1217 lines
58 KiB
C++
1217 lines
58 KiB
C++
#include "PlaceholderParser.hpp"
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#include <cstring>
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#include <ctime>
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#include <iomanip>
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#include <sstream>
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#include <map>
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#ifdef _MSC_VER
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#include <stdlib.h> // provides **_environ
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#else
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#include <unistd.h> // provides **environ
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#endif
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#ifdef __APPLE__
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#include <crt_externs.h>
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#undef environ
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#define environ (*_NSGetEnviron())
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#else
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#ifdef _MSC_VER
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#define environ _environ
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#else
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extern char **environ;
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#endif
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#endif
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#include <boost/algorithm/string.hpp>
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// Spirit v2.5 allows you to suppress automatic generation
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// of predefined terminals to speed up complation. With
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// BOOST_SPIRIT_NO_PREDEFINED_TERMINALS defined, you are
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// responsible in creating instances of the terminals that
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// you need (e.g. see qi::uint_type uint_ below).
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//#define BOOST_SPIRIT_NO_PREDEFINED_TERMINALS
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#define BOOST_RESULT_OF_USE_DECLTYPE
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#define BOOST_SPIRIT_USE_PHOENIX_V3
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#include <boost/config/warning_disable.hpp>
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#include <boost/lexical_cast.hpp>
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#include <boost/spirit/include/qi.hpp>
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#include <boost/spirit/include/qi_lit.hpp>
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#include <boost/spirit/include/phoenix_core.hpp>
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#include <boost/spirit/include/phoenix_operator.hpp>
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#include <boost/spirit/include/phoenix_fusion.hpp>
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#include <boost/spirit/include/phoenix_stl.hpp>
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#include <boost/spirit/include/phoenix_object.hpp>
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#include <boost/fusion/include/adapt_struct.hpp>
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#include <boost/spirit/repository/include/qi_distinct.hpp>
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#include <boost/spirit/repository/include/qi_iter_pos.hpp>
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#include <boost/variant/recursive_variant.hpp>
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#include <boost/phoenix/bind/bind_function.hpp>
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#include <iostream>
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#include <string>
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// #define USE_CPP11_REGEX
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#ifdef USE_CPP11_REGEX
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#include <regex>
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#define SLIC3R_REGEX_NAMESPACE std
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#else /* USE_CPP11_REGEX */
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#include <boost/regex.hpp>
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#define SLIC3R_REGEX_NAMESPACE boost
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#endif /* USE_CPP11_REGEX */
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namespace Slic3r {
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PlaceholderParser::PlaceholderParser()
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{
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this->set("version", std::string(SLIC3R_VERSION));
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this->apply_env_variables();
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this->update_timestamp();
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}
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void PlaceholderParser::update_timestamp()
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{
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time_t rawtime;
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time(&rawtime);
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struct tm* timeinfo = localtime(&rawtime);
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{
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std::ostringstream ss;
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ss << (1900 + timeinfo->tm_year);
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ss << std::setw(2) << std::setfill('0') << (1 + timeinfo->tm_mon);
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ss << std::setw(2) << std::setfill('0') << timeinfo->tm_mday;
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ss << "-";
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ss << std::setw(2) << std::setfill('0') << timeinfo->tm_hour;
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ss << std::setw(2) << std::setfill('0') << timeinfo->tm_min;
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ss << std::setw(2) << std::setfill('0') << timeinfo->tm_sec;
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this->set("timestamp", ss.str());
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}
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this->set("year", 1900 + timeinfo->tm_year);
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this->set("month", 1 + timeinfo->tm_mon);
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this->set("day", timeinfo->tm_mday);
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this->set("hour", timeinfo->tm_hour);
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this->set("minute", timeinfo->tm_min);
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this->set("second", timeinfo->tm_sec);
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}
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// Scalar configuration values are stored into m_single,
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// vector configuration values are stored into m_multiple.
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// All vector configuration values stored into the PlaceholderParser
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// are expected to be addressed by the extruder ID, therefore
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// if a vector configuration value is addressed without an index,
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// a current extruder ID is used.
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void PlaceholderParser::apply_config(const DynamicPrintConfig &rhs)
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{
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const ConfigDef *def = rhs.def();
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for (const t_config_option_key &opt_key : rhs.keys()) {
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const ConfigOptionDef *opt_def = def->get(opt_key);
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if ((opt_def->multiline && boost::ends_with(opt_key, "_gcode")) || opt_key == "post_process")
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continue;
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const ConfigOption *opt = rhs.option(opt_key);
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// Store a copy of the config option.
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// Convert FloatOrPercent values to floats first.
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//FIXME there are some ratio_over chains, which end with empty ratio_with.
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// For example, XXX_extrusion_width parameters are not handled by get_abs_value correctly.
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this->set(opt_key, (opt->type() == coFloatOrPercent) ?
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new ConfigOptionFloat(rhs.get_abs_value(opt_key)) :
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opt->clone());
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}
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}
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void PlaceholderParser::apply_env_variables()
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{
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for (char** env = environ; *env; ++ env) {
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if (strncmp(*env, "SLIC3R_", 7) == 0) {
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std::stringstream ss(*env);
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std::string key, value;
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std::getline(ss, key, '=');
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ss >> value;
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this->set(key, value);
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}
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}
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}
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namespace spirit = boost::spirit;
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namespace qi = boost::spirit::qi;
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namespace px = boost::phoenix;
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namespace client
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{
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template<typename Iterator>
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struct OptWithPos {
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OptWithPos() {}
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OptWithPos(ConfigOptionConstPtr opt, boost::iterator_range<Iterator> it_range) : opt(opt), it_range(it_range) {}
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ConfigOptionConstPtr opt = nullptr;
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boost::iterator_range<Iterator> it_range;
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};
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template<typename ITERATOR>
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std::ostream& operator<<(std::ostream& os, OptWithPos<ITERATOR> const& opt)
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{
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os << std::string(opt.it_range.begin(), opt.it_range.end());
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return os;
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}
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template<typename Iterator>
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struct expr
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{
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expr() : type(TYPE_EMPTY) {}
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explicit expr(bool b) : type(TYPE_BOOL) { data.b = b; }
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explicit expr(bool b, const Iterator &it_begin, const Iterator &it_end) : type(TYPE_BOOL), it_range(it_begin, it_end) { data.b = b; }
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explicit expr(int i) : type(TYPE_INT) { data.i = i; }
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explicit expr(int i, const Iterator &it_begin, const Iterator &it_end) : type(TYPE_INT), it_range(it_begin, it_end) { data.i = i; }
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explicit expr(double d) : type(TYPE_DOUBLE) { data.d = d; }
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explicit expr(double d, const Iterator &it_begin, const Iterator &it_end) : type(TYPE_DOUBLE), it_range(it_begin, it_end) { data.d = d; }
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explicit expr(const char *s) : type(TYPE_STRING) { data.s = new std::string(s); }
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explicit expr(const std::string &s) : type(TYPE_STRING) { data.s = new std::string(s); }
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explicit expr(const std::string &s, const Iterator &it_begin, const Iterator &it_end) :
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type(TYPE_STRING), it_range(it_begin, it_end) { data.s = new std::string(s); }
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expr(const expr &rhs) : type(rhs.type), it_range(rhs.it_range)
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{ if (rhs.type == TYPE_STRING) data.s = new std::string(*rhs.data.s); else data.set(rhs.data); }
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explicit expr(expr &&rhs) : type(rhs.type), it_range(rhs.it_range)
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{ data.set(rhs.data); rhs.type = TYPE_EMPTY; }
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explicit expr(expr &&rhs, const Iterator &it_begin, const Iterator &it_end) : type(rhs.type), it_range(it_begin, it_end)
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{ data.set(rhs.data); rhs.type = TYPE_EMPTY; }
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~expr() { this->reset(); }
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expr &operator=(const expr &rhs)
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{
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this->type = rhs.type;
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this->it_range = rhs.it_range;
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if (rhs.type == TYPE_STRING)
