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gecko/intl/icu/source/common/messagepattern.cpp
Jeff Walden 805dd78c93 Bug 924839 - Update our embedded ICU to 52.1, plus a very few local patches. r=lots of people, see subsequent lines in this commit message for the original subcomponents (merged together for landing), and the original bug for the original patch divisions 
Bug 924839 - Remove a patch already part of ICU 52.1.  See http://bugs.icu-project.org/trac/ticket/10283 but also note the relevant code was removed completely upstream.  r=glandium
* * *
Bug 924839 - Remove another patch already part of ICU 52.1.  See http://bugs.icu-project.org/trac/ticket/10290 for that.  r=gaston
* * *
Bug 924839 - Remove another patch already in ICU 52.1.  See http://bugs.icu-project.org/trac/ticket/10045 for more.  r=Norbert
* * *
Bug 924839 - Remove another patch already applied upstream.  See http://bugs.icu-project.org/trac/changeset/32937 for more.  r=gaston
* * *
Bug 924839 - Update the ICU update script to update to 52.1, *without* applying any of our local patches.  r=glandium
* * *
Bug 924839 - Make the ICU update script only do updating within intl/icu/source and nowhere else.  r=glandium
* * *
Bug 924839 - Implement the changes that would be made by |cd intl/; ./update-icu.sh http://source.icu-project.org/repos/icu/icu/tags/release-52-1/;|, run with the prior changesets' changes made (thus not applying any of our local patches).  These changes don't actually work without subsequent adjustments, but this provides a codebase upon which those adjustments can be made, for the purpose of generating local patches to be kept in intl/icu-patches/.  rs=the-usual-suspects
* * *
Bug 924839 - Update the bug 899722 local patch to make runConfigureICU not override CC/CXX on BSD systems.  r=gaston
* * *
Bug 924839 - Update the bug 724533 patch that makes ICU builds with MozillaBuild on Windows.  r=glandium
* * *
Bug 924839 - Import an upstream patch fixing the genrb tool to properly handle the -R (--omitCollationRules) option.  See http://bugs.icu-project.org/trac/ticket/10043 for the original bug report and a link to the ultimate upstream landing.  r=Norbert
* * *
Bug 924839 - Import the upstream fix for http://bugs.icu-project.org/trac/ticket/10486 so that ICU with -DU_USING_ICU_NAMESPACE=0 will compile on Windows.  r=Norbert
* * *
Bug 924839 - Adjust the update script to update ICU, then to apply all local patches (rather than skipping the second step).  Thus if the update script is properly run, now, the final result should be no changes at all to the tree.  NOT REVIEWED YET
* * *
Bug 924839 - Update jstests that depend on CLDR locale data to match CLDR 24.  r=Norbert
2013-11-12 16:23:48 -08:00

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/*
*******************************************************************************
* Copyright (C) 2011-2012, International Business Machines
* Corporation and others. All Rights Reserved.
*******************************************************************************
* file name: messagepattern.cpp
* encoding: US-ASCII
* tab size: 8 (not used)
* indentation:4
*
* created on: 2011mar14
* created by: Markus W. Scherer
*/
#include "unicode/utypes.h"
#if !UCONFIG_NO_FORMATTING
#include "unicode/messagepattern.h"
#include "unicode/unistr.h"
#include "unicode/utf16.h"
#include "cmemory.h"
#include "cstring.h"
#include "messageimpl.h"
#include "patternprops.h"
#include "putilimp.h"
#include "uassert.h"
U_NAMESPACE_BEGIN
// Unicode character/code point constants ---------------------------------- ***
static const UChar u_pound=0x23;
static const UChar u_apos=0x27;
static const UChar u_plus=0x2B;
static const UChar u_comma=0x2C;
static const UChar u_minus=0x2D;
static const UChar u_dot=0x2E;
static const UChar u_colon=0x3A;
static const UChar u_lessThan=0x3C;
static const UChar u_equal=0x3D;
static const UChar u_A=0x41;
static const UChar u_C=0x43;
static const UChar u_D=0x44;
static const UChar u_E=0x45;
static const UChar u_H=0x48;
static const UChar u_I=0x49;
static const UChar u_L=0x4C;
static const UChar u_N=0x4E;
static const UChar u_O=0x4F;
static const UChar u_P=0x50;
static const UChar u_R=0x52;
static const UChar u_S=0x53;
static const UChar u_T=0x54;
static const UChar u_U=0x55;
static const UChar u_Z=0x5A;
static const UChar u_a=0x61;
static const UChar u_c=0x63;
static const UChar u_d=0x64;
static const UChar u_e=0x65;
static const UChar u_f=0x66;
static const UChar u_h=0x68;
static const UChar u_i=0x69;
static const UChar u_l=0x6C;
static const UChar u_n=0x6E;
static const UChar u_o=0x6F;
static const UChar u_p=0x70;
static const UChar u_r=0x72;
static const UChar u_s=0x73;
static const UChar u_t=0x74;
static const UChar u_u=0x75;
static const UChar u_z=0x7A;
static const UChar u_leftCurlyBrace=0x7B;
static const UChar u_pipe=0x7C;
static const UChar u_rightCurlyBrace=0x7D;
static const UChar u_lessOrEqual=0x2264; // U+2264 is <=
static const UChar kOffsetColon[]={ // "offset:"
u_o, u_f, u_f, u_s, u_e, u_t, u_colon
};
static const UChar kOther[]={ // "other"
u_o, u_t, u_h, u_e, u_r
};
// MessagePatternList ------------------------------------------------------ ***
template<typename T, int32_t stackCapacity>
class MessagePatternList : public UMemory {
public:
MessagePatternList() {}
void copyFrom(const MessagePatternList<T, stackCapacity> &other,
int32_t length,
UErrorCode &errorCode);
UBool ensureCapacityForOneMore(int32_t oldLength, UErrorCode &errorCode);
UBool equals(const MessagePatternList<T, stackCapacity> &other, int32_t length) const {
for(int32_t i=0; i<length; ++i) {
