Fix issues reported by dscanner

.travis.yml

@@ -11,6 +11,7 @@ install:
   - export LD_LIBRARY_PATH="./linenoise-1.0:$LD_LIBRARY_PATH"
 
 script:
+  - dub lint
   - dub test --compiler=$DC
   - dub build --compiler=$DC
   - echo 10+3 | dub --compiler=$DC | grep 13

dscanner.ini

@@ -0,0 +1,2 @@
+[analysis.config.StaticAnalysisConfig]
+undocumented_declaration_check="disabled"

src/console.d

@@ -8,7 +8,7 @@ import core.stdc.string : strlen;
 import deimos.linenoise;
 import drepl;
 
-void main(string[] args)
+void main()
 {
     import colorize : color, cwriteln, fg;
 

src/drepl/engines/dmd.d

@@ -24,7 +24,9 @@ string mkdtemp()
     }
     else
     {
-        import std.format, std.random;
+        import std.format : format;
+        import std.random: uniform;
+
         string path;
         do
         {
@@ -38,7 +40,6 @@ string mkdtemp()
 
 DMDEngine dmdEngine()
 {
-    import core.sys.posix.unistd, std.random;
     auto compiler = environment.get("DMD", "dmd");
     auto tmpDir = mkdtemp();
     return DMDEngine(compiler, tmpDir);
@@ -193,7 +194,7 @@ private:
 
     string compileModule(string path)
     {
-        import std.regex;
+        import std.regex: ctRegex, replaceAll;
         auto args = [_compiler, "-I"~_tmpDir, "-of"~path~".so", "-fPIC",
                      "-shared", path, "-L-l:libphobos2.so"];
         foreach (i; 0 .. _id)
@@ -209,7 +210,8 @@ private:
 
     void* loadFunc(string path, string name)
     {
-        import core.runtime, core.demangle, core.sys.posix.dlfcn;
+        import core.runtime: Runtime;
+        import core.sys.posix.dlfcn: dlerror, dlsym;
 
         auto lib = Runtime.loadLibrary(path~".so");
         if (lib is null)
@@ -253,7 +255,7 @@ unittest
     alias ER = EngineResult;
     auto dmd = dmdEngine();
     assert(dmd.evalDecl("void foo(int) {}") == ER(true, "foo"));
-    auto er = dmd.evalStmt("foo(\"foo\");");
+    const auto er = dmd.evalStmt("foo(\"foo\");");
     assert(!er.success);
     assert(er.stdout.empty);
     assert(!er.stderr.empty);

src/drepl/interpreter.d

@@ -9,7 +9,13 @@ import std.algorithm, std.array, std.conv, std.string, std.typecons;
 
 struct InterpreterResult
 {
-    enum State { success, error, incomplete };
+    enum State
+    {
+        success,
+        error,
+        incomplete
+    }
+
     State state;
     string stdout, stderr;
 }
@@ -65,7 +71,8 @@ struct Interpreter(Engine) if (isEngine!Engine)
 private:
     enum Kind { Decl, Stmt, Expr, WhiteSpace, Incomplete, Error, }
 
-    import dparse.lexer, dparse.parser, dparse.rollback_allocator;
+    import dparse.lexer : getTokensForParser, LexerConfig, byToken, Token, StringCache, tok;
+    import dparse.parser : Parser;
 
     Kind classify(in char[] input)
     {
@@ -96,10 +103,11 @@ private:
         parser.fileName = "drepl";
         parser.setTokens(tokens);
         parser.allocator = &allocator;
-        parser.messageDg = delegate(string file, size_t ln, size_t col, string msg, bool isErr) {
-            if (isErr)
-                hasErr = true;
-        };
+
+        void messageDg (string, size_t, size_t, string, bool isErr) {
+            if (isErr) hasErr = true;
+        }
+        parser.messageDg = &messageDg;
         static if (kind == Kind.Decl)
         {
             do