parser: add SymbolNode to preserve operators

5 files changed, 239 insertions, 86 deletions

diff --git a/mesonbuild/ast/visitor.py b/mesonbuild/ast/visitor.py
index a837826..d05d3ff 100644
--- a/mesonbuild/ast/visitor.py
+++ b/mesonbuild/ast/visitor.py
@@ -55,6 +55,12 @@ class AstVisitor:
     def visit_BreakNode(self, node: mparser.BreakNode) -> None:
         self.visit_default_func(node)
 
+    def visit_SymbolNode(self, node: mparser.SymbolNode) -> None:
+        self.visit_default_func(node)
+
+    def visit_WhitespaceNode(self, node: mparser.WhitespaceNode) -> None:
+        self.visit_default_func(node)
+
     def visit_ArrayNode(self, node: mparser.ArrayNode) -> None:
         self.visit_default_func(node)
         node.args.accept(self)
diff --git a/mesonbuild/cargo/builder.py b/mesonbuild/cargo/builder.py
index 6ef66ee..9c650b9 100644
--- a/mesonbuild/cargo/builder.py
+++ b/mesonbuild/cargo/builder.py
@@ -28,6 +28,10 @@ def _token(tid: str, filename: str, value: mparser.TV_TokenTypes) -> mparser.Tok
     return mparser.Token(tid, filename, -1, -1, -1, (-1, -1), value)
 
 
+def _symbol(filename: str, val: str) -> mparser.SymbolNode:
+    return mparser.SymbolNode(_token('', filename, val))
+
+
 def string(value: str, filename: str) -> mparser.StringNode:
     """Build A StringNode
 
@@ -67,7 +71,7 @@ def array(value: T.List[mparser.BaseNode], filename: str) -> mparser.ArrayNode:
     """
     args = mparser.ArgumentNode(_token('array', filename, 'unused'))
     args.arguments = value
-    return mparser.ArrayNode(args, -1, -1, -1, -1)
+    return mparser.ArrayNode(_symbol(filename, '['), args, _symbol(filename, ']'), -1, -1, -1, -1)
 
 
 def identifier(value: str, filename: str) -> mparser.IdNode:
@@ -97,7 +101,7 @@ def method(name: str, id_: mparser.IdNode,
         args.arguments = pos
     if kw is not None:
         args.kwargs = {identifier(k, id_.filename): v for k, v in kw.items()}
-    return mparser.MethodNode(id_.filename, -1, -1, id_, identifier(name, id_.filename), args)
+    return mparser.MethodNode(id_.filename, -1, -1, id_, _symbol(id_.filename, '.'), identifier(name, id_.filename), _symbol(id_.filename, '('), args, _symbol(id_.filename, ')'))
 
 
 def function(name: str, filename: str,
@@ -117,7 +121,7 @@ def function(name: str, filename: str,
         args.arguments = pos
     if kw is not None:
         args.kwargs = {identifier(k, filename): v for k, v in kw.items()}
-    return mparser.FunctionNode(filename, -1, -1, -1, -1, identifier(name, filename), args)
+    return mparser.FunctionNode(filename, -1, -1, -1, -1, identifier(name, filename), _symbol(filename, '('), args, _symbol(filename, ')'))
 
 
 def equal(lhs: mparser.BaseNode, rhs: mparser.BaseNode) -> mparser.ComparisonNode:
@@ -127,7 +131,7 @@ def equal(lhs: mparser.BaseNode, rhs: mparser.BaseNode) -> mparser.ComparisonNod
     :param rhs: the right hand side of the equal
     :return: A compraison node
     """
-    return mparser.ComparisonNode('==', lhs, rhs)
+    return mparser.ComparisonNode('==', lhs, _symbol(lhs.filename, '=='), rhs)
 
 
 def or_(lhs: mparser.BaseNode, rhs: mparser.BaseNode) -> mparser.OrNode:
@@ -137,7 +141,7 @@ def or_(lhs: mparser.BaseNode, rhs: mparser.BaseNode) -> mparser.OrNode:
     :param rhs: The Right of the Node
     :return: The OrNode
     """
-    return mparser.OrNode(lhs, rhs)
+    return mparser.OrNode(lhs, _symbol(lhs.filename, 'or'), rhs)
 
 
 def and_(lhs: mparser.BaseNode, rhs: mparser.BaseNode) -> mparser.AndNode:
@@ -147,7 +151,7 @@ def and_(lhs: mparser.BaseNode, rhs: mparser.BaseNode) -> mparser.AndNode:
     :param rhs: The right of the And
     :return: The AndNode
     """
-    return mparser.AndNode(lhs, rhs)
+    return mparser.AndNode(lhs, _symbol(lhs.filename, 'and'), rhs)
 
 
 def not_(value: mparser.BaseNode, filename: str) -> mparser.NotNode:
@@ -157,7 +161,7 @@ def not_(value: mparser.BaseNode, filename: str) -> mparser.NotNode:
     :param filename: the string filename
     :return: The NotNode
     """
-    return mparser.NotNode(_token('not', filename, ''), value)
+    return mparser.NotNode(_token('not', filename, ''), _symbol(filename, 'not'), value)
 
 
 def assign(value: mparser.BaseNode, varname: str, filename: str) -> mparser.AssignmentNode:
@@ -168,7 +172,7 @@ def assign(value: mparser.BaseNode, varname: str, filename: str) -> mparser.Assi
     :param filename: The filename
     :return: An AssignmentNode
     """
-    return mparser.AssignmentNode(filename, -1, -1, identifier(varname, filename), value)
+    return mparser.AssignmentNode(filename, -1, -1, identifier(varname, filename), _symbol(filename, '='), value)
 
 
 def block(filename: str) -> mparser.CodeBlockNode:
diff --git a/mesonbuild/cmake/interpreter.py b/mesonbuild/cmake/interpreter.py
index 0703c1b..4f3b31e 100644
--- a/mesonbuild/cmake/interpreter.py
+++ b/mesonbuild/cmake/interpreter.py
@@ -48,6 +48,7 @@ from ..mparser import (
     IndexNode,
     MethodNode,
     NumberNode,
+    SymbolNode,
 )
 
