preprocessor/src/macro/Directives.cc

307 lines
8.4 KiB
C++

/*
* Copyright © 2019-2021 Dynare Team
*
* This file is part of Dynare.
*
* Dynare 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.
*
* Dynare 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 Dynare. If not, see <https://www.gnu.org/licenses/>.
*/
#include "Directives.hh"
#include "Driver.hh"
#include <fstream>
using namespace macro;
void
Eval::interpret(ostream &output, Environment &env, vector<filesystem::path> &paths)
{
try
{
output << expr->eval(env)->to_string();
}
catch (StackTrace &ex)
{
ex.push("Evaluation", location);
error(ex);
}
catch (exception &e)
{
error(StackTrace("Evaluation", e.what(), location));
}
}
void
Include::interpret(ostream &output, Environment &env, vector<filesystem::path> &paths)
{
using namespace filesystem;
try
{
StringPtr msp = dynamic_pointer_cast<String>(expr->eval(env));
if (!msp)
throw StackTrace("File name does not evaluate to a string");
path filename = msp->to_string();
ifstream incfile(filename, ios::binary);
if (incfile.fail())
{
for (const auto &dir : paths)
{
incfile = ifstream(dir / filename, ios::binary);
if (incfile.good())
break;
}
if (incfile.fail())
{
ostringstream errmsg;
errmsg << " * " << current_path().string() << endl;
for (const auto &dir : paths)
errmsg << " * " << absolute(dir).string() << endl;
error(StackTrace("@#includepath", "Could not open " + filename.string()
+". The following directories were searched:\n" + errmsg.str(), location));
}
}
Driver m;
// Calling `string()` method on filename and filename.stem() because of bug in
// MinGW 8.3.0 that ignores implicit conversion to string from filename::path.
// Test if bug exists when version of MinGW is upgraded on Debian runners
m.parse(filename.string(), filename.stem().string(), incfile, false, {}, env, paths, output);
}
catch (StackTrace &ex)
{
ex.push("@#include", location);
error(ex);
}
catch (exception &e)
{
error(StackTrace("@#include", e.what(), location));
}
printLineInfo(output);
}
void
IncludePath::interpret(ostream &output, Environment &env, vector<filesystem::path> &paths)
{
using namespace filesystem;
try
{
StringPtr msp = dynamic_pointer_cast<String>(expr->eval(env));
if (!msp)
throw StackTrace("File name does not evaluate to a string");
path ip = static_cast<string>(*msp);
if (!is_directory(ip))
throw StackTrace(ip.string() + " does not evaluate to a valid directory");
if (!exists(ip))
warning(StackTrace("@#includepath", ip.string() + " does not exist", location));
paths.emplace_back(ip);
}
catch (StackTrace &ex)
{
ex.push("@#includepath", location);
error(ex);
}
catch (exception &e)
{
error(StackTrace("@#includepath", e.what(), location));
}
}
void
Define::interpret(ostream &output, Environment &env, vector<filesystem::path> &paths)
{
try
{
if (var)
env.define(var, value);
else if (func)
env.define(func, value);
else
throw StackTrace("LHS of can be either a variable or a function");
}
catch (StackTrace &ex)
{
ex.push("@#define", location);
error(ex);
}
catch (exception &e)
{
error(StackTrace("@#define", e.what(), location));
}
}
void
Echo::interpret(ostream &output, Environment &env, vector<filesystem::path> &paths)
{
try
{
cout << "@#echo (" << getLocation() << "): " << expr->eval(env)->to_string() << endl;
}
catch (StackTrace &ex)
{
ex.push("@#echo", location);
error(ex);
}
catch (exception &e)
{
error(StackTrace("@#echo", e.what(), location));
}
printEndLineInfo(output);
}
void
Error::interpret(ostream &output, Environment &env, vector<filesystem::path> &paths)
{
try
{
throw StackTrace(expr->eval(env)->to_string());
}
catch (StackTrace &ex)
{
ex.push("@#error", location);
error(ex);
}
catch (exception &e)
{
error(StackTrace("@#error", e.what(), location));
}
}
void
EchoMacroVars::interpret(ostream &output, Environment &env, vector<filesystem::path> &paths)
{
if (save)
env.print(output, vars, location.begin.line, true);
else
env.print(cout, vars);
printEndLineInfo(output);
}
void
For::interpret(ostream &output, Environment &env, vector<filesystem::path> &paths)
{
ArrayPtr ap;
try
{
ap = dynamic_pointer_cast<Array>(index_vals->eval(env));
if (!ap)
throw StackTrace("The index must loop through an array");
}
catch (StackTrace &ex)
{
ex.push("@#for", location);
error(ex);
}
catch (exception &e)
{
error(StackTrace("@#for", e.what(), location));
}
for (size_t i = 0; i < ap->size(); i++)
{
if (index_vec.size() == 1)
env.define(index_vec.at(0), ap->at(i));
else
{
BaseTypePtr btp = dynamic_pointer_cast<BaseType>(ap->at(i));
if (!btp)
error(StackTrace("@#for", "Unexpected error encountered in for loop", location));
if (btp->getType() == codes::BaseType::Tuple)
{
TuplePtr mtp = dynamic_pointer_cast<Tuple>(btp);
if (index_vec.size() != mtp->size())
error(StackTrace("@#for", "Encountered tuple of size " + to_string(mtp->size())
+ " but only have " + to_string(index_vec.size()) + " index variables", location));
else
for (size_t j = 0; j < index_vec.size(); j++)
env.define(index_vec.at(j), mtp->at(j));
}
}
bool printLine = true;
for (const auto &statement : statements)
{
if (printLine)
{
statement->printLineInfo(output);
printLine = false;
}
statement->interpret(output, env, paths);
}
}
printEndLineInfo(output);
}
void
If::interpret(ostream &output, Environment &env, vector<filesystem::path> &paths)
{
bool first_clause = true;
for (const auto & [expr, body] : expr_and_body)
try
{
if ((ifdef || ifndef) && first_clause)
{
first_clause = false;
VariablePtr vp = dynamic_pointer_cast<Variable>(expr);
if (!vp)
error(StackTrace(ifdef ? "@#ifdef" : "@#ifndef",
"The condition must be a variable name", location));
if ((ifdef && env.isVariableDefined(vp->getName()))
|| (ifndef && !env.isVariableDefined(vp->getName())))
{
interpretBody(body, output, env, paths);
break;
}
}
else
{
auto tmp = expr->eval(env);
RealPtr dp = dynamic_pointer_cast<Real>(tmp);
BoolPtr bp = dynamic_pointer_cast<Bool>(tmp);
if (!bp && !dp)
error(StackTrace("@#if",
"The condition must evaluate to a boolean or a double", location));
if ((bp && *bp) || (dp && *dp))
{
interpretBody(body, output, env, paths);
break;
}
}
}
catch (StackTrace &ex)
{
ex.push("@#if", location);
error(ex);
}
catch (exception &e)
{
error(StackTrace("@#if", e.what(), location));
}
printEndLineInfo(output);
}
void
If::interpretBody(const vector<DirectivePtr> &body, ostream &output, Environment &env, vector<filesystem::path> &paths)
{
bool printLine = true;
for (const auto &statement : body)
{
if (printLine)
{
statement->printLineInfo(output);
printLine = false;
}
statement->interpret(output, env, paths);
}
}