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|
"""
sphinx.domains.c
~~~~~~~~~~~~~~~~
The C language domain.
:copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
import re
from typing import (
Any, Callable, Dict, Generator, Iterator, List, Type, Tuple, Union
)
from typing import cast
from docutils import nodes
from docutils.nodes import Element, Node, TextElement, system_message
from sphinx import addnodes
from sphinx.addnodes import pending_xref
from sphinx.application import Sphinx
from sphinx.builders import Builder
from sphinx.directives import ObjectDescription
from sphinx.domains import Domain, ObjType
from sphinx.environment import BuildEnvironment
from sphinx.locale import _, __
from sphinx.roles import SphinxRole, XRefRole
from sphinx.util import logging
from sphinx.util.cfamily import (
NoOldIdError, ASTBaseBase, verify_description_mode, StringifyTransform,
BaseParser, DefinitionError, UnsupportedMultiCharacterCharLiteral,
identifier_re, anon_identifier_re, integer_literal_re, octal_literal_re,
hex_literal_re, binary_literal_re, integers_literal_suffix_re,
float_literal_re, float_literal_suffix_re,
char_literal_re
)
from sphinx.util.docfields import Field, TypedField
from sphinx.util.docutils import SphinxDirective
from sphinx.util.nodes import make_refnode
logger = logging.getLogger(__name__)
# https://en.cppreference.com/w/c/keyword
_keywords = [
'auto', 'break', 'case', 'char', 'const', 'continue', 'default', 'do', 'double',
'else', 'enum', 'extern', 'float', 'for', 'goto', 'if', 'inline', 'int', 'long',
'register', 'restrict', 'return', 'short', 'signed', 'sizeof', 'static', 'struct',
'switch', 'typedef', 'union', 'unsigned', 'void', 'volatile', 'while',
'_Alignas', 'alignas', '_Alignof', 'alignof', '_Atomic', '_Bool', 'bool',
'_Complex', 'complex', '_Generic', '_Imaginary', 'imaginary',
'_Noreturn', 'noreturn', '_Static_assert', 'static_assert',
'_Thread_local', 'thread_local',
]
# these are ordered by preceedence
_expression_bin_ops = [
['||', 'or'],
['&&', 'and'],
['|', 'bitor'],
['^', 'xor'],
['&', 'bitand'],
['==', '!=', 'not_eq'],
['<=', '>=', '<', '>'],
['<<', '>>'],
['+', '-'],
['*', '/', '%'],
['.*', '->*']
]
_expression_unary_ops = ["++", "--", "*", "&", "+", "-", "!", "not", "~", "compl"]
_expression_assignment_ops = ["=", "*=", "/=", "%=", "+=", "-=",
">>=", "<<=", "&=", "and_eq", "^=", "xor_eq", "|=", "or_eq"]
_max_id = 1
_id_prefix = [None, 'c.', 'Cv2.']
# Ids are used in lookup keys which are used across pickled files,
# so when _max_id changes, make sure to update the ENV_VERSION.
_string_re = re.compile(r"[LuU8]?('([^'\\]*(?:\\.[^'\\]*)*)'"
r'|"([^"\\]*(?:\\.[^"\\]*)*)")', re.S)
class _DuplicateSymbolError(Exception):
def __init__(self, symbol: "Symbol", declaration: "ASTDeclaration") -> None:
assert symbol
assert declaration
self.symbol = symbol
self.declaration = declaration
def __str__(self) -> str:
return "Internal C duplicate symbol error:\n%s" % self.symbol.dump(0)
class ASTBase(ASTBaseBase):
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
raise NotImplementedError(repr(self))
# Names
################################################################################
class ASTIdentifier(ASTBaseBase):
def __init__(self, identifier: str) -> None:
assert identifier is not None
assert len(identifier) != 0
self.identifier = identifier
def is_anon(self) -> bool:
return self.identifier[0] == '@'
# and this is where we finally make a difference between __str__ and the display string
def __str__(self) -> str:
return self.identifier
def get_display_string(self) -> str:
return "[anonymous]" if self.is_anon() else self.identifier
def describe_signature(self, signode: TextElement, mode: str, env: "BuildEnvironment",
prefix: str, symbol: "Symbol") -> None:
# note: slightly different signature of describe_signature due to the prefix
verify_description_mode(mode)
if mode == 'markType':
targetText = prefix + self.identifier
pnode = addnodes.pending_xref('', refdomain='c',
reftype='identifier',
reftarget=targetText, modname=None,
classname=None)
# key = symbol.get_lookup_key()
# pnode['c:parent_key'] = key
if self.is_anon():
pnode += nodes.strong(text="[anonymous]")
else:
pnode += nodes.Text(self.identifier)
signode += pnode
elif mode == 'lastIsName':
if self.is_anon():
signode += nodes.strong(text="[anonymous]")
else:
signode += addnodes.desc_name(self.identifier, self.identifier)
elif mode == 'noneIsName':
if self.is_anon():
signode += nodes.strong(text="[anonymous]")
else:
signode += nodes.Text(self.identifier)
else:
raise Exception('Unknown description mode: %s' % mode)
class ASTNestedName(ASTBase):
def __init__(self, names: List[ASTIdentifier], rooted: bool) -> None:
assert len(names) > 0
self.names = names
self.rooted = rooted
@property
def name(self) -> "ASTNestedName":
return self
def get_id(self, version: int) -> str:
return '.'.join(str(n) for n in self.names)
def _stringify(self, transform: StringifyTransform) -> str:
res = '.'.join(transform(n) for n in self.names)
if self.rooted:
return '.' + res
else:
return res
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
verify_description_mode(mode)
# just print the name part, with template args, not template params
if mode == 'noneIsName':
signode += nodes.Text(str(self))
elif mode == 'param':
name = str(self)
signode += nodes.emphasis(name, name)
elif mode == 'markType' or mode == 'lastIsName' or mode == 'markName':
# Each element should be a pending xref targeting the complete
# prefix.
prefix = ''
first = True
names = self.names[:-1] if mode == 'lastIsName' else self.names
# If lastIsName, then wrap all of the prefix in a desc_addname,
# else append directly to signode.
# TODO: also for C?
# NOTE: Breathe previously relied on the prefix being in the desc_addname node,
# so it can remove it in inner declarations.
dest = signode
if mode == 'lastIsName':
dest = addnodes.desc_addname()
if self.rooted:
prefix += '.'
if mode == 'lastIsName' and len(names) == 0:
signode += nodes.Text('.')
else:
dest += nodes.Text('.')
for i in range(len(names)):
ident = names[i]
if not first:
dest += nodes.Text('.')
prefix += '.'
first = False
txt_ident = str(ident)
if txt_ident != '':
ident.describe_signature(dest, 'markType', env, prefix, symbol)
prefix += txt_ident
if mode == 'lastIsName':
if len(self.names) > 1:
dest += addnodes.desc_addname('.', '.')
signode += dest
self.names[-1].describe_signature(signode, mode, env, '', symbol)
else:
raise Exception('Unknown description mode: %s' % mode)
################################################################################
# Expressions
################################################################################
class ASTExpression(ASTBase):
pass
# Primary expressions
################################################################################
class ASTLiteral(ASTExpression):
pass
class ASTBooleanLiteral(ASTLiteral):
def __init__(self, value: bool) -> None:
self.value = value
def _stringify(self, transform: StringifyTransform) -> str:
if self.value:
return 'true'
else:
return 'false'
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
signode.append(nodes.Text(str(self)))
class ASTNumberLiteral(ASTLiteral):
def __init__(self, data: str) -> None:
self.data = data
def _stringify(self, transform: StringifyTransform) -> str:
return self.data
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
txt = str(self)
signode.append(nodes.Text(txt, txt))
class ASTCharLiteral(ASTLiteral):
def __init__(self, prefix: str, data: str) -> None:
self.prefix = prefix # may be None when no prefix
self.data = data
decoded = data.encode().decode('unicode-escape')
if len(decoded) == 1:
self.value = ord(decoded)
else:
raise UnsupportedMultiCharacterCharLiteral(decoded)
def _stringify(self, transform: StringifyTransform) -> str:
if self.prefix is None:
return "'" + self.data + "'"
else:
return self.prefix + "'" + self.data + "'"
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
txt = str(self)
signode.append(nodes.Text(txt, txt))
class ASTStringLiteral(ASTLiteral):
def __init__(self, data: str) -> None:
self.data = data
def _stringify(self, transform: StringifyTransform) -> str:
return self.data
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
txt = str(self)
signode.append(nodes.Text(txt, txt))
class ASTIdExpression(ASTExpression):
def __init__(self, name: ASTNestedName):
# note: this class is basically to cast a nested name as an expression
self.name = name
def _stringify(self, transform: StringifyTransform) -> str:
return transform(self.name)
def get_id(self, version: int) -> str:
return self.name.get_id(version)
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
self.name.describe_signature(signode, mode, env, symbol)
class ASTParenExpr(ASTExpression):
def __init__(self, expr):
self.expr = expr
def _stringify(self, transform: StringifyTransform) -> str:
return '(' + transform(self.expr) + ')'
def get_id(self, version: int) -> str:
return self.expr.get_id(version)
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
signode.append(nodes.Text('(', '('))
self.expr.describe_signature(signode, mode, env, symbol)
signode.append(nodes.Text(')', ')'))
# Postfix expressions
################################################################################
class ASTPostfixOp(ASTBase):
pass
class ASTPostfixCallExpr(ASTPostfixOp):
def __init__(self, lst: Union["ASTParenExprList", "ASTBracedInitList"]) -> None:
self.lst = lst
def _stringify(self, transform: StringifyTransform) -> str:
return transform(self.lst)
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
self.lst.describe_signature(signode, mode, env, symbol)
class ASTPostfixArray(ASTPostfixOp):
def __init__(self, expr: ASTExpression) -> None:
self.expr = expr
def _stringify(self, transform: StringifyTransform) -> str:
return '[' + transform(self.expr) + ']'
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
signode.append(nodes.Text('['))
self.expr.describe_signature(signode, mode, env, symbol)
signode.append(nodes.Text(']'))
class ASTPostfixInc(ASTPostfixOp):
def _stringify(self, transform: StringifyTransform) -> str:
return '++'
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
signode.append(nodes.Text('++'))
class ASTPostfixDec(ASTPostfixOp):
def _stringify(self, transform: StringifyTransform) -> str:
return '--'
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
signode.append(nodes.Text('--'))
class ASTPostfixMember(ASTPostfixOp):
def __init__(self, name):
self.name = name
def _stringify(self, transform: StringifyTransform) -> str:
return '.' + transform(self.name)
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
signode.append(nodes.Text('.'))
