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cinterpreter.cpp
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/***************************************************************************
** **
** This file is part of SpineCreator, an easy to use, GUI for **
** describing spiking neural network models. **
** Copyright (C) 2013 Alex Cope, Paul Richmond **
** **
** This program is free software: you can redistribute it and/or modify **
** it under the terms of the GNU General Public License as published by **
** the Free Software Foundation, either version 3 of the License, or **
** (at your option) any later version. **
** **
** This program is distributed in the hope that it will be useful, **
** but WITHOUT ANY WARRANTY; without even the implied warranty of **
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the **
** GNU General Public License for more details. **
** **
** You should have received a copy of the GNU General Public License **
** along with this program. If not, see http://www.gnu.org/licenses/. **
** **
****************************************************************************
** Author: Alex Cope **
** Website/Contact: http://bimpa.group.shef.ac.uk/ **
****************************************************************************/
#include "cinterpreter.h"
//#include "G__ci.h"
//QString QString::number(float);
#include "nineML_classes.h"
#include "globalHeader.h"
//#include "stringify.h"
int precedance(valop in) {
if (in.val == ADD || in.val == SUB) return 0;
if (in.val == MULT || in.val == DIV) return 1;
// oops
return -1;
}
bool isOperation(QString in) {
QString operations = "+-*/";
if (operations.contains(in[0])) {
return true;
}
return false;
}
opType getOpVal(QString in) {
if (in[0] == '+') return ADD;
if (in[0] == '-') return SUB;
if (in[0] == '*') return MULT;
if (in[0] == '/') return DIV;
return ADD;
}
condType getCondVal(QString in) {
if (in == "==") return EQ;
if (in == ">") return GT;
if (in == "<") return LT;
if (in == ">=") return GTEQ;
if (in == "<=") return LTEQ;
if (in == "!=") return NEQ;
return ERR;
}
bool isVar(QString in) {
QString letters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_";
if (letters.contains(in[0])) {
return true;
}
return false;
}
bool isToken(QString in) {
// once we are in a var we have a wider range of possible chars
QString tokenItems = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_1234567890#";
if (tokenItems.contains(in[0])) {
return true;
}
return false;
}
bool isNum(QString in) {
QString nums = "0123456789.";
if (nums.contains(in[0])) {
return true;
}
return false;
}
bool isCondition(QString in) {
QString nums = "=><!";
if (nums.contains(in[0])) {
return true;
}
return false;
}
bool isFunction(QString in) {
QStringList functions;
functions.push_back("pow");
functions.push_back("exp");
functions.push_back("sin");
functions.push_back("cos");
functions.push_back("log");
functions.push_back("log10");
functions.push_back("sinh");
functions.push_back("cosh");
functions.push_back("tanh");
functions.push_back("sqrt");
functions.push_back("atan");
functions.push_back("asin");
functions.push_back("acos");
functions.push_back("asinh");
functions.push_back("acosh");
functions.push_back("atanh");
functions.push_back("atan2");
functions.push_back("ceil");
functions.push_back("floor");
functions.push_back("rand");
functions.push_back("mod");
for (unsigned int i = 0; i < (uint) functions.size(); ++i) {
if (in == functions[i]) {
return true;
}
}
return false;
}
float getFuncVal(QString in) {
QStringList functions;
functions.push_back("pow");
functions.push_back("exp");
functions.push_back("sin");
functions.push_back("cos");
functions.push_back("log");
functions.push_back("log10");
functions.push_back("sinh");
functions.push_back("cosh");
functions.push_back("tanh");
functions.push_back("sqrt");
functions.push_back("atan");
functions.push_back("asin");
functions.push_back("acos");