if(a[i]!=other.a[i]) { return FALSE; }
}
return TRUE;
}
MaybeStackArray<T, stackCapacity> a;
};
template<typename T, int32_t stackCapacity>
void
MessagePatternList<T, stackCapacity>::copyFrom(
const MessagePatternList<T, stackCapacity> &other,
int32_t length,
UErrorCode &errorCode) {
if(U_SUCCESS(errorCode) && length>0) {
if(length>a.getCapacity() && NULL==a.resize(length)) {
errorCode=U_MEMORY_ALLOCATION_ERROR;
return;
}
uprv_memcpy(a.getAlias(), other.a.getAlias(), length*sizeof(T));
}
}
template<typename T, int32_t stackCapacity>
UBool
MessagePatternList<T, stackCapacity>::ensureCapacityForOneMore(int32_t oldLength, UErrorCode &errorCode) {
if(U_FAILURE(errorCode)) {
return FALSE;
}
if(a.getCapacity()>oldLength || a.resize(2*oldLength, oldLength)!=NULL) {
return TRUE;
}
errorCode=U_MEMORY_ALLOCATION_ERROR;
return FALSE;
}
// MessagePatternList specializations -------------------------------------- ***
class MessagePatternDoubleList : public MessagePatternList<double, 8> {
};
class MessagePatternPartsList : public MessagePatternList<MessagePattern::Part, 32> {
};
// MessagePattern constructors etc. ---------------------------------------- ***
MessagePattern::MessagePattern(UErrorCode &errorCode)
: aposMode(UCONFIG_MSGPAT_DEFAULT_APOSTROPHE_MODE),
partsList(NULL), parts(NULL), partsLength(0),
numericValuesList(NULL), numericValues(NULL), numericValuesLength(0),
hasArgNames(FALSE), hasArgNumbers(FALSE), needsAutoQuoting(FALSE) {
init(errorCode);
}
MessagePattern::MessagePattern(UMessagePatternApostropheMode mode, UErrorCode &errorCode)
: aposMode(mode),
partsList(NULL), parts(NULL), partsLength(0),
numericValuesList(NULL), numericValues(NULL), numericValuesLength(0),
hasArgNames(FALSE), hasArgNumbers(FALSE), needsAutoQuoting(FALSE) {
init(errorCode);
}
MessagePattern::MessagePattern(const UnicodeString &pattern, UParseError *parseError, UErrorCode &errorCode)
: aposMode(UCONFIG_MSGPAT_DEFAULT_APOSTROPHE_MODE),
partsList(NULL), parts(NULL), partsLength(0),
numericValuesList(NULL), numericValues(NULL), numericValuesLength(0),
hasArgNames(FALSE), hasArgNumbers(FALSE), needsAutoQuoting(FALSE) {
if(init(errorCode)) {
parse(pattern, parseError, errorCode);
}
}
UBool
MessagePattern::init(UErrorCode &errorCode) {
if(U_FAILURE(errorCode)) {
return FALSE;
}
partsList=new MessagePatternPartsList();
if(partsList==NULL) {
errorCode=U_MEMORY_ALLOCATION_ERROR;
return FALSE;
}
parts=partsList->a.getAlias();
return TRUE;
}
MessagePattern::MessagePattern(const MessagePattern &other)
: UObject(other), aposMode(other.aposMode), msg(other.msg),
partsList(NULL), parts(NULL), partsLength(0),
numericValuesList(NULL), numericValues(NULL), numericValuesLength(0),
hasArgNames(other.hasArgNames), hasArgNumbers(other.hasArgNumbers),
needsAutoQuoting(other.needsAutoQuoting) {
UErrorCode errorCode=U_ZERO_ERROR;
if(!copyStorage(other, errorCode)) {
clear();
}
}
MessagePattern &
MessagePattern::operator=(const MessagePattern &other) {
if(this==&other) {
return *this;
}
aposMode=other.aposMode;
msg=other.msg;
hasArgNames=other.hasArgNames;
hasArgNumbers=other.hasArgNumbers;
needsAutoQuoting=other.needsAutoQuoting;
UErrorCode errorCode=U_ZERO_ERROR;
if(!copyStorage(other, errorCode)) {
clear();
}
return *this;
}
UBool
MessagePattern::copyStorage(const MessagePattern &other, UErrorCode &errorCode) {
if(U_FAILURE(errorCode)) {
return FALSE;
}
parts=NULL;
partsLength=0;
numericValues=NULL;
numericValuesLength=0;
if(partsList==NULL) {
partsList=new MessagePatternPartsList();
if(partsList==NULL) {
errorCode=U_MEMORY_ALLOCATION_ERROR;
return FALSE;
}
parts=partsList->a.getAlias();
}
if(other.partsLength>0) {
partsList->copyFrom(*other.partsList, other.partsLength, errorCode);
if(U_FAILURE(errorCode)) {
return FALSE;
}
parts=partsList->a.getAlias();
partsLength=other.partsLength;
}
if(other.numericValuesLength>0) {
if(numericValuesList==NULL) {
numericValuesList=new MessagePatternDoubleList();
if(numericValuesList==NULL) {
errorCode=U_MEMORY_ALLOCATION_ERROR;
return FALSE;
}
numericValues=numericValuesList->a.getAlias();
}
numericValuesList->copyFrom(
*other.numericValuesList, other.numericValuesLength, errorCode);
if(U_FAILURE(errorCode)) {
return FALSE;
}
numericValues=numericValuesList->a.getAlias();
numericValuesLength=other.numericValuesLength;
}
return TRUE;
}
MessagePattern::~MessagePattern() {
delete partsList;
delete numericValuesList;
}
// MessagePattern API ------------------------------------------------------ ***
MessagePattern &
MessagePattern::parse(const UnicodeString &pattern, UParseError *parseError, UErrorCode &errorCode) {
preParse(pattern, parseError, errorCode);
parseMessage(0, 0, 0, UMSGPAT_ARG_TYPE_NONE, parseError, errorCode);
postParse();
return *this;
}
MessagePattern &
MessagePattern::parseChoiceStyle(const UnicodeString &pattern,
UParseError *parseError, UErrorCode &errorCode) {
preParse(pattern, parseError, errorCode);
parseChoiceStyle(0, 0, parseError, errorCode);
postParse();
return *this;
}
MessagePattern &
MessagePattern::parsePluralStyle(const UnicodeString &pattern,
UParseError *parseError, UErrorCode &errorCode) {
preParse(pattern, parseError, errorCode);
parsePluralOrSelectStyle(UMSGPAT_ARG_TYPE_PLURAL, 0, 0, parseError, errorCode);
postParse();
return *this;
}
MessagePattern &
MessagePattern::parseSelectStyle(const UnicodeString &pattern,
UParseError *parseError, UErrorCode &errorCode) {
preParse(pattern, parseError, errorCode);
parsePluralOrSelectStyle(UMSGPAT_ARG_TYPE_SELECT, 0, 0, parseError, errorCode);
postParse();
return *this;
}
void
MessagePattern::clear() {
// Mostly the same as preParse().