self.name.describe_signature(signode, 'noneIsName', env, symbol)
class ASTPostfixMemberOfPointer(ASTPostfixOp):
def __init__(self, name):
self.name = name
def _stringify(self, transform: StringifyTransform) -> str:
return '->' + transform(self.name)
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
signode.append(nodes.Text('->'))
self.name.describe_signature(signode, 'noneIsName', env, symbol)
class ASTPostfixExpr(ASTExpression):
def __init__(self, prefix: ASTExpression, postFixes: List[ASTPostfixOp]):
self.prefix = prefix
self.postFixes = postFixes
def _stringify(self, transform: StringifyTransform) -> str:
res = [transform(self.prefix)]
for p in self.postFixes:
res.append(transform(p))
return ''.join(res)
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
self.prefix.describe_signature(signode, mode, env, symbol)
for p in self.postFixes:
p.describe_signature(signode, mode, env, symbol)
# Unary expressions
################################################################################
class ASTUnaryOpExpr(ASTExpression):
def __init__(self, op: str, expr: ASTExpression):
self.op = op
self.expr = expr
def _stringify(self, transform: StringifyTransform) -> str:
if self.op[0] in 'cn':
return self.op + " " + transform(self.expr)
else:
return self.op + transform(self.expr)
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
signode.append(nodes.Text(self.op))
if self.op[0] in 'cn':
signode.append(nodes.Text(" "))
self.expr.describe_signature(signode, mode, env, symbol)
class ASTSizeofType(ASTExpression):
def __init__(self, typ):
self.typ = typ
def _stringify(self, transform: StringifyTransform) -> str:
return "sizeof(" + transform(self.typ) + ")"
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
signode.append(nodes.Text('sizeof('))
self.typ.describe_signature(signode, mode, env, symbol)
signode.append(nodes.Text(')'))
class ASTSizeofExpr(ASTExpression):
def __init__(self, expr: ASTExpression):
self.expr = expr
def _stringify(self, transform: StringifyTransform) -> str:
return "sizeof " + transform(self.expr)
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
signode.append(nodes.Text('sizeof '))
self.expr.describe_signature(signode, mode, env, symbol)
class ASTAlignofExpr(ASTExpression):
def __init__(self, typ: "ASTType"):
self.typ = typ
def _stringify(self, transform: StringifyTransform) -> str:
return "alignof(" + transform(self.typ) + ")"
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
signode.append(nodes.Text('alignof('))
self.typ.describe_signature(signode, mode, env, symbol)
signode.append(nodes.Text(')'))
# Other expressions
################################################################################
class ASTCastExpr(ASTExpression):
def __init__(self, typ: "ASTType", expr: ASTExpression):
self.typ = typ
self.expr = expr
def _stringify(self, transform: StringifyTransform) -> str:
res = ['(']
res.append(transform(self.typ))
res.append(')')
res.append(transform(self.expr))
return ''.join(res)
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
signode.append(nodes.Text('('))
self.typ.describe_signature(signode, mode, env, symbol)
signode.append(nodes.Text(')'))
self.expr.describe_signature(signode, mode, env, symbol)
class ASTBinOpExpr(ASTBase):
def __init__(self, exprs: List[ASTExpression], ops: List[str]):
assert len(exprs) > 0
assert len(exprs) == len(ops) + 1
self.exprs = exprs
self.ops = ops
def _stringify(self, transform: StringifyTransform) -> str:
res = []
res.append(transform(self.exprs[0]))
for i in range(1, len(self.exprs)):
res.append(' ')
res.append(self.ops[i - 1])
res.append(' ')
res.append(transform(self.exprs[i]))
return ''.join(res)
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
self.exprs[0].describe_signature(signode, mode, env, symbol)
for i in range(1, len(self.exprs)):
signode.append(nodes.Text(' '))
signode.append(nodes.Text(self.ops[i - 1]))
signode.append(nodes.Text(' '))
self.exprs[i].describe_signature(signode, mode, env, symbol)
class ASTAssignmentExpr(ASTExpression):
def __init__(self, exprs: List[ASTExpression], ops: List[str]):
assert len(exprs) > 0
assert len(exprs) == len(ops) + 1
self.exprs = exprs
self.ops = ops
def _stringify(self, transform: StringifyTransform) -> str:
res = []
res.append(transform(self.exprs[0]))
for i in range(1, len(self.exprs)):
res.append(' ')
res.append(self.ops[i - 1])
res.append(' ')
res.append(transform(self.exprs[i]))
return ''.join(res)
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
self.exprs[0].describe_signature(signode, mode, env, symbol)
for i in range(1, len(self.exprs)):
signode.append(nodes.Text(' '))
signode.append(nodes.Text(self.ops[i - 1]))
signode.append(nodes.Text(' '))
self.exprs[i].describe_signature(signode, mode, env, symbol)
class ASTFallbackExpr(ASTExpression):
def __init__(self, expr: str):
self.expr = expr
def _stringify(self, transform: StringifyTransform) -> str:
return self.expr
def get_id(self, version: int) -> str:
return str(self.expr)
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
signode += nodes.Text(self.expr)
################################################################################
# Types
################################################################################
class ASTTrailingTypeSpec(ASTBase):
pass
class ASTTrailingTypeSpecFundamental(ASTTrailingTypeSpec):
def __init__(self, name: str) -> None:
self.name = name
def _stringify(self, transform: StringifyTransform) -> str:
return self.name
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
signode += nodes.Text(str(self.name))
class ASTTrailingTypeSpecName(ASTTrailingTypeSpec):
def __init__(self, prefix: str, nestedName: ASTNestedName) -> None:
self.prefix = prefix
self.nestedName = nestedName
@property
def name(self) -> ASTNestedName:
return self.nestedName
def _stringify(self, transform: StringifyTransform) -> str:
res = []
if self.prefix:
res.append(self.prefix)
res.append(' ')
res.append(transform(self.nestedName))
return ''.join(res)
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
if self.prefix:
signode += addnodes.desc_annotation(self.prefix, self.prefix)
signode += nodes.Text(' ')
self.nestedName.describe_signature(signode, mode, env, symbol=symbol)
class ASTFunctionParameter(ASTBase):
def __init__(self, arg: "ASTTypeWithInit", ellipsis: bool = False) -> None:
self.arg = arg
self.ellipsis = ellipsis
def _stringify(self, transform: StringifyTransform) -> str:
if self.ellipsis:
return '...'
else:
return transform(self.arg)
def describe_signature(self, signode: Any, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
verify_description_mode(mode)
if self.ellipsis:
signode += nodes.Text('...')
else:
self.arg.describe_signature(signode, mode, env, symbol=symbol)
class ASTParameters(ASTBase):
def __init__(self, args: List[ASTFunctionParameter]) -> None:
self.args = args
@property
def function_params(self) -> List[ASTFunctionParameter]:
return self.args
def _stringify(self, transform: StringifyTransform) -> str:
res = []
res.append('(')
first = True
for a in self.args:
if not first:
res.append(', ')
first = False
res.append(str(a))
res.append(')')
return ''.join(res)
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
verify_description_mode(mode)
paramlist = addnodes.desc_parameterlist()
for arg in self.args:
param = addnodes.desc_parameter('', '', noemph=True)
if mode == 'lastIsName': # i.e., outer-function params
arg.describe_signature(param, 'param', env, symbol=symbol)
else:
arg.describe_signature(param, 'markType', env, symbol=symbol)
paramlist += param
signode += paramlist
class ASTDeclSpecsSimple(ASTBaseBase):
def __init__(self, storage: str, threadLocal: str, inline: bool,
restrict: bool, volatile: bool, const: bool, attrs: List[Any]) -> None:
self.storage = storage
self.threadLocal = threadLocal
self.inline = inline
self.restrict = restrict
self.volatile = volatile
self.const = const
self.attrs = attrs
def mergeWith(self, other: "ASTDeclSpecsSimple") -> "ASTDeclSpecsSimple":
if not other:
return self
return ASTDeclSpecsSimple(self.storage or other.storage,
self.threadLocal or other.threadLocal,
self.inline or other.inline,
self.volatile or other.volatile,
self.const or other.const,
self.restrict or other.restrict,
self.attrs + other.attrs)
def _stringify(self, transform: StringifyTransform) -> str:
res = [] # type: List[str]
res.extend(transform(attr) for attr in self.attrs)
if self.storage:
res.append(self.storage)
if self.threadLocal:
res.append(self.threadLocal)
if self.inline:
res.append('inline')
if self.restrict:
res.append('restrict')
if self.volatile:
res.append('volatile')
if self.const:
res.append('const')
return ' '.join(res)
def describe_signature(self, modifiers: List[Node]) -> None:
def _add(modifiers: List[Node], text: str) -> None:
if len(modifiers) > 0:
modifiers.append(nodes.Text(' '))
modifiers.append(addnodes.desc_annotation(text, text))
for attr in self.attrs:
if len(modifiers) > 0:
modifiers.append(nodes.Text(' '))
modifiers.append(attr.describe_signature(modifiers))
if self.storage:
_add(modifiers, self.storage)
if self.threadLocal:
_add(modifiers, self.threadLocal)
if self.inline:
_add(modifiers, 'inline')
if self.restrict:
_add(modifiers, 'restrict')
if self.volatile:
_add(modifiers, 'volatile')
if self.const:
_add(modifiers, 'const')
class ASTDeclSpecs(ASTBase):
def __init__(self, outer: str,
leftSpecs: ASTDeclSpecsSimple,
rightSpecs: ASTDeclSpecsSimple,
trailing: ASTTrailingTypeSpec) -> None:
# leftSpecs and rightSpecs are used for output
# allSpecs are used for id generation TODO: remove?
self.outer = outer
self.leftSpecs = leftSpecs
self.rightSpecs = rightSpecs
self.allSpecs = self.leftSpecs.mergeWith(self.rightSpecs)
self.trailingTypeSpec = trailing
def _stringify(self, transform: StringifyTransform) -> str:
res = [] # type: List[str]
l = transform(self.leftSpecs)
if len(l) > 0:
res.append(l)
if self.trailingTypeSpec:
if len(res) > 0:
res.append(" ")
res.append(transform(self.trailingTypeSpec))
r = str(self.rightSpecs)
if len(r) > 0:
if len(res) > 0:
res.append(" ")
res.append(r)
return "".join(res)
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
verify_description_mode(mode)
modifiers = [] # type: List[Node]
def _add(modifiers: List[Node], text: str) -> None:
if len(modifiers) > 0:
modifiers.append(nodes.Text(' '))
modifiers.append(addnodes.desc_annotation(text, text))
self.leftSpecs.describe_signature(modifiers)
for m in modifiers:
signode += m
if self.trailingTypeSpec:
if len(modifiers) > 0:
signode += nodes.Text(' ')
self.trailingTypeSpec.describe_signature(signode, mode, env,
symbol=symbol)
modifiers = []
self.rightSpecs.describe_signature(modifiers)
if len(modifiers) > 0:
signode += nodes.Text(' ')
for m in modifiers:
signode += m
# Declarator
################################################################################
class ASTArray(ASTBase):
def __init__(self, static: bool, const: bool, volatile: bool, restrict: bool,
vla: bool, size: ASTExpression):
self.static = static
self.const = const
self.volatile = volatile
self.restrict = restrict
self.vla = vla
self.size = size
if vla:
assert size is None
if size is not None:
assert not vla
def _stringify(self, transform: StringifyTransform) -> str:
el = []
if self.static:
el.append('static')
if self.restrict:
el.append('restrict')
if self.volatile:
el.append('volatile')
if self.const:
el.append('const')
if self.vla:
return '[' + ' '.join(el) + '*]'
elif self.size:
el.append(transform(self.size))
return '[' + ' '.join(el) + ']'
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
verify_description_mode(mode)
signode.append(nodes.Text("["))
addSpace = False
def _add(signode: TextElement, text: str) -> bool:
if addSpace:
signode += nodes.Text(' ')
signode += addnodes.desc_annotation(text, text)
return True
if self.static:
addSpace = _add(signode, 'static')
if self.restrict:
addSpace = _add(signode, 'restrict')
if self.volatile:
addSpace = _add(signode, 'volatile')
if self.const:
addSpace = _add(signode, 'const')
if self.vla:
signode.append(nodes.Text('*'))
elif self.size:
if addSpace:
signode += nodes.Text(' ')
self.size.describe_signature(signode, mode, env, symbol)
signode.append(nodes.Text("]"))
class ASTDeclarator(ASTBase):
@property
def name(self) -> ASTNestedName:
raise NotImplementedError(repr(self))
@property
def function_params(self) -> List[ASTFunctionParameter]:
raise NotImplementedError(repr(self))
def require_space_after_declSpecs(self) -> bool:
raise NotImplementedError(repr(self))
class ASTDeclaratorNameParam(ASTDeclarator):
def __init__(self, declId: ASTNestedName,
arrayOps: List[ASTArray], param: ASTParameters) -> None:
self.declId = declId
self.arrayOps = arrayOps
self.param = param
@property
def name(self) -> ASTNestedName:
return self.declId
@property
def function_params(self) -> List[ASTFunctionParameter]:
return self.param.function_params
# ------------------------------------------------------------------------
def require_space_after_declSpecs(self) -> bool:
return self.declId is not None
def _stringify(self, transform: StringifyTransform) -> str:
res = []
if self.declId:
res.append(transform(self.declId))
for op in self.arrayOps:
res.append(transform(op))
if self.param:
res.append(transform(self.param))
return ''.join(res)
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
verify_description_mode(mode)
if self.declId:
self.declId.describe_signature(signode, mode, env, symbol)
for op in self.arrayOps:
op.describe_signature(signode, mode, env, symbol)
if self.param:
self.param.describe_signature(signode, mode, env, symbol)
class ASTDeclaratorNameBitField(ASTDeclarator):
def __init__(self, declId: ASTNestedName, size: ASTExpression):
self.declId = declId
self.size = size
@property
def name(self) -> ASTNestedName:
return self.declId
# ------------------------------------------------------------------------
def require_space_after_declSpecs(self) -> bool:
return self.declId is not None
def _stringify(self, transform: StringifyTransform) -> str:
res = []
if self.declId:
res.append(transform(self.declId))
res.append(" : ")
res.append(transform(self.size))
return ''.join(res)
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
verify_description_mode(mode)
if self.declId:
self.declId.describe_signature(signode, mode, env, symbol)
signode += nodes.Text(' : ', ' : ')
self.size.describe_signature(signode, mode, env, symbol)
class ASTDeclaratorPtr(ASTDeclarator):
def __init__(self, next: ASTDeclarator, restrict: bool, volatile: bool, const: bool,
attrs: Any) -> None:
assert next
self.next = next
self.restrict = restrict
