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https://github.com/pezkuwichain/serde.git
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Merge pull request #2558 from Mingun/correct-span
Improve error reporting about mismatched signature in `with` and `default` attributes
This commit is contained in:
Oli Scherer
@@ -0,0 +1,22 @@
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//! Ensures that error message points to the path in attribute
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use serde_derive::Deserialize;
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#[derive(Deserialize)]
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#[serde(tag = "tag", content = "content")]
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enum Enum {
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// Newtype variants does not use the provided path, so it is forbidden here
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// Newtype(#[serde(default = "main")] u8),
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Tuple(
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u8,
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#[serde(default = "main")] i8,
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),
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Struct {
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#[serde(default = "main")]
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f1: u8,
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f2: u8,
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#[serde(default = "main")]
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f3: i8,
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},
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}
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fn main() {}
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@@ -0,0 +1,35 @@
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error[E0308]: `match` arms have incompatible types
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--> tests/ui/default-attribute/incorrect_type_enum_adjacently_tagged.rs:11:27
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|
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4 | #[derive(Deserialize)]
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| -----------
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| |
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| this is found to be of type `i8`
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| `match` arms have incompatible types
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...
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11 | #[serde(default = "main")] i8,
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| ^^^^^^ expected `i8`, found `()`
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error[E0308]: `match` arms have incompatible types
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--> tests/ui/default-attribute/incorrect_type_enum_adjacently_tagged.rs:14:27
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|
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4 | #[derive(Deserialize)]
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| -----------
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| |
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| this is found to be of type `u8`
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| `match` arms have incompatible types
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...
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14 | #[serde(default = "main")]
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| ^^^^^^ expected `u8`, found `()`
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error[E0308]: `match` arms have incompatible types
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--> tests/ui/default-attribute/incorrect_type_enum_adjacently_tagged.rs:17:27
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|
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4 | #[derive(Deserialize)]
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| -----------
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| |
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| this is found to be of type `i8`
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| `match` arms have incompatible types
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...
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17 | #[serde(default = "main")]
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| ^^^^^^ expected `i8`, found `()`
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@@ -0,0 +1,21 @@
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//! Ensures that error message points to the path in attribute
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use serde_derive::Deserialize;
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#[derive(Deserialize)]
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enum Enum {
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// Newtype variants does not use the provided path, so it is forbidden here
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// Newtype(#[serde(default = "main")] u8),
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Tuple(
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u8,
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#[serde(default = "main")] i8,
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),
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Struct {
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#[serde(default = "main")]
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f1: u8,
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f2: u8,
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#[serde(default = "main")]
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f3: i8,
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},
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}
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fn main() {}
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@@ -0,0 +1,35 @@
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error[E0308]: `match` arms have incompatible types
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--> tests/ui/default-attribute/incorrect_type_enum_externally_tagged.rs:10:27
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|
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4 | #[derive(Deserialize)]
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| -----------
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| |
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| this is found to be of type `i8`
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| `match` arms have incompatible types
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...
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10 | #[serde(default = "main")] i8,
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| ^^^^^^ expected `i8`, found `()`
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error[E0308]: `match` arms have incompatible types
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--> tests/ui/default-attribute/incorrect_type_enum_externally_tagged.rs:13:27
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|
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4 | #[derive(Deserialize)]
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| -----------
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| |
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| this is found to be of type `u8`
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| `match` arms have incompatible types
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...
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13 | #[serde(default = "main")]
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| ^^^^^^ expected `u8`, found `()`
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error[E0308]: `match` arms have incompatible types
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--> tests/ui/default-attribute/incorrect_type_enum_externally_tagged.rs:16:27
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|
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4 | #[derive(Deserialize)]
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| -----------
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| |
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| this is found to be of type `i8`
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| `match` arms have incompatible types
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...