 
@@ -959,6 +960,9 @@ class CMakeInterpreter:
         def token(tid: str = 'string', val: TYPE_mixed = '') -> Token:
             return Token(tid, self.subdir.as_posix(), 0, 0, 0, None, val)
 
+        def symbol(val: str) -> SymbolNode:
+            return SymbolNode(token('', val))
+
         def string(value: str) -> StringNode:
             return StringNode(token(val=value), escape=False)
 
@@ -984,14 +988,14 @@ class CMakeInterpreter:
             raise RuntimeError('invalid type of value: {} ({})'.format(type(value).__name__, str(value)))
 
         def indexed(node: BaseNode, index: int) -> IndexNode:
-            return IndexNode(node, nodeify(index))
+            return IndexNode(node, symbol('['), nodeify(index), symbol(']'))
 
         def array(elements: TYPE_mixed_list) -> ArrayNode:
             args = ArgumentNode(token())
             if not isinstance(elements, list):
                 elements = [args]
             args.arguments += [nodeify(x) for x in elements if x is not None]
-            return ArrayNode(args, 0, 0, 0, 0)
+            return ArrayNode(symbol('['), args, symbol(']'), 0, 0, 0, 0)
 
         def function(name: str, args: T.Optional[TYPE_mixed_list] = None, kwargs: T.Optional[TYPE_mixed_kwargs] = None) -> FunctionNode:
             args = [] if args is None else args
@@ -1002,7 +1006,7 @@ class CMakeInterpreter:
                 args = [args]
             args_n.arguments = [nodeify(x) for x in args if x is not None]
             args_n.kwargs = {id_node(k): nodeify(v) for k, v in kwargs.items() if v is not None}
-            func_n = FunctionNode(self.subdir.as_posix(), 0, 0, 0, 0, id_node(name), args_n)
+            func_n = FunctionNode(self.subdir.as_posix(), 0, 0, 0, 0, id_node(name), symbol('('), args_n, symbol(')'))
             return func_n
 
         def method(obj: BaseNode, name: str, args: T.Optional[TYPE_mixed_list] = None, kwargs: T.Optional[TYPE_mixed_kwargs] = None) -> MethodNode:
@@ -1014,10 +1018,10 @@ class CMakeInterpreter:
                 args = [args]
             args_n.arguments = [nodeify(x) for x in args if x is not None]
             args_n.kwargs = {id_node(k): nodeify(v) for k, v in kwargs.items() if v is not None}
-            return MethodNode(self.subdir.as_posix(), 0, 0, obj, id_node(name), args_n)
+            return MethodNode(self.subdir.as_posix(), 0, 0, obj, symbol('.'), id_node(name), symbol('('), args_n, symbol(')'))
 
         def assign(var_name: str, value: BaseNode) -> AssignmentNode:
-            return AssignmentNode(self.subdir.as_posix(), 0, 0, id_node(var_name), value)
+            return AssignmentNode(self.subdir.as_posix(), 0, 0, id_node(var_name), symbol('='), value)
 
         # Generate the root code block and the project function call
         root_cb = CodeBlockNode(token())
diff --git a/mesonbuild/mparser.py b/mesonbuild/mparser.py
index 6b578b5..7f329dd 100644
--- a/mesonbuild/mparser.py
+++ b/mesonbuild/mparser.py
@@ -26,6 +26,8 @@ if T.TYPE_CHECKING:
 
     from .ast import AstVisitor
 
+    BaseNodeT = T.TypeVar('BaseNodeT', bound='BaseNode')
+
 # This is the regex for the supported escape sequences of a regular string
 # literal, like 'abc\x00'
 ESCAPE_SEQUENCE_SINGLE_RE = re.compile(r'''
@@ -234,12 +236,14 @@ class BaseNode:
     end_lineno: int = field(hash=False)
     end_colno: int = field(hash=False)
 
-    def __init__(self, lineno: int, colno: int, filename: str, end_lineno: T.Optional[int] = None, end_colno: T.Optional[int] = None) -> None:
+    def __init__(self, lineno: int, colno: int, filename: str,
+                 end_lineno: T.Optional[int] = None, end_colno: T.Optional[int] = None) -> None:
         self.lineno = lineno
         self.colno = colno
         self.filename = filename
         self.end_lineno = end_lineno if end_lineno is not None else lineno
         self.end_colno = end_colno if end_colno is not None else colno
+        self.whitespaces = None
 
         # Attributes for the visitors
         self.level = 0
@@ -313,17 +317,22 @@ class ContinueNode(ElementaryNode):
 class BreakNode(ElementaryNode):
     pass
 
+class SymbolNode(ElementaryNode[str]):
+    pass
+
 @dataclass(unsafe_hash=True)
 class ArgumentNode(BaseNode):
 
     arguments: T.List[BaseNode] = field(hash=False)
-    commas: T.List[Token] = field(hash=False)
+    commas: T.List[SymbolNode] = field(hash=False)
+    columns: T.List[SymbolNode] = field(hash=False)
     kwargs: T.Dict[BaseNode, BaseNode] = field(hash=False)
 
     def __init__(self, token: Token[TV_TokenTypes]):
         super().__init__(token.lineno, token.colno, token.filename)
         self.arguments = []
         self.commas = []
+        self.columns = []
         self.kwargs = {}
         self.order_error = False
 
