Assembler Class Reference

#include <Assembler.hh>

Collaboration diagram for Assembler:

Public Member Functions
	Assembler (TPEF::BinaryStream &assemblerFile, TTAMachine::Machine &assemblerMachine)
TPEF::Binary *	compile ()
const std::set< CompilerMessage > &	warnings () const
const CompilerMessage &	error () const
void	addWarning (UValue lineNumber, std::string errorMessage)
const TTAMachine::Machine &	targetMachine () const

Private Member Functions
void	readAssemblerCode ()
std::string	codeLine (UValue lineNumber) const

Private Attributes
TPEF::BinaryStream &	stream_
	File containing file to assemble.
TTAMachine::Machine *	mach_
	Machine for assembled TPEF.
CompilerMessage	error_
	Last thrown error message.
AssemblyParserDiagnostic	parserDiagnostic_
	Parser messages.
std::shared_ptr< std::string >	asmCode_
	String containing code to compile.

Detailed Description

TCE Assembler user interface.

Definition at line 55 of file Assembler.hh.

Constructor & Destructor Documentation

Assembler()

Assembler::Assembler	(	TPEF::BinaryStream &	assemblerFile,
		TTAMachine::Machine &	assemblerMachine
	)

Constructor.

Parameters

assemblerFile	Stream containing file to assemble.
assemblerMachine	Machine to use for running compiled binary.

Definition at line 55 of file Assembler.cc.

                               :
    stream_(assemblerFile), mach_(&assemblerMachine) {
}

Member Function Documentation

addWarning()

void Assembler::addWarning	(	UValue	lineNumber,
		std::string	errorMessage
	)

Adds warning message for client to see.

Parameters

lineNumber	Line number of assembly code, where error accured.
errorMessage	Warning message.

Definition at line 140 of file Assembler.cc.

                                                               {
    parserDiagnostic_.addWarning(lineNumber, errorMessage);
}

References AssemblyParserDiagnostic::addWarning(), and parserDiagnostic_.

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codeLine()

std::string Assembler::codeLine ( UValue  lineNumber ) const

private

Definition at line 196 of file Assembler.cc.

                                           {
    return parserDiagnostic_.codeLine(lineNumber);
}

References AssemblyParserDiagnostic::codeLine(), and parserDiagnostic_.

Referenced by compile().

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compile()

Binary * Assembler::compile

(

)

Compiles assembler and returns TPEF hierarchy.

Returns

Compiled TPEF.

Exceptions

CompileError

If there was any problems during the compilation.

Definition at line 68 of file Assembler.cc.

                   {
    // read binary stream to string
    readAssemblerCode();
 
    // clear old warnings from previous compilation
    parserDiagnostic_.reset(asmCode_);
 
    Binary* newBinary = new Binary();
 
    // this one does the actual parsing work
    AssemblerParser parser(*newBinary, *mach_, &parserDiagnostic_);
 
    try {
        try {
            if (!parser.compile(*asmCode_)) {
 
                CompileError error(
                    __FILE__, __LINE__, __func__, "Syntax error.");
 
                error.setCodeFileLineNumber(parser.errorLine());
 
                throw error;
            }
 
        // ObjectAllreadyExists and IllegalMachine exceptions.
        } catch (Exception& e) {
 
            CompileError error(
                __FILE__, __LINE__, __func__, e.errorMessage());
 
            error.setCause(e);
            error.setCodeFileLineNumber(parser.errorLine());
 
            throw error;
        }
 
        parser.finalize(mach_->isLittleEndian());
 
    } catch (CompileError& e) {
 
        error_.lineNumber = e.codeFileLineNumber();
        error_.assemblerLine = codeLine(e.codeFileLineNumber());
        error_.message = e.errorMessage();
 
        // clean up internals of creators and managers and delete 
        // partial binary
        parser.cleanup();
 
        delete newBinary;
        newBinary = NULL;
 
        CompileError error(
            __FILE__, __LINE__, __func__,
            "Error in line " + Conversion::toString(error_.lineNumber) +
            ": " + error_.assemblerLine + "\nMessage: " + error_.message);
 
        error.setCause(e);
        error.setCodeFileLineNumber(error_.lineNumber);
 
        throw error;
    }
 
    return newBinary;
}

References __func__, asmCode_, CompilerMessage::assemblerLine, AssemblerParser::cleanup(), CompileError::codeFileLineNumber(), codeLine(), AssemblerParser::compile(), error(), error_, AssemblerParser::errorLine(), Exception::errorMessage(), AssemblerParser::finalize(), TTAMachine::Machine::isLittleEndian(), CompilerMessage::lineNumber, mach_, CompilerMessage::message, parserDiagnostic_, readAssemblerCode(), AssemblyParserDiagnostic::reset(), and Conversion::toString().

Referenced by main().

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error()

const CompilerMessage & Assembler::error

(

)

const

Returns last thrown error message..

Returns

Error that halted compilation.

Definition at line 165 of file Assembler.cc.

                       {
    return error_;
}

References error_.

Referenced by compile().

readAssemblerCode()

void Assembler::readAssemblerCode ( )

private

Reads assembly code from binary stream to a string.

Definition at line 173 of file Assembler.cc.

                             {
    unsigned int streamPosition = stream_.readPosition();
 
    asmCode_ = std::make_shared<std::string>();
 
    // read file to string and mark line start indexes.
    for (unsigned int i = streamPosition; i < stream_.sizeOfFile(); i++) {
        Byte readByte = stream_.readByte();
        *asmCode_ += readByte;
    }
 
    // restore stream position...
    stream_.setReadPosition(streamPosition);
}

References asmCode_, TPEF::BinaryStream::readByte(), TPEF::BinaryStream::readPosition(), TPEF::BinaryStream::setReadPosition(), TPEF::BinaryStream::sizeOfFile(), and stream_.

Referenced by compile().

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targetMachine()

const TTAMachine::Machine & Assembler::targetMachine

(

)

const

Returns the target machine of the assembler.

Returns

The target machine.

Definition at line 150 of file Assembler.cc.

                               {
    return *mach_;
}

References mach_.

warnings()

const std::set< CompilerMessage > & Assembler::warnings

(

)

const

Definition at line 155 of file Assembler.cc.

                          {
    return parserDiagnostic_.warnings();
}

References parserDiagnostic_, and AssemblyParserDiagnostic::warnings().

Referenced by main().

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Member Data Documentation

asmCode_

std::shared_ptr<std::string> Assembler::asmCode_

private

String containing code to compile.

Definition at line 89 of file Assembler.hh.

Referenced by compile(), and readAssemblerCode().

error_

CompilerMessage Assembler::error_

private

Last thrown error message.

Definition at line 83 of file Assembler.hh.

Referenced by compile(), and error().

mach_

TTAMachine::Machine* Assembler::mach_

private

Machine for assembled TPEF.

Definition at line 80 of file Assembler.hh.

Referenced by compile(), and targetMachine().

parserDiagnostic_

AssemblyParserDiagnostic Assembler::parserDiagnostic_

private

Parser messages.

Definition at line 86 of file Assembler.hh.

Referenced by addWarning(), codeLine(), compile(), and warnings().

stream_

TPEF::BinaryStream& Assembler::stream_

private

File containing file to assemble.

Definition at line 77 of file Assembler.hh.

Referenced by readAssemblerCode().

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The documentation for this class was generated from the following files:

• Assembler.hh
• Assembler.cc