зеркало из https://github.com/mozilla/pjs.git
Added string, character, and exception utilities
This commit is contained in:
waldemar%netscape.com
Родитель
88225dd675
Коммит
cf7f6d77da
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@ -17,8 +17,10 @@
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// Copyright (C) 1998 Netscape Communications Corporation. All
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// Rights Reserved.
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#include <cstring>
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#include <new>
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#include <iomanip>
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#include <algorithm>
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#include "utilities.h"
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#ifdef WIN32
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@ -159,7 +161,52 @@ uint JS::floorLog2(uint32 n)
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//
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// From java.lang.Character.java:
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// Return a String containing the characters of the null-terminated C string cstr
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// (without the trailing null).
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JS::String JS::widenCString(const char *cstr)
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{
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size_t len = std::strlen(cstr);
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String s(len, uni::null);
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std::transform(cstr, cstr+len, s.begin(), widen);
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return s;
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}
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// Widen and append length characters starting at chars to the end of str.
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void JS::appendChars(String &str, const char *chars, size_t length)
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{
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String::size_type strLen = str.size();
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str.append(length, uni::null);
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std::transform(chars, chars+length, str.begin()+strLen, widen);
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}
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// Widen and append the null-terminated string cstr to the end of str.
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// Return str.
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JS::String &JS::operator+=(String &str, const char *cstr)
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{
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appendChars(str, cstr, std::strlen(cstr));
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return str;
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}
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// Return the concatenation of str and the null-terminated string cstr.
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JS::String JS::operator+(const String &str, const char *cstr)
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{
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String s = widenCString(cstr);
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return str + s;
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}
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// Return the concatenation of the null-terminated string cstr and str.
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JS::String JS::operator+(const char *cstr, const String &str)
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{
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String s = widenCString(cstr);
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return s += str;
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}
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// From java.lang.Character:
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//
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// The character properties are currently encoded into 32 bits in the
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// following manner:
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@ -1433,26 +1480,47 @@ const uint32 JS::CharInfo::a[] = {
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// Return c converted to upper case. If c cannot be converted to upper case,
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// return c unchanged.
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JS::char16 JS::toUpper(char16 c)
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char16 JS::toUpper(char16 c)
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{
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uint32 code = CharInfo::cCode(c);
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if (code & 0x00100000)
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c = static_cast<char16>(static_cast<int32>(c) - (static_cast<int32>(code) >> 22));
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CharInfo ci(c);
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if (ci.info & 0x00100000)
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c = static_cast<char16>(static_cast<int32>(c) - (static_cast<int32>(ci.info) >> 22));
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return c;
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}
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// Return c converted to lower case. If c cannot be converted to lower case,
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// return c unchanged.
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JS::char16 JS::toLower(char16 c)
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char16 JS::toLower(char16 c)
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{
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uint32 code = CharInfo::cCode(c);
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if (code & 0x00200000)
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c = static_cast<char16>(static_cast<int32>(c) + (static_cast<int32>(code) >> 22));
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CharInfo ci(c);
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if (ci.info & 0x00200000)
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c = static_cast<char16>(static_cast<int32>(c) + (static_cast<int32>(ci.info) >> 22));
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return c;
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}
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// Return true if c is an ASCII hexadecimal digit, in which case store the digit's numeric value in d.
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bool JS::isASCIIHexDigit(char16 c, uint &digit)
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{
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uint cv = c;
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if (cv < '0')
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return false;
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if (cv <= '9') {
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digit = cv - '0';
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return true;
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}
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cv |= 0x20;
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if (cv >= 'a' && cv <= 'f') {
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digit = cv - 'a' + 10;
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return true;
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}
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return false;
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}
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//
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// C++ I/O
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//
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@ -1479,6 +1547,29 @@ void JS::showString(ostream &out, const String &str)
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}
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//
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// Exceptions
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//
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static const char *const kindStrings[] = {
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"Syntax error" // SyntaxError
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};
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// Return a null-terminated string describing the exception's kind.
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const char *JS::Exception::kindString() const
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{
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return kindStrings[kind];
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}
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// Return the full error message.
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JS::String JS::Exception::fullMessage() const
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{
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return kindString() + (": " + message);
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}
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//
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// Static Initializers
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//
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@ -25,6 +25,7 @@
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#include <iostream>
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#include "systemtypes.h"
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using std::size_t;
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using std::string;
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using std::istream;
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using std::ostream;
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@ -72,25 +73,16 @@ namespace JavaScript {
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// Unicode UTF-16 characters and strings
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//
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// A UTF-16 character
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// Use wchar_t on platforms on which wchar_t has 16 bits; otherwise use uint16.