functions.push_back("asinh");
functions.push_back("acosh");
functions.push_back("atanh");
functions.push_back("atan2");
functions.push_back("ceil");
functions.push_back("floor");
functions.push_back("rand");
functions.push_back("mod");
for (unsigned int i = 0; i < (uint) functions.size(); ++i) {
if (in == functions[i]) {
return float(i);
}
}
return -1;
}
bool isFuncUnary(QString in) {
if (in == "pow" || in == "atan2" || in == "mod" )
return false;
return true;
}
QString doError(int err) {
if (err == 1) {
return "Mismatched brackets";
}
if (err == 2) {
return "Found undefined variable";
}
if (err == 3) {
return "Unrecognised conditional";
}
if (err == 4) {
return "Truncated - boolean left hanging";
}
if (err == 5) {
return "Bad boolean operator - use && or ||";
}
if (err == 6) {
return "Incorrect maths";
}
if (err == 7) {
return "Divide by zero";
}
if (err == 8) {
return "Incorrect use of a function";
}
if (err == 9) {
return "Boolean found without a conditional";
}
if (err == 10) {
return "Too many conditionals in a section";
}
if (err == 11) {
return "Failed to evaluate";
}
if (err == 12) {
return "Something is pretty wrong here - we have failed to return from a function correctly";
}
if (err == 13) {
return "Unrecognised function";
}
return "Unrecognised error code";
}
float getVarVal(QString in, vector <lookup> varList) {
vector < lookup > builtin;
builtin.push_back(lookup("e", M_E));
builtin.push_back(lookup("pi", M_PI));
for (unsigned int i = 0; i < builtin.size(); ++i) {
if (in == builtin[i].name) {
return builtin[i].value;
}
}
for (unsigned int i = 0; i < varList.size(); ++i) {
if (in == varList[i].name) {
return varList[i].value;
}
}
return INFINITY;
}
float * getVarPtr(QString in, vector <lookup> &varList) {
/*vector < lookup > builtin;
builtin.push_back(lookup("e", M_E));
builtin.push_back(lookup("pi", M_PI));
for (unsigned int i = 0; i < builtin.size(); ++i) {
if (in == builtin[i].name) {
return builtin[i].value;
}
}*/
for (unsigned int i = 0; i < varList.size(); ++i) {
if (in == varList[i].name) {
return &(varList[i].value);
}
}
return NULL;
}
float doFunction(float val1, float val2, float opf) {
int op = int(opf);
if (op == 0 && val2 == INFINITY) return INFINITY;
if (op == 16 && val2 == INFINITY) return INFINITY;
if (op == 20 && val2 == INFINITY) return INFINITY;
if (op != 0 && op != 16 && op != 20 && val2 != INFINITY) return INFINITY;
if (op == 0) return pow(val1, val2);
if (op == 1) return exp(val1);
if (op == 2) return sin(val1);
if (op == 3) return cos(val1);
if (op == 4) return log(val1);
if (op == 5) return log10(val1);
if (op == 6) return sinh(val1);
if (op == 7) return cosh(val1);
if (op == 8) return tanh(val1);
if (op == 9) return sqrt(val1);
if (op == 10) return atan(val1);
if (op == 11) return asin(val1);
if (op == 12) return acos(val1);
if (op == 13) return asinh(val1);
if (op == 14) return acosh(val1);
if (op == 15) return atanh(val1);
if (op == 16) return atan2(val1, val2);
if (op == 17) return ceil(val1);
if (op == 18) return floor(val1);
if (op == 19) return float(rand())/RAND_MAX;
if (op == 20) return fmod(val1, val2);
return 0;
}
void printStack(vector <valop> opstackIn) {
cerr << "STACK: \n";
for (unsigned int i = 0; i < opstackIn.size(); ++i) {
cerr << float(i) << ": ";
cerr << float(opstackIn[i].op) << " " << float(opstackIn[i].val) << "\n";
}
}
/*
float doCond(float val1, float val2, float type) {
if (type == EQ) {if (val1 == val2) {return 1;} else {return 0;}}
if (type == GT) {if (val1 > val2) {return 1;} else {return 0;}}
if (type == LT) {if (val1 < val2) {return 1;} else {return 0;}}
if (type == GTEQ) {if (val1 >= val2) {return 1;} else {return 0;}}
if (type == LTEQ) {if (val1 <= val2) {return 1;} else {return 0;}}
if (type == NEQ) {if (val1 != val2) {return 1;} else {return 0;}}
return 0;
}
float doMaths(int startInd, int endInd, vector <valop> opstackIn) {
vector <valop> opstack;
for (unsigned int i = (uint) startInd; i < (uint) endInd; ++i) {
