|
1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> |
|
2 <html xmlns="http://www.w3.org/1999/xhtml"> |
|
3 <head> |
|
4 <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> |
|
5 <title>TB9.2 Example Applications: examples/Base/BufsAndStrings/Lexer/Lexer.cpp Source File</title> |
|
6 <link href="tabs.css" rel="stylesheet" type="text/css"/> |
|
7 <link href="doxygen.css" rel="stylesheet" type="text/css"/> |
|
8 </head> |
|
9 <body> |
|
10 <!-- Generated by Doxygen 1.6.2 --> |
|
11 <h1>examples/Base/BufsAndStrings/Lexer/Lexer.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (c) 2000-2009 Nokia Corporation and/or its subsidiary(-ies).</span> |
|
12 <a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span> |
|
13 <a name="l00003"></a>00003 <span class="comment">// This component and the accompanying materials are made available</span> |
|
14 <a name="l00004"></a>00004 <span class="comment">// under the terms of "Eclipse Public License v1.0"</span> |
|
15 <a name="l00005"></a>00005 <span class="comment">// which accompanies this distribution, and is available</span> |
|
16 <a name="l00006"></a>00006 <span class="comment">// at the URL "http://www.eclipse.org/legal/epl-v10.html".</span> |
|
17 <a name="l00007"></a>00007 <span class="comment">//</span> |
|
18 <a name="l00008"></a>00008 <span class="comment">// Initial Contributors:</span> |
|
19 <a name="l00009"></a>00009 <span class="comment">// Nokia Corporation - initial contribution.</span> |
|
20 <a name="l00010"></a>00010 <span class="comment">//</span> |
|
21 <a name="l00011"></a>00011 <span class="comment">// Contributors:</span> |
|
22 <a name="l00012"></a>00012 <span class="comment">//</span> |
|
23 <a name="l00013"></a>00013 <span class="comment">// Description:</span> |
|
24 <a name="l00014"></a>00014 <span class="comment">//</span> |
|
25 <a name="l00015"></a>00015 |
|
26 <a name="l00016"></a>00016 <span class="preprocessor">#include <e32std.h></span> |
|
27 <a name="l00017"></a>00017 <span class="preprocessor">#include <e32cons.h></span> |
|
28 <a name="l00018"></a>00018 |
|
29 <a name="l00019"></a>00019 <span class="keyword">const</span> TInt KMaxCalcCommandBuffer=80; |
|
30 <a name="l00020"></a>00020 |
|
31 <a name="l00021"></a>00021 <span class="comment">//Common literal text</span> |
|
32 <a name="l00022"></a>00022 |
|
33 <a name="l00023"></a>00023 |
|
34 <a name="l00024"></a>00024 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtErrInExpress,<span class="stringliteral">" Error in expression, cannot evaluate. "</span>); |
|
35 <a name="l00025"></a>00025 |
|
36 <a name="l00026"></a>00026 |
|
37 <a name="l00027"></a>00027 CConsoleBase* console; |
|
38 <a name="l00028"></a>00028 |
|
39 <a name="l00029"></a>00029 |
|
40 <a name="l00031"></a>00031 <span class="comment">// Stack classes</span> |
|
41 <a name="l00033"></a>00033 <span class="comment"></span> |
|
42 <a name="l00034"></a>00034 <span class="comment">//</span> |
|
43 <a name="l00035"></a>00035 <span class="comment">// Stack element class - linked list of TReals</span> |
|
44 <a name="l00036"></a>00036 <span class="comment">//</span> |
|
45 <a name="l00037"></a>00037 |
|
46 <a name="l00038"></a>00038 <span class="keyword">class </span>CRpnStackElement : <span class="keyword">public</span> CBase |
|
47 <a name="l00039"></a>00039 { |
|
48 <a name="l00040"></a>00040 <span class="keyword">friend</span> <span class="keyword">class </span>CRpnStack ; |
|
49 <a name="l00041"></a>00041 |
|
50 <a name="l00042"></a>00042 <span class="keyword">private</span>: |
|
51 <a name="l00043"></a>00043 CRpnStackElement* iNext ; |
|
52 <a name="l00044"></a>00044 TReal iValue ; |
|
53 <a name="l00045"></a>00045 |
|
54 <a name="l00046"></a>00046 <span class="keyword">public</span>: |
|
55 <a name="l00047"></a>00047 <span class="keyword">static</span> CRpnStackElement* NewL ( <span class="keyword">const</span> TReal& aReal, CRpnStackElement* aStackElement) ; |
