diff options
Diffstat (limited to 'Source')
| -rw-r--r-- | Source/cmListCommand.cxx | 138 | ||||
| -rw-r--r-- | Source/cmListCommand.h | 3 |
2 files changed, 137 insertions, 4 deletions
diff --git a/Source/cmListCommand.cxx b/Source/cmListCommand.cxx index 297babf..fdbd5ba 100644 --- a/Source/cmListCommand.cxx +++ b/Source/cmListCommand.cxx @@ -42,6 +42,15 @@ bool cmListCommand::InitialPass(std::vector<std::string> const& args, if (subCommand == "APPEND") { return this->HandleAppendCommand(args); } + if (subCommand == "PREPEND") { + return this->HandlePrependCommand(args); + } + if (subCommand == "POP_BACK") { + return this->HandlePopBackCommand(args); + } + if (subCommand == "POP_FRONT") { + return this->HandlePopFrontCommand(args); + } if (subCommand == "FIND") { return this->HandleFindCommand(args); } @@ -222,20 +231,141 @@ bool cmListCommand::HandleAppendCommand(std::vector<std::string> const& args) return true; } - const std::string& listName = args[1]; + std::string const& listName = args[1]; // expand the variable std::string listString; this->GetListString(listString, listName); - if (!listString.empty() && !args.empty()) { - listString += ";"; + // If `listString` or `args` is empty, no need to append `;`, + // then index is going to be `1` and points to the end-of-string ";" + auto const offset = + std::string::size_type(listString.empty() || args.empty()); + listString += &";"[offset] + cmJoin(cmMakeRange(args).advance(2), ";"); + + this->Makefile->AddDefinition(listName, listString.c_str()); + return true; +} + +bool cmListCommand::HandlePrependCommand(std::vector<std::string> const& args) +{ + assert(args.size() >= 2); + + // Skip if nothing to prepend. + if (args.size() < 3) { + return true; } - listString += cmJoin(cmMakeRange(args).advance(2), ";"); + + std::string const& listName = args[1]; + // expand the variable + std::string listString; + this->GetListString(listString, listName); + + // If `listString` or `args` is empty, no need to append `;`, + // then `offset` is going to be `1` and points to the end-of-string ";" + auto const offset = + std::string::size_type(listString.empty() || args.empty()); + listString.insert(0, + cmJoin(cmMakeRange(args).advance(2), ";") + &";"[offset]); this->Makefile->AddDefinition(listName, listString.c_str()); return true; } +bool cmListCommand::HandlePopBackCommand(std::vector<std::string> const& args) +{ + assert(args.size() >= 2); + + auto ai = args.cbegin(); + ++ai; // Skip subcommand name + std::string const& listName = *ai++; + std::vector<std::string> varArgsExpanded; + if (!this->GetList(varArgsExpanded, listName)) { + // Can't get the list definition... undefine any vars given after. + for (; ai != args.cend(); ++ai) { + this->Makefile->RemoveDefinition(*ai); + } + return true; + } + + if (!varArgsExpanded.empty()) { + if (ai == args.cend()) { + // No variables are given... Just remove one element. + varArgsExpanded.pop_back(); + } else { + // Ok, assign elements to be removed to the given variables + for (; !varArgsExpanded.empty() && ai != args.cend(); ++ai) { + assert(!ai->empty()); + this->Makefile->AddDefinition(*ai, varArgsExpanded.back().c_str()); + varArgsExpanded.pop_back(); + } + // Undefine the rest variables if the list gets empty earlier... + for (; ai != args.cend(); ++ai) { + this->Makefile->RemoveDefinition(*ai); + } + } + + this->Makefile->AddDefinition(listName, + cmJoin(varArgsExpanded, ";").c_str()); + + } else if (ai != + args.cend()) { // The list is empty, but some args were given + // Need to *undefine* 'em all, cuz there are no items to assign... + for (; ai != args.cend(); ++ai) { + this->Makefile->RemoveDefinition(*ai); + } + } + + return true; +} + +bool cmListCommand::HandlePopFrontCommand(std::vector<std::string> const& args) +{ + assert(args.size() >= 2); + + auto ai = args.cbegin(); + ++ai; // Skip subcommand name + std::string const& listName = *ai++; + std::vector<std::string> varArgsExpanded; + if (!this->GetList(varArgsExpanded, listName)) { + // Can't get the list definition... undefine any vars given after. + for (; ai != args.cend(); ++ai) { + this->Makefile->RemoveDefinition(*ai); + } + return true; + } + + if (!varArgsExpanded.empty()) { + if (ai == args.cend()) { + // No variables are given... Just remove one element. + varArgsExpanded.erase(varArgsExpanded.begin()); + } else { + // Ok, assign elements to be removed to the given variables + auto vi = varArgsExpanded.begin(); + for (; vi != varArgsExpanded.end() && ai != args.cend(); ++ai, ++vi) { + assert(!ai->empty()); + this->Makefile->AddDefinition(*ai, varArgsExpanded.front().c_str()); + } + varArgsExpanded.erase(varArgsExpanded.begin(), vi); + // Undefine the rest variables if the list gets empty earlier... + for (; ai != args.cend(); ++ai) { + this->Makefile->RemoveDefinition(*ai); + } + } + + this->Makefile->AddDefinition(listName, + cmJoin(varArgsExpanded, ";").c_str()); + + } else if (ai != + args.cend()) { // The list is empty, but some args were given + // Need to *undefine* 'em all, cuz there are no items to assign... + for (; ai != args.cend(); ++ai) { + this->Makefile->RemoveDefinition(*ai); + } + } + + return true; +} + bool cmListCommand::HandleFindCommand(std::vector<std::string> const& args) { if (args.size() != 4) { diff --git a/Source/cmListCommand.h b/Source/cmListCommand.h index 76a9856..ea3d643 100644 --- a/Source/cmListCommand.h +++ b/Source/cmListCommand.h @@ -35,6 +35,9 @@ protected: bool HandleLengthCommand(std::vector<std::string> const& args); bool HandleGetCommand(std::vector<std::string> const& args); bool HandleAppendCommand(std::vector<std::string> const& args); + bool HandlePrependCommand(std::vector<std::string> const& args); + bool HandlePopBackCommand(std::vector<std::string> const& args); + bool HandlePopFrontCommand(std::vector<std::string> const& args); bool HandleFindCommand(std::vector<std::string> const& args); bool HandleInsertCommand(std::vector<std::string> const& args); bool HandleJoinCommand(std::vector<std::string> const& args); |