opstack.push_back(opstackIn[i]);
}
// multiplication and division first
for (unsigned int i = 0; i < opstack.size(); ++i) {
//printStack(opstack);
valop newValOp;
if (opstack[i].op == OP && opstack[i].val == float(MULT)) {
// can't have a * as the first thing
if (i == 0) return INFINITY;
if (i + 1 == opstack.size()) return INFINITY;
if (opstack[i-1].op == VAL && opstack[i+1].op == VAL) {
newValOp.op = VAL;
newValOp.val = opstack[i-1].val * opstack[i+1].val;
opstack.erase(opstack.begin()+i-1, opstack.begin()+i+2);
opstack.insert(opstack.begin()+i-1, newValOp);
// shunt back i as we took out 2 behind but added 1 behind
i -= 1;
} else {
// can't do an operation on non-values
return INFINITY;
}
} else if (opstack[i].op == OP && opstack[i].val == float(DIV)) {
// can't have a / as the first thing
if (i == 0) return INFINITY;
if (i + 1 == opstack.size()) return INFINITY;
if (opstack[i-1].op == VAL && opstack[i+1].op == VAL) {
// no divide by zero
if (opstack[i+1].val == 0) return -INFINITY;
newValOp.op = VAL;
newValOp.val = opstack[i-1].val / opstack[i+1].val;
opstack.erase(opstack.begin()+i-1, opstack.begin()+i+2);
opstack.insert(opstack.begin()+i-1,newValOp);
// shunt back i as we took out 2 behind but added 1 behind
i -= 1;
} else {
// can't do an operation on non-values
return INFINITY;
}
}
}
// now onto addition and subtraction:
for (unsigned int i = 0; i < opstack.size(); ++i) {
valop newValOp;
if (opstack[i].op == OP && opstack[i].val == float(ADD)) {
// if we have an add first it makes no odds, so just remove it
if (i == 0) {
opstack.erase(opstack.begin());
continue;
}
if (i + 1 == opstack.size()) return INFINITY;
if (opstack[i-1].op == VAL && opstack[i+1].op == VAL) {
newValOp.op = VAL;
newValOp.val = opstack[i-1].val + opstack[i+1].val;
opstack.erase(opstack.begin()+i-1, opstack.begin()+i+2);
opstack.insert(opstack.begin()+i-1, newValOp);
// shunt back i as we took out 2 behind but added 1 behind
i -= 1;
} else {
// can't do an operation on non-values
return INFINITY;
}
} else if (opstack[i].op == OP && opstack[i].val == float(SUB)) {
// if - is first thing then negative next val
if (i == 0) {
if (opstack[i+1].op == VAL) {
opstack[i+1].val *= -1;
opstack.erase(opstack.begin());
continue;
}
else return INFINITY;
}
if (i + 1 == opstack.size()) return INFINITY;
if (opstack[i-1].op == VAL && opstack[i+1].op == VAL) {
newValOp.op = VAL;
newValOp.val = opstack[i-1].val - opstack[i+1].val;
opstack.erase(opstack.begin()+i-1, opstack.begin()+i+2);
opstack.insert(opstack.begin()+i-1,newValOp);
// shunt back i as we took out 2 behind but added 1 behind
i -= 1;
} else {
// can't do an operation on non-values
return INFINITY;
}
}
}
// ok, we should now have an opstack of size 1, who only contains a value, which we send back!
if (opstack.size() != 1) return INFINITY;
if (opstack[0].op != float(VAL)) return INFINITY;
// all good - send it back
return opstack[0].val;
}
QString doBrackets(int startInd, int endInd, vector <valop> opstackIn, float * outVal) {
vector <valop> opstack;
for (unsigned int i = (uint) startInd; i < (uint) endInd; ++i) {
opstack.push_back(opstackIn[i]);
}
// brackets first:
bool noBrackets = false;
while (!noBrackets) {
//printStack(opstack);
noBrackets = true;
int openIndex = -1;
int closeIndex = -1;
bool isFunc = false;
// find innermost set of brackets
for (unsigned int i = 0; i < opstack.size(); ++i) {
if (opstack[i].op == BRACKET && opstack[i].val == 1) {
isFunc = false;
openIndex = i;
}
if (opstack[i].op == FUNC) {
isFunc = true;
openIndex = i;
}
if (opstack[i].op == BRACKET && opstack[i].val == 2) {
// throw an error if we haven't had an open bracket, but get a closed
if (openIndex == -1) return doError(1);
closeIndex = i;
float val;
// if we are a function:
if (isFunc) {
// look for commas
int commaIndex = -1;
for (unsigned int j = (uint) openIndex; j < (uint) closeIndex; ++j) {
if (opstack[j].op == COMMA) {
commaIndex = j;
}
}
// if a comma is there...
