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https://github.com/mappu/miqt.git
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genbindings/cabi: merge forward+reverse type renderers
This commit is contained in:
parent
b1e7220f14
commit
1e1714a163
@ -8,6 +8,23 @@ import (
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func (p CppParameter) RenderTypeCabi() string {
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if p.ParameterType == "QString" {
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return "struct miqt_string*"
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} else if _, ok := p.QListOf(); ok {
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return "struct miqt_array*"
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} else if _, ok := p.QSetOf(); ok {
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return "struct miqt_array*"
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} else if (p.Pointer || p.ByRef) && p.QtClassType() {
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return cabiClassName(p.ParameterType) + "*"
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} else if p.QtClassType() && !p.Pointer {
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// Even if C++ returns by value, CABI is returning a heap copy (new'd, not malloc'd)
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return cabiClassName(p.ParameterType) + "*"
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}
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ret := p.ParameterType
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switch p.ParameterType {
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case "uchar":
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@ -74,25 +91,6 @@ func (p CppParameter) RenderTypeCabi() string {
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return ret // ignore const
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}
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func emitReturnTypeCabi(p CppParameter) string {
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if p.ParameterType == "QString" {
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return "struct miqt_string*"
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} else if _, ok := p.QListOf(); ok {
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return "struct miqt_array*"
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} else if (p.Pointer || p.ByRef) && p.QtClassType() {
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return cabiClassName(p.ParameterType) + "*"
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} else if p.QtClassType() && !p.Pointer {
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// Even if C++ returns by value, CABI is returning a heap copy (new'd, not malloc'd)
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return cabiClassName(p.ParameterType) + "*"
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} else {
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return p.RenderTypeCabi()
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}
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}
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func (p CppParameter) RenderTypeQtCpp() string {
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cppType := p.UnderlyingType()
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@ -169,113 +167,112 @@ func emitParametersCabi(m CppMethod, selfType string) string {
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return strings.Join(tmp, ", ")
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}
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func emitParametersCABI2CppForwarding(params []CppParameter) (preamble string, forwarding string) {
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func emitParametersCABI2CppForwarding(params []CppParameter, indent string) (preamble string, forwarding string) {
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tmp := make([]string, 0, len(params)+1)
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for _, p := range params {
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if p.ParameterType == "QString" {
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// The CABI has accepted two parameters - need to convert to one real QString
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// Create it on the stack
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preamble += "\tQString " + p.ParameterName + "_QString = QString::fromUtf8(&" + p.ParameterName + "->data, " + p.ParameterName + "->len);\n"
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tmp = append(tmp, p.ParameterName+"_QString")
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} else if listType, ok := p.QListOf(); ok {
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if listType.ParameterType == "QString" {
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// miqt_array<miqt_string*>
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// Combo (3 parameters)
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preamble += "\t" + p.ParameterType + " " + p.ParameterName + "_QList;\n"
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preamble += "\t" + p.ParameterName + "_QList.reserve(" + p.ParameterName + "->len);\n"
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preamble += "\tmiqt_string** " + p.ParameterName + "_arr = static_cast<miqt_string**>(" + p.ParameterName + "->data);\n"
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preamble += "\tfor(size_t i = 0; i < " + p.ParameterName + "->len; ++i) {\n"
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preamble += "\t\t" + p.ParameterName + "_QList.push_back(QString::fromUtf8(& " + p.ParameterName + "_arr[i]->data, " + p.ParameterName + "_arr[i]->len));\n"
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preamble += "\t}\n"
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tmp = append(tmp, p.ParameterName+"_QList")
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} else {
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// The CABI has accepted two parameters - need to convert to one real QList<>
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// Create it on the stack
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preamble += "\t" + p.ParameterType + " " + p.ParameterName + "_QList;\n"
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preamble += "\t" + p.ParameterName + "_QList.reserve(" + p.ParameterName + "->len);\n"
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if listType.QtClassType() && !listType.Pointer {
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preamble += "\t" + listType.PointerTo().RenderTypeCabi() + "* " + p.ParameterName + "_arr = static_cast<" + listType.PointerTo().RenderTypeCabi() + "*>(" + p.ParameterName + "->data);\n"
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preamble += "\tfor(size_t i = 0; i < " + p.ParameterName + "->len; ++i) {\n"
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preamble += "\t\t" + p.ParameterName + "_QList.push_back(*(" + p.ParameterName + "_arr[i]));\n"
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} else if listType.IsFlagType() {
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preamble += "\t" + listType.RenderTypeCabi() + "* " + p.ParameterName + "_arr = static_cast<" + listType.RenderTypeCabi() + "*>(" + p.ParameterName + "->data);\n"
