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test_c_parser.py
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test_c_parser.py
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#!/usr/bin/env python
import pprint
import re
import os, sys
import io
import unittest
sys.path[0:0] = ['.', '..']
from pycparser import c_parser
from pycparser.c_ast import *
from pycparser.c_parser import CParser, Coord, ParseError
_c_parser = c_parser.CParser(
lex_optimize=False,
yacc_debug=True,
yacc_optimize=False,
yacctab='yacctab')
def expand_decl(decl):
""" Converts the declaration into a nested list.
"""
typ = type(decl)
if typ == TypeDecl:
return ['TypeDecl', expand_decl(decl.type)]
elif typ == IdentifierType:
return ['IdentifierType', decl.names]
elif typ == ID:
return ['ID', decl.name]
elif typ in [Struct, Union]:
decls = [expand_decl(d) for d in decl.decls or []]
return [typ.__name__, decl.name, decls]
elif typ == Enum:
if decl.values is None:
values = None
else:
assert isinstance(decl.values, EnumeratorList)
values = [enum.name for enum in decl.values.enumerators]
return ['Enum', decl.name, values]
else:
nested = expand_decl(decl.type)
if typ == Decl:
if decl.quals:
return ['Decl', decl.quals, decl.name, nested]
else:
return ['Decl', decl.name, nested]
elif typ == Typename: # for function parameters
if decl.quals:
return ['Typename', decl.quals, nested]
else:
return ['Typename', nested]
elif typ == ArrayDecl:
dimval = decl.dim.value if decl.dim else ''
return ['ArrayDecl', dimval, decl.dim_quals, nested]
elif typ == PtrDecl:
if decl.quals:
return ['PtrDecl', decl.quals, nested]
else:
return ['PtrDecl', nested]
elif typ == Typedef:
return ['Typedef', decl.name, nested]
elif typ == FuncDecl:
if decl.args:
params = [expand_decl(param) for param in decl.args.params]
else:
params = []
return ['FuncDecl', params, nested]
def expand_init(init):
""" Converts an initialization into a nested list
"""
typ = type(init)
if typ == NamedInitializer:
des = [expand_init(dp) for dp in init.name]
return (des, expand_init(init.expr))
elif typ in (InitList, ExprList):
return [expand_init(expr) for expr in init.exprs]
elif typ == Constant:
return ['Constant', init.type, init.value]
elif typ == ID:
return ['ID', init.name]
elif typ == UnaryOp:
return ['UnaryOp', init.op, expand_decl(init.expr)]
class TestCParser_base(unittest.TestCase):
def parse(self, txt, filename=''):
return self.cparser.parse(txt, filename)
def setUp(self):
self.cparser = _c_parser
def assert_coord(self, node, line, column=None, file=None):
self.assertEqual(node.coord.line, line)
if column is not None:
self.assertEqual(node.coord.column, column)
if file:
self.assertEqual(node.coord.file, file)
class TestCParser_fundamentals(TestCParser_base):
def get_decl(self, txt, index=0):
""" Given a source and an index returns the expanded
declaration at that index.
FileAST holds a list of 'external declarations'.
index is the offset of the desired declaration in that
list.
"""
t = self.parse(txt).ext[index]
return expand_decl(t)
def get_decl_init(self, txt, index=0):
""" Returns the expanded initializer of the declaration
at index.
"""
t = self.parse(txt).ext[index]
return expand_init(t.init)
def test_FileAST(self):
t = self.parse('int a; char c;')
self.assertIsInstance(t, FileAST)
self.assertEqual(len(t.ext), 2)
# empty file
t2 = self.parse('')
self.assertIsInstance(t2, FileAST)
self.assertEqual(len(t2.ext), 0)
def test_empty_toplevel_decl(self):
code = 'int foo;;'
t = self.parse(code)
self.assertIsInstance(t, FileAST)
self.assertEqual(len(t.ext), 1)
self.assertEqual(self.get_decl(code),
['Decl', 'foo',
['TypeDecl', ['IdentifierType', ['int']]]])
def test_initial_semi(self):
t = self.parse(';')
self.assertEqual(len(t.ext), 0)
t = self.parse(';int foo;')
self.assertEqual(len(t.ext), 1)
self.assertEqual(expand_decl(t.ext[0]),
['Decl', 'foo',
['TypeDecl', ['IdentifierType', ['int']]]])
def test_coords(self):
""" Tests the "coordinates" of parsed elements - file
name, line and column numbers, with modification
insterted by #line directives.