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// Note that in C++ wchar_t is a distinct type rather than a typedef for some integral type.
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// Like char, a char16 can be either signed or unsigned at the implementation's discretion.
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typedef wchar_t char16;
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typedef unsigned wchar_t uchar16;
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// A string of UTF-16 characters. Nulls are allowed just like any other character.
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// The string is not null-terminated.
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// Use wstring if char16 is wchar_t. Otherwise use basic_string<uint16>.
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typedef std::basic_string<char16> String;
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#if 0
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using std::wint_t;
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const wint_t ueof = WEOF;
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#else
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typedef int32 wint_t; // A type that can hold any char16 plus one special value: ueof.
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const wint_t ueof = -1;
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#endif
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typedef uint32 char16orEOF; // A type that can hold any char16 plus one special value: ueof.
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const char16orEOF char16eof = static_cast<char16orEOF>(-1);
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// If c is a char16, return it; if c is char16eof, return the character \uFFFF.
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inline char16 char16orEOFToChar16(char16orEOF c) {return static_cast<char16>(c);}
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// Special char16s
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namespace uni {
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@ -100,11 +92,20 @@ namespace JavaScript {
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const char16 ls = 0x2028;
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const char16 ps = 0x2029;
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}
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const uint16 firstFormatChar = 0x200C; // Lowest Unicode Cf character
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inline char16 widen(char ch) {return static_cast<char16>(static_cast<uchar>(ch));}
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String widenCString(const char *cstr);
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void appendChars(String &str, const char *chars, size_t length);
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String &operator+=(String &str, const char *cstr);
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String operator+(const String &str, const char *cstr);
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String operator+(const char *cstr, const String &str);
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class CharInfo {
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uint32 info; // Word from table a.
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// Unicode character attribute lookup tables
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static const uint8 x[];
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static const uint8 y[];
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@ -152,43 +153,49 @@ namespace JavaScript {
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LineBreakGroup // 5 Line break character [LineBreakGroup & -2 == WhiteGroup]
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};
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// Character classifying and mapping macros, based on java.lang.Character
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static uint32 cCode(char16 c) {return a[y[x[static_cast<uint16>(c)>>6]<<6 | c&0x3F]];}
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static Type cType(char16 c) {return static_cast<Type>(cCode(c) & 0x1F);}
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static Group cGroup(char16 c) {return static_cast<Group>(cCode(c) >> 16 & 7);}
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CharInfo() {}
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CharInfo(char16 c): info(a[y[x[static_cast<uint16>(c)>>6]<<6 | c&0x3F]]) {}
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CharInfo(const CharInfo &ci): info(ci.info) {}
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friend Type cType(const CharInfo &ci) {return static_cast<Type>(ci.info & 0x1F);}
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friend Group cGroup(const CharInfo &ci) {return static_cast<Group>(ci.info >> 16 & 7);}
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friend bool isAlpha(const CharInfo &ci)
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{
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return ((((1 << UppercaseLetter) | (1 << LowercaseLetter) | (1 << TitlecaseLetter) | (1 << ModifierLetter) | (1 << OtherLetter))
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>> cType(ci)) & 1) != 0;
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}
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friend bool isAlphanumeric(const CharInfo &ci)
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{
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return ((((1 << UppercaseLetter) | (1 << LowercaseLetter) | (1 << TitlecaseLetter) | (1 << ModifierLetter) | (1 << OtherLetter) |
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(1 << DecimalDigitNumber) | (1 << LetterNumber))
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>> cType(ci)) & 1) != 0;
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}
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// Return true if this character can start a JavaScript identifier
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friend bool isIdLeading(const CharInfo &ci) {return cGroup(ci) == IdGroup;}
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// Return true if this character can continue a JavaScript identifier
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friend bool isIdContinuing(const CharInfo &ci) {return cGroup(ci) & -2 == IdGroup;}
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// Return true if this character is a Unicode decimal digit (Nd) character
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friend bool isDecimalDigit(const CharInfo &ci) {return cType(ci) == DecimalDigitNumber;}
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// Return true if this character is a Unicode white space or line break character
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friend bool isSpace(const CharInfo &ci) {return cGroup(ci) & -2 == WhiteGroup;}