if (commaIndex != -1) {
float val1 = doMaths(openIndex+1, commaIndex, opstack);
float val2 = doMaths(commaIndex+1, closeIndex, opstack);
if (val1 == INFINITY || val2 == INFINITY) return doError(6);
if (val1 == -INFINITY || val2 == -INFINITY) return doError(7);
val = doFunction(val1, val2, opstack[openIndex].val);
if (val == INFINITY) return doError(8);
} else {
// ...otherwise
val = doMaths(openIndex+1, closeIndex, opstack);
if (val == INFINITY) return doError(6);
if (val == -INFINITY) return doError(7);
val = doFunction(val, INFINITY, opstack[openIndex].val);
if (val == INFINITY) return doError(8);
}
} else {
// otherwise we are good to parse this chunk!
val = doMaths(openIndex+1, closeIndex, opstack);
if (val == INFINITY) return doError(6);
if (val == -INFINITY) return doError(7);
}
// put the new value in in place of the brackets:
opstack.erase(opstack.begin()+openIndex, opstack.begin()+closeIndex+1);
valop newValOp;
newValOp.op = VAL;
newValOp.val = val;
opstack.insert(opstack.begin() + openIndex, newValOp);
// still have brackets!
noBrackets = false;
// start over
break;
}
}
}
// no brackets left, so do rest of maths and send out
float finalValue = doMaths(0, opstack.size(), opstack);
if (finalValue == INFINITY) return doError(6);
if (finalValue == -INFINITY) return doError(7);
*outVal = finalValue;
return "";
}
QString doConditional(int startInd, int endInd, vector <valop> opstackIn, float * outVal) {
vector <valop> opstack;
for (unsigned int i = (uint) startInd; i < (uint) endInd; ++i) {
opstack.push_back(opstackIn[i]);
}
//printStack(opstack);
// find the conditional, check there is only one, and then evaluate both sides
int condInd = -1;
for (unsigned int i = 0; i < opstack.size(); ++i) {
if (opstack[i].op == COND) {
if (condInd != -1) return doError(10);
condInd = i;
}
}
// if no conditional, then just pass it on
if (opstack.size() == 1) {
*outVal = opstack[0].val;
// success
return "";
} else if (condInd == -1) {
return doError(11);
}
// find surrounding brackets
int brackets = 0;
for (unsigned int i = 0; i < (uint) condInd; ++i) {
if ((opstack[i].op == BRACKET && opstack[i].val == 1) || opstack[i].op == FUNC) {
++brackets;
}
else if (opstack[i].op == BRACKET && opstack[i].val == 2) {
--brackets;
}
}
if (brackets > 0) {
opstack.erase(opstack.begin(), opstack.begin()+1);
opstack.erase(opstack.end()-1, opstack.end());
--condInd;
} else if (brackets != 0) {
return doError(1);
}
// evaluate the sides:
float output1;
QString err = doBrackets(0, condInd, opstack, &output1);
if (err != "") return err;
float output2;
err = doBrackets(condInd+1, opstack.size(), opstack, &output2);
if (err != "") return err;
// do the condition:
*outVal = doCond(output1, output2, opstack[condInd].val);
return "";
}
QString doBoolean(int startInd, int endInd, vector <valop> opstackIn, float * outVal) {
vector <valop> opstack;
for (unsigned int i = (uint) startInd; i < (uint) endInd; ++i) {
opstack.push_back(opstackIn[i]);
}
//printStack(opstack);
// split by the booleans, and evaluate the conditionals in each segment, looking for brackets
vector <int> boolInds;
vector <int> boolTypes;
for (unsigned int i = 0; i < opstack.size(); ++i) {
if (opstack[i].op == BOOL_OP) {
boolInds.push_back(i);
boolTypes.push_back(opstack[i].val);
}
}
vector < float > outs;
outs.resize(boolInds.size()+1);
// split and eval each
for (unsigned int i = 0; i < boolInds.size() + 1; ++i) {
QString err;
if (i == 0) {
err = doConditional(0, boolInds[i], opstack, &outs[i]);
if (err != "") return err;
} else if (i == boolInds.size()){
err = doConditional(boolInds[i-1]+1, opstack.size(), opstack, &outs[i]);
if (err != "") return err;
} else {
err = doConditional(boolInds[i-1]+1, boolInds[i], opstack, &outs[i]);