"""
self.assert_coord(self.parse('int a;').ext[0], 1, 5)
t1 = """
int a;
int b;\n\n
int c;
"""
f1 = self.parse(t1, filename='test.c')
self.assert_coord(f1.ext[0], 2, 13, 'test.c')
self.assert_coord(f1.ext[1], 3, 13, 'test.c')
self.assert_coord(f1.ext[2], 6, 13, 'test.c')
t1_1 = '''
int main() {
k = p;
printf("%d", b);
return 0;
}'''
f1_1 = self.parse(t1_1, filename='test.c')
self.assert_coord(f1_1.ext[0].body.block_items[0], 3, 13, 'test.c')
self.assert_coord(f1_1.ext[0].body.block_items[1], 4, 13, 'test.c')
t1_2 = '''
int main () {
int p = (int) k;
}'''
f1_2 = self.parse(t1_2, filename='test.c')
# make sure that the Cast has a coord (issue 23)
self.assert_coord(f1_2.ext[0].body.block_items[0].init, 3, 21, file='test.c')
t2 = """
#line 99
int c;
"""
self.assert_coord(self.parse(t2).ext[0], 99, 13)
t3 = """
int dsf;
char p;
#line 3000 "in.h"
char d;
"""
f3 = self.parse(t3, filename='test.c')
self.assert_coord(f3.ext[0], 2, 13, 'test.c')
self.assert_coord(f3.ext[1], 3, 14, 'test.c')
self.assert_coord(f3.ext[2], 3000, 14, 'in.h')
t4 = """
#line 20 "restore.h"
int maydler(char);
#line 30 "includes/daween.ph"
long j, k;
#line 50000
char* ro;
"""
f4 = self.parse(t4, filename='myb.c')
self.assert_coord(f4.ext[0], 20, 13, 'restore.h')
self.assert_coord(f4.ext[1], 30, 14, 'includes/daween.ph')
self.assert_coord(f4.ext[2], 30, 17, 'includes/daween.ph')
self.assert_coord(f4.ext[3], 50000, 13, 'includes/daween.ph')
t5 = """
int
#line 99
c;
"""
self.assert_coord(self.parse(t5).ext[0], 99, 9)
# coord for ellipsis
t6 = """
int foo(int j,
...) {
}"""
f6 = self.parse(t6, filename='z.c')
self.assert_coord(self.parse(t6).ext[0].decl.type.args.params[1], 3, 17)
def test_forloop_coord(self):
t = '''\
void foo() {
for(int z=0; z<4;
z++){}
}
'''
s = self.parse(t, filename='f.c')
forloop = s.ext[0].body.block_items[0]
self.assert_coord(forloop.init, 2, 13, 'f.c')
self.assert_coord(forloop.cond, 2, 26, 'f.c')
self.assert_coord(forloop.next, 3, 17, 'f.c')
def test_simple_decls(self):
self.assertEqual(self.get_decl('int a;'),
['Decl', 'a', ['TypeDecl', ['IdentifierType', ['int']]]])
self.assertEqual(self.get_decl('unsigned int a;'),
['Decl', 'a', ['TypeDecl', ['IdentifierType', ['unsigned', 'int']]]])
self.assertEqual(self.get_decl('_Bool a;'),
['Decl', 'a', ['TypeDecl', ['IdentifierType', ['_Bool']]]])
self.assertEqual(self.get_decl('float _Complex fcc;'),
['Decl', 'fcc', ['TypeDecl', ['IdentifierType', ['float', '_Complex']]]])
self.assertEqual(self.get_decl('char* string;'),
['Decl', 'string',
['PtrDecl', ['TypeDecl', ['IdentifierType', ['char']]]]])
self.assertEqual(self.get_decl('long ar[15];'),
['Decl', 'ar',
['ArrayDecl', '15', [],
['TypeDecl', ['IdentifierType', ['long']]]]])
self.assertEqual(self.get_decl('long long ar[15];'),
['Decl', 'ar',
['ArrayDecl', '15', [],
['TypeDecl', ['IdentifierType', ['long', 'long']]]]])