@@ -363,20 +372,30 @@ class ArgumentNode(BaseNode):
 @dataclass(unsafe_hash=True)
 class ArrayNode(BaseNode):
 
+    lbracket: SymbolNode
     args: ArgumentNode
+    rbracket: SymbolNode
 
-    def __init__(self, args: ArgumentNode, lineno: int, colno: int, end_lineno: int, end_colno: int):
+    def __init__(self, lbracket: SymbolNode, args: ArgumentNode, rbracket: SymbolNode,
+                 lineno: int, colno: int, end_lineno: int, end_colno: int):
         super().__init__(lineno, colno, args.filename, end_lineno=end_lineno, end_colno=end_colno)
+        self.lbracket = lbracket
         self.args = args
+        self.rbracket = rbracket
 
 @dataclass(unsafe_hash=True)
 class DictNode(BaseNode):
 
+    lcurl: SymbolNode
     args: ArgumentNode
+    rcurl: SymbolNode
 
-    def __init__(self, args: ArgumentNode, lineno: int, colno: int, end_lineno: int, end_colno: int):
+    def __init__(self, lcurl: SymbolNode, args: ArgumentNode, rcurl: SymbolNode,
+                 lineno: int, colno: int, end_lineno: int, end_colno: int):
         super().__init__(lineno, colno, args.filename, end_lineno=end_lineno, end_colno=end_colno)
+        self.lcurl = lcurl
         self.args = args
+        self.rcurl = rcurl
 
 class EmptyNode(BaseNode):
     pass
@@ -385,34 +404,40 @@ class EmptyNode(BaseNode):
 class OrNode(BaseNode):
 
     left: BaseNode
+    operator: SymbolNode
     right: BaseNode
 
-    def __init__(self, left: BaseNode, right: BaseNode):
+    def __init__(self, left: BaseNode, operator: SymbolNode, right: BaseNode):
         super().__init__(left.lineno, left.colno, left.filename)
         self.left = left
+        self.operator = operator
         self.right = right
 
 @dataclass(unsafe_hash=True)
 class AndNode(BaseNode):
 
     left: BaseNode
+    operator: SymbolNode
     right: BaseNode
 
-    def __init__(self, left: BaseNode, right: BaseNode):
+    def __init__(self, left: BaseNode, operator: SymbolNode, right: BaseNode):
         super().__init__(left.lineno, left.colno, left.filename)
         self.left = left
+        self.operator = operator
         self.right = right
 
 @dataclass(unsafe_hash=True)
 class ComparisonNode(BaseNode):
 
     left: BaseNode
+    operator: SymbolNode
     right: BaseNode
     ctype: COMPARISONS
 
-    def __init__(self, ctype: COMPARISONS, left: BaseNode, right: BaseNode):
+    def __init__(self, ctype: COMPARISONS, left: BaseNode, operator: SymbolNode, right: BaseNode):
         super().__init__(left.lineno, left.colno, left.filename)
         self.left = left
+        self.operator = operator
         self.right = right
         self.ctype = ctype
 
@@ -423,21 +448,25 @@ class ArithmeticNode(BaseNode):
     right: BaseNode
     # TODO: use a Literal for operation
     operation: str
+    operator: SymbolNode
 
-    def __init__(self, operation: str, left: BaseNode, right: BaseNode):
+    def __init__(self, operation: str, left: BaseNode, operator: SymbolNode, right: BaseNode):
         super().__init__(left.lineno, left.colno, left.filename)
         self.left = left
         self.right = right
         self.operation = operation
+        self.operator = operator
 
 
 @dataclass(unsafe_hash=True)
 class NotNode(BaseNode):
 
+    operator: SymbolNode
     value: BaseNode
 
-    def __init__(self, token: Token[TV_TokenTypes], value: BaseNode):
+    def __init__(self, token: Token[TV_TokenTypes], operator: SymbolNode, value: BaseNode):
         super().__init__(token.lineno, token.colno, token.filename)
+        self.operator = operator
         self.value = value
 
 @dataclass(unsafe_hash=True)
@@ -447,53 +476,73 @@ class CodeBlockNode(BaseNode):
 
     def __init__(self, token: Token[TV_TokenTypes]):
         super().__init__(token.lineno, token.colno, token.filename)
+        self.pre_whitespaces = None
         self.lines = []
 
 @dataclass(unsafe_hash=True)
 class IndexNode(BaseNode):
 
     iobject: BaseNode
+    lbracket: SymbolNode
     index: BaseNode
+    rbracket: SymbolNode
 
-    def __init__(self, iobject: BaseNode, index: BaseNode):
+    def __init__(self, iobject: BaseNode, lbracket: SymbolNode, index: BaseNode, rbracket: SymbolNode):
         super().__init__(iobject.lineno, iobject.colno, iobject.filename)
         self.iobject = iobject
+        self.lbracket = lbracket
         self.index = index
+        self.rbracket = rbracket
 
 @dataclass(unsafe_hash=True)
 class MethodNode(BaseNode):
 
     source_object: BaseNode
+    dot: SymbolNode
     name: IdNode
+    lpar: SymbolNode
     args: ArgumentNode
+    rpar: SymbolNode
 
-    def __init__(self, filename: str, lineno: int, colno: int, source_object: BaseNode, name: IdNode, args: ArgumentNode):
+    def __init__(self, filename: str, lineno: int, colno: int,
+                 source_object: BaseNode, dot: SymbolNode, name: IdNode, lpar: SymbolNode, args: ArgumentNode, rpar: SymbolNode):
         super().__init__(lineno, colno, filename)
         self.source_object = source_object
+        self.dot = dot
         self.name = name
+        self.lpar = lpar
         self.args = args
+        self.rpar = rpar
 
