mirror of
https://github.com/c64scene-ar/llvm-6502.git
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896353d663
The class has a non-trivial dtor so we have to clean up before we move in new members. Remove misleading comment as a default move assignment operator will never be synthesized for this class. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240417 91177308-0d34-0410-b5e6-96231b3b80d8
460 lines
16 KiB
C++
460 lines
16 KiB
C++
//===--- ArgList.h - Argument List Management -------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_OPTION_ARGLIST_H
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#define LLVM_OPTION_ARGLIST_H
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/ADT/Twine.h"
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#include "llvm/Option/Arg.h"
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#include "llvm/Option/OptSpecifier.h"
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#include "llvm/Option/Option.h"
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#include <list>
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#include <memory>
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#include <string>
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#include <vector>
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namespace llvm {
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namespace opt {
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class ArgList;
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class Option;
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/// arg_iterator - Iterates through arguments stored inside an ArgList.
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class arg_iterator {
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/// The current argument.
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SmallVectorImpl<Arg*>::const_iterator Current;
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/// The argument list we are iterating over.
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const ArgList &Args;
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/// Optional filters on the arguments which will be match. Most clients
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/// should never want to iterate over arguments without filters, so we won't
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/// bother to factor this into two separate iterator implementations.
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//
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// FIXME: Make efficient; the idea is to provide efficient iteration over
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// all arguments which match a particular id and then just provide an
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// iterator combinator which takes multiple iterators which can be
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// efficiently compared and returns them in order.
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OptSpecifier Id0, Id1, Id2;
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void SkipToNextArg();
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public:
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typedef Arg * const * value_type;
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typedef Arg * const & reference;
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typedef Arg * const * pointer;
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typedef std::forward_iterator_tag iterator_category;
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typedef std::ptrdiff_t difference_type;
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arg_iterator(SmallVectorImpl<Arg *>::const_iterator it, const ArgList &Args,
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OptSpecifier Id0 = 0U, OptSpecifier Id1 = 0U,
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OptSpecifier Id2 = 0U)
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: Current(it), Args(Args), Id0(Id0), Id1(Id1), Id2(Id2) {
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SkipToNextArg();
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}
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operator const Arg*() { return *Current; }
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reference operator*() const { return *Current; }
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pointer operator->() const { return Current; }
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arg_iterator &operator++() {
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++Current;
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SkipToNextArg();
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return *this;
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}
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arg_iterator operator++(int) {
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arg_iterator tmp(*this);
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++(*this);
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return tmp;
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}
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friend bool operator==(arg_iterator LHS, arg_iterator RHS) {
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return LHS.Current == RHS.Current;
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}
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friend bool operator!=(arg_iterator LHS, arg_iterator RHS) {
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return !(LHS == RHS);
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}
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};
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/// ArgList - Ordered collection of driver arguments.
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///
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/// The ArgList class manages a list of Arg instances as well as
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/// auxiliary data and convenience methods to allow Tools to quickly
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/// check for the presence of Arg instances for a particular Option
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/// and to iterate over groups of arguments.
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class ArgList {
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public:
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typedef SmallVector<Arg*, 16> arglist_type;
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typedef arglist_type::iterator iterator;
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typedef arglist_type::const_iterator const_iterator;
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typedef arglist_type::reverse_iterator reverse_iterator;
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typedef arglist_type::const_reverse_iterator const_reverse_iterator;
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private:
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/// The internal list of arguments.
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arglist_type Args;
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protected:
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// Make the default special members protected so they won't be used to slice
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// derived objects, but can still be used by derived objects to implement
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// their own special members.
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ArgList() = default;
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// Explicit move operations to ensure the container is cleared post-move
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// otherwise it could lead to a double-delete in the case of moving of an
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// InputArgList which deletes the contents of the container. If we could fix
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// up the ownership here (delegate storage/ownership to the derived class so
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// it can be a container of unique_ptr) this would be simpler.
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ArgList(ArgList &&RHS) : Args(std::move(RHS.Args)) { RHS.Args.clear(); }
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ArgList &operator=(ArgList &&RHS) {
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Args = std::move(RHS.Args);
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RHS.Args.clear();
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return *this;
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}
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// Protect the dtor to ensure this type is never destroyed polymorphically.
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~ArgList() = default;
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public:
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/// @name Arg Access
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/// @{
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/// append - Append \p A to the arg list.
