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358 lines
14 KiB
358 lines
14 KiB
# Copyright 2016 The Meson development team |
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# Licensed under the Apache License, Version 2.0 (the "License"); |
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# you may not use this file except in compliance with the License. |
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# You may obtain a copy of the License at |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, |
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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# See the License for the specific language governing permissions and |
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# limitations under the License. |
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# This class contains the basic functionality needed to run any interpreter |
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# or an interpreter-based tool. |
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from .visitor import AstVisitor |
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from .. import interpreterbase, mparser, mesonlib |
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from .. import environment |
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from ..interpreterbase import InvalidArguments, BreakRequest, ContinueRequest |
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from ..mparser import ( |
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ArgumentNode, |
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ArithmeticNode, |
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ArrayNode, |
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AssignmentNode, |
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BaseNode, |
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ElementaryNode, |
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EmptyNode, |
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IdNode, |
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MethodNode, |
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PlusAssignmentNode, |
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TernaryNode, |
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) |
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import os, sys |
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import typing as T |
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class DontCareObject(interpreterbase.InterpreterObject): |
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pass |
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class MockExecutable(interpreterbase.InterpreterObject): |
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pass |
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class MockStaticLibrary(interpreterbase.InterpreterObject): |
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pass |
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class MockSharedLibrary(interpreterbase.InterpreterObject): |
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pass |
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class MockCustomTarget(interpreterbase.InterpreterObject): |
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pass |
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class MockRunTarget(interpreterbase.InterpreterObject): |
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pass |
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ADD_SOURCE = 0 |
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REMOVE_SOURCE = 1 |
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class AstInterpreter(interpreterbase.InterpreterBase): |
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def __init__(self, source_root: str, subdir: str, visitors: T.Optional[T.List[AstVisitor]] = None): |
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super().__init__(source_root, subdir) |
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self.visitors = visitors if visitors is not None else [] |
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self.visited_subdirs = {} |
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self.assignments = {} |
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self.assign_vals = {} |
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self.reverse_assignment = {} |
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self.funcs.update({'project': self.func_do_nothing, |
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'test': self.func_do_nothing, |
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'benchmark': self.func_do_nothing, |
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'install_headers': self.func_do_nothing, |
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'install_man': self.func_do_nothing, |
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'install_data': self.func_do_nothing, |
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'install_subdir': self.func_do_nothing, |
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'configuration_data': self.func_do_nothing, |
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'configure_file': self.func_do_nothing, |
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'find_program': self.func_do_nothing, |
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'include_directories': self.func_do_nothing, |
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'add_global_arguments': self.func_do_nothing, |
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'add_global_link_arguments': self.func_do_nothing, |
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'add_project_arguments': self.func_do_nothing, |
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'add_project_link_arguments': self.func_do_nothing, |
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'message': self.func_do_nothing, |
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'generator': self.func_do_nothing, |
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'error': self.func_do_nothing, |
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'run_command': self.func_do_nothing, |
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'assert': self.func_do_nothing, |
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'subproject': self.func_do_nothing, |
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'dependency': self.func_do_nothing, |
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'get_option': self.func_do_nothing, |
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'join_paths': self.func_do_nothing, |
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'environment': self.func_do_nothing, |
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'import': self.func_do_nothing, |
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'vcs_tag': self.func_do_nothing, |
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'add_languages': self.func_do_nothing, |
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'declare_dependency': self.func_do_nothing, |
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'files': self.func_do_nothing, |
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'executable': self.func_do_nothing, |
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'static_library': self.func_do_nothing, |
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'shared_library': self.func_do_nothing, |
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'library': self.func_do_nothing, |
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'build_target': self.func_do_nothing, |
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'custom_target': self.func_do_nothing, |
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'run_target': self.func_do_nothing, |
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'subdir': self.func_subdir, |
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'set_variable': self.func_do_nothing, |
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'get_variable': self.func_do_nothing, |
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'is_disabler': self.func_do_nothing, |
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'is_variable': self.func_do_nothing, |
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'disabler': self.func_do_nothing, |
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'gettext': self.func_do_nothing, |
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'jar': self.func_do_nothing, |
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'warning': self.func_do_nothing, |
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'shared_module': self.func_do_nothing, |
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'option': self.func_do_nothing, |
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'both_libraries': self.func_do_nothing, |
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'add_test_setup': self.func_do_nothing, |
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'find_library': self.func_do_nothing, |
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'subdir_done': self.func_do_nothing, |