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this->data.s = new std::string(*rhs.data.s);
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else
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this->data.set(rhs.data);
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return *this;
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}
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expr &operator=(expr &&rhs)
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{
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type = rhs.type;
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this->it_range = rhs.it_range;
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data.set(rhs.data);
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rhs.type = TYPE_EMPTY;
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return *this;
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}
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void reset()
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{
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if (this->type == TYPE_STRING)
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delete data.s;
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this->type = TYPE_EMPTY;
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}
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bool& b() { return data.b; }
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bool b() const { return data.b; }
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void set_b(bool v) { this->reset(); this->data.b = v; this->type = TYPE_BOOL; }
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int& i() { return data.i; }
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int i() const { return data.i; }
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void set_i(int v) { this->reset(); this->data.i = v; this->type = TYPE_INT; }
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int as_i() const { return (this->type == TYPE_INT) ? this->i() : int(this->d()); }
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double& d() { return data.d; }
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double d() const { return data.d; }
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void set_d(double v) { this->reset(); this->data.d = v; this->type = TYPE_DOUBLE; }
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double as_d() const { return (this->type == TYPE_DOUBLE) ? this->d() : double(this->i()); }
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std::string& s() { return *data.s; }
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const std::string& s() const { return *data.s; }
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void set_s(const std::string &s) { this->reset(); this->data.s = new std::string(s); this->type = TYPE_STRING; }
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void set_s(std::string &&s) { this->reset(); this->data.s = new std::string(std::move(s)); this->type = TYPE_STRING; }
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std::string to_string() const
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{
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std::string out;
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switch (type) {
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case TYPE_BOOL: out = boost::to_string(data.b); break;
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case TYPE_INT: out = boost::to_string(data.i); break;
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case TYPE_DOUBLE: out = boost::to_string(data.d); break;
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case TYPE_STRING: out = *data.s; break;
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default: break;
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}
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return out;
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}
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union Data {
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// Raw image of the other data members.
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// The C++ compiler will consider a possible aliasing of char* with any other union member,
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// therefore copying the raw data is safe.
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char raw[8];
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bool b;
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int i;
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double d;
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std::string *s;
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// Copy the largest member variable through char*, which will alias with all other union members by default.
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void set(const Data &rhs) { memcpy(this->raw, rhs.raw, sizeof(rhs.raw)); }
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} data;
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enum Type {
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TYPE_EMPTY = 0,
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TYPE_BOOL,
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TYPE_INT,
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TYPE_DOUBLE,
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TYPE_STRING,
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};
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Type type;
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// Range of input iterators covering this expression.
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// Used for throwing parse exceptions.
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boost::iterator_range<Iterator> it_range;
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expr unary_minus(const Iterator start_pos) const
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{
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switch (this->type) {
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case TYPE_INT :
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return expr<Iterator>(- this->i(), start_pos, this->it_range.end());
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case TYPE_DOUBLE:
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return expr<Iterator>(- this->d(), start_pos, this->it_range.end());
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default:
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this->throw_exception("Cannot apply unary minus operator.");
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}
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assert(false);
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// Suppress compiler warnings.
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return expr();
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}
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expr unary_not(const Iterator start_pos) const
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{
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switch (this->type) {
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case TYPE_BOOL :
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return expr<Iterator>(! this->b(), start_pos, this->it_range.end());
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default:
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this->throw_exception("Cannot apply a not operator.");
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}
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assert(false);
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// Suppress compiler warnings.
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return expr();
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}
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expr &operator+=(const expr &rhs)
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{
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if (this->type == TYPE_STRING) {
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// Convert the right hand side to string and append.
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*this->data.s += rhs.to_string();
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} else if (rhs.type == TYPE_STRING) {
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// Conver the left hand side to string, append rhs.
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this->data.s = new std::string(this->to_string() + rhs.s());
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this->type = TYPE_STRING;
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} else {
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const char *err_msg = "Cannot add non-numeric types.";
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this->throw_if_not_numeric(err_msg);
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rhs.throw_if_not_numeric(err_msg);
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if (this->type == TYPE_DOUBLE || rhs.type == TYPE_DOUBLE) {
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double d = this->as_d() + rhs.as_d();
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this->data.d = d;
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this->type = TYPE_DOUBLE;
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} else
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this->data.i += rhs.i();
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}
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this->it_range = boost::iterator_range<Iterator>(this->it_range.begin(), rhs.it_range.end());
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return *this;
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}
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expr &operator-=(const expr &rhs)
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{
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const char *err_msg = "Cannot subtract non-numeric types.";
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this->throw_if_not_numeric(err_msg);
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rhs.throw_if_not_numeric(err_msg);
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if (this->type == TYPE_DOUBLE || rhs.type == TYPE_DOUBLE) {
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double d = this->as_d() - rhs.as_d();
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this->data.d = d;
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this->type = TYPE_DOUBLE;
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} else
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this->data.i -= rhs.i();
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this->it_range = boost::iterator_range<Iterator>(this->it_range.begin(), rhs.it_range.end());
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return *this;
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}
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expr &operator*=(const expr &rhs)
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{
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const char *err_msg = "Cannot multiply with non-numeric type.";
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this->throw_if_not_numeric(err_msg);
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rhs.throw_if_not_numeric(err_msg);
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if (this->type == TYPE_DOUBLE || rhs.type == TYPE_DOUBLE) {
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double d = this->as_d() * rhs.as_d();
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this->data.d = d;
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this->type = TYPE_DOUBLE;
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} else
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this->data.i *= rhs.i();
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this->it_range = boost::iterator_range<Iterator>(this->it_range.begin(), rhs.it_range.end());
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return *this;
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}
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expr &operator/=(const expr &rhs)
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{
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this->throw_if_not_numeric("Cannot divide a non-numeric type.");
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rhs.throw_if_not_numeric("Cannot divide with a non-numeric type.");
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if ((this->type == TYPE_INT) ? (rhs.i() == 0) : (rhs.d() == 0.))
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rhs.throw_exception("Division by zero");
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if (this->type == TYPE_DOUBLE || rhs.type == TYPE_DOUBLE) {
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double d = this->as_d() / rhs.as_d();
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this->data.d = d;
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this->type = TYPE_DOUBLE;
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} else
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this->data.i /= rhs.i();
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this->it_range = boost::iterator_range<Iterator>(this->it_range.begin(), rhs.it_range.end());
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return *this;
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}
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static void to_string2(expr &self, std::string &out)
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{
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out = self.to_string();
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}
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static void evaluate_boolean(expr &self, bool &out)
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{
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if (self.type != TYPE_BOOL)
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self.throw_exception("Not a boolean expression");
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out = self.b();
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}
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static void evaluate_boolean_to_string(expr &self, std::string &out)
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{
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if (self.type != TYPE_BOOL)
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self.throw_exception("Not a boolean expression");
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out = self.b() ? "true" : "false";
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}
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// Is lhs==rhs? Store the result into lhs.
