsight.mindconverter.ast_edits import AstEditVisitor
 
 
 class Converter:
     """Convert class"""
 
-    convert_info = ''
     flags = os.O_WRONLY | os.O_CREAT | os.O_EXCL
     modes = stat.S_IWUSR | stat.S_IRUSR
 
-    @staticmethod
-    def is_local_defined(obj, member):
-        """
-        Check if obj and member are both defined in the same source file.
-
-        Args:
-            obj (Union[object, module]): A module or a class.
-            member (func): A function of obj.
-
-        Returns:
-            bool, True or False.
-        """
-        srcfile = inspect.getsourcefile(obj)
-        return inspect.getsourcefile(member) == srcfile
+    def __init__(self):
+        self._tree = None
+        self._infile = None
+        self._code_analyzer = None
+        self._ast_editor = None
+        self._report = []
 
-    @classmethod
-    def is_valid_module(cls, obj, member):
-        """
-        Check if obj and member defined in same source file and member is inherited from torch.nn.Module.
-
-        Args:
-            obj (Union[object, module]): A module or a class.
-            member (func): A function.
-
-        Returns:
-            bool, True or False.
-        """
-        if inspect.isclass(member):
-            is_subclass = member.__base__.__name__ in ['Module',
-                                                       'Sequential',
-                                                       'ModuleList',
-                                                       'ModuleDict',
-                                                       'ParameterList',
-                                                       'ParameterDict']
-            return is_subclass and cls.is_local_defined(obj, member)
-        return False
-
-    @classmethod
-    def is_valid_function(cls, obj, member):
-        """
-        Check if member is function and defined in the file same as obj.
-
-        Args:
-            obj (Union[object, module]: The obj.
-            member (func): The func.
-
-        Returns:
-            bool, True or False.
-        """
-        return inspect.isfunction(member) and cls.is_local_defined(obj, member)
-
-    @staticmethod
-    def find_left_parentheses(string, right):
-        """
-        Find index of the first left parenthesis.
-
-        Args:
-            string (str): A line of code.
-            right (int): The right index for string to find from.
-
-        Returns:
-            int, index of the first parenthesis.
-
-        Raises:
-            ValueError: If line of code doesn't contain any pair of `()` or `(` and `)` are not paired.
-        """
-        if string[right] != ')':
-            raise ValueError('code [{}] at index {} not ")".'.format(string, right))
-        stack = []
-        for i in range(right, -1, -1):
-            if string[i] == ')':
-                stack.append(')')
-            elif string[i] == '(':
-                stack.pop()
-                if not stack:
-                    return i
-        raise ValueError("{} should contain ()".format(string))
-
-    @staticmethod
-    def find_right_parentheses(string, left):
+    def convert(self, infile, output_dir, report_dir):
         """
-        Find first index of right parenthesis which make all left parenthesis make sense.
+        Convert a module's code, code converted will be save in output_dir, and a report will be save in report_dir.
 
         Args:
-            string (str): A line of code.
-            left (int): Start index of string to find from.
-
-        Returns:
-            int, index of the found right parenthesis.
-
-        Raises:
-            ValueError: If line of code doesn't contain any pair of `()` or `(` and `)` are not paired.
+            infile (str): The script to convert.
+            output_dir (str): The path to save converted file.
+            report_dir (str): The path to save report file.
         """
-        stack = []
-        for i in range(left, len(string)):
-            if string[i] == '(':
-                stack.append('(')
-            elif string[i] == ')':
-                stack.pop()
-                if not stack:
-                    return i
-        raise ValueError("{} should contain ()".format(string))
+        in_file_split = _path_split(infile)
+        in_file_split[-1], _ = _get_name_ext(in_file_split[-1])
+        module_name = '.'.join(in_file_split)
+        with open(infile, 'r') as file:
+            content = ''.join(file.readlines())
+
+        self._infile = infile
+        self._tree = pasta.parse(content)
+        self._report.clear()
+        try:
+            logger.info("Script file is %s", infile)
+            logger.info("Start converting %s", module_name)
+            self._report.append('[Start Convert]')
+            self._ast_editor = AstEditVisitor()
+            self._ast_editor.process(self._tree)
+            self._report.extend(self._ast_editor.get_logs())
+            self._report.append('[Convert Over]')
+            dest_file = os.path.join(output_dir, os.path.basename(infile))
+            with os.fdopen(os.open(dest_file, self.flags, self.modes), 'w') as file:
+                file.write(pasta.dump(self._tree))
+            logger.info("Convert success. Result is wrote to %s.", dest_file)
+        except ScriptNotSupport as error:
+            self._report.append('[ScriptNotSupport] ' + error.message)
+            self._report.append('[Convert failed]')
+            raise error
+        except Exception as error:
+            self._report.clear()
+            raise error
+        finally:
+            if self._report:
+                dest_report_file = os.path.join(report_dir,
+                                                '_'.join(os.path.basename(infile).split('.')[:-1]) + '_report.txt')
+                with os.fdopen(os.open(dest_report_file, self.flags, self.modes), 'a') as file:
+                    file.write('\n'.join(self._report))
+                logger.info("Convert report is saved in %s", dest_report_file)
 
     @staticmethod
-    def get_call_name(code, end):
+    def convert_api(source_code):
         """
-        Traverse code in a reversed function from index end and get the call name and start index of the call name,
-        if call name not found, return a null character string and -1
+        Convert api_name in code to MindSpore api, if api_name is a python api, code will not convert.
 
