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[shared] Make a parent class to Function: ExpressionModel (factorize

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code for furtur model Equation)
This commit is contained in:
Émilie Feral
2018-05-23 10:50:34 +02:00
parent e160282e06
commit b266c4cbd1
5 changed files with 127 additions and 96 deletions
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79
apps/shared/function.cpp
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@@ -8,89 +8,29 @@ using namespace Poincare;
namespace Shared {
Function::Function(const char * name, KDColor color) :
m_expression(nullptr),
m_text{0},
ExpressionModel(),
m_name(name),
m_color(color),
m_layout(nullptr),
m_active(true)
{
}
Function& Function::operator=(const Function& other) {
// Self-assignment is benign
m_color = other.m_color;
m_name = other.m_name;
m_active = other.m_active;
setContent(other.m_text);
return *this;
}
uint32_t Function::checksum() {
char data[k_dataLengthInBytes/sizeof(char)] = {};
strlcpy(data, m_text, TextField::maxBufferSize());
strlcpy(data, text(), TextField::maxBufferSize());
data[k_dataLengthInBytes-2] = m_name != nullptr ? m_name[0] : 0;
data[k_dataLengthInBytes-1] = m_active ? 1 : 0;
return Ion::crc32((uint32_t *)data, k_dataLengthInBytes/sizeof(uint32_t));
}
void Function::setContent(const char * c) {
strlcpy(m_text, c, sizeof(m_text));
if (m_layout != nullptr) {
delete m_layout;
m_layout = nullptr;
}
if (m_expression != nullptr) {
delete m_expression;
m_expression = nullptr;
}
}
void Function::setColor(KDColor color) {
m_color = color;
}
Function::~Function() {
if (m_layout != nullptr) {
delete m_layout;
m_layout = nullptr;
}
if (m_expression != nullptr) {
delete m_expression;
m_expression = nullptr;
}
}
const char * Function::text() const {
return m_text;
}
const char * Function::name() const {
return m_name;
}
Poincare::Expression * Function::expression(Poincare::Context * context) const {
if (m_expression == nullptr) {
m_expression = Expression::ParseAndSimplify(m_text, *context);
}
return m_expression;
}
Poincare::ExpressionLayout * Function::layout() {
if (m_layout == nullptr) {
Expression * nonSimplifiedExpression = Expression::parse(m_text);
if (nonSimplifiedExpression != nullptr) {
m_layout = nonSimplifiedExpression->createLayout(PrintFloat::Mode::Decimal);
delete nonSimplifiedExpression;
}
}
return m_layout;
}
bool Function::isDefined() {
return m_text[0] != 0;
}
bool Function::isActive() {
return m_active;
}
@@ -99,10 +39,6 @@ void Function::setActive(bool active) {
m_active = active;
}
bool Function::isEmpty() {
return m_text[0] == 0;
}
template<typename T>
T Function::templatedApproximateAtAbscissa(T x, Poincare::Context * context) const {
Poincare::VariableContext<T> variableContext = Poincare::VariableContext<T>(symbol(), context);
@@ -112,17 +48,6 @@ T Function::templatedApproximateAtAbscissa(T x, Poincare::Context * context) con
return expression(context)->approximateToScalar<T>(variableContext);
}
void Function::tidy() {
if (m_layout != nullptr) {
delete m_layout;
m_layout = nullptr;
}
if (m_expression != nullptr) {
delete m_expression;
m_expression = nullptr;
}
}
}
template float Shared::Function::templatedApproximateAtAbscissa<float>(float, Poincare::Context*) const;