|
56 <a name="l00048"></a>00048 <span class="keywordtype">void</span> ConstructL (<span class="keyword">const</span> TReal& aReal, CRpnStackElement* aStackElement) ; |
|
57 <a name="l00049"></a>00049 |
|
58 <a name="l00050"></a>00050 <span class="keyword">public</span>: |
|
59 <a name="l00051"></a>00051 CRpnStackElement() {} ; |
|
60 <a name="l00052"></a>00052 } ; |
|
61 <a name="l00053"></a>00053 |
|
62 <a name="l00054"></a>00054 |
|
63 <a name="l00055"></a>00055 <span class="comment">//</span> |
|
64 <a name="l00056"></a>00056 <span class="comment">// Stack class - just constructor, destructor, push, pop & empty-test.</span> |
|
65 <a name="l00057"></a>00057 <span class="comment">//</span> |
|
66 <a name="l00058"></a>00058 |
|
67 <a name="l00059"></a>00059 <span class="keyword">class </span>CRpnStack : <span class="keyword">public</span> CBase |
|
68 <a name="l00060"></a>00060 { |
|
69 <a name="l00061"></a>00061 <span class="keyword">private</span>: |
|
70 <a name="l00062"></a>00062 CRpnStackElement* iTop ; <span class="comment">// pointer to top of stack element</span> |
|
71 <a name="l00063"></a>00063 |
|
72 <a name="l00064"></a>00064 <span class="keyword">public</span>: |
|
73 <a name="l00065"></a>00065 <span class="keyword">static</span> CRpnStack* NewL () ; |
|
74 <a name="l00066"></a>00066 <span class="keywordtype">void</span> ConstructL () ; |
|
75 <a name="l00067"></a>00067 |
|
76 <a name="l00068"></a>00068 ~CRpnStack() ; |
|
77 <a name="l00069"></a>00069 TReal Pop () ; |
|
78 <a name="l00070"></a>00070 <span class="keywordtype">void</span> Push (TReal aReal) ; |
|
79 <a name="l00071"></a>00071 TBool IsEmpty () ; |
|
80 <a name="l00072"></a>00072 } ; |
|
81 <a name="l00073"></a>00073 |
|
82 <a name="l00074"></a>00074 |
|
83 <a name="l00076"></a>00076 <span class="comment">// Stack class implementations</span> |
|
84 <a name="l00078"></a>00078 <span class="comment"></span> |
|
85 <a name="l00079"></a>00079 <span class="comment">// stack element construction (2-part)</span> |
|
86 <a name="l00080"></a>00080 CRpnStackElement* CRpnStackElement::NewL(<span class="keyword">const</span> TReal& aReal, CRpnStackElement* aStackElement) |
|
87 <a name="l00081"></a>00081 { |
|
88 <a name="l00082"></a>00082 CRpnStackElement* <span class="keyword">self</span> = <span class="keyword">new</span> (ELeave) CRpnStackElement ; |
|
89 <a name="l00083"></a>00083 CleanupStack::PushL(<span class="keyword">self</span>); |
|
90 <a name="l00084"></a>00084 <span class="keyword">self</span>->ConstructL(aReal, aStackElement); |
|
91 <a name="l00085"></a>00085 CleanupStack::Pop(); |
|
92 <a name="l00086"></a>00086 <span class="keywordflow">return</span> <span class="keyword">self</span>; |
|
93 <a name="l00087"></a>00087 } |
|
94 <a name="l00088"></a>00088 |
|
95 <a name="l00089"></a>00089 |
|
96 <a name="l00090"></a>00090 <span class="keywordtype">void</span> CRpnStackElement::ConstructL(<span class="keyword">const</span> TReal& aReal, CRpnStackElement* aStackElement) |
|
97 <a name="l00091"></a>00091 { |
|
98 <a name="l00092"></a>00092 iValue = aReal; |
|
99 <a name="l00093"></a>00093 iNext = aStackElement ; |
|
100 <a name="l00094"></a>00094 } |
|
101 <a name="l00095"></a>00095 |
|
102 <a name="l00096"></a>00096 |
|
103 <a name="l00097"></a>00097 <span class="comment">// stack construction</span> |
|
104 <a name="l00098"></a>00098 CRpnStack* CRpnStack::NewL() |
|
105 <a name="l00099"></a>00099 { |
|
106 <a name="l00100"></a>00100 CRpnStack* <span class="keyword">self</span> = <span class="keyword">new</span> (ELeave) CRpnStack ; |
|
107 <a name="l00101"></a>00101 CleanupStack::PushL(<span class="keyword">self</span>); |
|
108 <a name="l00102"></a>00102 <span class="keyword">self</span>->ConstructL(); |
|
109 <a name="l00103"></a>00103 CleanupStack::Pop(); |