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static void compare_op(expr &lhs, expr &rhs, char op, bool invert)
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{
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bool value = false;
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if ((lhs.type == TYPE_INT || lhs.type == TYPE_DOUBLE) &&
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(rhs.type == TYPE_INT || rhs.type == TYPE_DOUBLE)) {
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// Both types are numeric.
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switch (op) {
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case '=':
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value = (lhs.type == TYPE_DOUBLE || rhs.type == TYPE_DOUBLE) ?
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(std::abs(lhs.as_d() - rhs.as_d()) < 1e-8) : (lhs.i() == rhs.i());
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break;
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case '<':
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value = (lhs.type == TYPE_DOUBLE || rhs.type == TYPE_DOUBLE) ?
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(lhs.as_d() < rhs.as_d()) : (lhs.i() < rhs.i());
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break;
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case '>':
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default:
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value = (lhs.type == TYPE_DOUBLE || rhs.type == TYPE_DOUBLE) ?
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(lhs.as_d() > rhs.as_d()) : (lhs.i() > rhs.i());
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break;
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}
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} else if (lhs.type == TYPE_BOOL && rhs.type == TYPE_BOOL) {
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// Both type are bool.
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if (op != '=')
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boost::throw_exception(qi::expectation_failure<Iterator>(
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lhs.it_range.begin(), rhs.it_range.end(), spirit::info("*Cannot compare the types.")));
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value = lhs.b() == rhs.b();
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} else if (lhs.type == TYPE_STRING || rhs.type == TYPE_STRING) {
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// One type is string, the other could be converted to string.
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value = (op == '=') ? (lhs.to_string() == rhs.to_string()) :
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(op == '<') ? (lhs.to_string() < rhs.to_string()) : (lhs.to_string() > rhs.to_string());
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} else {
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boost::throw_exception(qi::expectation_failure<Iterator>(
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lhs.it_range.begin(), rhs.it_range.end(), spirit::info("*Cannot compare the types.")));
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}
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lhs.type = TYPE_BOOL;
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lhs.data.b = invert ? ! value : value;
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}
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// Compare operators, store the result into lhs.
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static void equal (expr &lhs, expr &rhs) { compare_op(lhs, rhs, '=', false); }
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static void not_equal(expr &lhs, expr &rhs) { compare_op(lhs, rhs, '=', true ); }
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static void lower (expr &lhs, expr &rhs) { compare_op(lhs, rhs, '<', false); }
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static void greater (expr &lhs, expr &rhs) { compare_op(lhs, rhs, '>', false); }
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static void leq (expr &lhs, expr &rhs) { compare_op(lhs, rhs, '>', true ); }
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static void geq (expr &lhs, expr &rhs) { compare_op(lhs, rhs, '<', true ); }
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enum Function2ParamsType {
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FUNCTION_MIN,
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FUNCTION_MAX,
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};
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// Store the result into param1.
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static void function_2params(expr ¶m1, expr ¶m2, Function2ParamsType fun)
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{
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const char *err_msg = "Not a numeric type.";
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param1.throw_if_not_numeric(err_msg);
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param2.throw_if_not_numeric(err_msg);
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if (param1.type == TYPE_DOUBLE || param2.type == TYPE_DOUBLE) {
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double d = 0.;
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switch (fun) {
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case FUNCTION_MIN: d = std::min(param1.as_d(), param2.as_d()); break;
|
|
case FUNCTION_MAX: d = std::max(param1.as_d(), param2.as_d()); break;
|
|
default: param1.throw_exception("Internal error: invalid function");
|
|
}
|
|
param1.data.d = d;
|
|
param1.type = TYPE_DOUBLE;
|
|
} else {
|
|
int i = 0.;
|
|
switch (fun) {
|
|
case FUNCTION_MIN: i = std::min(param1.as_i(), param2.as_i()); break;
|
|
case FUNCTION_MAX: i = std::max(param1.as_i(), param2.as_i()); break;
|
|
default: param1.throw_exception("Internal error: invalid function");
|
|
}
|
|
param1.data.i = i;
|
|
param1.type = TYPE_INT;
|
|
}
|
|
}
|
|
// Store the result into param1.
|
|
static void min(expr ¶m1, expr ¶m2) { function_2params(param1, param2, FUNCTION_MIN); }
|
|
static void max(expr ¶m1, expr ¶m2) { function_2params(param1, param2, FUNCTION_MAX); }
|
|
|
|
static void regex_op(expr &lhs, boost::iterator_range<Iterator> &rhs, char op)
|
|
{
|
|
const std::string *subject = nullptr;
|
|
const std::string *mask = nullptr;
|
|
if (lhs.type == TYPE_STRING) {
|
|
// One type is string, the other could be converted to string.
|
|
subject = &lhs.s();
|
|
} else {
|
|
lhs.throw_exception("Left hand side of a regex match must be a string.");
|
|
}
|
|
try {
|
|
std::string pattern(++ rhs.begin(), -- rhs.end());
|
|
bool result = SLIC3R_REGEX_NAMESPACE::regex_match(*subject, SLIC3R_REGEX_NAMESPACE::regex(pattern));
|
|
if (op == '!')