self.assertEqual(self.get_decl('unsigned ar[];'),
['Decl', 'ar',
['ArrayDecl', '', [],
['TypeDecl', ['IdentifierType', ['unsigned']]]]])
self.assertEqual(self.get_decl('int strlen(char* s);'),
['Decl', 'strlen',
['FuncDecl',
[['Decl', 's',
['PtrDecl',
['TypeDecl', ['IdentifierType', ['char']]]]]],
['TypeDecl', ['IdentifierType', ['int']]]]])
self.assertEqual(self.get_decl('int strcmp(char* s1, char* s2);'),
['Decl', 'strcmp',
['FuncDecl',
[ ['Decl', 's1',
['PtrDecl', ['TypeDecl', ['IdentifierType', ['char']]]]],
['Decl', 's2',
['PtrDecl', ['TypeDecl', ['IdentifierType', ['char']]]]]
],
['TypeDecl', ['IdentifierType', ['int']]]]])
# function return values and parameters may not have type information
self.assertEqual(self.get_decl('extern foobar(foo, bar);'),
['Decl', 'foobar',
['FuncDecl',
[ ['ID', 'foo'],
['ID', 'bar']
],
['TypeDecl', ['IdentifierType', ['int']]]]])
def test_int128(self):
self.assertEqual(self.get_decl('__int128 a;'),
['Decl', 'a', ['TypeDecl', ['IdentifierType', ['__int128']]]])
def test_nested_decls(self): # the fun begins
self.assertEqual(self.get_decl('char** ar2D;'),
['Decl', 'ar2D',
['PtrDecl', ['PtrDecl',
['TypeDecl', ['IdentifierType', ['char']]]]]])
self.assertEqual(self.get_decl('int (*a)[1][2];'),
['Decl', 'a',
['PtrDecl',
['ArrayDecl', '1', [],
['ArrayDecl', '2', [],
['TypeDecl', ['IdentifierType', ['int']]]]]]])
self.assertEqual(self.get_decl('int *a[1][2];'),
['Decl', 'a',
['ArrayDecl', '1', [],
['ArrayDecl', '2', [],
['PtrDecl', ['TypeDecl', ['IdentifierType', ['int']]]]]]])
self.assertEqual(self.get_decl('char* const* p;'),
['Decl', 'p',
['PtrDecl', ['PtrDecl', ['const'],
['TypeDecl', ['IdentifierType', ['char']]]]]])
self.assertEqual(self.get_decl('char* * const p;'),
['Decl', 'p',
['PtrDecl', ['const'], ['PtrDecl',
['TypeDecl', ['IdentifierType', ['char']]]]]])
self.assertEqual(self.get_decl('char ***ar3D[40];'),
['Decl', 'ar3D',
['ArrayDecl', '40', [],
['PtrDecl', ['PtrDecl', ['PtrDecl',
['TypeDecl', ['IdentifierType', ['char']]]]]]]])
self.assertEqual(self.get_decl('char (***ar3D)[40];'),
['Decl', 'ar3D',
['PtrDecl', ['PtrDecl', ['PtrDecl',
['ArrayDecl', '40', [], ['TypeDecl', ['IdentifierType', ['char']]]]]]]])
self.assertEqual(self.get_decl('int (*x[4])(char, int);'),
['Decl', 'x',
['ArrayDecl', '4', [],
['PtrDecl',
['FuncDecl',
[ ['Typename', ['TypeDecl', ['IdentifierType', ['char']]]],
['Typename', ['TypeDecl', ['IdentifierType', ['int']]]]],
['TypeDecl', ['IdentifierType', ['int']]]]]]])
self.assertEqual(self.get_decl('char *(*(**foo [][8])())[];'),
['Decl', 'foo',
['ArrayDecl', '', [],
['ArrayDecl', '8', [],
['PtrDecl', ['PtrDecl',
['FuncDecl',
[],
['PtrDecl',
['ArrayDecl', '', [],
['PtrDecl',
['TypeDecl',
['IdentifierType', ['char']]]]]]]]]]]])
# explore named and unnamed function pointer parameters,
# with and without qualifiers
# unnamed w/o quals
self.assertEqual(self.get_decl('int (*k)(int);'),