|
110 <a name="l00104"></a>00104 <span class="keywordflow">return</span> <span class="keyword">self</span>; |
|
111 <a name="l00105"></a>00105 } |
|
112 <a name="l00106"></a>00106 |
|
113 <a name="l00107"></a>00107 |
|
114 <a name="l00108"></a>00108 <span class="keywordtype">void</span> CRpnStack::ConstructL() |
|
115 <a name="l00109"></a>00109 { |
|
116 <a name="l00110"></a>00110 iTop = 0 ; |
|
117 <a name="l00111"></a>00111 } |
|
118 <a name="l00112"></a>00112 |
|
119 <a name="l00113"></a>00113 |
|
120 <a name="l00114"></a>00114 <span class="comment">// stack destructor</span> |
|
121 <a name="l00115"></a>00115 CRpnStack::~CRpnStack() |
|
122 <a name="l00116"></a>00116 { |
|
123 <a name="l00117"></a>00117 <span class="keywordflow">while</span> (!IsEmpty()) |
|
124 <a name="l00118"></a>00118 Pop() ; |
|
125 <a name="l00119"></a>00119 } |
|
126 <a name="l00120"></a>00120 |
|
127 <a name="l00121"></a>00121 |
|
128 <a name="l00122"></a>00122 <span class="comment">// stack pop & delete top element</span> |
|
129 <a name="l00123"></a>00123 TReal CRpnStack::Pop () |
|
130 <a name="l00124"></a>00124 { |
|
131 <a name="l00125"></a>00125 TReal value = iTop->iValue ; <span class="comment">// get return value</span> |
|
132 <a name="l00126"></a>00126 CRpnStackElement* old = iTop ; <span class="comment">// keep old top of stack pointer</span> |
|
133 <a name="l00127"></a>00127 iTop = iTop->iNext; <span class="comment">// move top of stack pointer to next element</span> |
|
134 <a name="l00128"></a>00128 <span class="keyword">delete</span> old ; <span class="comment">// delete old top of stack element</span> |
|
135 <a name="l00129"></a>00129 old = 0 ; <span class="comment">// don't want old used again</span> |
|
136 <a name="l00130"></a>00130 <span class="keywordflow">return</span> value ; <span class="comment">// return the value</span> |
|
137 <a name="l00131"></a>00131 } |
|
138 <a name="l00132"></a>00132 |
|
139 <a name="l00133"></a>00133 |
|
140 <a name="l00134"></a>00134 <span class="comment">// stack push new element</span> |
|
141 <a name="l00135"></a>00135 <span class="keywordtype">void</span> CRpnStack::Push (TReal aReal) |
|
142 <a name="l00136"></a>00136 { |
|
143 <a name="l00137"></a>00137 TRAPD(err,iTop = CRpnStackElement::NewL(aReal, iTop)) ; |
|
144 <a name="l00138"></a>00138 <span class="keywordflow">if</span>(err) |
|
145 <a name="l00139"></a>00139 { |
|
146 <a name="l00140"></a>00140 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFormat2,<span class="stringliteral">"Push failed: leave code=%d"</span>); |
|
147 <a name="l00141"></a>00141 console->Printf(KFormat2,err); |
|
148 <a name="l00142"></a>00142 } |
|
149 <a name="l00143"></a>00143 } |
|
150 <a name="l00144"></a>00144 |
|
151 <a name="l00145"></a>00145 |
|
152 <a name="l00146"></a>00146 <span class="comment">// stack empty test</span> |
|
153 <a name="l00147"></a>00147 TBool CRpnStack::IsEmpty () |
|
154 <a name="l00148"></a>00148 { |
|
155 <a name="l00149"></a>00149 <span class="keywordflow">return</span> (iTop == 0) ; |
|
156 <a name="l00150"></a>00150 } |
|
157 <a name="l00151"></a>00151 |
|
158 <a name="l00152"></a>00152 |
|
159 <a name="l00154"></a>00154 <span class="comment">// RPN calculator engine class</span> |
|
160 <a name="l00156"></a>00156 <span class="comment"></span> |
|
161 <a name="l00157"></a>00157 <span class="keyword">class </span>CRpnCalculator |
|
162 <a name="l00158"></a>00158 { |
|
163 <a name="l00159"></a>00159 <span class="keyword">private</span>: |
|
164 <a name="l00160"></a>00160 <span class="keyword">static</span> TReal GetIntegerPart(TLex& aInput) ; |
|
165 <a name="l00161"></a>00161 <span class="keyword">static</span> TReal GetFractionalPart(TLex& aInput) ; |
|
166 <a name="l00162"></a>00162 <span class="keyword">static</span> TInt DealWithNum(CRpnStack* aStack, TLex& aInput) ; |
|
