6663b6c9
 adorian
projet complet av...
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#include <poincare/opposite.h>
#include "layout/char_layout.h"
#include "layout/horizontal_layout.h"
#include <cmath>
#include <poincare/layout_engine.h>
#include <poincare/multiplication.h>
#include <poincare/rational.h>
#include <poincare/simplification_engine.h>
extern "C" {
#include <assert.h>
#include <stdlib.h>
}
namespace Poincare {
Expression::Type Opposite::type() const {
return Type::Opposite;
}
Expression * Opposite::clone() const {
Opposite * o = new Opposite(m_operands, true);
return o;
}
int Opposite::polynomialDegree(char symbolName) const {
return operand(0)->polynomialDegree(symbolName);
}
Expression::Sign Opposite::sign() const {
if (operand(0)->sign() == Sign::Positive) {
return Sign::Negative;
}
if (operand(0)->sign() == Sign::Negative) {
return Sign::Positive;
}
return Sign::Unknown;
}
/* Layout */
bool Opposite::needParenthesisWithParent(const Expression * e) const {
Type types[] = {Type::Addition, Type::Subtraction, Type::Opposite, Type::Multiplication, Type::Division, Type::Power, Type::Factorial};
return e->isOfType(types, 7);
}
template<typename T>
std::complex<T> Opposite::compute(const std::complex<T> c, AngleUnit angleUnit) {
return -c;
}
Expression * Opposite::shallowReduce(Context& context, AngleUnit angleUnit) {
Expression * e = Expression::shallowReduce(context, angleUnit);
if (e != this) {
return e;
}
const Expression * op = operand(0);
#if MATRIX_EXACT_REDUCING
if (op->type() == Type::Matrix) {
return SimplificationEngine::map(this, context, angleUnit);
}
#endif
detachOperand(op);
Multiplication * m = new Multiplication(new Rational(-1), op, false);
replaceWith(m, true);
return m->shallowReduce(context, angleUnit);
}
ExpressionLayout * Opposite::createLayout(PrintFloat::Mode floatDisplayMode, int numberOfSignificantDigits) const {
HorizontalLayout * result = new HorizontalLayout(new CharLayout('-'), false);
if (operand(0)->type() == Type::Opposite) {
result->addOrMergeChildAtIndex(LayoutEngine::createParenthesedLayout(operand(0)->createLayout(floatDisplayMode, numberOfSignificantDigits), false), 1, false);
} else {
result->addOrMergeChildAtIndex(operand(0)->createLayout(floatDisplayMode, numberOfSignificantDigits), 1, false);
}
return result;
}
int Opposite::writeTextInBuffer(char * buffer, int bufferSize, PrintFloat::Mode floatDisplayMode, int numberOfSignificantDigits) const {
if (bufferSize == 0) {
return -1;
}
buffer[bufferSize-1] = 0;
int numberOfChar = 0;
if (bufferSize == 1) { return 0; }
buffer[numberOfChar++] = '-';
numberOfChar += operand(0)->writeTextInBuffer(buffer+numberOfChar, bufferSize-numberOfChar, floatDisplayMode, numberOfSignificantDigits);
buffer[numberOfChar] = 0;
return numberOfChar;
}
}
template std::complex<float> Poincare::Opposite::compute<float>(const std::complex<float>, AngleUnit angleUnit);
template std::complex<double> Poincare::Opposite::compute<double>(const std::complex<double>, AngleUnit angleUnit);
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