         Args:
-            code (str): The str of code to find from.
-            end (int): Start index to find.
-
-        Returns:
-            tuple(str, int), one is founded api name if found, else a null character string, the other is start index
-            of founded api name, -1 if api name not found
-        """
-        stack = []
-        for i in range(end - 1, -1, -1):
-            if code[i] in ["(", "[", "{"]:
-                if stack:
-                    stack.pop()
-                else:
-                    return code[i + 1:end], i + 1
-            elif code[i] in [")", "]", "}"]:
-                stack.append(code[i])
-            elif stack:
-                continue
-            elif not (code[i].isalpha() or code[i].isdigit() or code[i] == '_' or code[i] == '.'):
-                return code[i + 1:end], i + 1
-        return "", -1
-
-    def convert_api(self, code, start, api_name=""):
-        """
-        Convert api_name in code to MindSpore api with start as a start index, if api_name is a python api,
-        code will not convert.
-
-        Args:
-            code (str): The str code to convert.
-            start (int): The index of code to start convert from.
-            api_name (str): The api name to convert.
-
+            source_code (ast.Call): The ast node to convert.
         Returns:
             str, the converted code.
-            int, index of converted api_name in code.
-        """
-        # handle format like .shape(
-        if api_name.startswith('.'):
-            call_name, new_start = self.get_call_name(code, start)
-            if start == -1 or call_name == "self":
-                return code, start + 1
-        else:
-            call_name = api_name
-            new_start = start
-
-        # find full api expected to be converted. eg:expr="nn.Conv2d(1,2,3)" args_str="(1,2,3)"
-        left = code.find("(", start)
-        if left == -1:
-            raise ValueError('"(" not found, {} should work with "("'.format(call_name))
-        right = self.find_right_parentheses(code, left)
-        end = right
-
-        expr = code[start:end + 1]
-        args_str = code[left:right + 1]
-
-        map_helper = ALL_MAPPING[api_name]
-        new_expr = map_helper.convert(call_name, args_str)
-        next_newline = code.find("\n", end + 1)
-        fill_num = (expr.count("\n") - new_expr.count("\n"))
-        if next_newline != -1:
-            code = code[:new_start] + new_expr + code[end + 1:next_newline] + ("\n" * fill_num) + code[next_newline:]
-        else:
-            code = code[:new_start] + new_expr + ")" + ("\n" * fill_num) + code[end + 2:]
-
-        return code, start + len(map_helper.ms_api.name)
-
-    @staticmethod
-    def find_api(code, i, is_forward):
-        """
-        Find api name from code with a start index i, check api name ok with a is_forward condition.
-
-        Args:
-            code (str): The code from which to find api name.
-            i (int): The start index to find.
-            is_forward (bool): Check if the found api name ok.
-
-        Returns:
-            str, api name if find api name and check ok with is_forward condition, else a null character string.
-        """
-        if code[i:].startswith("nn.") \
-                or code[i:].startswith("F.") \
-                or code[i:].startswith("torch.") \
-                or code[i:].startswith('.'):
-            j = code.find('(', i)
-            if j != -1 and code[i:j] in ALL_TORCH_APIS:
-                api_name = code[i:j]
-                if (not is_forward and api_name in NN_LIST) or (is_forward and api_name in ALL_2P_LIST):
-                    return api_name
-        return ""
-
-    def convert_function(self, fun_name, fun, is_forward):
-        """
-        Convert a PyTorch function into MindSpore function.
-
-        Args:
-            fun_name (str): The str of function name.
-            fun (func): The function to convert.
-            is_forward (bool): If the function is defined in forward function in nn.Module in torch.
-
-        Returns:
-            dict, old code and converted code map if convert happens, else {}.
         """
-        _, line_no = inspect.getsourcelines(fun)
-        logger.info("Line %3d: start converting function %s()", line_no, fun_name)
-
-        code = inspect.getsource(fun)
-        code_saved = copy.copy(code)
-
-        i = 0
-        while i < len(code):
-            api_name = self.find_api(code, i, is_forward)
-            if api_name:
-                line_no1 = line_no + code[:i].count('\n')
-                if api_name in ALL_MAPPING:
-                    logger.info("Line %3d start converting API: %s", line_no1, api_name)
-                    code, i = self.convert_api(code, i, api_name)
-                    self.convert_info += "[Convert][Line{:3d}] {} is converted.\n".format(line_no1, api_name)
-                    continue
-                if api_name in ALL_UNSUPPORTED:
-                    warn_info = ". " + UNSUPPORTED_WARN_INFOS[api_name] if api_name in UNSUPPORTED_WARN_INFOS else ""
-                    logger.warning("Line %3d: found unsupported API: %s%s", line_no1, api_name, warn_info)
-                    self.convert_info += "[Unconvert][Line{:3d}] {} didn't convert{}\n".format(line_no1,
-                                                                                               api_name, warn_info)
-            i += 1
-        return {code_saved: code} if code_saved != code else {}
-
-    @staticmethod
-    def judge_forward(name, forward_list):
-        """
-        Check if function is a forward function.
-
-        Args:
-            name (str): The function name.
-            forward_list (set): A set of forward function.
-
-        Returns:
-            bool, True or False
-        """
-        is_forward = name in forward_list or name.split(".")[-1] == "forward"
-        if is_forward:
-            logger.debug("%s is a forward function", name)
-        return is_forward
-
-    def convert_module(self, module_name, module, forward_list):
-        """
-        Convert a PyTorch module code into MindSpore module code.
-
-        Args:
-            module_name (str): The module's name.
-            module (module): The module to convert.
-            forward_list (set): A set of forward function.
-
-        Returns:
-            dict, map of old code and converted code.
-        """
-        _, line_no = inspect.getsourcelines(module)
-        logger.info("Line {:3d}: start converting nn.Module {}".format(line_no, module_name))
-
-        mapped = {}
-        for name, member in inspect.getmembers(module):
-            if self.is_valid_function(module, member):
-                is_forward = self.judge_forward("{}.{}".format(module_name, name), forward_list)
-                mapped.update(self.convert_function(name, member, is_forward))
-        return mapped
-
-    def get_mapping(self, import_mod, forward_list):
-        """
-        Convert code of a module and get mapping of old code and convert code.
-
-        Args:
-            import_mod (module): The module to convert.
