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CommandLine: Use variadic templates to simplify opt constructors.

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llvm-svn: 229332
This commit is contained in:
Benjamin Kramer 2015-02-15 21:11:25 +00:00
parent 1008f9bfa4
commit 1256b8262c
1 changed files with 20 additions and 295 deletions
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315
include/llvm/Support/CommandLine.h
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@ -1040,8 +1040,14 @@ template <> struct applicator<MiscFlags> {
static void opt(MiscFlags MF, Option &O) { O.setMiscFlag(MF); }
};
// apply method - Apply a modifier to an option in a type safe way.
template <class Mod, class Opt> void apply(const Mod &M, Opt *O) {
// apply method - Apply modifiers to an option in a type safe way.
template <class Opt, class Mod, class... Mods>
void apply(Opt *O, const Mod &M, const Mods &... Ms) {
applicator<Mod>::opt(M, *O);
apply(O, Ms...);
}
template <class Opt, class Mod> void apply(Opt *O, const Mod &M) {
applicator<Mod>::opt(M, *O);
}
@ -1209,95 +1215,10 @@ public:
return this->getValue();
}
// One option...
template <class M0t>
explicit opt(const M0t &M0)
template <class... Mods>
explicit opt(const Mods &... Ms)
: Option(Optional, NotHidden), Parser(*this) {
apply(M0, this);
done();
}
// Two options...
template <class M0t, class M1t>
opt(const M0t &M0, const M1t &M1)
: Option(Optional, NotHidden), Parser(*this) {
apply(M0, this);
apply(M1, this);
done();
}
// Three options...
template <class M0t, class M1t, class M2t>
opt(const M0t &M0, const M1t &M1, const M2t &M2)
: Option(Optional, NotHidden), Parser(*this) {
apply(M0, this);
apply(M1, this);
apply(M2, this);
done();
}
// Four options...
template <class M0t, class M1t, class M2t, class M3t>
opt(const M0t &M0, const M1t &M1, const M2t &M2, const M3t &M3)
: Option(Optional, NotHidden), Parser(*this) {
apply(M0, this);
apply(M1, this);
apply(M2, this);
apply(M3, this);
done();
}
// Five options...
template <class M0t, class M1t, class M2t, class M3t, class M4t>
opt(const M0t &M0, const M1t &M1, const M2t &M2, const M3t &M3, const M4t &M4)
: Option(Optional, NotHidden), Parser(*this) {
apply(M0, this);
apply(M1, this);
apply(M2, this);
apply(M3, this);
apply(M4, this);
done();
}
// Six options...
template <class M0t, class M1t, class M2t, class M3t, class M4t, class M5t>
opt(const M0t &M0, const M1t &M1, const M2t &M2, const M3t &M3, const M4t &M4,
const M5t &M5)
: Option(Optional, NotHidden), Parser(*this) {
apply(M0, this);
apply(M1, this);
apply(M2, this);
apply(M3, this);
apply(M4, this);
apply(M5, this);
done();
}
// Seven options...
template <class M0t, class M1t, class M2t, class M3t, class M4t, class M5t,
class M6t>
opt(const M0t &M0, const M1t &M1, const M2t &M2, const M3t &M3, const M4t &M4,
const M5t &M5, const M6t &M6)
: Option(Optional, NotHidden), Parser(*this) {
apply(M0, this);
apply(M1, this);
apply(M2, this);
apply(M3, this);
apply(M4, this);
apply(M5, this);
apply(M6, this);
done();
}
// Eight options...
template <class M0t, class M1t, class M2t, class M3t, class M4t, class M5t,
class M6t, class M7t>
opt(const M0t &M0, const M1t &M1, const M2t &M2, const M3t &M3, const M4t &M4,
const M5t &M5, const M6t &M6, const M7t &M7)
: Option(Optional, NotHidden), Parser(*this) {
apply(M0, this);
apply(M1, this);
apply(M2, this);
apply(M3, this);
apply(M4, this);
apply(M5, this);
apply(M6, this);
apply(M7, this);
apply(this, Ms...);
done();
}
};
@ -1407,94 +1328,10 @@ public:
void setNumAdditionalVals(unsigned n) { Option::setNumAdditionalVals(n); }
// One option...
template <class M0t>
explicit list(const M0t &M0)
template <class... Mods>
explicit list(const Mods &... Ms)
: Option(ZeroOrMore, NotHidden), Parser(*this) {
apply(M0, this);
done();
}
// Two options...
template <class M0t, class M1t>
list(const M0t &M0, const M1t &M1)
: Option(ZeroOrMore, NotHidden), Parser(*this) {
apply(M0, this);
apply(M1, this);
done();
}
// Three options...
template <class M0t, class M1t, class M2t>
list(const M0t &M0, const M1t &M1, const M2t &M2)
: Option(ZeroOrMore, NotHidden), Parser(*this) {
apply(M0, this);
apply(M1, this);
apply(M2, this);
done();
}
// Four options...
template <class M0t, class M1t, class M2t, class M3t>
list(const M0t &M0, const M1t &M1, const M2t &M2, const M3t &M3)
: Option(ZeroOrMore, NotHidden), Parser(*this) {
apply(M0, this);
apply(M1, this);
apply(M2, this);
apply(M3, this);
done();
}
// Five options...
template <class M0t, class M1t, class M2t, class M3t, class M4t>
list(const M0t &M0, const M1t &M1, const M2t &M2, const M3t &M3,
const M4t &M4)
: Option(ZeroOrMore, NotHidden), Parser(*this) {
apply(M0, this);
apply(M1, this);
apply(M2, this);
apply(M3, this);
apply(M4, this);
done();
}
// Six options...