msg.remove();
hasArgNames=hasArgNumbers=FALSE;
needsAutoQuoting=FALSE;
partsLength=0;
numericValuesLength=0;
}
UBool
MessagePattern::operator==(const MessagePattern &other) const {
if(this==&other) {
return TRUE;
}
return
aposMode==other.aposMode &&
msg==other.msg &&
// parts.equals(o.parts)
partsLength==other.partsLength &&
(partsLength==0 || partsList->equals(*other.partsList, partsLength));
// No need to compare numericValues if msg and parts are the same.
}
int32_t
MessagePattern::hashCode() const {
int32_t hash=(aposMode*37+msg.hashCode())*37+partsLength;
for(int32_t i=0; i<partsLength; ++i) {
hash=hash*37+parts[i].hashCode();
}
return hash;
}
int32_t
MessagePattern::validateArgumentName(const UnicodeString &name) {
if(!PatternProps::isIdentifier(name.getBuffer(), name.length())) {
return UMSGPAT_ARG_NAME_NOT_VALID;
}
return parseArgNumber(name, 0, name.length());
}
UnicodeString
MessagePattern::autoQuoteApostropheDeep() const {
if(!needsAutoQuoting) {
return msg;
}
UnicodeString modified(msg);
// Iterate backward so that the insertion indexes do not change.
int32_t count=countParts();
for(int32_t i=count; i>0;) {
const Part &part=getPart(--i);
if(part.getType()==UMSGPAT_PART_TYPE_INSERT_CHAR) {
modified.insert(part.index, (UChar)part.value);
}
}
return modified;
}
double
MessagePattern::getNumericValue(const Part &part) const {
UMessagePatternPartType type=part.type;
if(type==UMSGPAT_PART_TYPE_ARG_INT) {
return part.value;
} else if(type==UMSGPAT_PART_TYPE_ARG_DOUBLE) {
return numericValues[part.value];
} else {
return UMSGPAT_NO_NUMERIC_VALUE;
}
}
/**
* Returns the "offset:" value of a PluralFormat argument, or 0 if none is specified.
* @param pluralStart the index of the first PluralFormat argument style part. (0..countParts()-1)
* @return the "offset:" value.
* @draft ICU 4.8
*/
double
MessagePattern::getPluralOffset(int32_t pluralStart) const {
const Part &part=getPart(pluralStart);
if(Part::hasNumericValue(part.type)) {
return getNumericValue(part);
} else {
return 0;
}
}
// MessagePattern::Part ---------------------------------------------------- ***
UBool
MessagePattern::Part::operator==(const Part &other) const {
if(this==&other) {
return TRUE;
}
return
type==other.type &&
index==other.index &&
length==other.length &&
value==other.value &&
limitPartIndex==other.limitPartIndex;
}
// MessagePattern parser --------------------------------------------------- ***
void
MessagePattern::preParse(const UnicodeString &pattern, UParseError *parseError, UErrorCode &errorCode) {
if(U_FAILURE(errorCode)) {
return;
}
if(parseError!=NULL) {
parseError->line=0;
parseError->offset=0;
parseError->preContext[0]=0;
parseError->postContext[0]=0;
}
msg=pattern;
hasArgNames=hasArgNumbers=FALSE;
needsAutoQuoting=FALSE;
partsLength=0;
numericValuesLength=0;
}
void
MessagePattern::postParse() {
if(partsList!=NULL) {
parts=partsList->a.getAlias();
}
if(numericValuesList!=NULL) {
numericValues=numericValuesList->a.getAlias();
}
}
int32_t
MessagePattern::parseMessage(int32_t index, int32_t msgStartLength,
int32_t nestingLevel, UMessagePatternArgType parentType,
UParseError *parseError, UErrorCode &errorCode) {
if(U_FAILURE(errorCode)) {
return 0;
}
if(nestingLevel>Part::MAX_VALUE) {
errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
return 0;
}
int32_t msgStart=partsLength;
addPart(UMSGPAT_PART_TYPE_MSG_START, index, msgStartLength, nestingLevel, errorCode);
index+=msgStartLength;
for(;;) { // while(index<msg.length()) with U_FAILURE(errorCode) check
if(U_FAILURE(errorCode)) {
return 0;
}
if(index>=msg.length()) {
break;
}
UChar c=msg.charAt(index++);
if(c==u_apos) {
if(index==msg.length()) {
// The apostrophe is the last character in the pattern.
