Fix dlang-community/D-Scanner#895

Author: 0-v-0

src/dparse/ast.d

@@ -4195,6 +4195,33 @@ unittest // issue #526
     assert(ed.type.typeSuffixes.length == 2);
 }
 
+unittest // issue #895
+{
+    import dparse.lexer, dparse.parser, dparse.rollback_allocator;
+
+    string src = q{
+        private immutable bool hasPreviewIn = ((in int[256] a) { return __traits(isRef, a); })(int[256].init);
+        private enum Foo = int[256].init;
+    };
+
+    RollbackAllocator ra;
+    auto cf = LexerConfig("", StringBehavior.source);
+    auto ca = StringCache(16);
+    uint errorCount;
+    Module m = parseModule(getTokensForParser(src, cf, &ca), "", &ra, null, &errorCount);
+
+    assert(m);
+    assert(errorCount == 0);
+    assert(m.declarations.length == 2);
+    auto decl = m.declarations[0].variableDeclaration;
+    assert(decl);
+    auto init = decl.declarators[0].initializer;
+    assert(init);
+    assert(init.nonVoidInitializer);
+    assert(init.nonVoidInitializer.assignExpression);
+    assert(m.declarations[1].variableDeclaration);
+}
+
 unittest // Differentiate between no and empty DDOC comments, e.g. for DDOC unittests
 {
     import dparse.lexer, dparse.parser, dparse.rollback_allocator;

src/dparse/parser.d

@@ -5902,6 +5902,36 @@ class Parser
      *     | $(LITERAL IstringLiteral)
      *     ;)
      */
+    Type parsePrimaryExpressionType()
+    {
+        auto startIndex = index;
+        auto node = allocator.make!Type;
+        if (!moreTokens)
+        {
+            error("type expected");
+            return null;
+        }
+        switch (current.type)
+        {
+        case tok!"const":
+        case tok!"immutable":
+        case tok!"inout":
+        case tok!"shared":
+            if (!peekIs(tok!"("))
+                mixin(parseNodeQ!(`node.typeConstructors`, `TypeConstructors`));
+            break;
+        default:
+        }
+        mixin(parseNodeQ!(`node.type2`, `Type2`));
+        StackBuffer typeSuffixes;
+        while (moreTokens() && currentIsOneOf(tok!"[", tok!"*", tok!"delegate", tok!"function"))
+            if (!typeSuffixes.put(parseTypeSuffix()))
+                return null;
+        ownArray(node.typeSuffixes, typeSuffixes);
+        node.tokens = tokens[startIndex .. index];
+        return node;
+    }
+
     PrimaryExpression parsePrimaryExpression()
     {
         mixin(traceEnterAndExit!(__FUNCTION__));
@@ -5930,7 +5960,7 @@ class Parser
             {
                 node.typeConstructor = advance();
                 mixin(tokenCheck!"(");
-                mixin(parseNodeQ!(`node.type`, `Type`));
+                mixin(parseNodeQ!(`node.type`, `PrimaryExpressionType`));
                 mixin(tokenCheck!")");
                 mixin(tokenCheck!".");
                 const ident = expect(tok!"identifier");
@@ -5940,7 +5970,7 @@ class Parser
             }
         foreach (B; BasicTypes) { case B: }
         {
-            node.type = parseType();
+            node.type = parsePrimaryExpressionType();
             if (currentIs(tok!"."))
             {
                 advance();