Merge pull request #18 from YuhanLiin/pre-entry-interrupt

Allow enabling interrupts before entry and pre-interrupt init functions

Author: cr1901

macros/src/lib.rs

@@ -0,0 +1,5 @@
+error: expected `interrupt_enable` or no arguments at all
+ --> tests/ui/entry_bad_arg.rs:5:9
+  |
+5 | #[entry(arg)]
+  |         ^^^

macros/tests/ui/entry_args.stderr

@@ -0,0 +1,13 @@
+#![no_main]
+
+use msp430::interrupt::CriticalSection;
+use msp430_rt_macros::entry;
+
+fn init(cs: CriticalSection) -> u32 {
+    32
+}
+
+#[entry(interrupt_enable(pre_interrupt = init))]
+fn main(_i: bool) -> ! {
+    loop {}
+}

macros/tests/ui/entry_args.rs renamed to macros/tests/ui/entry_bad_arg.rs

@@ -0,0 +1,7 @@
+error[E0308]: mismatched types
+  --> tests/ui/entry_preinterrupt_mismatch.rs:10:1
+   |
+10 | #[entry(interrupt_enable(pre_interrupt = init))]
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found `u32`
+   |
+   = note: this error originates in the attribute macro `entry` (in Nightly builds, run with -Z macro-backtrace for more info)

macros/tests/ui/entry_bad_arg.stderr

@@ -0,0 +1,10 @@
+#![no_main]
+
+use msp430_rt_macros::entry;
+
+fn init() {}
+
+#[entry(interrupt_enable(pre_interrupt = init))]
+fn main() -> ! {
+    loop {}
+}

macros/tests/ui/entry_preinterrupt_mismatch.rs

@@ -0,0 +1,14 @@
+error[E0061]: this function takes 0 arguments but 1 argument was supplied
+ --> tests/ui/entry_preinterrupt_no_arg.rs:7:42
+  |
+7 | #[entry(interrupt_enable(pre_interrupt = init))]
+  | -----------------------------------------^^^^---
+  | |                                        |
+  | |                                        expected 0 arguments
+  | supplied 1 argument
+  |
+note: function defined here
+ --> tests/ui/entry_preinterrupt_no_arg.rs:5:4
+  |
+5 | fn init() {}
+  |    ^^^^

macros/tests/ui/entry_preinterrupt_mismatch.stderr

@@ -0,0 +1,13 @@
+#![no_main]
+
+use msp430::interrupt::CriticalSection;
+use msp430_rt_macros::entry;
+
+fn init<'a>(cs: CriticalSection<'a>) -> CriticalSection<'a> {
+    cs
+}
+
+#[entry(interrupt_enable(pre_interrupt = init))]
+fn main(_cs: CriticalSection) -> ! {
+    loop {}
+}

macros/tests/ui/entry_preinterrupt_no_arg.rs

@@ -0,0 +1,11 @@
+error[E0597]: `cs` does not live long enough
+  --> tests/ui/entry_preinterrupt_return_cs.rs:10:1
+   |
+10 | #[entry(interrupt_enable(pre_interrupt = init))]
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
+   | |                                              |
+   | |                                              `cs` dropped here while still borrowed
+   | borrowed value does not live long enough
+   | borrow later stored here
+   |
+   = note: this error originates in the attribute macro `entry` (in Nightly builds, run with -Z macro-backtrace for more info)