mirror of https://github.com/procxx/kepka.git
Add .visit(many, callbacks) method to MTP types.
This commit is contained in:
John Preston
parent
6776d88688
commit
5a9d1a3fce
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@ -84,6 +84,7 @@ factories = '';
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flagOperators = '';
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methods = '';
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inlineMethods = '';
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visitorMethods = '';
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textSerializeInit = '';
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textSerializeMethods = '';
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forwards = '';
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@ -577,6 +578,7 @@ for restype in typesList:
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switchLines = '';
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friendDecl = '';
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getters = '';
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visitor = '';
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reader = '';
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writer = '';
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sizeList = [];
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@ -594,9 +596,14 @@ for restype in typesList:
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trivialConditions = data[7];
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dataText = '';
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dataText += '\nclass MTPD' + name + ' : public MTP::internal::TypeData {\n'; # data class
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if (len(prms) > len(trivialConditions)):
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withData = 1;
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dataText += '\nclass MTPD' + name + ' : public MTP::internal::TypeData {\n'; # data class
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else:
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dataText += '\nclass MTPD' + name + ' {\n'; # empty data class for visitors
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dataText += 'public:\n';
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dataText += '\ttemplate <typename Other>\n';
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dataText += '\tstatic constexpr bool Is() { return std::is_same_v<std::decay_t<Other>, MTPD' + name + '>; };\n\n';
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sizeList = [];
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creatorParams = [];
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creatorParamsList = [];
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@ -626,13 +633,15 @@ for restype in typesList:
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dataText += '\tbool has_' + paramName + '() const { return v' + hasFlags + '.v & Flag::f_' + paramName + '; }\n';
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dataText += '\n';
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dataText += '\tMTPD' + name + '() = default;\n'; # default constructor
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switchLines += '\t\tcase mtpc_' + name + ': '; # for by-type-id type constructor
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if (len(prms) > len(trivialConditions)):
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switchLines += 'setData(new MTPD' + name + '()); ';
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withData = 1;
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switchLines += '\tcase mtpc_' + name + ': '; # for by-type-id type constructor
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getters += '\tconst MTPD' + name + ' &c_' + name + '() const;\n'; # const getter
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visitor += '\tcase mtpc_' + name + ': return VisitData(c_' + name + '(), std::forward<Callback>(callback), std::forward<Callbacks>(callbacks)...);\n';
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forwards += 'class MTPD' + name + ';\n'; # data class forward declaration
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if (len(prms) > len(trivialConditions)):
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dataText += '\tMTPD' + name + '() = default;\n'; # default constructor
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switchLines += 'setData(new MTPD' + name + '()); ';
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getters += '\tconst MTPD' + name + ' &c_' + name + '() const;\n'; # const getter
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constructsBodies += 'const MTPD' + name + ' &MTP' + restype + '::c_' + name + '() const {\n';
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if (withType):
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constructsBodies += '\tExpects(_type == mtpc_' + name + ');\n\n';
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@ -662,8 +671,8 @@ for restype in typesList:
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creatorParamsList.append('_' + paramName);
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prmsInit.append('v' + paramName + '(_' + paramName + ')');
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if (withType):
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readText += '\t\t';
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writeText += '\t\t';
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readText += '\t';
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writeText += '\t';
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if (paramName in conditions):
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readText += '\tif (v->has_' + paramName + '()) { v->v' + paramName + '.read(from, end); } else { v->v' + paramName + ' = MTP' + paramType + '(); }\n';
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writeText += '\tif (v.has_' + paramName + '()) v.v' + paramName + '.write(to);\n';
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@ -673,8 +682,6 @@ for restype in typesList:
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writeText += '\tv.v' + paramName + '.write(to);\n';
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sizeList.append('v.v' + paramName + '.innerLength()');
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forwards += 'class MTPD' + name + ';\n'; # data class forward declaration
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dataText += ', '.join(prmsStr) + ');\n';
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constructsBodies += 'MTPD' + name + '::MTPD' + name + '(' + ', '.join(prmsStr) + ') : ' + ', '.join(prmsInit) + ' {\n}\n';
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@ -685,20 +692,26 @@ for restype in typesList:
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continue;
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paramType = prms[paramName];
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dataText += '\tMTP' + paramType + ' v' + paramName + ';\n';
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sizeCases += '\t\tcase mtpc_' + name + ': {\n';
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sizeCases += '\t\t\tconst MTPD' + name + ' &v(c_' + name + '());\n';
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sizeCases += '\t\t\treturn ' + ' + '.join(sizeList) + ';\n';
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sizeCases += '\t\t}\n';
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sizeCases += '\tcase mtpc_' + name + ': {\n';
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sizeCases += '\t\tconst MTPD' + name + ' &v(c_' + name + '());\n';
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sizeCases += '\t\treturn ' + ' + '.join(sizeList) + ';\n';
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sizeCases += '\t}\n';
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sizeFast = '\tconst MTPD' + name + ' &v(c_' + name + '());\n\treturn ' + ' + '.join(sizeList) + ';\n';
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newFast = 'new MTPD' + name + '()';
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else:
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constructsBodies += 'const MTPD' + name + ' &MTP' + restype + '::c_' + name + '() const {\n';
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if (withType):
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constructsBodies += '\tExpects(_type == mtpc_' + name + ');\n\n';
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constructsBodies += '\tstatic const MTPD' + name + ' result;\n';
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constructsBodies += '\treturn result;\n';
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constructsBodies += '}\n';
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sizeFast = '\treturn 0;\n';
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switchLines += 'break;\n';
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dataText += '};\n'; # class ending
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if (len(prms) > len(trivialConditions)):