 @dataclass(unsafe_hash=True)
 class FunctionNode(BaseNode):
 
     func_name: IdNode
+    lpar: SymbolNode
     args: ArgumentNode
+    rpar: SymbolNode
 
-    def __init__(self, filename: str, lineno: int, colno: int, end_lineno: int, end_colno: int, func_name: IdNode, args: ArgumentNode):
+    def __init__(self, filename: str, lineno: int, colno: int, end_lineno: int, end_colno: int,
+                 func_name: IdNode, lpar: SymbolNode, args: ArgumentNode, rpar: SymbolNode):
         super().__init__(lineno, colno, filename, end_lineno=end_lineno, end_colno=end_colno)
         self.func_name = func_name
+        self.lpar = lpar
         self.args = args
+        self.rpar = rpar
 
 
 @dataclass(unsafe_hash=True)
 class AssignmentNode(BaseNode):
 
     var_name: IdNode
+    operator: SymbolNode
     value: BaseNode
 
-    def __init__(self, filename: str, lineno: int, colno: int, var_name: IdNode, value: BaseNode):
+    def __init__(self, filename: str, lineno: int, colno: int,
+                 var_name: IdNode, operator: SymbolNode, value: BaseNode):
         super().__init__(lineno, colno, filename)
         self.var_name = var_name
+        self.operator = operator
         self.value = value
 
 
@@ -501,46 +550,61 @@ class AssignmentNode(BaseNode):
 class PlusAssignmentNode(BaseNode):
 
     var_name: IdNode
+    operator: SymbolNode
     value: BaseNode
 
-    def __init__(self, filename: str, lineno: int, colno: int, var_name: IdNode, value: BaseNode):
+    def __init__(self, filename: str, lineno: int, colno: int,
+                 var_name: IdNode, operator: SymbolNode, value: BaseNode):
         super().__init__(lineno, colno, filename)
         self.var_name = var_name
+        self.operator = operator
         self.value = value
 
 
 @dataclass(unsafe_hash=True)
 class ForeachClauseNode(BaseNode):
 
+    foreach_: SymbolNode = field(hash=False)
     varnames: T.List[IdNode] = field(hash=False)
+    commas: T.List[SymbolNode] = field(hash=False)
+    column: SymbolNode = field(hash=False)
     items: BaseNode
     block: CodeBlockNode
+    endforeach: SymbolNode = field(hash=False)
 
-    def __init__(self, token: Token, varnames: T.List[IdNode], items: BaseNode, block: CodeBlockNode):
-        super().__init__(token.lineno, token.colno, token.filename)
+    def __init__(self, foreach_: SymbolNode, varnames: T.List[IdNode], commas: T.List[SymbolNode], column: SymbolNode, items: BaseNode, block: CodeBlockNode, endforeach: SymbolNode):
+        super().__init__(foreach_.lineno, foreach_.colno, foreach_.filename)
+        self.foreach_ = foreach_
         self.varnames = varnames
+        self.commas = commas
+        self.column = column
         self.items = items
         self.block = block
+        self.endforeach = endforeach
 
 
 @dataclass(unsafe_hash=True)
 class IfNode(BaseNode):
 
+    if_: SymbolNode
     condition: BaseNode
     block: CodeBlockNode
 
-    def __init__(self, linenode: BaseNode, condition: BaseNode, block: CodeBlockNode):
+    def __init__(self, linenode: BaseNode, if_node: SymbolNode, condition: BaseNode, block: CodeBlockNode):
         super().__init__(linenode.lineno, linenode.colno, linenode.filename)
+        self.if_ = if_node
         self.condition = condition
         self.block = block
 
 @dataclass(unsafe_hash=True)
 class ElseNode(BaseNode):
 
+    else_: SymbolNode
     block: CodeBlockNode
 
-    def __init__(self, block: CodeBlockNode):
+    def __init__(self, else_: SymbolNode, block: CodeBlockNode):
         super().__init__(block.lineno, block.colno, block.filename)
+        self.else_ = else_
         self.block = block
 
 @dataclass(unsafe_hash=True)
@@ -548,30 +612,38 @@ class IfClauseNode(BaseNode):
 
     ifs: T.List[IfNode] = field(hash=False)
     elseblock: T.Union[EmptyNode, ElseNode]
+    endif: SymbolNode
 
     def __init__(self, linenode: BaseNode):
         super().__init__(linenode.lineno, linenode.colno, linenode.filename)
         self.ifs = []
         self.elseblock = EmptyNode(linenode.lineno, linenode.colno, linenode.filename)
+        self.endif = None
 
 @dataclass(unsafe_hash=True)
 class TestCaseClauseNode(BaseNode):
 
+    testcase: SymbolNode
     condition: BaseNode
     block: CodeBlockNode
+    endtestcase: SymbolNode
 
-    def __init__(self, condition: BaseNode, block: CodeBlockNode):
+    def __init__(self, testcase: SymbolNode, condition: BaseNode, block: CodeBlockNode, endtestcase: SymbolNode):
         super().__init__(condition.lineno, condition.colno, condition.filename)
+        self.testcase = testcase
         self.condition = condition
         self.block = block
+        self.endtestcase = endtestcase
 
 @dataclass(unsafe_hash=True)
 class UMinusNode(BaseNode):
 
+    operator: SymbolNode
     value: BaseNode
 
-    def __init__(self, current_location: Token, value: BaseNode):
+    def __init__(self, current_location: Token, operator: SymbolNode, value: BaseNode):
         super().__init__(current_location.lineno, current_location.colno, current_location.filename)
+        self.operator = operator
         self.value = value
 
