chromium/third_party/pdfium/core/fpdfapi/page/cpdf_psengine.cpp

// Copyright 2017 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com

#include "core/fpdfapi/page/cpdf_psengine.h"

#include <math.h>

#include <algorithm>
#include <limits>
#include <utility>

#include "core/fpdfapi/parser/cpdf_simple_parser.h"
#include "core/fxcrt/check.h"
#include "core/fxcrt/check_op.h"
#include "core/fxcrt/fx_safe_types.h"
#include "core/fxcrt/fx_string.h"
#include "core/fxcrt/notreached.h"

namespace {

struct PDF_PSOpName { … };

constexpr PDF_PSOpName kPsOpNames[] = …;

// Round half up is a nearest integer round with half-way numbers always rounded
// up. Example: -5.5 rounds to -5.
float RoundHalfUp(float f) { … }

}  // namespace

CPDF_PSOP::CPDF_PSOP()
    : … { … }

CPDF_PSOP::CPDF_PSOP(PDF_PSOP op) : … { … }

CPDF_PSOP::CPDF_PSOP(float value) : … { … }

CPDF_PSOP::~CPDF_PSOP() = default;

bool CPDF_PSOP::Parse(CPDF_SimpleParser* parser, int depth) { … }

void CPDF_PSOP::Execute(CPDF_PSEngine* pEngine) { … }

float CPDF_PSOP::GetFloatValue() const { … }

bool CPDF_PSEngine::Execute() { … }

CPDF_PSProc::CPDF_PSProc() = default;

CPDF_PSProc::~CPDF_PSProc() = default;

bool CPDF_PSProc::Parse(CPDF_SimpleParser* parser, int depth) { … }

bool CPDF_PSProc::Execute(CPDF_PSEngine* pEngine) { … }

void CPDF_PSProc::AddOperatorForTesting(ByteStringView word) { … }

void CPDF_PSProc::AddOperator(ByteStringView word) { … }

CPDF_PSEngine::CPDF_PSEngine() = default;

CPDF_PSEngine::~CPDF_PSEngine() = default;

void CPDF_PSEngine::Push(float v) { … }

float CPDF_PSEngine::Pop() { … }

int CPDF_PSEngine::PopInt() { … }

bool CPDF_PSEngine::Parse(pdfium::span<const uint8_t> input) { … }

bool CPDF_PSEngine::DoOperator(PDF_PSOP op) { … }