rototo 0.1.0-alpha.4

Control plane for runtime configuration of your application.
Documentation 
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

use serde_json::Value as JsonValue;
use toml_span::Value as TomlValue;
use toml_span::value::Table;

use crate::diagnostics::DiagnosticLocation;

use super::super::index::*;
use super::super::source::SourceDocument;
use super::super::syntax::{item_location, plain_toml_from_span_value};

pub(super) fn integer_field(
    document: &SourceDocument,
    table: &Table<'_>,
    key: &str,
    missing_location: DiagnosticLocation,
) -> ProjectField<i64> {
    match table.get(key) {
        Some(item) => match item.as_integer() {
            Some(value) => ProjectField::Present(Spanned {
                value,
                location: item_location(document, item),
            }),
            None => ProjectField::Invalid {
                location: item_location(document, item),
            },
        },
        None => ProjectField::Missing {
            location: missing_location,
        },
    }
}

pub(super) fn string_field(
    document: &SourceDocument,
    table: &Table<'_>,
    key: &str,
    missing_location: DiagnosticLocation,
) -> ProjectField<String> {
    match table.get(key) {
        Some(item) => match item.as_str() {
            Some(value) => ProjectField::Present(Spanned {
                value: value.to_owned(),
                location: item_location(document, item),
            }),
            None => ProjectField::Invalid {
                location: item_location(document, item),
            },
        },
        None => ProjectField::Missing {
            location: missing_location,
        },
    }
}

pub(super) fn optional_string_field(
    document: &SourceDocument,
    table: &Table<'_>,
    key: &str,
) -> Option<ProjectField<String>> {
    let item = table.get(key)?;
    Some(match item.as_str() {
        Some(value) => ProjectField::Present(Spanned {
            value: value.to_owned(),
            location: item_location(document, item),
        }),
        None => ProjectField::Invalid {
            location: item_location(document, item),
        },
    })
}

pub(super) fn predicate_op_field(
    document: &SourceDocument,
    table: &Table<'_>,
    missing_location: DiagnosticLocation,
) -> ProjectField<PredicateOp> {
    match string_field(document, table, "op", missing_location) {
        ProjectField::Present(op) => ProjectField::Present(Spanned {
            value: PredicateOp::from_str(&op.value),
            location: op.location,
        }),
        ProjectField::Invalid { location } => ProjectField::Invalid { location },
        ProjectField::Missing { location } => ProjectField::Missing { location },
    }
}

pub(super) fn project_value_shape(
    document: &SourceDocument,
    item: &TomlValue<'_>,
) -> ValueShapeNode {
    ValueShapeNode {
        location: item_location(document, item),
        shape: value_shape(item),
        value: json_from_toml_value(item),
    }
}

pub(super) fn project_bucket_range(
    document: &SourceDocument,
    item: &TomlValue<'_>,
) -> BucketRangeNode {
    let location = item_location(document, item);
    let Some(array) = item.as_array() else {
        return BucketRangeNode {
            location,
            is_array: false,
            len: 0,
            start: None,
            end: None,
        };
    };
    let values: Vec<_> = array.iter().collect();
    BucketRangeNode {
        location,
        is_array: true,
        len: values.len(),
        start: values.first().and_then(|value| value.as_integer()),
        end: values.get(1).and_then(|value| value.as_integer()),
    }
}

fn value_shape(item: &TomlValue<'_>) -> ValueShape {
    if item.as_str().is_some() {
        ValueShape::String
    } else if item.as_integer().is_some() {
        ValueShape::Integer
    } else if item.as_float().is_some() {
        ValueShape::Float
    } else if item.as_bool().is_some() {
        ValueShape::Boolean
    } else if item.as_array().is_some() {
        ValueShape::Array
    } else {
        ValueShape::Table
    }
}

pub(crate) fn json_from_toml_value(value: &TomlValue<'_>) -> JsonValue {
    serde_json::to_value(plain_toml_from_span_value(value)).unwrap_or(JsonValue::Null)
}