fix parsing Issues from #45 (#46)

* fix parsing outer attributes on struct fields

* fix parsing if expressions when condition include dereference expressions

Author: elegoff

community-rust-frontend/src/main/java/org/sonar/rust/RustGrammar.java

@@ -68,7 +68,7 @@ public void testTokens() {
 
     @Test
     public void testParsing() {
-        String sexpr = "let foo = &i|i;";
+        String sexpr = "*bar == None { true };";
 
         //Print out Ast node content for debugging purpose
 

community-rust-frontend/src/test/java/org/sonar/rust/RustLexerTest.java

@@ -29,7 +29,7 @@ public class ExpressionTest {
 
     @Test
     public void testScrutinee() {
-        assertThat(RustGrammar.create().build().rule(RustGrammar.SCRUTINEE))
+        assertThat(RustGrammar.create().build().rule(RustGrammar.EXPRESSION_EXCEPT_STRUCT))
                 .matches("a")
                 .matches("a || b")
                 .matches("a() || b")

community-rust-frontend/src/test/java/org/sonar/rust/parser/expressions/ExpressionTest.java

@@ -130,12 +130,18 @@ public void tesIfExpression() {
                         "                                                  \n" +
                         "                        break;\n" +
                         "                     }")
-                /*TODO .matches("if next.iter().all(|&i| i == 42) {\n" +
+                 .matches("if next.iter().all(|&i| i == 42) {\n" +
                         "                                                  \n" +
                         "                        break;\n" +
                         "                     }")
 
-                 */
+                .matches("if *bar == None {\n" +
+                        "        true\n" +
+                        "    } else {\n" +
+                        "        LOG_WARNING!(\"condition is false\");\n" +
+                        "        false\n" +
+                        "    }")
+                
 
 
         ;

community-rust-frontend/src/test/java/org/sonar/rust/parser/expressions/IfExpressionTest.java

@@ -39,7 +39,14 @@ public void testStruct() {
                         "    pub granted_list: HashSet<T>,\n" +
                         "    pub denied_list: HashSet<T>,\n" +
                         "}")
-
+                .matches("struct Message<'a> {\n" +
+                        "    #[serde(rename = \"c\")]\n" +
+                        "    command: Command,\n" +
+                        "    #[serde(borrow)]\n" +
+                        "    payload: Option<Cow<'a, str>>,\n" +
+                        "    #[serde(rename = \"s\")]\n" +
+                        "    identifier: Option<u16>,\n" +
+                        "}")
         ;
 
     }