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messagepattern.h
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1 // © 2016 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
3 /*
4 *******************************************************************************
5 * Copyright (C) 2011-2013, International Business Machines
6 * Corporation and others. All Rights Reserved.
7 *******************************************************************************
8 * file name: messagepattern.h
9 * encoding: UTF-8
10 * tab size: 8 (not used)
11 * indentation:4
12 *
13 * created on: 2011mar14
14 * created by: Markus W. Scherer
15 */
16
17 #ifndef __MESSAGEPATTERN_H__
18 #define __MESSAGEPATTERN_H__
19
25 #include "unicode/utypes.h"
26
27 #if !UCONFIG_NO_FORMATTING
28
29 #include "unicode/parseerr.h"
30 #include "unicode/unistr.h"
31
68 enum UMessagePatternApostropheMode {
80 UMSGPAT_APOS_DOUBLE_OPTIONAL,
89 UMSGPAT_APOS_DOUBLE_REQUIRED
90 };
94 typedef enum UMessagePatternApostropheMode UMessagePatternApostropheMode;
95
100 enum UMessagePatternPartType {
110 UMSGPAT_PART_TYPE_MSG_START,
119 UMSGPAT_PART_TYPE_MSG_LIMIT,
127 UMSGPAT_PART_TYPE_SKIP_SYNTAX,
134 UMSGPAT_PART_TYPE_INSERT_CHAR,
142 UMSGPAT_PART_TYPE_REPLACE_NUMBER,
153 UMSGPAT_PART_TYPE_ARG_START,
160 UMSGPAT_PART_TYPE_ARG_LIMIT,
165 UMSGPAT_PART_TYPE_ARG_NUMBER,
171 UMSGPAT_PART_TYPE_ARG_NAME,
177 UMSGPAT_PART_TYPE_ARG_TYPE,
183 UMSGPAT_PART_TYPE_ARG_STYLE,
189 UMSGPAT_PART_TYPE_ARG_SELECTOR,
196 UMSGPAT_PART_TYPE_ARG_INT,
204 UMSGPAT_PART_TYPE_ARG_DOUBLE
205 };
209 typedef enum UMessagePatternPartType UMessagePatternPartType;
210
219 enum UMessagePatternArgType {
224 UMSGPAT_ARG_TYPE_NONE,
230 UMSGPAT_ARG_TYPE_SIMPLE,
236 UMSGPAT_ARG_TYPE_CHOICE,
246 UMSGPAT_ARG_TYPE_PLURAL,
251 UMSGPAT_ARG_TYPE_SELECT,
257 UMSGPAT_ARG_TYPE_SELECTORDINAL
258 };
262 typedef enum UMessagePatternArgType UMessagePatternArgType;
263
270 #define UMSGPAT_ARG_TYPE_HAS_PLURAL_STYLE(argType) \
271 ((argType)==UMSGPAT_ARG_TYPE_PLURAL || (argType)==UMSGPAT_ARG_TYPE_SELECTORDINAL)
272
273 enum {
279 UMSGPAT_ARG_NAME_NOT_NUMBER=-1,
280
288 UMSGPAT_ARG_NAME_NOT_VALID=-2
289 };
290
297 #define UMSGPAT_NO_NUMERIC_VALUE ((double)(-123456789))
298
299 U_NAMESPACE_BEGIN
300
301 class MessagePatternDoubleList;
302 class MessagePatternPartsList;
303
360 class U_COMMON_API MessagePattern : public UObject {
361 public:
370 MessagePattern(UErrorCode &errorCode);
371
381 MessagePattern(UMessagePatternApostropheMode mode, UErrorCode &errorCode);
382
401 MessagePattern(const UnicodeString &pattern, UParseError *parseError, UErrorCode &errorCode);
402
408 MessagePattern(const MessagePattern &other);
409
416 MessagePattern &operator=(const MessagePattern &other);
417
422 virtual ~MessagePattern();
423
441 MessagePattern &parse(const UnicodeString &pattern,
442 UParseError *parseError, UErrorCode &errorCode);
443
461 MessagePattern &parseChoiceStyle(const UnicodeString &pattern,
462 UParseError *parseError, UErrorCode &errorCode);
463
481 MessagePattern &parsePluralStyle(const UnicodeString &pattern,
482 UParseError *parseError, UErrorCode &errorCode);
483
501 MessagePattern &parseSelectStyle(const UnicodeString &pattern,
502 UParseError *parseError, UErrorCode &errorCode);
503
509 void clear();
510
517 void clearPatternAndSetApostropheMode(UMessagePatternApostropheMode mode) {
518 clear();
519 aposMode=mode;
520 }
521
527 UBool operator==(const MessagePattern &other) const;
528
534 inline UBool operator!=(const MessagePattern &other) const {
535 return !operator==(other);
536 }
537
542 int32_t hashCode() const;
543
548 UMessagePatternApostropheMode getApostropheMode() const {
549 return aposMode;
550 }
551
552 // Java has package-private jdkAposMode() here.
