module scope op, add support for partial string and allow after `,[(`

src/dcd/server/autocomplete/complete.d

@@ -68,11 +68,14 @@ public AutocompleteResponse complete(const AutocompleteRequest request,
 		fakeIdent.type = tok!"identifier";
 	}
 
+	const bool dotId = beforeTokens.length >= 2 &&
+		beforeTokens[$-1] == tok!"identifier" && beforeTokens[$-2] == tok!".";
+
 	// detects if the completion request uses the current module `ModuleDeclaration`
 	// as access chain. In this case removes this access chain, and just keep the dot
 	// because within a module semantic is the same (`myModule.stuff` -> `.stuff`).
-	if (tokenArray.length >= 3 && tokenArray[0] == tok!"module" &&
-		beforeTokens[$-1] == tok!".")
+	if (tokenArray.length >= 3 && tokenArray[0] == tok!"module" && beforeTokens.length &&
+		(beforeTokens[$-1] == tok!"." || dotId))
 	{
 		const upper = tokenArray.countUntil!(a => a.type == tok!";");
 		bool isSame = true;
@@ -80,11 +83,12 @@ public AutocompleteResponse complete(const AutocompleteRequest request,
 		if (upper != -1 && beforeTokens.length >= upper * 2)
 			foreach (immutable i; 0 .. upper)
 		{
-			const j = beforeTokens.length - upper + i - 1;
+			const j = beforeTokens.length - upper + i - 1 - ubyte(dotId);
 			// verify that the chain is well located after an expr or a decl
 			if (i == 0)
 			{
-				if (beforeTokens[j].type.among(tok!"{", tok!"}", tok!";"))
+				if (beforeTokens[j].type.among(tok!"{", tok!"}", tok!";", tok!"[",
+					tok!"(", tok!",",  tok!":"))
 					continue;
 			}
 			// compare the end of the "before tokens" (access chain)
@@ -99,9 +103,15 @@ public AutocompleteResponse complete(const AutocompleteRequest request,
 		}
 
 		// replace the "before tokens" with a pattern making the remaining
-		// part of the completions think that it's a "Module Scope Operator".
+		// parts of the completion process think that it's a "Module Scope Operator".
 		if (isSame)
-			beforeTokens = assumeSorted([const Token(tok!"{"), const Token(tok!".")]);
+		{
+			if (dotId)
+				beforeTokens = assumeSorted([const Token(tok!"{"), const Token(tok!"."),
+					cast(const) beforeTokens[$-1]]);
+			else
+				beforeTokens = assumeSorted([const Token(tok!"{"), const Token(tok!".")]);
+		}
 	}
 
 	if (beforeTokens.length >= 2)
@@ -200,21 +210,21 @@ AutocompleteResponse dotCompletion(T)(T beforeTokens, const(Token)[] tokenArray,
 		response.setCompletions(pair.scope_, getExpression(beforeTokens),
 			cursorPosition, CompletionType.identifiers, false, partial);
 		break;
+	//  these tokens before a "." mean "Module Scope Operator"
+	case tok!":":
 	case tok!"(":
 	case tok!"[":
-	case tok!":":
-		break;
-	//  these tokens before a "." means "Module Scope Operator"
 	case tok!"{":
 	case tok!";":
 	case tok!"}":
+	case tok!",":
 		auto allocator = scoped!(ASTAllocator)();
 		RollbackAllocator rba;
 		ScopeSymbolPair pair = generateAutocompleteTrees(tokenArray, allocator,
 			&rba, 1, moduleCache);
 		scope(exit) pair.destroy();
 		response.setCompletions(pair.scope_, getExpression(beforeTokens),
-			1, CompletionType.identifiers, false, "stdin");
+			1, CompletionType.identifiers, false, partial);
 		break;
 	default:
 		break;
@@ -520,7 +530,9 @@ void setCompletions(T)(ref AutocompleteResponse response,
 		foreach (s; currentSymbols.filter!(a => isPublicCompletionKind(a.kind)
 				&& a.kind != CompletionKind.importSymbol
 				&& a.kind != CompletionKind.dummy
-				&& a.symbolFile == partial))
+				&& a.symbolFile == "stdin"
+				&& (partial !is null && toUpper(a.name.data).startsWith(toUpper(partial))
+					|| partial is null)))
 		{
 			response.completions ~= makeSymbolCompletionInfo(s, s.kind);
 		}

tests/tc_currmod_fqn/expected2.txt

@@ -0,0 +1,3 @@
+identifiers
+var1	v
+var2	v

tests/tc_currmod_fqn/file2.d

@@ -0,0 +1 @@
+module m; int var1, var2; auto a = [m.var1,m.v ];

tests/tc_currmod_fqn/run.sh

@@ -1,5 +1,7 @@
 set -e
 set -u
 
-../../bin/dcd-client $1 file.d -c82 > actual.txt
-diff actual.txt expected.txt
+../../bin/dcd-client $1 file1.d -c82 > actual1.txt
+diff actual1.txt expected1.txt
+../../bin/dcd-client $1 file2.d -c46 > actual2.txt
+diff actual2.txt expected2.txt

tests/tc_global_dot/run.sh

@@ -1,5 +0,0 @@
-set -e
-set -u
-
-../../bin/dcd-client $1 file.d -c59 > actual.txt
-diff actual.txt expected.txt

tests/tc_module_scope_op/expected2.txt

@@ -0,0 +1,3 @@
+identifiers
+var1	v
+var2	v

tests/tc_module_scope_op/file2.d

@@ -0,0 +1 @@
+module m; int var1, var2; auto a = [.var1,.v ];

tests/tc_module_scope_op/run.sh

@@ -0,0 +1,7 @@
+set -e
+set -u
+
+../../bin/dcd-client $1 file1.d -c59 > actual1.txt
+diff actual1.txt expected1.txt
+../../bin/dcd-client $1 file2.d -c44 > actual2.txt
+diff actual2.txt expected2.txt