Add warning message to wrongly writtern field attribute

Bump darling to 0.12 which includes the parsing and error reporting fixes. Closes #233 darling issue: #233
jonasbb · Jan 5, 2021 · 95fc97b · 95fc97b
1 parent 812a898
commit 95fc97b
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diff --git a/serde_with_macros/Cargo.toml b/serde_with_macros/Cargo.toml
@@ -21,7 +21,7 @@ proc-macro = true
 maintenance = {status = "actively-developed"}
 
 [dependencies]
-darling = "0.11.0"
+darling = "0.12.0"
 proc-macro2 = "1.0.1"
 quote = "1.0.0"
 

diff --git a/serde_with_macros/tests/compile-fail/serde_as.stderr b/serde_with_macros/tests/compile-fail/serde_as.stderr
@@ -87,3 +87,9 @@ error: Unknown field: `unknw2`
    |
 59 |     #[serde_as(unknwn1 = "Hello", unknw2 = "World")]
    |                                   ^^^^^^
+
+error: Unable to parse attribute: expected literal
+  --> $DIR/serde_as.rs:67:55
+   |
+67 |     #[serde_as(serialize_as = "123", deserialize_as = DisplayFromStr)]
+   |                                                       ^^^^^^^^^^^^^^