Update to latest 'derive_utils'.

contrib/codegen/Cargo.toml

@@ -21,7 +21,7 @@ proc-macro = true
 
 [dependencies.derive_utils]
 git = "https://github.com/SergioBenitez/derive-utils"
-rev = "160da392"
+rev = "5fad71394"
 
 [dependencies]
 quote = "0.6"

core/codegen_next/Cargo.toml

@@ -22,7 +22,7 @@ rocket_http = { version = "0.4.0-dev", path = "../http/" }
 
 [dependencies.derive_utils]
 git = "https://github.com/SergioBenitez/derive-utils"
-rev = "160da392"
+rev = "5fad71394"
 
 [dev-dependencies]
 rocket = { version = "0.4.0-dev", path = "../lib" }

core/codegen_next/src/derive/from_form.rs

@@ -1,5 +1,5 @@
 use proc_macro::{Span, TokenStream};
-use derive_utils::{*, syn, ext::{TypeExt, Split3}};
+use derive_utils::{*, ext::{TypeExt, Split3}};
 
 #[derive(FromMeta)]
 struct Form {
@@ -23,13 +23,13 @@ fn is_valid_field_name(s: &str) -> bool {
 }
 
 impl FromMeta for FormField {
-    fn from_meta(meta: &syn::Meta) -> Result<Self> {
-        let string = <SpanWrapped<String>>::from_meta(meta)?;
-        if !is_valid_field_name(&string.value) {
-            return Err(string.value_span.error("invalid form field name"));
+    fn from_meta(meta: MetaItem) -> Result<Self> {
+        let string = String::from_meta(meta)?;
+        if !is_valid_field_name(&string) {
+            return Err(meta.value_span().error("invalid form field name"));
         }
 
-        Ok(FormField { span: string.value_span, name: string.value })
+        Ok(FormField { span: meta.value_span(), name: string })
     }
 }
 

core/codegen_next/src/http_codegen.rs

@@ -1,7 +1,6 @@
-use syn;
 use quote::ToTokens;
 use proc_macro2::TokenStream as TokenStream2;
-use derive_utils::{SpanWrapped, FromMeta, Result, ext::Split2};
+use derive_utils::{FromMeta, MetaItem, Result, ext::Split2};
 use rocket_http as http;
 
 pub struct ContentType(http::ContentType);
@@ -11,13 +10,13 @@ pub struct Status(http::Status);
 struct MediaType(http::MediaType);
 
 impl FromMeta for Status {
-    fn from_meta(meta: &syn::Meta) -> Result<Self> {
-        let num = <SpanWrapped<usize>>::from_meta(meta)?;
-        if num.value < 100 || num.value >= 600 {
-            return Err(num.value_span.error("status must be in range [100, 600)"));
+    fn from_meta(meta: MetaItem) -> Result<Self> {
+        let num = usize::from_meta(meta)?;
+        if num < 100 || num >= 600 {
+            return Err(meta.value_span().error("status must be in range [100, 600)"));
         }
 
-        Ok(Status(http::Status::raw(num.value as u16)))
+        Ok(Status(http::Status::raw(num as u16)))
     }
 }
 
@@ -29,12 +28,10 @@ impl ToTokens for Status {
 }
 
 impl FromMeta for ContentType {
-    fn from_meta(meta: &syn::Meta) -> Result<Self> {
-        let s = <SpanWrapped<String>>::from_meta(meta)?;
-        let parsed = http::ContentType::parse_flexible(&s.value)
-            .ok_or_else(|| s.value_span.error("invalid or unknown content-type"))?;
-
-        Ok(ContentType(parsed))
+    fn from_meta(meta: MetaItem) -> Result<Self> {
+        http::ContentType::parse_flexible(&String::from_meta(meta)?)
+            .map(ContentType)
+            .ok_or(meta.value_span().error("invalid or unknown content-type"))
     }
 }
 

core/codegen_next/src/lib.rs

@@ -10,7 +10,7 @@ extern crate rocket_http;
 mod derive;
 mod http_codegen;
 
-crate use derive_utils::{syn, proc_macro2};
+crate use derive_utils::proc_macro2;
 
 use proc_macro::TokenStream;
 

core/codegen_next/tests/ui-fail/from_form.rs

@@ -74,14 +74,14 @@ struct MyForm1 {
 #[derive(FromForm)]
 struct MyForm2 {
     #[form("blah")]
-    //~^ ERROR unexpected literal
+    //~^ ERROR expected key/value
     my_field: String,
 }
 