 
@@ -579,23 +651,32 @@ class UMinusNode(BaseNode):
 class TernaryNode(BaseNode):
 
     condition: BaseNode
+    questionmark: SymbolNode
     trueblock: BaseNode
+    column: SymbolNode
     falseblock: BaseNode
 
-    def __init__(self, condition: BaseNode, trueblock: BaseNode, falseblock: BaseNode):
+    def __init__(self, condition: BaseNode, questionmark: SymbolNode, trueblock: BaseNode, column: SymbolNode, falseblock: BaseNode):
         super().__init__(condition.lineno, condition.colno, condition.filename)
         self.condition = condition
+        self.questionmark = questionmark
         self.trueblock = trueblock
+        self.column = column
         self.falseblock = falseblock
 
+
 @dataclass(unsafe_hash=True)
 class ParenthesizedNode(BaseNode):
 
+    lpar: SymbolNode = field(hash=False)
     inner: BaseNode
+    rpar: SymbolNode = field(hash=False)
 
-    def __init__(self, inner: BaseNode, lineno: int, colno: int, end_lineno: int, end_colno: int):
+    def __init__(self, lpar: SymbolNode, inner: BaseNode, rpar: SymbolNode, lineno: int, colno: int, end_lineno: int, end_colno: int):
         super().__init__(lineno, colno, inner.filename, end_lineno=end_lineno, end_colno=end_colno)
+        self.lpar = lpar
         self.inner = inner
+        self.rpar = rpar
 
 if T.TYPE_CHECKING:
     COMPARISONS = Literal['==', '!=', '<', '<=', '>=', '>', 'in', 'notin']
@@ -632,13 +713,19 @@ class Parser:
         self.stream = self.lexer.lex(filename)
         self.current: Token = Token('eof', '', 0, 0, 0, (0, 0), None)
         self.previous = self.current
+
         self.getsym()
         self.in_ternary = False
 
+    def create_node(self, node_type: T.Type[BaseNodeT], *args: T.Any, **kwargs: T.Any) -> BaseNodeT:
+        node = node_type(*args, **kwargs)
+        return node
+
     def getsym(self) -> None:
         self.previous = self.current
         try:
             self.current = next(self.stream)
+
         except StopIteration:
             self.current = Token('eof', '', self.current.line_start, self.current.lineno, self.current.colno + self.current.bytespan[1] - self.current.bytespan[0], (0, 0), None)
 
@@ -683,55 +770,69 @@ class Parser:
     def e1(self) -> BaseNode:
         left = self.e2()
         if self.accept('plusassign'):
+            operator = self.create_node(SymbolNode, self.previous)
             value = self.e1()
             if not isinstance(left, IdNode):
                 raise ParseException('Plusassignment target must be an id.', self.getline(), left.lineno, left.colno)
             assert isinstance(left.value, str)
-            return PlusAssignmentNode(left.filename, left.lineno, left.colno, left, value)
+            return self.create_node(PlusAssignmentNode, left.filename, left.lineno, left.colno, left, operator, value)
         elif self.accept('assign'):
+            operator = self.create_node(SymbolNode, self.previous)
             value = self.e1()
             if not isinstance(left, IdNode):
                 raise ParseException('Assignment target must be an id.',
                                      self.getline(), left.lineno, left.colno)
             assert isinstance(left.value, str)
-            return AssignmentNode(left.filename, left.lineno, left.colno, left, value)
+            return self.create_node(AssignmentNode, left.filename, left.lineno, left.colno, left, operator, value)
         elif self.accept('questionmark'):
             if self.in_ternary:
                 raise ParseException('Nested ternary operators are not allowed.',
                                      self.getline(), left.lineno, left.colno)
+
+            qm_node = self.create_node(SymbolNode, self.previous)
             self.in_ternary = True
             trueblock = self.e1()
             self.expect('colon')
+            column_node = self.create_node(SymbolNode, self.previous)
             falseblock = self.e1()
             self.in_ternary = False
-            return TernaryNode(left, trueblock, falseblock)
+            return self.create_node(TernaryNode, left, qm_node, trueblock, column_node, falseblock)
         return left
 
     def e2(self) -> BaseNode:
         left = self.e3()
         while self.accept('or'):
+            operator = self.create_node(SymbolNode, self.previous)
             if isinstance(left, EmptyNode):
                 raise ParseException('Invalid or clause.',
                                      self.getline(), left.lineno, left.colno)
-            left = OrNode(left, self.e3())
+            left = self.create_node(OrNode, left, operator, self.e3())
         return left
 
     def e3(self) -> BaseNode:
         left = self.e4()
         while self.accept('and'):
+            operator = self.create_node(SymbolNode, self.previous)
             if isinstance(left, EmptyNode):
                 raise ParseException('Invalid and clause.',
                                      self.getline(), left.lineno, left.colno)
-            left = AndNode(left, self.e4())
+            left = self.create_node(AndNode, left, operator, self.e4())
         return left
 
     def e4(self) -> BaseNode:
         left = self.e5()
         for nodename, operator_type in comparison_map.items():
             if self.accept(nodename):
-                return ComparisonNode(operator_type, left, self.e5())
-        if self.accept('not') and self.accept('in'):
-            return ComparisonNode('notin', left, self.e5())
+                operator = self.create_node(SymbolNode, self.previous)
+                return self.create_node(ComparisonNode, operator_type, left, operator, self.e5())
+        if self.accept('not'):
+            not_token = self.previous
+            if self.accept('in'):
+                in_token = self.previous
+                not_token.bytespan = (not_token.bytespan[0], in_token.bytespan[1])
+                not_token.value += in_token.value
+                operator = self.create_node(SymbolNode, not_token)
+                return self.create_node(ComparisonNode, 'notin', left, operator, self.e5())
         return left
 
