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/**
* @file llkeywords.h
* @brief Keyword list for LSL
*
* $LicenseInfo:firstyear=2001&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#ifndef LL_LLKEYWORDS_H
#define LL_LLKEYWORDS_H
#include "lldir.h"
#include "llstyle.h"
#include "llstring.h"
#include "v3color.h"
#include "v4color.h"
#include <map>
#include <list>
#include <deque>
#include "llpointer.h"
class LLTextSegment;
typedef LLPointer<LLTextSegment> LLTextSegmentPtr;
class LLKeywordToken
{
public:
/**
* @brief Types of tokens/delimters being parsed.
*
* @desc Tokens/delimiters that need to be identified/highlighted. All are terminated if an EOF is encountered.
* - TT_WORD are keywords in the normal sense, i.e. constants, events, etc.
* - TT_LINE are for entire lines (currently only flow control labels use this).
* - TT_ONE_SIDED_DELIMITER are for open-ended delimiters which are terminated by EOL.
* - TT_TWO_SIDED_DELIMITER are for delimiters that end with a different delimiter than they open with.
* - TT_DOUBLE_QUOTATION_MARKS are for delimiting areas using the same delimiter to open and close.
*/
typedef enum e_token_type
{
TT_UNKNOWN,
TT_WORD,
TT_LINE,
TT_TWO_SIDED_DELIMITER,
TT_ONE_SIDED_DELIMITER,
TT_DOUBLE_QUOTATION_MARKS,
// Following constants are more specific versions of the preceding ones
TT_CONSTANT, // WORD
TT_CONTROL, // WORD
TT_EVENT, // WORD
TT_FUNCTION, // WORD
TT_LABEL, // LINE
TT_SECTION, // WORD
TT_TYPE // WORD
} ETokenType;
LLKeywordToken( ETokenType type, const LLColor4& color, const LLWString& token, const LLWString& tool_tip, const LLWString& delimiter )
:
mType( type ),
mToken( token ),
mColor( color ),
mToolTip( tool_tip ),
mDelimiter( delimiter ) // right delimiter
{
}
S32 getLengthHead() const { return static_cast<S32>(mToken.size()); }
S32 getLengthTail() const { return static_cast<S32>(mDelimiter.size()); }
bool isHead(const llwchar* s) const;
bool isTail(const llwchar* s) const;
const LLWString& getToken() const { return mToken; }
const LLColor4& getColor() const { return mColor; }
ETokenType getType() const { return mType; }
const LLWString& getToolTip() const { return mToolTip; }
const LLWString& getDelimiter() const { return mDelimiter; }
#ifdef _DEBUG
void dump();
#endif
private:
ETokenType mType;
LLWString mToken;
LLColor4 mColor;
LLWString mToolTip;
LLWString mDelimiter;
};
class LLKeywords
{
public:
LLKeywords();
~LLKeywords();
void clearLoaded() { mLoaded = false; }
LLColor4 getColorGroup(const std::string& key_in);
bool isLoaded() const { return mLoaded; }
void findSegments(std::vector<LLTextSegmentPtr> *seg_list,
const LLWString& text,
class LLTextEditor& editor,
LLStyleConstSP style);
void initialize(LLSD SyntaxXML);
void processTokens();
// Add the token as described
void addToken(LLKeywordToken::ETokenType type,
const std::string& key,
const LLColor4& color,
const std::string& tool_tip = LLStringUtil::null,
const std::string& delimiter = LLStringUtil::null);
// This class is here as a performance optimization.
// The word token map used to be defined as std::map<LLWString, LLKeywordToken*>.
// This worked, but caused a performance bottleneck due to memory allocation and string copies
// because it's not possible to search such a map without creating an LLWString.
// Using this class as the map index instead allows us to search using segments of an existing
// text run without copying them first, which greatly reduces overhead in LLKeywords::findSegments().
class WStringMapIndex
{
public:
// copy constructor
WStringMapIndex(const WStringMapIndex& other);
// constructor from a string (copies the string's data into the new object)
WStringMapIndex(const LLWString& str);
// constructor from pointer and length
// NOTE: does NOT copy data, caller must ensure that the lifetime of the pointer exceeds that of the new object!
WStringMapIndex(const llwchar *start, size_t length);
~WStringMapIndex();
bool operator<(const WStringMapIndex &other) const;
private:
void copyData(const llwchar *start, size_t length);
const llwchar *mData;
size_t mLength;
bool mOwner;
LLColor4 mColor;
};
typedef std::map<WStringMapIndex, LLKeywordToken*> word_token_map_t;
typedef word_token_map_t::const_iterator keyword_iterator_t;
keyword_iterator_t begin() const { return mWordTokenMap.begin(); }
keyword_iterator_t end() const { return mWordTokenMap.end(); }
typedef std::map<WStringMapIndex, LLColor4> group_color_map_t;
typedef group_color_map_t::const_iterator color_iterator_t;
group_color_map_t mColorGroupMap;
#ifdef _DEBUG
void dump();
#endif
protected:
void processTokensGroup(const LLSD& Tokens, const std::string& Group);
void insertSegment(std::vector<LLTextSegmentPtr>& seg_list,
LLTextSegmentPtr new_segment,
S32 text_len,
const LLColor4 &defaultColor,
class LLTextEditor& editor);
void insertSegments(const LLWString& wtext,
std::vector<LLTextSegmentPtr>& seg_list,
LLKeywordToken* token,
S32 text_len,
S32 seg_start,
S32 seg_end,
LLStyleConstSP style,
LLTextEditor& editor);
void insertSegment(std::vector<LLTextSegmentPtr>& seg_list, LLTextSegmentPtr new_segment, S32 text_len, LLStyleConstSP style, LLTextEditor& editor );
bool mLoaded;
LLSD mSyntax;
word_token_map_t mWordTokenMap;
typedef std::deque<LLKeywordToken*> token_list_t;
token_list_t mLineTokenList;
token_list_t mDelimiterTokenList;
typedef std::map<std::string, std::string> element_attributes_t;
typedef element_attributes_t::const_iterator attribute_iterator_t;
element_attributes_t mAttributes;
std::string getAttribute(const std::string& key);
std::string getArguments(LLSD& arguments);
};
#endif // LL_LLKEYWORDS_H
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