-            forward_list (set): A set of forward function.
-
-        Returns:
-            dict, mapping for old code and converted code of the module
-        """
-        mapping = {}
-        tasks = []
-        for name, member in inspect.getmembers(import_mod):
-            if self.is_valid_module(import_mod, member):
-                _, line_no = inspect.getsourcelines(member)
-                tasks.append((line_no, self.convert_module, (name, member, forward_list)))
-            elif self.is_valid_function(import_mod, member):
-                _, line_no = inspect.getsourcelines(member)
-                is_forward = self.judge_forward("{}.{}".format(import_mod, name), forward_list)
-                tasks.append((line_no, self.convert_function, (name, member, is_forward)))
-        tasks.sort()
-        for _, convert_fun, args in tasks:
-            mapping.update(convert_fun(*args))
-        return mapping
-
-    @staticmethod
-    def get_code_start_line_num(source_lines):
-        """
-        Get the start code line number exclude comments.
-
-        Args:
-            source_lines (list[str]): Split results of original code.
-
-        Returns:
-            int, the start line number.
-        """
-        stack = []
-        index = 0
-        for i, line in enumerate(source_lines):
-            if line.strip().startswith('#'):
-                continue
-            if line.strip().startswith('"""'):
-                if not line.endswith('"""\n'):
-                    stack.append('"""')
-                continue
-            if line.strip().startswith("'''"):
-                if not line.endswith("'''\n"):
-                    stack.append("'''")
-                continue
-            if line.endswith('"""\n') or line.endswith("'''\n"):
-                stack.pop()
-                continue
-            if line.strip() != '' and not stack:
-                index = i
-                break
-        return index
-
-    def update_code_and_convert_info(self, code, mapping):
-        """
-        Replace code according to mapping, and update convert info.
-
-        Args:
-            code (str): The code to replace.
-            mapping (dict): Mapping for original code and the replaced code.
-
-        Returns:
-            str, the replaced code.
-        """
-
-        for key, value in mapping.items():
-            code = code.replace(key, value)
-
-        source_lines = code.splitlines(keepends=True)
-        start_line_number = self.get_code_start_line_num(source_lines)
-        add_import_infos = ['import mindspore\n',
-                            'import mindspore.nn as nn\n',
-                            'import mindspore.ops.operations as P\n']
-        for i, add_import_info in enumerate(add_import_infos):
-            source_lines.insert(start_line_number + i, add_import_info)
-            self.convert_info += '[Add Import] {}.\n'.format(add_import_info.strip())
-
-        insert_count = len(add_import_infos)
-        line_diff = insert_count - LINE_NO_INDEX_DIFF
-
-        for i in range(start_line_number + insert_count, len(source_lines)):
-            line = source_lines[i]
-
-            if (line.startswith('from torch') and 'import' in line) or line.startswith('import torch'):
-                new_line = '# ' + line
-                source_lines[i] = new_line
-                self.convert_info += '[Annotate][Line{:3d}] {} is annotated.\n'.format(i - line_diff, line.strip())
-            if line.strip().startswith('class') and '(nn.Module)' in line:
-                new_line = line.replace('nn.Module', 'nn.Cell')
-                source_lines[i] = new_line
-                self.convert_info += '[Convert][Line{:3d}] nn.Module is converted.\n'.format(i - line_diff)
-            if line.strip().startswith('def forward('):
-                new_line = line.replace('forward', 'construct')
-                source_lines[i] = new_line
-                self.convert_info += '[Convert][Line{:3d}] forward is converted.\n'.format(i - line_diff)
-            if 'nn.Linear' in line:
-                new_line = line.replace('nn.Linear', 'nn.Dense')
-                source_lines[i] = new_line
-                self.convert_info += '[Convert][Line{:3d}] nn.Linear is converted.\n'.format(i - line_diff)
-            if '(nn.Sequential)' in line:
-                new_line = line.replace('nn.Sequential', 'nn.SequentialCell')
-                source_lines[i] = new_line
-                self.convert_info += '[Convert][Line{:3d}] nn.Sequential is converted.\n'.format(i - line_diff)
-            if 'nn.init.' in line:
-                new_line = line.replace('nn.init', 'pass  # nn.init')
-                source_lines[i] = new_line
-                self.convert_info += '[Annotate][Line{:3d}] {} is annotated.\n'.format(i - line_diff, 'nn.init')
-
-        code = ''.join(source_lines)
-        return code
-
-    def convert(self, import_name, output_dir, report_dir):
-        """
-        Convert a module's code, code converted will be save in output_dir, and a report will be save in report_dir.
-
-        Args:
-            import_name (str): The module from which to import the module to convert.
-            output_dir (str): The path to save converted file.
-            report_dir (str): The path to save report file.
-        """
-        logger.info("Start converting %s", import_name)
-        start_info = '[Start Convert]\n'
-        module_info = 'The module is {}.\n'.format(import_name)
-
-        import_mod = importlib.import_module(import_name)
-        srcfile = inspect.getsourcefile(import_mod)
-        logger.info("Script file is %s", srcfile)
-
-        forward_list = set(ForwardCall(srcfile).calls)
-        logger.debug("Forward_list: %s", forward_list)
-
-        # replace python function under nn.Module
-        mapping = self.get_mapping(import_mod, forward_list)
-        code = inspect.getsource(import_mod)
-        code = self.update_code_and_convert_info(code, mapping)
-        convert_info_split = self.convert_info.splitlines(keepends=True)
-        convert_info_split = sorted(convert_info_split)
-        convert_info_split.insert(0, start_info)
-        convert_info_split.insert(1, module_info)
-        convert_info_split.append('[Convert Over]')
-        self.convert_info = ''.join(convert_info_split)
-
-        dest_file = os.path.join(output_dir, os.path.basename(srcfile))
-        with os.fdopen(os.open(dest_file, self.flags, self.modes), 'w') as file:
-            file.write(code)
-        logger.info("Convert success. Result is wrote to %s.", dest_file)
-
-        dest_report_file = os.path.join(report_dir,
-                                        '_'.join(os.path.basename(srcfile).split('.')[:-1]) + '_report.txt')
-        with os.fdopen(os.open(dest_report_file, self.flags, self.modes), 'a') as file:
-            file.write(self.convert_info)
-        logger.info("Convert report is saved in %s", dest_report_file)
+        ast_node = pasta.parse(source_code).body[0].value
+        check_context = False
+        replaced_code = AstEditVisitor().mapping_api(ast_node, check_context)
+        return replaced_code
 