['Decl', 'k',
['PtrDecl',
['FuncDecl',
[['Typename', ['TypeDecl', ['IdentifierType', ['int']]]]],
['TypeDecl', ['IdentifierType', ['int']]]]]])
# unnamed w/ quals
self.assertEqual(self.get_decl('int (*k)(const int);'),
['Decl', 'k',
['PtrDecl',
['FuncDecl',
[['Typename', ['const'], ['TypeDecl', ['IdentifierType', ['int']]]]],
['TypeDecl', ['IdentifierType', ['int']]]]]])
# named w/o quals
self.assertEqual(self.get_decl('int (*k)(int q);'),
['Decl', 'k',
['PtrDecl',
['FuncDecl',
[['Decl', 'q', ['TypeDecl', ['IdentifierType', ['int']]]]],
['TypeDecl', ['IdentifierType', ['int']]]]]])
# named w/ quals
self.assertEqual(self.get_decl('int (*k)(const volatile int q);'),
['Decl', 'k',
['PtrDecl',
['FuncDecl',
[['Decl', ['const', 'volatile'], 'q',
['TypeDecl', ['IdentifierType', ['int']]]]],
['TypeDecl', ['IdentifierType', ['int']]]]]])
self.assertEqual(self.get_decl('int (*k)(const volatile int* q);'),
['Decl', 'k',
['PtrDecl',
['FuncDecl',
[['Decl', ['const', 'volatile'], 'q',
['PtrDecl', ['TypeDecl', ['IdentifierType', ['int']]]]]],
['TypeDecl', ['IdentifierType', ['int']]]]]])
# restrict qualifier
self.assertEqual(self.get_decl('int (*k)(restrict int* q);'),
['Decl', 'k',
['PtrDecl',
['FuncDecl',
[['Decl', ['restrict'], 'q',
['PtrDecl',
['TypeDecl', ['IdentifierType', ['int']]]]]],
['TypeDecl', ['IdentifierType', ['int']]]]]])
def test_func_decls_with_array_dim_qualifiers(self):
# named function parameter
self.assertEqual(self.get_decl('int zz(int p[static 10]);'),
['Decl', 'zz',
['FuncDecl',
[['Decl', 'p', ['ArrayDecl', '10', ['static'],
['TypeDecl', ['IdentifierType', ['int']]]]]],
['TypeDecl', ['IdentifierType', ['int']]]]])
self.assertEqual(self.get_decl('int zz(int p[const 10]);'),
['Decl', 'zz',
['FuncDecl',
[['Decl', 'p', ['ArrayDecl', '10', ['const'],
['TypeDecl', ['IdentifierType', ['int']]]]]],
['TypeDecl', ['IdentifierType', ['int']]]]])
self.assertEqual(self.get_decl('int zz(int p[restrict][5]);'),
['Decl', 'zz',
['FuncDecl',
[['Decl', 'p', ['ArrayDecl', '', ['restrict'],
['ArrayDecl', '5', [],
['TypeDecl', ['IdentifierType', ['int']]]]]]],
['TypeDecl', ['IdentifierType', ['int']]]]])
self.assertEqual(self.get_decl('int zz(int p[const restrict static 10][5]);'),
['Decl', 'zz',
['FuncDecl',
[['Decl', 'p', ['ArrayDecl', '10', ['const', 'restrict', 'static'],
['ArrayDecl', '5', [],
['TypeDecl', ['IdentifierType', ['int']]]]]]],
['TypeDecl', ['IdentifierType', ['int']]]]])
# unnamed function parameter
self.assertEqual(self.get_decl('int zz(int [const 10]);'),
['Decl', 'zz',
['FuncDecl',
[['Typename', ['ArrayDecl', '10', ['const'],
['TypeDecl', ['IdentifierType', ['int']]]]]],
['TypeDecl', ['IdentifierType', ['int']]]]])
self.assertEqual(self.get_decl('int zz(int [restrict][5]);'),
['Decl', 'zz',
['FuncDecl',