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16 | #[serde(default = "main")]
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| ^^^^^^ expected `i8`, found `()`
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@@ -0,0 +1,19 @@
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//! Ensures that error message points to the path in attribute
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use serde_derive::Deserialize;
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#[derive(Deserialize)]
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#[serde(tag = "tag")]
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enum Enum {
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// Newtype variants does not use the provided path, so it is forbidden here
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// Newtype(#[serde(default = "main")] u8),
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// Tuple variants does not supported in internally tagged enums
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Struct {
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#[serde(default = "main")]
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f1: u8,
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f2: u8,
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#[serde(default = "main")]
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f3: i8,
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},
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}
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fn main() {}
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@@ -0,0 +1,23 @@
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error[E0308]: `match` arms have incompatible types
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--> tests/ui/default-attribute/incorrect_type_enum_internally_tagged.rs:11:27
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|
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4 | #[derive(Deserialize)]
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| -----------
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| |
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| this is found to be of type `u8`
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| `match` arms have incompatible types
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...
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11 | #[serde(default = "main")]
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| ^^^^^^ expected `u8`, found `()`
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error[E0308]: `match` arms have incompatible types
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--> tests/ui/default-attribute/incorrect_type_enum_internally_tagged.rs:14:27
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|
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4 | #[derive(Deserialize)]
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| -----------
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| |
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| this is found to be of type `i8`
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| `match` arms have incompatible types
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...
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14 | #[serde(default = "main")]
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| ^^^^^^ expected `i8`, found `()`
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@@ -0,0 +1,22 @@
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//! Ensures that error message points to the path in attribute
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use serde_derive::Deserialize;
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#[derive(Deserialize)]
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#[serde(untagged)]
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enum Enum {
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// Newtype variants does not use the provided path, so it is forbidden here
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// Newtype(#[serde(default = "main")] u8),
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Tuple(
|
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u8,
|
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#[serde(default = "main")] i8,
|
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),
|
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Struct {
|
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#[serde(default = "main")]
|
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f1: u8,
|
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f2: u8,
|
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#[serde(default = "main")]
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f3: i8,
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},
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}
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fn main() {}
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@@ -0,0 +1,35 @@
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error[E0308]: `match` arms have incompatible types
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--> tests/ui/default-attribute/incorrect_type_enum_untagged.rs:11:27
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|
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4 | #[derive(Deserialize)]
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| -----------
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| |
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| this is found to be of type `i8`
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| `match` arms have incompatible types
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...
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11 | #[serde(default = "main")] i8,
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| ^^^^^^ expected `i8`, found `()`
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error[E0308]: `match` arms have incompatible types
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--> tests/ui/default-attribute/incorrect_type_enum_untagged.rs:14:27
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|
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4 | #[derive(Deserialize)]
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| -----------
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| |
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| this is found to be of type `u8`
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| `match` arms have incompatible types
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...
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14 | #[serde(default = "main")]
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| ^^^^^^ expected `u8`, found `()`
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error[E0308]: `match` arms have incompatible types
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--> tests/ui/default-attribute/incorrect_type_enum_untagged.rs:17:27
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|
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4 | #[derive(Deserialize)]
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| -----------
|
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| |
|
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| this is found to be of type `i8`
|
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| `match` arms have incompatible types
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...