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preamble += "\tfor(size_t i = 0; i < " + p.ParameterName + "->len; ++i) {\n"
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preamble += "\t\t" + p.ParameterName + "_QList.push_back(static_cast<" + listType.RenderTypeQtCpp() + ">(" + p.ParameterName + "_arr[i]));\n"
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} else {
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preamble += "\t" + listType.RenderTypeCabi() + "* " + p.ParameterName + "_arr = static_cast<" + listType.RenderTypeCabi() + "*>(" + p.ParameterName + "->data);\n"
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preamble += "\tfor(size_t i = 0; i < " + p.ParameterName + "->len; ++i) {\n"
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preamble += "\t\t" + p.ParameterName + "_QList.push_back(" + p.ParameterName + "_arr[i]);\n"
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}
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preamble += "\t}\n"
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tmp = append(tmp, p.ParameterName+"_QList")
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}
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} else if p.IntType() {
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// Use the raw ParameterType to select an explicit integer overload
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// Don't use RenderTypeCabi() since it canonicalizes some int types for CABI
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castSrc := p.ParameterName
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castType := p.RenderTypeQtCpp()
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if p.ByRef { // e.g. QDataStream::operator>>() overloads
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castSrc = "*" + castSrc
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}
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if p.ParameterType == "qint64" ||
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p.ParameterType == "quint64" ||
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p.ParameterType == "qlonglong" ||
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p.ParameterType == "qulonglong" ||
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p.ParameterType == "qint8" {
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// QDataStream::operator>>() by reference (qint64)
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// QLockFile::getLockInfo() by pointer
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// QTextStream::operator>>() by reference (qlonglong + qulonglong)
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// QDataStream::operator>>() qint8
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// CABI has these as int64_t* (long int) which fails a static_cast to qint64& (long long int&)
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// Hack a hard C-style cast
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tmp = append(tmp, "("+castType+")("+castSrc+")")
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} else {
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// Use static_cast<> safely
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tmp = append(tmp, "static_cast<"+castType+">("+castSrc+")")
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}
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} else if p.ByRef {
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if p.Pointer {
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// By ref and by pointer
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// This happens for QDataStream &QDataStream::operator>>(char *&s)
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// We are only using one level of indirection
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tmp = append(tmp, p.ParameterName)
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} else {
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// By ref and not by pointer
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// We changed RenderTypeCabi() to render this as a pointer
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// Need to dereference so we can pass as reference to the actual Qt C++ function
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//tmp = append(tmp, "*"+p.ParameterName)
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tmp = append(tmp, "*"+p.ParameterName)
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}
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} else if p.QtClassType() && !p.Pointer {
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// CABI takes all Qt types by pointer, even if C++ wants them by value
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// Dereference the passed-in pointer
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tmp = append(tmp, "*"+p.ParameterName)
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// } else if p.QtClassType() && p.Pointer {
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// We need this static_cast<> anyway to convert from PQt (void*) to
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// the real Qt type
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// tmp = append(tmp, "static_cast<"+p.ParameterType+"*>("+p.ParameterName+")")
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} else {
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tmp = append(tmp, p.ParameterName)
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}
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addPre, addFwd := emitCABI2CppForwarding(p, indent)
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preamble += addPre
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tmp = append(tmp, addFwd)
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}
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return preamble, strings.Join(tmp, ", ")
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}
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func emitCABI2CppForwarding(p CppParameter, indent string) (preamble string, forwarding string) {
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if p.ParameterType == "QString" {
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// The CABI has accepted two parameters - need to convert to one real QString
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// Create it on the stack
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preamble += indent + "QString " + p.ParameterName + "_QString = QString::fromUtf8(&" + p.ParameterName + "->data, " + p.ParameterName + "->len);\n"
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return preamble, p.ParameterName + "_QString"
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} else if listType, ok := p.QListOf(); ok {
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if listType.ParameterType == "QString" {
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// miqt_array<miqt_string*>
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// Combo (3 parameters)
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preamble += indent + p.ParameterType + " " + p.ParameterName + "_QList;\n"
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preamble += indent + p.ParameterName + "_QList.reserve(" + p.ParameterName + "->len);\n"
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preamble += indent + "miqt_string** " + p.ParameterName + "_arr = static_cast<miqt_string**>(" + p.ParameterName + "->data);\n"
