mirror of
https://github.com/aportelli/LatAnalyze.git
synced 2024-09-20 13:35:38 +01:00
746 lines
19 KiB
C++
746 lines
19 KiB
C++
/*
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* MathInterpreter.cpp, part of LatAnalyze 3
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*
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* Copyright (C) 2013 - 2016 Antonin Portelli
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*
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* LatAnalyze 3 is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* LatAnalyze 3 is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with LatAnalyze 3. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <LatAnalyze/Core/MathInterpreter.hpp>
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#include <LatAnalyze/includes.hpp>
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#include <LatAnalyze/Core/Math.hpp>
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using namespace std;
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using namespace Latan;
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/******************************************************************************
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* RunContext implementation *
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******************************************************************************/
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// access //////////////////////////////////////////////////////////////////////
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unsigned int RunContext::addFunction(const string &name, DoubleFunction *init)
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{
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try
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{
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setFunction(name, init);
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return getFunctionAddress(name);
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}
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catch (Exceptions::Definition)
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{
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unsigned int address = fTable_.size();
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fMem_.push_back(init);
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fTable_[name] = address;
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return address;
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}
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}
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unsigned int RunContext::addVariable(const string &name, double init)
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{
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try
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{
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setVariable(name, init);
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return getVariableAddress(name);
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}
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catch (Exceptions::Definition)
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{
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unsigned int address = vTable_.size();
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vMem_.push_back(init);
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vTable_[name] = address;
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return address;
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}
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}
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DoubleFunction * RunContext::getFunction(const string &name) const
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{
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return getFunction(getFunctionAddress(name));
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}
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DoubleFunction * RunContext::getFunction(const unsigned int address) const
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{
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if (address >= fTable_.size())
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{
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LATAN_ERROR(Range, "function address " + strFrom(address)
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+ " out of range");
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return nullptr;
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}
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else
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{
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return fMem_[address];
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}
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}
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unsigned int RunContext::getFunctionAddress(const string &name) const
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{
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try
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{
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return fTable_.at(name);
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}
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catch (out_of_range)
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{
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LATAN_ERROR(Definition, "undefined function '" + name + "'");
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}
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}
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const RunContext::AddressTable & RunContext::getFunctionTable(void) const
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{
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return fTable_;
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}
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unsigned int RunContext::getInsIndex(void) const
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{
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return insIndex_;
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}
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double RunContext::getVariable(const string &name) const
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{
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return getVariable(getVariableAddress(name));
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}
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double RunContext::getVariable(const unsigned int address) const
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{
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if (address >= vTable_.size())
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{
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LATAN_ERROR(Range, "variable address " + strFrom(address)
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+ " out of range");
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return 0.;
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}
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else
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{
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return vMem_[address];
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}
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}
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const RunContext::AddressTable & RunContext::getVariableTable(void) const
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{
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return vTable_;
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}
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unsigned int RunContext::getVariableAddress(const string &name) const
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{
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try
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{
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return vTable_.at(name);
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}
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catch (out_of_range)
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{
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LATAN_ERROR(Definition, "undefined variable '" + name + "'");
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}
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}
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void RunContext::incrementInsIndex(const unsigned int inc)
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{