|
|
result = ! result;
|
|
lhs.reset();
|
|
lhs.type = TYPE_BOOL;
|
|
lhs.data.b = result;
|
|
} catch (SLIC3R_REGEX_NAMESPACE::regex_error &ex) {
|
|
// Syntax error in the regular expression
|
|
boost::throw_exception(qi::expectation_failure<Iterator>(
|
|
rhs.begin(), rhs.end(), spirit::info(std::string("*Regular expression compilation failed: ") + ex.what())));
|
|
}
|
|
}
|
|
|
|
static void regex_matches (expr &lhs, boost::iterator_range<Iterator> &rhs) { return regex_op(lhs, rhs, '='); }
|
|
static void regex_doesnt_match(expr &lhs, boost::iterator_range<Iterator> &rhs) { return regex_op(lhs, rhs, '!'); }
|
|
|
|
static void logical_op(expr &lhs, expr &rhs, char op)
|
|
{
|
|
bool value = false;
|
|
if (lhs.type == TYPE_BOOL && rhs.type == TYPE_BOOL) {
|
|
value = (op == '|') ? (lhs.b() || rhs.b()) : (lhs.b() && rhs.b());
|
|
} else {
|
|
boost::throw_exception(qi::expectation_failure<Iterator>(
|
|
lhs.it_range.begin(), rhs.it_range.end(), spirit::info("*Cannot apply logical operation to non-boolean operators.")));
|
|
}
|
|
lhs.type = TYPE_BOOL;
|
|
lhs.data.b = value;
|
|
}
|
|
static void logical_or (expr &lhs, expr &rhs) { logical_op(lhs, rhs, '|'); }
|
|
static void logical_and(expr &lhs, expr &rhs) { logical_op(lhs, rhs, '&'); }
|
|
|
|
static void ternary_op(expr &lhs, expr &rhs1, expr &rhs2)
|
|
{
|
|
bool value = false;
|
|
if (lhs.type != TYPE_BOOL)
|
|
lhs.throw_exception("Not a boolean expression");
|
|
if (lhs.b())
|
|
lhs = std::move(rhs1);
|
|
else
|
|
lhs = std::move(rhs2);
|
|
}
|
|
|
|
static void set_if(bool &cond, bool ¬_yet_consumed, std::string &str_in, std::string &str_out)
|
|
{
|
|
if (cond && not_yet_consumed) {
|
|
str_out = str_in;
|
|
not_yet_consumed = false;
|
|
}
|
|
}
|
|
|
|
void throw_exception(const char *message) const
|
|
{
|
|
boost::throw_exception(qi::expectation_failure<Iterator>(
|
|
this->it_range.begin(), this->it_range.end(), spirit::info(std::string("*") + message)));
|
|
}
|
|
|
|
void throw_if_not_numeric(const char *message) const
|
|
{
|
|
if (this->type != TYPE_INT && this->type != TYPE_DOUBLE)
|
|
this->throw_exception(message);
|
|
}
|
|
};
|
|
|
|
template<typename ITERATOR>
|
|
std::ostream& operator<<(std::ostream &os, const expr<ITERATOR> &expression)
|
|
{
|
|
typedef expr<ITERATOR> Expr;
|
|
os << std::string(expression.it_range.begin(), expression.it_range.end()) << " - ";
|
|
switch (expression.type) {
|
|
case Expr::TYPE_EMPTY: os << "empty"; break;
|
|
case Expr::TYPE_BOOL: os << "bool (" << expression.b() << ")"; break;
|
|
case Expr::TYPE_INT: os << "int (" << expression.i() << ")"; break;
|
|
case Expr::TYPE_DOUBLE: os << "double (" << expression.d() << ")"; break;
|
|
case Expr::TYPE_STRING: os << "string (" << expression.s() << ")"; break;
|
|
default: os << "unknown";
|
|
};
|
|
return os;
|
|
}
|
|
|
|
struct MyContext {
|
|
const DynamicConfig *config = nullptr;
|
|
const DynamicConfig *config_override = nullptr;
|
|
size_t current_extruder_id = 0;
|
|
// If false, the macro_processor will evaluate a full macro.
|
|
// If true, the macro processor will evaluate just a boolean condition using the full expressive power of the macro processor.
|
|
bool just_boolean_expression = false;
|
|
std::string error_message;
|
|
|
|
// Table to translate symbol tag to a human readable error message.
|
|
static std::map<std::string, std::string> tag_to_error_message;
|
|
|
|
static void evaluate_full_macro(const MyContext *ctx, bool &result) { result = ! ctx->just_boolean_expression; }
|
|
|
|
const ConfigOption* resolve_symbol(const std::string &opt_key) const
|
|
{
|
|
const ConfigOption *opt = nullptr;
|
|
if (config_override != nullptr)
|
|
opt = config_override->option(opt_key);
|
|
if (opt == nullptr)
|
|
opt = config->option(opt_key);
|
|
return opt;
|
|
}
|
|
|
|
template <typename Iterator>
|
|
static void legacy_variable_expansion(
|
|
const MyContext *ctx,
|
|
boost::iterator_range<Iterator> &opt_key,
|
|
std::string &output)
|
|
{
|
|
std::string opt_key_str(opt_key.begin(), opt_key.end());
|
|
const ConfigOption *opt = ctx->resolve_symbol(opt_key_str);
|
|
size_t idx = ctx->current_extruder_id;
|
|
if (opt == nullptr) {
|
|
// Check whether this is a legacy vector indexing.
|
|
idx = opt_key_str.rfind('_');
|
|
if (idx != std::string::npos) {
|
|
opt = ctx->resolve_symbol(opt_key_str.substr(0, idx));
|
|
if (opt != nullptr) {
|
|
if (! opt->is_vector())
|
|
ctx->throw_exception("Trying to index a scalar variable", opt_key);
|
|
char *endptr = nullptr;
|
|
idx = strtol(opt_key_str.c_str() + idx + 1, &endptr, 10);
|
|
if (endptr == nullptr || *endptr != 0)
|
|
ctx->throw_exception("Invalid vector index", boost::iterator_range<Iterator>(opt_key.begin() + idx + 1, opt_key.end()));
|
|
}
|
|
}
|
|
}
|
|
if (opt == nullptr)
|
|
ctx->throw_exception("Variable does not exist", boost::iterator_range<Iterator>(opt_key.begin(), opt_key.end()));
|
|
if (opt->is_scalar())
|
|
output = opt->serialize();
|
|
else {
|
|
const ConfigOptionVectorBase *vec = static_cast<const ConfigOptionVectorBase*>(opt);
|
|
if (vec->empty())
|
|
ctx->throw_exception("Indexing an empty vector variable", opt_key);
|
|
output = vec->vserialize()[(idx >= vec->size()) ? 0 : idx];
|
|
}
|
|
}
|
|
|
|
template <typename Iterator>
|
|
static void legacy_variable_expansion2(
|
|
const MyContext *ctx,
|
|
boost::iterator_range<Iterator> &opt_key,
|
|
boost::iterator_range<Iterator> &opt_vector_index,
|
|
std::string &output)
|
|
{
|
|
std::string opt_key_str(opt_key.begin(), opt_key.end());
|
|
const ConfigOption *opt = ctx->resolve_symbol(opt_key_str);
|
|
if (opt == nullptr) {
|
|
// Check whether the opt_key ends with '_'.