[['Typename', ['ArrayDecl', '', ['restrict'],
['ArrayDecl', '5', [],
['TypeDecl', ['IdentifierType', ['int']]]]]]],
['TypeDecl', ['IdentifierType', ['int']]]]])
self.assertEqual(self.get_decl('int zz(int [const restrict volatile 10][5]);'),
['Decl', 'zz',
['FuncDecl',
[['Typename', ['ArrayDecl', '10', ['const', 'restrict', 'volatile'],
['ArrayDecl', '5', [],
['TypeDecl', ['IdentifierType', ['int']]]]]]],
['TypeDecl', ['IdentifierType', ['int']]]]])
def test_qualifiers_storage_specifiers(self):
def assert_qs(txt, index, quals, storage):
d = self.parse(txt).ext[index]
self.assertEqual(d.quals, quals)
self.assertEqual(d.storage, storage)
assert_qs("extern int p;", 0, [], ['extern'])
assert_qs("const long p = 6;", 0, ['const'], [])
d1 = "static const int p, q, r;"
for i in range(3):
assert_qs(d1, i, ['const'], ['static'])
d2 = "static char * const p;"
assert_qs(d2, 0, [], ['static'])
pdecl = self.parse(d2).ext[0].type
self.assertIsInstance(pdecl, PtrDecl)
self.assertEqual(pdecl.quals, ['const'])
def test_sizeof(self):
e = """
void foo()
{
int a = sizeof k;
int b = sizeof(int);
int c = sizeof(int**);;
char* p = "just to make sure this parses w/o error...";
int d = sizeof(int());
}
"""
compound = self.parse(e).ext[0].body
s1 = compound.block_items[0].init
self.assertIsInstance(s1, UnaryOp)
self.assertEqual(s1.op, 'sizeof')
self.assertIsInstance(s1.expr, ID)
self.assertEqual(s1.expr.name, 'k')
s2 = compound.block_items[1].init
self.assertEqual(expand_decl(s2.expr),
['Typename', ['TypeDecl', ['IdentifierType', ['int']]]])
s3 = compound.block_items[2].init
self.assertEqual(expand_decl(s3.expr),
['Typename',
['PtrDecl',
['PtrDecl',
['TypeDecl',
['IdentifierType', ['int']]]]]])
def test_offsetof(self):
def expand_ref(n):
if isinstance(n, StructRef):
return ['StructRef', expand_ref(n.name), expand_ref(n.field)]
elif isinstance(n, ArrayRef):
return ['ArrayRef', expand_ref(n.name), expand_ref(n.subscript)]
elif isinstance(n, ID):
return ['ID', n.name]
elif isinstance(n, Constant):
return ['Constant', n.type, n.value]
else:
raise TypeError("Unexpected type " + n.__class__.__name__)
e = """
void foo() {
int a = offsetof(struct S, p);
a.b = offsetof(struct sockaddr, sp) + strlen(bar);
int a = offsetof(struct S, p.q.r);
int a = offsetof(struct S, p[5].q[4][5]);
}
"""
compound = self.parse(e).ext[0].body
s1 = compound.block_items[0].init
self.assertIsInstance(s1, FuncCall)
self.assertIsInstance(s1.name, ID)
self.assertEqual(s1.name.name, 'offsetof')
self.assertIsInstance(s1.args.exprs[0], Typename)
self.assertIsInstance(s1.args.exprs[1], ID)
s3 = compound.block_items[2].init
self.assertIsInstance(s3.args.exprs[1], StructRef)
self.assertEqual(expand_ref(s3.args.exprs[1]),
['StructRef',
['StructRef', ['ID', 'p'], ['ID', 'q']],
['ID', 'r']])
s4 = compound.block_items[3].init
self.assertIsInstance(s4.args.exprs[1], ArrayRef)