self.volatile = volatile
self.const = const
self.attrs = attrs
@property
def name(self) -> ASTNestedName:
return self.next.name
@property
def function_params(self) -> List[ASTFunctionParameter]:
return self.next.function_params
def require_space_after_declSpecs(self) -> bool:
return self.const or self.volatile or self.restrict or \
len(self.attrs) > 0 or \
self.next.require_space_after_declSpecs()
def _stringify(self, transform: StringifyTransform) -> str:
res = ['*']
for a in self.attrs:
res.append(transform(a))
if len(self.attrs) > 0 and (self.restrict or self.volatile or self.const):
res.append(' ')
if self.restrict:
res.append('restrict')
if self.volatile:
if self.restrict:
res.append(' ')
res.append('volatile')
if self.const:
if self.restrict or self.volatile:
res.append(' ')
res.append('const')
if self.const or self.volatile or self.restrict or len(self.attrs) > 0:
if self.next.require_space_after_declSpecs():
res.append(' ')
res.append(transform(self.next))
return ''.join(res)
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
verify_description_mode(mode)
signode += nodes.Text("*")
for a in self.attrs:
a.describe_signature(signode)
if len(self.attrs) > 0 and (self.restrict or self.volatile or self.const):
signode += nodes.Text(' ')
def _add_anno(signode: TextElement, text: str) -> None:
signode += addnodes.desc_annotation(text, text)
if self.restrict:
_add_anno(signode, 'restrict')
if self.volatile:
if self.restrict:
signode += nodes.Text(' ')
_add_anno(signode, 'volatile')
if self.const:
if self.restrict or self.volatile:
signode += nodes.Text(' ')
_add_anno(signode, 'const')
if self.const or self.volatile or self.restrict or len(self.attrs) > 0:
if self.next.require_space_after_declSpecs():
signode += nodes.Text(' ')
self.next.describe_signature(signode, mode, env, symbol)
class ASTDeclaratorParen(ASTDeclarator):
def __init__(self, inner: ASTDeclarator, next: ASTDeclarator) -> None:
assert inner
assert next
self.inner = inner
self.next = next
# TODO: we assume the name and params are in inner
@property
def name(self) -> ASTNestedName:
return self.inner.name
@property
def function_params(self) -> List[ASTFunctionParameter]:
return self.inner.function_params
def require_space_after_declSpecs(self) -> bool:
return True
def _stringify(self, transform: StringifyTransform) -> str:
res = ['(']
res.append(transform(self.inner))
res.append(')')
res.append(transform(self.next))
return ''.join(res)
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
verify_description_mode(mode)
signode += nodes.Text('(')
self.inner.describe_signature(signode, mode, env, symbol)
signode += nodes.Text(')')
self.next.describe_signature(signode, "noneIsName", env, symbol)
# Initializer
################################################################################
class ASTParenExprList(ASTBase):
def __init__(self, exprs: List[ASTExpression]) -> None:
self.exprs = exprs
def _stringify(self, transform: StringifyTransform) -> str:
exprs = [transform(e) for e in self.exprs]
return '(%s)' % ', '.join(exprs)
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
verify_description_mode(mode)
signode.append(nodes.Text('('))
first = True
for e in self.exprs:
if not first:
signode.append(nodes.Text(', '))
else:
first = False
e.describe_signature(signode, mode, env, symbol)
signode.append(nodes.Text(')'))
class ASTBracedInitList(ASTBase):
def __init__(self, exprs: List[ASTExpression], trailingComma: bool) -> None:
self.exprs = exprs
self.trailingComma = trailingComma
def _stringify(self, transform: StringifyTransform) -> str:
exprs = [transform(e) for e in self.exprs]
trailingComma = ',' if self.trailingComma else ''
return '{%s%s}' % (', '.join(exprs), trailingComma)
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
verify_description_mode(mode)
signode.append(nodes.Text('{'))
first = True
for e in self.exprs:
if not first:
signode.append(nodes.Text(', '))
else:
first = False
e.describe_signature(signode, mode, env, symbol)
if self.trailingComma:
signode.append(nodes.Text(','))
signode.append(nodes.Text('}'))
class ASTInitializer(ASTBase):
def __init__(self, value: Union[ASTBracedInitList, ASTExpression],
hasAssign: bool = True) -> None:
self.value = value
self.hasAssign = hasAssign
def _stringify(self, transform: StringifyTransform) -> str:
val = transform(self.value)
if self.hasAssign:
return ' = ' + val
else:
return val
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
verify_description_mode(mode)
if self.hasAssign:
signode.append(nodes.Text(' = '))
self.value.describe_signature(signode, 'markType', env, symbol)
class ASTType(ASTBase):
def __init__(self, declSpecs: ASTDeclSpecs, decl: ASTDeclarator) -> None:
assert declSpecs
assert decl
self.declSpecs = declSpecs
self.decl = decl
@property
def name(self) -> ASTNestedName:
return self.decl.name
@property
def function_params(self) -> List[ASTFunctionParameter]:
return self.decl.function_params
def _stringify(self, transform: StringifyTransform) -> str:
res = []
declSpecs = transform(self.declSpecs)
res.append(declSpecs)
if self.decl.require_space_after_declSpecs() and len(declSpecs) > 0:
res.append(' ')
res.append(transform(self.decl))
return ''.join(res)
def get_type_declaration_prefix(self) -> str:
if self.declSpecs.trailingTypeSpec:
return 'typedef'
else:
return 'type'
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
verify_description_mode(mode)
self.declSpecs.describe_signature(signode, 'markType', env, symbol)
if (self.decl.require_space_after_declSpecs() and
len(str(self.declSpecs)) > 0):
signode += nodes.Text(' ')
# for parameters that don't really declare new names we get 'markType',
# this should not be propagated, but be 'noneIsName'.
if mode == 'markType':
mode = 'noneIsName'
self.decl.describe_signature(signode, mode, env, symbol)
class ASTTypeWithInit(ASTBase):
def __init__(self, type: ASTType, init: ASTInitializer) -> None:
self.type = type
self.init = init
@property
def name(self) -> ASTNestedName:
return self.type.name
def _stringify(self, transform: StringifyTransform) -> str:
res = []
res.append(transform(self.type))
if self.init:
res.append(transform(self.init))
return ''.join(res)
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
verify_description_mode(mode)
self.type.describe_signature(signode, mode, env, symbol)
if self.init:
self.init.describe_signature(signode, mode, env, symbol)
class ASTMacroParameter(ASTBase):
def __init__(self, arg: ASTNestedName, ellipsis: bool = False) -> None:
self.arg = arg
self.ellipsis = ellipsis
def _stringify(self, transform: StringifyTransform) -> str:
if self.ellipsis:
return '...'
else:
return transform(self.arg)
def describe_signature(self, signode: Any, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
verify_description_mode(mode)
if self.ellipsis:
signode += nodes.Text('...')
else:
self.arg.describe_signature(signode, mode, env, symbol=symbol)
class ASTMacro(ASTBase):
def __init__(self, ident: ASTNestedName, args: List[ASTMacroParameter]) -> None:
self.ident = ident
self.args = args
@property
def name(self) -> ASTNestedName:
return self.ident
def _stringify(self, transform: StringifyTransform) -> str:
res = []
res.append(transform(self.ident))
if self.args is not None:
res.append('(')
first = True
for arg in self.args:
if not first:
res.append(', ')
first = False
res.append(transform(arg))
res.append(')')
return ''.join(res)
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
verify_description_mode(mode)
self.ident.describe_signature(signode, mode, env, symbol)
if self.args is None:
return
paramlist = addnodes.desc_parameterlist()
for arg in self.args:
param = addnodes.desc_parameter('', '', noemph=True)
arg.describe_signature(param, 'param', env, symbol=symbol)
paramlist += param
signode += paramlist
class ASTStruct(ASTBase):
def __init__(self, name: ASTNestedName) -> None:
self.name = name
def get_id(self, version: int, objectType: str, symbol: "Symbol") -> str:
return symbol.get_full_nested_name().get_id(version)
def _stringify(self, transform: StringifyTransform) -> str:
return transform(self.name)
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
verify_description_mode(mode)
self.name.describe_signature(signode, mode, env, symbol=symbol)
class ASTUnion(ASTBase):
def __init__(self, name: ASTNestedName) -> None:
self.name = name
def get_id(self, version: int, objectType: str, symbol: "Symbol") -> str:
return symbol.get_full_nested_name().get_id(version)
def _stringify(self, transform: StringifyTransform) -> str:
return transform(self.name)
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
verify_description_mode(mode)
self.name.describe_signature(signode, mode, env, symbol=symbol)
class ASTEnum(ASTBase):
def __init__(self, name: ASTNestedName) -> None:
self.name = name
def get_id(self, version: int, objectType: str, symbol: "Symbol") -> str:
return symbol.get_full_nested_name().get_id(version)
def _stringify(self, transform: StringifyTransform) -> str:
return transform(self.name)
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
verify_description_mode(mode)
self.name.describe_signature(signode, mode, env, symbol=symbol)
class ASTEnumerator(ASTBase):
def __init__(self, name: ASTNestedName, init: ASTInitializer) -> None:
self.name = name
self.init = init
def get_id(self, version: int, objectType: str, symbol: "Symbol") -> str:
return symbol.get_full_nested_name().get_id(version)
def _stringify(self, transform: StringifyTransform) -> str:
res = []
res.append(transform(self.name))
if self.init:
res.append(transform(self.init))
return ''.join(res)
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", symbol: "Symbol") -> None:
verify_description_mode(mode)
self.name.describe_signature(signode, mode, env, symbol)
if self.init:
self.init.describe_signature(signode, 'markType', env, symbol)
class ASTDeclaration(ASTBaseBase):
def __init__(self, objectType: str, directiveType: str, declaration: Any,
semicolon: bool = False) -> None:
self.objectType = objectType
self.directiveType = directiveType
self.declaration = declaration
self.semicolon = semicolon
self.symbol = None # type: Symbol
# set by CObject._add_enumerator_to_parent
self.enumeratorScopedSymbol = None # type: Symbol
@property
def name(self) -> ASTNestedName:
return self.declaration.name
@property
def function_params(self) -> List[ASTFunctionParameter]:
if self.objectType != 'function':
return None
return self.declaration.function_params
def get_id(self, version: int, prefixed: bool = True) -> str:
if self.objectType == 'enumerator' and self.enumeratorScopedSymbol:
return self.enumeratorScopedSymbol.declaration.get_id(version, prefixed)
id_ = self.symbol.get_full_nested_name().get_id(version)
if prefixed:
return _id_prefix[version] + id_
else:
return id_
def get_newest_id(self) -> str:
return self.get_id(_max_id, True)
def _stringify(self, transform: StringifyTransform) -> str:
res = transform(self.declaration)
if self.semicolon:
res += ';'
return res
def describe_signature(self, signode: TextElement, mode: str,
env: "BuildEnvironment", options: Dict) -> None:
verify_description_mode(mode)
assert self.symbol
# The caller of the domain added a desc_signature node.
# Always enable multiline:
signode['is_multiline'] = True
# Put each line in a desc_signature_line node.
mainDeclNode = addnodes.desc_signature_line()
mainDeclNode.sphinx_line_type = 'declarator'
mainDeclNode['add_permalink'] = not self.symbol.isRedeclaration
signode += mainDeclNode
if self.objectType == 'member':
pass
elif self.objectType == 'function':
pass
elif self.objectType == 'macro':
pass
elif self.objectType == 'struct':
mainDeclNode += addnodes.desc_annotation('struct ', 'struct ')
elif self.objectType == 'union':
mainDeclNode += addnodes.desc_annotation('union ', 'union ')
elif self.objectType == 'enum':
mainDeclNode += addnodes.desc_annotation('enum ', 'enum ')
elif self.objectType == 'enumerator':
mainDeclNode += addnodes.desc_annotation('enumerator ', 'enumerator ')
elif self.objectType == 'type':
prefix = self.declaration.get_type_declaration_prefix()
prefix += ' '
mainDeclNode += addnodes.desc_annotation(prefix, prefix)
else:
assert False
self.declaration.describe_signature(mainDeclNode, mode, env, self.symbol)
if self.semicolon:
mainDeclNode += nodes.Text(';')
class SymbolLookupResult:
def __init__(self, symbols: Iterator["Symbol"], parentSymbol: "Symbol",
ident: ASTIdentifier) -> None:
self.symbols = symbols
self.parentSymbol = parentSymbol
self.ident = ident
class LookupKey:
def __init__(self, data: List[Tuple[ASTIdentifier, str]]) -> None:
self.data = data
def __str__(self) -> str:
return '[{}]'.format(', '.join("({}, {})".format(
ident, id_) for ident, id_ in self.data))
class Symbol:
debug_indent = 0
debug_indent_string = " "
debug_lookup = False
debug_show_tree = False
@staticmethod
def debug_print(*args: Any) -> None:
print(Symbol.debug_indent_string * Symbol.debug_indent, end="")
print(*args)
def _assert_invariants(self) -> None:
if not self.parent:
# parent == None means global scope, so declaration means a parent
assert not self.declaration
assert not self.docname
else:
if self.declaration:
assert self.docname
def __setattr__(self, key: str, value: Any) -> None:
if key == "children":
assert False
else:
return super().__setattr__(key, value)
def __init__(self, parent: "Symbol", ident: ASTIdentifier,
declaration: ASTDeclaration, docname: str) -> None:
self.parent = parent
# declarations in a single directive are linked together
self.siblingAbove = None # type: Symbol
self.siblingBelow = None # type: Symbol
self.ident = ident
self.declaration = declaration
self.docname = docname
self.isRedeclaration = False
self._assert_invariants()
# Remember to modify Symbol.remove if modifications to the parent change.
self._children = [] # type: List[Symbol]
self._anonChildren = [] # type: List[Symbol]
# note: _children includes _anonChildren
if self.parent:
self.parent._children.append(self)
if self.declaration:
self.declaration.symbol = self
# Do symbol addition after self._children has been initialised.
self._add_function_params()
def _fill_empty(self, declaration: ASTDeclaration, docname: str) -> None:
self._assert_invariants()
assert not self.declaration
assert not self.docname
assert declaration
assert docname
self.declaration = declaration
self.declaration.symbol = self
self.docname = docname
self._assert_invariants()
# and symbol addition should be done as well
self._add_function_params()
def _add_function_params(self) -> None:
if Symbol.debug_lookup:
Symbol.debug_indent += 1
Symbol.debug_print("_add_function_params:")