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'alias_target': self.func_do_nothing, |
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'summary': self.func_do_nothing, |
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}) |
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def func_do_nothing(self, node, args, kwargs): |
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return True |
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def load_root_meson_file(self): |
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super().load_root_meson_file() |
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for i in self.visitors: |
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self.ast.accept(i) |
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def func_subdir(self, node, args, kwargs): |
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args = self.flatten_args(args) |
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if len(args) != 1 or not isinstance(args[0], str): |
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sys.stderr.write('Unable to evaluate subdir({}) in AstInterpreter --> Skipping\n'.format(args)) |
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return |
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prev_subdir = self.subdir |
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subdir = os.path.join(prev_subdir, args[0]) |
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absdir = os.path.join(self.source_root, subdir) |
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buildfilename = os.path.join(subdir, environment.build_filename) |
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absname = os.path.join(self.source_root, buildfilename) |
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symlinkless_dir = os.path.realpath(absdir) |
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if symlinkless_dir in self.visited_subdirs: |
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sys.stderr.write('Trying to enter {} which has already been visited --> Skipping\n'.format(args[0])) |
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return |
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self.visited_subdirs[symlinkless_dir] = True |
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if not os.path.isfile(absname): |
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sys.stderr.write('Unable to find build file {} --> Skipping\n'.format(buildfilename)) |
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return |
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with open(absname, encoding='utf8') as f: |
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code = f.read() |
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assert(isinstance(code, str)) |
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try: |
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codeblock = mparser.Parser(code, absname).parse() |
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except mesonlib.MesonException as me: |
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me.file = absname |
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raise me |
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self.subdir = subdir |
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for i in self.visitors: |
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codeblock.accept(i) |
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self.evaluate_codeblock(codeblock) |
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self.subdir = prev_subdir |
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def method_call(self, node): |
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return True |
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def evaluate_arithmeticstatement(self, cur): |
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self.evaluate_statement(cur.left) |
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self.evaluate_statement(cur.right) |
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return 0 |
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def evaluate_uminusstatement(self, cur): |
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self.evaluate_statement(cur.value) |
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return 0 |
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def evaluate_ternary(self, node): |
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assert(isinstance(node, TernaryNode)) |
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self.evaluate_statement(node.condition) |
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self.evaluate_statement(node.trueblock) |
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self.evaluate_statement(node.falseblock) |
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def evaluate_plusassign(self, node): |
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assert(isinstance(node, PlusAssignmentNode)) |
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if node.var_name not in self.assignments: |
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self.assignments[node.var_name] = [] |
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self.assign_vals[node.var_name] = [] |
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self.assignments[node.var_name] += [node.value] # Save a reference to the value node |
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if hasattr(node.value, 'ast_id'): |
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self.reverse_assignment[node.value.ast_id] = node |
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self.assign_vals[node.var_name] += [self.evaluate_statement(node.value)] |
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def evaluate_indexing(self, node): |
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return 0 |
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def unknown_function_called(self, func_name): |
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pass |
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def reduce_arguments(self, args): |
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if isinstance(args, ArgumentNode): |
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if args.incorrect_order(): |
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raise InvalidArguments('All keyword arguments must be after positional arguments.') |
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return self.flatten_args(args.arguments), args.kwargs |
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else: |
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return self.flatten_args(args), {} |
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def evaluate_comparison(self, node): |
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self.evaluate_statement(node.left) |
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self.evaluate_statement(node.right) |
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return False |
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def evaluate_andstatement(self, cur): |
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self.evaluate_statement(cur.left) |
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self.evaluate_statement(cur.right) |
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return False |
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def evaluate_orstatement(self, cur): |
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self.evaluate_statement(cur.left) |
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self.evaluate_statement(cur.right) |
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return False |
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def evaluate_foreach(self, node): |
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try: |
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self.evaluate_codeblock(node.block) |
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except ContinueRequest: |
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pass |
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except BreakRequest: |
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pass |
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def evaluate_if(self, node): |
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for i in node.ifs: |
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self.evaluate_codeblock(i.block) |
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if not isinstance(node.elseblock, EmptyNode): |
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self.evaluate_codeblock(node.elseblock) |
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def get_variable(self, varname): |
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return 0 |
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def assignment(self, node): |
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assert(isinstance(node, AssignmentNode)) |
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self.assignments[node.var_name] = [node.value] # Save a reference to the value node |
