assembly_fdb_core/value/
file.rs

1//! # Values as serialized to a file
2
3use crate::file::FDBFieldData;
4
5use super::{Context, UnknownValueType, Value, ValueType};
6
7#[derive(Debug, Copy, Clone, PartialEq, Eq)]
8/// The `common::Context` for used to make `file::FDBFieldValue`
9pub struct FileContext;
10
11impl Context for FileContext {
12    type String = IndirectValue;
13    type I64 = IndirectValue;
14    type XML = IndirectValue;
15}
16
17/// An indirect value in the file
18#[derive(Debug, Copy, Clone, PartialEq, Eq)]
19pub struct IndirectValue {
20    /// The base of the value
21    pub addr: u32,
22}
23
24/// A database field value repr
25pub type FDBFieldValue = Value<FileContext>;
26
27impl TryFrom<FDBFieldData> for FDBFieldValue {
28    type Error = UnknownValueType;
29
30    fn try_from(value: FDBFieldData) -> Result<Self, Self::Error> {
31        let value_type: ValueType = value.data_type.try_into()?;
32        Ok(match value_type {
33            ValueType::Nothing => FDBFieldValue::Nothing,
34            ValueType::Integer => FDBFieldValue::Integer(i32::from_le_bytes(value.value)),
35            ValueType::Float => FDBFieldValue::Float(f32::from_le_bytes(value.value)),
36            ValueType::Text => FDBFieldValue::Text(IndirectValue {
37                addr: u32::from_le_bytes(value.value),
38            }),
39            ValueType::Boolean => FDBFieldValue::Boolean(value.value != [0; 4]),
40            ValueType::BigInt => FDBFieldValue::BigInt(IndirectValue {
41                addr: u32::from_le_bytes(value.value),
42            }),
43            ValueType::VarChar => FDBFieldValue::VarChar(IndirectValue {
44                addr: u32::from_le_bytes(value.value),
45            }),
46        })
47    }
48}
assembly_fdb_core/value/file.rs

assembly_fdb_core/value/
file.rs