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17 | #[serde(default = "main")]
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| ^^^^^^ expected `i8`, found `()`
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@@ -0,0 +1,8 @@
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//! Ensures that error message points to the path in attribute
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use serde_derive::Deserialize;
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|
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#[derive(Deserialize)]
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#[serde(default = "main")]
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struct Newtype(#[serde(default = "main")] u8);
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fn main() {}
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@@ -0,0 +1,37 @@
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error[E0308]: mismatched types
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--> tests/ui/default-attribute/incorrect_type_newtype.rs:5:19
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|
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5 | #[serde(default = "main")]
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| ^^^^^^
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| |
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| expected `Newtype`, found `()`
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| expected due to this
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error[E0308]: `match` arms have incompatible types
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--> tests/ui/default-attribute/incorrect_type_newtype.rs:6:34
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|
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4 | #[derive(Deserialize)]
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| -----------
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| |
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| this is found to be of type `u8`
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| `match` arms have incompatible types
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5 | #[serde(default = "main")]
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6 | struct Newtype(#[serde(default = "main")] u8);
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| ^^^^^^ expected `u8`, found `()`
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error[E0308]: mismatched types
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--> tests/ui/default-attribute/incorrect_type_newtype.rs:5:19
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|
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5 | #[serde(default = "main")]
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| ^^^^^^ expected `Newtype`, found `()`
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6 | struct Newtype(#[serde(default = "main")] u8);
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| ------- expected due to this
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error[E0308]: mismatched types
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--> tests/ui/default-attribute/incorrect_type_newtype.rs:6:34
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|
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4 | #[derive(Deserialize)]
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| ----------- expected due to the type of this binding
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5 | #[serde(default = "main")]
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6 | struct Newtype(#[serde(default = "main")] u8);
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| ^^^^^^ expected `u8`, found `()`
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@@ -0,0 +1,14 @@
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//! Ensures that error message points to the path in attribute
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use serde_derive::Deserialize;
|
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|
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#[derive(Deserialize)]
|
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#[serde(default = "main")]
|
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struct Struct {
|
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#[serde(default = "main")]
|
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f1: u8,
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f2: u8,
|
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#[serde(default = "main")]
|
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f3: i8,
|
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}
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fn main() {}
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@@ -0,0 +1,58 @@
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error[E0308]: mismatched types
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--> tests/ui/default-attribute/incorrect_type_struct.rs:5:19
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|
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5 | #[serde(default = "main")]
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| ^^^^^^
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| |
|
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| expected `Struct`, found `()`
|
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| expected due to this
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|
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error[E0308]: `match` arms have incompatible types
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--> tests/ui/default-attribute/incorrect_type_struct.rs:7:23
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|
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4 | #[derive(Deserialize)]
|
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| -----------
|
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| |
|
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| this is found to be of type `u8`
|
||||
| `match` arms have incompatible types
|
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...
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7 | #[serde(default = "main")]
|
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| ^^^^^^ expected `u8`, found `()`
|
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|
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error[E0308]: `match` arms have incompatible types
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--> tests/ui/default-attribute/incorrect_type_struct.rs:10:23
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|
|
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4 | #[derive(Deserialize)]
|
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| -----------
|
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| |
|
||||
| this is found to be of type `i8`
|
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| `match` arms have incompatible types
|
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...
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10 | #[serde(default = "main")]
|
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| ^^^^^^ expected `i8`, found `()`
|
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|
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error[E0308]: mismatched types
|
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--> tests/ui/default-attribute/incorrect_type_struct.rs:5:19
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|
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5 | #[serde(default = "main")]
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| ^^^^^^ expected `Struct`, found `()`
|
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6 | struct Struct {
|
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| ------ expected due to this
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|
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error[E0308]: mismatched types
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--> tests/ui/default-attribute/incorrect_type_struct.rs:7:23
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|
|
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4 | #[derive(Deserialize)]
|
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| ----------- expected due to the type of this binding
|
||||
...
|
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7 | #[serde(default = "main")]
|
||||
| ^^^^^^ expected `u8`, found `()`
|
||||
|
||||
error[E0308]: mismatched types
|
||||
--> tests/ui/default-attribute/incorrect_type_struct.rs:10:23
|
||||
|
|
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4 | #[derive(Deserialize)]
|
||||
| ----------- expected due to the type of this binding
|
||||
...