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dataTexts += dataText; # add data class
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dataTexts += dataText; # add data class
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if (not friendDecl):
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friendDecl += '\tfriend class MTP::internal::TypeCreator;\n';
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@ -717,18 +730,18 @@ for restype in typesList:
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creatorsBodies += '}\n';
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if (withType):
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reader += '\t\tcase mtpc_' + name + ': _type = cons; '; # read switch line
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reader += '\tcase mtpc_' + name + ': _type = cons; '; # read switch line
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if (len(prms) > len(trivialConditions)):
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reader += '{\n';
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reader += '\t\t\tauto v = new MTPD' + name + '();\n';
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reader += '\t\t\tsetData(v);\n';
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reader += '\t\tauto v = new MTPD' + name + '();\n';
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reader += '\t\tsetData(v);\n';
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reader += readText;
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reader += '\t\t} break;\n';
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reader += '\t} break;\n';
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writer += '\t\tcase mtpc_' + name + ': {\n'; # write switch line
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writer += '\t\t\tauto &v = c_' + name + '();\n';
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writer += '\tcase mtpc_' + name + ': {\n'; # write switch line
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writer += '\t\tauto &v = c_' + name + '();\n';
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writer += writeText;
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writer += '\t\t} break;\n';
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writer += '\t} break;\n';
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else:
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reader += 'break;\n';
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else:
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@ -737,7 +750,7 @@ for restype in typesList:
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reader += '\tsetData(v);\n';
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reader += readText;
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writer += '\tauto &v = c_' + name + '();\n';
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writer += '\tconst auto &v = c_' + name + '();\n';
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writer += writeText;
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forwards += '\n';
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@ -756,6 +769,17 @@ for restype in typesList:
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if (withData):
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typesText += getters;
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if (withType):
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typesText += '\n';
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typesText += '\ttemplate <typename Callback, typename ...Callbacks>\n';
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typesText += '\tdecltype(auto) visit(Callback &&callback, Callbacks &&...callbacks) const;\n';
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visitorMethods += 'template <typename Callback, typename ...Callbacks>\n';
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visitorMethods += 'decltype(auto) MTP' + restype + '::visit(Callback &&callback, Callbacks &&...callbacks) const {\n';
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visitorMethods += '\tswitch (_type) {\n';
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visitorMethods += visitor;
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visitorMethods += '\t}\n';
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visitorMethods += '\tUnexpected("Type in MTP' + restype + '::visit.");\n';
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visitorMethods += '}\n\n';
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typesText += '\n\tuint32 innerLength() const;\n'; # size method
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methods += '\nuint32 MTP' + restype + '::innerLength() const {\n';
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@ -788,7 +812,7 @@ for restype in typesList:
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if (withType):
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methods += '\tswitch (cons) {\n'
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methods += reader;
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methods += '\t\tdefault: throw mtpErrorUnexpected(cons, "MTP' + restype + '");\n';
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methods += '\tdefault: throw mtpErrorUnexpected(cons, "MTP' + restype + '");\n';
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methods += '\t}\n';
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else:
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methods += reader;
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@ -814,7 +838,7 @@ for restype in typesList:
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methods += ' {\n';
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methods += '\tswitch (type) {\n'; # type id check
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methods += switchLines;
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methods += '\t\tdefault: throw mtpErrorBadTypeId(type, "MTP' + restype + '");\n\t}\n';
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methods += '\tdefault: throw mtpErrorBadTypeId(type, "MTP' + restype + '");\n\t}\n';
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methods += '}\n'; # by-type-id constructor end
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if (withData):
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@ -953,6 +977,8 @@ enum {\n\
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' + funcsText + '\n\
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// Template methods definition\n\
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' + inlineMethods + '\n\
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// Visitor definition\n\
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' + visitorMethods + '\n\
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// Flag operators definition\n\
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' + flagOperators + '\n\
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// Factory methods declaration\n\
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@ -11,6 +11,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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#include <QtCore/QVector>
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#include <QtCore/QString>
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#include <QtCore/QByteArray>
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#include <rpl/details/callable.h>
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#include "core/basic_types.h"
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#include "base/flags.h"
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#include "base/bytes.h"
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@ -229,6 +230,18 @@ protected:
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return static_cast<const DataType &>(*_data);
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}
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template <typename Data, typename Callback, typename ...Callbacks>
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static decltype(auto) VisitData(
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const Data &data,
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Callback &&callback,
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Callbacks &&...callbacks) {
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if constexpr (rpl::details::is_callable_plain_v<Callback, Data>) {
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return std::forward<Callback>(callback)(data);
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} else {
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return VisitData(data, std::forward<Callbacks>(callbacks)...);
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}
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}
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private:
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void incrementCounter() {
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if (_data) {
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