     def e5(self) -> BaseNode:
@@ -746,7 +847,8 @@ class Parser:
         while True:
             op = self.accept_any(tuple(op_map.keys()))
             if op:
-                left = ArithmeticNode(op_map[op], left, self.e5muldiv())
+                operator = self.create_node(SymbolNode, self.previous)
+                left = self.create_node(ArithmeticNode, op_map[op], left, operator, self.e5muldiv())
             else:
                 break
         return left
@@ -761,29 +863,34 @@ class Parser:
         while True:
             op = self.accept_any(tuple(op_map.keys()))
             if op:
-                left = ArithmeticNode(op_map[op], left, self.e6())
+                operator = self.create_node(SymbolNode, self.previous)
+                left = self.create_node(ArithmeticNode, op_map[op], left, operator, self.e6())
             else:
                 break
         return left
 
     def e6(self) -> BaseNode:
         if self.accept('not'):
-            return NotNode(self.current, self.e7())
+            operator = self.create_node(SymbolNode, self.previous)
+            return self.create_node(NotNode, self.current, operator, self.e7())
         if self.accept('dash'):
-            return UMinusNode(self.current, self.e7())
+            operator = self.create_node(SymbolNode, self.previous)
+            return self.create_node(UMinusNode, self.current, operator, self.e7())
         return self.e7()
 
     def e7(self) -> BaseNode:
         left = self.e8()
         block_start = self.current
         if self.accept('lparen'):
+            lpar = self.create_node(SymbolNode, block_start)
             args = self.args()
             self.block_expect('rparen', block_start)
+            rpar = self.create_node(SymbolNode, self.previous)
             if not isinstance(left, IdNode):
                 raise ParseException('Function call must be applied to plain id',
                                      self.getline(), left.lineno, left.colno)
             assert isinstance(left.value, str)
-            left = FunctionNode(left.filename, left.lineno, left.colno, self.current.lineno, self.current.colno, left, args)
+            left = self.create_node(FunctionNode, left.filename, left.lineno, left.colno, self.current.lineno, self.current.colno, left, lpar, args, rpar)
         go_again = True
         while go_again:
             go_again = False
@@ -798,17 +905,23 @@ class Parser:
     def e8(self) -> BaseNode:
         block_start = self.current
         if self.accept('lparen'):
+            lpar = self.create_node(SymbolNode, block_start)
             e = self.statement()
             self.block_expect('rparen', block_start)
-            return ParenthesizedNode(e, block_start.lineno, block_start.colno, self.current.lineno, self.current.colno)
+            rpar = self.create_node(SymbolNode, self.previous)
+            return ParenthesizedNode(lpar, e, rpar, block_start.lineno, block_start.colno, self.current.lineno, self.current.colno)
         elif self.accept('lbracket'):
+            lbracket = self.create_node(SymbolNode, block_start)
             args = self.args()
             self.block_expect('rbracket', block_start)
-            return ArrayNode(args, block_start.lineno, block_start.colno, self.current.lineno, self.current.colno)
+            rbracket = self.create_node(SymbolNode, self.previous)
+            return self.create_node(ArrayNode, lbracket, args, rbracket, block_start.lineno, block_start.colno, self.current.lineno, self.current.colno)
         elif self.accept('lcurl'):
+            lcurl = self.create_node(SymbolNode, block_start)
             key_values = self.key_values()
             self.block_expect('rcurl', block_start)
-            return DictNode(key_values, block_start.lineno, block_start.colno, self.current.lineno, self.current.colno)
+            rcurl = self.create_node(SymbolNode, self.previous)
+            return self.create_node(DictNode, lcurl, key_values, rcurl, block_start.lineno, block_start.colno, self.current.lineno, self.current.colno)
         else:
             return self.e9()
 
@@ -816,34 +929,35 @@ class Parser:
         t = self.current
         if self.accept('true'):
             t.value = True
-            return BooleanNode(t)
+            return self.create_node(BooleanNode, t)
         if self.accept('false'):
             t.value = False
-            return BooleanNode(t)
+            return self.create_node(BooleanNode, t)
         if self.accept('id'):
-            return IdNode(t)
+            return self.create_node(IdNode, t)
         if self.accept('number'):
-            return NumberNode(t)
+            return self.create_node(NumberNode, t)
         if self.accept('string'):
-            return StringNode(t)
+            return self.create_node(StringNode, t)
         if self.accept('fstring'):
-            return FormatStringNode(t)
+            return self.create_node(FormatStringNode, t)
         if self.accept('multiline_string'):
-            return MultilineStringNode(t)
+            return self.create_node(MultilineStringNode, t)
         if self.accept('multiline_fstring'):
-            return MultilineFormatStringNode(t)
+            return self.create_node(MultilineFormatStringNode, t)
         return EmptyNode(self.current.lineno, self.current.colno, self.current.filename)
 
     def key_values(self) -> ArgumentNode:
         s = self.statement()
-        a = ArgumentNode(self.current)
+        a = self.create_node(ArgumentNode, self.current)
 
         while not isinstance(s, EmptyNode):
             if self.accept('colon'):
+                a.columns.append(self.create_node(SymbolNode, self.previous))
                 a.set_kwarg_no_check(s, self.statement())
                 if not self.accept('comma'):
                     return a
-                a.commas.append(self.previous)
+                a.commas.append(self.create_node(SymbolNode, self.previous))
             else:
                 raise ParseException('Only key:value pairs are valid in dict construction.',
                                      self.getline(), s.lineno, s.colno)
@@ -852,20 +966,21 @@ class Parser:
 
