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Parsing of PostScript function

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Jakub Melka
2019-03-13 19:05:21 +01:00
parent ea9b513160
commit 0f0cd575d4
2 changed files with 162 additions and 1 deletions
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13
PdfForQtLib/sources/pdffunction.h
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@ -321,7 +321,6 @@ class PDFFORQTLIBSHARED_EXPORT PDFPostScriptFunction : public PDFFunction
{
public:
private:
class PDFPostScriptFunctionException : public std::exception
{
public:
@ -407,6 +406,11 @@ private:
Push
};
/// Gets the code from the byte array. If byte array contains invalid data,
/// then exception is thrown.
/// \param byteArray Byte array to be converted to the code
static Code getCode(const QByteArray& byteArray);
struct OperandObject
{
explicit inline constexpr OperandObject() :
@ -437,6 +441,8 @@ private:
struct CodeObject
{
explicit inline CodeObject() : code(Code::Return), next(INVALID_INSTRUCTION_POINTER), operand() { }
explicit inline CodeObject(OperandObject operand, InstructionPointer next) : code(Code::Push), next(next), operand(std::move(operand)) { }
explicit inline CodeObject(Code code, InstructionPointer next) : code(code), next(next), operand() { }
Code code;
InstructionPointer next;
@ -445,6 +451,11 @@ private:
using Program = std::vector<CodeObject>;
static Program parseProgram(const QByteArray& byteArray);
private:
Program m_program;
friend class PDFPostScriptFunctionStack;
friend class PDFPostScriptFunctionExecutor;
};