fix #382 - No completion when current string is a keyword

src/dcd/server/autocomplete/complete.d

@@ -57,6 +57,15 @@ public AutocompleteResponse complete(const AutocompleteRequest request,
 	auto stringCache = StringCache(StringCache.defaultBucketCount);
 	auto beforeTokens = getTokensBeforeCursor(request.sourceCode,
 		request.cursorPosition, stringCache, tokenArray);
+
+	// allows to get completion on keyword, typically "is"
+	if (beforeTokens.length && isKeyword(beforeTokens[$-1].type))
+	{
+		Token* fakeIdent = cast(Token*) (&beforeTokens[$-1]);
+		fakeIdent.text = str(fakeIdent.type);
+		fakeIdent.type = tok!"identifier";
+	}
+
 	if (beforeTokens.length >= 2)
 	{
 		if (beforeTokens[$ - 1] == tok!"(" || beforeTokens[$ - 1] == tok!"["

tests/tc_complete_kw/expected1.txt

@@ -0,0 +1,2 @@
+identifiers
+isBig	v

tests/tc_complete_kw/file1.d

@@ -0,0 +1 @@
+bool isBig; void foo(){is} 

tests/tc_complete_kw/file2.d

@@ -0,0 +1 @@
+struct F{bool isBig;} void foo(){F f; f.is} 

tests/tc_complete_kw/run.sh

@@ -0,0 +1,8 @@
+set -e
+set -u
+
+../../bin/dcd-client $1 file1.d -c25 > actual1.txt
+diff actual1.txt expected1.txt
+
+../../bin/dcd-client $1 file2.d -c42 > actual2.txt
+diff actual2.txt expected1.txt