feat: separate compilation

1 files changed, 3 insertions, 160 deletions

diff --git a/src/preprocess.c b/src/preprocess.c
index 3ed9740..8c4d096 100644
--- a/src/preprocess.c
+++ b/src/preprocess.c
@@ -1,142 +1,6 @@
-enum TokenKind {
-    TokenKind_eof,
-
-    // Only preprocessing phase.
-    TokenKind_hash,
-    TokenKind_hashhash,
-    TokenKind_whitespace,
-    TokenKind_newline,
-    TokenKind_other,
-    TokenKind_character_constant,
-    TokenKind_header_name,
-    TokenKind_pp_directive_define,
-    TokenKind_pp_directive_elif,
-    TokenKind_pp_directive_elifdef,
-    TokenKind_pp_directive_elifndef,
-    TokenKind_pp_directive_else,
-    TokenKind_pp_directive_embed,
-    TokenKind_pp_directive_endif,
-    TokenKind_pp_directive_error,
-    TokenKind_pp_directive_if,
-    TokenKind_pp_directive_ifdef,
-    TokenKind_pp_directive_ifndef,
-    TokenKind_pp_directive_include,
-    TokenKind_pp_directive_line,
-    TokenKind_pp_directive_pragma,
-    TokenKind_pp_directive_undef,
-    TokenKind_pp_directive_warning,
-    TokenKind_pp_operator_defined,
-    TokenKind_pp_operator___has_c_attribute,
-    TokenKind_pp_operator___has_embed,
-    TokenKind_pp_operator___has_include,
-
-    // C23: 6.4.1
-    TokenKind_keyword_alignas,
-    TokenKind_keyword_alignof,
-    TokenKind_keyword_auto,
-    TokenKind_keyword_bool,
-    TokenKind_keyword_break,
-    TokenKind_keyword_case,
-    TokenKind_keyword_char,
-    TokenKind_keyword_const,
-    TokenKind_keyword_constexpr,
-    TokenKind_keyword_continue,
-    TokenKind_keyword_default,
-    TokenKind_keyword_do,
-    TokenKind_keyword_double,
-    TokenKind_keyword_else,
-    TokenKind_keyword_enum,
-    TokenKind_keyword_extern,
-    TokenKind_keyword_false,
-    TokenKind_keyword_float,
-    TokenKind_keyword_for,
-    TokenKind_keyword_goto,
-    TokenKind_keyword_if,
-    TokenKind_keyword_inline,
-    TokenKind_keyword_int,
-    TokenKind_keyword_long,
-    TokenKind_keyword_nullptr,
-    TokenKind_keyword_register,
-    TokenKind_keyword_restrict,
-    TokenKind_keyword_return,
-    TokenKind_keyword_short,
-    TokenKind_keyword_signed,
-    TokenKind_keyword_sizeof,
-    TokenKind_keyword_static,
-    TokenKind_keyword_static_assert,
-    TokenKind_keyword_struct,
-    TokenKind_keyword_switch,
-    TokenKind_keyword_thread_local,
-    TokenKind_keyword_true,
-    TokenKind_keyword_typedef,
-    TokenKind_keyword_typeof,
-    TokenKind_keyword_typeof_unqual,
-    TokenKind_keyword_union,
-    TokenKind_keyword_unsigned,
-    TokenKind_keyword_void,
-    TokenKind_keyword_volatile,
-    TokenKind_keyword_while,
-    TokenKind_keyword__Atomic,
-    TokenKind_keyword__BitInt,
-    TokenKind_keyword__Complex,
-    TokenKind_keyword__Decimal128,
-    TokenKind_keyword__Decimal32,
-    TokenKind_keyword__Decimal64,
-    TokenKind_keyword__Generic,
-    TokenKind_keyword__Imaginary,
-    TokenKind_keyword__Noreturn,
-
-    TokenKind_and,
-    TokenKind_andand,
-    TokenKind_arrow,
-    TokenKind_assign,
-    TokenKind_assign_add,
-    TokenKind_assign_and,
-    TokenKind_assign_div,
-    TokenKind_assign_lshift,
-    TokenKind_assign_mod,
-    TokenKind_assign_mul,
-    TokenKind_assign_or,
-    TokenKind_assign_rshift,
-    TokenKind_assign_sub,
-    TokenKind_assign_xor,
-    TokenKind_brace_l,
-    TokenKind_brace_r,
-    TokenKind_bracket_l,
-    TokenKind_bracket_r,
-    TokenKind_colon,
-    TokenKind_comma,
-    TokenKind_dot,
-    TokenKind_ellipsis,
-    TokenKind_eq,
-    TokenKind_ge,
-    TokenKind_gt,
-    TokenKind_ident,
-    TokenKind_le,
-    TokenKind_literal_int,
-    TokenKind_literal_str,
-    TokenKind_lshift,
-    TokenKind_lt,
-    TokenKind_minus,
-    TokenKind_minusminus,
-    TokenKind_ne,
-    TokenKind_not,
-    TokenKind_or,
-    TokenKind_oror,
-    TokenKind_paren_l,
-    TokenKind_paren_r,
-    TokenKind_percent,
-    TokenKind_plus,
-    TokenKind_plusplus,
-    TokenKind_question,
-    TokenKind_rshift,
-    TokenKind_semicolon,
-    TokenKind_slash,
-    TokenKind_star,
-    TokenKind_tilde,
-    TokenKind_xor,
-};
-typedef enum TokenKind TokenKind;
+#include "preprocess.h"
+#include "common.h"
+#include "sys.h"
 
 const char* token_kind_stringify(TokenKind k) {
     if (k == TokenKind_eof)
@@ -405,20 +269,6 @@ const char* token_kind_stringify(TokenKind k) {
         unreachable();
 }
 
-// TokenValue is externally tagged by Token's kind.
-union TokenValue {
-    const char* string;
-    int integer;
-};
-typedef union TokenValue TokenValue;
-
-struct Token {
-    TokenKind kind;
-    TokenValue value;
-    SourceLocation loc;
-};
-typedef struct Token Token;
-
 const char* token_stringify(Token* t) {
     TokenKind k = t->kind;
     if (k == TokenKind_literal_int) {
@@ -437,13 +287,6 @@ const char* token_stringify(Token* t) {
     }
 }
 
-struct TokenArray {
-    size_t len;
-    size_t capacity;
-    Token* data;
-};
-typedef struct TokenArray TokenArray;
-
 void tokens_init(TokenArray* tokens, size_t capacity) {
     tokens->len = 0;
     tokens->capacity = capacity;