/* -*- tab-width: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is [Open Source Virtual Machine.].
*
* The Initial Developer of the Original Code is
* Adobe System Incorporated.
* Portions created by the Initial Developer are Copyright (C) 2008
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Adobe AS3 Team
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "avmplus.h"
#ifdef VMCFG_EVAL
#include "eval.h"
namespace avmplus
{
namespace RTC
{
Token Lexer::xmlAtomImpl()
{
mark=idx;
switch (idx[0]) {
case '<':
switch (idx[1]) {
case '!':
if (idx[2] == '[' &&
idx[3] == 'C' &&
idx[4] == 'D' &&
idx[5] == 'A' &&
idx[6] == 'T' &&
idx[7] == 'A' &&
idx[8] == '[') {
idx += 9;
return xmlMarkup(T_XmlCDATA, "]]>");
}
if (idx[2] == '-' && idx[3] == '-') {
idx += 4;
return xmlMarkup(T_XmlComment, "-->");
}
compiler->syntaxError(lineno, "Invalid sequence starting with '<!'");
case '?':
idx += 2;
return xmlMarkup(T_XmlProcessingInstruction, "?>");
case '/':
idx += 2;
return T_XmlLeftAngleSlash;
default:
idx += 1;
return T_XmlLeftAngle;
}
case '/':
if (idx[1] == '>') {
idx += 2;
return T_XmlSlashRightAngle;
}
compiler->syntaxError(lineno, "Invalid sequence starting with '/'");
case '>':
idx += 1;
return T_XmlRightAngle;
case '{':
idx += 1;
return T_XmlLeftBrace;
case '}':
idx += 1;
return T_XmlRightBrace;
case '=':
idx += 1;
return T_XmlEquals;
case ' ':
case '\t':
case '\r':
case '\n':
return xmlWhitespaces();
case '"':
case '\'':
return xmlString();
default:
if (isXmlNameStart(idx[0]))
return xmlName();
else
return xmlText();
}
}
// mark has been set at the beginning of the starting punctuation,
// we wish to capture the ending punctuation as well.
Token Lexer::xmlMarkup(Token token, const char* terminator)
{
uint32_t l = lineno;
while (idx < limit && !(idx[0] == terminator[0] && idx[1] == terminator[1] && (terminator[2] == 0 || idx[2] == terminator[2]))) {
switch (idx[0]) {
case '\n':
lineno++;
break;
case '\r':
lineno++;
if (idx[1] == '\n')
idx++;
}
idx++;
}
if (idx == limit)
compiler->syntaxError(l, "Unterminated XML token");
idx += strlen(terminator);
val.s = compiler->intern(mark, uint32_t(idx-mark));
return token;
}
Token Lexer::xmlWhitespaces()
{
mark = idx;
while (idx < limit) {
switch (*idx) {
case ' ':
case '\t':
break;
case '\r':
lineno++;
if (idx[1] == '\n')
idx++;
break;
case '\n':
lineno++;
break;
default:
goto end_loop;
}
idx++;
}
end_loop:
val.s = compiler->intern(mark, uint32_t(idx-mark));
return T_XmlWhitespaces;
}
Token Lexer::xmlName()
{
AvmAssert( isXmlNameStart(*idx) );
mark = idx;
while (isXmlNameSubsequent(*idx))
idx++;
val.s = compiler->intern(mark, uint32_t(idx-mark));
return T_XmlName;
}
// mark has been set at the beginning of the starting punctuation,
// we wish to capture the ending punctuation as well.
Token Lexer::xmlString()
{
wchar terminator = *idx;
uint32_t l = lineno;
idx++;
// FIXME: account for line breaks inside xml string
while (idx < limit && *idx != terminator)
idx++;
if (idx == limit)
compiler->syntaxError(l, "Unterminated XML token");
idx++;
val.s = compiler->intern(mark, uint32_t(idx-mark));
return T_XmlString;
}
Token Lexer::xmlText()
{
mark = idx;
while (idx < limit) {
switch (*idx) {
case ' ':
case '\t':
case '\r':
case '\n':
case '{':
case '}':
case '<':
case '>':
case '/':
case '=':
goto end_loop;
default:
if (isXmlNameStart(*idx))
goto end_loop;
}
idx++;
}
end_loop:
val.s = compiler->intern(mark, uint32_t(idx-mark));
return T_XmlText;
}
bool Lexer::isXmlNameStart(wchar c)
{
// FIXME: isXmlNameStart is not quite right
return isUnicodeIdentifierStart(c) || c == ':';
}
bool Lexer::isXmlNameSubsequent(wchar c)
{
// FIXME: isXmlNameSubsequent is not quite right
return isUnicodeIdentifierPart(c) || c == ':' || c == '.' || c == '-';
}
}
}
#endif // VMCFG_EVAL