summaryrefslogtreecommitdiff
path: root/indra/llcommon/llsdparam.h
blob: 7cfc265c628b3346928f595a734b04d0ebed5213 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
/** 
 * @file llsdparam.h
 * @brief parameter block abstraction for creating complex objects and 
 * parsing construction parameters from xml and LLSD
 *
 * $LicenseInfo:firstyear=2008&license=viewerlgpl$
 * 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_LLSDPARAM_H
#define LL_LLSDPARAM_H

#include "llinitparam.h"
#include "boost/function.hpp"
#include "llfasttimer.h"

struct LL_COMMON_API LLParamSDParserUtilities
{
	static LLSD& getSDWriteNode(LLSD& input, LLInitParam::Parser::name_stack_range_t& name_stack_range);

	typedef boost::function<void (const LLSD&, LLInitParam::Parser::name_stack_t&)> read_sd_cb_t;
	static void readSDValues(read_sd_cb_t cb, const LLSD& sd, LLInitParam::Parser::name_stack_t& stack);
	static void readSDValues(read_sd_cb_t cb, const LLSD& sd);
};

class LL_COMMON_API LLParamSDParser 
:	public LLInitParam::Parser
{
LOG_CLASS(LLParamSDParser);

typedef LLInitParam::Parser parser_t;

public:
	LLParamSDParser();
	void readSD(const LLSD& sd, LLInitParam::BaseBlock& block, bool silent = false);
	template<typename BLOCK>
	void writeSD(LLSD& sd, 
		const BLOCK& block, 
		const LLInitParam::predicate_rule_t rules = LLInitParam::default_parse_rules(),
		const LLInitParam::BaseBlock* diff_block = NULL)
	{
		if (!diff_block 
			&& !rules.isAmbivalent(LLInitParam::HAS_DEFAULT_VALUE))
		{
			diff_block = &LLInitParam::defaultValue<BLOCK>();
		}
		writeSDImpl(sd, block, rules, diff_block);
	}

	/*virtual*/ std::string getCurrentElementName();

private:
	void writeSDImpl(LLSD& sd, 
		const LLInitParam::BaseBlock& block, 
		const LLInitParam::predicate_rule_t,
		const LLInitParam::BaseBlock* diff_block);

	void submit(LLInitParam::BaseBlock& block, const LLSD& sd, LLInitParam::Parser::name_stack_t& name_stack);

	template<typename T>
	static bool writeTypedValue(Parser& parser, const void* val_ptr, parser_t::name_stack_t& name_stack)
	{
		LLParamSDParser& sdparser = static_cast<LLParamSDParser&>(parser);
		if (!sdparser.mWriteRootSD) return false;
		
		LLInitParam::Parser::name_stack_range_t range(name_stack.begin(), name_stack.end());
		LLSD& sd_to_write = LLParamSDParserUtilities::getSDWriteNode(*sdparser.mWriteRootSD, range);

		sd_to_write.assign(*((const T*)val_ptr));
		return true;
	}

	static bool writeU32Param(Parser& parser, const void* value_ptr, parser_t::name_stack_t& name_stack);
	static bool writeFlag(Parser& parser, const void* value_ptr, parser_t::name_stack_t& name_stack);

	static bool readFlag(Parser& parser, void* val_ptr);
	static bool readS32(Parser& parser, void* val_ptr);
	static bool readU32(Parser& parser, void* val_ptr);
	static bool readF32(Parser& parser, void* val_ptr);
	static bool readF64(Parser& parser, void* val_ptr);
	static bool readBool(Parser& parser, void* val_ptr);
	static bool readString(Parser& parser, void* val_ptr);
	static bool readUUID(Parser& parser, void* val_ptr);
	static bool readDate(Parser& parser, void* val_ptr);
	static bool readURI(Parser& parser, void* val_ptr);
	static bool readSD(Parser& parser, void* val_ptr);

	Parser::name_stack_t	mNameStack;
	const LLSD*				mCurReadSD;
	LLSD*					mWriteRootSD;
	LLSD*					mCurWriteSD;
};


extern LL_COMMON_API LLFastTimer::DeclareTimer FTM_SD_PARAM_ADAPTOR;
template<typename T>
class LLSDParamAdapter : public T
{
public:
	LLSDParamAdapter() {}
	LLSDParamAdapter(const LLSD& sd)
	{
		LLFastTimer _(FTM_SD_PARAM_ADAPTOR);
		LLParamSDParser parser;
		// don't spam for implicit parsing of LLSD, as we want to allow arbitrary freeform data and ignore most of it
		bool parse_silently = true;
		parser.readSD(sd, *this, parse_silently);
	}

	operator LLSD() const
	{
		LLParamSDParser parser;
		LLSD sd;
		parser.writeSD(sd, *this);
		return sd;
	}
		
	LLSDParamAdapter(const T& val)
	: T(val)
	{
		T::operator=(val);
	}
};

#endif // LL_LLSDPARAM_H