tank_core/expression/
operand.rs

1use crate::{
2    Expression, OpPrecedence, Value,
3    writer::{Context, SqlWriter},
4};
5
6#[derive(Debug)]
7pub enum Operand<'a> {
8    LitBool(bool),
9    LitFloat(f64),
10    LitIdent(&'a str),
11    LitField(&'a [&'a str]),
12    LitInt(i128),
13    LitStr(&'a str),
14    LitArray(&'a [Operand<'a>]),
15    Null,
16    Type(Value),
17    Variable(Value),
18    Call(&'static str, &'a [&'a dyn Expression]),
19    Asterisk,
20    QuestionMark,
21}
22
23impl OpPrecedence for Operand<'_> {
24    fn precedence(&self, _writer: &dyn SqlWriter) -> i32 {
25        1_000_000
26    }
27}
28
29impl Expression for Operand<'_> {
30    fn write_query(&self, writer: &dyn SqlWriter, context: &mut Context, buff: &mut String) {
31        writer.write_expression_operand(context, buff, self)
32    }
33}
34
35impl PartialEq for Operand<'_> {
36    fn eq(&self, other: &Self) -> bool {
37        match (self, other) {
38            (Self::LitBool(l), Self::LitBool(r)) => l == r,
39            (Self::LitFloat(l), Self::LitFloat(r)) => l == r,
40            (Self::LitIdent(l), Self::LitIdent(r)) => l == r,
41            (Self::LitInt(l), Self::LitInt(r)) => l == r,
42            (Self::LitStr(l), Self::LitStr(r)) => l == r,
43            (Self::LitArray(l), Self::LitArray(r)) => l == r,
44            (Self::Type(l), Self::Type(r)) => l.same_type(r),
45            _ => false,
46        }
47    }
48}
tank_core/expression/operand.rs

tank_core/expression/
operand.rs
