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
use crate::{error::Error::*, evaluate, lazy_val, resolved_lazy_val, throw, Context, Result, Val};
use closure::closure;
use jrsonnet_interner::IStr;
use jrsonnet_parser::{ArgsDesc, ParamsDesc};
use rustc_hash::FxHashMap;
use std::{collections::HashMap, hash::BuildHasherDefault};
const NO_DEFAULT_CONTEXT: &str =
"no default context set for call with defined default parameter value";
pub fn parse_function_call(
ctx: Context,
body_ctx: Option<Context>,
params: &ParamsDesc,
args: &ArgsDesc,
tailstrict: bool,
) -> Result<Context> {
let mut out = HashMap::with_capacity_and_hasher(params.len(), BuildHasherDefault::default());
let mut positioned_args = vec![None; params.0.len()];
for (id, arg) in args.iter().enumerate() {
let idx = if let Some(name) = &arg.0 {
params
.iter()
.position(|p| *p.0 == *name)
.ok_or_else(|| UnknownFunctionParameter(name.clone()))?
} else {
id
};
if idx >= params.len() {
throw!(TooManyArgsFunctionHas(params.len()));
}
if positioned_args[idx].is_some() {
throw!(BindingParameterASecondTime(params[idx].0.clone()));
}
positioned_args[idx] = Some(arg.1.clone());
}
for (id, p) in params.iter().enumerate() {
let (ctx, expr) = if let Some(arg) = &positioned_args[id] {
(ctx.clone(), arg)
} else if let Some(default) = &p.1 {
(body_ctx.clone().expect(NO_DEFAULT_CONTEXT), default)
} else {
throw!(FunctionParameterNotBoundInCall(p.0.clone()));
};
let val = if tailstrict {
resolved_lazy_val!(evaluate(ctx, expr)?)
} else {
lazy_val!(closure!(clone ctx, clone expr, ||evaluate(ctx.clone(), &expr)))
};
out.insert(p.0.clone(), val);
}
Ok(body_ctx.unwrap_or(ctx).extend(out, None, None, None))
}
pub fn parse_function_call_map(
ctx: Context,
body_ctx: Option<Context>,
params: &ParamsDesc,
args: &HashMap<IStr, Val>,
tailstrict: bool,
) -> Result<Context> {
let mut out = FxHashMap::with_capacity_and_hasher(params.len(), BuildHasherDefault::default());
let mut positioned_args = vec![None; params.0.len()];
for (name, val) in args.iter() {
let idx = params
.iter()
.position(|p| *p.0 == **name)
.ok_or_else(|| UnknownFunctionParameter((name as &str).to_owned()))?;
if idx >= params.len() {
throw!(TooManyArgsFunctionHas(params.len()));
}
if positioned_args[idx].is_some() {
throw!(BindingParameterASecondTime(params[idx].0.clone()));
}
positioned_args[idx] = Some(val.clone());
}
for (id, p) in params.iter().enumerate() {
let val = if let Some(arg) = positioned_args[id].take() {
resolved_lazy_val!(arg)
} else if let Some(default) = &p.1 {
if tailstrict {
resolved_lazy_val!(evaluate(
body_ctx.clone().expect(NO_DEFAULT_CONTEXT),
default
)?)
} else {
let body_ctx = body_ctx.clone();
let default = default.clone();
lazy_val!(move || {
evaluate(body_ctx.clone().expect(NO_DEFAULT_CONTEXT), &default)
})
}
} else {
throw!(FunctionParameterNotBoundInCall(p.0.clone()));
};
out.insert(p.0.clone(), val);
}
Ok(body_ctx.unwrap_or(ctx).extend(out, None, None, None))
}
pub fn place_args(
ctx: Context,
body_ctx: Option<Context>,
params: &ParamsDesc,
args: &[Val],
) -> Result<Context> {
let mut out = FxHashMap::with_capacity_and_hasher(params.len(), BuildHasherDefault::default());
let mut positioned_args = vec![None; params.0.len()];
for (id, arg) in args.iter().enumerate() {
if id >= params.len() {
throw!(TooManyArgsFunctionHas(params.len()));
}
positioned_args[id] = Some(arg);
}
for (id, p) in params.iter().enumerate() {
let val = if let Some(arg) = &positioned_args[id] {
(*arg).clone()
} else if let Some(default) = &p.1 {
evaluate(ctx.clone(), default)?
} else {
throw!(FunctionParameterNotBoundInCall(p.0.clone()));
};
out.insert(p.0.clone(), resolved_lazy_val!(val));
}
Ok(body_ctx.unwrap_or(ctx).extend(out, None, None, None))
}
#[macro_export]
macro_rules! parse_args {
($ctx: expr, $fn_name: expr, $args: expr, $total_args: expr, [
$($id: expr, $name: ident: $ty: expr $(=>$match: path)?);+ $(;)?
], $handler:block) => {{
use $crate::{error::Error::*, throw, evaluate, push_stack_frame, typed::CheckType};
let args = $args;
if args.len() > $total_args {
throw!(TooManyArgsFunctionHas($total_args));
}
$(
if args.len() <= $id {
throw!(FunctionParameterNotBoundInCall(stringify!($name).into()));
}
let $name = &args[$id];
if $name.0.is_some() {
if $name.0.as_ref().unwrap() != stringify!($name) {
throw!(IntrinsicArgumentReorderingIsNotSupportedYet);
}
}
let $name = push_stack_frame(None, || format!("evaluating argument"), || {
let value = evaluate($ctx.clone(), &$name.1)?;
$ty.check(&value)?;
Ok(value)
})?;
$(
let $name = if let $match(v) = $name {
v
} else {
unreachable!();
};
)?
)+
($handler as crate::Result<_>)
}};
}