ReqLine_t parseRequestLine (int fd)
{
enum ReqKind_t kind;
ReqLine_t reqline;
switch(token.kind){
case TOKEN_HEAD:
kind = REQ_KIND_HEAD;
break;
case TOKEN_GET:
kind = REQ_KIND_GET;
break;
default:
parseError(fd);
break;
}
advance(fd, 1);
eatToken(TOKEN_SPACE, fd, 1);
char *uri = eatToken(TOKEN_STR, fd, 1);
eatToken(TOKEN_SPACE, fd, 1);
eatToken(TOKEN_HTTP_ONE_ONE, fd, 1);
eatToken(TOKEN_CRLF, fd, 1);
if (DEBUG){
fprintf (stderr, "uri=%s\n", uri);
}
reqline = ReqLine_new (0
, uri
, HTTP_ONE_ONE);
ReqLine_print (1, reqline);
return reqline;
}
void parseHeaders (int fd)
{
advance(fd,1);
int i = 0;
fprintf (stderr, "header starting\n");
while (token.kind != TOKEN_CRLF){
// this should not be string...,
// a dirty hack
/*if(i)
advance(fd, 1);
i = 1;*/
char *str1 = eatToken(TOKEN_STR, fd, 1);
advance (fd, 1);
eatToken(TOKEN_SPACE, fd, 0);
advance (fd, 0);
char *str2 = eatToken(TOKEN_STR, fd, 1);
if(strcmp(str1,"Content-Length:") == 0)
{
printf("Content-Length Match sucess Length = %s..\n",str2);
//read length number of body
gLength = atoi(str2);
}
advance (fd, 1);
eatToken(TOKEN_CRLF, fd, 1);
//fprintf (stderr, "eeee");
advance(fd, 1);
//printf("kind = %d\n",token.kind);
}
return;
}
ReqLine_t Parse_reqLine (int fd)
{
enum ReqKind_t kind;
ReqLine_t reqline;
getToken(fd, 1); //modify
//printf("parse(F) uri = %s; kind = %d; n = %d\n", token.lexeme, token.kind, TOKEN_POST);
switch(token.kind){
case TOKEN_HEAD:
kind = REQ_KIND_HEAD;
break;
case TOKEN_GET:
kind = REQ_KIND_GET;
break;
case TOKEN_POST:
kind = REQ_KIND_POST;
break;
default:
parseError(fd);
break;
}
advance(fd, 1);
eatToken(TOKEN_SPACE, fd, 1);
advance (fd, 1); //modify
char *uri = eatToken(TOKEN_STR, fd, 1);
//eatToken(TOKEN_SPACE, fd, 1);
advance (fd, 1);
eatToken(TOKEN_SPACE, fd , 1);
advance(fd, 1);
eatToken(TOKEN_HTTP_ONE_ONE, fd, 1);
advance(fd, 1);
eatToken(TOKEN_CRLF, fd, 1);
///no more eat token
if (DEBUG){
fprintf (stderr, "uri=%s\n", uri);
}
reqline = ReqLine_new ( kind
, uri
, HTTP_ONE_ONE);
ReqLine_print (1, reqline);
return reqline;
}
void parseHeaders (int fd)
{
fprintf (stderr, "header starting\n");
while (token.kind != TOKEN_CRLF){
// this should not be string...,
// a dirty hack
eatToken(TOKEN_STR, fd, 1);
eatToken(TOKEN_SPACE, fd, 0);
eatToken(TOKEN_STR, fd, 1);
eatToken(TOKEN_CRLF, fd, 1);
fprintf (stderr, "eeee");
}
return;
}
CAssemblerCommand* Parser::handleError()
{
// skip the rest of the line
const Token& token = nextToken();
while (peekToken().line == token.line)
eatToken();
clearError();
return new InvalidCommand();
}
bool Parser::matchToken(TokenType type, bool optional)
{
if (optional)
{
const Token& token = peekToken();
if (token.type == type)
eatToken();
return true;
}
return nextToken().type == type;
}
bool Parser::parseExpressionList(std::vector<Expression>& list, int min, int max)
{
bool valid = true;
list.clear();
list.reserve(max >= 0 ? max : 32);
const Token& start = peekToken();
Expression exp = parseExpression();
list.push_back(exp);
if (exp.isLoaded() == false)
{
printError(start,L"Parameter failure");
getTokenizer()->skipLookahead();
valid = false;
}
while (peekToken().type == TokenType::Comma)
{
eatToken();
exp = parseExpression();
list.push_back(exp);
if (exp.isLoaded() == false)
{
printError(start,L"Parameter failure");
getTokenizer()->skipLookahead();
valid = false;
}
}
if (list.size() < (size_t) min)
{
printError(start,L"Not enough parameters (min %d)",min);
return false;
}
if (max != -1 && (size_t) max < list.size())
{
printError(start,L"Too many parameters (max %d)",max);
return false;
}
return valid;
}
CAssemblerCommand* Parser::parseDirective(const DirectiveMap &directiveSet)
{
const Token &tok = peekToken();
if (tok.type != TokenType::Identifier)
return nullptr;
const std::wstring stringValue = tok.getStringValue();
auto matchRange = directiveSet.equal_range(stringValue);
for (auto it = matchRange.first; it != matchRange.second; ++it)
{
const DirectiveEntry &directive = it->second;
if (directive.flags & DIRECTIVE_DISABLED)
continue;
if ((directive.flags & DIRECTIVE_NOCASHOFF) && Global.nocash == true)
continue;
if ((directive.flags & DIRECTIVE_NOCASHON) && Global.nocash == false)
continue;
if ((directive.flags & DIRECTIVE_NOTINMEMORY) && Global.memoryMode == true)
continue;
if (directive.flags & DIRECTIVE_MIPSRESETDELAY)
Arch->NextSection();
eatToken();
CAssemblerCommand* result = directive.function(*this,directive.flags);
if (result == nullptr)
{
if (hasError() == false)
printError(tok,L"Directive parameter failure");
return nullptr;
}
return result;
}
return nullptr;
}
CAssemblerCommand* Parser::parseMacroCall()
{
const Token& start = peekToken();
