1 files changed, 76 insertions, 0 deletions
diff --git a/intl/icu/source/i18n/numparse_decimal.h b/intl/icu/source/i18n/numparse_decimal.h
new file mode 100644
index 0000000000..07c9afeccc
--- /dev/null
+++ b/intl/icu/source/i18n/numparse_decimal.h
@@ -0,0 +1,76 @@
+// © 2018 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 __NUMPARSE_DECIMAL_H__
+#define __NUMPARSE_DECIMAL_H__
+
+#include "unicode/uniset.h"
+#include "numparse_types.h"
+
+U_NAMESPACE_BEGIN namespace numparse {
+namespace impl {
+
+using ::icu::number::impl::Grouper;
+
+class DecimalMatcher : public NumberParseMatcher, public UMemory {
+  public:
+    DecimalMatcher() = default;  // WARNING: Leaves the object in an unusable state
+
+    DecimalMatcher(const DecimalFormatSymbols& symbols, const Grouper& grouper,
+                   parse_flags_t parseFlags);
+
+    bool match(StringSegment& segment, ParsedNumber& result, UErrorCode& status) const override;
+
+    bool
+    match(StringSegment& segment, ParsedNumber& result, int8_t exponentSign, UErrorCode& status) const;
+
+    bool smokeTest(const StringSegment& segment) const override;
+
+    UnicodeString toString() const override;
+
+  private:
+    /** If true, only accept strings whose grouping sizes match the locale */
+    bool requireGroupingMatch;
+
+    /** If true, do not accept grouping separators at all */
+    bool groupingDisabled;
+
+    // Fraction grouping parsing is disabled for now but could be enabled later.
+    // See https://unicode-org.atlassian.net/browse/ICU-10794
+    // bool fractionGrouping;
+
+    /** If true, do not accept numbers in the fraction */
+    bool integerOnly;
+
+    int16_t grouping1;
+    int16_t grouping2;
+
+    UnicodeString groupingSeparator;
+    UnicodeString decimalSeparator;
+
+    // Assumption: these sets all consist of single code points. If this assumption needs to be broken,
+    // fix getLeadCodePoints() as well as matching logic. Be careful of the performance impact.
+    const UnicodeSet* groupingUniSet;
+    const UnicodeSet* decimalUniSet;
+    const UnicodeSet* separatorSet;
+    const UnicodeSet* leadSet;
+
+    // Make this class the owner of a few objects that could be allocated.
+    // The first three LocalPointers are used for assigning ownership only.
+    LocalPointer<const UnicodeSet> fLocalDecimalUniSet;
+    LocalPointer<const UnicodeSet> fLocalSeparatorSet;
+    LocalArray<const UnicodeString> fLocalDigitStrings;
+
+    bool validateGroup(int32_t sepType, int32_t count, bool isPrimary) const;
+};
+
+
+} // namespace impl
+} // namespace numparse
+U_NAMESPACE_END
+
+#endif //__NUMPARSE_DECIMAL_H__
+#endif /* #if !UCONFIG_NO_FORMATTING */