 
 def _get_name_ext(file):
@@ -514,14 +139,6 @@ def main(files_config):
         files_config (dict): The config of files which to convert.
     """
     convert_ins = Converter()
-    root_path = files_config['root_path']
     in_files = files_config['in_files']
     for in_file in in_files:
-        in_file_split = _path_split(in_file[len(root_path):])
-        in_file_split[-1], _ = _get_name_ext(in_file_split[-1])
-        module_name = '.'.join(in_file_split)
-        convert_ins.convert(module_name, files_config['outfile_dir'], files_config['report_dir'])
-
-    in_module = files_config.get('in_module')
-    if in_module:
-        convert_ins.convert(in_module, files_config['outfile_dir'], files_config['report_dir'])
+        convert_ins.convert(in_file, files_config['outfile_dir'], files_config['report_dir'])

mindinsight/mindconverter/forward_call.py

@@ -14,7 +14,8 @@
 # ============================================================================
 """Find out forward functions of script file"""
 import ast
-import os
+
+import pasta
 
 
 class ForwardCall(ast.NodeVisitor):
@@ -24,73 +25,80 @@ class ForwardCall(ast.NodeVisitor):
     Find the sub functions called by the forward function in the script file.
     """
 
-    def __init__(self, filename):
-        self.filename = filename
-        self.module_name = os.path.basename(filename).replace('.py', '')
-        self.name_stack = []
-        self.forward_stack = []
-        self.calls = set()
+    def __init__(self, ast_tree):
+        self._tree = ast_tree
+        self._name_stack = []
+        self._forward_stack = []
+        self.calls = {}  # key is function name, value is forward function ast node.
+        self._function_list = {}  # key is function name, value is function ast node.
         self.process()
 
     def process(self):
-        """Parse the python source file to find the forward functions."""
-        with open(self.filename, 'rt', encoding='utf-8') as file:
-            content = file.read()
-        self.visit(ast.parse(content, self.filename))
+        """visit ast tree to find the forward functions."""
+        self.visit(self._tree)
+        # first visit to find out all functions, so restores all variables except _function_list
+        self._name_stack.clear()
+        self._forward_stack.clear()
+        self.calls.clear()
+        self.visit(self._tree)
 
     def get_current_namespace(self):
         """Get the namespace when visit the AST node"""
-        namespace = '.'.join(self.name_stack)
+        namespace = '.'.join(self._name_stack)
         return namespace
 
     @classmethod
-    def get_ast_node_name(cls, node):
-        """Get AST node name."""
-        if isinstance(node, ast.Attribute):
-            return f'{cls.get_ast_node_name(node.value)}.{node.attr}'
-
-        if isinstance(node, ast.Name):
-            return node.id
+    def get_call_name(cls, node):
+        """Get functional call name."""
+        if not isinstance(node, ast.Call):
+            return None
 
-        return node
+        return pasta.dump(node.func)
 
     def visit_ClassDef(self, node):
         """Callback function when visit AST tree"""
-        self.name_stack.append(node.name)
+        self._name_stack.append(node.name)
         self.generic_visit(node)
-        self.name_stack.pop()
+        self._name_stack.pop()
 
     def visit_FunctionDef(self, node):
         """Callback function when visit AST tree"""
+        namespace = self.get_current_namespace()
+        if namespace:
+            func_name = f'{namespace}.{node.name}'
+        else:
+            func_name = node.name
         func_name = f'{self.get_current_namespace()}.{node.name}'
         is_in_chain = func_name in self.calls or node.name == 'forward'
         if is_in_chain:
-            self.forward_stack.append(func_name)
+            self._forward_stack.append(func_name)
 
         if node.name == 'forward':
-            self.calls.add(func_name)
+            self.calls.update({func_name: node})
 