     def args(self) -> ArgumentNode:
         s = self.statement()
-        a = ArgumentNode(self.current)
+        a = self.create_node(ArgumentNode, self.current)
 
         while not isinstance(s, EmptyNode):
             if self.accept('comma'):
-                a.commas.append(self.previous)
+                a.commas.append(self.create_node(SymbolNode, self.previous))
                 a.append(s)
             elif self.accept('colon'):
+                a.columns.append(self.create_node(SymbolNode, self.previous))
                 if not isinstance(s, IdNode):
                     raise ParseException('Dictionary key must be a plain identifier.',
                                          self.getline(), s.lineno, s.colno)
                 a.set_kwarg(s, self.statement())
                 if not self.accept('comma'):
                     return a
-                a.commas.append(self.previous)
+                a.commas.append(self.create_node(SymbolNode, self.previous))
             else:
                 a.append(s)
                 return a
@@ -873,6 +988,7 @@ class Parser:
         return a
 
     def method_call(self, source_object: BaseNode) -> MethodNode:
+        dot = self.create_node(SymbolNode, self.previous)
         methodname = self.e9()
         if not isinstance(methodname, IdNode):
             if isinstance(source_object, NumberNode) and isinstance(methodname, NumberNode):
@@ -882,63 +998,78 @@ class Parser:
                                  self.getline(), self.current.lineno, self.current.colno)
         assert isinstance(methodname.value, str)
         self.expect('lparen')
+        lpar = self.create_node(SymbolNode, self.previous)
         args = self.args()
+        rpar = self.create_node(SymbolNode, self.current)
         self.expect('rparen')
-        method = MethodNode(methodname.filename, methodname.lineno, methodname.colno, source_object, methodname, args)
+        method = self.create_node(MethodNode, methodname.filename, methodname.lineno, methodname.colno,
+                                  source_object, dot, methodname, lpar, args, rpar)
         if self.accept('dot'):
             return self.method_call(method)
         return method
 
     def index_call(self, source_object: BaseNode) -> IndexNode:
+        lbracket = self.create_node(SymbolNode, self.previous)
         index_statement = self.statement()
         self.expect('rbracket')
-        return IndexNode(source_object, index_statement)
+        rbracket = self.create_node(SymbolNode, self.previous)
+        return self.create_node(IndexNode, source_object, lbracket, index_statement, rbracket)
 
     def foreachblock(self) -> ForeachClauseNode:
+        foreach_ = self.create_node(SymbolNode, self.previous)
         self.expect('id')
         assert isinstance(self.previous.value, str)
-        varname = self.previous
-        varnames = [IdNode(self.previous)]
+        varnames = [self.create_node(IdNode, self.previous)]
+        commas = []
 
         if self.accept('comma'):
+            commas.append(self.create_node(SymbolNode, self.previous))
             self.expect('id')
             assert isinstance(self.previous.value, str)
-            varnames.append(IdNode(self.previous))
+            varnames.append(self.create_node(IdNode, self.previous))
 
         self.expect('colon')
+        column = self.create_node(SymbolNode, self.previous)
         items = self.statement()
         block = self.codeblock()
-        return ForeachClauseNode(varname, varnames, items, block)
+        endforeach = self.create_node(SymbolNode, self.current)
+        return self.create_node(ForeachClauseNode, foreach_, varnames, commas, column, items, block, endforeach)
 
     def ifblock(self) -> IfClauseNode:
+        if_node = self.create_node(SymbolNode, self.previous)
         condition = self.statement()
-        clause = IfClauseNode(condition)
+        clause = self.create_node(IfClauseNode, condition)
         self.expect('eol')
         block = self.codeblock()
-        clause.ifs.append(IfNode(clause, condition, block))
+        clause.ifs.append(self.create_node(IfNode, clause, if_node, condition, block))
         self.elseifblock(clause)
         clause.elseblock = self.elseblock()
+        clause.endif = self.create_node(SymbolNode, self.current)
         return clause
 
     def elseifblock(self, clause: IfClauseNode) -> None:
         while self.accept('elif'):
+            elif_ = self.create_node(SymbolNode, self.previous)
             s = self.statement()
             self.expect('eol')
             b = self.codeblock()
-            clause.ifs.append(IfNode(s, s, b))
+            clause.ifs.append(self.create_node(IfNode, s, elif_, s, b))
 
     def elseblock(self) -> T.Union[ElseNode, EmptyNode]:
         if self.accept('else'):
+            else_ = self.create_node(SymbolNode, self.previous)
             self.expect('eol')
             block = self.codeblock()
-            return ElseNode(block)
+            return ElseNode(else_, block)
         return EmptyNode(self.current.lineno, self.current.colno, self.current.filename)
 
     def testcaseblock(self) -> TestCaseClauseNode:
+        testcase = self.create_node(SymbolNode, self.previous)
         condition = self.statement()
         self.expect('eol')
         block = self.codeblock()
-        return TestCaseClauseNode(condition, block)
+        endtestcase = SymbolNode(self.current)
+        return self.create_node(TestCaseClauseNode, testcase, condition, block, endtestcase)
 
     def line(self) -> BaseNode:
         block_start = self.current
@@ -953,9 +1084,9 @@ class Parser:
             self.block_expect('endforeach', block_start)
             return forblock
         if self.accept('continue'):
-            return ContinueNode(self.current)
+            return self.create_node(ContinueNode, self.current)
         if self.accept('break'):
-            return BreakNode(self.current)
+            return self.create_node(BreakNode, self.current)
         if self.lexer.in_unit_test and self.accept('testcase'):
             block = self.testcaseblock()
             self.block_expect('endtestcase', block_start)
@@ -963,15 +1094,20 @@ class Parser:
         return self.statement()
 