# Note: we may be called from _fill_empty, so the symbols we want
# to add may actually already be present (as empty symbols).
# add symbols for function parameters, if any
if self.declaration is not None and self.declaration.function_params is not None:
for p in self.declaration.function_params:
if p.arg is None:
continue
nn = p.arg.name
if nn is None:
continue
# (comparing to the template params: we have checked that we are a declaration)
decl = ASTDeclaration('functionParam', None, p)
assert not nn.rooted
assert len(nn.names) == 1
self._add_symbols(nn, decl, self.docname)
if Symbol.debug_lookup:
Symbol.debug_indent -= 1
def remove(self) -> None:
if self.parent is None:
return
assert self in self.parent._children
self.parent._children.remove(self)
self.parent = None
def clear_doc(self, docname: str) -> None:
newChildren = [] # type: List[Symbol]
for sChild in self._children:
sChild.clear_doc(docname)
if sChild.declaration and sChild.docname == docname:
sChild.declaration = None
sChild.docname = None
if sChild.siblingAbove is not None:
sChild.siblingAbove.siblingBelow = sChild.siblingBelow
if sChild.siblingBelow is not None:
sChild.siblingBelow.siblingAbove = sChild.siblingAbove
sChild.siblingAbove = None
sChild.siblingBelow = None
newChildren.append(sChild)
self._children = newChildren
def get_all_symbols(self) -> Iterator["Symbol"]:
yield self
for sChild in self._children:
for s in sChild.get_all_symbols():
yield s
@property
def children_recurse_anon(self) -> Iterator["Symbol"]:
for c in self._children:
yield c
if not c.ident.is_anon():
continue
yield from c.children_recurse_anon
def get_lookup_key(self) -> "LookupKey":
# The pickle files for the environment and for each document are distinct.
# The environment has all the symbols, but the documents has xrefs that
# must know their scope. A lookup key is essentially a specification of
# how to find a specific symbol.
symbols = []
s = self
while s.parent:
symbols.append(s)
s = s.parent
symbols.reverse()
key = []
for s in symbols:
if s.declaration is not None:
# TODO: do we need the ID?
key.append((s.ident, s.declaration.get_newest_id()))
else:
key.append((s.ident, None))
return LookupKey(key)
def get_full_nested_name(self) -> ASTNestedName:
symbols = []
s = self
while s.parent:
symbols.append(s)
s = s.parent
symbols.reverse()
names = []
for s in symbols:
names.append(s.ident)
return ASTNestedName(names, rooted=False)
def _find_first_named_symbol(self, ident: ASTIdentifier,
matchSelf: bool, recurseInAnon: bool) -> "Symbol":
# TODO: further simplification from C++ to C
if Symbol.debug_lookup:
Symbol.debug_print("_find_first_named_symbol ->")
res = self._find_named_symbols(ident, matchSelf, recurseInAnon,
searchInSiblings=False)
try:
return next(res)
except StopIteration:
return None
def _find_named_symbols(self, ident: ASTIdentifier,
matchSelf: bool, recurseInAnon: bool,
searchInSiblings: bool) -> Iterator["Symbol"]:
# TODO: further simplification from C++ to C
if Symbol.debug_lookup:
Symbol.debug_indent += 1
Symbol.debug_print("_find_named_symbols:")
Symbol.debug_indent += 1
Symbol.debug_print("self:")
print(self.to_string(Symbol.debug_indent + 1), end="")
Symbol.debug_print("ident: ", ident)
Symbol.debug_print("matchSelf: ", matchSelf)
Symbol.debug_print("recurseInAnon: ", recurseInAnon)
Symbol.debug_print("searchInSiblings: ", searchInSiblings)
def candidates() -> Generator["Symbol", None, None]:
s = self
if Symbol.debug_lookup:
Symbol.debug_print("searching in self:")
print(s.to_string(Symbol.debug_indent + 1), end="")
while True:
if matchSelf:
yield s
if recurseInAnon:
yield from s.children_recurse_anon
else:
yield from s._children
if s.siblingAbove is None:
break
s = s.siblingAbove
if Symbol.debug_lookup:
Symbol.debug_print("searching in sibling:")
print(s.to_string(Symbol.debug_indent + 1), end="")
for s in candidates():
if Symbol.debug_lookup:
Symbol.debug_print("candidate:")
print(s.to_string(Symbol.debug_indent + 1), end="")
if s.ident == ident:
if Symbol.debug_lookup:
Symbol.debug_indent += 1
Symbol.debug_print("matches")
Symbol.debug_indent -= 3
yield s
if Symbol.debug_lookup:
Symbol.debug_indent += 2
if Symbol.debug_lookup:
Symbol.debug_indent -= 2
def _symbol_lookup(self, nestedName: ASTNestedName,
onMissingQualifiedSymbol: Callable[["Symbol", ASTIdentifier], "Symbol"], # NOQA
ancestorLookupType: str, matchSelf: bool,
recurseInAnon: bool, searchInSiblings: bool) -> SymbolLookupResult:
# TODO: further simplification from C++ to C
# ancestorLookupType: if not None, specifies the target type of the lookup
if Symbol.debug_lookup:
Symbol.debug_indent += 1
Symbol.debug_print("_symbol_lookup:")
Symbol.debug_indent += 1
Symbol.debug_print("self:")
print(self.to_string(Symbol.debug_indent + 1), end="")
Symbol.debug_print("nestedName: ", nestedName)
Symbol.debug_print("ancestorLookupType:", ancestorLookupType)
Symbol.debug_print("matchSelf: ", matchSelf)
Symbol.debug_print("recurseInAnon: ", recurseInAnon)
Symbol.debug_print("searchInSiblings: ", searchInSiblings)
names = nestedName.names
# find the right starting point for lookup
parentSymbol = self
if nestedName.rooted:
while parentSymbol.parent:
parentSymbol = parentSymbol.parent
if ancestorLookupType is not None:
# walk up until we find the first identifier
firstName = names[0]
while parentSymbol.parent:
if parentSymbol.find_identifier(firstName,
matchSelf=matchSelf,
recurseInAnon=recurseInAnon,
searchInSiblings=searchInSiblings):
break
parentSymbol = parentSymbol.parent
if Symbol.debug_lookup:
Symbol.debug_print("starting point:")
print(parentSymbol.to_string(Symbol.debug_indent + 1), end="")
# and now the actual lookup
for ident in names[:-1]:
symbol = parentSymbol._find_first_named_symbol(
ident, matchSelf=matchSelf, recurseInAnon=recurseInAnon)
if symbol is None:
symbol = onMissingQualifiedSymbol(parentSymbol, ident)
if symbol is None:
if Symbol.debug_lookup:
Symbol.debug_indent -= 2
return None
# We have now matched part of a nested name, and need to match more
# so even if we should matchSelf before, we definitely shouldn't
# even more. (see also issue #2666)
matchSelf = False
parentSymbol = symbol
if Symbol.debug_lookup:
Symbol.debug_print("handle last name from:")
print(parentSymbol.to_string(Symbol.debug_indent + 1), end="")
# handle the last name
ident = names[-1]
symbols = parentSymbol._find_named_symbols(
ident, matchSelf=matchSelf,
recurseInAnon=recurseInAnon,
searchInSiblings=searchInSiblings)
if Symbol.debug_lookup:
symbols = list(symbols) # type: ignore
Symbol.debug_indent -= 2
return SymbolLookupResult(symbols, parentSymbol, ident)
def _add_symbols(self, nestedName: ASTNestedName,
declaration: ASTDeclaration, docname: str) -> "Symbol":
# TODO: further simplification from C++ to C
# Used for adding a whole path of symbols, where the last may or may not
# be an actual declaration.
if Symbol.debug_lookup:
Symbol.debug_indent += 1
Symbol.debug_print("_add_symbols:")
Symbol.debug_indent += 1
Symbol.debug_print("nn: ", nestedName)
Symbol.debug_print("decl: ", declaration)
Symbol.debug_print("doc: ", docname)
def onMissingQualifiedSymbol(parentSymbol: "Symbol", ident: ASTIdentifier) -> "Symbol":
if Symbol.debug_lookup:
Symbol.debug_indent += 1
Symbol.debug_print("_add_symbols, onMissingQualifiedSymbol:")
Symbol.debug_indent += 1
Symbol.debug_print("ident: ", ident)
Symbol.debug_indent -= 2
return Symbol(parent=parentSymbol, ident=ident,
declaration=None, docname=None)
lookupResult = self._symbol_lookup(nestedName,
onMissingQualifiedSymbol,
ancestorLookupType=None,
matchSelf=False,
recurseInAnon=False,
searchInSiblings=False)
assert lookupResult is not None # we create symbols all the way, so that can't happen
symbols = list(lookupResult.symbols)
if len(symbols) == 0:
if Symbol.debug_lookup:
Symbol.debug_print("_add_symbols, result, no symbol:")
Symbol.debug_indent += 1
Symbol.debug_print("ident: ", lookupResult.ident)
Symbol.debug_print("declaration: ", declaration)
Symbol.debug_print("docname: ", docname)
Symbol.debug_indent -= 1
symbol = Symbol(parent=lookupResult.parentSymbol,
ident=lookupResult.ident,
declaration=declaration,
docname=docname)
if Symbol.debug_lookup:
Symbol.debug_indent -= 2
return symbol
if Symbol.debug_lookup:
Symbol.debug_print("_add_symbols, result, symbols:")
Symbol.debug_indent += 1
Symbol.debug_print("number symbols:", len(symbols))
Symbol.debug_indent -= 1
if not declaration:
if Symbol.debug_lookup:
Symbol.debug_print("no delcaration")
Symbol.debug_indent -= 2
# good, just a scope creation
# TODO: what if we have more than one symbol?
return symbols[0]
noDecl = []
withDecl = []
dupDecl = []
for s in symbols:
if s.declaration is None:
noDecl.append(s)
elif s.isRedeclaration:
dupDecl.append(s)
else:
withDecl.append(s)
if Symbol.debug_lookup:
Symbol.debug_print("#noDecl: ", len(noDecl))
Symbol.debug_print("#withDecl:", len(withDecl))
Symbol.debug_print("#dupDecl: ", len(dupDecl))
# With partial builds we may start with a large symbol tree stripped of declarations.
# Essentially any combination of noDecl, withDecl, and dupDecls seems possible.
# TODO: make partial builds fully work. What should happen when the primary symbol gets
# deleted, and other duplicates exist? The full document should probably be rebuild.
# First check if one of those with a declaration matches.
# If it's a function, we need to compare IDs,
# otherwise there should be only one symbol with a declaration.
def makeCandSymbol() -> "Symbol":
if Symbol.debug_lookup:
Symbol.debug_print("begin: creating candidate symbol")
symbol = Symbol(parent=lookupResult.parentSymbol,
ident=lookupResult.ident,
declaration=declaration,
docname=docname)
if Symbol.debug_lookup:
Symbol.debug_print("end: creating candidate symbol")
return symbol
if len(withDecl) == 0:
candSymbol = None
else:
candSymbol = makeCandSymbol()
def handleDuplicateDeclaration(symbol: "Symbol", candSymbol: "Symbol") -> None:
if Symbol.debug_lookup:
Symbol.debug_indent += 1
Symbol.debug_print("redeclaration")
Symbol.debug_indent -= 1
Symbol.debug_indent -= 2
# Redeclaration of the same symbol.
# Let the new one be there, but raise an error to the client
# so it can use the real symbol as subscope.
# This will probably result in a duplicate id warning.
candSymbol.isRedeclaration = True
raise _DuplicateSymbolError(symbol, declaration)
if declaration.objectType != "function":
assert len(withDecl) <= 1
handleDuplicateDeclaration(withDecl[0], candSymbol)
# (not reachable)
# a function, so compare IDs
candId = declaration.get_newest_id()
if Symbol.debug_lookup:
Symbol.debug_print("candId:", candId)
for symbol in withDecl:
oldId = symbol.declaration.get_newest_id()
if Symbol.debug_lookup:
Symbol.debug_print("oldId: ", oldId)
if candId == oldId:
handleDuplicateDeclaration(symbol, candSymbol)
# (not reachable)
# no candidate symbol found with matching ID
# if there is an empty symbol, fill that one
if len(noDecl) == 0:
if Symbol.debug_lookup:
Symbol.debug_print("no match, no empty, candSybmol is not None?:", candSymbol is not None) # NOQA
Symbol.debug_indent -= 2
if candSymbol is not None:
return candSymbol
else:
return makeCandSymbol()
else:
if Symbol.debug_lookup:
Symbol.debug_print(
"no match, but fill an empty declaration, candSybmol is not None?:",
candSymbol is not None) # NOQA
Symbol.debug_indent -= 2
if candSymbol is not None:
candSymbol.remove()
# assert len(noDecl) == 1
# TODO: enable assertion when we at some point find out how to do cleanup
# for now, just take the first one, it should work fine ... right?
symbol = noDecl[0]
# If someone first opened the scope, and then later
# declares it, e.g,
# .. namespace:: Test
# .. namespace:: nullptr
# .. class:: Test
symbol._fill_empty(declaration, docname)
return symbol
def merge_with(self, other: "Symbol", docnames: List[str],
env: "BuildEnvironment") -> None:
if Symbol.debug_lookup:
Symbol.debug_indent += 1
Symbol.debug_print("merge_with:")
assert other is not None
for otherChild in other._children:
ourChild = self._find_first_named_symbol(
ident=otherChild.ident, matchSelf=False,
recurseInAnon=False)
if ourChild is None:
# TODO: hmm, should we prune by docnames?
self._children.append(otherChild)
otherChild.parent = self
otherChild._assert_invariants()
continue
if otherChild.declaration and otherChild.docname in docnames:
if not ourChild.declaration:
ourChild._fill_empty(otherChild.declaration, otherChild.docname)
elif ourChild.docname != otherChild.docname:
name = str(ourChild.declaration)
msg = __("Duplicate declaration, also defined in '%s'.\n"
"Declaration is '%s'.")