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// Return true if this character is a Unicode line break character (LF, CR, LS, or PS)
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friend bool isLineBreak(const CharInfo &ci) {return cGroup(ci) == LineBreakGroup;}
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// Return true if this character is a Unicode format control character (Cf)
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friend bool isFormat(const CharInfo &ci) {return cGroup(ci) == FormatGroup;}
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friend bool isUpper(const CharInfo &ci) {return cType(ci) == UppercaseLetter;}
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friend bool isLower(const CharInfo &ci) {return cType(ci) == LowercaseLetter;}
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friend char16 toUpper(char16 c);
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friend char16 toLower(char16 c);
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};
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inline bool isAlpha(char16 c)
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{
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return ((((1 << CharInfo::UppercaseLetter) | (1 << CharInfo::LowercaseLetter) | (1 << CharInfo::TitlecaseLetter) |
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(1 << CharInfo::ModifierLetter) | (1 << CharInfo::OtherLetter))
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>> CharInfo::cType(c)) & 1) != 0;
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}
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inline bool isAlphanumeric(char16 c)
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{
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return ((((1 << CharInfo::UppercaseLetter) | (1 << CharInfo::LowercaseLetter) | (1 << CharInfo::TitlecaseLetter) |
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(1 << CharInfo::ModifierLetter) | (1 << CharInfo::OtherLetter) | (1 << CharInfo::DecimalDigitNumber))
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>> CharInfo::cType(c)) & 1) != 0;
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}
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// Return true if c can start a JavaScript identifier
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inline bool isIdLeading(char16 c) {return CharInfo::cGroup(c) == CharInfo::IdGroup;}
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// Return true if c can continue a JavaScript identifier
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inline bool isIdContinuing(char16 c) {return CharInfo::cGroup(c) & -2 == CharInfo::IdGroup;}
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// Return true if c is a Unicode decimal digit (Nd) character
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inline bool isDecimalDigit(char16 c) {return CharInfo::cType(c) == CharInfo::DecimalDigitNumber;}
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// Return true if c is a Unicode white space or line break character
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inline bool isSpace(char16 c) {return CharInfo::cGroup(c) & -2 == CharInfo::WhiteGroup;}
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// Return true if c is a Unicode line break character (LF, CR, LS, or PS)
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inline bool isLineBreak(char16 c) {return CharInfo::cGroup(c) == CharInfo::LineBreakGroup;}
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inline bool isUpper(char16 c) {return CharInfo::cType(c) == CharInfo::UppercaseLetter;}
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inline bool isLower(char16 c) {return CharInfo::cType(c) == CharInfo::LowercaseLetter;}
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char16 toUpper(char16 c);
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char16 toLower(char16 c);
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inline bool isASCIIDecimalDigit(char16 c) {return c >= '0' && c <= '9';}
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bool isASCIIHexDigit(char16 c, uint &digit);
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//
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@ -197,8 +204,7 @@ namespace JavaScript {
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// private
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template <typename T>
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class ProtoArrayBuffer
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{
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class ProtoArrayBuffer {
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protected:
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T *buffer;
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int32 length;
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@ -237,8 +243,7 @@ namespace JavaScript {
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// ArrayBuffer allocates the array from the heap.
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// Use append to append nElts elements to the end of the ArrayBuffer.
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template <typename T, int32 cacheSize>
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class ArrayBuffer: public ProtoArrayBuffer<T>
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{
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class ArrayBuffer: public ProtoArrayBuffer<T> {
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T cache[cacheSize];
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public:
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@ -283,8 +288,7 @@ namespace JavaScript {
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// A class to remember the format of an ostream so that a function may modify it internally
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// without changing it for the caller.
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class SaveFormat
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{
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class SaveFormat {
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ostream &o;
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std::ios_base::fmtflags flags;
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char fill;
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@ -304,5 +308,31 @@ namespace JavaScript {
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}
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void showString(ostream &out, const String &str);
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//
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// Exceptions
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//
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// A JavaScript exception (other than out-of-memory, for which we use the standard C++
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// exception bad_alloc).
