C Preprocessor and Parser
$ cat source.cint main( int argc, char * argv[] )
{
int y;
y = factorial(6);
printf("6! = %d\n", y);
}
int factorial(int x)
{
if ( x == 1 )
return 1;
return x * factorial(x-1);
}$ cast ast source.c(TranslationUnit:
external_declarations=[
(ExternalDeclaration:
declarations=(FunctionDefinition:
body=[
(Declaration:
init_declarators=[
(InitDeclarator:
initializer=None,
declarator=(Declarator:
direct_declarator=[c:115] identifier (y) [source.c line 3, col 7],
pointer=None
)
)
],
declaration_specifiers=[
[c:13] int (int) [source.c line 3, col 3]
]
),
(Assign:
var=[c:115] identifier (y) [source.c line 4, col 3],
value=(FuncCall:
params=[
[c:49] integer_constant (6) [source.c line 4, col 17]
],
name=[c:115] identifier (factorial) [source.c line 4, col 7]
)
),
(FuncCall:
params=[
[c:82] string_literal ("6! = %d\n") [source.c line 5, col 10],
[c:115] identifier (y) [source.c line 5, col 23]
],
name=[c:115] identifier (printf) [source.c line 5, col 3]
)
],
declaration_list=None,
signature=(Declarator:
direct_declarator=(FunctionSignature:
params=(ParameterTypeList:
parameter_declarations=[
(NamedParameter:
declaration_specifiers=[
[c:13] int (int) [source.c line 1, col 11]
],
declarator=(Declarator:
direct_declarator=[c:115] identifier (argc) [source.c line 1, col 15],
pointer=None
)
),
(NamedParameter:
declaration_specifiers=[
[c:43] char (char) [source.c line 1, col 21]
],
declarator=(Declarator:
direct_declarator=(Array:
name=[c:115] identifier (argv) [source.c line 1, col 28],
size=None
),
pointer=[
[c:92] asterisk (*) [source.c line 1, col 26]
]
)
)
],
va_args=None
),
declarator=[c:115] identifier (main) [source.c line 1, col 5]
),
pointer=None
)
),
declaration_specifiers=[
[c:13] int (int) [source.c line 1, col 1]
]
),
(ExternalDeclaration:
declarations=(FunctionDefinition:
body=[
(If:
elseif=None,
statement=(Return:
expr=[c:49] integer_constant (1) [source.c line 11, col 12]
),
condition=(Equals:
right=[c:49] integer_constant (1) [source.c line 10, col 13],
left=[c:115] identifier (x) [source.c line 10, col 8]
),
else=None
),
(Return:
expr=(Mul:
right=(FuncCall:
params=[
(Sub:
right=[c:49] integer_constant (1) [source.c line 12, col 26],
left=[c:115] identifier (x) [source.c line 12, col 24]
)
],
name=[c:115] identifier (factorial) [source.c line 12, col 14]
),
left=[c:115] identifier (x) [source.c line 12, col 10]
)
)
],
declaration_list=None,
signature=(Declarator:
direct_declarator=(FunctionSignature:
params=(ParameterTypeList:
parameter_declarations=[
(NamedParameter:
declaration_specifiers=[
[c:13] int (int) [source.c line 8, col 15]
],
declarator=(Declarator:
direct_declarator=[c:115] identifier (x) [source.c line 8, col 19],
pointer=None
)
)
],
va_args=None
),
declarator=[c:115] identifier (factorial) [source.c line 8, col 5]
),
pointer=None
)
),
declaration_specifiers=[
[c:13] int (int) [source.c line 8, col 1]
]
)
]
)