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if hasattr(node.value, 'ast_id'): |
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self.reverse_assignment[node.value.ast_id] = node |
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self.assign_vals[node.var_name] = [self.evaluate_statement(node.value)] # Evaluate the value just in case |
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def resolve_node(self, node: BaseNode, include_unknown_args: bool = False, id_loop_detect: T.Optional[T.List[str]] = None) -> T.Optional[T.Any]: |
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def quick_resolve(n: BaseNode, loop_detect: T.Optional[T.List[str]] = None) -> T.Any: |
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if loop_detect is None: |
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loop_detect = [] |
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if isinstance(n, IdNode): |
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if n.value in loop_detect or n.value not in self.assignments: |
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return [] |
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return quick_resolve(self.assignments[n.value][0], loop_detect = loop_detect + [n.value]) |
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elif isinstance(n, ElementaryNode): |
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return n.value |
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else: |
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return n |
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if id_loop_detect is None: |
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id_loop_detect = [] |
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result = None |
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if not isinstance(node, BaseNode): |
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return None |
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assert(hasattr(node, 'ast_id')) |
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if node.ast_id in id_loop_detect: |
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return None # Loop detected |
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id_loop_detect += [node.ast_id] |
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# Try to evealuate the value of the node |
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if isinstance(node, IdNode): |
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result = quick_resolve(node) |
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elif isinstance(node, ElementaryNode): |
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result = node.value |
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elif isinstance(node, ArrayNode): |
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result = [x for x in node.args.arguments] |
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elif isinstance(node, ArgumentNode): |
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result = [x for x in node.arguments] |
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elif isinstance(node, ArithmeticNode): |
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if node.operation != 'add': |
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return None # Only handle string and array concats |
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l = quick_resolve(node.left) |
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r = quick_resolve(node.right) |
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if isinstance(l, str) and isinstance(r, str): |
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result = l + r # String concatenation detected |
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else: |
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result = self.flatten_args(l, include_unknown_args, id_loop_detect) + self.flatten_args(r, include_unknown_args, id_loop_detect) |
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elif isinstance(node, MethodNode): |
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src = quick_resolve(node.source_object) |
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margs = self.flatten_args(node.args, include_unknown_args, id_loop_detect) |
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try: |
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if isinstance(src, str): |
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result = self.string_method_call(src, node.name, margs) |
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elif isinstance(src, bool): |
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result = self.bool_method_call(src, node.name, margs) |
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elif isinstance(src, int): |
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result = self.int_method_call(src, node.name, margs) |
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elif isinstance(src, list): |
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result = self.array_method_call(src, node.name, margs) |
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elif isinstance(src, dict): |
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result = self.dict_method_call(src, node.name, margs) |
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except mesonlib.MesonException: |
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return None |
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# Ensure that the result is fully resolved (no more nodes) |
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if isinstance(result, BaseNode): |
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result = self.resolve_node(result, include_unknown_args, id_loop_detect) |
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elif isinstance(result, list): |
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new_res = [] |
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for i in result: |
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if isinstance(i, BaseNode): |
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resolved = self.resolve_node(i, include_unknown_args, id_loop_detect) |
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if resolved is not None: |
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new_res += self.flatten_args(resolved, include_unknown_args, id_loop_detect) |
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else: |
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new_res += [i] |
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result = new_res |
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return result |
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def flatten_args(self, args: T.Any, include_unknown_args: bool = False, id_loop_detect: T.Optional[T.List[str]] = None) -> T.List[T.Any]: |
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# Make sure we are always dealing with lists |
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if not isinstance(args, list): |
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args = [args] |
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flattend_args = [] |
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# Resolve the contents of args |
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for i in args: |
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if isinstance(i, BaseNode): |
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resolved = self.resolve_node(i, include_unknown_args, id_loop_detect) |
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if resolved is not None: |
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if not isinstance(resolved, list): |
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resolved = [resolved] |
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flattend_args += resolved |
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elif isinstance(i, (str, bool, int, float)) or include_unknown_args: |
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flattend_args += [i] |
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return flattend_args |
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def flatten_kwargs(self, kwargs: object, include_unknown_args: bool = False): |
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flattend_kwargs = {} |
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for key, val in kwargs.items(): |
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if isinstance(val, BaseNode): |
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resolved = self.resolve_node(val, include_unknown_args) |
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if resolved is not None: |
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flattend_kwargs[key] = resolved |
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elif isinstance(val, (str, bool, int, float)) or include_unknown_args: |
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flattend_kwargs[key] = val |
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return flattend_kwargs
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