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struct Exception {
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enum Kind {
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SyntaxError
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};
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Kind kind; // The exception's kind
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String message; // The detailed message
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String sourceFile; // A description of the source code that caused the error
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uint32 lineNum; // One-based source line number; 0 if unknown
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uint32 charPos; // Zero-based character offset within the line
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String sourceLine; // The text of the source line
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Exception(Kind kind, const String &message): kind(kind), message(message), lineNum(0) {}
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Exception(Kind kind, const String &message, const String &sourceFile, uint32 lineNum, uint32 charPos, const String sourceLine):
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kind(kind), message(message), sourceFile(sourceFile), lineNum(lineNum), charPos(charPos), sourceLine(sourceLine) {}
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const char *kindString() const;
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String fullMessage() const;
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};
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}
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#endif
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|
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|
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@ -17,8 +17,10 @@
|
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// Copyright (C) 1998 Netscape Communications Corporation. All
|
||||
// Rights Reserved.
|
||||
|
||||
#include <cstring>
|
||||
#include <new>
|
||||
#include <iomanip>
|
||||
#include <algorithm>
|
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#include "utilities.h"
|
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|
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#ifdef WIN32
|
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|
|
@ -159,7 +161,52 @@ uint JS::floorLog2(uint32 n)
|
|||
//
|
||||
|
||||
|
||||
// From java.lang.Character.java:
|
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// Return a String containing the characters of the null-terminated C string cstr
|
||||
// (without the trailing null).
|
||||
JS::String JS::widenCString(const char *cstr)
|
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{
|
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size_t len = std::strlen(cstr);
|
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String s(len, uni::null);
|
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std::transform(cstr, cstr+len, s.begin(), widen);
|
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return s;
|
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}
|
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|
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|
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// Widen and append length characters starting at chars to the end of str.
|
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void JS::appendChars(String &str, const char *chars, size_t length)
|
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{
|
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String::size_type strLen = str.size();
|
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str.append(length, uni::null);
|
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std::transform(chars, chars+length, str.begin()+strLen, widen);
|
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}
|
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|
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|
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// Widen and append the null-terminated string cstr to the end of str.
|
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// Return str.
|
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JS::String &JS::operator+=(String &str, const char *cstr)
|
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{
|
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appendChars(str, cstr, std::strlen(cstr));
|
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return str;
|
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}
|
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|
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|
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// Return the concatenation of str and the null-terminated string cstr.
|
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JS::String JS::operator+(const String &str, const char *cstr)
|
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{
|
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String s = widenCString(cstr);
|
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return str + s;
|
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}
|
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|
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|
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// Return the concatenation of the null-terminated string cstr and str.
|
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JS::String JS::operator+(const char *cstr, const String &str)
|
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{
|
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String s = widenCString(cstr);
|
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return s += str;
|
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}
|
||||
|
||||
|
||||
// From java.lang.Character:
|
||||
//
|
||||
// The character properties are currently encoded into 32 bits in the
|
||||
// following manner:
|
||||
|
|
@ -1433,26 +1480,47 @@ const uint32 JS::CharInfo::a[] = {
|
|||
|
||||
// Return c converted to upper case. If c cannot be converted to upper case,
|
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// return c unchanged.
|
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JS::char16 JS::toUpper(char16 c)
|
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char16 JS::toUpper(char16 c)
|
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{
|
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uint32 code = CharInfo::cCode(c);
|
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if (code & 0x00100000)
|
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c = static_cast<char16>(static_cast<int32>(c) - (static_cast<int32>(code) >> 22));
|
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CharInfo ci(c);
|
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if (ci.info & 0x00100000)
|
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c = static_cast<char16>(static_cast<int32>(c) - (static_cast<int32>(ci.info) >> 22));
|
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return c;
|
||||
}
|
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|
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|
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// Return c converted to lower case. If c cannot be converted to lower case,
|
||||
// return c unchanged.
|
||||
JS::char16 JS::toLower(char16 c)
|
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char16 JS::toLower(char16 c)
|
||||
{
|
||||
uint32 code = CharInfo::cCode(c);
|
||||
if (code & 0x00200000)
|
||||
c = static_cast<char16>(static_cast<int32>(c) + (static_cast<int32>(code) >> 22));
|
||||
CharInfo ci(c);
|
||||
if (ci.info & 0x00200000)
|
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c = static_cast<char16>(static_cast<int32>(c) + (static_cast<int32>(ci.info) >> 22));
|
||||
return c;
|
||||
}
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||||
|
||||
|
||||
// Return true if c is an ASCII hexadecimal digit, in which case store the digit's numeric value in d.
