Class in macro compiler

`Expr`

class Expr

Import

use macro::{Expr};

A function-style macro argument as written: f(1), a + b, "text".

Fields#

Field	Type	Description
`text`	`string`
`kind_name`	`string`	`literal`, `ident`, `path`, `call` or `other`.
`value_kind`	`string`	For a constant argument (`3`, `-2.5`, `"a\n"`, `1 + 2`): `int`, `float`, `bool` or `string`, else `""`.
`value_text`	`string`	The value: decimal digits for an `int`, the text for a `string`, `1` / `0` for a `bool`; for a `float`, the digits of `d` in `d * 10^value_exp`.
`value_exp`	`int`

Name	Description
`str`	The source text as written.
`src`	The source to splice: parenthesized unless it is a single term, so `${a} * 2` keeps `a` whole.
`kind`
`is_literal`
`is_ident`
`int`	The argument’s value when it is an integer constant: `3`, `-2`, `2 * 21`.
`float`	The value of a float constant (`2.5`, `-1.0e3`), or of an integer one.
`bool`	The value of a `true` / `false` constant.
`string`	The value of a string constant, escapes decoded: for `"a\"b"`, `a"b`.