self.assertEqual(expand_ref(s4.args.exprs[1]),
['ArrayRef',
['ArrayRef',
['StructRef',
['ArrayRef', ['ID', 'p'], ['Constant', 'int', '5']],
['ID', 'q']],
['Constant', 'int', '4']],
['Constant', 'int', '5']])
def test_compound_statement(self):
e = """
void foo() {
}
"""
compound = self.parse(e).ext[0].body
self.assertIsInstance(compound, Compound)
self.assert_coord(compound, 2)
# The C99 compound literal feature
#
def test_compound_literals(self):
ps1 = self.parse(r'''
void foo() {
p = (long long){k};
tc = (struct jk){.a = {1, 2}, .b[0] = t};
}''')
compound = ps1.ext[0].body.block_items[0].rvalue
self.assertEqual(expand_decl(compound.type),
['Typename', ['TypeDecl', ['IdentifierType', ['long', 'long']]]])
self.assertEqual(expand_init(compound.init),
[['ID', 'k']])
compound = ps1.ext[0].body.block_items[1].rvalue
self.assertEqual(expand_decl(compound.type),
['Typename', ['TypeDecl', ['Struct', 'jk', []]]])
self.assertEqual(expand_init(compound.init),
[
([['ID', 'a']], [['Constant', 'int', '1'], ['Constant', 'int', '2']]),
([['ID', 'b'], ['Constant', 'int', '0']], ['ID', 't'])])
def test_enums(self):
e1 = "enum mycolor op;"
e1_type = self.parse(e1).ext[0].type.type
self.assertIsInstance(e1_type, Enum)
self.assertEqual(e1_type.name, 'mycolor')
self.assertEqual(e1_type.values, None)
e2 = "enum mysize {large=20, small, medium} shoes;"
e2_type = self.parse(e2).ext[0].type.type
self.assertIsInstance(e2_type, Enum)
self.assertEqual(e2_type.name, 'mysize')
e2_elist = e2_type.values
self.assertIsInstance(e2_elist, EnumeratorList)
for e2_eval in e2_elist.enumerators:
self.assertIsInstance(e2_eval, Enumerator)
self.assertEqual(e2_elist.enumerators[0].name, 'large')
self.assertEqual(e2_elist.enumerators[0].value.value, '20')
self.assertEqual(e2_elist.enumerators[2].name, 'medium')
self.assertEqual(e2_elist.enumerators[2].value, None)
# enum with trailing comma (C99 feature)
e3 = """
enum
{
red,
blue,
green,
} color;
"""
e3_type = self.parse(e3).ext[0].type.type
self.assertIsInstance(e3_type, Enum)
e3_elist = e3_type.values
self.assertIsInstance(e3_elist, EnumeratorList)
for e3_eval in e3_elist.enumerators:
self.assertIsInstance(e3_eval, Enumerator)
self.assertEqual(e3_elist.enumerators[0].name, 'red')
self.assertEqual(e3_elist.enumerators[0].value, None)
self.assertEqual(e3_elist.enumerators[1].name, 'blue')
self.assertEqual(e3_elist.enumerators[2].name, 'green')
def test_typedef(self):
# without typedef, error
s1 = """
node k;
"""
self.assertRaises(ParseError, self.parse, s1)
# now with typedef, works
s2 = """
typedef void* node;
node k;
"""
ps2 = self.parse(s2)
self.assertEqual(expand_decl(ps2.ext[0]),
['Typedef', 'node',
['PtrDecl',
['TypeDecl', ['IdentifierType', ['void']]]]])
self.assertEqual(expand_decl(ps2.ext[1]),
['Decl', 'k',
['TypeDecl', ['IdentifierType', ['node']]]])