553 // In C++, this is declared in the MessageImpl class.
554
559 const UnicodeString &getPatternString() const {
560 return msg;
561 }
562
568 UBool hasNamedArguments() const {
569 return hasArgNames;
570 }
571
577 UBool hasNumberedArguments() const {
578 return hasArgNumbers;
579 }
580
592 static int32_t validateArgumentName(const UnicodeString &name);
593
604 UnicodeString autoQuoteApostropheDeep() const;
605
606 class Part;
607
614 int32_t countParts() const {
615 return partsLength;
616 }
617
624 const Part &getPart(int32_t i) const {
625 return parts[i];
626 }
627
635 UMessagePatternPartType getPartType(int32_t i) const {
636 return getPart(i).type;
637 }
638
646 int32_t getPatternIndex(int32_t partIndex) const {
647 return getPart(partIndex).index;
648 }
649
657 UnicodeString getSubstring(const Part &part) const {
658 return msg.tempSubString(part.index, part.length);
659 }
660
668 UBool partSubstringMatches(const Part &part, const UnicodeString &s) const {
669 return 0==msg.compare(part.index, part.length, s);
670 }
671
678 double getNumericValue(const Part &part) const;
679
686 double getPluralOffset(int32_t pluralStart) const;
687
696 int32_t getLimitPartIndex(int32_t start) const {
697 int32_t limit=getPart(start).limitPartIndex;
698 if(limit<start) {
699 return start;
700 }
701 return limit;
702 }
703
711 class Part : public UMemory {
712 public:
717 Part() {}
718
724 UMessagePatternPartType getType() const {
725 return type;
726 }
727
733 int32_t getIndex() const {
734 return index;
735 }
736
743 int32_t getLength() const {
744 return length;
745 }
746
753 int32_t getLimit() const {
754 return index+length;
755 }
756
763 int32_t getValue() const {
764 return value;
765 }
766
773 UMessagePatternArgType getArgType() const {
774 UMessagePatternPartType type=getType();
775 if(type==UMSGPAT_PART_TYPE_ARG_START || type==UMSGPAT_PART_TYPE_ARG_LIMIT) {
776 return (UMessagePatternArgType)value;
777 } else {
778 return UMSGPAT_ARG_TYPE_NONE;
779 }
780 }
781
789 static UBool hasNumericValue(UMessagePatternPartType type) {
790 return type==UMSGPAT_PART_TYPE_ARG_INT || type==UMSGPAT_PART_TYPE_ARG_DOUBLE;
791 }
792
798 UBool operator==(const Part &other) const;
799
805 inline UBool operator!=(const Part &other) const {
806 return !operator==(other);
807 }
808
813 int32_t hashCode() const {
814 return ((type*37+index)*37+length)*37+value;
815 }
816
817 private:
818 friend class MessagePattern;
819
820 static const int32_t MAX_LENGTH=0xffff;
821 static const int32_t MAX_VALUE=0x7fff;
822
823 // Some fields are not final because they are modified during pattern parsing.
824 // After pattern parsing, the parts are effectively immutable.
