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source: code/trunk/src/external/tolua/lua/array.lua @ 10057

Last change on this file since 10057 was 5738, checked in by landauf, 15 years ago

merged libraries2 back to trunk

  • Property svn:eol-style set to native
File size: 7.1 KB
Line 
1-- tolua: array class
2-- Written by Waldemar Celes
3-- TeCGraf/PUC-Rio
4-- Jul 1999
5-- $Id: array.lua,v 1.1 2000/11/06 22:03:57 celes Exp $
6
7-- This code is free software; you can redistribute it and/or modify it.
8-- The software provided hereunder is on an "as is" basis, and
9-- the author has no obligation to provide maintenance, support, updates,
10-- enhancements, or modifications.
11
12
13-- Array class
14-- Represents a extern array variable or a public member of a class.
15-- Stores all fields present in a declaration.
16classArray = {
17}
18classArray.__index = classArray
19setmetatable(classArray,classDeclaration)
20
21-- Print method
22function classArray:print (ident,close)
23    print(ident.."Array{")
24    print(ident.." mod  = '"..self.mod.."',")
25    print(ident.." type = '"..self.type.."',")
26    print(ident.." ptr  = '"..self.ptr.."',")
27    print(ident.." name = '"..self.name.."',")
28    print(ident.." def  = '"..self.def.."',")
29    print(ident.." dim  = '"..self.dim.."',")
30    print(ident.." ret  = '"..self.ret.."',")
31    print(ident.."}"..close)
32end
33
34-- check if it is a variable
35function classArray:isvariable ()
36    return true
37end
38
39
40-- get variable value
41function classArray:getvalue (class,static)
42    if class and static then
43        return class..'::'..self.name..'[tolua_index]'
44    elseif class then
45        return 'self->'..self.name..'[tolua_index]'
46    else
47        return self.name..'[tolua_index]'
48    end
49end
50
51-- Write binding functions
52function classArray:supcode ()
53    local class = self:inclass()
54
55    -- get function ------------------------------------------------
56    if class then
57        output("/* get function:",self.name," of class ",class," */")
58    else
59        output("/* get function:",self.name," */")
60    end
61    self.cgetname = self:cfuncname("tolua_get")
62    output("#ifndef TOLUA_DISABLE_"..self.cgetname)
63    output("\nstatic int",self.cgetname,"(lua_State* tolua_S)")
64    output("{")
65    output(" int tolua_index;")
66
67    -- declare self, if the case
68    local _,_,static = strfind(self.mod,'^%s*(static)')
69    if class and static==nil then
70        output(' ',self.parent.type,'*','self;')
71        output(' lua_pushstring(tolua_S,".self");')
72        output(' lua_rawget(tolua_S,1);')
73        output(' self = ')
74        output('(',self.parent.type,'*) ')
75        output('lua_touserdata(tolua_S,-1);')
76    elseif static then
77        _,_,self.mod = strfind(self.mod,'^%s*static%s%s*(.*)')
78    end
79
80    -- check index
81    output('#ifndef TOLUA_RELEASE\n')
82    output(' {')
83    output('  tolua_Error tolua_err;')
84    output('  if (!tolua_isnumber(tolua_S,2,0,&tolua_err))')
85    output('   tolua_error(tolua_S,"#vinvalid type in array indexing.",&tolua_err);')
86    output(' }')
87    output('#endif\n')
88    if flags['1'] then -- for compatibility with tolua5 ?
89        output(' tolua_index = (int)tolua_tonumber(tolua_S,2,0)-1;')
90    else
91        output(' tolua_index = (int)tolua_tonumber(tolua_S,2,0);')
92    end
93    output('#ifndef TOLUA_RELEASE\n')
94    if self.dim and self.dim ~= '' then
95        output(' if (tolua_index<0 || tolua_index>='..self.dim..')')
96    else
97        output(' if (tolua_index<0)')
98    end
99    output('  tolua_error(tolua_S,"array indexing out of range.",NULL);')
100    output('#endif\n')
101
102    -- return value
103    local t,ct = isbasic(self.type)
104    if t then
105        output(' tolua_push'..t..'(tolua_S,(',ct,')'..self:getvalue(class,static)..');')
106    else
107        t = self.type
108        if self.ptr == '&' or self.ptr == '' then
109            output(' tolua_pushusertype(tolua_S,(void*)&'..self:getvalue(class,static)..',"',t,'");')
