Use ScriptParserBase features to parse linker script expressions.

Previously, we have re-implemented utility functions such as `expect`
or `next` in LinkerScript.cpp. This patch reuses the existing
implementation that is in ScriptParser.cpp.

llvm-svn: 267255

1 files changed, 6 insertions, 2 deletions

diff --git a/lld/ELF/ScriptParser.cpp b/lld/ELF/ScriptParser.cpp
index b8d3a78..2bc0bbc 100644
--- a/lld/ELF/ScriptParser.cpp
+++ b/lld/ELF/ScriptParser.cpp
@@ -43,8 +43,12 @@ void ScriptParserBase::printErrorPos() {
 void ScriptParserBase::setError(const Twine &Msg) {
   if (Error)
     return;
-  error("line " + Twine(getPos()) + ": " + Msg);
-  printErrorPos();
+  if (Input.empty()) {
+    error(Msg);
+  } else {
+    error("line " + Twine(getPos()) + ": " + Msg);
+    printErrorPos();
+  }
   Error = true;
 }