Move pprust code to a 'state' submodule

compiler/rustc_ast_pretty/src/pprust/mod.rs

@@ -0,0 +1,99 @@
+#[cfg(test)]
+mod tests;
+
+pub mod state;
+pub use state::{print_crate, AnnNode, Comments, PpAnn, PrintState, State};
+
+use rustc_ast as ast;
+use rustc_ast::token::{Nonterminal, Token, TokenKind};
+use rustc_ast::tokenstream::{TokenStream, TokenTree};
+
+pub fn nonterminal_to_string(nt: &Nonterminal) -> String {
+    State::new().nonterminal_to_string(nt)
+}
+
+/// Print the token kind precisely, without converting `$crate` into its respective crate name.
+pub fn token_kind_to_string(tok: &TokenKind) -> String {
+    State::new().token_kind_to_string(tok)
+}
+
+/// Print the token precisely, without converting `$crate` into its respective crate name.
+pub fn token_to_string(token: &Token) -> String {
+    State::new().token_to_string(token)
+}
+
+pub fn token_to_string_ext(token: &Token, convert_dollar_crate: bool) -> String {
+    State::new().token_to_string_ext(token, convert_dollar_crate)
+}
+
+pub fn ty_to_string(ty: &ast::Ty) -> String {
+    State::new().ty_to_string(ty)
+}
+
+pub fn bounds_to_string(bounds: &[ast::GenericBound]) -> String {
+    State::new().bounds_to_string(bounds)
+}
+
+pub fn pat_to_string(pat: &ast::Pat) -> String {
+    State::new().pat_to_string(pat)
+}
+
+pub fn expr_to_string(e: &ast::Expr) -> String {
+    State::new().expr_to_string(e)
+}
+
+pub fn tt_to_string(tt: &TokenTree) -> String {
+    State::new().tt_to_string(tt)
+}
+
+pub fn tts_to_string(tokens: &TokenStream) -> String {
+    State::new().tts_to_string(tokens)
+}
+
+pub fn stmt_to_string(stmt: &ast::Stmt) -> String {
+    State::new().stmt_to_string(stmt)
+}
+
+pub fn item_to_string(i: &ast::Item) -> String {
+    State::new().item_to_string(i)
+}
+
+pub fn generic_params_to_string(generic_params: &[ast::GenericParam]) -> String {
+    State::new().generic_params_to_string(generic_params)
+}
+
+pub fn path_to_string(p: &ast::Path) -> String {
+    State::new().path_to_string(p)
+}
+
+pub fn path_segment_to_string(p: &ast::PathSegment) -> String {
+    State::new().path_segment_to_string(p)
+}
+
+pub fn vis_to_string(v: &ast::Visibility) -> String {
+    State::new().vis_to_string(v)
+}
+
+pub fn block_to_string(blk: &ast::Block) -> String {
+    State::new().block_to_string(blk)
+}
+
+pub fn meta_list_item_to_string(li: &ast::NestedMetaItem) -> String {
+    State::new().meta_list_item_to_string(li)
+}
+
+pub fn attr_item_to_string(ai: &ast::AttrItem) -> String {
+    State::new().attr_item_to_string(ai)
+}
+
+pub fn attribute_to_string(attr: &ast::Attribute) -> String {
+    State::new().attribute_to_string(attr)
+}
+
+pub fn param_to_string(arg: &ast::Param) -> String {
+    State::new().param_to_string(arg)
+}
+
+pub fn to_string(f: impl FnOnce(&mut State<'_>)) -> String {
+    State::new().to_string(f)
+}