uniset_props.cpp | Explore in Territory

// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
*
*   Copyright (C) 1999-2014, International Business Machines
*   Corporation and others.  All Rights Reserved.
*
*******************************************************************************
*   file name:  uniset_props.cpp
*   encoding:   UTF-8
*   tab size:   8 (not used)
*   indentation:4
*
*   created on: 2004aug25
*   created by: Markus W. Scherer
*
*   Character property dependent functions moved here from uniset.cpp
*/

#include "unicode/utypes.h"
#include "unicode/uniset.h"
#include "unicode/parsepos.h"
#include "unicode/uchar.h"
#include "unicode/uscript.h"
#include "unicode/symtable.h"
#include "unicode/uset.h"
#include "unicode/locid.h"
#include "unicode/brkiter.h"
#include "uset_imp.h"
#include "ruleiter.h"
#include "cmemory.h"
#include "ucln_cmn.h"
#include "util.h"
#include "uvector.h"
#include "uprops.h"
#include "propname.h"
#include "normalizer2impl.h"
#include "uinvchar.h"
#include "uprops.h"
#include "charstr.h"
#include "cstring.h"
#include "mutex.h"
#include "umutex.h"
#include "uassert.h"
#include "hash.h"

U_NAMESPACE_USE

// Special property set IDs
static const char ANY[]   = …;   // [\u0000-\U0010FFFF]
static const char ASCII[] = …; // [\u0000-\u007F]
static const char ASSIGNED[] = …; // [:^Cn:]

// Unicode name property alias
#define NAME_PROP …
#define NAME_PROP_LENGTH …

// Cached sets ------------------------------------------------------------- ***

U_CDECL_BEGIN
static UBool U_CALLCONV uset_cleanup();

static UnicodeSet *uni32Singleton;
static icu::UInitOnce uni32InitOnce { … };

/**
 * Cleanup function for UnicodeSet
 */
static UBool U_CALLCONV uset_cleanup() { … }

U_CDECL_END

U_NAMESPACE_BEGIN

namespace {

// Cache some sets for other services -------------------------------------- ***
void U_CALLCONV createUni32Set(UErrorCode &errorCode) { … }


U_CFUNC UnicodeSet *
uniset_getUnicode32Instance(UErrorCode &errorCode) { … }

// helper functions for matching of pattern syntax pieces ------------------ ***
// these functions are parallel to the PERL_OPEN etc. strings above

// using these functions is not only faster than UnicodeString::compare() and
// caseCompare(), but they also make UnicodeSet work for simple patterns when
// no Unicode properties data is available - when caseCompare() fails

static inline UBool
isPerlOpen(const UnicodeString &pattern, int32_t pos) { … }

/*static inline UBool
isPerlClose(const UnicodeString &pattern, int32_t pos) {
    return pattern.charAt(pos)==u'}';
}*/

static inline UBool
isNameOpen(const UnicodeString &pattern, int32_t pos) { … }

static inline UBool
isPOSIXOpen(const UnicodeString &pattern, int32_t pos) { … }

/*static inline UBool
isPOSIXClose(const UnicodeString &pattern, int32_t pos) {
    return pattern.charAt(pos)==u':' && pattern.charAt(pos+1)==u']';
}*/

// TODO memory debugging provided inside uniset.cpp
// could be made available here but probably obsolete with use of modern
// memory leak checker tools
#define _dbgct(me) …

}  // namespace

//----------------------------------------------------------------
// Constructors &c
//----------------------------------------------------------------

/**
 * Constructs a set from the given pattern, optionally ignoring
 * white space.  See the class description for the syntax of the
 * pattern language.
 * @param pattern a string specifying what characters are in the set
 */
UnicodeSet::UnicodeSet(const UnicodeString& pattern,
                       UErrorCode& status) { … }

//----------------------------------------------------------------
// Public API
//----------------------------------------------------------------

UnicodeSet& UnicodeSet::applyPattern(const UnicodeString& pattern,
                                     UErrorCode& status) { … }

void
UnicodeSet::applyPatternIgnoreSpace(const UnicodeString& pattern,
                                    ParsePosition& pos,
                                    const SymbolTable* symbols,
                                    UErrorCode& status) { … }

