Remove support for relative-url=<...> (#1567)

Follows suit from WebAssembly/component-model#353

Author: alexcrichton

crates/wasmparser/src/validator/names.rs

@@ -568,8 +568,7 @@ impl<'a> DependencyName<'a> {
     }
 }
 
-/// A dependency on an implementation either as `url=...` or
-/// `relative-url=...`
+/// A dependency on an implementation either as `url=...`
 #[derive(Debug, Clone, Hash, Eq, PartialEq, Ord, PartialOrd)]
 pub struct UrlName<'a>(&'a str);
 
@@ -649,17 +648,6 @@ impl<'a> ComponentNameParser<'a> {
             self.eat_optional_hash()?;
             return Ok(ParsedComponentNameKind::Url);
         }
-        // 'relative-url=<' <nonbrackets> '>' (',' <hashname>)?
-        if self.eat_str("relative-url=") {
-            self.expect_str("<")?;
-            let url = self.take_up_to('>')?;
-            if url.contains('<') {
-                bail!(self.offset, "relative-url cannot contain `<`");
-            }
-            self.expect_str(">")?;
-            self.eat_optional_hash()?;
-            return Ok(ParsedComponentNameKind::Url);
-        }
 
         // 'integrity=<' <integrity-metadata> '>'
         if self.eat_str("integrity=") {

tests/local/component-model/export.wast

@@ -61,7 +61,7 @@
   "not a valid export name")
 (assert_invalid
   (component (type (component (export "relative-url=<x>" (func)))))
-  "not a valid export name")
+  "not a valid extern name")
 (assert_invalid
   (component (type (component (export "locked-dep=<a:b>" (func)))))
   "not a valid export name")

tests/local/component-model/import.wast

@@ -287,21 +287,23 @@
   (component (import "url=<<>" (func)))
   "url cannot contain `<`")
 
-(component
-  (import "relative-url=<>" (func))
-  (import "relative-url=<a>" (func))
-  (import "relative-url=<a>,integrity=<sha256-a>" (func))
-)
+(assert_invalid
+  (component
+    (import "relative-url=<>" (func))
+    (import "relative-url=<a>" (func))
+    (import "relative-url=<a>,integrity=<sha256-a>" (func))
+  )
+  "not a valid extern name")
 
 (assert_invalid
   (component (import "relative-url=" (func)))
-  "expected `<` at ``")
+  "not a valid extern name")
 (assert_invalid
   (component (import "relative-url=<" (func)))
-  "failed to find `>`")
+  "not a valid extern name")
 (assert_invalid
   (component (import "relative-url=<<>" (func)))
-  "relative-url cannot contain `<`")
+  "not a valid extern name")
 
 (component
   (import "integrity=<sha256-a>" (func))