|
|
if (opt_key_str.back() == '_')
|
|
opt_key_str.resize(opt_key_str.size() - 1);
|
|
opt = ctx->resolve_symbol(opt_key_str);
|
|
}
|
|
if (! opt->is_vector())
|
|
ctx->throw_exception("Trying to index a scalar variable", opt_key);
|
|
const ConfigOptionVectorBase *vec = static_cast<const ConfigOptionVectorBase*>(opt);
|
|
if (vec->empty())
|
|
ctx->throw_exception("Indexing an empty vector variable", boost::iterator_range<Iterator>(opt_key.begin(), opt_key.end()));
|
|
const ConfigOption *opt_index = ctx->resolve_symbol(std::string(opt_vector_index.begin(), opt_vector_index.end()));
|
|
if (opt_index == nullptr)
|
|
ctx->throw_exception("Variable does not exist", opt_key);
|
|
if (opt_index->type() != coInt)
|
|
ctx->throw_exception("Indexing variable has to be integer", opt_key);
|
|
int idx = opt_index->getInt();
|
|
if (idx < 0)
|
|
ctx->throw_exception("Negative vector index", opt_key);
|
|
output = vec->vserialize()[(idx >= (int)vec->size()) ? 0 : idx];
|
|
}
|
|
|
|
template <typename Iterator>
|
|
static void resolve_variable(
|
|
const MyContext *ctx,
|
|
boost::iterator_range<Iterator> &opt_key,
|
|
OptWithPos<Iterator> &output)
|
|
{
|
|
const ConfigOption *opt = ctx->resolve_symbol(std::string(opt_key.begin(), opt_key.end()));
|
|
if (opt == nullptr)
|
|
ctx->throw_exception("Not a variable name", opt_key);
|
|
output.opt = opt;
|
|
output.it_range = opt_key;
|
|
}
|
|
|
|
template <typename Iterator>
|
|
static void scalar_variable_reference(
|
|
const MyContext *ctx,
|
|
OptWithPos<Iterator> &opt,
|
|
expr<Iterator> &output)
|
|
{
|
|
if (opt.opt->is_vector())
|
|
ctx->throw_exception("Referencing a vector variable when scalar is expected", opt.it_range);
|
|
switch (opt.opt->type()) {
|
|
case coFloat: output.set_d(opt.opt->getFloat()); break;
|
|
case coInt: output.set_i(opt.opt->getInt()); break;
|
|
case coString: output.set_s(static_cast<const ConfigOptionString*>(opt.opt)->value); break;
|
|
case coPercent: output.set_d(opt.opt->getFloat()); break;
|
|
case coPoint: output.set_s(opt.opt->serialize()); break;
|
|
case coBool: output.set_b(opt.opt->getBool()); break;
|
|
case coFloatOrPercent:
|
|
ctx->throw_exception("FloatOrPercent variables are not supported", opt.it_range);
|
|
default:
|
|
ctx->throw_exception("Unknown scalar variable type", opt.it_range);
|
|
}
|
|
output.it_range = opt.it_range;
|
|
}
|
|
|
|
template <typename Iterator>
|
|
static void vector_variable_reference(
|
|
const MyContext *ctx,
|
|
OptWithPos<Iterator> &opt,
|
|
int &index,
|
|
Iterator it_end,
|
|
expr<Iterator> &output)
|
|
{
|
|
if (opt.opt->is_scalar())
|
|
ctx->throw_exception("Referencing a scalar variable when vector is expected", opt.it_range);
|
|
const ConfigOptionVectorBase *vec = static_cast<const ConfigOptionVectorBase*>(opt.opt);
|
|
if (vec->empty())
|
|
ctx->throw_exception("Indexing an empty vector variable", opt.it_range);
|
|
size_t idx = (index < 0) ? 0 : (index >= int(vec->size())) ? 0 : size_t(index);
|
|
switch (opt.opt->type()) {
|
|
case coFloats: output.set_d(static_cast<const ConfigOptionFloats *>(opt.opt)->values[idx]); break;
|
|
case coInts: output.set_i(static_cast<const ConfigOptionInts *>(opt.opt)->values[idx]); break;
|
|
case coStrings: output.set_s(static_cast<const ConfigOptionStrings *>(opt.opt)->values[idx]); break;
|
|
case coPercents: output.set_d(static_cast<const ConfigOptionPercents*>(opt.opt)->values[idx]); break;
|
|
case coPoints: output.set_s(static_cast<const ConfigOptionPoints *>(opt.opt)->values[idx].dump_perl()); break;
|
|
case coBools: output.set_b(static_cast<const ConfigOptionBools *>(opt.opt)->values[idx] != 0); break;
|
|
default:
|
|
ctx->throw_exception("Unknown vector variable type", opt.it_range);
|
|
}
|
|
output.it_range = boost::iterator_range<Iterator>(opt.it_range.begin(), it_end);
|
|
}
|
|
|
|
// Verify that the expression returns an integer, which may be used
|
|
// to address a vector.
|
|
template <typename Iterator>
|
|
static void evaluate_index(expr<Iterator> &expr_index, int &output)
|
|
{
|
|
if (expr_index.type != expr<Iterator>::TYPE_INT)
|
|
expr_index.throw_exception("Non-integer index is not allowed to address a vector variable.");
|
|
output = expr_index.i();
|
|
}
|
|
|
|
template <typename Iterator>
|
|
static void throw_exception(const std::string &msg, const boost::iterator_range<Iterator> &it_range)
|
|
{
|
|
// An asterix is added to the start of the string to differentiate the boost::spirit::info::tag content
|
|
// between the grammer terminal / non-terminal symbol name and a free-form error message.
|
|
boost::throw_exception(qi::expectation_failure<Iterator>(it_range.begin(), it_range.end(), spirit::info(std::string("*") + msg)));
|
|
}
|
|
|
|
template <typename Iterator>
|
|
static void process_error_message(const MyContext *context, const boost::spirit::info &info, const Iterator &it_begin, const Iterator &it_end, const Iterator &it_error)
|
|
{
|
|
std::string &msg = const_cast<MyContext*>(context)->error_message;
|
|
std::string first(it_begin, it_error);
|
|
std::string last(it_error, it_end);
|
|
auto first_pos = first.rfind('\n');
|
|
auto last_pos = last.find('\n');
|
|
int line_nr = 1;
|
|
if (first_pos == std::string::npos)
|
|
first_pos = 0;
|
|
else {
|
|
// Calculate the current line number.
|
|
for (size_t i = 0; i <= first_pos; ++ i)
|
|
if (first[i] == '\n')
|
|
++ line_nr;
|
|
++ first_pos;
|
|
}
|
|
auto error_line = std::string(first, first_pos) + std::string(last, 0, last_pos);
|
|
// Position of the it_error from the start of its line.
|
|
auto error_pos = (it_error - it_begin) - first_pos;
|
|
msg += "Parsing error at line " + std::to_string(line_nr);
|
|
if (! info.tag.empty() && info.tag.front() == '*') {
|
|
// The gat contains an explanatory string.
|
|
msg += ": ";
|
|
msg += info.tag.substr(1);
|
|
} else {
|
|
auto it = tag_to_error_message.find(info.tag);
|
|
if (it == tag_to_error_message.end()) {
|
|
// A generic error report based on the nonterminal or terminal symbol name.
|
|
msg += ". Expecting tag ";
|
|
msg += info.tag;
|
|
} else {
|
|
// Use the human readable error message.
|
|
msg += ". ";
|
|
msg + it->second;
|
|
}
|
|
}
|
|
msg += '\n';
|
|
msg += error_line;
|
|
msg += '\n';
|
|
for (size_t i = 0; i < error_pos; ++ i)
|
|
msg += ' ';
|
|
msg += "^\n";
|
|
}
|
|
};
|
|
|
|
// Table to translate symbol tag to a human readable error message.
|
|
std::map<std::string, std::string> MyContext::tag_to_error_message = {
|
|
{ "eoi", "Unknown syntax error" },
|
|
{ "start", "Unknown syntax error" },
|
|
{ "text", "Invalid text." },
|
|
{ "text_block", "Invalid text block." },
|
|
{ "macro", "Invalid macro." },
|
|
{ "if_else_output", "Not an {if}{else}{endif} macro." },
|
|
{ "switch_output", "Not a {switch} macro." },
|
|
{ "legacy_variable_expansion", "Expecting a legacy variable expansion format" },
|
|
{ "identifier", "Expecting an identifier." },
|
|
{ "conditional_expression", "Expecting a conditional expression." },
|
|
{ "logical_or_expression", "Expecting a boolean expression." },
|
|
{ "logical_and_expression", "Expecting a boolean expression." },
|
|
{ "equality_expression", "Expecting an expression." },
|
|
{ "bool_expr_eval", "Expecting a boolean expression."},
|
|
{ "relational_expression", "Expecting an expression." },
|
|
{ "additive_expression", "Expecting an expression." },
|
|
{ "multiplicative_expression", "Expecting an expression." },
|
|
{ "unary_expression", "Expecting an expression." },
|
|
{ "scalar_variable_reference", "Expecting a scalar variable reference."},
|
|
{ "variable_reference", "Expecting a variable reference."},
|
|
{ "regular_expression", "Expecting a regular expression."}
|
|
};
|
|
|
|
// For debugging the boost::spirit parsers. Print out the string enclosed in it_range.