|
||||
bool JS::isASCIIHexDigit(char16 c, uint &digit)
|
||||
{
|
||||
uint cv = c;
|
||||
|
||||
if (cv < '0')
|
||||
return false;
|
||||
if (cv <= '9') {
|
||||
digit = cv - '0';
|
||||
return true;
|
||||
}
|
||||
cv |= 0x20;
|
||||
if (cv >= 'a' && cv <= 'f') {
|
||||
digit = cv - 'a' + 10;
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
|
||||
|
||||
//
|
||||
// C++ I/O
|
||||
//
|
||||
|
|
@ -1479,6 +1547,29 @@ void JS::showString(ostream &out, const String &str)
|
|||
}
|
||||
|
||||
|
||||
//
|
||||
// Exceptions
|
||||
//
|
||||
|
||||
|
||||
static const char *const kindStrings[] = {
|
||||
"Syntax error" // SyntaxError
|
||||
};
|
||||
|
||||
// Return a null-terminated string describing the exception's kind.
|
||||
const char *JS::Exception::kindString() const
|
||||
{
|
||||
return kindStrings[kind];
|
||||
}
|
||||
|
||||
|
||||
// Return the full error message.
|
||||
JS::String JS::Exception::fullMessage() const
|
||||
{
|
||||
return kindString() + (": " + message);
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// Static Initializers
|
||||
//
|
||||
|
|
|
|||
|
|
@ -25,6 +25,7 @@
|
|||
#include <iostream>
|
||||
#include "systemtypes.h"
|
||||
|
||||
using std::size_t;
|
||||
using std::string;
|
||||
using std::istream;
|
||||
using std::ostream;
|
||||
|
|
@ -72,25 +73,16 @@ namespace JavaScript {
|
|||
// Unicode UTF-16 characters and strings
|
||||
//
|
||||
|
||||
// A UTF-16 character
|
||||
// Use wchar_t on platforms on which wchar_t has 16 bits; otherwise use uint16.
|
||||
// Note that in C++ wchar_t is a distinct type rather than a typedef for some integral type.
|
||||
// Like char, a char16 can be either signed or unsigned at the implementation's discretion.
|
||||
typedef wchar_t char16;
|
||||
typedef unsigned wchar_t uchar16;
|
||||
|
||||
// A string of UTF-16 characters. Nulls are allowed just like any other character.
|
||||
// The string is not null-terminated.
|
||||
// Use wstring if char16 is wchar_t. Otherwise use basic_string<uint16>.
|
||||
typedef std::basic_string<char16> String;
|
||||
|
||||
#if 0
|
||||
using std::wint_t;
|
||||
const wint_t ueof = WEOF;
|
||||
#else
|
||||
typedef int32 wint_t; // A type that can hold any char16 plus one special value: ueof.
|
||||
const wint_t ueof = -1;
|
||||
#endif
|
||||
typedef uint32 char16orEOF; // A type that can hold any char16 plus one special value: ueof.
|
||||
const char16orEOF char16eof = static_cast<char16orEOF>(-1);
|
||||
|
||||
// If c is a char16, return it; if c is char16eof, return the character \uFFFF.
|
||||
inline char16 char16orEOFToChar16(char16orEOF c) {return static_cast<char16>(c);}
|
||||
|
||||
// Special char16s
|
||||
namespace uni {
|
||||
|
|
@ -100,11 +92,20 @@ namespace JavaScript {
|
|||
const char16 ls = 0x2028;
|
||||
const char16 ps = 0x2029;
|
||||
}
|
||||
const uint16 firstFormatChar = 0x200C; // Lowest Unicode Cf character
|
||||
|
||||
inline char16 widen(char ch) {return static_cast<char16>(static_cast<uchar>(ch));}
|
||||
|
||||
String widenCString(const char *cstr);
|
||||
void appendChars(String &str, const char *chars, size_t length);
|
||||
String &operator+=(String &str, const char *cstr);
|
||||
String operator+(const String &str, const char *cstr);
|
||||
String operator+(const char *cstr, const String &str);
|
||||
|
||||
|
||||
class CharInfo {
|
||||
uint32 info; // Word from table a.
