blob: d8d3ac3a9bb0f4ae50c196fcb60084b6043a1f8c (
plain)
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
|
package main
// Size corresponds to an expression that represents the number of bytes
// in some *thing*. Generally, sizes are used to allocate buffers and to
// inform X how big requests are.
// Size is basically a thin layer over an Expression that yields easy methods
// for adding and multiplying sizes.
type Size struct {
Expression
}
// newFixedSize creates a new Size with some fixed and known value.
func newFixedSize(fixed uint) Size {
return Size{&Value{v: fixed}}
}
// newExpressionSize creates a new Size with some expression.
func newExpressionSize(variable Expression) Size {
return Size{variable}
}
// Add adds s1 and s2 and returns a new Size.
func (s1 Size) Add(s2 Size) Size {
return Size{newBinaryOp("+", s1, s2)}
}
// Multiply mupltiplies s1 and s2 and returns a new Size.
func (s1 Size) Multiply(s2 Size) Size {
return Size{newBinaryOp("*", s1, s2)}
}
|
