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# Copyright 2016 The Meson development team
# 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.
# This class contains the basic functionality needed to run any interpreter
# or an interpreter-based tool.
from .visitor import AstVisitor
from .. import interpreterbase, mparser, mesonlib
from .. import environment
from ..interpreterbase import InvalidArguments, BreakRequest, ContinueRequest
from ..mparser import (
ArgumentNode,
ArithmeticNode,
ArrayNode,
AssignmentNode,
BaseNode,
ElementaryNode,
EmptyNode,
IdNode,
MethodNode,
PlusAssignmentNode,
TernaryNode,
)
import os, sys
from typing import List, Any, Optional
class DontCareObject(interpreterbase.InterpreterObject):
pass
class MockExecutable(interpreterbase.InterpreterObject):
pass
class MockStaticLibrary(interpreterbase.InterpreterObject):
pass
class MockSharedLibrary(interpreterbase.InterpreterObject):
pass
class MockCustomTarget(interpreterbase.InterpreterObject):
pass
class MockRunTarget(interpreterbase.InterpreterObject):
pass
ADD_SOURCE = 0
REMOVE_SOURCE = 1
class AstInterpreter(interpreterbase.InterpreterBase):
def __init__(self, source_root: str, subdir: str, visitors: Optional[List[AstVisitor]] = None):
super().__init__(source_root, subdir)
self.visitors = visitors if visitors is not None else []
self.visited_subdirs = {}
self.assignments = {}
self.assign_vals = {}
self.reverse_assignment = {}
self.funcs.update({'project': self.func_do_nothing,
'test': self.func_do_nothing,
'benchmark': self.func_do_nothing,
'install_headers': self.func_do_nothing,
'install_man': self.func_do_nothing,
'install_data': self.func_do_nothing,
'install_subdir': self.func_do_nothing,
'configuration_data': self.func_do_nothing,
'configure_file': self.func_do_nothing,
'find_program': self.func_do_nothing,
'include_directories': self.func_do_nothing,
'add_global_arguments': self.func_do_nothing,
'add_global_link_arguments': self.func_do_nothing,
'add_project_arguments': self.func_do_nothing,
'add_project_link_arguments': self.func_do_nothing,
'message': self.func_do_nothing,
'generator': self.func_do_nothing,
'error': self.func_do_nothing,
'run_command': self.func_do_nothing,
'assert': self.func_do_nothing,
'subproject': self.func_do_nothing,
'dependency': self.func_do_nothing,
'get_option': self.func_do_nothing,
'join_paths': self.func_do_nothing,
'environment': self.func_do_nothing,
'import': self.func_do_nothing,
'vcs_tag': self.func_do_nothing,
'add_languages': self.func_do_nothing,
'declare_dependency': self.func_do_nothing,
'files': self.func_do_nothing,
'executable': self.func_do_nothing,
'static_library': self.func_do_nothing,
'shared_library': self.func_do_nothing,
'library': self.func_do_nothing,
'build_target': self.func_do_nothing,
'custom_target': self.func_do_nothing,
'run_target': self.func_do_nothing,
'subdir': self.func_subdir,
'set_variable': self.func_do_nothing,
'get_variable': self.func_do_nothing,
'is_disabler': self.func_do_nothing,
'is_variable': self.func_do_nothing,
'disabler': self.func_do_nothing,
'gettext': self.func_do_nothing,
'jar': self.func_do_nothing,
'warning': self.func_do_nothing,
'shared_module': self.func_do_nothing,
'option': self.func_do_nothing,
'both_libraries': self.func_do_nothing,
'add_test_setup': self.func_do_nothing,
'find_library': self.func_do_nothing,
'subdir_done': self.func_do_nothing,
'alias_target': self.func_do_nothing,
})
def func_do_nothing(self, node, args, kwargs):
return True
def load_root_meson_file(self):
super().load_root_meson_file()
for i in self.visitors:
self.ast.accept(i)
def func_subdir(self, node, args, kwargs):
args = self.flatten_args(args)
if len(args) != 1 or not isinstance(args[0], str):
sys.stderr.write('Unable to evaluate subdir({}) in AstInterpreter --> Skipping\n'.format(args))
return
prev_subdir = self.subdir
subdir = os.path.join(prev_subdir, args[0])
absdir = os.path.join(self.source_root, subdir)
buildfilename = os.path.join(subdir, environment.build_filename)
absname = os.path.join(self.source_root, buildfilename)
symlinkless_dir = os.path.realpath(absdir)
if symlinkless_dir in self.visited_subdirs:
sys.stderr.write('Trying to enter {} which has already been visited --> Skipping\n'.format(args[0]))
return
self.visited_subdirs[symlinkless_dir] = True
if not os.path.isfile(absname):
sys.stderr.write('Unable to find build file {} --> Skipping\n'.format(buildfilename))
return
with open(absname, encoding='utf8') as f:
code = f.read()
assert(isinstance(code, str))
try:
codeblock = mparser.Parser(code, subdir).parse()
except mesonlib.MesonException as me:
me.file = buildfilename
raise me
self.subdir = subdir
for i in self.visitors:
codeblock.accept(i)
self.evaluate_codeblock(codeblock)
self.subdir = prev_subdir
def method_call(self, node):
return True
def evaluate_arithmeticstatement(self, cur):
self.evaluate_statement(cur.left)
self.evaluate_statement(cur.right)
return 0
def evaluate_uminusstatement(self, cur):
self.evaluate_statement(cur.value)
return 0
def evaluate_ternary(self, node):
assert(isinstance(node, TernaryNode))
self.evaluate_statement(node.condition)
self.evaluate_statement(node.trueblock)
self.evaluate_statement(node.falseblock)
def evaluate_plusassign(self, node):
assert(isinstance(node, PlusAssignmentNode))
if node.var_name not in self.assignments:
self.assignments[node.var_name] = []
self.assign_vals[node.var_name] = []
self.assignments[node.var_name] += [node.value] # Save a reference to the value node
if hasattr(node.value, 'ast_id'):
self.reverse_assignment[node.value.ast_id] = node
self.assign_vals[node.var_name] += [self.evaluate_statement(node.value)]
def evaluate_indexing(self, node):
return 0
def unknown_function_called(self, func_name):
pass
def reduce_arguments(self, args):
if isinstance(args, ArgumentNode):
if args.incorrect_order():
raise InvalidArguments('All keyword arguments must be after positional arguments.')
