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emitcabi.go: add version check macro and version-based const return type

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Rick Calixte 2025-04-10 19:44:36 -04:00
parent 1fa992f324
commit 9d72a3f601
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1 changed files with 32 additions and 1 deletions
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33
cmd/genbindings/emitcabi.go
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@ -790,6 +790,14 @@ extern "C" {
`)
// We need this macro for QObjectData::dynamicMetaObject for Qt 6.9
if filename == "qobject.h" && packageName == "qt6" {
ret.WriteString("// Based on the macro from Qt (LGPL v3), see https://www.qt.io/qt-licensing\n" +
"// Macro is trivial and used here under fair use\n" +
"// Usage does not imply derivation\n" +
"#define QT_VERSION_CHECK(major, minor, patch) ((major<<16)|(minor<<8)|(patch))\n\n")
}
foundTypesList := getReferencedTypes(src)
ret.WriteString("#ifdef __cplusplus\n")
@ -852,7 +860,16 @@ extern "C" {
continue // Can't call directly, have to go through our wrapper
}
ret.WriteString(fmt.Sprintf("%s %s(%s);\n", m.ReturnType.RenderTypeCabi(), cabiMethodName(c, m), emitParametersCabi(m, ifv(m.IsConst, "const ", "")+className+"*")))
if m.ReturnType.BecomesConstInVersion != nil && packageName == "qt6" {
ret.WriteString(fmt.Sprintf("// This method's return type was changed from non-const to const in Qt "+*m.ReturnType.BecomesConstInVersion) + "\n" +
"#if QT_VERSION >= QT_VERSION_CHECK(" + strings.Replace(*m.ReturnType.BecomesConstInVersion, `.`, `,`, -1) + ",0)\n" +
fmt.Sprintf("%s %s(%s);\n", "const "+m.ReturnType.RenderTypeCabi(), cabiMethodName(c, m), emitParametersCabi(m, ifv(m.IsConst, "const ", "")+className+"*")) +
"#else\n" +
fmt.Sprintf("%s %s(%s);\n", m.ReturnType.RenderTypeCabi(), cabiMethodName(c, m), emitParametersCabi(m, ifv(m.IsConst, "const ", "")+className+"*")) +
"#endif\n")
} else {
ret.WriteString(fmt.Sprintf("%s %s(%s);\n", m.ReturnType.RenderTypeCabi(), cabiMethodName(c, m), emitParametersCabi(m, ifv(m.IsConst, "const ", "")+className+"*")))
}
if m.IsSignal {
ret.WriteString(fmt.Sprintf("%s %s(%s* self, intptr_t slot);\n", m.ReturnType.RenderTypeCabi(), cabiConnectName(c, m), className))
@ -1249,6 +1266,20 @@ extern "C" {
"\n",
)
} else if m.ReturnType.BecomesConstInVersion != nil && strings.Contains(src.Filename, "qt6") {
ret.WriteString("" +
"// This method's return type was changed from non-const to const in Qt " + *m.ReturnType.BecomesConstInVersion + "\n" +
"#if QT_VERSION >= QT_VERSION_CHECK(" + strings.Replace(*m.ReturnType.BecomesConstInVersion, `.`, `,`, -1) + ",0)\n" +
"const " + m.ReturnType.RenderTypeCabi() + " " + methodPrefixName + "_" + m.SafeMethodName() + "(" + emitParametersCabi(m, ifv(m.IsConst, "const ", "")+methodPrefixName+"*") + ") {\n" +
"#else\n" +
m.ReturnType.RenderTypeCabi() + " " + methodPrefixName + "_" + m.SafeMethodName() + "(" + emitParametersCabi(m, ifv(m.IsConst, "const ", "")+methodPrefixName+"*") + ") {\n" +
"#endif\n" +
preamble + "\n" +
emitAssignCppToCabi("\treturn ", m.ReturnType, callTarget) +
"}\n\n",
)
} else {
ret.WriteString(fmt.Sprintf(