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void append(Arg *A);
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arglist_type &getArgs() { return Args; }
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const arglist_type &getArgs() const { return Args; }
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unsigned size() const { return Args.size(); }
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/// @}
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/// @name Arg Iteration
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/// @{
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iterator begin() { return Args.begin(); }
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iterator end() { return Args.end(); }
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reverse_iterator rbegin() { return Args.rbegin(); }
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reverse_iterator rend() { return Args.rend(); }
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const_iterator begin() const { return Args.begin(); }
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const_iterator end() const { return Args.end(); }
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const_reverse_iterator rbegin() const { return Args.rbegin(); }
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const_reverse_iterator rend() const { return Args.rend(); }
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arg_iterator filtered_begin(OptSpecifier Id0 = 0U, OptSpecifier Id1 = 0U,
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OptSpecifier Id2 = 0U) const {
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return arg_iterator(Args.begin(), *this, Id0, Id1, Id2);
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}
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arg_iterator filtered_end() const {
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return arg_iterator(Args.end(), *this);
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}
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iterator_range<arg_iterator> filtered(OptSpecifier Id0 = 0U,
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OptSpecifier Id1 = 0U,
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OptSpecifier Id2 = 0U) const {
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return make_range(filtered_begin(Id0, Id1, Id2), filtered_end());
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}
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/// @}
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/// @name Arg Removal
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/// @{
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/// eraseArg - Remove any option matching \p Id.
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void eraseArg(OptSpecifier Id);
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/// @}
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/// @name Arg Access
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/// @{
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/// hasArg - Does the arg list contain any option matching \p Id.
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///
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/// \p Claim Whether the argument should be claimed, if it exists.
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bool hasArgNoClaim(OptSpecifier Id) const {
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return getLastArgNoClaim(Id) != nullptr;
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}
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bool hasArg(OptSpecifier Id) const {
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return getLastArg(Id) != nullptr;
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}
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bool hasArg(OptSpecifier Id0, OptSpecifier Id1) const {
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return getLastArg(Id0, Id1) != nullptr;
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}
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bool hasArg(OptSpecifier Id0, OptSpecifier Id1, OptSpecifier Id2) const {
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return getLastArg(Id0, Id1, Id2) != nullptr;
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}
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/// getLastArg - Return the last argument matching \p Id, or null.
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///
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/// \p Claim Whether the argument should be claimed, if it exists.
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Arg *getLastArgNoClaim(OptSpecifier Id) const;
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Arg *getLastArgNoClaim(OptSpecifier Id0, OptSpecifier Id1) const;
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Arg *getLastArgNoClaim(OptSpecifier Id0, OptSpecifier Id1,
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OptSpecifier Id2) const;
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Arg *getLastArgNoClaim(OptSpecifier Id0, OptSpecifier Id1, OptSpecifier Id2,
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OptSpecifier Id3) const;
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Arg *getLastArg(OptSpecifier Id) const;
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Arg *getLastArg(OptSpecifier Id0, OptSpecifier Id1) const;
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Arg *getLastArg(OptSpecifier Id0, OptSpecifier Id1, OptSpecifier Id2) const;
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Arg *getLastArg(OptSpecifier Id0, OptSpecifier Id1, OptSpecifier Id2,
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OptSpecifier Id3) const;
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Arg *getLastArg(OptSpecifier Id0, OptSpecifier Id1, OptSpecifier Id2,
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OptSpecifier Id3, OptSpecifier Id4) const;
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Arg *getLastArg(OptSpecifier Id0, OptSpecifier Id1, OptSpecifier Id2,
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OptSpecifier Id3, OptSpecifier Id4, OptSpecifier Id5) const;
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Arg *getLastArg(OptSpecifier Id0, OptSpecifier Id1, OptSpecifier Id2,
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OptSpecifier Id3, OptSpecifier Id4, OptSpecifier Id5,
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OptSpecifier Id6) const;
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Arg *getLastArg(OptSpecifier Id0, OptSpecifier Id1, OptSpecifier Id2,
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OptSpecifier Id3, OptSpecifier Id4, OptSpecifier Id5,
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OptSpecifier Id6, OptSpecifier Id7) const;
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/// getArgString - Return the input argument string at \p Index.