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setInsIndex(getInsIndex() + inc);
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}
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void RunContext::setFunction(const string &name, DoubleFunction *f)
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{
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setFunction(getFunctionAddress(name), f);
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}
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void RunContext::setFunction(const unsigned int address, DoubleFunction *f)
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{
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if (address >= fTable_.size())
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{
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LATAN_ERROR(Range, "function address " + strFrom(address)
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+ " out of range");
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}
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else
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{
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fMem_[address] = f;
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}
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}
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void RunContext::setInsIndex(const unsigned index)
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{
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insIndex_ = index;
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}
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void RunContext::setVariable(const string &name, const double value)
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{
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setVariable(getVariableAddress(name), value);
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}
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void RunContext::setVariable(const unsigned int address, const double value)
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{
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if (address >= vTable_.size())
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{
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LATAN_ERROR(Range, "variable address " + strFrom(address)
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+ " out of range");
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}
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else
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{
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vMem_[address] = value;
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}
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}
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stack<double> & RunContext::stack(void)
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{
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return dStack_;
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}
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// reset ///////////////////////////////////////////////////////////////////////
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void RunContext::reset(void)
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{
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insIndex_ = 0;
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while (!dStack_.empty())
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{
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dStack_.pop();
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}
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vMem_.clear();
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fMem_.clear();
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vTable_.clear();
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fTable_.clear();
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}
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/******************************************************************************
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* Instruction set *
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******************************************************************************/
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#define CODE_WIDTH 6
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#define CODE_MOD setw(CODE_WIDTH) << left
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// Instruction operator ////////////////////////////////////////////////////////
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ostream &Latan::operator<<(ostream& out, const Instruction& ins)
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{
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ins.print(out);
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return out;
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}
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// Push constructors ///////////////////////////////////////////////////////////
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Push::Push(const double val)
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: type_(ArgType::Constant)
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, val_(val)
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, address_(0)
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, name_("")
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{}
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Push::Push(const unsigned int address, const string &name)
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: type_(ArgType::Variable)
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, val_(0.0)
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, address_(address)
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, name_(name)
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{}
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// Push execution //////////////////////////////////////////////////////////////
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void Push::operator()(RunContext &context) const
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{
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if (type_ == ArgType::Constant)
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{
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context.stack().push(val_);
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}
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else
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{
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context.stack().push(context.getVariable(address_));
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}
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context.incrementInsIndex();
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}
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// Push print //////////////////////////////////////////////////////////////////
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void Push::print(ostream &out) const
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{
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out << CODE_MOD << "push";
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if (type_ == ArgType::Constant)
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{
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out << CODE_MOD << val_;
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}
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else
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{
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out << CODE_MOD << name_ << " @v" << address_;
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}
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}
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// Pop constructor /////////////////////////////////////////////////////////////
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Pop::Pop(const unsigned int address, const string &name)
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: address_(address)
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, name_(name)
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{}
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// Pop execution ///////////////////////////////////////////////////////////////
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void Pop::operator()(RunContext &context) const
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{
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if (!name_.empty())
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{
