7 files changed, 89 insertions, 2 deletions

diff --git a/crates/ra_syntax/src/lib.rs b/crates/ra_syntax/src/lib.rs
index e1088e296..c56bc9f16 100644
--- a/crates/ra_syntax/src/lib.rs
+++ b/crates/ra_syntax/src/lib.rs
@@ -40,7 +40,7 @@ pub use crate::{
     syntax_text::SyntaxText,
     syntax_node::{Direction,  SyntaxNode, WalkEvent, TreeArc, SyntaxTreeBuilder, SyntaxElement, SyntaxToken},
     ptr::{SyntaxNodePtr, AstPtr},
-    parsing::{tokenize, Token},
+    parsing::{tokenize, classify_literal, Token},
 };
 
 use ra_text_edit::AtomTextEdit;
diff --git a/crates/ra_syntax/src/parsing.rs b/crates/ra_syntax/src/parsing.rs
index ad5668a65..15d69c5ab 100644
--- a/crates/ra_syntax/src/parsing.rs
+++ b/crates/ra_syntax/src/parsing.rs
@@ -11,7 +11,7 @@ use crate::{
     syntax_node::GreenNode,
 };
 
-pub use self::lexer::{tokenize, Token};
+pub use self::lexer::{tokenize, classify_literal, Token};
 
 pub(crate) use self::reparsing::incremental_reparse;
 
diff --git a/crates/ra_syntax/src/parsing/lexer.rs b/crates/ra_syntax/src/parsing/lexer.rs
index 36e841609..3ae42912c 100644
--- a/crates/ra_syntax/src/parsing/lexer.rs
+++ b/crates/ra_syntax/src/parsing/lexer.rs
@@ -214,3 +214,12 @@ fn scan_literal_suffix(ptr: &mut Ptr) {
     }
     ptr.bump_while(is_ident_continue);
 }
+
+pub fn classify_literal(text: &str) -> Option<Token> {
+    let tkn = next_token(text);
+    if !tkn.kind.is_literal() || tkn.len.to_usize() != text.len() {
+        return None;
+    }
+
+    Some(tkn)
+}
diff --git a/crates/ra_syntax/tests/data/parser/inline/err/0010_wrong_order_fns.rs b/crates/ra_syntax/tests/data/parser/inline/err/0010_wrong_order_fns.rs
new file mode 100644
index 000000000..16edee95d
--- /dev/null
+++ b/crates/ra_syntax/tests/data/parser/inline/err/0010_wrong_order_fns.rs
@@ -0,0 +1,2 @@
+async unsafe fn foo() {}
+unsafe const fn bar() {}
diff --git a/crates/ra_syntax/tests/data/parser/inline/err/0010_wrong_order_fns.txt b/crates/ra_syntax/tests/data/parser/inline/err/0010_wrong_order_fns.txt
new file mode 100644
index 000000000..220191ffa
--- /dev/null
+++ b/crates/ra_syntax/tests/data/parser/inline/err/0010_wrong_order_fns.txt
@@ -0,0 +1,39 @@
+SOURCE_FILE@[0; 50)
+  ERROR@[0; 5)
+    ASYNC_KW@[0; 5) "async"
+    err: `expected fn, trait or impl`
+  WHITESPACE@[5; 6) " "
+  FN_DEF@[6; 24)
+    UNSAFE_KW@[6; 12) "unsafe"
+    WHITESPACE@[12; 13) " "
+    FN_KW@[13; 15) "fn"
+    WHITESPACE@[15; 16) " "
+    NAME@[16; 19)
+      IDENT@[16; 19) "foo"
+    PARAM_LIST@[19; 21)
+      L_PAREN@[19; 20) "("
+      R_PAREN@[20; 21) ")"
+    WHITESPACE@[21; 22) " "
+    BLOCK@[22; 24)
+      L_CURLY@[22; 23) "{"
+      R_CURLY@[23; 24) "}"
+  WHITESPACE@[24; 25) "\n"
+  ERROR@[25; 31)
+    UNSAFE_KW@[25; 31) "unsafe"
+    err: `expected fn, trait or impl`
+  WHITESPACE@[31; 32) " "
+  FN_DEF@[32; 49)
+    CONST_KW@[32; 37) "const"
+    WHITESPACE@[37; 38) " "
+    FN_KW@[38; 40) "fn"
+    WHITESPACE@[40; 41) " "
+    NAME@[41; 44)
+      IDENT@[41; 44) "bar"
+    PARAM_LIST@[44; 46)
+      L_PAREN@[44; 45) "("
+      R_PAREN@[45; 46) ")"
+    WHITESPACE@[46; 47) " "
+    BLOCK@[47; 49)
+      L_CURLY@[47; 48) "{"
+      R_CURLY@[48; 49) "}"
+  WHITESPACE@[49; 50) "\n"
diff --git a/crates/ra_syntax/tests/data/parser/inline/ok/0128_combined_fns.rs b/crates/ra_syntax/tests/data/parser/inline/ok/0128_combined_fns.rs
new file mode 100644
index 000000000..46af91b82
--- /dev/null
+++ b/crates/ra_syntax/tests/data/parser/inline/ok/0128_combined_fns.rs
@@ -0,0 +1,2 @@
+unsafe async fn foo() {}
+const unsafe fn bar() {}
diff --git a/crates/ra_syntax/tests/data/parser/inline/ok/0128_combined_fns.txt b/crates/ra_syntax/tests/data/parser/inline/ok/0128_combined_fns.txt
new file mode 100644
index 000000000..2a16aeb61
--- /dev/null
+++ b/crates/ra_syntax/tests/data/parser/inline/ok/0128_combined_fns.txt
@@ -0,0 +1,35 @@
+SOURCE_FILE@[0; 50)
+  FN_DEF@[0; 24)
+    UNSAFE_KW@[0; 6) "unsafe"
+    WHITESPACE@[6; 7) " "
+    ASYNC_KW@[7; 12) "async"
+    WHITESPACE@[12; 13) " "
+    FN_KW@[13; 15) "fn"
+    WHITESPACE@[15; 16) " "
+    NAME@[16; 19)
+      IDENT@[16; 19) "foo"
+    PARAM_LIST@[19; 21)
+      L_PAREN@[19; 20) "("
+      R_PAREN@[20; 21) ")"
+    WHITESPACE@[21; 22) " "
+    BLOCK@[22; 24)
+      L_CURLY@[22; 23) "{"
+      R_CURLY@[23; 24) "}"
+  WHITESPACE@[24; 25) "\n"
+  FN_DEF@[25; 49)
+    CONST_KW@[25; 30) "const"
+    WHITESPACE@[30; 31) " "
+    UNSAFE_KW@[31; 37) "unsafe"
+    WHITESPACE@[37; 38) " "
+    FN_KW@[38; 40) "fn"
+    WHITESPACE@[40; 41) " "
+    NAME@[41; 44)
+      IDENT@[41; 44) "bar"
+    PARAM_LIST@[44; 46)
+      L_PAREN@[44; 45) "("
+      R_PAREN@[45; 46) ")"
+    WHITESPACE@[46; 47) " "
+    BLOCK@[47; 49)
+      L_CURLY@[47; 48) "{"
+      R_CURLY@[48; 49) "}"
+  WHITESPACE@[49; 50) "\n"