fixed resolving of inherited constants (#45)

Author: i582

server/src/e2e/suite/testcases/resolve/contracts.test

@@ -101,3 +101,18 @@ contract JettonMinter {
 6:12 -> 4:9 resolved
 7:13 -> 2:4 resolved
 8:12 -> 4:25 resolved
+
+========================================================================
+Contract constant from trait
+========================================================================
+trait Foo {
+    const FOO: Int = 100;
+}
+
+contract JettonMinter with Foo {
+    get fun foo(): Int {
+        return self.<caret>FOO;
+    }
+}
+------------------------------------------------------------------------
+6:20 -> 1:10 resolved

server/src/psi/Reference.ts

@@ -210,10 +210,10 @@ export class Reference {
             if (methodRef) {
                 if (!this.processNamedEls(proc, state, qualifierType.methods())) return false
                 if (!this.processNamedEls(proc, state, qualifierType.ownFields())) return false
-                if (!this.processNamedEls(proc, state, qualifierType.ownConstants())) return false
+                if (!this.processNamedEls(proc, state, qualifierType.constants())) return false
             } else {
                 if (!this.processNamedEls(proc, state, qualifierType.ownFields())) return false
-                if (!this.processNamedEls(proc, state, qualifierType.ownConstants())) return false
+                if (!this.processNamedEls(proc, state, qualifierType.constants())) return false
                 if (!this.processNamedEls(proc, state, qualifierType.methods())) return false
             }
         }

server/src/types/BaseTy.ts

@@ -66,6 +66,11 @@ export class StorageMembersOwnerTy<Anchor extends StorageMembersOwner> extends B
         return this.anchor.ownConstants()
     }
 
+    public constants(): Constant[] {
+        if (this.anchor === null) return []
+        return this.anchor.constants()
+    }
+
     public methods(): Fun[] {
         if (this.anchor === null) return []
         return this.anchor.methods()