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context.setVariable(address_, context.stack().top());
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}
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context.stack().pop();
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context.incrementInsIndex();
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}
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// Pop print ///////////////////////////////////////////////////////////////////
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void Pop::print(ostream &out) const
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{
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out << CODE_MOD << "pop" << CODE_MOD << name_ << " @v" << address_;
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}
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// Store constructor ///////////////////////////////////////////////////////////
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Store::Store(const unsigned int address, const string &name)
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: address_(address)
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, name_(name)
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{}
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// Store execution /////////////////////////////////////////////////////////////
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void Store::operator()(RunContext &context) const
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{
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if (!name_.empty())
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{
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context.setVariable(address_, context.stack().top());
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}
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context.incrementInsIndex();
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}
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// Store print /////////////////////////////////////////////////////////////////
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void Store::print(ostream &out) const
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{
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out << CODE_MOD << "store" << CODE_MOD << name_ << " @v" << address_;
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}
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// Call constructor ////////////////////////////////////////////////////////////
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Call::Call(const unsigned int address, const string &name)
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: address_(address)
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, name_(name)
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{}
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// Call execution //////////////////////////////////////////////////////////////
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void Call::operator()(RunContext &context) const
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{
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context.stack().push((*context.getFunction(address_))(context.stack()));
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context.incrementInsIndex();
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}
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// Call print //////////////////////////////////////////////////////////////////
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void Call::print(ostream &out) const
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{
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out << CODE_MOD << "call" << CODE_MOD << name_ << " @f" << address_;
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}
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// Math operations /////////////////////////////////////////////////////////////
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#define DEF_OP(name, nArg, exp, insName)\
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void name::operator()(RunContext &context) const\
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{\
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double x[nArg];\
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for (int i = 0; i < nArg; ++i)\
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{\
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x[nArg-1-i] = context.stack().top();\
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context.stack().pop();\
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}\
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context.stack().push(exp);\
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context.incrementInsIndex();\
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}\
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void name::print(ostream &out) const\
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{\
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out << CODE_MOD << insName;\
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}
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DEF_OP(Neg, 1, -x[0], "neg")
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DEF_OP(Add, 2, x[0] + x[1], "add")
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DEF_OP(Sub, 2, x[0] - x[1], "sub")
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DEF_OP(Mul, 2, x[0]*x[1], "mul")
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DEF_OP(Div, 2, x[0]/x[1], "div")
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DEF_OP(Pow, 2, pow(x[0],x[1]), "pow")
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/******************************************************************************
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* ExprNode implementation *
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******************************************************************************/
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// ExprNode constructors ///////////////////////////////////////////////////////
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ExprNode::ExprNode(const string &name)
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: name_(name)
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, parent_(nullptr)
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{}
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// ExprNode access /////////////////////////////////////////////////////////////
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const string &ExprNode::getName(void) const
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{
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return name_;
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}
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Index ExprNode::getNArg(void) const
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{
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return static_cast<Index>(arg_.size());
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}
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const ExprNode * ExprNode::getParent(void) const
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{
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return parent_;
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}
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Index ExprNode::getLevel(void) const
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{
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if (getParent())
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{
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return getParent()->getLevel() + 1;
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}
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else
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{
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return 0;
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}
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}
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void ExprNode::setName(const std::string &name)
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{
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name_ = name;
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}
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void ExprNode::pushArg(ExprNode *node)
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{
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if (node)
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{
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node->parent_ = this;
