DYN-7112: Fix DS parser to error early on finding import statements in code block nodes

src/Engine/ProtoCore/Parser/Parser.cs

@@ -2,18 +2,18 @@
 //#define ENABLE_INC_DEC_FIX
 using System;
 using System.Collections.Generic;
+using System.IO;
 using ProtoCore.AST;
 using ProtoCore.AST.AssociativeAST;
 using ProtoCore.DSASM;
-using ProtoCore.Properties;
 using ProtoCore.Utils;
+using ProtoCore.Properties;
 
-namespace ProtoCore.DesignScriptParser
-{
+namespace ProtoCore.DesignScriptParser {
 
 
 
-    public class Parser {
+public class Parser {
 	public const int _EOF = 0;
 	public const int _ident = 1;
 	public const int _number = 2;
@@ -890,6 +890,11 @@ void Hydrogen(out Node codeBlockNode) {
 	}
 
 	void Import_Statement(out ProtoCore.AST.AssociativeAST.AssociativeNode node) {
+		if (core.IsParsingCodeBlockNode)
+		{
+		   core.BuildStatus.LogSemanticError(Resources.ImportStatementNotSupported);
+		}
+
 		while (!(la.kind == 0 || la.kind == 34)) {SynErr(66); Get();}
 		string moduleName = "", typeName = "", alias = "";
 

src/Engine/ProtoCore/Parser/Scanner.cs

@@ -1,12 +1,11 @@
 
 using System;
-using System.Collections;
 using System.IO;
+using System.Collections;
 
-namespace ProtoCore.DesignScriptParser
-{
+namespace ProtoCore.DesignScriptParser {
 
-    public class Token {
+public class Token {
 	public int kind;    // token kind
 	public int pos;     // token position in bytes in the source text (starting at 0)
 	public int charPos;  // token position in characters in the source text (starting at 0)

src/Engine/ProtoCore/Parser/atg/Associative.atg

@@ -102,7 +102,13 @@ Hydrogen<out Node codeBlockNode>
 .
 
 Import_Statement<out ProtoCore.AST.AssociativeAST.AssociativeNode node>
-=  SYNC
+=   (.
+        if (core.IsParsingCodeBlockNode)
+        {
+            core.BuildStatus.LogSemanticError(Resources.ImportStatementNotSupported);
+        }
+    .)
+    SYNC
     (. 
        string moduleName = "", typeName = "", alias = "";
     .)
@@ -2028,9 +2034,6 @@ Associative_IdentifierList<out ProtoCore.AST.AssociativeAST.AssociativeNode node
                                             }
                                             else
                                             {
-                                                string rhsName = null;
-                                                ProtoCore.AST.AssociativeAST.ExprListNode dimList = null;
-                                                int dim = 0;
                                                 if (rnode is ProtoCore.AST.AssociativeAST.FunctionCallNode)
                                                 {
                                                     ProtoCore.AST.AssociativeAST.FunctionCallNode rhsFNode = rnode as ProtoCore.AST.AssociativeAST.FunctionCallNode;

src/Engine/ProtoCore/Utils/CompilerUtils.cs

@@ -415,11 +415,7 @@ private static void ParseUserCodeCore(Core core, string expression, out List<Ass
                 // Append the temporaries only if it is not a function def or class decl
                 bool isFunctionOrClassDef = n is FunctionDefinitionNode;
 
-                if (n is ImportNode)
-                {
-                    core.BuildStatus.LogSemanticError(Resources.ImportStatementNotSupported);
-                }
-                else if (n is ClassDeclNode)
+                if (n is ClassDeclNode)
                 {
                     core.BuildStatus.LogSemanticError(Resources.ClassDeclarationNotSupported);
                 }