// Add a Part for auto-quoting.
addPart(UMSGPAT_PART_TYPE_INSERT_CHAR, index, 0,
u_apos, errorCode); // value=char to be inserted
needsAutoQuoting=TRUE;
} else {
c=msg.charAt(index);
if(c==u_apos) {
// double apostrophe, skip the second one
addPart(UMSGPAT_PART_TYPE_SKIP_SYNTAX, index++, 1, 0, errorCode);
} else if(
aposMode==UMSGPAT_APOS_DOUBLE_REQUIRED ||
c==u_leftCurlyBrace || c==u_rightCurlyBrace ||
(parentType==UMSGPAT_ARG_TYPE_CHOICE && c==u_pipe) ||
(UMSGPAT_ARG_TYPE_HAS_PLURAL_STYLE(parentType) && c==u_pound)
) {
// skip the quote-starting apostrophe
addPart(UMSGPAT_PART_TYPE_SKIP_SYNTAX, index-1, 1, 0, errorCode);
// find the end of the quoted literal text
for(;;) {
index=msg.indexOf(u_apos, index+1);
if(index>=0) {
if(/*(index+1)<msg.length() &&*/ msg.charAt(index+1)==u_apos) {
// double apostrophe inside quoted literal text
// still encodes a single apostrophe, skip the second one
addPart(UMSGPAT_PART_TYPE_SKIP_SYNTAX, ++index, 1, 0, errorCode);
} else {
// skip the quote-ending apostrophe
addPart(UMSGPAT_PART_TYPE_SKIP_SYNTAX, index++, 1, 0, errorCode);
break;
}
} else {
// The quoted text reaches to the end of the of the message.
index=msg.length();
// Add a Part for auto-quoting.
addPart(UMSGPAT_PART_TYPE_INSERT_CHAR, index, 0,
u_apos, errorCode); // value=char to be inserted
needsAutoQuoting=TRUE;
break;
}
}
} else {
// Interpret the apostrophe as literal text.
// Add a Part for auto-quoting.
addPart(UMSGPAT_PART_TYPE_INSERT_CHAR, index, 0,
u_apos, errorCode); // value=char to be inserted
needsAutoQuoting=TRUE;
}
}
} else if(UMSGPAT_ARG_TYPE_HAS_PLURAL_STYLE(parentType) && c==u_pound) {
// The unquoted # in a plural message fragment will be replaced
// with the (number-offset).
addPart(UMSGPAT_PART_TYPE_REPLACE_NUMBER, index-1, 1, 0, errorCode);
} else if(c==u_leftCurlyBrace) {
index=parseArg(index-1, 1, nestingLevel, parseError, errorCode);
} else if((nestingLevel>0 && c==u_rightCurlyBrace) ||
(parentType==UMSGPAT_ARG_TYPE_CHOICE && c==u_pipe)) {
// Finish the message before the terminator.
// In a choice style, report the "}" substring only for the following ARG_LIMIT,
// not for this MSG_LIMIT.
int32_t limitLength=(parentType==UMSGPAT_ARG_TYPE_CHOICE && c==u_rightCurlyBrace) ? 0 : 1;
addLimitPart(msgStart, UMSGPAT_PART_TYPE_MSG_LIMIT, index-1, limitLength,
nestingLevel, errorCode);
if(parentType==UMSGPAT_ARG_TYPE_CHOICE) {
// Let the choice style parser see the '}' or '|'.
return index-1;
} else {
// continue parsing after the '}'
return index;
}
} // else: c is part of literal text
}
if(nestingLevel>0 && !inTopLevelChoiceMessage(nestingLevel, parentType)) {
setParseError(parseError, 0); // Unmatched '{' braces in message.
errorCode=U_UNMATCHED_BRACES;
return 0;
}
addLimitPart(msgStart, UMSGPAT_PART_TYPE_MSG_LIMIT, index, 0, nestingLevel, errorCode);
return index;
}
int32_t
MessagePattern::parseArg(int32_t index, int32_t argStartLength, int32_t nestingLevel,
UParseError *parseError, UErrorCode &errorCode) {
int32_t argStart=partsLength;
UMessagePatternArgType argType=UMSGPAT_ARG_TYPE_NONE;
addPart(UMSGPAT_PART_TYPE_ARG_START, index, argStartLength, argType, errorCode);
if(U_FAILURE(errorCode)) {
return 0;
}
int32_t nameIndex=index=skipWhiteSpace(index+argStartLength);
if(index==msg.length()) {
setParseError(parseError, 0); // Unmatched '{' braces in message.
errorCode=U_UNMATCHED_BRACES;
return 0;
}
// parse argument name or number
index=skipIdentifier(index);
int32_t number=parseArgNumber(nameIndex, index);
if(number>=0) {
int32_t length=index-nameIndex;
if(length>Part::MAX_LENGTH || number>Part::MAX_VALUE) {
setParseError(parseError, nameIndex); // Argument number too large.
errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
return 0;
}
hasArgNumbers=TRUE;
addPart(UMSGPAT_PART_TYPE_ARG_NUMBER, nameIndex, length, number, errorCode);
} else if(number==UMSGPAT_ARG_NAME_NOT_NUMBER) {
int32_t length=index-nameIndex;
if(length>Part::MAX_LENGTH) {
setParseError(parseError, nameIndex); // Argument name too long.
errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
return 0;
}
hasArgNames=TRUE;
addPart(UMSGPAT_PART_TYPE_ARG_NAME, nameIndex, length, 0, errorCode);
} else { // number<-1 (ARG_NAME_NOT_VALID)
setParseError(parseError, nameIndex); // Bad argument syntax.
errorCode=U_PATTERN_SYNTAX_ERROR;
return 0;
}
index=skipWhiteSpace(index);
if(index==msg.length()) {
setParseError(parseError, 0); // Unmatched '{' braces in message.