167 <a name="l00163"></a>00163 <span class="keyword">static</span> TInt RPNCalcEngineL(<span class="keyword">const</span> TDesC& aCommand, TReal& aReturnValue) ; |
|
168 <a name="l00164"></a>00164 <span class="keyword">static</span> TInt doRPNCalcEngine(TLex& aInput,CRpnStack* stack,TReal& aReturnValue); |
|
169 <a name="l00165"></a>00165 <span class="keyword">static</span> <span class="keywordtype">void</span> DisplayAnswer(TReal aValue) ; |
|
170 <a name="l00166"></a>00166 <span class="keyword">static</span> TBool TextInput(TDes& aBuf) ; |
|
171 <a name="l00167"></a>00167 <span class="keyword">public</span>: |
|
172 <a name="l00168"></a>00168 <span class="keyword">static</span> <span class="keywordtype">void</span> RunRPNCalculatorL() ; |
|
173 <a name="l00169"></a>00169 } ; |
|
174 <a name="l00170"></a>00170 |
|
175 <a name="l00171"></a>00171 |
|
176 <a name="l00173"></a>00173 <span class="comment">// RPN calculator engine : numeric routines</span> |
|
177 <a name="l00175"></a>00175 <span class="comment"></span> |
|
178 <a name="l00176"></a>00176 TReal CRpnCalculator::GetIntegerPart(TLex& aInput) |
|
179 <a name="l00177"></a>00177 <span class="comment">// Finds a UInt. Also used before decimal point for RPN TReal processing</span> |
|
180 <a name="l00178"></a>00178 { |
|
181 <a name="l00179"></a>00179 TReal accumulator = 0 ; |
|
182 <a name="l00180"></a>00180 |
|
183 <a name="l00181"></a>00181 <span class="keywordflow">while</span> ((aInput.Peek()).IsDigit()) |
|
184 <a name="l00182"></a>00182 { |
|
185 <a name="l00183"></a>00183 accumulator = (accumulator * 10) + ( (TReal)aInput.Get() - (TReal)<span class="charliteral">'0'</span> ) ; |
|
186 <a name="l00184"></a>00184 } |
|
187 <a name="l00185"></a>00185 <span class="keywordflow">return</span> accumulator ; |
|
188 <a name="l00186"></a>00186 } |
|
189 <a name="l00187"></a>00187 |
|
190 <a name="l00188"></a>00188 |
|
191 <a name="l00189"></a>00189 TReal CRpnCalculator::GetFractionalPart(TLex& aInput) |
|
192 <a name="l00190"></a>00190 <span class="comment">// Finds a UInt. Used after decimal point for RPN TReal processing</span> |
|
193 <a name="l00191"></a>00191 { |
|
194 <a name="l00192"></a>00192 TReal accumulator = 0 ; |
|
195 <a name="l00193"></a>00193 TReal multiplier = 0.1 ; |
|
196 <a name="l00194"></a>00194 |
|
197 <a name="l00195"></a>00195 <span class="keywordflow">while</span> ((aInput.Peek()).IsDigit()) |
|
198 <a name="l00196"></a>00196 { |
|
199 <a name="l00197"></a>00197 accumulator += ( (TReal)aInput.Get() - (TReal)<span class="charliteral">'0'</span> ) * multiplier ; |
|
200 <a name="l00198"></a>00198 multiplier /= 10 ; |
|
201 <a name="l00199"></a>00199 } |
|
202 <a name="l00200"></a>00200 <span class="keywordflow">return</span> accumulator ; |
|
203 <a name="l00201"></a>00201 } |
|
204 <a name="l00202"></a>00202 |
|
205 <a name="l00203"></a>00203 |
|
206 <a name="l00204"></a>00204 TInt CRpnCalculator::DealWithNum(CRpnStack* aStack, TLex& aInput) |
|
207 <a name="l00205"></a>00205 <span class="comment">// VERY basic scanning to extract and push a (Uint or real) number.</span> |
|
208 <a name="l00206"></a>00206 { |
|
209 <a name="l00207"></a>00207 TBool negative = EFalse ; |
|
210 <a name="l00208"></a>00208 TReal answer = 0 ; |
|
211 <a name="l00209"></a>00209 TLexMark startMark ; |
|
212 <a name="l00210"></a>00210 |
|
213 <a name="l00211"></a>00211 <span class="comment">// need something to parse</span> |
|
214 <a name="l00212"></a>00212 <span class="keywordflow">if</span> (aInput.Eos()) |
|
215 <a name="l00213"></a>00213 <span class="keywordflow">return</span> KErrNotFound ; |
|
216 <a name="l00214"></a>00214 <span class="keywordflow">if</span> (!(aInput.Peek().IsDigit() || (aInput.Peek() == <span class="charliteral">'.'</span>) ) ) |
|
217 <a name="l00215"></a>00215 <span class="keywordflow">return</span> KErrNotFound ; |
|
