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60 Commits

Author SHA1 Message Date
Rui Ueyama 86440068b4 Add &, |, ^, &=, |= and ^= 2020-12-07 12:00:06 +09:00
Rui Ueyama daa739817c Add % and %= 2020-12-07 12:00:06 +09:00
Rui Ueyama 46a96d6862 Add ~ operator 2020-12-07 12:00:06 +09:00
Rui Ueyama 6b88bcb306 Add ! operator 2020-12-07 12:00:06 +09:00
Rui Ueyama e8ca48cf41 Add post ++ and -- 2020-12-07 12:00:06 +09:00
Rui Ueyama 47f19371f7 Add pre ++ and -- 2020-12-07 12:00:06 +09:00
Rui Ueyama 01a94c04aa Add +=, -=, *= and /= 2020-12-07 12:00:06 +09:00
Rui Ueyama a4fea2ba3e Allow for-loops to define local variables 2020-12-07 12:00:06 +09:00
Rui Ueyama 736232f3d6 Support file-scope functions 2020-12-07 12:00:05 +09:00
Rui Ueyama 48ba2656fe Add enum 2020-12-07 12:00:05 +09:00
Rui Ueyama 44bba965cb Add _Bool type 
_Bool isn't just a 1-bit integer because when you convert a value
to bool, the result is 1 if the original value is non-zero. This
is contrary to the other small integral types, e.g. char, as you
can see below:

  char x  = 256; // x is 0
  _Bool y = 256; // y is 1
 2020-12-07 12:00:05 +09:00
Rui Ueyama fdc80bc6b5 Handle function argument type conversion 2020-12-07 12:00:05 +09:00
Rui Ueyama 818352acc0 Handle return type conversion 2020-12-07 12:00:05 +09:00
Rui Ueyama 9e211cbf1d Report an error on undefined/undeclared functions 2020-12-07 12:00:05 +09:00
Rui Ueyama 8b430a6c5f Implement usual arithmetic conversion 2020-12-07 12:00:05 +09:00
Rui Ueyama cfc4fa94c1 Add type cast 2020-12-07 12:00:05 +09:00
Rui Ueyama 67543ea113 Make sizeof to accept not only an expression but also a typename 
Previously, chibicc's sizeof accepted only an expression, so you
couldn't write something like `sizeof(int)`. Now it accepts that.
 2020-12-07 11:59:59 +09:00
Rui Ueyama a6b82da1ae Add typedef 
In the following example, `x` is defined as an alias for `int`.

  typedef x;

Below is valid C code where the second `t` is a local variable
of type int having value 3.

  typedef int t;
  t t = 3;
 2020-12-07 11:51:20 +09:00
Rui Ueyama f46370ef98 Add `long long` as an alias for `long` 2020-12-07 11:51:20 +09:00
Rui Ueyama 287906abb8 Handle complex type declarations correctly 
chibicc can now read complex type declarations such as below.

  long x;
  long int x;
  int long x;
  short x;
  short int x;
  int short x;
  long long x;
  long long int x;
 2020-12-07 11:51:20 +09:00
Rui Ueyama 8c3503bb94 Add void type 2020-12-07 11:51:20 +09:00
Rui Ueyama 74e3acc296 Add function declaration 2020-12-07 11:51:20 +09:00
Rui Ueyama a817b23da3 Add nested type declarators 2020-12-07 11:51:18 +09:00
Rui Ueyama 9d48eef58b Add short type 2020-10-15 14:22:16 +09:00
Rui Ueyama 43c2f0829f Add long type 2020-10-15 14:22:16 +09:00
Rui Ueyama 11e3841832 Add union 2020-10-15 14:22:16 +09:00
Rui Ueyama f0a018a7d6 Add -> operator 2020-10-15 14:22:16 +09:00
Rui Ueyama e1e831ea3e Support struct tags 2020-10-15 14:22:16 +09:00
Rui Ueyama 9443e4b8bc Align struct members 2020-10-15 14:22:16 +09:00
Rui Ueyama f814033d04 Add struct 2020-10-15 14:22:16 +09:00
Rui Ueyama e6307ad374 Add comma operator 
This patch allows writing a comma expression on the left-hand side
of an assignment expression. This is called the "generalized lvalue"
which is a deprecated GCC language extension. I'm implementing it
anyway because it's useful to implement other features.
 2020-10-15 14:22:16 +09:00
Rui Ueyama ca8b2434c9 Handle block scope 2020-10-08 16:23:53 +09:00
Rui Ueyama 9dae23461e [GNU] Add statement expression 
This is a GNU C extension but will be useful for writing tests.
 2020-10-08 15:43:05 +09:00
Rui Ueyama 35a0bcd366 Refactoring: Add a utility function 2020-10-08 14:31:22 +09:00
Rui Ueyama 4cedda2dbe Add string literal 2020-10-07 20:13:26 +09:00
Rui Ueyama be38d63d1b Add char type 2020-10-07 20:13:26 +09:00
Rui Ueyama a4d3223a72 Add global variables 2020-10-07 20:13:26 +09:00
Rui Ueyama 0b7663481d Merge Function with Var 
No functional change
 2020-10-07 20:13:26 +09:00
Rui Ueyama 3e55cafef8 Add sizeof 2020-10-07 20:13:26 +09:00
Rui Ueyama 648646bba7 Add [] operator 2020-10-07 20:13:26 +09:00
Rui Ueyama 3ce1b2d067 Add arrays of arrays 2020-10-07 20:13:26 +09:00
Rui Ueyama 8b6395d0f2 Add one dimensional arrays 2020-10-07 20:13:26 +09:00
Rui Ueyama aacc0cfec2 Support function definition up to 6 parameters 2020-10-07 20:13:26 +09:00
Rui Ueyama 6cb4220f33 Support zero-arity function definition 2020-10-07 20:13:25 +09:00
Rui Ueyama 964b1d2a0e Support function call with up to 6 arguments 2020-10-07 20:13:25 +09:00
Rui Ueyama 30a3992627 Support zero-arity function calls 2020-10-07 20:13:25 +09:00
Rui Ueyama b4e82cf7ce Add keyword "int" and make variable definition mandatory 2020-10-07 20:13:25 +09:00
Rui Ueyama a6bc4ab101 Make pointer arithmetic work 2020-10-07 20:13:25 +09:00
Rui Ueyama 863e2b8de2 Add unary & and * 2020-10-07 20:13:25 +09:00
Rui Ueyama 3d8627719b Add a representative node to each Node to improve error messages 2020-10-07 20:13:25 +09:00