errorCode=U_UNMATCHED_BRACES;
return 0;
}
UChar c=msg.charAt(index);
if(c==u_rightCurlyBrace) {
// all done
} else if(c!=u_comma) {
setParseError(parseError, nameIndex); // Bad argument syntax.
errorCode=U_PATTERN_SYNTAX_ERROR;
return 0;
} else /* ',' */ {
// parse argument type: case-sensitive a-zA-Z
int32_t typeIndex=index=skipWhiteSpace(index+1);
while(index<msg.length() && isArgTypeChar(msg.charAt(index))) {
++index;
}
int32_t length=index-typeIndex;
index=skipWhiteSpace(index);
if(index==msg.length()) {
setParseError(parseError, 0); // Unmatched '{' braces in message.
errorCode=U_UNMATCHED_BRACES;
return 0;
}
if(length==0 || ((c=msg.charAt(index))!=u_comma && c!=u_rightCurlyBrace)) {
setParseError(parseError, nameIndex); // Bad argument syntax.
errorCode=U_PATTERN_SYNTAX_ERROR;
return 0;
}
if(length>Part::MAX_LENGTH) {
setParseError(parseError, nameIndex); // Argument type name too long.
errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
return 0;
}
argType=UMSGPAT_ARG_TYPE_SIMPLE;
if(length==6) {
// case-insensitive comparisons for complex-type names
if(isChoice(typeIndex)) {
argType=UMSGPAT_ARG_TYPE_CHOICE;
} else if(isPlural(typeIndex)) {
argType=UMSGPAT_ARG_TYPE_PLURAL;
} else if(isSelect(typeIndex)) {
argType=UMSGPAT_ARG_TYPE_SELECT;
}
} else if(length==13) {
if(isSelect(typeIndex) && isOrdinal(typeIndex+6)) {
argType=UMSGPAT_ARG_TYPE_SELECTORDINAL;
}
}
// change the ARG_START type from NONE to argType
partsList->a[argStart].value=(int16_t)argType;
if(argType==UMSGPAT_ARG_TYPE_SIMPLE) {
addPart(UMSGPAT_PART_TYPE_ARG_TYPE, typeIndex, length, 0, errorCode);
}
// look for an argument style (pattern)
if(c==u_rightCurlyBrace) {
if(argType!=UMSGPAT_ARG_TYPE_SIMPLE) {
setParseError(parseError, nameIndex); // No style field for complex argument.
errorCode=U_PATTERN_SYNTAX_ERROR;
return 0;
}
} else /* ',' */ {
++index;
if(argType==UMSGPAT_ARG_TYPE_SIMPLE) {
index=parseSimpleStyle(index, parseError, errorCode);
} else if(argType==UMSGPAT_ARG_TYPE_CHOICE) {
index=parseChoiceStyle(index, nestingLevel, parseError, errorCode);
} else {
index=parsePluralOrSelectStyle(argType, index, nestingLevel, parseError, errorCode);
}
}
}
// Argument parsing stopped on the '}'.
addLimitPart(argStart, UMSGPAT_PART_TYPE_ARG_LIMIT, index, 1, argType, errorCode);
return index+1;
}
int32_t
MessagePattern::parseSimpleStyle(int32_t index, UParseError *parseError, UErrorCode &errorCode) {
if(U_FAILURE(errorCode)) {
return 0;
}
int32_t start=index;
int32_t nestedBraces=0;
while(index<msg.length()) {
UChar c=msg.charAt(index++);
if(c==u_apos) {
// Treat apostrophe as quoting but include it in the style part.
// Find the end of the quoted literal text.
index=msg.indexOf(u_apos, index);
if(index<0) {
// Quoted literal argument style text reaches to the end of the message.
setParseError(parseError, start);
errorCode=U_PATTERN_SYNTAX_ERROR;
return 0;
}
// skip the quote-ending apostrophe
++index;
} else if(c==u_leftCurlyBrace) {
++nestedBraces;
} else if(c==u_rightCurlyBrace) {
if(nestedBraces>0) {
--nestedBraces;
} else {
int32_t length=--index-start;
if(length>Part::MAX_LENGTH) {
setParseError(parseError, start); // Argument style text too long.
errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
return 0;
}
addPart(UMSGPAT_PART_TYPE_ARG_STYLE, start, length, 0, errorCode);
return index;
}
} // c is part of literal text
}
setParseError(parseError, 0); // Unmatched '{' braces in message.
errorCode=U_UNMATCHED_BRACES;
return 0;
}
int32_t
MessagePattern::parseChoiceStyle(int32_t index, int32_t nestingLevel,
UParseError *parseError, UErrorCode &errorCode) {
if(U_FAILURE(errorCode)) {
return 0;
}
int32_t start=index;
index=skipWhiteSpace(index);
if(index==msg.length() || msg.charAt(index)==u_rightCurlyBrace) {
setParseError(parseError, 0); // Missing choice argument pattern.
errorCode=U_PATTERN_SYNTAX_ERROR;
return 0;
}
for(;;) {
// The choice argument style contains |-separated (number, separator, message) triples.