110        else
111            output(' tolua_pushusertype(tolua_S,(void*)'..self:getvalue(class,static)..',"',t,'");')
112        end
113    end
114    output(' return 1;')
115    output('}')
116    output('#endif //#ifndef TOLUA_DISABLE\n')
117    output('\n')
118
119    -- set function ------------------------------------------------
120    if not strfind(self.type,'const') then
121        if class then
122            output("/* set function:",self.name," of class ",class," */")
123        else
124            output("/* set function:",self.name," */")
125        end
126        self.csetname = self:cfuncname("tolua_set")
127        output("#ifndef TOLUA_DISABLE_"..self.csetname)
128        output("\nstatic int",self.csetname,"(lua_State* tolua_S)")
129        output("{")
130
131        -- declare index
132        output(' int tolua_index;')
133
134        -- declare self, if the case
135        local _,_,static = strfind(self.mod,'^%s*(static)')
136        if class and static==nil then
137            output(' ',self.parent.type,'*','self;')
138            output(' lua_pushstring(tolua_S,".self");')
139            output(' lua_rawget(tolua_S,1);')
140            output(' self = ')
141            output('(',self.parent.type,'*) ')
142            output('lua_touserdata(tolua_S,-1);')
143        elseif static then
144            _,_,self.mod = strfind(self.mod,'^%s*static%s%s*(.*)')
145        end
146
147        -- check index
148        output('#ifndef TOLUA_RELEASE\n')
149        output(' {')
150        output('  tolua_Error tolua_err;')
151        output('  if (!tolua_isnumber(tolua_S,2,0,&tolua_err))')
152        output('   tolua_error(tolua_S,"#vinvalid type in array indexing.",&tolua_err);')
153        output(' }')
154        output('#endif\n')
155
156        if flags['1'] then -- for compatibility with tolua5 ?
157            output(' tolua_index = (int)tolua_tonumber(tolua_S,2,0)-1;')
158        else
159            output(' tolua_index = (int)tolua_tonumber(tolua_S,2,0);')
160        end
161
162        output('#ifndef TOLUA_RELEASE\n')
163        if self.dim and self.dim ~= '' then
164            output(' if (tolua_index<0 || tolua_index>='..self.dim..')')
165        else
166            output(' if (tolua_index<0)')
167        end
168        output('  tolua_error(tolua_S,"array indexing out of range.",NULL);')
169        output('#endif\n')
170
171        -- assign value
172        local ptr = ''
173        if self.ptr~='' then ptr = '*' end
174            output(' ')
175        if class and static then
176            output(class..'::'..self.name..'[tolua_index]')
177        elseif class then
178            output('self->'..self.name..'[tolua_index]')
179        else
180            output(self.name..'[tolua_index]')
181        end
182        local t = isbasic(self.type)
183        output(' = ')
184        if not t and ptr=='' then output('*') end
185        output('((',self.mod,self.type)
186        if not t then
187            output('*')
188        end
189        output(') ')
190        local def = 0
191        if self.def ~= '' then def = self.def end
192        if t then
193            output('tolua_to'..t,'(tolua_S,3,',def,'));')
194        else
195            output('tolua_tousertype(tolua_S,3,',def,'));')
196        end
197        output(' return 0;')
198        output('}')
199        output('#endif //#ifndef TOLUA_DISABLE\n')
200        output('\n')
201    end
202end
203
204function classArray:register (pre)
205    pre = pre or ''
206    if self.csetname then
207        output(pre..'tolua_array(tolua_S,"'..self.lname..'",'..self.cgetname..','..self.csetname..');')
208    else
209        output(pre..'tolua_array(tolua_S,"'..self.lname..'",'..self.cgetname..',NULL);')
210    end
211end
212
213-- Internal constructor
214function _Array (t)
215    setmetatable(t,classArray)
216    append(t)
217    return t
218end
219
220-- Constructor
221-- Expects a string representing the variable declaration.
222function Array (s)
223    return _Array (Declaration(s,'var'))
224end
225
226
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