+        self._function_list.update({func_name: node})
         self.generic_visit(node)
 
         if is_in_chain:
-            self.forward_stack.pop()
+            self._forward_stack.pop()
 
     def visit_Call(self, node):
         """Callback function when visit AST tree"""
         for arg in node.args:
             self.visit(arg)
-        for kw in node.keywords:
-            self.visit(kw.value)
-        func_name = self.get_ast_node_name(node.func)
+        for keyword in node.keywords:
+            self.visit(keyword.value)
+        func_name = self.get_call_name(node)
         if isinstance(node.func, ast.Name):
             if func_name not in ['super', 'str', 'repr']:
-                if self.forward_stack:
-                    self.calls.add(func_name)
+                if self._forward_stack:
+                    self.calls.update({func_name: self._function_list.get(func_name)})
                 self.visit(node.func)
         else:
-            if self.forward_stack:
-                if 'self' in func_name:
-                    self.calls.add(f'{self.get_current_namespace()}.{func_name.split(".")[-1]}')
+            if self._forward_stack:
+                if func_name.startswith('self.'):
+                    whole_name = f'{self.get_current_namespace()}.{func_name.split(".")[-1]}'
+                    self.calls.update({whole_name: self._function_list.get(whole_name)})
                 else:
-                    self.calls.add(func_name)
+                    self.calls.update({func_name: self._function_list.get(func_name)})
                 self.visit(node.func)

mindinsight/utils/constant.py

@@ -30,6 +30,7 @@ class MindInsightModules(Enum):
     LINEAGEMGR = 2
     DATAVISUAL = 5
     PROFILERMGR = 6
+    SCRIPTCONVERTER = 7
 
 
 class GeneralErrors(Enum):
@@ -69,3 +70,7 @@ class DataVisualErrors(Enum):
     SCALAR_NOT_EXIST = 14
     HISTOGRAM_NOT_EXIST = 15
     TRAIN_JOB_DETAIL_NOT_IN_CACHE = 16
+
+
+class ScriptConverterErrors(Enum):
+    """Enum definition for mindconverter errors."""

tests/ut/mindconverter/test_converter.py

@@ -22,380 +22,201 @@ class TestConverter:
 
     converter_ins = Converter()
 
-    def test_judge_forward(self):
-        """test judge_forward"""
-        name1 = 'conv1'
-        forward_list = {'conv1', 'relu'}
-        result1 = self.converter_ins.judge_forward(name1, forward_list)
-        assert result1 is True
-
-        name2 = 'self.forward'
-        result2 = self.converter_ins.judge_forward(name2, forward_list)
-        assert result2 is True
-
-    def test_find_left_parentheses(self):
-        """test find_left_parentheses"""
-        code = '''nn.Sequential(nn.Conv2d(in_dim, 6, 5, stride=1, padding=0, ),
-                                                  nn.ReLU(),
-                                                  nn.ReLU(True),
-                                                  nn.MaxPool2d(2, 2),
-                                                  nn.Conv2d(6, 16, 5, stride=1, padding=0),
-                                                  nn.ReLU(inplace=False),
-                                                  nn.MaxPool2d(2, 2))'''
-        right_index = len(code) - 1
-        left_index = code.index('nn.Conv2d')
-        result = self.converter_ins.find_left_parentheses(code, right_index)
-        assert result == left_index - 1
-
-    def test_find_api(self):
-        """test find_api"""
-        code = '''nn.Sequential(nn.Conv2d(in_dim, 6, 5, stride=1, padding=0, ),
-                                  nn.ReLU(),
-                                  nn.ReLU(True),
-                                  nn.MaxPool2d(2, 2),  # TODO padding
-                                  nn.Conv2d(6, 16, 5, stride=1, padding=0),
-                                  nn.ReLU(inplace=False),
-                                  nn.MaxPool2d(2, 2))'''
-        index = 0
-        is_forward = False
-        result = self.converter_ins.find_api(code, index, is_forward)
-        assert result == 'nn.Sequential'
-
-    def test_get_call_name(self):
-        """test get_call_name"""
-        code = '''nn.Sequential(nn.Conv2d(in_dim, 6, 5, stride=1, padding=0))'''
-        end = len(code)
-        call_name, index = self.converter_ins.get_call_name(code, end)
-
-        assert call_name == ''
-        assert index == -1
-
-    def test_find_right_parentheses(self):
-        """test find_right_parentheses"""
-        code = '''nn.Sequential(nn.Conv2d(in_dim, 6, 5, stride=1, padding=0, ),
-                                          nn.ReLU(),
-                                          nn.ReLU(True),
-                                          nn.MaxPool2d(2, 2),  # TODO padding
-                                          nn.Conv2d(6, 16, 5, stride=1, padding=0),
-                                          nn.ReLU(inplace=False),
-                                          nn.MaxPool2d(2, 2))'''
-        left_index = 0
-        result = self.converter_ins.find_right_parentheses(code, left_index)
-        assert_index = len(code) - 1
-        assert result == assert_index
-
     # test convert_api with nn ops
     def test_convert_api_nn_layernorm(self):
         """Test convert_api function work ok when convert api nn.LayerNorm"""
-        code = """
-        def __init__(self, num_classes=1000):
-            self.features = nn.SequentialCell([
-            nn.LayerNorm((5, 10, 10), elementwise_affine=False),
-            nn.ReLU(inplace=False)
-            ])
-        """
+        code = "nn.LayerNorm((5, 10, 10), elementwise_affine=False)"
         api_name = 'nn.LayerNorm'
-        start = code.find(api_name)
 
         layer_norm_info = NN_MAPPING.get(api_name)
         expected_ms_api_name = 'nn.LayerNorm'
 
         epsilon = layer_norm_info.pt_api.params.get('eps')
 