825 UMessagePatternPartType type;
826 int32_t index;
827 uint16_t length;
828 int16_t value;
829 int32_t limitPartIndex;
830 };
831
832 private:
833 void preParse(const UnicodeString &pattern, UParseError *parseError, UErrorCode &errorCode);
834
835 void postParse();
836
837 int32_t parseMessage(int32_t index, int32_t msgStartLength,
838 int32_t nestingLevel, UMessagePatternArgType parentType,
839 UParseError *parseError, UErrorCode &errorCode);
840
841 int32_t parseArg(int32_t index, int32_t argStartLength, int32_t nestingLevel,
842 UParseError *parseError, UErrorCode &errorCode);
843
844 int32_t parseSimpleStyle(int32_t index, UParseError *parseError, UErrorCode &errorCode);
845
846 int32_t parseChoiceStyle(int32_t index, int32_t nestingLevel,
847 UParseError *parseError, UErrorCode &errorCode);
848
849 int32_t parsePluralOrSelectStyle(UMessagePatternArgType argType, int32_t index, int32_t nestingLevel,
850 UParseError *parseError, UErrorCode &errorCode);
851
860 static int32_t parseArgNumber(const UnicodeString &s, int32_t start, int32_t limit);
861
862 int32_t parseArgNumber(int32_t start, int32_t limit) {
863 return parseArgNumber(msg, start, limit);
864 }
865
874 void parseDouble(int32_t start, int32_t limit, UBool allowInfinity,
875 UParseError *parseError, UErrorCode &errorCode);
876
877 // Java has package-private appendReducedApostrophes() here.
878 // In C++, this is declared in the MessageImpl class.
879
880 int32_t skipWhiteSpace(int32_t index);
881
882 int32_t skipIdentifier(int32_t index);
883
888 int32_t skipDouble(int32_t index);
889
890 static UBool isArgTypeChar(UChar32 c);
891
892 UBool isChoice(int32_t index);
893
894 UBool isPlural(int32_t index);
895
896 UBool isSelect(int32_t index);
897
898 UBool isOrdinal(int32_t index);
899
904 UBool inMessageFormatPattern(int32_t nestingLevel);
905
910 UBool inTopLevelChoiceMessage(int32_t nestingLevel, UMessagePatternArgType parentType);
911
912 void addPart(UMessagePatternPartType type, int32_t index, int32_t length,
913 int32_t value, UErrorCode &errorCode);
914
915 void addLimitPart(int32_t start,
916 UMessagePatternPartType type, int32_t index, int32_t length,
917 int32_t value, UErrorCode &errorCode);
918
919 void addArgDoublePart(double numericValue, int32_t start, int32_t length, UErrorCode &errorCode);
920
921 void setParseError(UParseError *parseError, int32_t index);
922
923 UBool init(UErrorCode &errorCode);
924 UBool copyStorage(const MessagePattern &other, UErrorCode &errorCode);
925
926 UMessagePatternApostropheMode aposMode;
927 UnicodeString msg;
928 // ArrayList<Part> parts=new ArrayList<Part>();
929 MessagePatternPartsList *partsList;
930 Part *parts;
931 int32_t partsLength;
932 // ArrayList<Double> numericValues;
933 MessagePatternDoubleList *numericValuesList;
934 double *numericValues;
935 int32_t numericValuesLength;
936 UBool hasArgNames;
937 UBool hasArgNumbers;
938 UBool needsAutoQuoting;
939 };
940
941 U_NAMESPACE_END
942
943 #endif // !UCONFIG_NO_FORMATTING
944
945 #endif // __MESSAGEPATTERN_H__
UMSGPAT_ARG_TYPE_SELECT
The argument is a SelectFormat with one or more (ARG_SELECTOR, message) pairs.
Definition: messagepattern.h:251
UMSGPAT_PART_TYPE_ARG_INT
An integer value, for example the offset or an explicit selector value in a PluralFormat style...
Definition: messagepattern.h:196
UMSGPAT_PART_TYPE_ARG_DOUBLE
A numeric value, for example the offset or an explicit selector value in a PluralFormat style...
Definition: messagepattern.h:204
icu::MessagePattern::getPart
const Part & getPart(int32_t i) const
Gets the i-th pattern "part".
Definition: messagepattern.h:624
UMSGPAT_APOS_DOUBLE_OPTIONAL
A literal apostrophe is represented by either a single or a double apostrophe pattern character...
Definition: messagepattern.h:80
UMSGPAT_PART_TYPE_ARG_NAME
The argument name.
Definition: messagepattern.h:171
UMSGPAT_ARG_NAME_NOT_VALID
Return value from MessagePattern.validateArgumentName() for when the string is invalid.
Definition: messagepattern.h:288
icu::MessagePattern::getLimitPartIndex
int32_t getLimitPartIndex(int32_t start) const
Returns the index of the ARG|MSG_LIMIT part corresponding to the ARG|MSG_START at start...
