diff options
Diffstat (limited to 'include/llmr/style/filter_expression_private.hpp')
-rw-r--r-- | include/llmr/style/filter_expression_private.hpp | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/include/llmr/style/filter_expression_private.hpp b/include/llmr/style/filter_expression_private.hpp new file mode 100644 index 0000000000..9a1f9fed30 --- /dev/null +++ b/include/llmr/style/filter_expression_private.hpp @@ -0,0 +1,87 @@ +#ifndef LLMR_STYLE_FILTER_EXPRESSION_PRIVATE +#define LLMR_STYLE_FILTER_EXPRESSION_PRIVATE + +#include "filter_expression.hpp" + +namespace llmr { + +template <typename Extractor> +inline bool FilterComparison::compare(const Extractor &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; +} + +template <typename Extractor> +bool FilterExpression::compare(const Extractor &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; + } +} + +} + +#endif |