msg = msg % (ourChild.docname, name)
logger.warning(msg, location=otherChild.docname)
else:
# Both have declarations, and in the same docname.
# This can apparently happen, it should be safe to
# just ignore it, right?
pass
ourChild.merge_with(otherChild, docnames, env)
if Symbol.debug_lookup:
Symbol.debug_indent -= 1
def add_name(self, nestedName: ASTNestedName) -> "Symbol":
if Symbol.debug_lookup:
Symbol.debug_indent += 1
Symbol.debug_print("add_name:")
res = self._add_symbols(nestedName, declaration=None, docname=None)
if Symbol.debug_lookup:
Symbol.debug_indent -= 1
return res
def add_declaration(self, declaration: ASTDeclaration, docname: str) -> "Symbol":
if Symbol.debug_lookup:
Symbol.debug_indent += 1
Symbol.debug_print("add_declaration:")
assert declaration
assert docname
nestedName = declaration.name
res = self._add_symbols(nestedName, declaration, docname)
if Symbol.debug_lookup:
Symbol.debug_indent -= 1
return res
def find_identifier(self, ident: ASTIdentifier,
matchSelf: bool, recurseInAnon: bool, searchInSiblings: bool
) -> "Symbol":
if Symbol.debug_lookup:
Symbol.debug_indent += 1
Symbol.debug_print("find_identifier:")
Symbol.debug_indent += 1
Symbol.debug_print("ident: ", ident)
Symbol.debug_print("matchSelf: ", matchSelf)
Symbol.debug_print("recurseInAnon: ", recurseInAnon)
Symbol.debug_print("searchInSiblings:", searchInSiblings)
print(self.to_string(Symbol.debug_indent + 1), end="")
Symbol.debug_indent -= 2
current = self
while current is not None:
if Symbol.debug_lookup:
Symbol.debug_indent += 2
Symbol.debug_print("trying:")
print(current.to_string(Symbol.debug_indent + 1), end="")
Symbol.debug_indent -= 2
if matchSelf and current.ident == ident:
return current
children = current.children_recurse_anon if recurseInAnon else current._children
for s in children:
if s.ident == ident:
return s
if not searchInSiblings:
break
current = current.siblingAbove
return None
def direct_lookup(self, key: "LookupKey") -> "Symbol":
if Symbol.debug_lookup:
Symbol.debug_indent += 1
Symbol.debug_print("direct_lookup:")
Symbol.debug_indent += 1
s = self
for name, id_ in key.data:
res = None
for cand in s._children:
if cand.ident == name:
res = cand
break
s = res
if Symbol.debug_lookup:
Symbol.debug_print("name: ", name)
Symbol.debug_print("id: ", id_)
if s is not None:
print(s.to_string(Symbol.debug_indent + 1), end="")
else:
Symbol.debug_print("not found")
if s is None:
if Symbol.debug_lookup:
Symbol.debug_indent -= 2
return None
if Symbol.debug_lookup:
Symbol.debug_indent -= 2
return s
def find_declaration(self, nestedName: ASTNestedName, typ: str,
matchSelf: bool, recurseInAnon: bool) -> "Symbol":
# templateShorthand: missing template parameter lists for templates is ok
if Symbol.debug_lookup:
Symbol.debug_indent += 1
Symbol.debug_print("find_declaration:")
def onMissingQualifiedSymbol(parentSymbol: "Symbol",
ident: ASTIdentifier) -> "Symbol":
return None
lookupResult = self._symbol_lookup(nestedName,
onMissingQualifiedSymbol,
ancestorLookupType=typ,
matchSelf=matchSelf,
recurseInAnon=recurseInAnon,
searchInSiblings=False)
if Symbol.debug_lookup:
Symbol.debug_indent -= 1
if lookupResult is None:
return None
symbols = list(lookupResult.symbols)
if len(symbols) == 0:
return None
return symbols[0]
def to_string(self, indent: int) -> str:
res = [Symbol.debug_indent_string * indent]
if not self.parent:
res.append('::')
else:
if self.ident:
res.append(str(self.ident))
else:
res.append(str(self.declaration))
if self.declaration:
res.append(": ")
if self.isRedeclaration:
res.append('!!duplicate!! ')
res.append(str(self.declaration))
if self.docname:
res.append('\t(')
res.append(self.docname)
res.append(')')
res.append('\n')
return ''.join(res)
def dump(self, indent: int) -> str:
res = [self.to_string(indent)]
for c in self._children:
res.append(c.dump(indent + 1))
return ''.join(res)
class DefinitionParser(BaseParser):
# those without signedness and size modifiers
# see https://en.cppreference.com/w/cpp/language/types
_simple_fundamental_types = (
'void', '_Bool', 'bool', 'char', 'int', 'float', 'double',
'__int64',
)
_prefix_keys = ('struct', 'enum', 'union')
@property
def language(self) -> str:
return 'C'
@property
def id_attributes(self):
return self.config.c_id_attributes
@property
def paren_attributes(self):
return self.config.c_paren_attributes
def _parse_string(self) -> str:
if self.current_char != '"':
return None
startPos = self.pos
self.pos += 1
escape = False
while True:
if self.eof:
self.fail("Unexpected end during inside string.")
elif self.current_char == '"' and not escape:
self.pos += 1
break
elif self.current_char == '\\':
escape = True
else:
escape = False
self.pos += 1
return self.definition[startPos:self.pos]
def _parse_literal(self) -> ASTLiteral:
# -> integer-literal
# | character-literal
# | floating-literal
# | string-literal
# | boolean-literal -> "false" | "true"
self.skip_ws()
if self.skip_word('true'):
return ASTBooleanLiteral(True)
if self.skip_word('false'):
return ASTBooleanLiteral(False)
pos = self.pos
if self.match(float_literal_re):
self.match(float_literal_suffix_re)
return ASTNumberLiteral(self.definition[pos:self.pos])
for regex in [binary_literal_re, hex_literal_re,
integer_literal_re, octal_literal_re]:
if self.match(regex):
self.match(integers_literal_suffix_re)
return ASTNumberLiteral(self.definition[pos:self.pos])
string = self._parse_string()
if string is not None:
return ASTStringLiteral(string)
# character-literal
if self.match(char_literal_re):
prefix = self.last_match.group(1) # may be None when no prefix
data = self.last_match.group(2)
try:
return ASTCharLiteral(prefix, data)
except UnicodeDecodeError as e:
self.fail("Can not handle character literal. Internal error was: %s" % e)
except UnsupportedMultiCharacterCharLiteral:
self.fail("Can not handle character literal"
" resulting in multiple decoded characters.")
return None
def _parse_paren_expression(self) -> ASTExpression:
# "(" expression ")"
if self.current_char != '(':
return None
self.pos += 1
res = self._parse_expression()
self.skip_ws()
if not self.skip_string(')'):
self.fail("Expected ')' in end of parenthesized expression.")
return ASTParenExpr(res)
def _parse_primary_expression(self) -> ASTExpression:
# literal
# "(" expression ")"
# id-expression -> we parse this with _parse_nested_name
self.skip_ws()
res = self._parse_literal() # type: ASTExpression
if res is not None:
return res
res = self._parse_paren_expression()
if res is not None:
return res
nn = self._parse_nested_name()
if nn is not None:
return ASTIdExpression(nn)
return None
def _parse_initializer_list(self, name: str, open: str, close: str
) -> Tuple[List[ASTExpression], bool]:
# Parse open and close with the actual initializer-list inbetween
# -> initializer-clause '...'[opt]
# | initializer-list ',' initializer-clause '...'[opt]
# TODO: designators
self.skip_ws()
if not self.skip_string_and_ws(open):
return None, None
if self.skip_string(close):
return [], False
exprs = []
trailingComma = False
while True:
self.skip_ws()
expr = self._parse_expression()
self.skip_ws()
exprs.append(expr)
self.skip_ws()
if self.skip_string(close):
break
if not self.skip_string_and_ws(','):
self.fail("Error in %s, expected ',' or '%s'." % (name, close))
if self.current_char == close and close == '}':
self.pos += 1
trailingComma = True
break
return exprs, trailingComma
def _parse_paren_expression_list(self) -> ASTParenExprList:
# -> '(' expression-list ')'
# though, we relax it to also allow empty parens
# as it's needed in some cases
#
# expression-list
# -> initializer-list
exprs, trailingComma = self._parse_initializer_list("parenthesized expression-list",
'(', ')')
if exprs is None:
return None
return ASTParenExprList(exprs)
def _parse_braced_init_list(self) -> ASTBracedInitList:
# -> '{' initializer-list ','[opt] '}'
# | '{' '}'
exprs, trailingComma = self._parse_initializer_list("braced-init-list", '{', '}')
if exprs is None:
return None
return ASTBracedInitList(exprs, trailingComma)
def _parse_postfix_expression(self) -> ASTPostfixExpr:
# -> primary
# | postfix "[" expression "]"
# | postfix "[" braced-init-list [opt] "]"
# | postfix "(" expression-list [opt] ")"
# | postfix "." id-expression
# | postfix "->" id-expression
# | postfix "++"
# | postfix "--"
prefix = self._parse_primary_expression()
# and now parse postfixes
postFixes = [] # type: List[ASTPostfixOp]
while True:
self.skip_ws()
if self.skip_string_and_ws('['):
expr = self._parse_expression()
self.skip_ws()
if not self.skip_string(']'):
self.fail("Expected ']' in end of postfix expression.")
postFixes.append(ASTPostfixArray(expr))
continue
if self.skip_string('.'):
if self.skip_string('*'):
# don't steal the dot
self.pos -= 2
elif self.skip_string('..'):
# don't steal the dot
self.pos -= 3
else:
name = self._parse_nested_name()
postFixes.append(ASTPostfixMember(name))
continue
if self.skip_string('->'):
if self.skip_string('*'):
# don't steal the arrow
self.pos -= 3
else:
name = self._parse_nested_name()
postFixes.append(ASTPostfixMemberOfPointer(name))
continue
if self.skip_string('++'):
postFixes.append(ASTPostfixInc())
continue
if self.skip_string('--'):
postFixes.append(ASTPostfixDec())
continue
lst = self._parse_paren_expression_list()
if lst is not None:
postFixes.append(ASTPostfixCallExpr(lst))
continue
break
return ASTPostfixExpr(prefix, postFixes)
def _parse_unary_expression(self) -> ASTExpression:
# -> postfix
# | "++" cast
# | "--" cast
# | unary-operator cast -> (* | & | + | - | ! | ~) cast
# The rest:
# | "sizeof" unary
# | "sizeof" "(" type-id ")"
# | "alignof" "(" type-id ")"
self.skip_ws()
for op in _expression_unary_ops:
# TODO: hmm, should we be able to backtrack here?
if op[0] in 'cn':
res = self.skip_word(op)
else:
res = self.skip_string(op)
if res:
expr = self._parse_cast_expression()
return ASTUnaryOpExpr(op, expr)
if self.skip_word_and_ws('sizeof'):
if self.skip_string_and_ws('('):
typ = self._parse_type(named=False)
self.skip_ws()
if not self.skip_string(')'):
self.fail("Expecting ')' to end 'sizeof'.")