s3 = """
typedef int T;
typedef T *pT;
pT aa, bb;
"""
ps3 = self.parse(s3)
self.assertEqual(expand_decl(ps3.ext[3]),
['Decl', 'bb',
['TypeDecl', ['IdentifierType', ['pT']]]])
s4 = '''
typedef char* __builtin_va_list;
typedef __builtin_va_list __gnuc_va_list;
'''
ps4 = self.parse(s4)
self.assertEqual(expand_decl(ps4.ext[1]),
['Typedef', '__gnuc_va_list',
['TypeDecl',
['IdentifierType', ['__builtin_va_list']]]])
s5 = '''typedef struct tagHash Hash;'''
ps5 = self.parse(s5)
self.assertEqual(expand_decl(ps5.ext[0]),
['Typedef', 'Hash', ['TypeDecl', ['Struct', 'tagHash', []]]])
def test_struct_union(self):
s1 = """
struct {
int id;
char* name;
} joe;
"""
self.assertEqual(expand_decl(self.parse(s1).ext[0]),
['Decl', 'joe',
['TypeDecl', ['Struct', None,
[ ['Decl', 'id',
['TypeDecl',
['IdentifierType', ['int']]]],
['Decl', 'name',
['PtrDecl',
['TypeDecl',
['IdentifierType', ['char']]]]]]]]])
s2 = """
struct node p;
"""
self.assertEqual(expand_decl(self.parse(s2).ext[0]),
['Decl', 'p',
['TypeDecl', ['Struct', 'node', []]]])
s21 = """
union pri ra;
"""
self.assertEqual(expand_decl(self.parse(s21).ext[0]),
['Decl', 'ra',
['TypeDecl', ['Union', 'pri', []]]])
s3 = """
struct node* p;
"""
self.assertEqual(expand_decl(self.parse(s3).ext[0]),
['Decl', 'p',
['PtrDecl',
['TypeDecl', ['Struct', 'node', []]]]])
s4 = """
struct node;
"""
self.assertEqual(expand_decl(self.parse(s4).ext[0]),
['Decl', None,
['Struct', 'node', []]])
s5 = """
union
{
struct
{
int type;
} n;
struct
{
int type;
int intnode;
} ni;
} u;
"""
self.assertEqual(expand_decl(self.parse(s5).ext[0]),
['Decl', 'u',
['TypeDecl',
['Union', None,
[['Decl', 'n',
['TypeDecl',
['Struct', None,
[['Decl', 'type',
['TypeDecl', ['IdentifierType', ['int']]]]]]]],
['Decl', 'ni',
['TypeDecl',
['Struct', None,
[['Decl', 'type',
['TypeDecl', ['IdentifierType', ['int']]]],
['Decl', 'intnode',
['TypeDecl', ['IdentifierType', ['int']]]]]]]]]]]])
s6 = """
typedef struct foo_tag
{
void* data;
} foo, *pfoo;
"""
s6_ast = self.parse(s6)
self.assertEqual(expand_decl(s6_ast.ext[0]),
['Typedef', 'foo',
['TypeDecl',
['Struct', 'foo_tag',
[['Decl', 'data',
['PtrDecl', ['TypeDecl', ['IdentifierType', ['void']]]]]]]]])
self.assertEqual(expand_decl(s6_ast.ext[1]),
['Typedef', 'pfoo',
['PtrDecl',
['TypeDecl',
['Struct', 'foo_tag',
[['Decl', 'data',
['PtrDecl', ['TypeDecl', ['IdentifierType', ['void']]]]]]]]]])
s7 = r"""
struct _on_exit_args {
void * _fnargs[32];
void * _dso_handle[32];
long _fntypes;
#line 77 "D:\eli\cpp_stuff\libc_include/sys/reent.h"
long _is_cxa;
};
"""
s7_ast = self.parse(s7, filename='test.c')
self.assert_coord(s7_ast.ext[0].type.decls[2], 6, 22, 'test.c')
self.assert_coord(s7_ast.ext[0].type.decls[3], 78, 22,
r'D:\eli\cpp_stuff\libc_include/sys/reent.h')
s8 = """
typedef enum tagReturnCode {SUCCESS, FAIL} ReturnCode;
typedef struct tagEntry
{
