1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
|
import "libc.hff";
import "mem.hff";
import "option.hff";
/// Types
struct Type;
struct Decl;
struct Expr;
struct Env;
struct Loc {
fileid i16,
col i16,
line int,
idx isize,
}
#[lax]
enum TokT : i32 {
// !sorted
kw_and, kw_as, kw_break, kw_case, kw_const,
kw_continue, kw_def, kw_defmacro, kw_do,
kw_else, kw_enum, kw_extern, kw_fn,
kw_for, kw_if, kw_import, kw_let,
kw_or, kw_return, kw_sizeof, kw_static,
kw_struct, kw_switch, kw_typedef, kw_typeof,
kw_union, kw_while,
NUM_KEYWORDS,
int = -100,
flo,
bool,
str,
chr,
null,
ident,
macident,
gensym,
type,
label,
strify,
eof,
}
def NUM_KEYWORDS int = TokT:NUM_KEYWORDS;
struct Tok {
t TokT,
loc Loc,
ty *const Type,
u union {
int i64,
uint u64,
flo f64,
bool bool,
str [#]const u8,
ident *const u8,
},
}
struct Type {
size usize,
align usize,
konst bool,
id uint,
u enum union {
Void,
Bool,
Int struct { sgn bool },
Flo,
Ptr *Type,
Arr struct { child *const Type, length i64 },
Slice *Type,
Fn struct {
params [#]*const Type,
variadic bool,
ret *const Type,
},
},
fn is(ty *const Type, tag typeof((Type{}).u.#tag)) bool {
return ty.u.#tag == tag;
}
}
struct Parser {
fp *FILE,
alloc *Allocator,
curfile *const u8,
curenv *Env,
tokloc Loc,
curloc Loc,
eof bool,
is_header bool,
peekchr Option<int>,
peektok Option<Tok>,
}
enum UnOp {
neg,
not,
compl,
deref,
addrof,
postinc,
preinc,
postdec,
predec,
}
struct Expr {
loc Loc,
ty *const Type,
u enum union {
IntLit union { i i64, u u64 },
FloLit f64,
StrLit [#]const u8,
BoolLit bool,
NullLit,
Symbol *Decl,
BinOp struct { op TokT, lhs *Expr, rhs *Expr },
UnOp struct { op UnOp, ex *Expr },
Cond struct { test *Expr, t *Expr, f *Expr },
Call struct { lhs *Expr, args [#]Expr }
}
}
struct Stmt {
loc Loc,
u enum union {
Block [#]Stmt,
Expr Expr,
}
}
struct Fn {
ty *const Type,
paramnames [#]*const u8,
variadic bool,
id int,
body Option<[#]Stmt>
}
struct Var {
ty *const Type,
ini Option<Expr>,
fnid int,
}
struct Decl {
name *const u8,
loc Loc,
externp bool,
u enum union {
Let Var,
Static Var,
Fn Fn,
Ty *const Type,
},
}
struct DeclList {
link *DeclList,
decl Decl,
}
struct Targ {
name *const u8,
ptrsize u8,
intsize u8,
i64align u8,
longsize u8, longalign u8,
llongsize u8, llongalign u8,
sizesize u8,
f64align u8,
valistsize u8, valistalign u8,
charsigned bool,
shortenum bool,
}
// parse.cff
extern static keyword2str [NUM_KEYWORDS]*const u8;
extern fn parser_init(*Parser, path *const u8) void;
extern fn parse(*Parser) [#]Decl;
// fmt.cff
extern fn vpfmt(proc *fn(u8, *void) void, parg *void, fmt *const u8, va_list) void;
extern fn pfmt(proc *fn(u8, *void) void, parg *void, fmt *const u8, ...) void;
extern fn vefmt(fmt *const u8, ap va_list) void;
extern fn efmt(fmt *const u8, ...) void;
extern fn ssfmt(fmt *const u8, ...) *const u8;
extern fn err(P *Parser, Loc, fmt *const u8, ...) void;
extern fn fatal(*Parser, Loc, fmt *const u8, ...) void;
// targ.cff
extern static g_targ *const Targ;
extern fn targ_ini(name *const u8) bool;
// type.cff
extern static ty_void *const Type,
ty_bool *const Type,
ty_i8 *const Type,
ty_u8 *const Type,
ty_i16 *const Type,
ty_u16 *const Type,
ty_i32 *const Type,
ty_u32 *const Type,
ty_int *const Type,
ty_uint *const Type,
ty_i64 *const Type,
ty_u64 *const Type,
ty_isize *const Type,
ty_usize *const Type,
ty_iptrint *const Type,
ty_uptrint *const Type,
ty_f32 *const Type,
ty_f64 *const Type,
ty_voidptr *const Type;
extern fn interntype(Type) *const Type;
extern fn putprimtypes(env *Env) void;
fn constify(ty *const Type) *const Type {
if ty.konst or ty.u.#tag == :Fn {
return ty;
}
let ty2 = *ty;
ty2.konst = #t;
return interntype(ty2);
}
fn unconstify(ty *const Type) *const Type {
if !ty.konst {
return ty;
}
let ty2 = *ty;
ty2.konst = #f;
return interntype(ty2);
}
fn mkarrtype(len i64, konst bool, child *const Type) *const Type {
return interntype({
len * child.size,
child.align,
.u: :Arr { konst ? constify(child) : child, len }
});
}
fn mkptrtype(child *const Type) *const Type {
return interntype({
g_targ.ptrsize,
.u: :Ptr(child)
});
}
extern fn isnumtype(ty *const Type) bool;
extern fn typeof2(a *const Type, b *const Type) *const Type;
// env.cff
extern fn mkenv(parent *Env, alloc *Allocator) *Env;
extern fn envparent(*Env) *Env;
extern fn envput(*Env, Decl, **const Decl) *Decl;
extern fn envfind(*Env, *const u8) *Decl;
extern fn envfree(*Env) void;
|
