Adds associated functions for handling of indentation

sway-fmt-v2/src/constants.rs

@@ -49,7 +49,17 @@ pub const DEFAULT_ENUM_VARIANT_ALIGN_THRESHOLD: usize = 0;
 pub const DEFAULT_MAX_COMMENT_WIDTH: usize = 80;
 
 /////NEWLINE_STYLE/////
-pub const LINE_FEED: char = '\n';
-pub const CARRIAGE_RETURN: char = '\r';
-pub const WINDOWS_NEWLINE: &str = "\r\n";
-pub const UNIX_NEWLINE: &str = "\n";
+
+pub(crate) const LINE_FEED: char = '\n';
+pub(crate) const CARRIAGE_RETURN: char = '\r';
+pub(crate) const WINDOWS_NEWLINE: &str = "\r\n";
+pub(crate) const UNIX_NEWLINE: &str = "\n";
+
+/////INDENT_STYLE/////
+
+// INDENT_BUFFER.len() = 81
+pub(crate) const INDENT_BUFFER_LEN: usize = 80;
+pub(crate) const INDENT_BUFFER: &str =
+    "\n                                                                                ";
+// 8096 is close enough to infinite according to `rustfmt`.
+pub(crate) const INFINITE_SHAPE_WIDTH: usize = 8096;

sway-fmt-v2/src/fmt.rs

@@ -7,7 +7,7 @@ pub use crate::{
     error::{ConfigError, FormatterError},
 };
 
-#[derive(Debug)]
+#[derive(Debug, Default)]
 pub struct Formatter {
     pub config: Config,
 }

sway-fmt-v2/src/lib.rs

@@ -9,7 +9,7 @@ mod constants;
 mod error;
 mod fmt;
 mod items;
-mod newline_style;
+mod utils;
 
 pub use crate::fmt::Formatter;
 pub use error::FormatterError;

sway-fmt-v2/src/utils.rs

@@ -0,0 +1,2 @@
+pub mod indent_style;
+pub mod newline_style;