1 files changed, 100 insertions, 0 deletions
diff --git a/intl/icu/source/i18n/number_compact.h b/intl/icu/source/i18n/number_compact.h
new file mode 100644
index 0000000000..aee1df7452
--- /dev/null
+++ b/intl/icu/source/i18n/number_compact.h
@@ -0,0 +1,100 @@
+// © 2017 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+
+#include "unicode/utypes.h"
+
+#if !UCONFIG_NO_FORMATTING
+#ifndef __NUMBER_COMPACT_H__
+#define __NUMBER_COMPACT_H__
+
+#include "standardplural.h"
+#include "number_types.h"
+#include "unicode/unum.h"
+#include "uvector.h"
+#include "resource.h"
+#include "number_patternmodifier.h"
+
+U_NAMESPACE_BEGIN namespace number {
+namespace impl {
+
+static const int32_t COMPACT_MAX_DIGITS = 20;
+
+class CompactData : public MultiplierProducer {
+  public:
+    CompactData();
+
+    void populate(const Locale &locale, const char *nsName, CompactStyle compactStyle,
+                  CompactType compactType, UErrorCode &status);
+
+    int32_t getMultiplier(int32_t magnitude) const override;
+
+    const char16_t *getPattern(
+        int32_t magnitude,
+        const PluralRules *rules,
+        const DecimalQuantity &dq) const;
+
+    void getUniquePatterns(UVector &output, UErrorCode &status) const;
+
+  private:
+    const char16_t *patterns[(COMPACT_MAX_DIGITS + 1) * StandardPlural::COUNT];
+    int8_t multipliers[COMPACT_MAX_DIGITS + 1];
+    int8_t largestMagnitude;
+    UBool isEmpty;
+
+    class CompactDataSink : public ResourceSink {
+      public:
+        explicit CompactDataSink(CompactData &data) : data(data) {}
+
+        void put(const char *key, ResourceValue &value, UBool /*noFallback*/, UErrorCode &status) override;
+
+      private:
+        CompactData &data;
+    };
+};
+
+struct CompactModInfo {
+    const ImmutablePatternModifier *mod;
+    const char16_t* patternString;
+};
+
+class CompactHandler : public MicroPropsGenerator, public UMemory {
+  public:
+    CompactHandler(
+            CompactStyle compactStyle,
+            const Locale &locale,
+            const char *nsName,
+            CompactType compactType,
+            const PluralRules *rules,
+            MutablePatternModifier *buildReference,
+            bool safe,
+            const MicroPropsGenerator *parent,
+            UErrorCode &status);
+
+    ~CompactHandler() override;
+
+    void
+    processQuantity(DecimalQuantity &quantity, MicroProps &micros, UErrorCode &status) const override;
+
+  private:
+    const PluralRules *rules;
+    const MicroPropsGenerator *parent;
+    // Initial capacity of 12 for 0K, 00K, 000K, ...M, ...B, and ...T
+    MaybeStackArray<CompactModInfo, 12> precomputedMods;
+    int32_t precomputedModsLength = 0;
+    CompactData data;
+    ParsedPatternInfo unsafePatternInfo;
+    MutablePatternModifier* unsafePatternModifier;
+    UBool safe;
+
+    /** Used by the safe code path */
+    void precomputeAllModifiers(MutablePatternModifier &buildReference, UErrorCode &status);
+};
+
+
+} // namespace impl
+} // namespace number
+U_NAMESPACE_END
+
+#endif //__NUMBER_COMPACT_H__
+
+#endif /* #if !UCONFIG_NO_FORMATTING */