if (err != "") return err;
}
}
// now evaluate all the booleans
*outVal = outs[0];
for (unsigned int i = 1; i < outs.size(); ++i) {
if (boolTypes[i-1] == 1) *outVal = *outVal && outs[i];
if (boolTypes[i-1] == 2) *outVal = *outVal || outs[i];
}
return "";
}
QString doBoolBrackets(int startInd, int endInd, vector <valop> opstackIn, float * outVal) {
vector <valop> opstack;
for (unsigned int i = (uint) startInd; i < (uint) endInd; ++i) {
opstack.push_back(opstackIn[i]);
}
// break up into sections, find if brackets are open or closed, then start unwrapping
bool isStuffToDo = true;
while (isStuffToDo) {
isStuffToDo = false;
vector <int> sectionState;
vector <int> boolLocs;
sectionState.push_back(0);
boolLocs.push_back(-1);
for (unsigned int i = 0; i < opstack.size(); ++i) {
if (opstack[i].op == BRACKET && opstack[i].val == 1) {
sectionState.back() += 1;
}
if (opstack[i].op == FUNC) {
sectionState.back() += 1;
}
if (opstack[i].op == BRACKET && opstack[i].val == 2) {
sectionState.back() -= 1;
}
if (opstack[i].op == BOOL_OP) {
boolLocs.push_back(i);
sectionState.push_back(0);
}
}
boolLocs.push_back(opstack.size());
// we now have a list of all the open and closed sections, which must add to zero:
int sum = 0;
for (unsigned int i = 0; i < sectionState.size(); ++i) {
sum += sectionState[i];
}
if (sum !=0) return doError(1);
// now we choose the innermost bools and evaluate them:
// find max number of open brackets, then find next closed one:
int openSection = -1;
int maxOpen = 0;
sum = 0;
for (unsigned int i = 0; i < sectionState.size(); ++ i) {
sum += sectionState[i];
if (sum > maxOpen) openSection = i;
}
// now find the next closed bracket section:
int closedSection = -1;
if (openSection != -1) {
isStuffToDo = true;
for (unsigned int i = openSection; i < sectionState.size(); ++ i) {
if (sectionState[i] < 0) {closedSection = i; break;}
}
// now do the bools in this section
float out;
QString err = doBoolean(boolLocs[openSection]+2, boolLocs[closedSection+1]-1, opstack, &out);
if (err != "") return err;
// relace the section with the result
opstack.erase(opstack.begin()+boolLocs[openSection]+1, opstack.begin()+boolLocs[closedSection+1]);
valop newValOp;
newValOp.val = out;
newValOp.op = VAL;
opstack.insert(opstack.begin()+boolLocs[openSection]+1, newValOp);
}
// if there are no remaining sections with brackets, finish up
if (openSection == -1) {
QString err = doBoolean(0, opstack.size(), opstack, outVal);
if (err != "") return err;
// *outVal = opstack[0].val;
// success
return "";
}
}
return doError(12);
}
*/
float interpretMaths(vector <valop> stack) {
// evaluate the stack:
vector <valop> tempStack;
for (uint i = 0; i < stack.size(); ++i) {
switch (stack[i].op) {
case VAL:
tempStack.push_back(stack[i]);
/*if (tempStack.back().ptr == NULL)
qDebug() << "value of " << tempStack.back().val << "\n";
else
qDebug() << "pointer to " << *tempStack.back().ptr << "\n";*/
break;
case FUNC:
{
// fetch first operand from stack
float val1;
if (!tempStack.size())
val1 = INFINITY;
else {
if (tempStack.back().ptr != NULL)
val1 = *tempStack.back().ptr;
else
val1 = tempStack.back().val;
tempStack.pop_back();
}
// if stack top is operand then add it in
float val2;
if (!stack[i].isUnary) {
if (tempStack.size()) {
if (tempStack.back().ptr != NULL)
val2 = *tempStack.back().ptr;
else
val2 = tempStack.back().val;
tempStack.pop_back();
}
} else {
val2 = val1;
val1 = INFINITY;
}
float result = doFunction(val2, val1, stack[i].val);
/*qDebug() << "function " << "isUnary(" << float(stack[i].isUnary) << ") " << stack[i].val << " " << val2 << " " << val1 << "\n";
qDebug() << "result = " << result;*/
// push back result onto stack
valop res;