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preamble += indent + "for(size_t i = 0; i < " + p.ParameterName + "->len; ++i) {\n"
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preamble += indent + "\t" + p.ParameterName + "_QList.push_back(QString::fromUtf8(& " + p.ParameterName + "_arr[i]->data, " + p.ParameterName + "_arr[i]->len));\n"
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preamble += indent + "}\n"
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return preamble, p.ParameterName + "_QList"
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} else {
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// The CABI has accepted two parameters - need to convert to one real QList<>
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// Create it on the stack
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preamble += indent + p.ParameterType + " " + p.ParameterName + "_QList;\n"
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preamble += indent + p.ParameterName + "_QList.reserve(" + p.ParameterName + "->len);\n"
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preamble += indent + listType.RenderTypeCabi() + "* " + p.ParameterName + "_arr = static_cast<" + listType.RenderTypeCabi() + "*>(" + p.ParameterName + "->data);\n"
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preamble += indent + "for(size_t i = 0; i < " + p.ParameterName + "->len; ++i) {\n"
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if listType.QtClassType() && !listType.Pointer {
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preamble += indent + "\t" + p.ParameterName + "_QList.push_back(*(" + p.ParameterName + "_arr[i]));\n"
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} else if listType.IsFlagType() {
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preamble += indent + "\t" + p.ParameterName + "_QList.push_back(static_cast<" + listType.RenderTypeQtCpp() + ">(" + p.ParameterName + "_arr[i]));\n"
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} else {
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preamble += indent + "\t" + p.ParameterName + "_QList.push_back(" + p.ParameterName + "_arr[i]);\n"
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}
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preamble += indent + "}\n"
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return preamble, p.ParameterName + "_QList"
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}
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} else if p.IntType() {
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// Use the raw ParameterType to select an explicit integer overload
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// Don't use RenderTypeCabi() since it canonicalizes some int types for CABI
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castSrc := p.ParameterName
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castType := p.RenderTypeQtCpp()
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if p.ByRef { // e.g. QDataStream::operator>>() overloads
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castSrc = "*" + castSrc
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}
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if p.ParameterType == "qint64" ||
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p.ParameterType == "quint64" ||
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p.ParameterType == "qlonglong" ||
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p.ParameterType == "qulonglong" ||
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p.ParameterType == "qint8" {
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// QDataStream::operator>>() by reference (qint64)
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// QLockFile::getLockInfo() by pointer
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// QTextStream::operator>>() by reference (qlonglong + qulonglong)
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// QDataStream::operator>>() qint8
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// CABI has these as int64_t* (long int) which fails a static_cast to qint64& (long long int&)
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// Hack a hard C-style cast
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return preamble, "(" + castType + ")(" + castSrc + ")"
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} else {
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// Use static_cast<> safely
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return preamble, "static_cast<" + castType + ">(" + castSrc + ")"
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}
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} else if p.ByRef {
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if p.Pointer {
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// By ref and by pointer
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// This happens for QDataStream &QDataStream::operator>>(char *&s)
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// We are only using one level of indirection
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return preamble, p.ParameterName
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} else {
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// By ref and not by pointer
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// We changed RenderTypeCabi() to render this as a pointer
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// Need to dereference so we can pass as reference to the actual Qt C++ function
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//tmp = append(tmp, "*"+p.ParameterName)
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return preamble, "*" + p.ParameterName
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}
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} else if p.QtClassType() && !p.Pointer {
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// CABI takes all Qt types by pointer, even if C++ wants them by value
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// Dereference the passed-in pointer
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return preamble, "*" + p.ParameterName
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} else {
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return preamble, p.ParameterName
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}
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}
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// emitAssignCppToCabi transforms and assigns rvalue to the assignExpression.
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// Sample assignExpression: `return `, `auto foo = `
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// Sample rvalue: `foo`, `foo(xyz)`
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@ -364,7 +361,7 @@ func emitAssignCppToCabi(assignExpression string, p CppParameter, rvalue string)
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shouldReturn = p.RenderTypeQtCpp() + " " + namePrefix + "_ret = "
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afterCall += indent + "// Convert QList<> from C++ memory to manually-managed C memory of copy-constructed pointers\n"
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afterCall += indent + "" + t.RenderTypeCabi() + "** " + namePrefix + "_arr = static_cast<" + t.RenderTypeCabi() + "**>(malloc(sizeof(" + t.RenderTypeCabi() + "**) * " + namePrefix + "_ret.length()));\n"