 #[derive(FromForm)]
 struct MyForm3 {
     #[form(123)]
-    //~^ ERROR unexpected literal
+    //~^ ERROR expected key/value
     my_field: String,
 }
 
@@ -110,7 +110,7 @@ struct MyForm6 {
 #[derive(FromForm)]
 struct MyForm7 {
     #[form(field)]
-    //~^ ERROR malformed parameter
+    //~^ ERROR expected literal or key/value
     my_field: String,
 }
 

core/codegen_next/tests/ui-fail/from_form.stderr

@@ -133,20 +133,20 @@ note: error occurred while deriving `FromForm`
 60 | #[derive(FromForm)]
    |          ^^^^^^^^
 
-error: malformed attribute
+error: malformed attribute: expected list
   --> $DIR/from_form.rs:69:7
    |
 69 |     #[form]
    |       ^^^^
    |
-   = help: expected syntax: #[attr(key = value, ..)]
+   = help: expected syntax: #[form(key = value, ..)]
 note: error occurred while deriving `FromForm`
   --> $DIR/from_form.rs:67:10
    |
 67 | #[derive(FromForm)]
    |          ^^^^^^^^
 
-error: unexpected literal
+error: expected key/value pair
   --> $DIR/from_form.rs:76:12
    |
 76 |     #[form("blah")]
@@ -158,7 +158,7 @@ note: error occurred while deriving `FromForm`
 74 | #[derive(FromForm)]
    |          ^^^^^^^^
 
-error: unexpected literal
+error: expected key/value pair
   --> $DIR/from_form.rs:83:12
    |
 83 |     #[form(123)]
@@ -170,7 +170,7 @@ note: error occurred while deriving `FromForm`
 81 | #[derive(FromForm)]
    |          ^^^^^^^^
 
-error: unexpected attribute parameter: beep
+error: unexpected attribute parameter: `beep`
   --> $DIR/from_form.rs:90:12
    |
 90 |     #[form(beep = "bop")]
@@ -194,7 +194,7 @@ note: error occurred while deriving `FromForm`
 95 | #[derive(FromForm)]
    |          ^^^^^^^^
 
-error: invalid value: expected string
+error: invalid value: expected string literal
    --> $DIR/from_form.rs:105:20
     |
 105 |     #[form(field = true)]
@@ -206,7 +206,7 @@ note: error occurred while deriving `FromForm`
 103 | #[derive(FromForm)]
     |          ^^^^^^^^
 
-error: malformed parameter: expected key/value pair
+error: expected literal or key/value pair
    --> $DIR/from_form.rs:112:12
     |
 112 |     #[form(field)]
@@ -218,7 +218,7 @@ note: error occurred while deriving `FromForm`
 110 | #[derive(FromForm)]
     |          ^^^^^^^^
 
-error: invalid value: expected string
+error: invalid value: expected string literal
    --> $DIR/from_form.rs:119:20
     |
 119 |     #[form(field = 123)]

core/codegen_next/tests/ui-fail/from_form_value.rs

@@ -40,6 +40,6 @@ enum Bar1 {
 #[derive(FromFormValue)]
 enum Bar2 {
     #[form(value)]
-    //~^ ERROR malformed parameter
+    //~^ ERROR expected literal or key/value
     A,
 }

core/codegen_next/tests/ui-fail/from_form_value.stderr

@@ -67,7 +67,7 @@ note: error occurred while deriving `FromFormValue`
 27 | #[derive(FromFormValue)]
    |          ^^^^^^^^^^^^^
 
-error: invalid value: expected string
+error: invalid value: expected string literal
   --> $DIR/from_form_value.rs:35:20
    |
 35 |     #[form(value = 123)]
@@ -79,7 +79,7 @@ note: error occurred while deriving `FromFormValue`
 33 | #[derive(FromFormValue)]
    |          ^^^^^^^^^^^^^
 
-error: malformed parameter: expected key/value pair
+error: expected literal or key/value pair
   --> $DIR/from_form_value.rs:42:12
    |
 42 |     #[form(value)]