Added chained imports test

src/frontend/parser.nim

@@ -688,7 +688,7 @@ proc forEachStmt(self: Parser): Statement =
     self.currentLoop = enclosingLoop
 
 
-proc parse*(self: Parser, tokens: seq[Token], file: string, lines: seq[tuple[start, stop: int]], source: string): seq[Declaration]
+proc parse*(self: Parser, tokens: seq[Token], file: string, lines: seq[tuple[start, stop: int]], source: string, persist: bool = false): seq[Declaration]
 proc findOperators(self: Parser, tokens: seq[Token])
 
 
@@ -1250,7 +1250,7 @@ proc findOperators(self: Parser, tokens: seq[Token]) =
             self.error("invalid state: found malformed tokenizer input while looking for operators (missing EOF)", token)
 
 
-proc parse*(self: Parser, tokens: seq[Token], file: string, lines: seq[tuple[start, stop: int]], source: string): seq[Declaration] =
+proc parse*(self: Parser, tokens: seq[Token], file: string, lines: seq[tuple[start, stop: int]], source: string, persist: bool = false): seq[Declaration] =
     ## Parses a sequence of tokens into a sequence of AST nodes
     self.tokens = tokens
     self.file = file
@@ -1258,7 +1258,8 @@ proc parse*(self: Parser, tokens: seq[Token], file: string, lines: seq[tuple[sta
     self.currentLoop = LoopContext.None
     self.currentFunction = nil
     self.scopeDepth = 0
-    self.operators = newOperatorTable()
+    if not persist:
+        self.operators = newOperatorTable()
     self.tree = @[]
     self.source = source
     self.lines = lines

tests/a.pn

@@ -0,0 +1,4 @@
+import std;
+import b;
+
+print("a");

tests/b.pn

@@ -0,0 +1,3 @@
+import std;
+
+print("b");