YQL-13710 try to switch to new shiny PG

ref:2bed0445c8e8bd6c575883632adf19445f0a72a7

1 files changed, 154 insertions, 0 deletions

diff --git a/contrib/libs/icu/i18n/number_formatimpl.h b/contrib/libs/icu/i18n/number_formatimpl.h
new file mode 100644
index 0000000000..084bc4a9d0
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+++ b/contrib/libs/icu/i18n/number_formatimpl.h
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+// © 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_FORMATIMPL_H__
+#define __NUMBER_FORMATIMPL_H__
+
+#include "number_types.h"
+#include "formatted_string_builder.h"
+#include "number_patternstring.h"
+#include "number_utils.h"
+#include "number_patternmodifier.h"
+#include "number_longnames.h"
+#include "number_compact.h"
+#include "number_microprops.h"
+
+U_NAMESPACE_BEGIN namespace number {
+namespace impl {
+
+/**
+ * This is the "brain" of the number formatting pipeline. It ties all the pieces together, taking in a MacroProps and a
+ * DecimalQuantity and outputting a properly formatted number string.
+ */
+class NumberFormatterImpl : public UMemory {
+  public:
+    /**
+     * Builds a "safe" MicroPropsGenerator, which is thread-safe and can be used repeatedly.
+     * The caller owns the returned NumberFormatterImpl.
+     */
+    NumberFormatterImpl(const MacroProps &macros, UErrorCode &status);
+
+    /**
+     * Builds and evaluates an "unsafe" MicroPropsGenerator, which is cheaper but can be used only once.
+     */
+    static int32_t
+    formatStatic(const MacroProps &macros, DecimalQuantity &inValue, FormattedStringBuilder &outString,
+                 UErrorCode &status);
+
+    /**
+     * Prints only the prefix and suffix; used for DecimalFormat getters.
+     *
+     * @return The index into the output at which the prefix ends and the suffix starts; in other words,
+     *         the prefix length.
+     */
+    static int32_t getPrefixSuffixStatic(const MacroProps& macros, Signum signum,
+                                         StandardPlural::Form plural, FormattedStringBuilder& outString,
+                                         UErrorCode& status);
+
+    /**
+     * Evaluates the "safe" MicroPropsGenerator created by "fromMacros".
+     */
+    int32_t format(DecimalQuantity& inValue, FormattedStringBuilder& outString, UErrorCode& status) const;
+
+    /**
+     * Like format(), but saves the result into an output MicroProps without additional processing.
+     */
+    void preProcess(DecimalQuantity& inValue, MicroProps& microsOut, UErrorCode& status) const;
+
+    /**
+     * Like getPrefixSuffixStatic() but uses the safe compiled object.
+     */
+    int32_t getPrefixSuffix(Signum signum, StandardPlural::Form plural, FormattedStringBuilder& outString,
+                            UErrorCode& status) const;
+
+    const MicroProps& getRawMicroProps() const {
+        return fMicros;
+    }
+
+    /**
+     * Synthesizes the output string from a MicroProps and DecimalQuantity.
+     * This method formats only the main number, not affixes.
+     */
+    static int32_t writeNumber(const MicroProps& micros, DecimalQuantity& quantity,
+                               FormattedStringBuilder& string, int32_t index, UErrorCode& status);
+
+    /**
+     * Adds the affixes.  Intended to be called immediately after formatNumber.
+     */
+    static int32_t writeAffixes(const MicroProps& micros, FormattedStringBuilder& string, int32_t start,
+                                int32_t end, UErrorCode& status);
+
+  private:
+    // Head of the MicroPropsGenerator linked list:
+    const MicroPropsGenerator *fMicroPropsGenerator = nullptr;
+
+    // Tail of the list:
+    MicroProps fMicros;
+
+    // Other fields possibly used by the number formatting pipeline:
+    // TODO: Convert more of these LocalPointers to value objects to reduce the number of news?
+    LocalPointer<const DecimalFormatSymbols> fSymbols;
+    LocalPointer<const PluralRules> fRules;
+    LocalPointer<const ParsedPatternInfo> fPatternInfo;
+    LocalPointer<const ScientificHandler> fScientificHandler;
+    LocalPointer<MutablePatternModifier> fPatternModifier;
+    LocalPointer<ImmutablePatternModifier> fImmutablePatternModifier;
+    LocalPointer<const LongNameHandler> fLongNameHandler;
+    LocalPointer<const CompactHandler> fCompactHandler;
+
+    // Value objects possibly used by the number formatting pipeline:
+    struct Warehouse {
+        CurrencySymbols fCurrencySymbols;
+    } fWarehouse;
+
+
+    NumberFormatterImpl(const MacroProps &macros, bool safe, UErrorCode &status);
+
+    MicroProps& preProcessUnsafe(DecimalQuantity &inValue, UErrorCode &status);
+
+    int32_t getPrefixSuffixUnsafe(Signum signum, StandardPlural::Form plural,
+                                  FormattedStringBuilder& outString, UErrorCode& status);
+
+    /**
+     * If rulesPtr is non-null, return it.  Otherwise, return a PluralRules owned by this object for the
+     * specified locale, creating it if necessary.
+     */
+    const PluralRules *
+    resolvePluralRules(const PluralRules *rulesPtr, const Locale &locale, UErrorCode &status);
+
+    /**
+     * Synthesizes the MacroProps into a MicroPropsGenerator. All information, including the locale, is encoded into the
+     * MicroPropsGenerator, except for the quantity itself, which is left abstract and must be provided to the returned
+     * MicroPropsGenerator instance.
+     *
+     * @see MicroPropsGenerator
+     * @param macros
+     *            The {@link MacroProps} to consume. This method does not mutate the MacroProps instance.
+     * @param safe
+     *            If true, the returned MicroPropsGenerator will be thread-safe. If false, the returned value will
+     *            <em>not</em> be thread-safe, intended for a single "one-shot" use only. Building the thread-safe
+     *            object is more expensive.
+     */
+    const MicroPropsGenerator *
+    macrosToMicroGenerator(const MacroProps &macros, bool safe, UErrorCode &status);
+
+    static int32_t
+    writeIntegerDigits(const MicroProps &micros, DecimalQuantity &quantity, FormattedStringBuilder &string,
+                       int32_t index, UErrorCode &status);
+
+    static int32_t
+    writeFractionDigits(const MicroProps &micros, DecimalQuantity &quantity, FormattedStringBuilder &string,
+                        int32_t index, UErrorCode &status);
+};
+
+}  // namespace impl
+}  // namespace number
+U_NAMESPACE_END
+
+
+#endif //__NUMBER_FORMATIMPL_H__
+
+#endif /* #if !UCONFIG_NO_FORMATTING */