// Parse the number.
int32_t numberIndex=index;
index=skipDouble(index);
int32_t length=index-numberIndex;
if(length==0) {
setParseError(parseError, start); // Bad choice pattern syntax.
errorCode=U_PATTERN_SYNTAX_ERROR;
return 0;
}
if(length>Part::MAX_LENGTH) {
setParseError(parseError, numberIndex); // Choice number too long.
errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
return 0;
}
parseDouble(numberIndex, index, TRUE, parseError, errorCode); // adds ARG_INT or ARG_DOUBLE
if(U_FAILURE(errorCode)) {
return 0;
}
// Parse the separator.
index=skipWhiteSpace(index);
if(index==msg.length()) {
setParseError(parseError, start); // Bad choice pattern syntax.
errorCode=U_PATTERN_SYNTAX_ERROR;
return 0;
}
UChar c=msg.charAt(index);
if(!(c==u_pound || c==u_lessThan || c==u_lessOrEqual)) { // U+2264 is <=
setParseError(parseError, start); // Expected choice separator (#<\u2264) instead of c.
errorCode=U_PATTERN_SYNTAX_ERROR;
return 0;
}
addPart(UMSGPAT_PART_TYPE_ARG_SELECTOR, index, 1, 0, errorCode);
// Parse the message fragment.
index=parseMessage(++index, 0, nestingLevel+1, UMSGPAT_ARG_TYPE_CHOICE, parseError, errorCode);
if(U_FAILURE(errorCode)) {
return 0;
}
// parseMessage(..., CHOICE) returns the index of the terminator, or msg.length().
if(index==msg.length()) {
return index;
}
if(msg.charAt(index)==u_rightCurlyBrace) {
if(!inMessageFormatPattern(nestingLevel)) {
setParseError(parseError, start); // Bad choice pattern syntax.
errorCode=U_PATTERN_SYNTAX_ERROR;
return 0;
}
return index;
} // else the terminator is '|'
index=skipWhiteSpace(index+1);
}
}
int32_t
MessagePattern::parsePluralOrSelectStyle(UMessagePatternArgType argType,
int32_t index, int32_t nestingLevel,
UParseError *parseError, UErrorCode &errorCode) {
if(U_FAILURE(errorCode)) {
return 0;
}
int32_t start=index;
UBool isEmpty=TRUE;
UBool hasOther=FALSE;
for(;;) {
// First, collect the selector looking for a small set of terminators.
// It would be a little faster to consider the syntax of each possible
// token right here, but that makes the code too complicated.
index=skipWhiteSpace(index);
UBool eos=index==msg.length();
if(eos || msg.charAt(index)==u_rightCurlyBrace) {
if(eos==inMessageFormatPattern(nestingLevel)) {
setParseError(parseError, start); // Bad plural/select pattern syntax.
errorCode=U_PATTERN_SYNTAX_ERROR;
return 0;
}
if(!hasOther) {
setParseError(parseError, 0); // Missing 'other' keyword in plural/select pattern.
errorCode=U_DEFAULT_KEYWORD_MISSING;
return 0;
}
return index;
}
int32_t selectorIndex=index;
if(UMSGPAT_ARG_TYPE_HAS_PLURAL_STYLE(argType) && msg.charAt(selectorIndex)==u_equal) {
// explicit-value plural selector: =double
index=skipDouble(index+1);
int32_t length=index-selectorIndex;
if(length==1) {
setParseError(parseError, start); // Bad plural/select pattern syntax.
errorCode=U_PATTERN_SYNTAX_ERROR;
return 0;
}
if(length>Part::MAX_LENGTH) {
setParseError(parseError, selectorIndex); // Argument selector too long.
errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
return 0;
}
addPart(UMSGPAT_PART_TYPE_ARG_SELECTOR, selectorIndex, length, 0, errorCode);
parseDouble(selectorIndex+1, index, FALSE,
parseError, errorCode); // adds ARG_INT or ARG_DOUBLE
} else {
index=skipIdentifier(index);
int32_t length=index-selectorIndex;
if(length==0) {
setParseError(parseError, start); // Bad plural/select pattern syntax.
errorCode=U_PATTERN_SYNTAX_ERROR;
return 0;
}
// Note: The ':' in "offset:" is just beyond the skipIdentifier() range.
if( UMSGPAT_ARG_TYPE_HAS_PLURAL_STYLE(argType) && length==6 && index<msg.length() &&
0==msg.compare(selectorIndex, 7, kOffsetColon, 0, 7)
) {
// plural offset, not a selector
if(!isEmpty) {
// Plural argument 'offset:' (if present) must precede key-message pairs.
setParseError(parseError, start);
errorCode=U_PATTERN_SYNTAX_ERROR;
return 0;
}
// allow whitespace between offset: and its value
int32_t valueIndex=skipWhiteSpace(index+1); // The ':' is at index.
index=skipDouble(valueIndex);
if(index==valueIndex) {
setParseError(parseError, start); // Missing value for plural 'offset:'.
errorCode=U_PATTERN_SYNTAX_ERROR;
return 0;
}
if((index-valueIndex)>Part::MAX_LENGTH) {
setParseError(parseError, valueIndex); // Plural offset value too long.
errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
return 0;
}
parseDouble(valueIndex, index, FALSE,
parseError, errorCode); // adds ARG_INT or ARG_DOUBLE
if(U_FAILURE(errorCode)) {
return 0;
}
isEmpty=FALSE;
continue; // no message fragment after the offset
} else {
// normal selector word
if(length>Part::MAX_LENGTH) {
setParseError(parseError, selectorIndex); // Argument selector too long.
errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
return 0;
}
addPart(UMSGPAT_PART_TYPE_ARG_SELECTOR, selectorIndex, length, 0, errorCode);
if(0==msg.compare(selectorIndex, length, kOther, 0, 5)) {
hasOther=TRUE;
}
}
}
if(U_FAILURE(errorCode)) {
return 0;
}
// parse the message fragment following the selector
index=skipWhiteSpace(index);
if(index==msg.length() || msg.charAt(index)!=u_leftCurlyBrace) {
setParseError(parseError, selectorIndex); // No message fragment after plural/select selector.
errorCode=U_PATTERN_SYNTAX_ERROR;
return 0;
}
index=parseMessage(index, 1, nestingLevel+1, argType, parseError, errorCode);
if(U_FAILURE(errorCode)) {
return 0;
}
isEmpty=FALSE;
}
}
int32_t
MessagePattern::parseArgNumber(const UnicodeString &s, int32_t start, int32_t limit) {
// If the identifier contains only ASCII digits, then it is an argument _number_
// and must not have leading zeros (except "0" itself).