|
||||
|
||||
// Unicode character attribute lookup tables
|
||||
static const uint8 x[];
|
||||
static const uint8 y[];
|
||||
|
|
@ -152,43 +153,49 @@ namespace JavaScript {
|
|||
LineBreakGroup // 5 Line break character [LineBreakGroup & -2 == WhiteGroup]
|
||||
};
|
||||
|
||||
// Character classifying and mapping macros, based on java.lang.Character
|
||||
static uint32 cCode(char16 c) {return a[y[x[static_cast<uint16>(c)>>6]<<6 | c&0x3F]];}
|
||||
static Type cType(char16 c) {return static_cast<Type>(cCode(c) & 0x1F);}
|
||||
static Group cGroup(char16 c) {return static_cast<Group>(cCode(c) >> 16 & 7);}
|
||||
CharInfo() {}
|
||||
CharInfo(char16 c): info(a[y[x[static_cast<uint16>(c)>>6]<<6 | c&0x3F]]) {}
|
||||
CharInfo(const CharInfo &ci): info(ci.info) {}
|
||||
|
||||
friend Type cType(const CharInfo &ci) {return static_cast<Type>(ci.info & 0x1F);}
|
||||
friend Group cGroup(const CharInfo &ci) {return static_cast<Group>(ci.info >> 16 & 7);}
|
||||
|
||||
friend bool isAlpha(const CharInfo &ci)
|
||||
{
|
||||
return ((((1 << UppercaseLetter) | (1 << LowercaseLetter) | (1 << TitlecaseLetter) | (1 << ModifierLetter) | (1 << OtherLetter))
|
||||
>> cType(ci)) & 1) != 0;
|
||||
}
|
||||
|
||||
friend bool isAlphanumeric(const CharInfo &ci)
|
||||
{
|
||||
return ((((1 << UppercaseLetter) | (1 << LowercaseLetter) | (1 << TitlecaseLetter) | (1 << ModifierLetter) | (1 << OtherLetter) |
|
||||
(1 << DecimalDigitNumber) | (1 << LetterNumber))
|
||||
>> cType(ci)) & 1) != 0;
|
||||
}
|
||||
|
||||
// Return true if this character can start a JavaScript identifier
|
||||
friend bool isIdLeading(const CharInfo &ci) {return cGroup(ci) == IdGroup;}
|
||||
// Return true if this character can continue a JavaScript identifier
|
||||
friend bool isIdContinuing(const CharInfo &ci) {return cGroup(ci) & -2 == IdGroup;}
|
||||
|
||||
// Return true if this character is a Unicode decimal digit (Nd) character
|
||||
friend bool isDecimalDigit(const CharInfo &ci) {return cType(ci) == DecimalDigitNumber;}
|
||||
// Return true if this character is a Unicode white space or line break character
|
||||
friend bool isSpace(const CharInfo &ci) {return cGroup(ci) & -2 == WhiteGroup;}
|
||||
// Return true if this character is a Unicode line break character (LF, CR, LS, or PS)
|
||||
friend bool isLineBreak(const CharInfo &ci) {return cGroup(ci) == LineBreakGroup;}
|
||||
// Return true if this character is a Unicode format control character (Cf)
|
||||
friend bool isFormat(const CharInfo &ci) {return cGroup(ci) == FormatGroup;}
|
||||
|
||||
friend bool isUpper(const CharInfo &ci) {return cType(ci) == UppercaseLetter;}
|
||||
friend bool isLower(const CharInfo &ci) {return cType(ci) == LowercaseLetter;}
|
||||
|
||||
friend char16 toUpper(char16 c);
|
||||
friend char16 toLower(char16 c);
|
||||
};
|
||||
|
||||
inline bool isAlpha(char16 c)
|
||||
{
|
||||
return ((((1 << CharInfo::UppercaseLetter) | (1 << CharInfo::LowercaseLetter) | (1 << CharInfo::TitlecaseLetter) |
|
||||
(1 << CharInfo::ModifierLetter) | (1 << CharInfo::OtherLetter))
|
||||
>> CharInfo::cType(c)) & 1) != 0;
|
||||
}
|
||||
|
||||
inline bool isAlphanumeric(char16 c)
|
||||
{
|
||||
return ((((1 << CharInfo::UppercaseLetter) | (1 << CharInfo::LowercaseLetter) | (1 << CharInfo::TitlecaseLetter) |
|
||||
(1 << CharInfo::ModifierLetter) | (1 << CharInfo::OtherLetter) | (1 << CharInfo::DecimalDigitNumber))
|
||||
>> CharInfo::cType(c)) & 1) != 0;
|
||||
}
|
||||
|
||||
// Return true if c can start a JavaScript identifier