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virtual const char *getArgString(unsigned Index) const = 0;
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/// getNumInputArgStrings - Return the number of original argument strings,
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/// which are guaranteed to be the first strings in the argument string
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/// list.
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virtual unsigned getNumInputArgStrings() const = 0;
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/// @}
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/// @name Argument Lookup Utilities
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/// @{
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/// getLastArgValue - Return the value of the last argument, or a default.
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StringRef getLastArgValue(OptSpecifier Id,
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StringRef Default = "") const;
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/// getAllArgValues - Get the values of all instances of the given argument
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/// as strings.
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std::vector<std::string> getAllArgValues(OptSpecifier Id) const;
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/// @}
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/// @name Translation Utilities
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/// @{
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/// hasFlag - Given an option \p Pos and its negative form \p Neg, return
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/// true if the option is present, false if the negation is present, and
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/// \p Default if neither option is given. If both the option and its
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/// negation are present, the last one wins.
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bool hasFlag(OptSpecifier Pos, OptSpecifier Neg, bool Default=true) const;
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/// hasFlag - Given an option \p Pos, an alias \p PosAlias and its negative
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/// form \p Neg, return true if the option or its alias is present, false if
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/// the negation is present, and \p Default if none of the options are
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/// given. If multiple options are present, the last one wins.
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bool hasFlag(OptSpecifier Pos, OptSpecifier PosAlias, OptSpecifier Neg,
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bool Default = true) const;
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/// AddLastArg - Render only the last argument match \p Id0, if present.
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void AddLastArg(ArgStringList &Output, OptSpecifier Id0) const;
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void AddLastArg(ArgStringList &Output, OptSpecifier Id0,
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OptSpecifier Id1) const;
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/// AddAllArgs - Render all arguments matching the given ids.
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void AddAllArgs(ArgStringList &Output, OptSpecifier Id0,
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OptSpecifier Id1 = 0U, OptSpecifier Id2 = 0U) const;
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/// AddAllArgValues - Render the argument values of all arguments
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/// matching the given ids.
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void AddAllArgValues(ArgStringList &Output, OptSpecifier Id0,
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OptSpecifier Id1 = 0U, OptSpecifier Id2 = 0U) const;
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/// AddAllArgsTranslated - Render all the arguments matching the
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/// given ids, but forced to separate args and using the provided
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/// name instead of the first option value.
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///
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/// \param Joined - If true, render the argument as joined with
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/// the option specifier.
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void AddAllArgsTranslated(ArgStringList &Output, OptSpecifier Id0,
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const char *Translation,
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bool Joined = false) const;
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/// ClaimAllArgs - Claim all arguments which match the given
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/// option id.
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void ClaimAllArgs(OptSpecifier Id0) const;
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/// ClaimAllArgs - Claim all arguments.
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///
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void ClaimAllArgs() const;
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/// @}
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/// @name Arg Synthesis
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/// @{
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/// Construct a constant string pointer whose
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/// lifetime will match that of the ArgList.
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virtual const char *MakeArgStringRef(StringRef Str) const = 0;
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const char *MakeArgString(const Twine &Str) const {
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SmallString<256> Buf;
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return MakeArgStringRef(Str.toStringRef(Buf));
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}
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/// \brief Create an arg string for (\p LHS + \p RHS), reusing the
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/// string at \p Index if possible.
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const char *GetOrMakeJoinedArgString(unsigned Index, StringRef LHS,
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StringRef RHS) const;
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/// @}
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};
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class InputArgList final : public ArgList {
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private:
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/// List of argument strings used by the contained Args.
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///
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/// This is mutable since we treat the ArgList as being the list
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/// of Args, and allow routines to add new strings (to have a
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/// convenient place to store the memory) via MakeIndex.
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mutable ArgStringList ArgStrings;
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/// Strings for synthesized arguments.
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///
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/// This is mutable since we treat the ArgList as being the list
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/// of Args, and allow routines to add new strings (to have a
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/// convenient place to store the memory) via MakeIndex.
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mutable std::list<std::string> SynthesizedStrings;
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/// The number of original input argument strings.
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unsigned NumInputArgStrings;
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/// Release allocated arguments.
