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#include "stdafx.h"
#include "InfoIndent.h"
#include "Core/StrBuf.h"
#include "Core/Str.h"
namespace storm {
namespace syntax {
/**
* IndentType.
*/
Str *indentSymbol(EnginePtr e, IndentType i) {
const wchar *symbol = S("<unknown>");
switch (i) {
case indentNone:
symbol = S("none");
break;
case indentIncrease:
symbol = S("+");
break;
case indentDecrease:
symbol = S("-");
break;
case indentWeakIncrease:
symbol = S("?");
break;
case indentAlignBegin:
symbol = S("@");
break;
case indentAlignEnd:
symbol = S("$");
break;
}
return new (e.v) Str(symbol);
}
/**
* InfoIndent.
*/
InfoIndent::InfoIndent(Nat start, Nat end, IndentType type) : start(start), end(end), type(type) {}
Bool InfoIndent::contains(Nat i) const {
return i >= start && i < end;
}
void InfoIndent::toS(StrBuf *to) const {
*to << L"[" << start << L"-" << end << L"]" << indentSymbol(to->engine(), type);
}
/**
* TextIndent.
*/
TextIndent::TextIndent() : value(0) {}
Bool TextIndent::isAlign() const {
return (value & relativeMask) != 0;
}
Int TextIndent::level() const {
if (!isAlign()) {
// Sign-extend to the last bit.
Nat r = value & dataMask;
if (value & signMask)
return r | relativeMask | indentMask;
else
return r;
} else {
return 0;
}
}
void TextIndent::level(Int v) {
value = (Nat(v) & dataMask) | indentMask;
}
Nat TextIndent::alignAs() const {
if (isAlign())
return value & dataMask;
else
return 0;
}
void TextIndent::alignAs(Nat offset) {
value = offset | relativeMask | (value & indentMask);
}
Bool TextIndent::seenIndent() const {
return (value & indentMask) != 0;
}
void TextIndent::applyParent(InfoIndent *info, Nat current, Nat offsetBegin, Nat offsetEnd) {
Bool inside = info->contains(current);
switch (info->type) {
case indentIncrease:
if (!isAlign())
level(level() + inside);
break;
case indentDecrease:
if (!isAlign())
level(level() - inside);
break;
case indentWeakIncrease:
if (!isAlign() && !seenIndent() && inside) {
level(1);
}
break;
case indentAlignBegin:
if (isAlign()) {
// We only care about the leafmost one.
} else if (inside) {
alignAs(offsetBegin);
}
break;
case indentAlignEnd:
if (isAlign()) {
// We only care about the leafmost one.
} else if (inside) {
alignAs(offsetEnd);
}
break;
}
}
void TextIndent::offset(Nat n) {
if (isAlign())
alignAs(alignAs() + n);
}
void TextIndent::toS(StrBuf *to) const {
if (isAlign())
*to << S("align as ") << alignAs();
else
*to << S("indent ") << level() << S(" levels");
}
wostream &operator <<(wostream &to, TextIndent i) {
if (i.isAlign())
to << L"align as " << i.alignAs();
else
to << L"indent " << i.level() << L" levels";
return to;
}
TextIndent indentLevel(Int level) {
TextIndent i;
i.level(level);
return i;
}
TextIndent indentAs(Nat offset) {
TextIndent i;
i.alignAs(offset);
return i;
}
}
}
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