|
||||
10 | #[serde(default = "main")]
|
||||
| ^^^^^^ expected `i8`, found `()`
|
||||
@@ -0,0 +1,11 @@
|
||||
//! Ensures that error message points to the path in attribute
|
||||
use serde_derive::Deserialize;
|
||||
|
||||
#[derive(Deserialize)]
|
||||
#[serde(default = "main")]
|
||||
struct Tuple(
|
||||
u8,
|
||||
#[serde(default = "main")] i8,
|
||||
);
|
||||
|
||||
fn main() {}
|
||||
@@ -0,0 +1,37 @@
|
||||
error[E0308]: mismatched types
|
||||
--> tests/ui/default-attribute/incorrect_type_tuple.rs:5:19
|
||||
|
|
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5 | #[serde(default = "main")]
|
||||
| ^^^^^^
|
||||
| |
|
||||
| expected `Tuple`, found `()`
|
||||
| expected due to this
|
||||
|
||||
error[E0308]: `match` arms have incompatible types
|
||||
--> tests/ui/default-attribute/incorrect_type_tuple.rs:8:23
|
||||
|
|
||||
4 | #[derive(Deserialize)]
|
||||
| -----------
|
||||
| |
|
||||
| this is found to be of type `i8`
|
||||
| `match` arms have incompatible types
|
||||
...
|
||||
8 | #[serde(default = "main")] i8,
|
||||
| ^^^^^^ expected `i8`, found `()`
|
||||
|
||||
error[E0308]: mismatched types
|
||||
--> tests/ui/default-attribute/incorrect_type_tuple.rs:5:19
|
||||
|
|
||||
5 | #[serde(default = "main")]
|
||||
| ^^^^^^ expected `Tuple`, found `()`
|
||||
6 | struct Tuple(
|
||||
| ----- expected due to this
|
||||
|
||||
error[E0308]: mismatched types
|
||||
--> tests/ui/default-attribute/incorrect_type_tuple.rs:8:23
|
||||
|
|
||||
4 | #[derive(Deserialize)]
|
||||
| ----------- expected due to the type of this binding
|
||||
...
|
||||
8 | #[serde(default = "main")] i8,
|
||||
| ^^^^^^ expected `i8`, found `()`
|
||||
@@ -0,0 +1,9 @@
|
||||
use serde_derive::Deserialize;
|
||||
|
||||
#[derive(Deserialize)]
|
||||
#[serde(default)]
|
||||
union Union {
|
||||
f: u8,
|
||||
}
|
||||
|
||||
fn main() {}
|
||||
@@ -0,0 +1,14 @@
|
||||
error: #[serde(default)] can only be used on structs
|
||||
--> tests/ui/default-attribute/union.rs:4:9
|
||||
|
|
||||
4 | #[serde(default)]
|
||||
| ^^^^^^^
|
||||
|
||||
error: Serde does not support derive for unions
|
||||
--> tests/ui/default-attribute/union.rs:4:1
|
||||
|
|
||||
4 | / #[serde(default)]
|
||||
5 | | union Union {
|
||||
6 | | f: u8,
|
||||
7 | | }
|
||||
| |_^
|
||||
@@ -0,0 +1,9 @@
|
||||
use serde_derive::Deserialize;
|
||||
|
||||
#[derive(Deserialize)]
|
||||
#[serde(default = "default_u")]
|
||||
union Union {
|
||||
f: u8,
|
||||
}
|
||||
|
||||
fn main() {}
|
||||
@@ -0,0 +1,14 @@
|
||||
error: #[serde(default = "...")] can only be used on structs
|
||||
--> tests/ui/default-attribute/union_path.rs:4:9
|
||||
|
|
||||
4 | #[serde(default = "default_u")]
|
||||
| ^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
error: Serde does not support derive for unions
|
||||
--> tests/ui/default-attribute/union_path.rs:4:1
|
||||
|
|
||||
4 | / #[serde(default = "default_u")]
|
||||
5 | | union Union {
|
||||
6 | | f: u8,
|
||||