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arg_.push_back(unique_ptr<ExprNode>(node));
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}
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}
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// ExprNode operators //////////////////////////////////////////////////////////
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const ExprNode &ExprNode::operator[](const Index i) const
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{
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return *arg_[i];
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}
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ostream &Latan::operator<<(ostream &out, const ExprNode &n)
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{
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Index level = n.getLevel();
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for (Index i = 0; i <= level; ++i)
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{
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if (i == level)
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{
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out << "_";
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}
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else if (i == level - 1)
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{
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out << "|";
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}
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else
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{
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out << " ";
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}
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}
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out << " " << n.getName() << endl;
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for (Index i = 0; i < n.getNArg(); ++i)
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{
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out << n[i];
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}
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return out;
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}
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#define PUSH_INS(program, type, ...)\
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program.push_back(unique_ptr<type>(new type(__VA_ARGS__)))
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#define GET_ADDRESS(address, table, name)\
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try\
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{\
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address = (table).at(name);\
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}\
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catch (out_of_range)\
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{\
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address = (table).size();\
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(table)[(name)] = address;\
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}\
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// VarNode compile /////////////////////////////////////////////////////////////
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void VarNode::compile(Program &program, RunContext &context) const
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{
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PUSH_INS(program, Push, context.getVariableAddress(getName()), getName());
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}
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// CstNode compile /////////////////////////////////////////////////////////////
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void CstNode::compile(Program &program, RunContext &context __dumb) const
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{
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PUSH_INS(program, Push, strTo<double>(getName()));
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}
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// SemicolonNode compile ///////////////////////////////////////////////////////
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void SemicolonNode::compile(Program &program, RunContext &context) const
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{
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auto &n = *this;
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for (Index i = 0; i < getNArg(); ++i)
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{
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bool isAssign = isDerivedFrom<AssignNode>(&n[i]);
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bool isSemiColumn = isDerivedFrom<SemicolonNode>(&n[i]);
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bool isKeyword = isDerivedFrom<KeywordNode>(&n[i]);
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if (isAssign or isSemiColumn or isKeyword)
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{
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n[i].compile(program, context);
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}
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}
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}
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// AssignNode compile //////////////////////////////////////////////////////////
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void AssignNode::compile(Program &program, RunContext &context) const
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{
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auto &n = *this;
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if (isDerivedFrom<VarNode>(&n[0]))
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{
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bool hasSemicolonParent = isDerivedFrom<SemicolonNode>(getParent());
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unsigned int address;
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n[1].compile(program, context);
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address = context.addVariable(n[0].getName());
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if (hasSemicolonParent)
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{
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PUSH_INS(program, Pop, address, n[0].getName());
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}
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else
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{
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PUSH_INS(program, Store, address, n[0].getName());
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}
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}
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else
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{
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LATAN_ERROR(Compilation, "invalid LHS for '='");
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}
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}
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// MathOpNode compile //////////////////////////////////////////////////////////
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#define IFNODE(name, nArg) if ((n.getName() == (name)) and (n.getNArg() == nArg))
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#define ELIFNODE(name, nArg) else IFNODE(name, nArg)
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#define ELSE else
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void MathOpNode::compile(Program &program, RunContext &context) const
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{
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auto &n = *this;
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for (Index i = 0; i < n.getNArg(); ++i)
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{
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n[i].compile(program, context);
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}
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IFNODE("-", 1) PUSH_INS(program, Neg,);
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ELIFNODE("+", 2) PUSH_INS(program, Add,);
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ELIFNODE("-", 2) PUSH_INS(program, Sub,);
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ELIFNODE("*", 2) PUSH_INS(program, Mul,);
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ELIFNODE("/", 2) PUSH_INS(program, Div,);
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ELIFNODE("^", 2) PUSH_INS(program, Pow,);
