Replace proc-macro-error with proc-macro-error2

Fixes #72

positional_derive/Cargo.toml

@@ -10,7 +10,7 @@ documentation = "https://docs.rs/positional"
 proc-macro = true
 
 [dependencies]
-proc-macro-error = "1.0.4"
+proc-macro-error2 = "2.0"
 proc-macro2 = "1.0.39"
 quote = "1.0"
 syn = {version = "2.0.63", features = ["extra-traits", "full"]}

positional_derive/src/analyze.rs

@@ -1,4 +1,4 @@
-use proc_macro_error::abort;
+use proc_macro_error2::abort;
 use syn::{Data, DataStruct, Fields};
 
 mod field;

positional_derive/src/analyze/field.rs

@@ -1,4 +1,4 @@
-use proc_macro_error::abort;
+use proc_macro_error2::abort;
 use syn::{LitChar, LitInt, LitStr};
 
 const FIELD_ATTRIBUTE: &str = "field";

positional_derive/src/analyze/variant.rs

@@ -1,4 +1,4 @@
-use proc_macro_error::abort;
+use proc_macro_error2::abort;
 use syn::{Expr, Fields};
 
 const MATCHER_ATTRIBUTE: &str = "matcher";

positional_derive/src/lib.rs

@@ -1,5 +1,5 @@
 use proc_macro::TokenStream;
-use proc_macro_error::proc_macro_error;
+use proc_macro_error2::proc_macro_error;
 
 mod analyze;
 mod codegen;

positional_derive/src/lower/from_struct.rs

@@ -1,6 +1,6 @@
 use super::extract_option_type;
 use crate::analyze::{FieldAlignment, StructModel};
-use proc_macro_error::abort;
+use proc_macro_error2::abort;
 
 pub struct StructIr {
     pub container_identity: syn::Ident,

positional_derive/src/parse.rs

@@ -1,5 +1,5 @@
 use proc_macro2::TokenStream;
-use proc_macro_error::abort;
+use proc_macro_error2::abort;
 use syn::{Data, DeriveInput};
 
 pub type Ast = DeriveInput;