From ab94961a639cc7b364fcb1e3f68531792c312990 Mon Sep 17 00:00:00 2001
From: Marcelo Lira <marcelo.lira@openbossa.org>
Date: Thu, 22 Dec 2011 14:23:22 -0300
Subject: Function signatures including return types are reported as invalid.

This fixes bug #1101: "Report invalid function signatures in typesystem"
http://bugs.pyside.org/show_bug.cgi?id=1101
---
 typesystem.cpp | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/typesystem.cpp b/typesystem.cpp
index bbf7e86..8808e53 100644
--- a/typesystem.cpp
+++ b/typesystem.cpp
@@ -436,6 +436,21 @@ static QString getNamePrefix(StackElement* element)
     return names.join(".");
 }
 
+// Returns empty string if there's no error.
+static QString checkSignatureError(const QString& signature, const QString& tag)
+{
+    QString funcName = signature.left(signature.indexOf('(')).trimmed();
+    static QRegExp whiteSpace("\\s");
+    if (!funcName.startsWith("operator ") && funcName.contains(whiteSpace)) {
+        return QString("Error in <%1> tag signature attribute '%2'.\n"
+                       "White spaces aren't allowed in function names, "
+                       "and return types should not be part of the signature.")
+                  .arg(tag)
+                  .arg(signature);
+    }
+    return QString();
+}
+
 bool Handler::startElement(const QString &, const QString &n,
                            const QString &, const QXmlAttributes &atts)
 {
@@ -562,6 +577,11 @@ bool Handler::startElement(const QString &, const QString &n,
         if (element->type == StackElement::FunctionTypeEntry) {
             QString signature = attributes["signature"];
             name = signature.left(signature.indexOf('(')).trimmed();
+            QString errorString = checkSignatureError(signature, "function");
+            if (!errorString.isEmpty()) {
+                m_error = errorString;
+                return false;
+            }
             QString rename = attributes["rename"];
             if (!rename.isEmpty()) {
                 static QRegExp functionNameRegExp("^[a-zA-Z_][a-zA-Z0-9_]*$");
@@ -1457,6 +1477,12 @@ bool Handler::startElement(const QString &, const QString &n,
                 return false;
             }
 
+            QString errorString = checkSignatureError(signature, "add-function");
+            if (!errorString.isEmpty()) {
+                m_error = errorString;
+                return false;
+            }
+
             AddedFunction func(signature, attributes["return-type"], since);
             func.setStatic(attributes["static"] == "yes");
             if (!signature.contains("("))
@@ -1496,6 +1522,12 @@ bool Handler::startElement(const QString &, const QString &n,
                 return false;
             }
 
+            QString errorString = checkSignatureError(signature, "modify-function");
+            if (!errorString.isEmpty()) {
+                m_error = errorString;
+                return false;
+            }
+
             FunctionModification mod(since);
             m_currentSignature = mod.signature = signature;
 
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