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diff --git a/util/token.cpp b/util/token.cpp
index fcf00dac..8e7e3909 100644
--- a/util/token.cpp
+++ b/util/token.cpp
@@ -1,246 +1,249 @@
#include "token.h"
#include "token_exception.h"
#include <string>
#include <vector>
#include <ostream>
#include <sstream>
#include <iostream>
using namespace std;
Token::Token():
num_token(1),
parent( NULL ),
own(true){
name = "HEAD";
}
Token::Token( string tok, bool parse ):
num_token( 1 ),
parent( NULL ),
own(true){
/* legacy code, not used much */
if ( !parse ){
name = tok;
while ( name.find(' ' ) == 0 )
name.erase( 0, 1 );
// lowerCase( name );
return;
}
}
Token::Token(Token const & copy):
num_token(1),
parent(copy.parent),
own(false){
this->tokens = copy.tokens;
this->name = copy.name;
this->filename = copy.filename;
}
/* Dump token to the screen */
void Token::print( const string & space ){
cout<<space<<"Token: "<< getName() << endl;
for ( signed int i = 0; i < numTokens(); i++ ){
Token * x = getToken( i );
x->print( space + " |--" );
}
}
void Token::toString( ostream & stream, const string & space ){
if ( numTokens() == -1 ){
stream << getName();
} else {
stream << endl;
stream << space << "(" << getName();
for ( signed int i = 0; i < numTokens(); i++ ){
Token * x = getToken( i );
stream << " ";
x->toString( stream, space + " " );
}
stream << ")";
}
}
/* helper function */
string Token::lowerCase( const string & s ){
string ret;
for ( unsigned int q = 0; q < s.length(); q++ ){
if ( s[q] >= 'A' && s[q] <= 'Z' ){
ret += s[q] - 'A' + 'a';
} else {
ret += s[q];
}
}
return ret;
}
/* Return next token and increment the internal position
* of the current token
*/
Token * Token::readToken(){
if ( num_token < tokens.size() ){
return tokens[ num_token++ ];
}
return NULL;
}
bool Token::hasTokens(){
return num_token < tokens.size();
}
Token * Token::getToken( unsigned int n ){
int q = numTokens();
if ( q == -1 ) return NULL;
if ( n >= 0 && (signed int)n < q )
return tokens[n+1];
return NULL;
}
/* If the token has children then the name of this token
* is the name of the first child token.
* Otherwise, the name is this token's name
*/
const string & Token::getName() const {
if ( numTokens() != -1 ){
return tokens[0]->_getName();
}
// cout<<"No tokens!!"<<endl;
return name;
}
const Token * const Token::getParent() const {
return this->parent;
}
const string Token::getLineage() const {
if ( getParent() != NULL ){
return getParent()->getLineage() + " -> " + getName();
}
return getName();
}
/* A token's identity is its name
*/
bool Token::operator== ( const string & rhs ){
return lowerCase( getName() ) == lowerCase( rhs );
}
bool Token::operator!= ( const string & rhs ){
return !( *this == rhs );
}
/* extracting operators */
Token & Token::operator>>( Token * & rhs ) throw( TokenException ){
Token * x = readToken();
if ( x == NULL ){
throw TokenException( getFileName() + ": " + string("Tried to read a token from ") + this->getName() + string(" but there are no more elements") );
}
rhs = x;
return *this;
}
void Token::setFile( const string & s ){
filename = s;
}
const string Token::getFileName() const {
if ( parent ){
return parent->getFileName();
} else {
return filename;
}
}
Token & Token::operator>>( string & rhs ) throw( TokenException ){
Token * l = readToken();
if ( l == NULL ){
throw TokenException( getFileName() + ":" + string("Tried to read a string from ") + this->getLineage() + string(" but there no more elements") );
}
rhs = l->getName();
// rhs = getName();
return *this;
}
Token & Token::operator>>( int & rhs ) throw( TokenException ){
Token * l = readToken();
if ( l == NULL ){
throw TokenException( getFileName() + ": " + string("Tried to read an int from ") + this->getLineage() + string(" but there are no more elements") );
}
istringstream is ( l->getName() );
is >> rhs;
return *this;
}
Token & Token::operator>>( double & rhs ) throw( TokenException ){
