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42 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 736232f3d6 Support file-scope functions 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 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 cb81a379d9 Use 32 bit registers for char, short and int 2020-12-07 12:00:05 +09:00
Rui Ueyama 74e3acc296 Add function declaration 2020-12-07 11:51:20 +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 5831edaab3 Change size of int from 8 to 4 2020-10-15 14:22:16 +09:00
Rui Ueyama bef05432c9 Add struct assignment 2020-10-15 14:22:16 +09:00
Rui Ueyama dfec1157b4 Align local variables 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 1c91d1943a Emit .file and .loc assembler directives 
With these directives, gdb can print out an error location when
a compiled program crashes.
 2020-10-15 14:22:16 +09:00
Rui Ueyama a0388bada4 Add -o and --help options 2020-10-08 16:23:53 +09:00
Rui Ueyama 7b8528f71c Refactor -- no functionality change 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 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 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 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
Rui Ueyama 1f3eb34f63 Add "while" statement 2020-10-07 20:13:25 +09:00
Rui Ueyama f5d480f139 Add "for" statement 2020-10-07 20:13:25 +09:00
Rui Ueyama 72b841508f Add "if" statement 2020-10-07 20:13:19 +09:00
Rui Ueyama 18ac283a5d Add { ... } 2020-10-07 20:13:00 +09:00
Rui Ueyama 6cc1c1f064 Add "return" statement 2020-10-07 20:12:57 +09:00
Rui Ueyama 482c26b536 Support multi-letter local variables 2020-10-07 20:12:19 +09:00
Rui Ueyama 1f9f3adf32 Support single-letter local variables 2020-10-07 20:11:48 +09:00
Rui Ueyama 76cae0ad05 Accept multiple statements separated by semicolons 2020-10-07 20:11:22 +09:00
Rui Ueyama 725badfb49 Split main.c into multiple small files 2020-10-07 20:11:16 +09:00