cb063bcc30
This defines a class CSSVariableValues which is used to store computed variable values. We store them a bit differently from CSSVariableDeclarations -- here we have a hash table of variable names to integer IDs, and then an array of variables where the array index is the ID. This is because later on we'll want a stable order for the variables to return from DOM APIs. In addition to the string value of the variable, we store the type of the first and last token of the variable value. This information will be used when resolving entire variable reference containing values, to determine when to insert "/**/" before and after a resolved var(blah) token. We add a CSSVariableValues member to nsStyleVariables.
100 lines
2.4 KiB
C++
100 lines
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
/* computed CSS Variable values */
|
|
|
|
#include "CSSVariableValues.h"
|
|
|
|
namespace mozilla {
|
|
|
|
CSSVariableValues::CSSVariableValues()
|
|
{
|
|
MOZ_COUNT_CTOR(CSSVariableValues);
|
|
}
|
|
|
|
CSSVariableValues::CSSVariableValues(const CSSVariableValues& aOther)
|
|
{
|
|
MOZ_COUNT_CTOR(CSSVariableValues);
|
|
CopyVariablesFrom(aOther);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
CSSVariableValues::~CSSVariableValues()
|
|
{
|
|
MOZ_COUNT_DTOR(CSSVariableValues);
|
|
}
|
|
#endif
|
|
|
|
CSSVariableValues&
|
|
CSSVariableValues::operator=(const CSSVariableValues& aOther)
|
|
{
|
|
if (this == &aOther) {
|
|
return *this;
|
|
}
|
|
|
|
mVariableIDs.Clear();
|
|
mVariables.Clear();
|
|
CopyVariablesFrom(aOther);
|
|
return *this;
|
|
}
|
|
|
|
bool
|
|
CSSVariableValues::Get(const nsAString& aName, nsString& aValue) const
|
|
{
|
|
size_t id;
|
|
if (!mVariableIDs.Get(aName, &id)) {
|
|
return false;
|
|
}
|
|
aValue = mVariables[id].mValue;
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
CSSVariableValues::Get(const nsAString& aName,
|
|
nsString& aValue,
|
|
nsCSSTokenSerializationType& aFirstToken,
|
|
nsCSSTokenSerializationType& aLastToken) const
|
|
{
|
|
size_t id;
|
|
if (!mVariableIDs.Get(aName, &id)) {
|
|
return false;
|
|
}
|
|
aValue = mVariables[id].mValue;
|
|
aFirstToken = mVariables[id].mFirstToken;
|
|
aLastToken = mVariables[id].mLastToken;
|
|
return true;
|
|
}
|
|
|
|
void
|
|
CSSVariableValues::Put(const nsAString& aName,
|
|
nsString aValue,
|
|
nsCSSTokenSerializationType aFirstToken,
|
|
nsCSSTokenSerializationType aLastToken)
|
|
{
|
|
size_t id;
|
|
if (mVariableIDs.Get(aName, &id)) {
|
|
mVariables[id].mValue = aValue;
|
|
mVariables[id].mFirstToken = aFirstToken;
|
|
mVariables[id].mLastToken = aLastToken;
|
|
} else {
|
|
id = mVariables.Length();
|
|
mVariableIDs.Put(aName, id);
|
|
mVariables.AppendElement(Variable(aName, aValue, aFirstToken, aLastToken));
|
|
}
|
|
}
|
|
|
|
void
|
|
CSSVariableValues::CopyVariablesFrom(const CSSVariableValues& aOther)
|
|
{
|
|
for (size_t i = 0, n = aOther.mVariables.Length(); i < n; i++) {
|
|
Put(aOther.mVariables[i].mVariableName,
|
|
aOther.mVariables[i].mValue,
|
|
aOther.mVariables[i].mFirstToken,
|
|
aOther.mVariables[i].mLastToken);
|
|
}
|
|
}
|
|
|
|
} // namespace mozilla
|