// Otherwise it is an argument _name_.
if(start>=limit) {
return UMSGPAT_ARG_NAME_NOT_VALID;
}
int32_t number;
// Defer numeric errors until we know there are only digits.
UBool badNumber;
UChar c=s.charAt(start++);
if(c==0x30) {
if(start==limit) {
return 0;
} else {
number=0;
badNumber=TRUE; // leading zero
}
} else if(0x31<=c && c<=0x39) {
number=c-0x30;
badNumber=FALSE;
} else {
return UMSGPAT_ARG_NAME_NOT_NUMBER;
}
while(start<limit) {
c=s.charAt(start++);
if(0x30<=c && c<=0x39) {
if(number>=INT32_MAX/10) {
badNumber=TRUE; // overflow
}
number=number*10+(c-0x30);
} else {
return UMSGPAT_ARG_NAME_NOT_NUMBER;
}
}
// There are only ASCII digits.
if(badNumber) {
return UMSGPAT_ARG_NAME_NOT_VALID;
} else {
return number;
}
}
void
MessagePattern::parseDouble(int32_t start, int32_t limit, UBool allowInfinity,
UParseError *parseError, UErrorCode &errorCode) {
if(U_FAILURE(errorCode)) {
return;
}
U_ASSERT(start<limit);
// fake loop for easy exit and single throw statement
for(;;) { /*loop doesn't iterate*/
// fast path for small integers and infinity
int32_t value=0;
int32_t isNegative=0; // not boolean so that we can easily add it to value
int32_t index=start;
UChar c=msg.charAt(index++);
if(c==u_minus) {
isNegative=1;
if(index==limit) {
break; // no number
}
c=msg.charAt(index++);
} else if(c==u_plus) {
if(index==limit) {
break; // no number
}
c=msg.charAt(index++);
}
if(c==0x221e) { // infinity
if(allowInfinity && index==limit) {
double infinity=uprv_getInfinity();
addArgDoublePart(
isNegative!=0 ? -infinity : infinity,
start, limit-start, errorCode);
return;
} else {
break;
}
}
// try to parse the number as a small integer but fall back to a double
while('0'<=c && c<='9') {
value=value*10+(c-'0');
if(value>(Part::MAX_VALUE+isNegative)) {
break; // not a small-enough integer
}
if(index==limit) {
addPart(UMSGPAT_PART_TYPE_ARG_INT, start, limit-start,
isNegative!=0 ? -value : value, errorCode);
return;
}
c=msg.charAt(index++);
}
// Let Double.parseDouble() throw a NumberFormatException.
char numberChars[128];
int32_t capacity=(int32_t)sizeof(numberChars);
int32_t length=limit-start;
if(length>=capacity) {
break; // number too long
}
msg.extract(start, length, numberChars, capacity, US_INV);
if((int32_t)uprv_strlen(numberChars)<length) {
break; // contains non-invariant character that was turned into NUL
}
char *end;
double numericValue=uprv_strtod(numberChars, &end);
if(end!=(numberChars+length)) {
break; // parsing error
}
addArgDoublePart(numericValue, start, length, errorCode);
return;
}
setParseError(parseError, start /*, limit*/); // Bad syntax for numeric value.
errorCode=U_PATTERN_SYNTAX_ERROR;
return;
}
int32_t
MessagePattern::skipWhiteSpace(int32_t index) {
const UChar *s=msg.getBuffer();
int32_t msgLength=msg.length();
const UChar *t=PatternProps::skipWhiteSpace(s+index, msgLength-index);
return (int32_t)(t-s);
}
int32_t
MessagePattern::skipIdentifier(int32_t index) {
const UChar *s=msg.getBuffer();
int32_t msgLength=msg.length();
const UChar *t=PatternProps::skipIdentifier(s+index, msgLength-index);
return (int32_t)(t-s);
}
int32_t
MessagePattern::skipDouble(int32_t index) {
int32_t msgLength=msg.length();
while(index<msgLength) {
UChar c=msg.charAt(index);
// U+221E: Allow the infinity symbol, for ChoiceFormat patterns.