res.val = result;
res.ptr = NULL;
res.op = VAL;
tempStack.push_back(res);
}
break;
case OP:
{
// fetch first operand from stack
float val1;
if (tempStack.size()) {
if (tempStack.back().ptr != NULL)
val1 = *tempStack.back().ptr;
else
val1 = tempStack.back().val;
tempStack.pop_back();
}
// if stack top is operand then add it in
float val2 = 0;
if (!stack[i].isUnary) {
if (tempStack.size()) {
if (tempStack.back().ptr != NULL)
val2 = *tempStack.back().ptr;
else
val2 = tempStack.back().val;
tempStack.pop_back();
}
}
float result;
// apply operator (default val2 of 0 handles unary operators)
switch (int(stack[i].val)) {
case ADD:
result = val2+val1;
break;
case SUB:
result = val2-val1;
break;
case MULT:
result = val2*val1;
break;
case DIV:
result = val2/val1;
break;
}
// push back result onto stack
// qDebug() << "operation " << "isUnary(" << float(stack[i].isUnary) << ") " << stack[i].val << " " << val2 << " " << val1 << "\n";
valop res;
res.val = result;
res.ptr = NULL;
res.op = VAL;
tempStack.push_back(res);
}
break;
case COND:
break;
case BOOL_OP:
break;
case LBRACKET:
break;
case RBRACKET:
break;
case COMMA:
break;
}
}
//qDebug() << "Stacksize = " << (float) tempStack.size() << "\n";
if (tempStack.size()) {
if (tempStack.back().ptr == NULL)
return tempStack.back().val;
else
return *tempStack.back().ptr;
}
}
QString createStack(QString equation, vector <lookup> &varList, vector <valop> * returnStack) {
vector < valop > opstack;
// strip all whitespace
equation.replace(" ", "");
bool ended = false;
while (!ended) {
if (equation.size() == 0) {
ended = true;
}
valop newValOp;
newValOp.op = COMMA;
newValOp.val = -1;
if (isOperation(equation)) {
newValOp.val = float(getOpVal(equation));
if (opstack.size() != 0) {
if (opstack.back().op != VAL && opstack.back().op != RBRACKET)
newValOp.isUnary = true;
else
newValOp.isUnary = false;
} else {
newValOp.isUnary = true;
}
newValOp.op = OP;
equation.remove(0,1);
}
else if (isVar(equation)) {
QString name = QString(equation[0]);
equation.remove(0,1);
// while we are still in the token
if (equation.size() > 0) {
while (isToken(equation)) {
// get full name
name += equation[0];
equation.remove(0,1);
if (equation.size() == 0) break;
}
}
// fetch the value associated with the name, unless a function
if (equation.size() > 0) {
if (equation[0] == '(') {
newValOp.val = getFuncVal(name);
if (newValOp.val == -1) {qDebug() << "wtf"; return doError(13);}
newValOp.isUnary = isFuncUnary(name);
newValOp.op = FUNC;
equation.remove(0,1);
}
}
if (newValOp.op != FUNC) {
newValOp.val = INFINITY;//getVarVal(name, varList);
newValOp.ptr = getVarPtr(name, varList);
if (newValOp.ptr == NULL) return doError(2);
newValOp.op = VAL;
}
}
else if (isNum(equation)) {
QString fullNum = QString(equation[0]);
equation.remove(0,1);
if (equation.size() > 0) {
while (isNum(equation)) {
fullNum += equation[0];
equation.remove(0,1);
if (equation.size() == 0) break;
}
}
newValOp.ptr = NULL;
newValOp.val = fullNum.toFloat();
newValOp.op = VAL;
}
else if (isCondition(equation)) {
QString tempCond = QString(equation[0]);
equation.remove(0,1);
if (equation.size() > 0) {
if (isCondition(equation)) {
tempCond += equation[0];
equation.remove(0,1);
}
}
newValOp.op = COND;
newValOp.val = float(getCondVal(tempCond));
if (newValOp.val == ERR) return doError(3);
}
else if (equation[0] == '(') {
newValOp.op = LBRACKET;
newValOp.val = 1;
equation.remove(0,1);
}
else if (equation[0] == ')') {
newValOp.op = RBRACKET;
newValOp.val = 2;
equation.remove(0,1);
}
else if (equation[0] == '&') {
if (equation.size() < 3) {
return doError(4);
}
newValOp.op = BOOL_OP;
equation.remove(0,1);
if (equation[0] != '&') {
return doError(5);
}
newValOp.val = 1;
equation.remove(0,1);