if (start.type != TokenType::Identifier)
return nullptr;
auto it = macros.find(start.getStringValue());
if (it == macros.end())
return nullptr;
ParserMacro& macro = it->second;
eatToken();
// create a token stream for the macro content,
// registering replacements for parameter values
TokenStreamTokenizer macroTokenizer;
std::set<std::wstring> identifierParameters;
for (size_t i = 0; i < macro.parameters.size(); i++)
{
if (i != 0)
{
if (nextToken().type != TokenType::Comma)
return nullptr;
}
if (i == macro.parameters.size())
{
size_t count = macro.parameters.size();
while (peekToken().type == TokenType::Comma)
{
eatToken();
parseExpression();
}
printError(start,L"Not enough macro arguments (%d vs %d)",count,macro.parameters.size());
return nullptr;
}
TokenizerPosition startPos = getTokenizer()->getPosition();
Expression exp = parseExpression();
if (exp.isLoaded() == false)
return nullptr;
TokenizerPosition endPos = getTokenizer()->getPosition();
std::vector<Token> tokens = getTokenizer()->getTokens(startPos,endPos);
// remember any single identifier parameters for the label replacement
if (tokens.size() == 1 && tokens[0].type == TokenType::Identifier)
identifierParameters.insert(tokens[0].getStringValue());
// give them as a replacement to new tokenizer
macroTokenizer.registerReplacement(macro.parameters[i],tokens);
}
if (peekToken().type == TokenType::Comma)
{
size_t count = macro.parameters.size();
while (peekToken().type == TokenType::Comma)
{
eatToken();
parseExpression();
count++;
}
printError(start,L"Too many macro arguments (%d vs %d)",count,macro.parameters.size());
return nullptr;
}
// a macro is fully parsed once when it's loaded
// to gather all labels. it's not necessary to
// instantiate other macros at that time
if (initializingMacro)
return new DummyCommand();
// the first time a macro is instantiated, it needs to be analyzed
// for labels
if (macro.counter == 0)
{
initializingMacro = true;
// parse the short lived next command
macroTokenizer.init(macro.content);
CAssemblerCommand* command = parse(¯oTokenizer,true);
delete command;
macro.labels = macroLabels;
macroLabels.clear();
initializingMacro = false;
}
// register labels and replacements
for (const std::wstring& label: macro.labels)
{
// check if the label is using the name of a parameter
// in that case, don't register a unique replacement
if (identifierParameters.find(label) != identifierParameters.end())
continue;
// otherwise make sure the name is unique
std::wstring fullName;
if (Global.symbolTable.isLocalSymbol(label))
fullName = formatString(L"@@%s_%s_%08X",macro.name,label.substr(2),macro.counter);
else if (Global.symbolTable.isStaticSymbol(label))
fullName = formatString(L"@%s_%s_%08X",macro.name,label.substr(1),macro.counter);
else
fullName = formatString(L"%s_%s_%08X",macro.name,label,macro.counter);
macroTokenizer.registerReplacement(label,fullName);
}
macroTokenizer.init(macro.content);
macro.counter++;
return parse(¯oTokenizer,true);
}
bool Parser::checkMacroDefinition()
{
const Token& first = peekToken();
if (first.type != TokenType::Identifier)
return false;
if (!first.stringValueStartsWith(L'.') || first.getStringValue() != L".macro")
return false;
eatToken();
// nested macro definitions are not allowed
if (initializingMacro)
{
printError(first,L"Nested macro definitions not allowed");
while (!atEnd())
{
const Token& token = nextToken();
if (token.type == TokenType::Identifier && token.getStringValue() == L".endmacro")
break;
}
return true;
}
std::vector<Expression> parameters;
if (parseExpressionList(parameters,1,-1) == false)
return false;
// load name
std::wstring macroName;
if (parameters[0].evaluateIdentifier(macroName) == false)
return false;
// duplicate check the macro
ParserMacro ¯o = macros[macroName];
if (macro.name.length() != 0)
{
printError(first,L"Macro \"%s\" already defined",macro.name);
return false;
}
// and register it
macro.name = macroName;
macro.counter = 0;
// load parameters
for (size_t i = 1; i < parameters.size(); i++)
{
std::wstring name;
if (parameters[i].evaluateIdentifier(name) == false)
return false;
macro.parameters.push_back(name);
}
// load macro content
TokenizerPosition start = getTokenizer()->getPosition();
bool valid = false;
while (atEnd() == false)
{
const Token& tok = nextToken();
if (tok.type == TokenType::Identifier && tok.getStringValue() == L".endmacro")
{
valid = true;
break;
}
}
// no .endmacro, not valid
if (valid == false)
return true;
// get content
TokenizerPosition end = getTokenizer()->getPosition().previous();
macro.content = getTokenizer()->getTokens(start,end);
return true;
}