|
|
template<typename Iterator>
|
|
std::ostream& operator<<(std::ostream& os, const boost::iterator_range<Iterator> &it_range)
|
|
{
|
|
os << std::string(it_range.begin(), it_range.end());
|
|
return os;
|
|
}
|
|
|
|
// Disable parsing int numbers (without decimals) and Inf/NaN symbols by the double parser.
|
|
struct strict_real_policies_without_nan_inf : public qi::strict_real_policies<double>
|
|
{
|
|
template <typename It, typename Attr> static bool parse_nan(It&, It const&, Attr&) { return false; }
|
|
template <typename It, typename Attr> static bool parse_inf(It&, It const&, Attr&) { return false; }
|
|
};
|
|
|
|
// This parser is to be used inside a raw[] directive to accept a single valid UTF-8 character.
|
|
// If an invalid UTF-8 sequence is encountered, a qi::expectation_failure is thrown.
|
|
struct utf8_char_skipper_parser : qi::primitive_parser<utf8_char_skipper_parser>
|
|
{
|
|
// Define the attribute type exposed by this parser component
|
|
template <typename Context, typename Iterator>
|
|
struct attribute
|
|
{
|
|
typedef wchar_t type;
|
|
};
|
|
|
|
// This function is called during the actual parsing process
|
|
template <typename Iterator, typename Context , typename Skipper, typename Attribute>
|
|
bool parse(Iterator& first, Iterator const& last, Context& context, Skipper const& skipper, Attribute& attr) const
|
|
{
|
|
// The skipper shall always be empty, any white space will be accepted.
|
|
// skip_over(first, last, skipper);
|
|
if (first == last)
|
|
return false;
|
|
// Iterator over the UTF-8 sequence.
|
|
auto it = first;
|
|
// Read the first byte of the UTF-8 sequence.
|
|
unsigned char c = static_cast<boost::uint8_t>(*it ++);
|
|
unsigned int cnt = 0;
|
|
// UTF-8 sequence must not start with a continuation character:
|
|
if ((c & 0xC0) == 0x80)
|
|
goto err;
|
|
// Skip high surrogate first if there is one.
|
|
// If the most significant bit with a zero in it is in position
|
|
// 8-N then there are N bytes in this UTF-8 sequence:
|
|
{
|
|
unsigned char mask = 0x80u;
|
|
unsigned int result = 0;
|
|
while (c & mask) {
|
|
++ result;
|
|
mask >>= 1;
|
|
}
|
|
cnt = (result == 0) ? 1 : ((result > 4) ? 4 : result);
|
|
}
|
|
// Since we haven't read in a value, we need to validate the code points:
|
|
for (-- cnt; cnt > 0; -- cnt) {
|
|
if (it == last)
|
|
goto err;
|
|
c = static_cast<boost::uint8_t>(*it ++);
|
|
// We must have a continuation byte:
|
|
if (cnt > 1 && (c & 0xC0) != 0x80)
|
|
goto err;
|
|
}
|
|
first = it;
|
|
return true;
|
|
err:
|
|
MyContext::throw_exception("Invalid utf8 sequence", boost::iterator_range<Iterator>(first, last));
|
|
return false;
|
|
}
|
|
|
|
// This function is called during error handling to create a human readable string for the error context.
|
|
template <typename Context>
|
|
spirit::info what(Context&) const
|
|
{
|
|
return spirit::info("unicode_char");
|
|
}
|
|
};
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// Our macro_processor grammar
|
|
///////////////////////////////////////////////////////////////////////////
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// Inspired by the C grammar rules https://www.lysator.liu.se/c/ANSI-C-grammar-y.html
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template <typename Iterator>
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struct macro_processor : qi::grammar<Iterator, std::string(const MyContext*), qi::locals<bool>, spirit::ascii::space_type>
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{
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macro_processor() : macro_processor::base_type(start)
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{
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using namespace qi::labels;
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qi::alpha_type alpha;
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qi::alnum_type alnum;
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qi::eps_type eps;
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qi::raw_type raw;
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qi::lit_type lit;
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qi::lexeme_type lexeme;
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qi::no_skip_type no_skip;
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qi::real_parser<double, strict_real_policies_without_nan_inf> strict_double;
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spirit::ascii::char_type char_;
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utf8_char_skipper_parser utf8char;
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spirit::bool_type bool_;
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spirit::int_type int_;
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spirit::double_type double_;
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spirit::ascii::string_type string;
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spirit::eoi_type eoi;
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spirit::repository::qi::iter_pos_type iter_pos;
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auto kw = spirit::repository::qi::distinct(qi::copy(alnum | '_'));
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qi::_val_type _val;
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qi::_1_type _1;
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qi::_2_type _2;
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qi::_3_type _3;
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qi::_4_type _4;
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qi::_a_type _a;
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qi::_b_type _b;
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qi::_r1_type _r1;
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// Starting symbol of the grammer.
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// The leading eps is required by the "expectation point" operator ">".
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// Without it, some of the errors would not trigger the error handler.
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// Also the start symbol switches between the "full macro syntax" and a "boolean expression only",
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// depending on the context->just_boolean_expression flag. This way a single static expression parser
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// could serve both purposes.
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start = eps[px::bind(&MyContext::evaluate_full_macro, _r1, _a)] >
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( eps(_a==true) > text_block(_r1) [_val=_1]
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| conditional_expression(_r1) [ px::bind(&expr<Iterator>::evaluate_boolean_to_string, _1, _val) ]
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) > eoi;
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start.name("start");
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qi::on_error<qi::fail>(start, px::bind(&MyContext::process_error_message<Iterator>, _r1, _4, _1, _2, _3));
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text_block = *(
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text [_val+=_1]
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// Allow back tracking after '{' in case of a text_block embedded inside a condition.
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// In that case the inner-most {else} wins and the {if}/{elsif}/{else} shall be paired.
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// {elsif}/{else} without an {if} will be allowed to back track from the embedded text_block.
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| (lit('{') >> macro(_r1) [_val+=_1] > '}')
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| (lit('[') > legacy_variable_expansion(_r1) [_val+=_1] > ']')
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);
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text_block.name("text_block");
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// Free-form text up to a first brace, including spaces and newlines.
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// The free-form text will be inserted into the processed text without a modification.
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text = no_skip[raw[+(utf8char - char_('[') - char_('{'))]];
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text.name("text");
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// New style of macro expansion.
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// The macro expansion may contain numeric or string expressions, ifs and cases.
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macro =
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(kw["if"] > if_else_output(_r1) [_val = _1])
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// | (kw["switch"] > switch_output(_r1) [_val = _1])
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| additive_expression(_r1) [ px::bind(&expr<Iterator>::to_string2, _1, _val) ];
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macro.name("macro");
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// An if expression enclosed in {} (the outmost {} are already parsed by the caller).