-        replaced_code, new_start = self.converter_ins.convert_api(code, start, api_name)
+        replaced_code = self.converter_ins.convert_api(code)
         assert replaced_code == code.replace('nn.LayerNorm((5, 10, 10), elementwise_affine=False)',
                                              '{}(normalized_shape=(5, 10, 10), epsilon={})'.format(
                                                  expected_ms_api_name, epsilon))
-        assert new_start == start + len(expected_ms_api_name)
 
     def test_convert_api_nn_leaky_relu(self):
         """Test convert_api function work ok when convert api nn.LeakyReLU"""
-        code = """
-        def __init__(self, num_classes=1000):
-            self.features = nn.SequentialCell([
-            nn.LayerNorm((5, 10, 10), elementwise_affine=False),
-            nn.LeakyReLU(0.3)])
-        """
-        api_name = 'nn.LeakyReLU'
-        start = code.find(api_name)
+        code = "nn.LeakyReLU(0.3)"
         expected_ms_api_name = 'nn.LeakyReLU'
 
-        replaced_code, new_start = self.converter_ins.convert_api(code, start, api_name)
+        replaced_code = self.converter_ins.convert_api(code)
         assert replaced_code == code.replace('nn.LeakyReLU(0.3)',
                                              '{}(alpha=0.3)'.format(expected_ms_api_name))
-        assert new_start == start + len(expected_ms_api_name)
 
     def test_convert_api_nn_prelu(self):
         """Test convert_api function work ok when convert api nn.PReLU"""
-        code = """
-        input = torch.randn(2, 3, 5)
-        nn.PReLU()(input)
-        
-        """
-        api_name = 'nn.PReLU'
-        start = code.find(api_name)
+        code = "nn.PReLU()(input)"
         expected_ms_api_name = 'nn.PReLU'
-        replaced_code, new_start = self.converter_ins.convert_api(code, start, api_name)
+        replaced_code = self.converter_ins.convert_api(code)
         assert replaced_code == code.replace('nn.PReLU()(input)',
                                              '{}()(input)'.format(expected_ms_api_name))
-        assert new_start == start + len(expected_ms_api_name)
 
     def test_convert_api_nn_softmax(self):
         """Test convert_api function work ok when convert api nn.Softmax"""
-        code = """
-        nn.Softmax(dim=1)(input)
-        """
-        api_name = 'nn.Softmax'
+        code = "nn.Softmax(dim=1)"
         expected_ms_api_name = 'nn.Softmax'
-        start = code.find(api_name)
 
-        replaced_code, new_start = self.converter_ins.convert_api(code, start, api_name)
-        assert replaced_code == code.replace('nn.Softmax(dim=1)(input)',
-                                             '{}(axis=1)(input)'.format(expected_ms_api_name))
-        assert new_start == start + len(expected_ms_api_name)
+        replaced_code = self.converter_ins.convert_api(code)
+        assert replaced_code == code.replace('nn.Softmax(dim=1)',
+                                             '{}(axis=1)'.format(expected_ms_api_name))
 
     # test convert_api with torch dot ops
     def test_convert_api_torch_dot_abs(self):
         """Test convert_api function work ok when convert api torch.abs"""
-        code = """
-        torch.abs(input)
-        """
-        api_name = 'torch.abs'
-        start = code.find(api_name)
+        code = "torch.abs(input)"
         expected_ms_api_name = 'P.Abs'
 
-        replaced_code, new_start = self.converter_ins.convert_api(code, start, api_name)
+        replaced_code = self.converter_ins.convert_api(code)
         assert replaced_code == code.replace('torch.abs(input)',
                                              '{}()(input)'.format(expected_ms_api_name))
-        assert new_start == start + len(expected_ms_api_name)
 
     def test_convert_api_torch_dot_acos(self):
         """Test convert_api function work ok when convert api torch.acos"""
-        code = """
-        torch.acos(input)
-        """
-        api_name = 'torch.acos'
-        start = code.find(api_name)
+        code = "torch.acos(input)"
         expected_ms_api_name = 'P.ACos'
 
-        replaced_code, new_start = self.converter_ins.convert_api(code, start, api_name)
+        replaced_code = self.converter_ins.convert_api(code)
         assert replaced_code == code.replace('torch.acos(input)',
                                              '{}()(input)'.format(expected_ms_api_name))
-        assert new_start == start + len(expected_ms_api_name)
 
     def test_convert_api_torch_dot_cos(self):
         """Test convert_api function work ok when convert api torch.cos"""
-        code = """
-        torch.cos(input)
-        """
-        api_name = 'torch.cos'
+        code = "torch.cos(input)"
         expected_ms_api_name = 'P.Cos'
-        start = code.find(api_name)
 
-        replaced_code, new_start = self.converter_ins.convert_api(code, start, api_name)
+        replaced_code = self.converter_ins.convert_api(code)
         assert replaced_code == code.replace('torch.cos(input)',
                                              '{}()(input)'.format(expected_ms_api_name))
-        assert new_start == start + len(expected_ms_api_name)
 
     def test_convert_api_torch_dot_exp(self):
         """Test convert_api function work ok when convert api torch.exp"""
-        code = """
-        torch.exp(input)
-        """
-        api_name = 'torch.exp'
+        code = "torch.exp(input)"
         expected_ms_api_name = 'P.Exp'
-        start = code.find(api_name)
 
