move number recognition from RobotLexer to ResolverUtils, so it can work with variable name start with digit

Author: lte2000

src/com/millennialmedia/intellibot/psi/RobotLexer.java

@@ -343,8 +343,9 @@ private boolean isVariable(int position) {
         // potential start of variable
         if (isVariableStart(position)) {
             position += 2;
-            if (isNumber(position))
-                return false;
+            // move number judgement in ResolveUtils
+            // if (isNumber(position))
+            //    return false;
             int count = 1;
             while (count > 0 && position < this.endOffset && position >= 0) {
                 if (isVariableEnd(position)) {

src/com/millennialmedia/intellibot/psi/ref/ResolverUtils.java

@@ -55,6 +55,8 @@ public static PsiElement resolveKeywordFromFile(@Nullable String keywordText, @N
     }
 
     private static final Pattern VARIABLE_BASENAME = Pattern.compile("([\\$\\@\\%\\&]\\{[a-zA-Z0-9 _]+)[^a-zA-Z0-9 _}].*");
+    private static final Pattern VARIABLE_IS_NUMBER = Pattern.compile("\\$\\{[-+]?[0-9.]+\\b.*");
+
     @Nullable
     public static PsiElement resolveVariableFromFile(@Nullable String variableText, @Nullable PsiFile file) {
         if (variableText == null) {
@@ -143,6 +145,10 @@ public static PsiElement resolveVariableFromStatement(@Nullable String variableT
                 }
             }
         }
+        if (VARIABLE_IS_NUMBER.matcher(variableText).matches()) {
+            // just return something, for number it don't need resolving
+            return parent;
+        }
         return null;
     }