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#include "Tokenizer.h"
#include <QStringList>
#include "../../SyntopiaCore/Exceptions/Exception.h"
#include "../../SyntopiaCore/Logging/Logging.h"
using namespace SyntopiaCore::Exceptions;
using namespace SyntopiaCore::Logging;
namespace StructureSynth {
namespace Parser {
Tokenizer::~Tokenizer() {
}
Tokenizer::Tokenizer(QString input) {
QStringList operators;
operators << "c" << "reflect" << "color" << "blend" << "a" << "alpha" << "matrix" << "h" << "hue" << "sat" << "b" << "brightness" << "v" << "x" << "y" << "z" << "rx" << "ry" << "rz" << "s" << "fx" << "fy" << "fz" << "maxdepth" << "weight" << "md" << "w";
currentSymbol = -1;
// We will split on whitespace and line breaks
// TODO: Respect quotations ( file = "C:\Program Files\Test" )
QStringList l;
QVector<int> positions;
// We will use our own split routine
QString current;
int startPos = 0;
input += " "; // to ensure last symbol gets parsed.
bool inMultiComment = false;
bool inComment = false;
int newlines = 0;
for (int i = 0; i < input.length(); i++) {
if (input.at(i) == '\r') {
inComment = false;
newlines++;
}
// Check if we found a preprocessor comment (there must occur at the beginning of a line.
if (input.at(i) == '#' && ((i == 0) || (input.at(i-1) == '\r') || (input.at(i-1) == '\n'))) {
inComment = true; i++; continue;
}
if (i < input.length()-1) {
if (input.at(i) == '*' && input.at(i+1) == '/') {
inMultiComment = false; i++; continue;
}
if (input.at(i) == '/' && input.at(i+1) == '/') {
inComment = true; i++; continue;
}
if (input.at(i) == '/' && input.at(i+1) == '*') {
inMultiComment = true; i++; continue;
}
}
if (inMultiComment || inComment) continue;
if (input.at(i) == '[') {
while (input.at(i) != ']' && i < input.length()) {
current += input.at(i);
i++;
}
current += ']';
if (input.at(i) != ']') {
throw ParseError("No matching ']' found for '['", startPos);
}
l.append(current);
positions.append(startPos-newlines);
startPos = i;
current = "";
} else
if (input.at(i) == '{' || input.at(i) == '}' || input.at(i) == ' ' || (input.at(i) == '\r') || (input.at(i) == '\n')) {
QString trimmed = current.remove(QRegExp("\\s|\\r|\\n"));
if (!current.trimmed().isEmpty()) { l.append(trimmed); positions.append(startPos-newlines); }
if (input.at(i) == '{' || input.at(i) == '}') { l.append(QString(input.at(i))); positions.append(i-newlines); }
current = "";
startPos = i;
} else {
current += input.at(i);
}
}
for (int i = 0; i < l.size(); i++) {
QString s = l[i];
int pos = positions[i];
QString sl = l[i].toLower();
if (sl == "rule") {
symbols.append(Symbol(pos, Symbol::Rule, s));
} else if (sl == "{") {
symbols.append(Symbol(pos, Symbol::LeftBracket, s));
} else if (sl == ">") {
symbols.append(Symbol(pos, Symbol::MoreThan, s));
}else if (sl == "}") {
symbols.append(Symbol(pos, Symbol::RightBracket, s));
} else if (sl == "*") {
symbols.append(Symbol(pos, Symbol::Multiply, s));
} else if (sl == "set") {
symbols.append(Symbol(pos, Symbol::Set, s));
} else if (QString("+-0123456789").contains(s[0])) {
// It is a number (hopefully)
if (s.count("/") == 1) {
QString s1 = s.section("/",0,0);
QString s2 = s.section("/",1,1);
bool succes1 = false;
int i1 = s1.toInt(&succes1);
bool succes2 = false;
int i2 = s2.toInt(&succes2);
if ((i1 && i2) && (i2 != 0)) {
Symbol ns(pos, Symbol::Number, s);
ns.isInteger = false;
ns.floatValue = ((double)i1)/i2;
symbols.append(ns);
continue;
} else {
throw ParseError("Invalid fraction found: " + s, pos);
}
}
bool succes = false;
int i = s.toInt(&succes);
if (succes) {
Symbol ns(pos, Symbol::Number, s);
ns.isInteger = true;
ns.intValue = i;
symbols.append(ns);
continue;
}
// the number was not an integer... Is it a floating-point value?
double d = s.toDouble(&succes);
if (succes) {
Symbol ns(pos, Symbol::Number, s);
ns.isInteger = false;
ns.floatValue = d;
//INFO(QString("Added float value:%1").arg(ns.floatValue));
symbols.append(ns);
continue;
}
throw ParseError("Invalid symbol found: " + s, pos);
} else if (operators.contains(sl) ) {
QString longName = sl;
// Resolve abbreviations
if (longName == "md") longName = "maxdepth";
if (longName == "w") longName = "weight";
if (longName == "h") longName = "hue";
if (longName == "b") longName = "brightness";
if (longName == "a") longName = "alpha";
if (longName == "c") longName = "color";
Symbol ns(pos, Symbol::Operator, longName);
symbols.append(ns);
} else {
// TODO: We should check syntax of userstring here... (we dont want strings like slk"{/})
Symbol ns(pos, Symbol::UserString, sl);
symbols.append(ns);
}
}
for (int i = 0; i < symbols.size(); i++) {
//INFO(QString("%1. Symbol: %2, Position: %3").arg(i).arg(symbols[i].text).arg(positions[i]));
}
}
Symbol Tokenizer::getSymbol() {
currentSymbol++;
if (currentSymbol < symbols.size()) {
return symbols[currentSymbol];
}
return Symbol(-1, Symbol::End, "#END#");
}
}
}
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