template <class M0t, class M1t, class M2t, class M3t, class M4t, class M5t>
list(const M0t &M0, const M1t &M1, const M2t &M2, const M3t &M3,
const M4t &M4, const M5t &M5)
: Option(ZeroOrMore, NotHidden), Parser(*this) {
apply(M0, this);
apply(M1, this);
apply(M2, this);
apply(M3, this);
apply(M4, this);
apply(M5, this);
done();
}
// Seven options...
template <class M0t, class M1t, class M2t, class M3t, class M4t, class M5t,
class M6t>
list(const M0t &M0, const M1t &M1, const M2t &M2, const M3t &M3,
const M4t &M4, const M5t &M5, const M6t &M6)
: Option(ZeroOrMore, NotHidden), Parser(*this) {
apply(M0, this);
apply(M1, this);
apply(M2, this);
apply(M3, this);
apply(M4, this);
apply(M5, this);
apply(M6, this);
done();
}
// Eight options...
template <class M0t, class M1t, class M2t, class M3t, class M4t, class M5t,
class M6t, class M7t>
list(const M0t &M0, const M1t &M1, const M2t &M2, const M3t &M3,
const M4t &M4, const M5t &M5, const M6t &M6, const M7t &M7)
: Option(ZeroOrMore, NotHidden), Parser(*this) {
apply(M0, this);
apply(M1, this);
apply(M2, this);
apply(M3, this);
apply(M4, this);
apply(M5, this);
apply(M6, this);
apply(M7, this);
apply(this, Ms...);
done();
}
};
@ -1629,94 +1466,10 @@ public:
return Positions[optnum];
}
// One option...
template <class M0t>
explicit bits(const M0t &M0)
template <class... Mods>
explicit bits(const Mods &... Ms)
: Option(ZeroOrMore, NotHidden), Parser(*this) {
apply(M0, this);
done();
}
// Two options...
template <class M0t, class M1t>
bits(const M0t &M0, const M1t &M1)
: Option(ZeroOrMore, NotHidden), Parser(*this) {
apply(M0, this);
apply(M1, this);
done();
}
// Three options...
template <class M0t, class M1t, class M2t>
bits(const M0t &M0, const M1t &M1, const M2t &M2)
: Option(ZeroOrMore, NotHidden), Parser(*this) {
apply(M0, this);
apply(M1, this);
apply(M2, this);
done();
}
// Four options...
template <class M0t, class M1t, class M2t, class M3t>
bits(const M0t &M0, const M1t &M1, const M2t &M2, const M3t &M3)
: Option(ZeroOrMore, NotHidden), Parser(*this) {
apply(M0, this);
apply(M1, this);
apply(M2, this);
apply(M3, this);
done();
}
// Five options...
template <class M0t, class M1t, class M2t, class M3t, class M4t>
bits(const M0t &M0, const M1t &M1, const M2t &M2, const M3t &M3,
const M4t &M4)
: Option(ZeroOrMore, NotHidden), Parser(*this) {
apply(M0, this);
apply(M1, this);
apply(M2, this);
apply(M3, this);
apply(M4, this);
done();
}
// Six options...
template <class M0t, class M1t, class M2t, class M3t, class M4t, class M5t>
bits(const M0t &M0, const M1t &M1, const M2t &M2, const M3t &M3,
const M4t &M4, const M5t &M5)
: Option(ZeroOrMore, NotHidden), Parser(*this) {
apply(M0, this);
apply(M1, this);
apply(M2, this);
apply(M3, this);
apply(M4, this);
apply(M5, this);
done();
}
// Seven options...
template <class M0t, class M1t, class M2t, class M3t, class M4t, class M5t,
class M6t>
bits(const M0t &M0, const M1t &M1, const M2t &M2, const M3t &M3,
const M4t &M4, const M5t &M5, const M6t &M6)
: Option(ZeroOrMore, NotHidden), Parser(*this) {
apply(M0, this);
apply(M1, this);
apply(M2, this);
apply(M3, this);
apply(M4, this);
apply(M5, this);
apply(M6, this);
done();
}
// Eight options...
template <class M0t, class M1t, class M2t, class M3t, class M4t, class M5t,
class M6t, class M7t>
bits(const M0t &M0, const M1t &M1, const M2t &M2, const M3t &M3,
const M4t &M4, const M5t &M5, const M6t &M6, const M7t &M7)
: Option(ZeroOrMore, NotHidden), Parser(*this) {
apply(M0, this);
apply(M1, this);
apply(M2, this);
apply(M3, this);
apply(M4, this);
apply(M5, this);
apply(M6, this);
apply(M7, this);
apply(this, Ms...);
done();
}
};
@ -1766,38 +1519,10 @@ public:
AliasFor = &O;
}
// One option...
template <class M0t>
explicit alias(const M0t &M0)
template <class... Mods>
explicit alias(const Mods &... Ms)
: Option(Optional, Hidden), AliasFor(nullptr) {
apply(M0, this);
done();
}
// Two options...
template <class M0t, class M1t>
alias(const M0t &M0, const M1t &M1)
: Option(Optional, Hidden), AliasFor(nullptr) {
apply(M0, this);
apply(M1, this);
done();
}
// Three options...
template <class M0t, class M1t, class M2t>
alias(const M0t &M0, const M1t &M1, const M2t &M2)
: Option(Optional, Hidden), AliasFor(nullptr) {
apply(M0, this);
apply(M1, this);
apply(M2, this);
done();
}
// Four options...
template <class M0t, class M1t, class M2t, class M3t>
alias(const M0t &M0, const M1t &M1, const M2t &M2, const M3t &M3)
: Option(Optional, Hidden), AliasFor(nullptr) {
apply(M0, this);
apply(M1, this);
apply(M2, this);
apply(M3, this);
apply(this, Ms...);
done();
}
};