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void releaseMemory();
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public:
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InputArgList(const char* const *ArgBegin, const char* const *ArgEnd);
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InputArgList(InputArgList &&RHS)
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: ArgList(std::move(RHS)), ArgStrings(std::move(RHS.ArgStrings)),
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SynthesizedStrings(std::move(RHS.SynthesizedStrings)),
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NumInputArgStrings(RHS.NumInputArgStrings) {}
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InputArgList &operator=(InputArgList &&RHS) {
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releaseMemory();
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ArgList::operator=(std::move(RHS));
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ArgStrings = std::move(RHS.ArgStrings);
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SynthesizedStrings = std::move(RHS.SynthesizedStrings);
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NumInputArgStrings = RHS.NumInputArgStrings;
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return *this;
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}
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~InputArgList() { releaseMemory(); }
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const char *getArgString(unsigned Index) const override {
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return ArgStrings[Index];
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}
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unsigned getNumInputArgStrings() const override {
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return NumInputArgStrings;
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}
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/// @name Arg Synthesis
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/// @{
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public:
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/// MakeIndex - Get an index for the given string(s).
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unsigned MakeIndex(StringRef String0) const;
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unsigned MakeIndex(StringRef String0, StringRef String1) const;
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using ArgList::MakeArgString;
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const char *MakeArgStringRef(StringRef Str) const override;
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/// @}
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};
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/// DerivedArgList - An ordered collection of driver arguments,
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/// whose storage may be in another argument list.
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class DerivedArgList final : public ArgList {
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const InputArgList &BaseArgs;
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/// The list of arguments we synthesized.
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mutable SmallVector<std::unique_ptr<Arg>, 16> SynthesizedArgs;
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public:
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/// Construct a new derived arg list from \p BaseArgs.
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DerivedArgList(const InputArgList &BaseArgs);
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const char *getArgString(unsigned Index) const override {
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return BaseArgs.getArgString(Index);
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}
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unsigned getNumInputArgStrings() const override {
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return BaseArgs.getNumInputArgStrings();
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}
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const InputArgList &getBaseArgs() const {
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return BaseArgs;
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}
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/// @name Arg Synthesis
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/// @{
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/// AddSynthesizedArg - Add a argument to the list of synthesized arguments
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/// (to be freed).
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void AddSynthesizedArg(Arg *A);
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using ArgList::MakeArgString;
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const char *MakeArgStringRef(StringRef Str) const override;
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/// AddFlagArg - Construct a new FlagArg for the given option \p Id and
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/// append it to the argument list.
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void AddFlagArg(const Arg *BaseArg, const Option Opt) {
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append(MakeFlagArg(BaseArg, Opt));
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}
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/// AddPositionalArg - Construct a new Positional arg for the given option
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/// \p Id, with the provided \p Value and append it to the argument
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/// list.
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void AddPositionalArg(const Arg *BaseArg, const Option Opt,
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StringRef Value) {
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append(MakePositionalArg(BaseArg, Opt, Value));
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}
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/// AddSeparateArg - Construct a new Positional arg for the given option
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/// \p Id, with the provided \p Value and append it to the argument
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/// list.
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void AddSeparateArg(const Arg *BaseArg, const Option Opt,
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StringRef Value) {
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append(MakeSeparateArg(BaseArg, Opt, Value));
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}
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/// AddJoinedArg - Construct a new Positional arg for the given option
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/// \p Id, with the provided \p Value and append it to the argument list.
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void AddJoinedArg(const Arg *BaseArg, const Option Opt,
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StringRef Value) {
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append(MakeJoinedArg(BaseArg, Opt, Value));
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}
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/// MakeFlagArg - Construct a new FlagArg for the given option \p Id.
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Arg *MakeFlagArg(const Arg *BaseArg, const Option Opt) const;
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/// MakePositionalArg - Construct a new Positional arg for the
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/// given option \p Id, with the provided \p Value.
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Arg *MakePositionalArg(const Arg *BaseArg, const Option Opt,
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StringRef Value) const;
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/// MakeSeparateArg - Construct a new Positional arg for the
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/// given option \p Id, with the provided \p Value.
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Arg *MakeSeparateArg(const Arg *BaseArg, const Option Opt,
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StringRef Value) const;
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/// MakeJoinedArg - Construct a new Positional arg for the
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/// given option \p Id, with the provided \p Value.
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Arg *MakeJoinedArg(const Arg *BaseArg, const Option Opt,
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StringRef Value) const;
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/// @}
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};
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} // end namespace opt
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} // end namespace llvm
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#endif
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