/**
 * Return true if the given position, in the given pattern, appears
 * to be the start of a UnicodeSet pattern.
 */
UBool UnicodeSet::resemblesPattern(const UnicodeString& pattern, int32_t pos) { … }

//----------------------------------------------------------------
// Implementation: Pattern parsing
//----------------------------------------------------------------

namespace {

/**
 * A small all-inline class to manage a UnicodeSet pointer.  Add
 * operator->() etc. as needed.
 */
class UnicodeSetPointer { … };

constexpr int32_t MAX_DEPTH = …;

}  // namespace

/**
 * Parse the pattern from the given RuleCharacterIterator.  The
 * iterator is advanced over the parsed pattern.
 * @param chars iterator over the pattern characters.  Upon return
 * it will be advanced to the first character after the parsed
 * pattern, or the end of the iteration if all characters are
 * parsed.
 * @param symbols symbol table to use to parse and dereference
 * variables, or null if none.
 * @param rebuiltPat the pattern that was parsed, rebuilt or
 * copied from the input pattern, as appropriate.
 * @param options a bit mask of zero or more of the following:
 * IGNORE_SPACE, CASE.
 */
void UnicodeSet::applyPattern(RuleCharacterIterator& chars,
                              const SymbolTable* symbols,
                              UnicodeString& rebuiltPat,
                              uint32_t options,
                              UnicodeSet& (UnicodeSet::*caseClosure)(int32_t attribute),
                              int32_t depth,
                              UErrorCode& ec) { … }

//----------------------------------------------------------------
// Property set implementation
//----------------------------------------------------------------

namespace {

static UBool numericValueFilter(UChar32 ch, void* context) { … }

static UBool generalCategoryMaskFilter(UChar32 ch, void* context) { … }

static UBool versionFilter(UChar32 ch, void* context) { … }

IntPropertyContext;

static UBool intPropertyFilter(UChar32 ch, void* context) { … }

static UBool scriptExtensionsFilter(UChar32 ch, void* context) { … }

}  // namespace

/**
 * Generic filter-based scanning code for UCD property UnicodeSets.
 */
void UnicodeSet::applyFilter(UnicodeSet::Filter filter,
                             void* context,
                             const UnicodeSet* inclusions,
                             UErrorCode &status) { … }

namespace {

static UBool mungeCharName(char* dst, const char* src, int32_t dstCapacity) { … }

}  // namespace

//----------------------------------------------------------------
// Property set API
//----------------------------------------------------------------

#define FAIL(ec) …

UnicodeSet&
UnicodeSet::applyIntPropertyValue(UProperty prop, int32_t value, UErrorCode& ec) { … }

UnicodeSet&
UnicodeSet::applyPropertyAlias(const UnicodeString& prop,
                               const UnicodeString& value,
                               UErrorCode& ec) { … }

//----------------------------------------------------------------
// Property set patterns
//----------------------------------------------------------------

/**
 * Return true if the given position, in the given pattern, appears
 * to be the start of a property set pattern.
 */
UBool UnicodeSet::resemblesPropertyPattern(const UnicodeString& pattern,
                                           int32_t pos) { … }

/**
 * Return true if the given iterator appears to point at a
 * property pattern.  Regardless of the result, return with the
 * iterator unchanged.
 * @param chars iterator over the pattern characters.  Upon return
 * it will be unchanged.
 * @param iterOpts RuleCharacterIterator options
 */
UBool UnicodeSet::resemblesPropertyPattern(RuleCharacterIterator& chars,
                                           int32_t iterOpts) { … }

/**
 * Parse the given property pattern at the given parse position.
 */
UnicodeSet& UnicodeSet::applyPropertyPattern(const UnicodeString& pattern,
                                             ParsePosition& ppos,
                                             UErrorCode &ec) { … }

/**
 * Parse a property pattern.
 * @param chars iterator over the pattern characters.  Upon return
 * it will be advanced to the first character after the parsed
 * pattern, or the end of the iteration if all characters are
 * parsed.
 * @param rebuiltPat the pattern that was parsed, rebuilt or
 * copied from the input pattern, as appropriate.
 */
void UnicodeSet::applyPropertyPattern(RuleCharacterIterator& chars,
                                      UnicodeString& rebuiltPat,
                                      UErrorCode& ec) { … }

U_NAMESPACE_END
chromium/third_party/icu/source/common/uniset_props.cpp