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ELSE LATAN_ERROR(Compilation, "unknown operator '" + getName() + "'");
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}
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// FuncNode compile ////////////////////////////////////////////////////////////
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void FuncNode::compile(Program &program, RunContext &context) const
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{
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auto &n = *this;
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for (Index i = 0; i < n.getNArg(); ++i)
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{
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n[i].compile(program, context);
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}
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PUSH_INS(program, Call, context.getFunctionAddress(getName()), getName());
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}
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// ReturnNode compile ////////////////////////////////////////////////////////////
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void ReturnNode::compile(Program &program, RunContext &context) const
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{
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auto &n = *this;
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n[0].compile(program, context);
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program.push_back(nullptr);
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}
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|
|
/******************************************************************************
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|
* MathInterpreter implementation *
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******************************************************************************/
|
|
// MathParserState constructor /////////////////////////////////////////////////
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|
MathInterpreter::MathParserState::MathParserState
|
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(istream *stream, string *name, std::unique_ptr<ExprNode> *data)
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: ParserState<std::unique_ptr<ExprNode>>(stream, name, data)
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{
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initScanner();
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}
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|
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// MathParserState destructor //////////////////////////////////////////////////
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MathInterpreter::MathParserState::~MathParserState(void)
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{
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destroyScanner();
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}
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|
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// constructors ////////////////////////////////////////////////////////////////
|
|
MathInterpreter::MathInterpreter(const std::string &code)
|
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: codeName_("<string>")
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{
|
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setCode(code);
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}
|
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|
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// access //////////////////////////////////////////////////////////////////////
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const Instruction * MathInterpreter::operator[](const Index i) const
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{
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return program_[i].get();
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}
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const ExprNode * MathInterpreter::getAST(void) const
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{
|
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return root_.get();
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}
|
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void MathInterpreter::push(const Instruction *i)
|
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{
|
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program_.push_back(unique_ptr<const Instruction>(i));
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}
|
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|
|
// initialization //////////////////////////////////////////////////////////////
|
|
void MathInterpreter::setCode(const std::string &code)
|
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{
|
|
if (status_)
|
|
{
|
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reset();
|
|
}
|
|
code_.reset(new stringstream(code));
|
|
codeName_ = "<string>";
|
|
state_.reset(new MathParserState(code_.get(), &codeName_, &root_));
|
|
program_.clear();
|
|
status_ = Status::initialised;
|
|
}
|
|
|
|
void MathInterpreter::reset(void)
|
|
{
|
|
code_.reset();
|
|
codeName_ = "<no_code>";
|
|
state_.reset();
|
|
root_.reset();
|
|
program_.clear();
|
|
status_ = 0;
|
|
}
|
|
|
|
// parser //////////////////////////////////////////////////////////////////////
|
|
|
|
// Bison/Flex parser declaration
|
|
int _math_parse(MathInterpreter::MathParserState *state);
|
|
|
|
void MathInterpreter::parse(void)
|
|
{
|
|
_math_parse(state_.get());
|
|
}
|
|
|
|
// interpreter /////////////////////////////////////////////////////////////////
|
|
#define ADD_FUNC(context, func)\
|
|
(context).addFunction(#func, &STDMATH_NAMESPACE::func);\
|
|
|
|
#define ADD_STDMATH_FUNCS(context)\
|
|
ADD_FUNC(context, cos);\
|
|
ADD_FUNC(context, sin);\
|
|
ADD_FUNC(context, tan);\
|
|
ADD_FUNC(context, acos);\
|
|
ADD_FUNC(context, asin);\
|
|
ADD_FUNC(context, atan);\
|
|
ADD_FUNC(context, atan2);\
|
|
ADD_FUNC(context, cosh);\
|
|
ADD_FUNC(context, sinh);\
|
|
ADD_FUNC(context, tanh);\
|
|
ADD_FUNC(context, acosh);\
|
|
ADD_FUNC(context, asinh);\
|
|
ADD_FUNC(context, atanh);\
|
|
ADD_FUNC(context, exp);\
|
|
ADD_FUNC(context, log);\
|
|
ADD_FUNC(context, log10);\
|
|
ADD_FUNC(context, exp2);\
|
|
ADD_FUNC(context, expm1);\
|
|
ADD_FUNC(context, log1p);\
|
|
ADD_FUNC(context, log2);\
|
|
ADD_FUNC(context, pow);\
|
|
ADD_FUNC(context, sqrt);\
|
|
ADD_FUNC(context, cbrt);\
|
|
ADD_FUNC(context, hypot);\
|
|
ADD_FUNC(context, erf);\
|
|
ADD_FUNC(context, erfc);\
|
|
ADD_FUNC(context, tgamma);\
|
|
ADD_FUNC(context, lgamma);\
|
|
ADD_FUNC(context, ceil);\
|
|
ADD_FUNC(context, floor);\
|
|
ADD_FUNC(context, fmod);\
|
|
ADD_FUNC(context, trunc);\
|
|
ADD_FUNC(context, round);\
|
|
ADD_FUNC(context, rint);\
|
|
ADD_FUNC(context, nearbyint);\
|
|
ADD_FUNC(context, remainder);\
|
|
ADD_FUNC(context, fdim);\
|
|
ADD_FUNC(context, fmax);\
|
|
ADD_FUNC(context, fmin);\
|
|
ADD_FUNC(context, fabs);
|
|
|
|
void MathInterpreter::compile(RunContext &context)
|
|
{
|
|
bool gotReturn = false;
|
|
|
|
if (!(status_ & Status::parsed))
|
|
{
|
|
parse();
|
|
status_ |= Status::parsed;
|
|
status_ -= status_ & Status::compiled;
|
|
}
|
|
if (!(status_ & Status::compiled))
|
|
{
|
|
if (root_)
|
|
{
|
|
context.addVariable("pi", Math::pi);
|
|
context.addVariable("inf", Math::inf);
|
|
ADD_STDMATH_FUNCS(context);
|
|
root_->compile(program_, context);
|
|
for (unsigned int i = 0; i < program_.size(); ++i)
|
|
{
|
|
if (!program_[i])
|
|
{
|
|
gotReturn = true;
|
|
program_.resize(i);
|
|
program_.shrink_to_fit();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (!root_ or !gotReturn)
|
|
{
|
|
LATAN_ERROR(Syntax, "expected 'return' in program '" + codeName_
|
|
+ "'");
|
|
}
|
|
status_ |= Status::compiled;
|
|
}
|
|
}
|
|
|
|
|
|
// execution ///////////////////////////////////////////////////////////////////
|
|
void MathInterpreter::operator()(RunContext &context)
|
|
{
|
|
if (!(status_ & Status::compiled))
|
|
{
|
|
compile(context);
|
|
}
|
|
execute(context);
|
|
}
|
|
|
|
void MathInterpreter::execute(RunContext &context) const
|
|
{
|
|
context.setInsIndex(0);
|
|
while (context.getInsIndex() != program_.size())
|
|
{
|
|
(*(program_[context.getInsIndex()]))(context);
|
|
}
|
|
}
|
|
|
|
// IO //////////////////////////////////////////////////////////////////////////
|
|
ostream &Latan::operator<<(ostream &out, const MathInterpreter &program)
|
|
{
|
|
for (unsigned int i = 0; i < program.program_.size(); ++i)
|
|
{
|
|
out << *(program.program_[i]) << endl;
|
|
}
|
|
|
|
return out;
|
|
}
|