return ASTSizeofType(typ)
expr = self._parse_unary_expression()
return ASTSizeofExpr(expr)
if self.skip_word_and_ws('alignof'):
if not self.skip_string_and_ws('('):
self.fail("Expecting '(' after 'alignof'.")
typ = self._parse_type(named=False)
self.skip_ws()
if not self.skip_string(')'):
self.fail("Expecting ')' to end 'alignof'.")
return ASTAlignofExpr(typ)
return self._parse_postfix_expression()
def _parse_cast_expression(self) -> ASTExpression:
# -> unary | "(" type-id ")" cast
pos = self.pos
self.skip_ws()
if self.skip_string('('):
try:
typ = self._parse_type(False)
if not self.skip_string(')'):
self.fail("Expected ')' in cast expression.")
expr = self._parse_cast_expression()
return ASTCastExpr(typ, expr)
except DefinitionError as exCast:
self.pos = pos
try:
return self._parse_unary_expression()
except DefinitionError as exUnary:
errs = []
errs.append((exCast, "If type cast expression"))
errs.append((exUnary, "If unary expression"))
raise self._make_multi_error(errs, "Error in cast expression.")
else:
return self._parse_unary_expression()
def _parse_logical_or_expression(self) -> ASTExpression:
# logical-or = logical-and ||
# logical-and = inclusive-or &&
# inclusive-or = exclusive-or |
# exclusive-or = and ^
# and = equality &
# equality = relational ==, !=
# relational = shift <, >, <=, >=
# shift = additive <<, >>
# additive = multiplicative +, -
# multiplicative = pm *, /, %
# pm = cast .*, ->*
def _parse_bin_op_expr(self, opId):
if opId + 1 == len(_expression_bin_ops):
def parser() -> ASTExpression:
return self._parse_cast_expression()
else:
def parser() -> ASTExpression:
return _parse_bin_op_expr(self, opId + 1)
exprs = []
ops = []
exprs.append(parser())
while True:
self.skip_ws()
pos = self.pos
oneMore = False
for op in _expression_bin_ops[opId]:
if op[0] in 'abcnox':
if not self.skip_word(op):
continue
else:
if not self.skip_string(op):
continue
if op == '&' and self.current_char == '&':
# don't split the && 'token'
self.pos -= 1
# and btw. && has lower precedence, so we are done
break
try:
expr = parser()
exprs.append(expr)
ops.append(op)
oneMore = True
break
except DefinitionError:
self.pos = pos
if not oneMore:
break
return ASTBinOpExpr(exprs, ops)
return _parse_bin_op_expr(self, 0)
def _parse_conditional_expression_tail(self, orExprHead: Any) -> ASTExpression:
# -> "?" expression ":" assignment-expression
return None
def _parse_assignment_expression(self) -> ASTExpression:
# -> conditional-expression
# | logical-or-expression assignment-operator initializer-clause
# -> conditional-expression ->
# logical-or-expression
# | logical-or-expression "?" expression ":" assignment-expression
# | logical-or-expression assignment-operator initializer-clause
exprs = []
ops = []
orExpr = self._parse_logical_or_expression()
exprs.append(orExpr)
# TODO: handle ternary with _parse_conditional_expression_tail
while True:
oneMore = False
self.skip_ws()
for op in _expression_assignment_ops:
if op[0] in 'abcnox':
if not self.skip_word(op):
continue
else:
if not self.skip_string(op):
continue
expr = self._parse_logical_or_expression()
exprs.append(expr)
ops.append(op)
oneMore = True
if not oneMore:
break
return ASTAssignmentExpr(exprs, ops)
def _parse_constant_expression(self) -> ASTExpression:
# -> conditional-expression
orExpr = self._parse_logical_or_expression()
# TODO: use _parse_conditional_expression_tail
return orExpr
def _parse_expression(self) -> ASTExpression:
# -> assignment-expression
# | expression "," assignment-expresion
# TODO: actually parse the second production
return self._parse_assignment_expression()
def _parse_expression_fallback(
self, end: List[str],
parser: Callable[[], ASTExpression],
allow: bool = True) -> ASTExpression:
# Stupidly "parse" an expression.
# 'end' should be a list of characters which ends the expression.
# first try to use the provided parser
prevPos = self.pos
try:
return parser()
except DefinitionError as e:
# some places (e.g., template parameters) we really don't want to use fallback,
# and for testing we may want to globally disable it
if not allow or not self.allowFallbackExpressionParsing:
raise
self.warn("Parsing of expression failed. Using fallback parser."
" Error was:\n%s" % e)
self.pos = prevPos
# and then the fallback scanning
assert end is not None
self.skip_ws()
startPos = self.pos
if self.match(_string_re):
value = self.matched_text
else:
# TODO: add handling of more bracket-like things, and quote handling
brackets = {'(': ')', '{': '}', '[': ']'}
symbols = [] # type: List[str]
while not self.eof:
if (len(symbols) == 0 and self.current_char in end):
break
if self.current_char in brackets.keys():
symbols.append(brackets[self.current_char])
elif len(symbols) > 0 and self.current_char == symbols[-1]:
symbols.pop()
self.pos += 1
if len(end) > 0 and self.eof:
self.fail("Could not find end of expression starting at %d."
% startPos)
value = self.definition[startPos:self.pos].strip()
return ASTFallbackExpr(value.strip())
def _parse_nested_name(self) -> ASTNestedName:
names = [] # type: List[Any]
self.skip_ws()
rooted = False
if self.skip_string('.'):
rooted = True
while 1:
self.skip_ws()
if not self.match(identifier_re):
self.fail("Expected identifier in nested name.")
identifier = self.matched_text
# make sure there isn't a keyword
if identifier in _keywords:
self.fail("Expected identifier in nested name, "
"got keyword: %s" % identifier)
ident = ASTIdentifier(identifier)
names.append(ident)
self.skip_ws()
if not self.skip_string('.'):
break
return ASTNestedName(names, rooted)
def _parse_trailing_type_spec(self) -> ASTTrailingTypeSpec:
# fundamental types
self.skip_ws()
for t in self._simple_fundamental_types:
if self.skip_word(t):
return ASTTrailingTypeSpecFundamental(t)
# TODO: this could/should be more strict
elements = []
if self.skip_word_and_ws('signed'):
elements.append('signed')
elif self.skip_word_and_ws('unsigned'):
elements.append('unsigned')
while 1:
if self.skip_word_and_ws('short'):
elements.append('short')
elif self.skip_word_and_ws('long'):
elements.append('long')
else:
break
if self.skip_word_and_ws('char'):
elements.append('char')
elif self.skip_word_and_ws('int'):
elements.append('int')
elif self.skip_word_and_ws('double'):
elements.append('double')
elif self.skip_word_and_ws('__int64'):
elements.append('__int64')
if len(elements) > 0:
return ASTTrailingTypeSpecFundamental(' '.join(elements))
# prefixed
prefix = None
self.skip_ws()
for k in self._prefix_keys:
if self.skip_word_and_ws(k):
prefix = k
break
nestedName = self._parse_nested_name()
return ASTTrailingTypeSpecName(prefix, nestedName)
def _parse_parameters(self, paramMode: str) -> ASTParameters:
self.skip_ws()
if not self.skip_string('('):
if paramMode == 'function':
self.fail('Expecting "(" in parameters.')
else:
return None
args = []
self.skip_ws()
if not self.skip_string(')'):
while 1:
self.skip_ws()
if self.skip_string('...'):
args.append(ASTFunctionParameter(None, True))
self.skip_ws()
if not self.skip_string(')'):
self.fail('Expected ")" after "..." in parameters.')
break
# note: it seems that function arguments can always be named,
# even in function pointers and similar.
arg = self._parse_type_with_init(outer=None, named='single')
# TODO: parse default parameters # TODO: didn't we just do that?
args.append(ASTFunctionParameter(arg))
self.skip_ws()
if self.skip_string(','):
continue
elif self.skip_string(')'):
break
else:
self.fail(
'Expecting "," or ")" in parameters, '
'got "%s".' % self.current_char)
return ASTParameters(args)
def _parse_decl_specs_simple(self, outer: str, typed: bool) -> ASTDeclSpecsSimple:
"""Just parse the simple ones."""
storage = None
threadLocal = None
inline = None
restrict = None
volatile = None
const = None
attrs = []
while 1: # accept any permutation of a subset of some decl-specs
self.skip_ws()
if not storage:
if outer == 'member':
if self.skip_word('auto'):
storage = 'auto'
continue
if self.skip_word('register'):
storage = 'register'
continue
if outer in ('member', 'function'):
if self.skip_word('static'):
storage = 'static'
continue
if self.skip_word('extern'):
storage = 'extern'
continue
if outer == 'member' and not threadLocal:
if self.skip_word('thread_local'):
threadLocal = 'thread_local'
continue
if self.skip_word('_Thread_local'):
threadLocal = '_Thread_local'
continue
if outer == 'function' and not inline:
inline = self.skip_word('inline')
if inline:
continue
if not restrict and typed:
restrict = self.skip_word('restrict')
if restrict:
continue
if not volatile and typed:
volatile = self.skip_word('volatile')
if volatile:
continue
if not const and typed:
const = self.skip_word('const')
if const:
continue
attr = self._parse_attribute()
if attr:
attrs.append(attr)
continue
break
return ASTDeclSpecsSimple(storage, threadLocal, inline,
restrict, volatile, const, attrs)
def _parse_decl_specs(self, outer: str, typed: bool = True) -> ASTDeclSpecs:
if outer:
if outer not in ('type', 'member', 'function'):
raise Exception('Internal error, unknown outer "%s".' % outer)
leftSpecs = self._parse_decl_specs_simple(outer, typed)
rightSpecs = None
if typed:
trailing = self._parse_trailing_type_spec()
rightSpecs = self._parse_decl_specs_simple(outer, typed)
else:
trailing = None
return ASTDeclSpecs(outer, leftSpecs, rightSpecs, trailing)
def _parse_declarator_name_suffix(
self, named: Union[bool, str], paramMode: str, typed: bool
) -> ASTDeclarator:
# now we should parse the name, and then suffixes
if named == 'maybe':
pos = self.pos
try:
declId = self._parse_nested_name()
except DefinitionError:
self.pos = pos
declId = None
elif named == 'single':
if self.match(identifier_re):
identifier = ASTIdentifier(self.matched_text)
declId = ASTNestedName([identifier], rooted=False)
else:
declId = None
elif named:
declId = self._parse_nested_name()
else:
declId = None
arrayOps = []
while 1:
self.skip_ws()
if typed and self.skip_string('['):
self.skip_ws()
static = False
const = False
volatile = False
restrict = False
while True:
if not static:
if self.skip_word_and_ws('static'):
static = True
continue
if not const:
if self.skip_word_and_ws('const'):
const = True
continue
if not volatile:
if self.skip_word_and_ws('volatile'):
volatile = True
continue
if not restrict:
if self.skip_word_and_ws('restrict'):
restrict = True
continue
break
vla = False if static else self.skip_string_and_ws('*')
if vla:
if not self.skip_string(']'):
self.fail("Expected ']' in end of array operator.")
size = None
else:
if self.skip_string(']'):
size = None
else:
def parser():
return self._parse_expression()
size = self._parse_expression_fallback([']'], parser)
self.skip_ws()
if not self.skip_string(']'):
self.fail("Expected ']' in end of array operator.")