if((c<0x30 && c!=u_plus && c!=u_minus && c!=u_dot) || (c>0x39 && c!=u_e && c!=u_E && c!=0x221e)) {
break;
}
++index;
}
return index;
}
UBool
MessagePattern::isArgTypeChar(UChar32 c) {
return (u_a<=c && c<=u_z) || (u_A<=c && c<=u_Z);
}
UBool
MessagePattern::isChoice(int32_t index) {
UChar c;
return
((c=msg.charAt(index++))==u_c || c==u_C) &&
((c=msg.charAt(index++))==u_h || c==u_H) &&
((c=msg.charAt(index++))==u_o || c==u_O) &&
((c=msg.charAt(index++))==u_i || c==u_I) &&
((c=msg.charAt(index++))==u_c || c==u_C) &&
((c=msg.charAt(index))==u_e || c==u_E);
}
UBool
MessagePattern::isPlural(int32_t index) {
UChar c;
return
((c=msg.charAt(index++))==u_p || c==u_P) &&
((c=msg.charAt(index++))==u_l || c==u_L) &&
((c=msg.charAt(index++))==u_u || c==u_U) &&
((c=msg.charAt(index++))==u_r || c==u_R) &&
((c=msg.charAt(index++))==u_a || c==u_A) &&
((c=msg.charAt(index))==u_l || c==u_L);
}
UBool
MessagePattern::isSelect(int32_t index) {
UChar c;
return
((c=msg.charAt(index++))==u_s || c==u_S) &&
((c=msg.charAt(index++))==u_e || c==u_E) &&
((c=msg.charAt(index++))==u_l || c==u_L) &&
((c=msg.charAt(index++))==u_e || c==u_E) &&
((c=msg.charAt(index++))==u_c || c==u_C) &&
((c=msg.charAt(index))==u_t || c==u_T);
}
UBool
MessagePattern::isOrdinal(int32_t index) {
UChar c;
return
((c=msg.charAt(index++))==u_o || c==u_O) &&
((c=msg.charAt(index++))==u_r || c==u_R) &&
((c=msg.charAt(index++))==u_d || c==u_D) &&
((c=msg.charAt(index++))==u_i || c==u_I) &&
((c=msg.charAt(index++))==u_n || c==u_N) &&
((c=msg.charAt(index++))==u_a || c==u_A) &&
((c=msg.charAt(index))==u_l || c==u_L);
}
UBool
MessagePattern::inMessageFormatPattern(int32_t nestingLevel) {
return nestingLevel>0 || partsList->a[0].type==UMSGPAT_PART_TYPE_MSG_START;
}
UBool
MessagePattern::inTopLevelChoiceMessage(int32_t nestingLevel, UMessagePatternArgType parentType) {
return
nestingLevel==1 &&
parentType==UMSGPAT_ARG_TYPE_CHOICE &&
partsList->a[0].type!=UMSGPAT_PART_TYPE_MSG_START;
}
void
MessagePattern::addPart(UMessagePatternPartType type, int32_t index, int32_t length,
int32_t value, UErrorCode &errorCode) {
if(partsList->ensureCapacityForOneMore(partsLength, errorCode)) {
Part &part=partsList->a[partsLength++];
part.type=type;
part.index=index;
part.length=(uint16_t)length;
part.value=(int16_t)value;
part.limitPartIndex=0;
}
}
void
MessagePattern::addLimitPart(int32_t start,
UMessagePatternPartType type, int32_t index, int32_t length,
int32_t value, UErrorCode &errorCode) {
partsList->a[start].limitPartIndex=partsLength;
addPart(type, index, length, value, errorCode);
}
void
MessagePattern::addArgDoublePart(double numericValue, int32_t start, int32_t length,
UErrorCode &errorCode) {
if(U_FAILURE(errorCode)) {
return;
}
int32_t numericIndex=numericValuesLength;
if(numericValuesList==NULL) {
numericValuesList=new MessagePatternDoubleList();
if(numericValuesList==NULL) {
errorCode=U_MEMORY_ALLOCATION_ERROR;
return;
}
} else if(!numericValuesList->ensureCapacityForOneMore(numericValuesLength, errorCode)) {
return;
} else {
if(numericIndex>Part::MAX_VALUE) {
errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
return;
}
}
numericValuesList->a[numericValuesLength++]=numericValue;
addPart(UMSGPAT_PART_TYPE_ARG_DOUBLE, start, length, numericIndex, errorCode);
}
void
MessagePattern::setParseError(UParseError *parseError, int32_t index) {
if(parseError==NULL) {
return;
}
parseError->offset=index;
// Set preContext to some of msg before index.
// Avoid splitting a surrogate pair.
int32_t length=index;
if(length>=U_PARSE_CONTEXT_LEN) {
length=U_PARSE_CONTEXT_LEN-1;
if(length>0 && U16_IS_TRAIL(msg[index-length])) {
--length;
}
}
msg.extract(index-length, length, parseError->preContext);
parseError->preContext[length]=0;
// Set postContext to some of msg starting at index.
length=msg.length()-index;
if(length>=U_PARSE_CONTEXT_LEN) {
length=U_PARSE_CONTEXT_LEN-1;
if(length>0 && U16_IS_LEAD(msg[index+length-1])) {
--length;
}
}
msg.extract(index, length, parseError->postContext);
parseError->postContext[length]=0;
}
// MessageImpl ------------------------------------------------------------- ***
void
MessageImpl::appendReducedApostrophes(const UnicodeString &s, int32_t start, int32_t limit,
UnicodeString &sb) {
int32_t doubleApos=-1;
for(;;) {
int32_t i=s.indexOf(u_apos, start);
if(i<0 || i>=limit) {
sb.append(s, start, limit-start);
break;
}
if(i==doubleApos) {
// Double apostrophe at start-1 and start==i, append one.
sb.append(u_apos);
++start;
doubleApos=-1;
} else {
// Append text between apostrophes and skip this one.
sb.append(s, start, i-start);
doubleApos=start=i+1;
}
}
}
// Ported from second half of ICU4J SelectFormat.format(String).
UnicodeString &
MessageImpl::appendSubMessageWithoutSkipSyntax(const MessagePattern &msgPattern,
int32_t msgStart,
UnicodeString &result) {
const UnicodeString &msgString=msgPattern.getPatternString();
int32_t prevIndex=msgPattern.getPart(msgStart).getLimit();
for(int32_t i=msgStart;;) {
const MessagePattern::Part &part=msgPattern.getPart(++i);
UMessagePatternPartType type=part.getType();
int32_t index=part.getIndex();
if(type==UMSGPAT_PART_TYPE_MSG_LIMIT) {
return result.append(msgString, prevIndex, index-prevIndex);
} else if(type==UMSGPAT_PART_TYPE_SKIP_SYNTAX) {
result.append(msgString, prevIndex, index-prevIndex);
prevIndex=part.getLimit();
} else if(type==UMSGPAT_PART_TYPE_ARG_START) {
result.append(msgString, prevIndex, index-prevIndex);
prevIndex=index;
i=msgPattern.getLimitPartIndex(i);
index=msgPattern.getPart(i).getLimit();
appendReducedApostrophes(msgString, prevIndex, index, result);
prevIndex=index;
}
}
}
U_NAMESPACE_END
#endif // !UCONFIG_NO_FORMATTING
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