-        replaced_code, new_start = self.converter_ins.convert_api(code, start, api_name)
+        replaced_code = self.converter_ins.convert_api(code)
         assert replaced_code == code.replace('torch.exp(input)',
                                              '{}()(input)'.format(expected_ms_api_name))
-        assert new_start == start + len(expected_ms_api_name)
 
     def test_convert_api_torch_dot_log(self):
         """Test convert_api function work ok when convert api torch.log"""
-        code = """
-        torch.log(input)
-        """
-        api_name = 'torch.log'
+        code = "torch.log(input)"
         expected_ms_api_name = 'P.Log'
-        start = code.find(api_name)
 
-        replaced_code, new_start = self.converter_ins.convert_api(code, start, api_name)
+        replaced_code = self.converter_ins.convert_api(code)
         assert replaced_code == code.replace('torch.log(input)',
                                              '{}()(input)'.format(expected_ms_api_name))
-        assert new_start == start + len(expected_ms_api_name)
 
     def test_convert_api_torch_dot_pow(self):
         """Test convert_api function work ok when convert api torch.pow"""
-        code = """
-        torch.pow(a, exp)
-        """
-        api_name = 'torch.pow'
+        code = "torch.pow(a, exp)"
         expected_ms_api_name = 'P.Pow'
-        start = code.find(api_name)
 
-        replaced_code, new_start = self.converter_ins.convert_api(code, start, api_name)
+        replaced_code = self.converter_ins.convert_api(code)
         assert replaced_code == code.replace('torch.pow(a, exp)',
                                              '{}()(a, exp)'.format(expected_ms_api_name))
-        assert new_start == start + len(expected_ms_api_name)
 
     def test_convert_api_torch_dot_div(self):
         """Test convert_api function work ok when convert api torch.div"""
-        code = """
-        input = torch.randn(5)
-        other = torch.randn(5)
-        torch.div(input, other)
-        """
-        api_name = 'torch.div'
+        code = "torch.div(input, other)"
         expected_ms_api_name = 'P.Div'
-        start = code.find(api_name)
 
-        replaced_code, new_start = self.converter_ins.convert_api(code, start, api_name)
+        replaced_code = self.converter_ins.convert_api(code)
 
         assert replaced_code == code.replace('torch.div(input, other)',
                                              '{}()(input, other)'.format(expected_ms_api_name))
-        assert new_start == start + len(expected_ms_api_name)
 
     def test_convert_api_torch_dot_sin(self):
         """Test convert_api function work ok when convert api torch.sin"""
-        code = """
-        torch.sin(input)
-        """
-        api_name = 'torch.sin'
+        code = "torch.sin(input)"
         expected_ms_api_name = 'P.Sin'
-        start = code.find(api_name)
 
-        replaced_code, new_start = self.converter_ins.convert_api(code, start, api_name)
+        replaced_code = self.converter_ins.convert_api(code)
         assert replaced_code == code.replace('torch.sin(input)',
                                              '{}()(input)'.format(expected_ms_api_name))
-        assert new_start == start + len(expected_ms_api_name)
 
     def test_convert_api_torch_dot_sqrt(self):
         """Test convert_api function work ok when convert api torch.sqrt"""
-        code = """
-        torch.sqrt(input)
-        """
-        api_name = 'torch.sqrt'
+        code = "torch.sqrt(input)"
         expected_ms_api_name = 'P.Sqrt'
-        start = code.find(api_name)
 
-        replaced_code, new_start = self.converter_ins.convert_api(code, start, api_name)
+        replaced_code = self.converter_ins.convert_api(code)
         assert replaced_code == code.replace('torch.sqrt(input)',
                                              '{}()(input)'.format(expected_ms_api_name))
-        assert new_start == start + len(expected_ms_api_name)
 
     def test_convert_api_torch_dot_eye_with_n(self):
         """Test convert_api function work ok when convert api torch.eye"""
-        code = """
-        torch.eye(3)
-        """
-        api_name = 'torch.eye'
+        code = "torch.eye(3)"
         expected_ms_api_name = 'P.Eye'
-        start = code.find(api_name)
 
-        replaced_code, new_start = self.converter_ins.convert_api(code, start, api_name)
+        replaced_code = self.converter_ins.convert_api(code)
         assert replaced_code == code.replace('torch.eye(3)',
                                              '{}()(3, 3, mindspore.int32)'.format(expected_ms_api_name))
-        assert new_start == start + len(expected_ms_api_name)
 
     def test_convert_api_torch_dot_eye_with_m(self):
         """Test convert_api function work ok when convert api torch.eye"""
-        code = """
-        torch.eye(3, 4)
-        """
-        api_name = 'torch.eye'
+        code = "torch.eye(3, 4)"
         expected_ms_api_name = 'P.Eye'
-        start = code.find(api_name)
 
-        replaced_code, new_start = self.converter_ins.convert_api(code, start, api_name)
+        replaced_code = self.converter_ins.convert_api(code)
         assert replaced_code == code.replace('torch.eye(3, 4)',
                                              '{}()(3, 4, mindspore.int32)'.format(expected_ms_api_name))
-        assert new_start == start + len(expected_ms_api_name)
 
     def test_convert_api_torch_dot_add_with_alpha_default(self):
         """Test convert_api function work ok when convert api torch.add"""
-        code = """
-        torch.add(input, value)
-        """
-        api_name = 'torch.add'
+        code = "torch.add(input, value)"
         expected_ms_api_name = 'P.TensorAdd'
-        start = code.find(api_name)
 
