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
|
#pragma once
#include "eval.hh"
#define LocalNoInline(f) static f __attribute__((noinline)); f
#define LocalNoInlineNoReturn(f) static f __attribute__((noinline, noreturn)); f
namespace nix {
LocalNoInlineNoReturn(void throwEvalError(const char * s, const Pos & pos))
{
throw EvalError(format(s) % pos);
}
LocalNoInlineNoReturn(void throwTypeError(const char * s, const Value & v))
{
throw TypeError(format(s) % showType(v));
}
LocalNoInlineNoReturn(void throwTypeError(const char * s, const Value & v, const Pos & pos))
{
throw TypeError(format(s) % showType(v) % pos);
}
void EvalState::forceValue(Value & v, const Pos & pos)
{
if (v.type == tThunk) {
Env * env = v.thunk.env;
Expr * expr = v.thunk.expr;
try {
v.type = tBlackhole;
//checkInterrupt();
expr->eval(*this, *env, v);
} catch (Error & e) {
v.type = tThunk;
v.thunk.env = env;
v.thunk.expr = expr;
throw;
}
}
else if (v.type == tApp)
callFunction(*v.app.left, *v.app.right, v, noPos);
else if (v.type == tBlackhole)
throwEvalError("infinite recursion encountered, at %1%", pos);
}
inline void EvalState::forceAttrs(Value & v)
{
forceValue(v);
if (v.type != tAttrs)
throwTypeError("value is %1% while a set was expected", v);
}
inline void EvalState::forceAttrs(Value & v, const Pos & pos)
{
forceValue(v);
if (v.type != tAttrs)
throwTypeError("value is %1% while a set was expected, at %2%", v, pos);
}
inline void EvalState::forceList(Value & v)
{
forceValue(v);
if (!v.isList())
throwTypeError("value is %1% while a list was expected", v);
}
inline void EvalState::forceList(Value & v, const Pos & pos)
{
forceValue(v);
if (!v.isList())
throwTypeError("value is %1% while a list was expected, at %2%", v, pos);
}
}
|