218 <a name="l00216"></a>00216 |
|
219 <a name="l00217"></a>00217 <span class="comment">// mark where we are, so can unwind</span> |
|
220 <a name="l00218"></a>00218 aInput.Mark(startMark) ; |
|
221 <a name="l00219"></a>00219 |
|
222 <a name="l00220"></a>00220 <span class="comment">// deal with sign</span> |
|
223 <a name="l00221"></a>00221 <span class="keywordflow">if</span> (aInput.Peek() == <span class="charliteral">'+'</span>) |
|
224 <a name="l00222"></a>00222 aInput.Inc() ; |
|
225 <a name="l00223"></a>00223 <span class="keywordflow">if</span> (aInput.Peek() == <span class="charliteral">'-'</span>) |
|
226 <a name="l00224"></a>00224 { |
|
227 <a name="l00225"></a>00225 aInput.Inc() ; |
|
228 <a name="l00226"></a>00226 negative = ETrue ; |
|
229 <a name="l00227"></a>00227 } |
|
230 <a name="l00228"></a>00228 |
|
231 <a name="l00229"></a>00229 <span class="comment">// check there's something to parse</span> |
|
232 <a name="l00230"></a>00230 <span class="keywordflow">if</span> (aInput.Eos()) |
|
233 <a name="l00231"></a>00231 <span class="keywordflow">return</span> KErrNotFound ; |
|
234 <a name="l00232"></a>00232 |
|
235 <a name="l00233"></a>00233 <span class="comment">// get number (may be complete integer or first part of a real)</span> |
|
236 <a name="l00234"></a>00234 <span class="keywordflow">if</span> ((aInput.Peek()).IsDigit()) |
|
237 <a name="l00235"></a>00235 answer = CRpnCalculator::GetIntegerPart(aInput) ; |
|
238 <a name="l00236"></a>00236 |
|
239 <a name="l00237"></a>00237 <span class="comment">// negate if necessary</span> |
|
240 <a name="l00238"></a>00238 <span class="keywordflow">if</span> (negative) |
|
241 <a name="l00239"></a>00239 answer *= -1 ; |
|
242 <a name="l00240"></a>00240 |
|
243 <a name="l00241"></a>00241 <span class="comment">// look for decimal point - if found, parse real number</span> |
|
244 <a name="l00242"></a>00242 <span class="keywordflow">if</span> (aInput.Peek() == <span class="charliteral">'.'</span>) |
|
245 <a name="l00243"></a>00243 { <span class="comment">// may be dealing with real number.</span> |
|
246 <a name="l00244"></a>00244 aInput.Inc() ; |
|
247 <a name="l00245"></a>00245 <span class="keywordflow">if</span> (!(aInput.Peek()).IsDigit()) |
|
248 <a name="l00246"></a>00246 { <span class="comment">// found non-digit after decimal point. Error, so rewind & exit</span> |
|
249 <a name="l00247"></a>00247 aInput.UnGetToMark(startMark) ; |
|
250 <a name="l00248"></a>00248 <span class="keywordflow">return</span> KErrCancel ; |
|
251 <a name="l00249"></a>00249 } |
|
252 <a name="l00250"></a>00250 <span class="comment">// now must parse digit(s) after decimal point</span> |
|
253 <a name="l00251"></a>00251 answer += CRpnCalculator::GetFractionalPart(aInput) ; |
|
254 <a name="l00252"></a>00252 aStack->Push(answer) ; |
|
255 <a name="l00253"></a>00253 <span class="keywordflow">return</span> KErrNone ; |
|
256 <a name="l00254"></a>00254 } |
|
257 <a name="l00255"></a>00255 <span class="keywordflow">else</span> |
|
258 <a name="l00256"></a>00256 { <span class="comment">// dealing with integer </span> |
|
259 <a name="l00257"></a>00257 aStack->Push(answer) ; |
|
260 <a name="l00258"></a>00258 <span class="keywordflow">return</span> KErrNone ; |
|
261 <a name="l00259"></a>00259 } |
|
262 <a name="l00260"></a>00260 } |
|
263 <a name="l00261"></a>00261 |
|
264 <a name="l00262"></a>00262 |
|
265 <a name="l00264"></a>00264 <span class="comment">// Main body of the RPN calculator engine : calculator</span> |
|
266 <a name="l00266"></a>00266 <span class="comment"></span> |
|
267 <a name="l00267"></a>00267 TInt CRpnCalculator::doRPNCalcEngine(TLex& aInput,CRpnStack* stack,TReal& aReturnValue) |
|
268 <a name="l00268"></a>00268 { |
|
269 <a name="l00269"></a>00269 <span class="comment">// extract a number if possible & push</span> |
|