arrayOps.append(ASTArray(static, const, volatile, restrict, vla, size))
else:
break
param = self._parse_parameters(paramMode)
if param is None and len(arrayOps) == 0:
# perhaps a bit-field
if named and paramMode == 'type' and typed:
self.skip_ws()
if self.skip_string(':'):
size = self._parse_constant_expression()
return ASTDeclaratorNameBitField(declId=declId, size=size)
return ASTDeclaratorNameParam(declId=declId, arrayOps=arrayOps,
param=param)
def _parse_declarator(self, named: Union[bool, str], paramMode: str,
typed: bool = True) -> ASTDeclarator:
# 'typed' here means 'parse return type stuff'
if paramMode not in ('type', 'function'):
raise Exception(
"Internal error, unknown paramMode '%s'." % paramMode)
prevErrors = []
self.skip_ws()
if typed and self.skip_string('*'):
self.skip_ws()
restrict = False
volatile = False
const = False
attrs = []
while 1:
if not restrict:
restrict = self.skip_word_and_ws('restrict')
if restrict:
continue
if not volatile:
volatile = self.skip_word_and_ws('volatile')
if volatile:
continue
if not const:
const = self.skip_word_and_ws('const')
if const:
continue
attr = self._parse_attribute()
if attr is not None:
attrs.append(attr)
continue
break
next = self._parse_declarator(named, paramMode, typed)
return ASTDeclaratorPtr(next=next,
restrict=restrict, volatile=volatile, const=const,
attrs=attrs)
if typed and self.current_char == '(': # note: peeking, not skipping
# maybe this is the beginning of params, try that first,
# otherwise assume it's noptr->declarator > ( ptr-declarator )
pos = self.pos
try:
# assume this is params
res = self._parse_declarator_name_suffix(named, paramMode,
typed)
return res
except DefinitionError as exParamQual:
msg = "If declarator-id with parameters"
if paramMode == 'function':
msg += " (e.g., 'void f(int arg)')"
prevErrors.append((exParamQual, msg))
self.pos = pos
try:
assert self.current_char == '('
self.skip_string('(')
# TODO: hmm, if there is a name, it must be in inner, right?
# TODO: hmm, if there must be parameters, they must b
# inside, right?
inner = self._parse_declarator(named, paramMode, typed)
if not self.skip_string(')'):
self.fail("Expected ')' in \"( ptr-declarator )\"")
next = self._parse_declarator(named=False,
paramMode="type",
typed=typed)
return ASTDeclaratorParen(inner=inner, next=next)
except DefinitionError as exNoPtrParen:
self.pos = pos
msg = "If parenthesis in noptr-declarator"
if paramMode == 'function':
msg += " (e.g., 'void (*f(int arg))(double)')"
prevErrors.append((exNoPtrParen, msg))
header = "Error in declarator"
raise self._make_multi_error(prevErrors, header)
pos = self.pos
try:
return self._parse_declarator_name_suffix(named, paramMode, typed)
except DefinitionError as e:
self.pos = pos
prevErrors.append((e, "If declarator-id"))
header = "Error in declarator or parameters"
raise self._make_multi_error(prevErrors, header)
def _parse_initializer(self, outer: str = None, allowFallback: bool = True
) -> ASTInitializer:
self.skip_ws()
if outer == 'member' and False: # TODO
bracedInit = self._parse_braced_init_list()
if bracedInit is not None:
return ASTInitializer(bracedInit, hasAssign=False)
if not self.skip_string('='):
return None
bracedInit = self._parse_braced_init_list()
if bracedInit is not None:
return ASTInitializer(bracedInit)
if outer == 'member':
fallbackEnd = [] # type: List[str]
elif outer is None: # function parameter
fallbackEnd = [',', ')']
else:
self.fail("Internal error, initializer for outer '%s' not "
"implemented." % outer)
def parser():
return self._parse_assignment_expression()
value = self._parse_expression_fallback(fallbackEnd, parser, allow=allowFallback)
return ASTInitializer(value)
def _parse_type(self, named: Union[bool, str], outer: str = None) -> ASTType:
"""
named=False|'maybe'|True: 'maybe' is e.g., for function objects which
doesn't need to name the arguments
"""
if outer: # always named
if outer not in ('type', 'member', 'function'):
raise Exception('Internal error, unknown outer "%s".' % outer)
assert named
if outer == 'type':
# We allow type objects to just be a name.
prevErrors = []
startPos = self.pos
# first try without the type
try:
declSpecs = self._parse_decl_specs(outer=outer, typed=False)
decl = self._parse_declarator(named=True, paramMode=outer,
typed=False)
self.assert_end(allowSemicolon=True)
except DefinitionError as exUntyped:
desc = "If just a name"
prevErrors.append((exUntyped, desc))
self.pos = startPos
try:
declSpecs = self._parse_decl_specs(outer=outer)
decl = self._parse_declarator(named=True, paramMode=outer)
except DefinitionError as exTyped:
self.pos = startPos
desc = "If typedef-like declaration"
prevErrors.append((exTyped, desc))
# Retain the else branch for easier debugging.
# TODO: it would be nice to save the previous stacktrace
# and output it here.
if True:
header = "Type must be either just a name or a "
header += "typedef-like declaration."
raise self._make_multi_error(prevErrors, header)
else:
# For testing purposes.
# do it again to get the proper traceback (how do you
# reliably save a traceback when an exception is
# constructed?)
self.pos = startPos
typed = True
declSpecs = self._parse_decl_specs(outer=outer, typed=typed)
decl = self._parse_declarator(named=True, paramMode=outer,
typed=typed)
elif outer == 'function':
declSpecs = self._parse_decl_specs(outer=outer)
decl = self._parse_declarator(named=True, paramMode=outer)
else:
paramMode = 'type'
if outer == 'member': # i.e., member
named = True
declSpecs = self._parse_decl_specs(outer=outer)
decl = self._parse_declarator(named=named, paramMode=paramMode)
return ASTType(declSpecs, decl)
def _parse_type_with_init(self, named: Union[bool, str], outer: str) -> ASTTypeWithInit:
if outer:
assert outer in ('type', 'member', 'function')
type = self._parse_type(outer=outer, named=named)
init = self._parse_initializer(outer=outer)
return ASTTypeWithInit(type, init)
def _parse_macro(self) -> ASTMacro:
self.skip_ws()
ident = self._parse_nested_name()
if ident is None:
self.fail("Expected identifier in macro definition.")
self.skip_ws()
if not self.skip_string_and_ws('('):
return ASTMacro(ident, None)
if self.skip_string(')'):
return ASTMacro(ident, [])
args = []
while 1:
self.skip_ws()
if self.skip_string('...'):
args.append(ASTMacroParameter(None, True))
self.skip_ws()
if not self.skip_string(')'):
self.fail('Expected ")" after "..." in macro parameters.')
break
if not self.match(identifier_re):
self.fail("Expected identifier in macro parameters.")
nn = ASTNestedName([ASTIdentifier(self.matched_text)], rooted=False)
arg = ASTMacroParameter(nn)
args.append(arg)
self.skip_ws()
if self.skip_string_and_ws(','):
continue
elif self.skip_string_and_ws(')'):
break
else:
self.fail("Expected identifier, ')', or ',' in macro parameter list.")
return ASTMacro(ident, args)
def _parse_struct(self) -> ASTStruct:
name = self._parse_nested_name()
return ASTStruct(name)
def _parse_union(self) -> ASTUnion:
name = self._parse_nested_name()
return ASTUnion(name)
def _parse_enum(self) -> ASTEnum:
name = self._parse_nested_name()
return ASTEnum(name)
def _parse_enumerator(self) -> ASTEnumerator:
name = self._parse_nested_name()
self.skip_ws()
init = None
if self.skip_string('='):
self.skip_ws()
def parser() -> ASTExpression:
return self._parse_constant_expression()
initVal = self._parse_expression_fallback([], parser)
init = ASTInitializer(initVal)
return ASTEnumerator(name, init)
def parse_declaration(self, objectType: str, directiveType: str) -> ASTDeclaration:
if objectType not in ('function', 'member',
'macro', 'struct', 'union', 'enum', 'enumerator', 'type'):
raise Exception('Internal error, unknown objectType "%s".' % objectType)
if directiveType not in ('function', 'member', 'var',
'macro', 'struct', 'union', 'enum', 'enumerator', 'type'):
raise Exception('Internal error, unknown directiveType "%s".' % directiveType)
declaration = None # type: Any
if objectType == 'member':
declaration = self._parse_type_with_init(named=True, outer='member')
elif objectType == 'function':
declaration = self._parse_type(named=True, outer='function')
elif objectType == 'macro':
declaration = self._parse_macro()
elif objectType == 'struct':
declaration = self._parse_struct()
elif objectType == 'union':
declaration = self._parse_union()
elif objectType == 'enum':
declaration = self._parse_enum()
elif objectType == 'enumerator':
declaration = self._parse_enumerator()
elif objectType == 'type':
declaration = self._parse_type(named=True, outer='type')
else:
assert False
if objectType != 'macro':
self.skip_ws()
semicolon = self.skip_string(';')
else:
semicolon = False
return ASTDeclaration(objectType, directiveType, declaration, semicolon)
def parse_namespace_object(self) -> ASTNestedName:
return self._parse_nested_name()
def parse_xref_object(self) -> ASTNestedName:
name = self._parse_nested_name()
# if there are '()' left, just skip them
self.skip_ws()
self.skip_string('()')
self.assert_end()
return name
def parse_expression(self) -> Union[ASTExpression, ASTType]:
pos = self.pos
res = None # type: Union[ASTExpression, ASTType]
try:
res = self._parse_expression()
self.skip_ws()
self.assert_end()
except DefinitionError as exExpr:
self.pos = pos
try:
res = self._parse_type(False)
self.skip_ws()
self.assert_end()
except DefinitionError as exType:
header = "Error when parsing (type) expression."
errs = []
errs.append((exExpr, "If expression"))
errs.append((exType, "If type"))
raise self._make_multi_error(errs, header)
return res
def _make_phony_error_name() -> ASTNestedName:
return ASTNestedName([ASTIdentifier("PhonyNameDueToError")], rooted=False)
class CObject(ObjectDescription):
"""
Description of a C language object.
"""
doc_field_types = [
TypedField('parameter', label=_('Parameters'),
names=('param', 'parameter', 'arg', 'argument'),
typerolename='type', typenames=('type',)),
Field('returnvalue', label=_('Returns'), has_arg=False,
names=('returns', 'return')),
Field('returntype', label=_('Return type'), has_arg=False,
names=('rtype',)),
]
def _add_enumerator_to_parent(self, ast: ASTDeclaration) -> None:
assert ast.objectType == 'enumerator'
# find the parent, if it exists && is an enum
# then add the name to the parent scope
symbol = ast.symbol
assert symbol
assert symbol.ident is not None
parentSymbol = symbol.parent
assert parentSymbol
if parentSymbol.parent is None:
# TODO: we could warn, but it is somewhat equivalent to
# enumeratorss, without the enum
return # no parent
parentDecl = parentSymbol.declaration
if parentDecl is None:
# the parent is not explicitly declared
# TODO: we could warn, but?
return
if parentDecl.objectType != 'enum':
# TODO: maybe issue a warning, enumerators in non-enums is weird,
# but it is somewhat equivalent to enumeratorss, without the enum
return
if parentDecl.directiveType != 'enum':
return
targetSymbol = parentSymbol.parent
s = targetSymbol.find_identifier(symbol.ident, matchSelf=False, recurseInAnon=True,
searchInSiblings=False)
if s is not None:
# something is already declared with that name
return
declClone = symbol.declaration.clone()
declClone.enumeratorScopedSymbol = symbol
Symbol(parent=targetSymbol, ident=symbol.ident,
declaration=declClone,
docname=self.env.docname)
def add_target_and_index(self, ast: ASTDeclaration, sig: str,
signode: TextElement) -> None:
ids = []
for i in range(1, _max_id + 1):
try:
id = ast.get_id(version=i)
ids.append(id)
except NoOldIdError:
assert i < _max_id
# let's keep the newest first
ids = list(reversed(ids))
newestId = ids[0]
assert newestId # shouldn't be None
name = ast.symbol.get_full_nested_name().get_display_string().lstrip('.')
if newestId not in self.state.document.ids:
# always add the newest id
assert newestId
signode['ids'].append(newestId)
# only add compatibility ids when there are no conflicts
for id in ids[1:]:
if not id: # is None when the element didn't exist in that version
continue
if id not in self.state.document.ids:
signode['ids'].append(id)
self.state.document.note_explicit_target(signode)
domain = cast(CDomain, self.env.get_domain('c'))
domain.note_object(name, self.objtype, newestId)
indexText = self.get_index_text(name)
self.indexnode['entries'].append(('single', indexText, newestId, '', None))
@property
def object_type(self) -> str:
raise NotImplementedError()
@property
def display_object_type(self) -> str:
return self.object_type
def get_index_text(self, name: str) -> str:
return _('%s (C %s)') % (name, self.display_object_type)
def parse_definition(self, parser: DefinitionParser) -> ASTDeclaration:
return parser.parse_declaration(self.object_type, self.objtype)
def describe_signature(self, signode: TextElement, ast: Any, options: Dict) -> None:
ast.describe_signature(signode, 'lastIsName', self.env, options)
def run(self) -> List[Node]:
env = self.state.document.settings.env # from ObjectDescription.run
if 'c:parent_symbol' not in env.temp_data:
root = env.domaindata['c']['root_symbol']
env.temp_data['c:parent_symbol'] = root
env.ref_context['c:parent_key'] = root.get_lookup_key()
# When multiple declarations are made in the same directive
# they need to know about each other to provide symbol lookup for function parameters.
# We use last_symbol to store the latest added declaration in a directive.
env.temp_data['c:last_symbol'] = None
return super().run()
def handle_signature(self, sig: str, signode: TextElement) -> ASTDeclaration:
parentSymbol = self.env.temp_data['c:parent_symbol'] # type: Symbol
parser = DefinitionParser(sig, location=signode, config=self.env.config)
try:
ast = self.parse_definition(parser)
parser.assert_end()
except DefinitionError as e:
logger.warning(e, location=signode)
# It is easier to assume some phony name than handling the error in
# the possibly inner declarations.
name = _make_phony_error_name()
symbol = parentSymbol.add_name(name)
self.env.temp_data['c:last_symbol'] = symbol
raise ValueError
try:
symbol = parentSymbol.add_declaration(ast, docname=self.env.docname)
# append the new declaration to the sibling list
assert symbol.siblingAbove is None
assert symbol.siblingBelow is None
symbol.siblingAbove = self.env.temp_data['c:last_symbol']
if symbol.siblingAbove is not None:
assert symbol.siblingAbove.siblingBelow is None
symbol.siblingAbove.siblingBelow = symbol
self.env.temp_data['c:last_symbol'] = symbol
except _DuplicateSymbolError as e:
# Assume we are actually in the old symbol,
# instead of the newly created duplicate.
self.env.temp_data['c:last_symbol'] = e.symbol
logger.warning("Duplicate declaration, %s", sig, location=signode)
if ast.objectType == 'enumerator':
self._add_enumerator_to_parent(ast)
# note: handle_signature may be called multiple time per directive,
# if it has multiple signatures, so don't mess with the original options.
options = dict(self.options)
self.describe_signature(signode, ast, options)
return ast
def before_content(self) -> None:
lastSymbol = self.env.temp_data['c:last_symbol'] # type: Symbol
assert lastSymbol
self.oldParentSymbol = self.env.temp_data['c:parent_symbol']
self.oldParentKey = self.env.ref_context['c:parent_key'] # type: LookupKey
self.env.temp_data['c:parent_symbol'] = lastSymbol
self.env.ref_context['c:parent_key'] = lastSymbol.get_lookup_key()
def after_content(self) -> None:
self.env.temp_data['c:parent_symbol'] = self.oldParentSymbol
self.env.ref_context['c:parent_key'] = self.oldParentKey
def make_old_id(self, name: str) -> str:
"""Generate old styled node_id for C objects.
