From 940a6ceb9a5b3d8c7c2ed53da67f5c14cc84925c Mon Sep 17 00:00:00 2001
From: wolfbeast <mcwerewolf@wolfbeast.com>
Date: Sat, 6 Apr 2019 10:33:24 +0200
Subject: Introduce Parser::warningAt

This reduces reporting an warning at a particular offset to its bare
essentials, simplifying calls.
---
 js/src/frontend/Parser.cpp | 26 ++++++++++++++++----------
 js/src/frontend/Parser.h   |  5 +++--
 2 files changed, 19 insertions(+), 12 deletions(-)

(limited to 'js/src/frontend')

diff --git a/js/src/frontend/Parser.cpp b/js/src/frontend/Parser.cpp
index a26520477..43f39dc23 100644
--- a/js/src/frontend/Parser.cpp
+++ b/js/src/frontend/Parser.cpp
@@ -633,6 +633,17 @@ Parser<ParseHandler>::warning(unsigned errorNumber, ...)
     return result;
 }
 
+template <typename ParseHandler>
+bool
+Parser<ParseHandler>::warningAt(uint32_t offset, unsigned errorNumber, ...)
+{
+    va_list args;
+    va_start(args, errorNumber);
+    bool result = reportHelper(ParseWarning, false, offset, errorNumber, args);
+    va_end(args);
+    return result;
+}
+
 template <typename ParseHandler>
 bool
 Parser<ParseHandler>::extraWarning(unsigned errorNumber, ...)
@@ -3858,8 +3869,7 @@ Parser<ParseHandler>::maybeParseDirective(Node list, Node possibleDirective, boo
         } else if (directive == context->names().useAsm) {
             if (pc->isFunctionBox())
                 return asmJS(list);
-            return reportWithOffset(ParseWarning, false, directivePos.begin,
-                                    JSMSG_USE_ASM_DIRECTIVE_FAIL);
+            return warningAt(directivePos.begin, JSMSG_USE_ASM_DIRECTIVE_FAIL);
         }
     }
     return true;
@@ -3903,11 +3913,9 @@ Parser<ParseHandler>::statementList(YieldHandling yieldHandling)
         if (!warnedAboutStatementsAfterReturn) {
             if (afterReturn) {
                 if (!handler.isStatementPermittedAfterReturnStatement(next)) {
-                    if (!reportWithOffset(ParseWarning, false, statementBegin,
-                                          JSMSG_STMT_AFTER_RETURN))
-                    {
+                    if (!warningAt(statementBegin, JSMSG_STMT_AFTER_RETURN))
                         return null();
-                    }
+
                     warnedAboutStatementsAfterReturn = true;
                 }
             } else if (handler.isReturnStatement(next)) {
@@ -5836,11 +5844,9 @@ Parser<ParseHandler>::switchStatement(YieldHandling yieldHandling)
             if (!warnedAboutStatementsAfterReturn) {
                 if (afterReturn) {
                     if (!handler.isStatementPermittedAfterReturnStatement(stmt)) {
-                        if (!reportWithOffset(ParseWarning, false, statementBegin,
-                                              JSMSG_STMT_AFTER_RETURN))
-                        {
+                        if (!warningAt(statementBegin, JSMSG_STMT_AFTER_RETURN))
                             return null();
-                        }
+
                         warnedAboutStatementsAfterReturn = true;
                     }
                 } else if (handler.isReturnStatement(stmt)) {
diff --git a/js/src/frontend/Parser.h b/js/src/frontend/Parser.h
index 27a10458b..6bd7e586e 100644
--- a/js/src/frontend/Parser.h
+++ b/js/src/frontend/Parser.h
@@ -909,8 +909,6 @@ class Parser final : private JS::AutoGCRooter, public StrictModeGetter
   public:
     bool reportWithNode(ParseReportKind kind, bool strict, Node pn, unsigned errorNumber, ...);
     bool reportNoOffset(ParseReportKind kind, bool strict, unsigned errorNumber, ...);
-    bool reportWithOffset(ParseReportKind kind, bool strict, uint32_t offset, unsigned errorNumber,
-                          ...);
 
     /* Report the given error at the current offset. */
     void error(unsigned errorNumber, ...);
@@ -935,6 +933,9 @@ class Parser final : private JS::AutoGCRooter, public StrictModeGetter
     /* Report the given warning at the current offset. */
     MOZ_MUST_USE bool warning(unsigned errorNumber, ...);
 
+    /* Report the given warning at the given offset. */
+    MOZ_MUST_USE bool warningAt(uint32_t offset, unsigned errorNumber, ...);
+
     /*
      * If extra warnings are enabled, report the given warning at the current
      * offset.
-- 
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