270 <a name="l00270"></a>00270 <span class="comment">// extract token, perform operation & push result</span> |
|
271 <a name="l00271"></a>00271 <span class="comment">// if token is '=' or at end of string, pop & print value</span> |
|
272 <a name="l00272"></a>00272 TInt Err = KErrNone; |
|
273 <a name="l00273"></a>00273 TReal operand1 = 0; |
|
274 <a name="l00274"></a>00274 TReal operand2 = 0 ; |
|
275 <a name="l00275"></a>00275 TReal memory = 0 ; |
|
276 <a name="l00276"></a>00276 |
|
277 <a name="l00277"></a>00277 <span class="keywordflow">do</span> |
|
278 <a name="l00278"></a>00278 { |
|
279 <a name="l00279"></a>00279 aInput.SkipSpace() ; |
|
280 <a name="l00280"></a>00280 |
|
281 <a name="l00281"></a>00281 <span class="keywordflow">if</span> (CRpnCalculator::DealWithNum(stack, aInput)== KErrNone) ; <span class="comment">// parse for number </span> |
|
282 <a name="l00282"></a>00282 |
|
283 <a name="l00283"></a>00283 <span class="comment">/* above line can be replaced by the following equivalent code:</span> |
|
284 <a name="l00284"></a>00284 <span class="comment"> </span> |
|
285 <a name="l00285"></a>00285 <span class="comment"> if (aInput.Val(extractReal) == KErrNone)</span> |
|
286 <a name="l00286"></a>00286 <span class="comment"> stack->Push(extractReal) ;</span> |
|
287 <a name="l00287"></a>00287 <span class="comment"> else if (aInput.Val(extractUint) == KErrNone)</span> |
|
288 <a name="l00288"></a>00288 <span class="comment"> stack->Push(TReal(extractUint)) ;</span> |
|
289 <a name="l00289"></a>00289 <span class="comment"> */</span> |
|
290 <a name="l00290"></a>00290 |
|
291 <a name="l00291"></a>00291 <span class="keywordflow">else</span> <span class="keywordflow">switch</span> ( aInput.Get() ) |
|
292 <a name="l00292"></a>00292 { |
|
293 <a name="l00293"></a>00293 <span class="keywordflow">case</span><span class="charliteral">'+'</span> : |
|
294 <a name="l00294"></a>00294 <span class="keywordflow">if</span> (!stack->IsEmpty()) operand2 = stack->Pop() ; <span class="keywordflow">else</span> Err = KErrGeneral ; |
|
295 <a name="l00295"></a>00295 <span class="keywordflow">if</span> (!stack->IsEmpty()) operand1 = stack->Pop() ; <span class="keywordflow">else</span> Err = KErrGeneral; |
|
296 <a name="l00296"></a>00296 <span class="keywordflow">if</span> (Err==KErrNone) stack->Push (operand1 + operand2) ; |
|
297 <a name="l00297"></a>00297 break ; |
|
298 <a name="l00298"></a>00298 |
|
299 <a name="l00299"></a>00299 <span class="keywordflow">case</span><span class="charliteral">'-'</span> : |
|
300 <a name="l00300"></a>00300 <span class="keywordflow">if</span> (!stack->IsEmpty()) operand2 = stack->Pop() ; <span class="keywordflow">else</span> Err = KErrGeneral ; |
|
301 <a name="l00301"></a>00301 <span class="keywordflow">if</span> (!stack->IsEmpty()) operand1 = stack->Pop() ; <span class="keywordflow">else</span> Err = KErrGeneral; |
|
302 <a name="l00302"></a>00302 <span class="keywordflow">if</span> (Err==KErrNone) stack->Push (operand1 - operand2) ; |
|
303 <a name="l00303"></a>00303 break ; |
|
304 <a name="l00304"></a>00304 |
|
305 <a name="l00305"></a>00305 <span class="keywordflow">case</span> <span class="charliteral">'*'</span> : |
|
306 <a name="l00306"></a>00306 <span class="keywordflow">if</span> (!stack->IsEmpty()) operand2 = stack->Pop() ; <span class="keywordflow">else</span> Err = KErrGeneral ; |
|
307 <a name="l00307"></a>00307 <span class="keywordflow">if</span> (!stack->IsEmpty()) operand1 = stack->Pop() ; <span class="keywordflow">else</span> Err = KErrGeneral; |
|
308 <a name="l00308"></a>00308 <span class="keywordflow">if</span> (Err==KErrNone) stack->Push (operand1 * operand2) ; |
|
309 <a name="l00309"></a>00309 break ; |
|
310 <a name="l00310"></a>00310 |
|
311 <a name="l00311"></a>00311 <span class="keywordflow">case</span><span class="charliteral">'/'</span> : |
|