.. note:: Old Styled node_id was used until Sphinx-3.0.
This will be removed in Sphinx-5.0.
"""
return 'c.' + name
class CMemberObject(CObject):
object_type = 'member'
@property
def display_object_type(self) -> str:
# the distinction between var and member is only cosmetic
assert self.objtype in ('member', 'var')
return self.objtype
class CFunctionObject(CObject):
object_type = 'function'
class CMacroObject(CObject):
object_type = 'macro'
class CStructObject(CObject):
object_type = 'struct'
class CUnionObject(CObject):
object_type = 'union'
class CEnumObject(CObject):
object_type = 'enum'
class CEnumeratorObject(CObject):
object_type = 'enumerator'
class CTypeObject(CObject):
object_type = 'type'
class CNamespaceObject(SphinxDirective):
"""
This directive is just to tell Sphinx that we're documenting stuff in
namespace foo.
"""
has_content = False
required_arguments = 1
optional_arguments = 0
final_argument_whitespace = True
option_spec = {} # type: Dict
def run(self) -> List[Node]:
rootSymbol = self.env.domaindata['c']['root_symbol']
if self.arguments[0].strip() in ('NULL', '0', 'nullptr'):
symbol = rootSymbol
stack = [] # type: List[Symbol]
else:
parser = DefinitionParser(self.arguments[0],
location=self.get_source_info(),
config=self.env.config)
try:
name = parser.parse_namespace_object()
parser.assert_end()
except DefinitionError as e:
logger.warning(e, location=self.get_source_info())
name = _make_phony_error_name()
symbol = rootSymbol.add_name(name)
stack = [symbol]
self.env.temp_data['c:parent_symbol'] = symbol
self.env.temp_data['c:namespace_stack'] = stack
self.env.ref_context['c:parent_key'] = symbol.get_lookup_key()
return []
class CNamespacePushObject(SphinxDirective):
has_content = False
required_arguments = 1
optional_arguments = 0
final_argument_whitespace = True
option_spec = {} # type: Dict
def run(self) -> List[Node]:
if self.arguments[0].strip() in ('NULL', '0', 'nullptr'):
return []
parser = DefinitionParser(self.arguments[0],
location=self.get_source_info(),
config=self.env.config)
try:
name = parser.parse_namespace_object()
parser.assert_end()
except DefinitionError as e:
logger.warning(e, location=self.get_source_info())
name = _make_phony_error_name()
oldParent = self.env.temp_data.get('c:parent_symbol', None)
if not oldParent:
oldParent = self.env.domaindata['c']['root_symbol']
symbol = oldParent.add_name(name)
stack = self.env.temp_data.get('c:namespace_stack', [])
stack.append(symbol)
self.env.temp_data['c:parent_symbol'] = symbol
self.env.temp_data['c:namespace_stack'] = stack
self.env.ref_context['c:parent_key'] = symbol.get_lookup_key()
return []
class CNamespacePopObject(SphinxDirective):
has_content = False
required_arguments = 0
optional_arguments = 0
final_argument_whitespace = True
option_spec = {} # type: Dict
def run(self) -> List[Node]:
stack = self.env.temp_data.get('c:namespace_stack', None)
if not stack or len(stack) == 0:
logger.warning("C namespace pop on empty stack. Defaulting to gobal scope.",
location=self.get_source_info())
stack = []
else:
stack.pop()
if len(stack) > 0:
symbol = stack[-1]
else:
symbol = self.env.domaindata['c']['root_symbol']
self.env.temp_data['c:parent_symbol'] = symbol
self.env.temp_data['c:namespace_stack'] = stack
self.env.ref_context['cp:parent_key'] = symbol.get_lookup_key()
return []
class CXRefRole(XRefRole):
def process_link(self, env: BuildEnvironment, refnode: Element,
has_explicit_title: bool, title: str, target: str) -> Tuple[str, str]:
refnode.attributes.update(env.ref_context)
if not has_explicit_title:
# major hax: replace anon names via simple string manipulation.
# Can this actually fail?
title = anon_identifier_re.sub("[anonymous]", str(title))
if not has_explicit_title:
target = target.lstrip('~') # only has a meaning for the title
# if the first character is a tilde, don't display the module/class
# parts of the contents
if title[0:1] == '~':
title = title[1:]
dot = title.rfind('.')
if dot != -1:
title = title[dot + 1:]
return title, target
class CExprRole(SphinxRole):
def __init__(self, asCode: bool) -> None:
super().__init__()
if asCode:
# render the expression as inline code
self.class_type = 'c-expr'
self.node_type = nodes.literal # type: Type[TextElement]
else:
# render the expression as inline text
self.class_type = 'c-texpr'
self.node_type = nodes.inline
def run(self) -> Tuple[List[Node], List[system_message]]:
text = self.text.replace('\n', ' ')
parser = DefinitionParser(text, location=self.get_source_info(),
config=self.env.config)
# attempt to mimic XRefRole classes, except that...
classes = ['xref', 'c', self.class_type]
try:
ast = parser.parse_expression()
except DefinitionError as ex:
logger.warning('Unparseable C expression: %r\n%s', text, ex,
location=self.get_source_info())
# see below
return [self.node_type(text, text, classes=classes)], []
parentSymbol = self.env.temp_data.get('cpp:parent_symbol', None)
if parentSymbol is None:
parentSymbol = self.env.domaindata['c']['root_symbol']
# ...most if not all of these classes should really apply to the individual references,
# not the container node
signode = self.node_type(classes=classes)
ast.describe_signature(signode, 'markType', self.env, parentSymbol)
return [signode], []
class CDomain(Domain):
"""C language domain."""
name = 'c'
label = 'C'
object_types = {
'function': ObjType(_('function'), 'func'),
'member': ObjType(_('member'), 'member'),
'macro': ObjType(_('macro'), 'macro'),
'type': ObjType(_('type'), 'type'),
'var': ObjType(_('variable'), 'data'),
}
directives = {
'member': CMemberObject,
'var': CMemberObject,
'function': CFunctionObject,
'macro': CMacroObject,
'struct': CStructObject,
'union': CUnionObject,
'enum': CEnumObject,
'enumerator': CEnumeratorObject,
'type': CTypeObject,
# scope control
'namespace': CNamespaceObject,
'namespace-push': CNamespacePushObject,
'namespace-pop': CNamespacePopObject,
}
roles = {
'member': CXRefRole(),
'data': CXRefRole(),
'var': CXRefRole(),
'func': CXRefRole(fix_parens=True),
'macro': CXRefRole(),
'struct': CXRefRole(),
'union': CXRefRole(),
'enum': CXRefRole(),
'enumerator': CXRefRole(),
'type': CXRefRole(),
'expr': CExprRole(asCode=True),
'texpr': CExprRole(asCode=False)
}
initial_data = {
'root_symbol': Symbol(None, None, None, None),
'objects': {}, # fullname -> docname, node_id, objtype
} # type: Dict[str, Union[Symbol, Dict[str, Tuple[str, str, str]]]]
@property
def objects(self) -> Dict[str, Tuple[str, str, str]]:
return self.data.setdefault('objects', {}) # fullname -> docname, node_id, objtype
def note_object(self, name: str, objtype: str, node_id: str, location: Any = None) -> None:
if name in self.objects:
docname = self.objects[name][0]
logger.warning(__('Duplicate C object description of %s, '
'other instance in %s, use :noindex: for one of them'),
name, docname, location=location)
self.objects[name] = (self.env.docname, node_id, objtype)
def clear_doc(self, docname: str) -> None:
if Symbol.debug_show_tree:
print("clear_doc:", docname)
print("\tbefore:")
print(self.data['root_symbol'].dump(1))
print("\tbefore end")
rootSymbol = self.data['root_symbol']
rootSymbol.clear_doc(docname)
if Symbol.debug_show_tree:
print("\tafter:")
print(self.data['root_symbol'].dump(1))
print("\tafter end")
print("clear_doc end:", docname)
for fullname, (fn, _id, _l) in list(self.objects.items()):
if fn == docname:
del self.objects[fullname]
def process_doc(self, env: BuildEnvironment, docname: str,
document: nodes.document) -> None:
if Symbol.debug_show_tree:
print("process_doc:", docname)
print(self.data['root_symbol'].dump(0))
print("process_doc end:", docname)
def process_field_xref(self, pnode: pending_xref) -> None:
pnode.attributes.update(self.env.ref_context)
def merge_domaindata(self, docnames: List[str], otherdata: Dict) -> None:
if Symbol.debug_show_tree:
print("merge_domaindata:")
print("\tself:")
print(self.data['root_symbol'].dump(1))
print("\tself end")
print("\tother:")
print(otherdata['root_symbol'].dump(1))
print("\tother end")
print("merge_domaindata end")
self.data['root_symbol'].merge_with(otherdata['root_symbol'],
docnames, self.env)
ourObjects = self.data['objects']
for fullname, (fn, id_, objtype) in otherdata['objects'].items():
if fn in docnames:
if fullname in ourObjects:
msg = __("Duplicate declaration, also defined in '%s'.\n"
"Name of declaration is '%s'.")
msg = msg % (ourObjects[fullname], fullname)
logger.warning(msg, location=fn)
else:
ourObjects[fullname] = (fn, id_, objtype)
def _resolve_xref_inner(self, env: BuildEnvironment, fromdocname: str, builder: Builder,
typ: str, target: str, node: pending_xref,
contnode: Element) -> Tuple[Element, str]:
parser = DefinitionParser(target, location=node, config=env.config)
try:
name = parser.parse_xref_object()
except DefinitionError as e:
logger.warning('Unparseable C cross-reference: %r\n%s', target, e,
location=node)
return None, None
parentKey = node.get("c:parent_key", None) # type: LookupKey
rootSymbol = self.data['root_symbol']
if parentKey:
parentSymbol = rootSymbol.direct_lookup(parentKey) # type: Symbol
if not parentSymbol:
print("Target: ", target)
print("ParentKey: ", parentKey)
print(rootSymbol.dump(1))
assert parentSymbol # should be there
else:
parentSymbol = rootSymbol
s = parentSymbol.find_declaration(name, typ,
matchSelf=True, recurseInAnon=True)
if s is None or s.declaration is None:
return None, None
# TODO: check role type vs. object type
declaration = s.declaration
displayName = name.get_display_string()
docname = s.docname
assert docname
return make_refnode(builder, fromdocname, docname,
declaration.get_newest_id(), contnode, displayName
), declaration.objectType
def resolve_xref(self, env: BuildEnvironment, fromdocname: str, builder: Builder,
typ: str, target: str, node: pending_xref,
contnode: Element) -> Element:
return self._resolve_xref_inner(env, fromdocname, builder, typ,
target, node, contnode)[0]
def resolve_any_xref(self, env: BuildEnvironment, fromdocname: str, builder: Builder,
target: str, node: pending_xref, contnode: Element
) -> List[Tuple[str, Element]]:
with logging.suppress_logging():
retnode, objtype = self._resolve_xref_inner(env, fromdocname, builder,
'any', target, node, contnode)
if retnode:
return [('c:' + self.role_for_objtype(objtype), retnode)]
return []
def get_objects(self) -> Iterator[Tuple[str, str, str, str, str, int]]:
for refname, (docname, node_id, objtype) in list(self.objects.items()):
yield (refname, refname, objtype, docname, node_id, 1)
def setup(app: Sphinx) -> Dict[str, Any]:
app.add_domain(CDomain)
app.add_config_value("c_id_attributes", [], 'env')
app.add_config_value("c_paren_attributes", [], 'env')
return {
'version': 'builtin',
'env_version': 2,
'parallel_read_safe': True,
'parallel_write_safe': True,
}
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