7 | | }
|
||||
| |_^
|
||||
@@ -0,0 +1,7 @@
|
||||
use serde_derive::Deserialize;
|
||||
|
||||
#[derive(Deserialize)]
|
||||
#[serde(default)]
|
||||
struct Unit;
|
||||
|
||||
fn main() {}
|
||||
@@ -0,0 +1,7 @@
|
||||
error: #[serde(default)] can only be used on structs that have fields
|
||||
--> tests/ui/default-attribute/unit.rs:3:10
|
||||
|
|
||||
3 | #[derive(Deserialize)]
|
||||
| ^^^^^^^^^^^
|
||||
|
|
||||
= note: this error originates in the derive macro `Deserialize` (in Nightly builds, run with -Z macro-backtrace for more info)
|
||||
@@ -0,0 +1,7 @@
|
||||
use serde_derive::Deserialize;
|
||||
|
||||
#[derive(Deserialize)]
|
||||
#[serde(default = "default_u")]
|
||||
struct Unit;
|
||||
|
||||
fn main() {}
|
||||
@@ -0,0 +1,5 @@
|
||||
error: #[serde(default = "...")] can only be used on structs that have fields
|
||||
--> tests/ui/default-attribute/unit_path.rs:4:9
|
||||
|
|
||||
4 | #[serde(default = "default_u")]
|
||||
| ^^^^^^^^^^^^^^^^^^^^^
|
||||
@@ -0,0 +1,23 @@
|
||||
use serde_derive::{Deserialize, Serialize};
|
||||
|
||||
mod w {
|
||||
use serde::{Deserializer, Serializer};
|
||||
|
||||
pub fn deserialize<'de, D: Deserializer<'de>>(_: D) -> Result<(), D::Error> {
|
||||
unimplemented!()
|
||||
}
|
||||
pub fn serialize<T, S: Serializer>(_: S) -> Result<S::Ok, S::Error> {
|
||||
unimplemented!()
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Serialize, Deserialize)]
|
||||
struct W(#[serde(with = "w")] u8, u8);
|
||||
|
||||
#[derive(Serialize, Deserialize)]
|
||||
struct S(#[serde(serialize_with = "w::serialize")] u8, u8);
|
||||
|
||||
#[derive(Serialize, Deserialize)]
|
||||
struct D(#[serde(deserialize_with = "w::deserialize")] u8, u8);
|
||||
|
||||
fn main() {}
|
||||
@@ -0,0 +1,97 @@
|
||||
error[E0277]: the trait bound `&u8: Serializer` is not satisfied
|
||||
--> tests/ui/with/incorrect_type.rs:14:10
|
||||
|
|
||||
14 | #[derive(Serialize, Deserialize)]
|
||||
| ^^^^^^^^^ the trait `Serializer` is not implemented for `&u8`
|
||||
15 | struct W(#[serde(with = "w")] u8, u8);
|
||||
| --- required by a bound introduced by this call
|
||||
|
|
||||
= help: the following other types implement trait `Serializer`:
|
||||
&'a mut Formatter<'b>
|
||||
FlatMapSerializer<'a, M>
|
||||
_::_serde::__private::ser::content::ContentSerializer<E>
|
||||
note: required by a bound in `w::serialize`
|
||||
--> tests/ui/with/incorrect_type.rs:9:28
|
||||
|
|
||||
9 | pub fn serialize<T, S: Serializer>(_: S) -> Result<S::Ok, S::Error> {
|
||||
| ^^^^^^^^^^ required by this bound in `serialize`
|
||||
|
||||
error[E0061]: this function takes 1 argument but 2 arguments were supplied
|
||||
--> tests/ui/with/incorrect_type.rs:15:25
|
||||
|
|
||||
15 | struct W(#[serde(with = "w")] u8, u8);
|
||||
| ^^^ unexpected argument #2 of type `__S`
|
||||
|
|
||||
note: function defined here
|
||||
--> tests/ui/with/incorrect_type.rs:9:12
|
||||
|
|
||||
9 | pub fn serialize<T, S: Serializer>(_: S) -> Result<S::Ok, S::Error> {