312 <a name="l00312"></a>00312 <span class="keywordflow">if</span> (!stack->IsEmpty()) operand2 = stack->Pop() ; <span class="keywordflow">else</span> Err = KErrGeneral ; |
|
313 <a name="l00313"></a>00313 <span class="keywordflow">if</span> (!stack->IsEmpty()) operand1 = stack->Pop() ; <span class="keywordflow">else</span> Err = KErrGeneral; |
|
314 <a name="l00314"></a>00314 <span class="keywordflow">if</span> (Err==KErrNone) stack->Push (operand1 / operand2) ; |
|
315 <a name="l00315"></a>00315 break ; |
|
316 <a name="l00316"></a>00316 |
|
317 <a name="l00317"></a>00317 <span class="keywordflow">case</span> <span class="charliteral">'='</span> : |
|
318 <a name="l00318"></a>00318 <span class="keywordflow">if</span> ( !(stack->IsEmpty() ) ) |
|
319 <a name="l00319"></a>00319 { aReturnValue = stack->Pop() ; |
|
320 <a name="l00320"></a>00320 <span class="keywordflow">return</span> KErrNone ; |
|
321 <a name="l00321"></a>00321 } |
|
322 <a name="l00322"></a>00322 <span class="keywordflow">else</span> <span class="keywordflow">return</span> KErrArgument ; |
|
323 <a name="l00323"></a>00323 |
|
324 <a name="l00324"></a>00324 <span class="comment">// not found a valid one-character symbol, try key words...</span> |
|
325 <a name="l00325"></a>00325 <span class="keywordflow">default</span> : |
|
326 <a name="l00326"></a>00326 <span class="keywordflow">if</span> (aInput.Offset() > 0) <span class="comment">// if not at start of line</span> |
|
327 <a name="l00327"></a>00327 aInput.UnGet() ; <span class="comment">// restore 'got' character</span> |
|
328 <a name="l00328"></a>00328 |
|
329 <a name="l00329"></a>00329 aInput.Mark() ; <span class="comment">// remember where we are</span> |
|
330 <a name="l00330"></a>00330 aInput.SkipCharacters() ; <span class="comment">// move to end of character token</span> |
|
331 <a name="l00331"></a>00331 |
|
332 <a name="l00332"></a>00332 |
|
333 <a name="l00333"></a>00333 <span class="keywordflow">if</span> ( aInput.TokenLength() != 0 ) <span class="comment">// if valid potential token</span> |
|
334 <a name="l00334"></a>00334 { |
|
335 <a name="l00335"></a>00335 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtMEMSET,<span class="stringliteral">"MEMSET"</span>); |
|
336 <a name="l00336"></a>00336 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtMEMGET,<span class="stringliteral">"MEMGET"</span>); |
|
337 <a name="l00337"></a>00337 TPtrC token = aInput.MarkedToken() ; <span class="comment">// extract token</span> |
|
338 <a name="l00338"></a>00338 <span class="keywordflow">if</span> ( token.CompareF(KTxtMEMSET) == 0) |
|
339 <a name="l00339"></a>00339 { |
|
340 <a name="l00340"></a>00340 <span class="keywordflow">if</span> ( !(stack->IsEmpty()) ) <span class="comment">// MEMSET - store top stack element</span> |
|
341 <a name="l00341"></a>00341 memory = stack->Pop() ; |
|
342 <a name="l00342"></a>00342 <span class="keywordflow">if</span> ( stack->IsEmpty() ) <span class="comment">// valid command, but empty stack will cause error, so</span> |
|
343 <a name="l00343"></a>00343 stack->Push(memory) ; |
|
344 <a name="l00344"></a>00344 } |
|
345 <a name="l00345"></a>00345 <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( token.CompareF(KTxtMEMGET) == 0) |
|
346 <a name="l00346"></a>00346 stack->Push (memory) ; <span class="comment">// MEMGET - push memory value</span> |
|
347 <a name="l00347"></a>00347 <span class="keywordflow">else</span> |
|
348 <a name="l00348"></a>00348 <span class="keywordflow">return</span> KErrNotSupported ; <span class="comment">// unrecognised token</span> |
|
349 <a name="l00349"></a>00349 } |
|
350 <a name="l00350"></a>00350 <span class="keywordflow">else</span> <span class="comment">// exit - can't be anything else</span> |
|
351 <a name="l00351"></a>00351 { |
|
352 <a name="l00352"></a>00352 <span class="keywordflow">return</span> KErrGeneral ; |
|