char* key;
char* value;
} Entry;
typedef struct tagNode
{
Entry* entry;
struct tagNode* next;
} Node;
typedef struct tagHash
{
unsigned int table_size;
Node** heads;
} Hash;
"""
s8_ast = self.parse(s8)
self.assertEqual(expand_decl(s8_ast.ext[3]),
['Typedef', 'Hash',
['TypeDecl', ['Struct', 'tagHash',
[['Decl', 'table_size',
['TypeDecl', ['IdentifierType', ['unsigned', 'int']]]],
['Decl', 'heads',
['PtrDecl', ['PtrDecl', ['TypeDecl', ['IdentifierType', ['Node']]]]]]]]]])
def test_struct_enum(self):
s1 = """
struct Foo {
enum Bar { A = 1 };
};
"""
self.assertEqual(expand_decl(self.parse(s1).ext[0]),
['Decl', None,
['Struct', 'Foo',
[['Decl', None,
['Enum', 'Bar', ['A']]]]]])
s2 = """
struct Foo {
enum Bar { A = 1, B, C } bar;
enum Baz { D = A } baz;
} foo;
"""
self.assertEqual(expand_decl(self.parse(s2).ext[0]),
['Decl', 'foo',
['TypeDecl', ['Struct', 'Foo',
[['Decl', 'bar',
['TypeDecl', ['Enum', 'Bar', ['A', 'B', 'C']]]],
['Decl', 'baz',
['TypeDecl', ['Enum', 'Baz', ['D']]]]]]]])
def test_struct_with_extra_semis_inside(self):
s1 = """
struct {
int a;;
} foo;
"""
s1_ast = self.parse(s1)
self.assertEqual(expand_decl(s1_ast.ext[0]),
['Decl', 'foo',
['TypeDecl', ['Struct', None,
[['Decl', 'a',
['TypeDecl', ['IdentifierType', ['int']]]]]]]])
s2 = """
struct {
int a;;;;
float b, c;
;;
char d;
} foo;
"""
s2_ast = self.parse(s2)
self.assertEqual(expand_decl(s2_ast.ext[0]),
['Decl', 'foo',
['TypeDecl', ['Struct', None,
[['Decl', 'a', ['TypeDecl', ['IdentifierType', ['int']]]],
['Decl', 'b', ['TypeDecl', ['IdentifierType', ['float']]]],
['Decl', 'c', ['TypeDecl', ['IdentifierType', ['float']]]],
['Decl', 'd',
['TypeDecl', ['IdentifierType', ['char']]]]]]]])
def test_struct_with_initial_semi(self):
s1 = """
struct {
;int a;
} foo;
"""
s1_ast = self.parse(s1)
self.assertEqual(expand_decl(s1_ast.ext[0]),
['Decl', 'foo',
['TypeDecl', ['Struct', None,
[['Decl', 'a',
['TypeDecl', ['IdentifierType', ['int']]]]]]]])
def test_anonymous_struct_union(self):
s1 = """
union
{
union
{
int i;
long l;
};
struct
{
int type;
int intnode;
};
} u;
"""
self.assertEqual(expand_decl(self.parse(s1).ext[0]),
['Decl', 'u',
['TypeDecl',
['Union', None,
[['Decl', None,
['Union', None,
[['Decl', 'i',
['TypeDecl',
['IdentifierType', ['int']]]],
['Decl', 'l',
['TypeDecl',
['IdentifierType', ['long']]]]]]],
['Decl', None,
['Struct', None,
[['Decl', 'type',
['TypeDecl',
['IdentifierType', ['int']]]],
['Decl', 'intnode',
['TypeDecl',
['IdentifierType', ['int']]]]]]]]]]])
s2 = """
struct
{
int i;
union
{
int id;
char* name;
};
float f;
} joe;
"""
self.assertEqual(expand_decl(self.parse(s2).ext[0]),
['Decl', 'joe',
['TypeDecl',
['Struct', None,
[['Decl', 'i',
['TypeDecl',
['IdentifierType', ['int']]]],
['Decl', None,
['Union', None,
[['Decl', 'id',
['TypeDecl',
['IdentifierType', ['int']]]],
['Decl', 'name',
['PtrDecl',
['TypeDecl',