     def codeblock(self) -> CodeBlockNode:
-        block = CodeBlockNode(self.current)
+        block = self.create_node(CodeBlockNode, self.current)
         cond = True
+
         try:
             while cond:
                 curline = self.line()
+
                 if not isinstance(curline, EmptyNode):
                     block.lines.append(curline)
+
                 cond = self.accept('eol')
+
         except ParseException as e:
             e.ast = block
             raise
+
         return block
diff --git a/mesonbuild/rewriter.py b/mesonbuild/rewriter.py
index af3210c..64eb2f2 100644
--- a/mesonbuild/rewriter.py
+++ b/mesonbuild/rewriter.py
@@ -28,7 +28,7 @@ from .ast import IntrospectionInterpreter, BUILD_TARGET_FUNCTIONS, AstConditionL
 from mesonbuild.mesonlib import MesonException, setup_vsenv
 from . import mlog, environment
 from functools import wraps
-from .mparser import Token, ArrayNode, ArgumentNode, AssignmentNode, BaseStringNode, BooleanNode, ElementaryNode, IdNode, FunctionNode, StringNode
+from .mparser import Token, ArrayNode, ArgumentNode, AssignmentNode, BaseStringNode, BooleanNode, ElementaryNode, IdNode, FunctionNode, StringNode, SymbolNode
 import json, os, re, sys
 import typing as T
 
@@ -104,6 +104,9 @@ class RequiredKeys:
 
         return wrapped
 
+def _symbol(val: str) -> SymbolNode:
+    return SymbolNode(Token('', '', 0, 0, 0, (0, 0), val))
+
 class MTypeBase:
     def __init__(self, node: T.Optional[BaseNode] = None):
         if node is None:
@@ -189,7 +192,7 @@ class MTypeList(MTypeBase):
         super().__init__(node)
 
     def _new_node(self):
-        return ArrayNode(ArgumentNode(Token('', '', 0, 0, 0, None, '')), 0, 0, 0, 0)
+        return ArrayNode(_symbol('['), ArgumentNode(Token('', '', 0, 0, 0, None, '')), _symbol(']'), 0, 0, 0, 0)
 
     def _new_element_node(self, value):
         # Overwrite in derived class
@@ -728,7 +731,7 @@ class Rewriter:
                     node = tgt_function.args.kwargs[extra_files_key]
                 except StopIteration:
                     # Target has no extra_files kwarg, create one
-                    node = ArrayNode(ArgumentNode(Token('', tgt_function.filename, 0, 0, 0, None, '[]')), tgt_function.end_lineno, tgt_function.end_colno, tgt_function.end_lineno, tgt_function.end_colno)
+                    node = ArrayNode(_symbol('['), ArgumentNode(Token('', tgt_function.filename, 0, 0, 0, None, '[]')), _symbol(']'), tgt_function.end_lineno, tgt_function.end_colno, tgt_function.end_lineno, tgt_function.end_colno)
                     tgt_function.args.kwargs[IdNode(Token('string', tgt_function.filename, 0, 0, 0, None, 'extra_files'))] = node
                     mark_array = False
                     if tgt_function not in self.modified_nodes:
@@ -812,17 +815,17 @@ class Rewriter:
 
             # Build src list
             src_arg_node = ArgumentNode(Token('string', filename, 0, 0, 0, None, ''))
-            src_arr_node = ArrayNode(src_arg_node, 0, 0, 0, 0)
+            src_arr_node = ArrayNode(_symbol('['), src_arg_node, _symbol(']'), 0, 0, 0, 0)
             src_far_node = ArgumentNode(Token('string', filename, 0, 0, 0, None, ''))
-            src_fun_node = FunctionNode(filename, 0, 0, 0, 0, IdNode(Token('id', filename, 0, 0, 0, (0, 0), 'files')), src_far_node)
-            src_ass_node = AssignmentNode(filename, 0, 0, IdNode(Token('id', filename, 0, 0, 0, (0, 0), source_id)), src_fun_node)
+            src_fun_node = FunctionNode(filename, 0, 0, 0, 0, IdNode(Token('id', filename, 0, 0, 0, (0, 0), 'files')), _symbol('('), src_far_node, _symbol(')'))
+            src_ass_node = AssignmentNode(filename, 0, 0, IdNode(Token('id', filename, 0, 0, 0, (0, 0), source_id)), _symbol('='), src_fun_node)
             src_arg_node.arguments = [StringNode(Token('string', filename, 0, 0, 0, None, x)) for x in cmd['sources']]
             src_far_node.arguments = [src_arr_node]
 
             # Build target
             tgt_arg_node = ArgumentNode(Token('string', filename, 0, 0, 0, None, ''))
-            tgt_fun_node = FunctionNode(filename, 0, 0, 0, 0, IdNode(Token('id', filename, 0, 0, 0, (0, 0), cmd['target_type'])), tgt_arg_node)
-            tgt_ass_node = AssignmentNode(filename, 0, 0, IdNode(Token('id', filename, 0, 0, 0, (0, 0), target_id)), tgt_fun_node)
+            tgt_fun_node = FunctionNode(filename, 0, 0, 0, 0, IdNode(Token('id', filename, 0, 0, 0, (0, 0), cmd['target_type'])), _symbol('('), tgt_arg_node, _symbol(')'))
+            tgt_ass_node = AssignmentNode(filename, 0, 0, IdNode(Token('id', filename, 0, 0, 0, (0, 0), target_id)), _symbol('='), tgt_fun_node)
             tgt_arg_node.arguments = [
                 StringNode(Token('string', filename, 0, 0, 0, None, cmd['target'])),
                 IdNode(Token('string', filename, 0, 0, 0, None, source_id))