// © 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_SYMBOLS_H__

#define __NUMPARSE_SYMBOLS_H__

#include "numparse_types.h"

#include "unicode/uniset.h"

#include "static_unicode_sets.h"

U_NAMESPACE_BEGIN

namespace numparse::impl {

/**

 * A base class for many matchers that performs a simple match against a UnicodeString and/or UnicodeSet.

 *

 * @author sffc

 */

// Exported as U_I18N_API for tests

class U_I18N_API SymbolMatcher : public NumberParseMatcher, public UMemory {

  public:

    SymbolMatcher() = default;  // WARNING: Leaves the object in an unusable state

    const UnicodeSet* getSet() const;

    bool match(StringSegment& segment, ParsedNumber& result, UErrorCode& status) const override;

    bool smokeTest(const StringSegment& segment) const override;

    UnicodeString toString() const override;

    virtual bool isDisabled(const ParsedNumber& result) const = 0;

    virtual void accept(StringSegment& segment, ParsedNumber& result) const = 0;

  protected:

    UnicodeString fString;

    const UnicodeSet* fUniSet; // a reference from numparse_unisets.h; never owned

    SymbolMatcher(const UnicodeString& symbolString, unisets::Key key);

};

// Exported as U_I18N_API for tests

class U_I18N_API IgnorablesMatcher : public SymbolMatcher {

  public:

    IgnorablesMatcher() = default;  // WARNING: Leaves the object in an unusable state

    IgnorablesMatcher(parse_flags_t parseFlags);

    bool isFlexible() const override;

    UnicodeString toString() const override;

  protected:

    bool isDisabled(const ParsedNumber& result) const override;

    void accept(StringSegment& segment, ParsedNumber& result) const override;

};

class InfinityMatcher : public SymbolMatcher {

  public:

    InfinityMatcher() = default;  // WARNING: Leaves the object in an unusable state

    InfinityMatcher(const DecimalFormatSymbols& dfs);

  protected:

    bool isDisabled(const ParsedNumber& result) const override;

    void accept(StringSegment& segment, ParsedNumber& result) const override;

};

// Exported as U_I18N_API for tests

class U_I18N_API MinusSignMatcher : public SymbolMatcher {

  public:

    MinusSignMatcher() = default;  // WARNING: Leaves the object in an unusable state

    MinusSignMatcher(const DecimalFormatSymbols& dfs, bool allowTrailing);

  protected:

    bool isDisabled(const ParsedNumber& result) const override;

    void accept(StringSegment& segment, ParsedNumber& result) const override;

  private:

    bool fAllowTrailing;

};

class NanMatcher : public SymbolMatcher {

  public:

    NanMatcher() = default;  // WARNING: Leaves the object in an unusable state

    NanMatcher(const DecimalFormatSymbols& dfs);

  protected:

    bool isDisabled(const ParsedNumber& result) const override;

    void accept(StringSegment& segment, ParsedNumber& result) const override;

};

class PaddingMatcher : public SymbolMatcher {

  public:

    PaddingMatcher() = default;  // WARNING: Leaves the object in an unusable state

    PaddingMatcher(const UnicodeString& padString);

    bool isFlexible() const override;

  protected:

    bool isDisabled(const ParsedNumber& result) const override;

    void accept(StringSegment& segment, ParsedNumber& result) const override;

};

// Exported as U_I18N_API for tests

class U_I18N_API PercentMatcher : public SymbolMatcher {

  public:

    PercentMatcher() = default;  // WARNING: Leaves the object in an unusable state

    PercentMatcher(const DecimalFormatSymbols& dfs);

  protected:

    bool isDisabled(const ParsedNumber& result) const override;

    void accept(StringSegment& segment, ParsedNumber& result) const override;

};

// Exported as U_I18N_API for tests

class U_I18N_API PermilleMatcher : public SymbolMatcher {

  public:

    PermilleMatcher() = default;  // WARNING: Leaves the object in an unusable state

    PermilleMatcher(const DecimalFormatSymbols& dfs);

  protected:

    bool isDisabled(const ParsedNumber& result) const override;

    void accept(StringSegment& segment, ParsedNumber& result) const override;

};

// Exported as U_I18N_API for tests

class U_I18N_API PlusSignMatcher : public SymbolMatcher {

  public:

    PlusSignMatcher() = default;  // WARNING: Leaves the object in an unusable state

    PlusSignMatcher(const DecimalFormatSymbols& dfs, bool allowTrailing);

  protected:

    bool isDisabled(const ParsedNumber& result) const override;

    void accept(StringSegment& segment, ParsedNumber& result) const override;

  private:

    bool fAllowTrailing;

};

// Exported as U_I18N_API for tests

class U_I18N_API ApproximatelySignMatcher : public SymbolMatcher {

  public:

    ApproximatelySignMatcher() = default;  // WARNING: Leaves the object in an unusable state

    ApproximatelySignMatcher(const DecimalFormatSymbols& dfs, bool allowTrailing);

  protected:

    bool isDisabled(const ParsedNumber& result) const override;

    void accept(StringSegment& segment, ParsedNumber& result) const override;

  private:

    bool fAllowTrailing;

};

} // namespace numparse::impl

U_NAMESPACE_END

#endif //__NUMPARSE_SYMBOLS_H__

#endif /* #if !UCONFIG_NO_FORMATTING */