Definition: messagepattern.h:696
icu::MessagePattern::Part::getIndex
int32_t getIndex() const
Returns the pattern string index associated with this Part.
Definition: messagepattern.h:733
icu::MessagePattern::operator!=
UBool operator!=(const MessagePattern &other) const
Definition: messagepattern.h:534
unistr.h
C++ API: Unicode String.
icu::operator==
U_EXPORT UBool operator==(const StringPiece &x, const StringPiece &y)
Global operator == for StringPiece.
UMSGPAT_ARG_TYPE_NONE
The argument has no specified type.
Definition: messagepattern.h:224
icu::MessagePattern::partSubstringMatches
UBool partSubstringMatches(const Part &part, const UnicodeString &s) const
Compares the part&#39;s substring with the input string s.
Definition: messagepattern.h:668
icu::MessagePattern::Part::getLimit
int32_t getLimit() const
Returns the pattern string limit (exclusive-end) index associated with this Part. ...
Definition: messagepattern.h:753
icu::MessagePattern::hasNumberedArguments
UBool hasNumberedArguments() const
Does the parsed pattern have numbered arguments like {2}?
Definition: messagepattern.h:577
UMSGPAT_PART_TYPE_ARG_STYLE
The argument style text.
Definition: messagepattern.h:183
icu::MessagePattern::hasNamedArguments
UBool hasNamedArguments() const
Does the parsed pattern have named arguments like {first_name}?
Definition: messagepattern.h:568
icu::MessagePattern::Part::hasNumericValue
static UBool hasNumericValue(UMessagePatternPartType type)
Indicates whether the Part type has a numeric value.
Definition: messagepattern.h:789
UMessagePatternPartType
UMessagePatternPartType
MessagePattern::Part type constants.
Definition: messagepattern.h:100
UMSGPAT_PART_TYPE_ARG_NUMBER
The argument number, provided by the value.
Definition: messagepattern.h:165
UMSGPAT_ARG_TYPE_SELECTORDINAL
The argument is an ordinal-number PluralFormat with the same style parts sequence and semantics as UM...
Definition: messagepattern.h:257
icu::MessagePattern::clearPatternAndSetApostropheMode
void clearPatternAndSetApostropheMode(UMessagePatternApostropheMode mode)
Clears this MessagePattern and sets the UMessagePatternApostropheMode.
Definition: messagepattern.h:517
icu::MessagePattern
Parses and represents ICU MessageFormat patterns.
Definition: messagepattern.h:360
UMSGPAT_ARG_TYPE_CHOICE
The argument is a ChoiceFormat with one or more ((ARG_INT | ARG_DOUBLE), ARG_SELECTOR, message) tuples.
Definition: messagepattern.h:236
icu::MessagePattern::Part::operator!=
UBool operator!=(const Part &other) const
Definition: messagepattern.h:805
icu::MessagePattern::getPatternString
const UnicodeString & getPatternString() const
Definition: messagepattern.h:559
icu::MessagePattern::getApostropheMode
UMessagePatternApostropheMode getApostropheMode() const
Definition: messagepattern.h:548
U_NAMESPACE_BEGIN
#define U_NAMESPACE_BEGIN
This is used to begin a declaration of a public ICU C++ API.
Definition: uversion.h:131
UMSGPAT_ARG_NAME_NOT_NUMBER
Return value from MessagePattern.validateArgumentName() for when the string is a valid "pattern ident...
Definition: messagepattern.h:279
icu::MessagePattern::countParts
int32_t countParts() const
Returns the number of "parts" created by parsing the pattern string.
Definition: messagepattern.h:614
UMSGPAT_APOS_DOUBLE_REQUIRED
A literal apostrophe must be represented by a double apostrophe pattern character.
Definition: messagepattern.h:89
icu::UnicodeString::tempSubString
UnicodeString tempSubString(int32_t start=0, int32_t length=INT32_MAX) const
Create a temporary substring for the specified range.
UChar32
int32_t UChar32
Define UChar32 as a type for single Unicode code points.
Definition: umachine.h:396
UMSGPAT_PART_TYPE_INSERT_CHAR
Indicates that a syntax character needs to be inserted for auto-quoting.
Definition: messagepattern.h:134
icu::MessagePattern::getSubstring
UnicodeString getSubstring(const Part &part) const
Returns the substring of the pattern string indicated by the Part.
