Updated to not need blacklist

Author: korken89

cortex-m-rt/macros/src/lib.rs

@@ -844,7 +844,6 @@ fn check_attr_whitelist(attrs: &[Attribute], caller: WhiteListCaller) -> Result<
         "forbid",
         "cold",
     ];
-    let cortex_m_rt_blacklist = &["entry", "exception", "interrupt", "pre_init"];
 
     'o: for attr in attrs {
         for val in whitelist {
@@ -853,35 +852,22 @@ fn check_attr_whitelist(attrs: &[Attribute], caller: WhiteListCaller) -> Result<
             }
         }
 
-        for val in cortex_m_rt_blacklist {
-            if eq(&attr, &val) {
-                let err_str = match caller {
-                    WhiteListCaller::Entry => {
-                        &"this attribute is not allowed on a cortex-m-rt entry point"
-                    }
-                    WhiteListCaller::Exception => {
-                        &"this attribute is not allowed on an exception handler"
-                    }
-                    WhiteListCaller::Interrupt => {
-                        &"this attribute is not allowed on an interrupt handler"
-                    }
-                    WhiteListCaller::PreInit => {
-                        &"this attribute is not allowed on an interrupt handler"
-                    }
-                };
-
-                return Err(parse::Error::new(attr.span(), err_str)
-                    .to_compile_error()
-                    .into());
+        let err_str = match caller {
+            WhiteListCaller::Entry => "this attribute is not allowed on a cortex-m-rt entry point",
+            WhiteListCaller::Exception => {
+                "this attribute is not allowed on an exception handler controlled by cortex-m-rt"
             }
-        }
+            WhiteListCaller::Interrupt => {
+                "this attribute is not allowed on an interrupt handler controlled by cortex-m-rt"
+            }
+            WhiteListCaller::PreInit => {
+                "this attribute is not allowed on a pre-init controlled by cortex-m-rt"
+            }
+        };
 
-        return Err(parse::Error::new(
-            attr.span(),
-            "this attribute is not allowed on a function controlled by cortex-m-rt",
-        )
-        .to_compile_error()
-        .into());
+        return Err(parse::Error::new(attr.span(), &err_str)
+            .to_compile_error()
+            .into());
     }
 
     Ok(())

cortex-m-rt/tests/compile-fail/whitelist-1.rs

@@ -6,13 +6,13 @@ extern crate panic_halt;
 
 use cortex_m_rt::{entry, exception, interrupt};
 
-#[inline] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
+#[inline] //~ ERROR this attribute is not allowed on a cortex-m-rt entry point
 #[entry]
 fn foo() -> ! {
     loop {}
 }
 
-#[inline] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
+#[inline] //~ ERROR this attribute is not allowed on an exception handler controlled by cortex-m-rt
 #[exception]
 fn SysTick() {}
 
@@ -22,11 +22,11 @@ enum interrupt {
     USART2,
 }
 
-#[inline] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
+#[inline] //~ ERROR this attribute is not allowed on an interrupt handler controlled by cortex-m-rt
 #[interrupt]
 fn USART1() {}
 
 #[cfg(feature = "device")]
-#[cfg_attr(feature = "device", inline)] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
+#[cfg_attr(feature = "device", inline)] //~ ERROR this attribute is not allowed on an interrupt handler controlled by cortex-m-rt
 #[interrupt]
 fn USART2() {}

cortex-m-rt/tests/compile-fail/whitelist-2.rs

@@ -6,13 +6,13 @@ extern crate panic_halt;
 
 use cortex_m_rt::{entry, exception, interrupt};
 
-#[export_name = "not_allowed"] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
+#[export_name = "not_allowed"] //~ ERROR this attribute is not allowed on a cortex-m-rt entry point
 #[entry]
 fn foo() -> ! {
     loop {}
 }
 
-#[export_name = "not_allowed"] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
+#[export_name = "not_allowed"] //~ ERROR this attribute is not allowed on an exception handler controlled by cortex-m-rt
 #[exception]
 fn SysTick() {}
 
@@ -22,11 +22,11 @@ enum interrupt {
     USART2,
 }
 
-#[export_name = "not_allowed"] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
+#[export_name = "not_allowed"] //~ ERROR this attribute is not allowed on an interrupt handler controlled by cortex-m-rt
 #[interrupt]
 fn USART1() {}
 
 #[cfg(feature = "device")]
-#[cfg_attr(feature = "device", export_name = "not_allowed")] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
+#[cfg_attr(feature = "device", export_name = "not_allowed")] //~ ERROR this attribute is not allowed on an interrupt handler controlled by cortex-m-rt
 #[interrupt]
 fn USART2() {}

cortex-m-rt/tests/compile-fail/whitelist-3.rs

@@ -6,13 +6,13 @@ extern crate panic_halt;
 
 use cortex_m_rt::{entry, exception, interrupt};
 
-#[no_mangle] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
+#[no_mangle] //~ ERROR this attribute is not allowed on a cortex-m-rt entry point
 #[entry]
 fn foo() -> ! {
     loop {}
 }
 
-#[no_mangle] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
+#[no_mangle] //~ ERROR this attribute is not allowed on an exception handler controlled by cortex-m-rt
 #[exception]
 fn SysTick() {}
 
@@ -22,11 +22,11 @@ enum interrupt {
     USART2,
 }
 
-#[no_mangle] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
+#[no_mangle] //~ ERROR this attribute is not allowed on an interrupt handler controlled by cortex-m-rt
 #[interrupt]
 fn USART1() {}
 
 #[cfg(feature = "device")]
-#[cfg_attr(feature = "device", no_mangle)] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
+#[cfg_attr(feature = "device", no_mangle)] //~ ERROR this attribute is not allowed on an interrupt handler controlled by cortex-m-rt
 #[interrupt]
 fn USART2() {}

cortex-m-rt/tests/compile-fail/whitelist-4.rs

@@ -6,13 +6,13 @@ extern crate panic_halt;
 
 use cortex_m_rt::{entry, exception, interrupt};
 
-#[must_use] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
+#[must_use] //~ ERROR this attribute is not allowed on a cortex-m-rt entry point
 #[entry]
 fn foo() -> ! {
     loop {}
 }
 
-#[must_use] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
+#[must_use] //~ ERROR this attribute is not allowed on an exception handler controlled by cortex-m-rt
 #[exception]
 fn SysTick() {}
 
@@ -22,11 +22,11 @@ enum interrupt {
     USART2,
 }
 
-#[must_use] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
+#[must_use] //~ ERROR this attribute is not allowed on an interrupt handler controlled by cortex-m-rt
 #[interrupt]
 fn USART1() {}
 
 #[cfg(feature = "device")]
-#[cfg_attr(feature = "device", must_use)] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
+#[cfg_attr(feature = "device", must_use)] //~ ERROR this attribute is not allowed on an interrupt handler controlled by cortex-m-rt
 #[interrupt]
 fn USART2() {}