return self.flatten_args(args.arguments), args.kwargs
else:
return self.flatten_args(args), {}
def evaluate_comparison(self, node):
self.evaluate_statement(node.left)
self.evaluate_statement(node.right)
return False
def evaluate_andstatement(self, cur):
self.evaluate_statement(cur.left)
self.evaluate_statement(cur.right)
return False
def evaluate_orstatement(self, cur):
self.evaluate_statement(cur.left)
self.evaluate_statement(cur.right)
return False
def evaluate_foreach(self, node):
try:
self.evaluate_codeblock(node.block)
except ContinueRequest:
pass
except BreakRequest:
pass
def evaluate_if(self, node):
for i in node.ifs:
self.evaluate_codeblock(i.block)
if not isinstance(node.elseblock, EmptyNode):
self.evaluate_codeblock(node.elseblock)
def get_variable(self, varname):
return 0
def assignment(self, node):
assert(isinstance(node, AssignmentNode))
self.assignments[node.var_name] = [node.value] # Save a reference to the value node
if hasattr(node.value, 'ast_id'):
self.reverse_assignment[node.value.ast_id] = node
self.assign_vals[node.var_name] = [self.evaluate_statement(node.value)] # Evaluate the value just in case
def flatten_args(self, args: Any, include_unknown_args: bool = False, id_loop_detect: Optional[List[str]] = None) -> List[str]:
def quick_resolve(n: BaseNode, loop_detect: Optional[List[str]] = None) -> Any:
if loop_detect is None:
loop_detect = []
if isinstance(n, IdNode):
if n.value in loop_detect or n.value not in self.assignments:
return []
return quick_resolve(self.assignments[n.value][0], loop_detect = loop_detect + [n.value])
elif isinstance(n, ElementaryNode):
return n.value
else:
return n
if id_loop_detect is None:
id_loop_detect = []
flattend_args = []
6 years ago
if isinstance(args, BaseNode):
assert(hasattr(args, 'ast_id'))
if args.ast_id in id_loop_detect:
return [] # Loop detected
id_loop_detect += [args.ast_id]
if isinstance(args, ArrayNode):
args = [x for x in args.args.arguments]
elif isinstance(args, ArgumentNode):
args = [x for x in args.arguments]
elif isinstance(args, ArithmeticNode):
if args.operation != 'add':
return [] # Only handle string and array concats
l = quick_resolve(args.left)
r = quick_resolve(args.right)
if isinstance(l, str) and isinstance(r, str):
args = [l + r] # String concatination detected
else:
args = self.flatten_args(l, include_unknown_args, id_loop_detect) + self.flatten_args(r, include_unknown_args, id_loop_detect)
elif isinstance(args, MethodNode):
src = quick_resolve(args.source_object)
margs = self.flatten_args(args.args, include_unknown_args, id_loop_detect)
try:
if isinstance(src, str):
args = [self.string_method_call(src, args.name, margs)]
elif isinstance(src, bool):
args = [self.bool_method_call(src, args.name, margs)]
elif isinstance(src, int):
args = [self.int_method_call(src, args.name, margs)]
elif isinstance(src, list):
args = [self.array_method_call(src, args.name, margs)]
elif isinstance(src, dict):
args = [self.dict_method_call(src, args.name, margs)]
else:
return []
except mesonlib.MesonException:
return []
# Make sure we are always dealing with lists
if not isinstance(args, list):
args = [args]
# Resolve the contents of args
for i in args:
6 years ago
if isinstance(i, IdNode):
flattend_args += self.flatten_args(quick_resolve(i), include_unknown_args, id_loop_detect)
elif isinstance(i, (ArrayNode, ArgumentNode, ArithmeticNode, MethodNode)):
flattend_args += self.flatten_args(i, include_unknown_args, id_loop_detect)
elif isinstance(i, mparser.ElementaryNode):
flattend_args += [i.value]
elif isinstance(i, (str, bool, int, float)):
flattend_args += [i]
elif include_unknown_args:
flattend_args += [i]
return flattend_args
def flatten_kwargs(self, kwargs: object, include_unknown_args: bool = False):
flattend_kwargs = {}
for key, val in kwargs.items():
if isinstance(val, ElementaryNode):
flattend_kwargs[key] = val.value
elif isinstance(val, (ArrayNode, ArgumentNode, ArithmeticNode, MethodNode)):
flattend_kwargs[key] = self.flatten_args(val, include_unknown_args)
elif isinstance(val, (str, bool, int, float)) or include_unknown_args:
flattend_kwargs[key] = val
return flattend_kwargs