Definition: messagepattern.h:657
icu::MessagePattern::getPatternIndex
int32_t getPatternIndex(int32_t partIndex) const
Returns the pattern index of the specified pattern "part".
Definition: messagepattern.h:646
UMSGPAT_PART_TYPE_MSG_START
Start of a message pattern (main or nested).
Definition: messagepattern.h:110
UMSGPAT_PART_TYPE_ARG_LIMIT
End of an argument.
Definition: messagepattern.h:160
U_NAMESPACE_END
#define U_NAMESPACE_END
This is used to end a declaration of a public ICU C++ API.
Definition: uversion.h:132
parseerr.h
C API: Parse Error Information.
UMSGPAT_PART_TYPE_MSG_LIMIT
End of a message pattern (main or nested).
Definition: messagepattern.h:119
UMSGPAT_PART_TYPE_ARG_SELECTOR
A selector substring in a "complex" argument style.
Definition: messagepattern.h:189
UMSGPAT_PART_TYPE_SKIP_SYNTAX
Indicates a substring of the pattern string which is to be skipped when formatting.
Definition: messagepattern.h:127
UErrorCode
UErrorCode
Error code to replace exception handling, so that the code is compatible with all C++ compilers...
Definition: utypes.h:396
icu::MessagePattern::Part::Part
Part()
Default constructor, do not use.
Definition: messagepattern.h:717
icu::MessagePattern::Part
A message pattern "part", representing a pattern parsing event.
Definition: messagepattern.h:711
UMSGPAT_PART_TYPE_REPLACE_NUMBER
Indicates a syntactic (non-escaped) # symbol in a plural variant.
Definition: messagepattern.h:142
icu::MessagePattern::Part::getValue
int32_t getValue() const
Returns a value associated with this part.
Definition: messagepattern.h:763
UMSGPAT_ARG_TYPE_PLURAL
The argument is a cardinal-number PluralFormat with an optional ARG_INT or ARG_DOUBLE offset (e...
Definition: messagepattern.h:246
UMSGPAT_PART_TYPE_ARG_TYPE
The argument type.
Definition: messagepattern.h:177
UMessagePatternArgType
UMessagePatternArgType
Argument type constants.
Definition: messagepattern.h:219
icu::MessagePattern::getPartType
UMessagePatternPartType getPartType(int32_t i) const
Returns the UMessagePatternPartType of the i-th pattern "part".
Definition: messagepattern.h:635
UParseError
A UParseError struct is used to returned detailed information about parsing errors.
Definition: parseerr.h:58
utypes.h
Basic definitions for ICU, for both C and C++ APIs.
U_COMMON_API
#define U_COMMON_API
Set to export library symbols from inside the common library, and to import them from outside...
Definition: utypes.h:359
icu::UnicodeString
UnicodeString is a string class that stores Unicode characters directly and provides similar function...
Definition: unistr.h:286
icu::MessagePattern::Part::getLength
int32_t getLength() const
Returns the length of the pattern substring associated with this Part.
Definition: messagepattern.h:743
UMSGPAT_ARG_TYPE_SIMPLE
The argument has a "simple" type which is provided by the ARG_TYPE part.
Definition: messagepattern.h:230
UMSGPAT_PART_TYPE_ARG_START
Start of an argument.
Definition: messagepattern.h:153
icu::UObject
UObject is the common ICU "boilerplate" class.
Definition: uobject.h:223
icu::UMemory
UMemory is the common ICU base class.
Definition: uobject.h:112
UMessagePatternApostropheMode
UMessagePatternApostropheMode
Mode for when an apostrophe starts quoted literal text for MessageFormat output.
Definition: messagepattern.h:68
icu::MessagePattern::Part::getType
UMessagePatternPartType getType() const
Returns the type of this part.
Definition: messagepattern.h:724
UBool
int8_t UBool
The ICU boolean type.
Definition: umachine.h:236
icu::MessagePattern::Part::hashCode
int32_t hashCode() const
Definition: messagepattern.h:813
icu::MessagePattern::Part::getArgType
UMessagePatternArgType getArgType() const
Returns the argument type if this part is of type ARG_START or ARG_LIMIT, otherwise UMSGPAT_ARG_TYPE_...
Definition: messagepattern.h:773