|
||||
| ^^^^^^^^^ ----
|
||||
|
||||
error[E0277]: the trait bound `&u8: Serializer` is not satisfied
|
||||
--> tests/ui/with/incorrect_type.rs:15:25
|
||||
|
|
||||
15 | struct W(#[serde(with = "w")] u8, u8);
|
||||
| ^^^ the trait `Serializer` is not implemented for `&u8`
|
||||
|
|
||||
= help: the following other types implement trait `Serializer`:
|
||||
&'a mut Formatter<'b>
|
||||
FlatMapSerializer<'a, M>
|
||||
_::_serde::__private::ser::content::ContentSerializer<E>
|
||||
|
||||
error[E0308]: `?` operator has incompatible types
|
||||
--> tests/ui/with/incorrect_type.rs:15:25
|
||||
|
|
||||
15 | struct W(#[serde(with = "w")] u8, u8);
|
||||
| ^^^ expected `u8`, found `()`
|
||||
|
|
||||
= note: `?` operator cannot convert from `()` to `u8`
|
||||
|
||||
error[E0277]: the trait bound `&u8: Serializer` is not satisfied
|
||||
--> tests/ui/with/incorrect_type.rs:17:10
|
||||
|
|
||||
17 | #[derive(Serialize, Deserialize)]
|
||||
| ^^^^^^^^^ the trait `Serializer` is not implemented for `&u8`
|
||||
18 | struct S(#[serde(serialize_with = "w::serialize")] u8, u8);
|
||||
| -------------- required by a bound introduced by this call
|
||||
|
|
||||
= help: the following other types implement trait `Serializer`:
|
||||
&'a mut Formatter<'b>
|
||||
FlatMapSerializer<'a, M>
|
||||
_::_serde::__private::ser::content::ContentSerializer<E>
|
||||
note: required by a bound in `w::serialize`
|
||||
--> tests/ui/with/incorrect_type.rs:9:28
|
||||
|
|
||||
9 | pub fn serialize<T, S: Serializer>(_: S) -> Result<S::Ok, S::Error> {
|
||||
| ^^^^^^^^^^ required by this bound in `serialize`
|
||||
|
||||
error[E0061]: this function takes 1 argument but 2 arguments were supplied
|
||||
--> tests/ui/with/incorrect_type.rs:18:35
|
||||
|
|
||||
18 | struct S(#[serde(serialize_with = "w::serialize")] u8, u8);
|
||||
| ^^^^^^^^^^^^^^ unexpected argument #2 of type `__S`
|
||||
|
|
||||
note: function defined here
|
||||
--> tests/ui/with/incorrect_type.rs:9:12
|
||||
|
|
||||
9 | pub fn serialize<T, S: Serializer>(_: S) -> Result<S::Ok, S::Error> {
|
||||
| ^^^^^^^^^ ----
|
||||
|
||||
error[E0277]: the trait bound `&u8: Serializer` is not satisfied
|
||||
--> tests/ui/with/incorrect_type.rs:18:35
|
||||
|
|
||||
18 | struct S(#[serde(serialize_with = "w::serialize")] u8, u8);
|
||||
| ^^^^^^^^^^^^^^ the trait `Serializer` is not implemented for `&u8`
|
||||
|
|
||||
= help: the following other types implement trait `Serializer`:
|
||||
&'a mut Formatter<'b>
|
||||
FlatMapSerializer<'a, M>
|
||||
_::_serde::__private::ser::content::ContentSerializer<E>
|
||||
|
||||
error[E0308]: `?` operator has incompatible types
|
||||
--> tests/ui/with/incorrect_type.rs:21:37
|
||||
|
|
||||
21 | struct D(#[serde(deserialize_with = "w::deserialize")] u8, u8);
|
||||
| ^^^^^^^^^^^^^^^^ expected `u8`, found `()`
|
||||
|
|
||||
= note: `?` operator cannot convert from `()` to `u8`
|
||||
Reference in New Issue
Block a user