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if_else_output =
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eps[_b=true] >
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bool_expr_eval(_r1)[_a=_1] > '}' >
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text_block(_r1)[px::bind(&expr<Iterator>::set_if, _a, _b, _1, _val)] > '{' >
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*(kw["elsif"] > bool_expr_eval(_r1)[_a=_1] > '}' >
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text_block(_r1)[px::bind(&expr<Iterator>::set_if, _a, _b, _1, _val)] > '{') >
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-(kw["else"] > lit('}') >
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text_block(_r1)[px::bind(&expr<Iterator>::set_if, _b, _b, _1, _val)] > '{') >
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kw["endif"];
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if_else_output.name("if_else_output");
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// A switch expression enclosed in {} (the outmost {} are already parsed by the caller).
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/*
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switch_output =
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eps[_b=true] >
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omit[expr(_r1)[_a=_1]] > '}' > text_block(_r1)[px::bind(&expr<Iterator>::set_if_equal, _a, _b, _1, _val)] > '{' >
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*("elsif" > omit[bool_expr_eval(_r1)[_a=_1]] > '}' > text_block(_r1)[px::bind(&expr<Iterator>::set_if, _a, _b, _1, _val)]) >>
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-("else" > '}' >> text_block(_r1)[px::bind(&expr<Iterator>::set_if, _b, _b, _1, _val)]) >
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"endif";
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*/
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// Legacy variable expansion of the original Slic3r, in the form of [scalar_variable] or [vector_variable_index].
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legacy_variable_expansion =
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(identifier >> &lit(']'))
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[ px::bind(&MyContext::legacy_variable_expansion<Iterator>, _r1, _1, _val) ]
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| (identifier > lit('[') > identifier > ']')
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[ px::bind(&MyContext::legacy_variable_expansion2<Iterator>, _r1, _1, _2, _val) ]
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;
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legacy_variable_expansion.name("legacy_variable_expansion");
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identifier =
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! kw[keywords] >>
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raw[lexeme[(alpha | '_') >> *(alnum | '_')]];
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identifier.name("identifier");
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conditional_expression =
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logical_or_expression(_r1) [_val = _1]
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>> -('?' > conditional_expression(_r1) > ':' > conditional_expression(_r1)) [px::bind(&expr<Iterator>::ternary_op, _val, _1, _2)];
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conditional_expression.name("conditional_expression");
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logical_or_expression =
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logical_and_expression(_r1) [_val = _1]
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>> *( ((kw["or"] | "||") > logical_and_expression(_r1) ) [px::bind(&expr<Iterator>::logical_or, _val, _1)] );
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logical_or_expression.name("logical_or_expression");
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logical_and_expression =
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equality_expression(_r1) [_val = _1]
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>> *( ((kw["and"] | "&&") > equality_expression(_r1) ) [px::bind(&expr<Iterator>::logical_and, _val, _1)] );
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logical_and_expression.name("logical_and_expression");
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equality_expression =
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relational_expression(_r1) [_val = _1]
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>> *( ("==" > relational_expression(_r1) ) [px::bind(&expr<Iterator>::equal, _val, _1)]
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| ("!=" > relational_expression(_r1) ) [px::bind(&expr<Iterator>::not_equal, _val, _1)]
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| ("<>" > relational_expression(_r1) ) [px::bind(&expr<Iterator>::not_equal, _val, _1)]
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| ("=~" > regular_expression ) [px::bind(&expr<Iterator>::regex_matches, _val, _1)]
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| ("!~" > regular_expression ) [px::bind(&expr<Iterator>::regex_doesnt_match, _val, _1)]
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);
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equality_expression.name("bool expression");
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// Evaluate a boolean expression stored as expr into a boolean value.
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// Throw if the equality_expression does not produce a expr of boolean type.
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bool_expr_eval = conditional_expression(_r1) [ px::bind(&expr<Iterator>::evaluate_boolean, _1, _val) ];
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bool_expr_eval.name("bool_expr_eval");
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relational_expression =
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additive_expression(_r1) [_val = _1]
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>> *( ("<=" > additive_expression(_r1) ) [px::bind(&expr<Iterator>::leq, _val, _1)]
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| (">=" > additive_expression(_r1) ) [px::bind(&expr<Iterator>::geq, _val, _1)]
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| (lit('<') > additive_expression(_r1) ) [px::bind(&expr<Iterator>::lower, _val, _1)]
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| (lit('>') > additive_expression(_r1) ) [px::bind(&expr<Iterator>::greater, _val, _1)]
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);
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relational_expression.name("relational_expression");
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additive_expression =
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multiplicative_expression(_r1) [_val = _1]
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>> *( (lit('+') > multiplicative_expression(_r1) ) [_val += _1]
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| (lit('-') > multiplicative_expression(_r1) ) [_val -= _1]
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);
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additive_expression.name("additive_expression");
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multiplicative_expression =
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unary_expression(_r1) [_val = _1]
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>> *( (lit('*') > unary_expression(_r1) ) [_val *= _1]
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| (lit('/') > unary_expression(_r1) ) [_val /= _1]
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);
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multiplicative_expression.name("multiplicative_expression");
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struct FactorActions {
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static void set_start_pos(Iterator &start_pos, expr<Iterator> &out)
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{ out.it_range = boost::iterator_range<Iterator>(start_pos, start_pos); }
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static void int_(int &value, Iterator &end_pos, expr<Iterator> &out)
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{ out = expr<Iterator>(value, out.it_range.begin(), end_pos); }
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static void double_(double &value, Iterator &end_pos, expr<Iterator> &out)
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{ out = expr<Iterator>(value, out.it_range.begin(), end_pos); }
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static void bool_(bool &value, Iterator &end_pos, expr<Iterator> &out)
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{ out = expr<Iterator>(value, out.it_range.begin(), end_pos); }
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static void string_(boost::iterator_range<Iterator> &it_range, expr<Iterator> &out)
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{ out = expr<Iterator>(std::string(it_range.begin() + 1, it_range.end() - 1), it_range.begin(), it_range.end()); }
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static void expr_(expr<Iterator> &value, Iterator &end_pos, expr<Iterator> &out)
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{ out = expr<Iterator>(std::move(value), out.it_range.begin(), end_pos); }
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static void minus_(expr<Iterator> &value, expr<Iterator> &out)
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{ out = value.unary_minus(out.it_range.begin()); }
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static void not_(expr<Iterator> &value, expr<Iterator> &out)
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{ out = value.unary_not(out.it_range.begin()); }
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};
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unary_expression = iter_pos[px::bind(&FactorActions::set_start_pos, _1, _val)] >> (
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scalar_variable_reference(_r1) [ _val = _1 ]
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| (lit('(') > conditional_expression(_r1) > ')' > iter_pos) [ px::bind(&FactorActions::expr_, _1, _2, _val) ]
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| (lit('-') > unary_expression(_r1) ) [ px::bind(&FactorActions::minus_, _1, _val) ]
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| (lit('+') > unary_expression(_r1) > iter_pos) [ px::bind(&FactorActions::expr_, _1, _2, _val) ]
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| ((kw["not"] | '!') > unary_expression(_r1) > iter_pos) [ px::bind(&FactorActions::not_, _1, _val) ]
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| (kw["min"] > '(' > conditional_expression(_r1) [_val = _1] > ',' > conditional_expression(_r1) > ')')
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[ px::bind(&expr<Iterator>::min, _val, _2) ]
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| (kw["max"] > '(' > conditional_expression(_r1) [_val = _1] > ',' > conditional_expression(_r1) > ')')
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[ px::bind(&expr<Iterator>::max, _val, _2) ]
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| (strict_double > iter_pos) [ px::bind(&FactorActions::double_, _1, _2, _val) ]
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| (int_ > iter_pos) [ px::bind(&FactorActions::int_, _1, _2, _val) ]
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| (kw[bool_] > iter_pos) [ px::bind(&FactorActions::bool_, _1, _2, _val) ]
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| raw[lexeme['"' > *((utf8char - char_('\\') - char_('"')) | ('\\' > char_)) > '"']]
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[ px::bind(&FactorActions::string_, _1, _val) ]
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);
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unary_expression.name("unary_expression");
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scalar_variable_reference =
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variable_reference(_r1)[_a=_1] >>
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(
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('[' > additive_expression(_r1)[px::bind(&MyContext::evaluate_index<Iterator>, _1, _b)] > ']' >
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iter_pos[px::bind(&MyContext::vector_variable_reference<Iterator>, _r1, _a, _b, _1, _val)])