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afterCall += indent + "" + t.RenderTypeCabi() + "* " + namePrefix + "_arr = static_cast<" + t.RenderTypeCabi() + "*>(malloc(sizeof(" + t.RenderTypeCabi() + "*) * " + namePrefix + "_ret.length()));\n"
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afterCall += indent + "for (size_t i = 0, e = " + namePrefix + "_ret.length(); i < e; ++i) {\n"
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afterCall += indent + "\t" + namePrefix + "_arr[i] = new " + t.ParameterType + "(" + namePrefix + "_ret[i]);\n"
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afterCall += indent + "}\n"
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@ -398,7 +395,7 @@ func emitAssignCppToCabi(assignExpression string, p CppParameter, rvalue string)
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afterCall += indent + "" + assignExpression + "static_cast<" + p.ParameterType + "*>(new " + p.ParameterType + "(" + namePrefix + "_ret));\n"
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} else if p.Const {
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shouldReturn += "(" + emitReturnTypeCabi(p) + ") "
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shouldReturn += "(" + p.RenderTypeCabi() + ") "
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} else if p.IsFlagType() {
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// Needs an explicit int cast
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@ -563,10 +560,10 @@ extern "C" {
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}
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for _, m := range c.Methods {
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ret.WriteString(fmt.Sprintf("%s %s_%s(%s);\n", emitReturnTypeCabi(m.ReturnType), cClassName, m.SafeMethodName(), emitParametersCabi(m, ifv(m.IsConst, "const ", "")+cClassName+"*")))
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ret.WriteString(fmt.Sprintf("%s %s_%s(%s);\n", m.ReturnType.RenderTypeCabi(), cClassName, m.SafeMethodName(), emitParametersCabi(m, ifv(m.IsConst, "const ", "")+cClassName+"*")))
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if m.IsSignal {
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ret.WriteString(fmt.Sprintf("%s %s_connect_%s(%s* self, void* slot);\n", emitReturnTypeCabi(m.ReturnType), cClassName, m.SafeMethodName(), cClassName))
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ret.WriteString(fmt.Sprintf("%s %s_connect_%s(%s* self, void* slot);\n", m.ReturnType.RenderTypeCabi(), cClassName, m.SafeMethodName(), cClassName))
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}
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}
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@ -621,7 +618,7 @@ func emitBindingCpp(src *CppParsedHeader, filename string) (string, error) {
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for i, ctor := range c.Ctors {
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preamble, forwarding := emitParametersCABI2CppForwarding(ctor.Parameters)
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preamble, forwarding := emitParametersCABI2CppForwarding(ctor.Parameters, "\t")
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if ctor.LinuxOnly {
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@ -659,7 +656,7 @@ func emitBindingCpp(src *CppParsedHeader, filename string) (string, error) {
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for _, m := range c.Methods {
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// Need to take an extra 'self' parameter
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preamble, forwarding := emitParametersCABI2CppForwarding(m.Parameters)
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preamble, forwarding := emitParametersCABI2CppForwarding(m.Parameters, "\t")
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// callTarget is an rvalue representing the full C++ function call.
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callTarget := "self->"
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@ -681,10 +678,10 @@ func emitBindingCpp(src *CppParsedHeader, filename string) (string, error) {
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"#endif\n"+
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"}\n"+
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"\n",
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emitReturnTypeCabi(m.ReturnType), cClassName, m.SafeMethodName(), emitParametersCabi(m, ifv(m.IsConst, "const ", "")+cClassName+"*"),
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m.ReturnType.RenderTypeCabi(), cClassName, m.SafeMethodName(), emitParametersCabi(m, ifv(m.IsConst, "const ", "")+cClassName+"*"),
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preamble,
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emitAssignCppToCabi("\treturn ", m.ReturnType, callTarget),
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emitReturnTypeCabi(m.ReturnType),
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m.ReturnType.RenderTypeCabi(),
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))
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} else {
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@ -695,7 +692,7 @@ func emitBindingCpp(src *CppParsedHeader, filename string) (string, error) {
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"%s"+
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"}\n"+
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"\n",
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emitReturnTypeCabi(m.ReturnType), cClassName, m.SafeMethodName(), emitParametersCabi(m, ifv(m.IsConst, "const ", "")+cClassName+"*"),
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m.ReturnType.RenderTypeCabi(), cClassName, m.SafeMethodName(), emitParametersCabi(m, ifv(m.IsConst, "const ", "")+cClassName+"*"),
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preamble,
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emitAssignCppToCabi("\treturn ", m.ReturnType, callTarget),
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))
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@ -716,9 +713,9 @@ func emitBindingCpp(src *CppParsedHeader, filename string) (string, error) {
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var signalCode string
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for i, p := range m.Parameters {
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signalCode += emitAssignCppToCabi(fmt.Sprintf("\t\t%s sigval%d = ", emitReturnTypeCabi(p), i+1), p, p.ParameterName)
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signalCode += emitAssignCppToCabi(fmt.Sprintf("\t\t%s sigval%d = ", p.RenderTypeCabi(), i+1), p, p.ParameterName)
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paramArgs = append(paramArgs, fmt.Sprintf("sigval%d", i+1))
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paramArgDefs = append(paramArgDefs, emitReturnTypeCabi(p)+" "+p.ParameterName)
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paramArgDefs = append(paramArgDefs, p.RenderTypeCabi()+" "+p.ParameterName)
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}
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signalCode += "\t\t" + bindingFunc + "(" + strings.Join(paramArgs, `, `) + ");\n"
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