Token * l = readToken();
if ( l == NULL ){
throw TokenException( getFileName() + ": " + string("Tried to read a double from ") + this->getLineage() + string(" but there no more elements") );
}
istringstream is ( l->getName() );
is >> rhs;
return *this;
}
Token & Token::operator>>( bool & rhs ) throw( TokenException ){
Token * l = readToken();
if ( l == NULL ){
throw TokenException( getFileName() + ": " + string("Tried to read a bool from ") + this->getLineage() + string(" but there no more elements") );
}
istringstream is ( l->getName() );
is >> rhs;
return *this;
}
-void Token::addToken( Token * t ){
- tokens.push_back( t );
+void Token::addToken(Token * t) throw (TokenException){
+ if (!own){
+ throw TokenException("This token does not own its own tokens, so you cannot add tokens to it");
+ }
+ tokens.push_back( t );
}
Token & Token::operator<<( const string & rhs ){
Token * n = new Token( rhs, false );
this->addToken( n );
return *this;
}
Token & Token::operator<<( const int rhs ){
ostringstream o;
o << rhs;
return *this << o.str();
}
Token & Token::operator<<( const double rhs ){
ostringstream o;
o << rhs;
return *this << o.str();
}
/* Delete tokens that are commented.
* A commented token has a '!' character as the first
* character in the name, e.g:
* (!a_token (child_token 2))
*/
void Token::finalize(){
for ( vector< Token * >::iterator it = tokens.begin(); it != tokens.end(); ){
Token * t = *it;
if ( t->getName().find('!') == 0 ){
delete t;
it = tokens.erase( it );
} else {
t->finalize();
it++;
}
}
}
Token::~Token(){
if (own){
for ( vector< Token * >::iterator it = tokens.begin(); it != tokens.end(); it++ ){
delete *it;
}
}
}
diff --git a/util/token.h b/util/token.h
index c1c08a56..8f7079a3 100644
--- a/util/token.h
+++ b/util/token.h
@@ -1,98 +1,98 @@
#ifndef _token_h
#define _token_h
#include <string>
#include <vector>
#include <ostream>
#include "token_exception.h"
class TokenReader;
class Configuration;
using namespace std;
/* Token:
* Basically a tree where each node stores a value in a string
* and can have 0 or more children
*/
class Token{
public:
Token(Token const & copy);
virtual ~Token();
- void addToken( Token * t );
+ void addToken( Token * t ) throw (TokenException);
/*
inline const string & getName(){
return name;
}
*/
const string & getName() const;
const Token * const getParent() const;
void setFile( const string & s );
const string getFileName() const;
const string getLineage() const;
void print( const string & space );
void toString( ostream & stream, const string & space );
Token * getToken( unsigned int n );
inline signed int numTokens() const{
return tokens.size() - 1;
}
inline const vector< Token * > * getTokens() const{
return &tokens;
}
inline void resetToken(){
num_token = 1;
}
Token * readToken();
bool hasTokens();
bool operator== ( const string & rhs );
bool operator!= ( const string & rhs );
Token & operator>>( string & rhs ) throw( TokenException );
Token & operator>>( int & rhs ) throw( TokenException );
Token & operator>>( double & rhs ) throw( TokenException );
Token & operator>>( Token * & rhs ) throw( TokenException );
Token & operator>>( bool & rhs ) throw( TokenException );
protected:
- /* Only TokenReader can create and destroy a Token */
+ /* Only TokenReader and Configuration can create and destroy a Token */
Token();
Token( string tok, bool parse = true );
friend class TokenReader;
friend class Configuration;
Token & operator<<( const string & rhs );
Token & operator<<( const int rhs );
Token & operator<<( const double rhs );
virtual inline const string & _getName(){
return name;
}
virtual inline void setParent( const Token * const parent ){
this->parent = parent;
}
string lowerCase( const string & s );
void finalize();
unsigned int num_token;
vector< Token * > tokens;
string filename;
Token const * parent;
string name;
bool own;
};
#endif

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