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| eps[px::bind(&MyContext::scalar_variable_reference<Iterator>, _r1, _a, _val)]
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);
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scalar_variable_reference.name("scalar variable reference");
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variable_reference = identifier
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[ px::bind(&MyContext::resolve_variable<Iterator>, _r1, _1, _val) ];
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variable_reference.name("variable reference");
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regular_expression = raw[lexeme['/' > *((utf8char - char_('\\') - char_('/')) | ('\\' > char_)) > '/']];
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regular_expression.name("regular_expression");
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keywords.add
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("and")
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("if")
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//("inf")
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("else")
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("elsif")
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("endif")
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("false")
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("min")
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("max")
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("not")
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("or")
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("true");
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if (0) {
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debug(start);
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debug(text);
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debug(text_block);
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debug(macro);
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debug(if_else_output);
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// debug(switch_output);
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debug(legacy_variable_expansion);
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debug(identifier);
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debug(conditional_expression);
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debug(logical_or_expression);
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debug(logical_and_expression);
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debug(equality_expression);
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debug(bool_expr_eval);
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debug(relational_expression);
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debug(additive_expression);
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debug(multiplicative_expression);
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debug(unary_expression);
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debug(scalar_variable_reference);
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debug(variable_reference);
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debug(regular_expression);
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}
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}
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// Generic expression over expr<Iterator>.
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typedef qi::rule<Iterator, expr<Iterator>(const MyContext*), spirit::ascii::space_type> RuleExpression;
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// The start of the grammar.
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qi::rule<Iterator, std::string(const MyContext*), qi::locals<bool>, spirit::ascii::space_type> start;
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// A free-form text.
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qi::rule<Iterator, std::string(), spirit::ascii::space_type> text;
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// A free-form text, possibly empty, possibly containing macro expansions.
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qi::rule<Iterator, std::string(const MyContext*), spirit::ascii::space_type> text_block;
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// Statements enclosed in curely braces {}
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qi::rule<Iterator, std::string(const MyContext*), spirit::ascii::space_type> macro;
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// Legacy variable expansion of the original Slic3r, in the form of [scalar_variable] or [vector_variable_index].
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qi::rule<Iterator, std::string(const MyContext*), spirit::ascii::space_type> legacy_variable_expansion;
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// Parsed identifier name.
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qi::rule<Iterator, boost::iterator_range<Iterator>(), spirit::ascii::space_type> identifier;
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// Ternary operator (?:) over logical_or_expression.
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RuleExpression conditional_expression;
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// Logical or over logical_and_expressions.
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RuleExpression logical_or_expression;
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// Logical and over relational_expressions.
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RuleExpression logical_and_expression;
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// <, >, <=, >=
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RuleExpression relational_expression;
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// Math expression consisting of +- operators over multiplicative_expressions.
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RuleExpression additive_expression;
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// Boolean expressions over expressions.
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RuleExpression equality_expression;
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// Math expression consisting of */ operators over factors.
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RuleExpression multiplicative_expression;
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// Number literals, functions, braced expressions, variable references, variable indexing references.
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RuleExpression unary_expression;
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// Rule to capture a regular expression enclosed in //.
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qi::rule<Iterator, boost::iterator_range<Iterator>(), spirit::ascii::space_type> regular_expression;
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// Evaluate boolean expression into bool.
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qi::rule<Iterator, bool(const MyContext*), spirit::ascii::space_type> bool_expr_eval;
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// Reference of a scalar variable, or reference to a field of a vector variable.
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qi::rule<Iterator, expr<Iterator>(const MyContext*), qi::locals<OptWithPos<Iterator>, int>, spirit::ascii::space_type> scalar_variable_reference;
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// Rule to translate an identifier to a ConfigOption, or to fail.
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qi::rule<Iterator, OptWithPos<Iterator>(const MyContext*), spirit::ascii::space_type> variable_reference;
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qi::rule<Iterator, std::string(const MyContext*), qi::locals<bool, bool>, spirit::ascii::space_type> if_else_output;
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// qi::rule<Iterator, std::string(const MyContext*), qi::locals<expr<Iterator>, bool, std::string>, spirit::ascii::space_type> switch_output;
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qi::symbols<char> keywords;
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};
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}
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static std::string process_macro(const std::string &templ, client::MyContext &context)
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{
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typedef std::string::const_iterator iterator_type;
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typedef client::macro_processor<iterator_type> macro_processor;
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// Our whitespace skipper.
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spirit::ascii::space_type space;
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// Our grammar, statically allocated inside the method, meaning it will be allocated the first time
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// PlaceholderParser::process() runs.
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//FIXME this kind of initialization is not thread safe!
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static macro_processor macro_processor_instance;
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// Iterators over the source template.
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std::string::const_iterator iter = templ.begin();
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std::string::const_iterator end = templ.end();
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// Accumulator for the processed template.
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std::string output;
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bool res = phrase_parse(iter, end, macro_processor_instance(&context), space, output);
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if (!context.error_message.empty()) {
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if (context.error_message.back() != '\n' && context.error_message.back() != '\r')
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context.error_message += '\n';
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throw std::runtime_error(context.error_message);
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}
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return output;
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}
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std::string PlaceholderParser::process(const std::string &templ, unsigned int current_extruder_id, const DynamicConfig *config_override) const
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{
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client::MyContext context;
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context.config = &this->config();
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context.config_override = config_override;
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context.current_extruder_id = current_extruder_id;
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return process_macro(templ, context);
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}
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// Evaluate a boolean expression using the full expressive power of the PlaceholderParser boolean expression syntax.
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// Throws std::runtime_error on syntax or runtime error.
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bool PlaceholderParser::evaluate_boolean_expression(const std::string &templ, const DynamicConfig &config, const DynamicConfig *config_override)
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{
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client::MyContext context;
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context.config = &config;
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context.config_override = config_override;
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// Let the macro processor parse just a boolean expression, not the full macro language.
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context.just_boolean_expression = true;
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return process_macro(templ, context) == "true";
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}
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}
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