|
||||
inline bool isIdLeading(char16 c) {return CharInfo::cGroup(c) == CharInfo::IdGroup;}
|
||||
// Return true if c can continue a JavaScript identifier
|
||||
inline bool isIdContinuing(char16 c) {return CharInfo::cGroup(c) & -2 == CharInfo::IdGroup;}
|
||||
|
||||
// Return true if c is a Unicode decimal digit (Nd) character
|
||||
inline bool isDecimalDigit(char16 c) {return CharInfo::cType(c) == CharInfo::DecimalDigitNumber;}
|
||||
// Return true if c is a Unicode white space or line break character
|
||||
inline bool isSpace(char16 c) {return CharInfo::cGroup(c) & -2 == CharInfo::WhiteGroup;}
|
||||
// Return true if c is a Unicode line break character (LF, CR, LS, or PS)
|
||||
inline bool isLineBreak(char16 c) {return CharInfo::cGroup(c) == CharInfo::LineBreakGroup;}
|
||||
|
||||
inline bool isUpper(char16 c) {return CharInfo::cType(c) == CharInfo::UppercaseLetter;}
|
||||
inline bool isLower(char16 c) {return CharInfo::cType(c) == CharInfo::LowercaseLetter;}
|
||||
|
||||
char16 toUpper(char16 c);
|
||||
char16 toLower(char16 c);
|
||||
|
||||
inline bool isASCIIDecimalDigit(char16 c) {return c >= '0' && c <= '9';}
|
||||
bool isASCIIHexDigit(char16 c, uint &digit);
|
||||
|
||||
|
||||
//
|
||||
|
|
@ -197,8 +204,7 @@ namespace JavaScript {
|
|||
|
||||
// private
|
||||
template <typename T>
|
||||
class ProtoArrayBuffer
|
||||
{
|
||||
class ProtoArrayBuffer {
|
||||
protected:
|
||||
T *buffer;
|
||||
int32 length;
|
||||
|
|
@ -237,8 +243,7 @@ namespace JavaScript {
|
|||
// ArrayBuffer allocates the array from the heap.
|
||||
// Use append to append nElts elements to the end of the ArrayBuffer.
|
||||
template <typename T, int32 cacheSize>
|
||||
class ArrayBuffer: public ProtoArrayBuffer<T>
|
||||
{
|
||||
class ArrayBuffer: public ProtoArrayBuffer<T> {
|
||||
T cache[cacheSize];
|
||||
|
||||
public:
|
||||
|
|
@ -283,8 +288,7 @@ namespace JavaScript {
|
|||
|
||||
// A class to remember the format of an ostream so that a function may modify it internally
|
||||
// without changing it for the caller.
|
||||
class SaveFormat
|
||||
{
|
||||
class SaveFormat {
|
||||
ostream &o;
|
||||
std::ios_base::fmtflags flags;
|
||||
char fill;
|
||||
|
|
@ -304,5 +308,31 @@ namespace JavaScript {
|
|||
}
|
||||
void showString(ostream &out, const String &str);
|
||||
|
||||
|
||||
//
|
||||
// Exceptions
|
||||
//
|
||||
|
||||
// A JavaScript exception (other than out-of-memory, for which we use the standard C++
|
||||
// exception bad_alloc).
|
||||
struct Exception {
|
||||
enum Kind {
|
||||
SyntaxError
|
||||
};
|
||||
|
||||
Kind kind; // The exception's kind
|
||||
String message; // The detailed message
|
||||
String sourceFile; // A description of the source code that caused the error
|
||||
uint32 lineNum; // One-based source line number; 0 if unknown
|
||||
uint32 charPos; // Zero-based character offset within the line
|
||||
String sourceLine; // The text of the source line
|
||||
|
||||
Exception(Kind kind, const String &message): kind(kind), message(message), lineNum(0) {}
|
||||
Exception(Kind kind, const String &message, const String &sourceFile, uint32 lineNum, uint32 charPos, const String sourceLine):
|
||||
kind(kind), message(message), sourceFile(sourceFile), lineNum(lineNum), charPos(charPos), sourceLine(sourceLine) {}
|
||||
|
||||
const char *kindString() const;
|
||||
String fullMessage() const;
|
||||
};
|
||||
}
|
||||
#endif
|
||||
|
|
|
|||
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