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#include <llmr/map/filter_expression.hpp>
#include <llmr/map/vector_tile.hpp>
namespace llmr {
template <typename Comparer>
inline bool FilterComparison::Instance::includes(const Value &property_value, const Comparer &comparer) const {
for (const Value &filter_value : values) {
if (comparer(property_value, filter_value)) {
return true;
}
}
return false;
}
template <typename Comparer>
inline bool FilterComparison::Instance::compare(const Value &property_value, const Comparer &comparer) const {
for (const Value &filter_value : values) {
if (!comparer(property_value, filter_value)) {
return false;
}
}
return true;
}
template <typename Comparer>
inline bool FilterComparison::Instance::all(const std::forward_list<Value> &property_values, const Comparer &comparer) const {
for (const Value &property_value : property_values) {
if (!compare(property_value, comparer)) {
return false;
}
}
return true;
}
bool FilterComparison::Instance::compare(const Value &property_value) const {
switch (op) {
case Operator::Equal:
case Operator::In:
return includes(property_value, util::relaxed_equal);
case Operator::NotEqual:
case Operator::NotIn:
return !includes(property_value, util::relaxed_equal);
case Operator::Greater:
return compare(property_value, util::relaxed_greater);
case Operator::GreaterEqual:
return compare(property_value, util::relaxed_greater_equal);
case Operator::Less:
return compare(property_value, util::relaxed_less);
case Operator::LessEqual:
return compare(property_value, util::relaxed_less_equal);
default:
return false;
}
}
bool FilterComparison::Instance::compare(const std::forward_list<Value> &property_values) const {
switch (op) {
case Operator::Equal:
for (const Value &property_value : property_values) {
if (!includes(property_value, util::relaxed_equal)) {
return false;
}
}
return true;
case Operator::NotEqual:
for (const Value &property_value : property_values) {
if (includes(property_value, util::relaxed_equal)) {
return false;
}
}
return true;
case Operator::In:
for (const Value &property_value : property_values) {
if (includes(property_value, util::relaxed_equal)) {
return true;
}
}
return false;
case Operator::NotIn:
for (const Value &property_value : property_values) {
if (!includes(property_value, util::relaxed_equal)) {
return true;
}
}
return false;
case Operator::Greater:
return all(property_values, util::relaxed_greater);
case Operator::GreaterEqual:
return all(property_values, util::relaxed_greater_equal);
case Operator::Less:
return all(property_values, util::relaxed_less);
case Operator::LessEqual:
return all(property_values, util::relaxed_less_equal);
}
}
const std::string &FilterComparison::getField() const {
return field;
}
inline bool FilterComparison::compare(const VectorTileTagExtractor &extractor) const {
const std::forward_list<Value> values = extractor.getValues(field);
// All instances are ANDed together.
for (const Instance &instance : instances) {
if (!instance.compare(values)) {
return false;
}
}
return true;
}
std::ostream& operator <<(std::ostream &s, const FilterComparison &comparison) {
s << "comparison" << std::endl;
for (const FilterComparison::Instance &instance : comparison.instances) {
s << " - " << comparison.field << " " << instance << std::endl;
}
return s;
}
std::ostream& operator <<(std::ostream &s, const FilterComparison::Instance &instance) {
switch (instance.op) {
case FilterComparison::Operator::Equal: s << "=="; break;
case FilterComparison::Operator::NotEqual: s << "!="; break;
case FilterComparison::Operator::Greater: s << ">"; break;
case FilterComparison::Operator::GreaterEqual: s << ">="; break;
case FilterComparison::Operator::Less: s << "<"; break;
case FilterComparison::Operator::LessEqual: s << "<="; break;
case FilterComparison::Operator::In: s << "in"; break;
case FilterComparison::Operator::NotIn: s << "!in"; break;
}
s << " [ ";
for (const Value &value : instance.values) {
s << toString(value) << " ";
}
s << "]";
return s;
}
FilterComparison::Operator parseFilterComparisonOperator(const std::string &op) {
if (op == "==") return FilterComparison::Operator::Equal;
if (op == "!=") return FilterComparison::Operator::NotEqual;
if (op == ">") return FilterComparison::Operator::Greater;
if (op == ">=") return FilterComparison::Operator::GreaterEqual;
if (op == "<") return FilterComparison::Operator::Less;
if (op == "<=") return FilterComparison::Operator::LessEqual;
if (op == "in") return FilterComparison::Operator::In;
if (op == "!in") return FilterComparison::Operator::NotIn;
return FilterComparison::Operator::Equal;
}
std::ostream& operator <<(std::ostream &s, FilterExpression::Operator op) {
switch (op) {
case FilterExpression::Operator::And: s << "AND"; break;
case FilterExpression::Operator::Or: s << "OR"; break;
case FilterExpression::Operator::Xor: s << "XOR"; break;
case FilterExpression::Operator::Nor: s << "NOR"; break;
}
return s;
}
std::ostream& operator <<(std::ostream &s, FilterExpression::GeometryType type) {
switch (type) {
case FilterExpression::GeometryType::Point: s << "point"; break;
case FilterExpression::GeometryType::Line: s << "line"; break;
case FilterExpression::GeometryType::Polygon: s << "polygon"; break;
case FilterExpression::GeometryType::Any: s << "any"; break;
}
return s;
}
bool FilterExpression::compare(const VectorTileTagExtractor &extractor) const {
if (type != GeometryType::Any && extractor.getType() != type && extractor.getType() != GeometryType::Any) {
return false;
}
switch (op) {
case Operator::And:
for (const FilterComparison &comparison : comparisons) {
if (!comparison.compare(extractor)) {
return false;
}
}
for (const FilterExpression &expression: expressions) {
if (!expression.compare(extractor)) {
return false;
}
}
return true;
case Operator::Or:
for (const FilterComparison &comparison : comparisons) {
if (comparison.compare(extractor)) {
return true;
}
}
for (const FilterExpression &expression: expressions) {
if (expression.compare(extractor)) {
return true;
}
}
return false;
case Operator::Xor: {
int count = 0;
for (const FilterComparison &comparison : comparisons) {
count += comparison.compare(extractor);
if (count > 1) {
return false;
}
}
for (const FilterExpression &expression: expressions) {
count += expression.compare(extractor);
if (count > 1) {
return false;
}
}
return count == 1;
}
case Operator::Nor:
for (const FilterComparison &comparison : comparisons) {
if (comparison.compare(extractor)) {
return false;
}
}
for (const FilterExpression &expression: expressions) {
if (expression.compare(extractor)) {
return false;
}
}
return true;
default:
return true;
}
}
bool FilterExpression::empty() const {
return type == GeometryType::Any && comparisons.empty() && expressions.empty();
}
void FilterExpression::add(const FilterComparison &comparison) {
comparisons.emplace_front(comparison);
}
void FilterExpression::add(const FilterExpression &expression) {
expressions.emplace_front(expression);
}
void FilterExpression::setGeometryType(GeometryType g) {
type = g;
}
FilterExpression::GeometryType parseGeometryType(const std::string &geometry) {
if (geometry == "point") return FilterExpression::GeometryType::Point;
if (geometry == "line") return FilterExpression::GeometryType::Line;
if (geometry == "polygon") return FilterExpression::GeometryType::Polygon;
return FilterExpression::GeometryType::Any;
}
std::ostream& operator <<(std::ostream &s, const FilterExpression &expression) {
s << "expression " << expression.op << std::endl;
s << " - $type = " << expression.type << std::endl;
for (const FilterComparison &comparison : expression.comparisons) {
s << comparison;
}
s << "end expression" << std::endl;
return s;
}
}
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