-        replaced_code, new_start = self.converter_ins.convert_api(code, start, api_name)
+        replaced_code = self.converter_ins.convert_api(code)
         assert replaced_code == code.replace('torch.add(input, value)',
                                              '{}()(input, value)'.format(expected_ms_api_name))
-        assert new_start == start + len(expected_ms_api_name)
 
     def test_convert_api_torch_dot_add_with_alpha_not_default(self):
         """Test convert_api function work ok when convert api torch.add"""
-        code = """
-        torch.add(input, value, 3)
-        """
-        api_name = 'torch.add'
+        code = "torch.add(input, value, 3)"
         expected_ms_api_name = 'P.TensorAdd'
-        start = code.find(api_name)
 
-        replaced_code, new_start = self.converter_ins.convert_api(code, start, api_name)
+        replaced_code = self.converter_ins.convert_api(code)
         assert replaced_code == code.replace('torch.add(input, value, 3)',
                                              '{}()(input, value*3)'.format(expected_ms_api_name))
-        assert new_start == start + len(expected_ms_api_name)
 
     # test convert_api with F ops
     def test_convert_api_f_normalize(self):
         """Test convert_api function work ok when convert api F.normalize"""
-        code = """
-        input = torch.randn(2, 3, 5)
-        F.normalize(input)
-        """
-        api_name = 'F.normalize'
-        start = code.find(api_name)
+        code = "F.normalize(input)"
         expected_ms_api_name = 'P.L2Normalize'
 
-        replaced_code, new_start = self.converter_ins.convert_api(code, start, api_name)
+        replaced_code = self.converter_ins.convert_api(code)
         assert replaced_code == code.replace('F.normalize(input)',
                                              '{}(1, 1e-12)(input)'.format(expected_ms_api_name))
-        assert new_start == start + len(expected_ms_api_name)
 
     def test_convert_api_f_sigmoid(self):
         """Test convert_api function work ok when convert api F.sigmoid"""
-        code = """
-        input = torch.randn(2, 3, 5)
-        F.sigmoid(input)
-        """
-        api_name = 'F.sigmoid'
-        start = code.find(api_name)
+        code = "F.sigmoid(input)"
         expected_ms_api_name = 'P.Sigmoid'
 
-        replaced_code, new_start = self.converter_ins.convert_api(code, start, api_name)
+        replaced_code = self.converter_ins.convert_api(code)
         assert replaced_code == code.replace('F.sigmoid(input)',
                                              '{}()(input)'.format(expected_ms_api_name))
-        assert new_start == start + len(expected_ms_api_name)
 
     # test convert_api with tensor dot ops
     def test_convert_api_tensor_dot_repeat(self):
         """Test convert_api function work ok when convert api .repeat"""
-        code = """
-        x.repeat(4, 2)
-        """
-        api_name = '.repeat'
-        start = code.find(api_name)
+        code = "x.repeat(4, 2)"
         expected_ms_api_name = 'P.Tile'
 
-        replaced_code, new_start = self.converter_ins.convert_api(code, start, api_name)
+        replaced_code = self.converter_ins.convert_api(code)
         assert replaced_code == code.replace('x.repeat(4, 2)',
                                              '{}()(x, {})'.format(expected_ms_api_name, '(4, 2,)'))
-        assert new_start == start + len(expected_ms_api_name)
 
     def test_convert_api_tensor_dot_permute(self):
         """Test convert_api function work ok when convert api .permute"""
-        code = """
-        x.permute(2, 0, 1)
-        """
-        api_name = '.permute'
-        start = code.find(api_name)
+        code = "x.permute(2, 0, 1)"
         expected_ms_api_name = 'P.Transpose'
 
-        replaced_code, new_start = self.converter_ins.convert_api(code, start, api_name)
+        replaced_code = self.converter_ins.convert_api(code)
         assert replaced_code == code.replace('x.permute(2, 0, 1)',
                                              '{}()(x, (2, 0, 1,))'.format(expected_ms_api_name))
-        assert new_start == start + len(expected_ms_api_name)

tests/ut/mindconverter/test_forward_call.py

@@ -15,7 +15,6 @@
 """Test forward_call module."""
 import ast
 import textwrap
-from unittest.mock import patch
 
 from mindinsight.mindconverter.forward_call import ForwardCall
 
@@ -50,12 +49,10 @@ class TestForwardCall:
                 return out
     """)
 
-    @patch.object(ForwardCall, 'process')
-    def test_process(self, mock_process):
+    def test_process(self):
         """Test the function of visit ast tree to find out forward functions."""
-        mock_process.return_value = None
-        forward_call = ForwardCall("mock")
-        forward_call.visit(ast.parse(self.source))
+        ast_tree = ast.parse(self.source)
+        forward_call = ForwardCall(ast_tree)
 
         expect_calls = ['TestNet.forward',
                         'TestNet.forward1',
@@ -70,6 +67,6 @@ class TestForwardCall:
                         'TestNet.fc3',
                         ]
         expect_calls.sort()
-        real_calls = list(forward_call.calls)
+        real_calls = list(forward_call.calls.keys())
         real_calls.sort()
         assert real_calls == expect_calls