353 <a name="l00353"></a>00353 } |
|
354 <a name="l00354"></a>00354 } ; <span class="comment">// end switch</span> |
|
355 <a name="l00355"></a>00355 <span class="keywordflow">if</span> (Err == KErrGeneral) |
|
356 <a name="l00356"></a>00356 <span class="comment">// error in expression (usually as there aren't 2 stack elements for token to operate on)</span> |
|
357 <a name="l00357"></a>00357 <span class="keywordflow">return</span> KErrArgument ; |
|
358 <a name="l00358"></a>00358 |
|
359 <a name="l00359"></a>00359 } <span class="keywordflow">while</span> (!aInput.Eos()) ; |
|
360 <a name="l00360"></a>00360 |
|
361 <a name="l00361"></a>00361 <span class="keywordflow">if</span> ( !(stack->IsEmpty() ) ) |
|
362 <a name="l00362"></a>00362 { |
|
363 <a name="l00363"></a>00363 aReturnValue = stack->Pop() ; |
|
364 <a name="l00364"></a>00364 <span class="keywordflow">return</span> KErrNone ; |
|
365 <a name="l00365"></a>00365 } |
|
366 <a name="l00366"></a>00366 <span class="keywordflow">else</span> <span class="keywordflow">return</span> KErrArgument ; |
|
367 <a name="l00367"></a>00367 } |
|
368 <a name="l00368"></a>00368 |
|
369 <a name="l00369"></a>00369 |
|
370 <a name="l00370"></a>00370 |
|
371 <a name="l00372"></a>00372 <span class="comment">// RPN calculator engine : calculator</span> |
|
372 <a name="l00374"></a>00374 <span class="comment"></span> |
|
373 <a name="l00375"></a>00375 TInt CRpnCalculator::RPNCalcEngineL(<span class="keyword">const</span> TDesC& aCommand, TReal& aReturnValue) |
|
374 <a name="l00376"></a>00376 { |
|
375 <a name="l00377"></a>00377 TInt ret; |
|
376 <a name="l00378"></a>00378 TLex input(aCommand); |
|
377 <a name="l00379"></a>00379 |
|
378 <a name="l00380"></a>00380 CRpnStack* stack = CRpnStack::NewL(); |
|
379 <a name="l00381"></a>00381 CleanupStack::PushL(stack); |
|
380 <a name="l00382"></a>00382 ret = CRpnCalculator::doRPNCalcEngine(input,stack,aReturnValue); |
|
381 <a name="l00383"></a>00383 CleanupStack::PopAndDestroy(); |
|
382 <a name="l00384"></a>00384 <span class="keywordflow">return</span> ret; |
|
383 <a name="l00385"></a>00385 } |
|
384 <a name="l00386"></a>00386 |
|
385 <a name="l00387"></a>00387 |
|
386 <a name="l00388"></a>00388 |
|
387 <a name="l00390"></a>00390 <span class="comment">// RPN calculator UI : display routines</span> |
|
388 <a name="l00392"></a>00392 <span class="comment"></span> |
|
389 <a name="l00393"></a>00393 <span class="keywordtype">void</span> CRpnCalculator::DisplayAnswer(TReal aValue) |
|
390 <a name="l00394"></a>00394 { |
|
391 <a name="l00395"></a>00395 TRealFormat format ; |
|
392 <a name="l00396"></a>00396 TBuf<0x100> convertRealToString; |
|
393 <a name="l00397"></a>00397 |
|
394 <a name="l00398"></a>00398 <span class="comment">// want a TLex from the value</span> |
|
395 <a name="l00399"></a>00399 |
|
396 <a name="l00400"></a>00400 <span class="keywordflow">if</span> (convertRealToString.Num(aValue,format) < KErrNone ) <span class="comment">// if -ve, is an error, not a string length </span> |
|
397 <a name="l00401"></a>00401 console->Printf(KTxtErrInExpress); |
|
398 <a name="l00402"></a>00402 <span class="keywordflow">else</span> |
|
399 <a name="l00403"></a>00403 { |
|
400 <a name="l00404"></a>00404 convertRealToString.ZeroTerminate(); |
|
401 <a name="l00405"></a>00405 |
|
402 <a name="l00406"></a>00406 TLex string(convertRealToString) ; |
|
403 <a name="l00407"></a>00407 <span class="comment">// got a TLex</span> |
|
404 <a name="l00408"></a>00408 |
|
405 <a name="l00409"></a>00409 TLexMark start ; |
|
406 <a name="l00410"></a>00410 <span class="keywordtype">string</span>.Mark (start) ; <span class="comment">// remember start of string position</span> |
|
407 <a name="l00411"></a>00411 |
|
408 <a name="l00412"></a>00412 <span class="comment">// run through string, setting 'end' to last digit found</span> |
|
409 <a name="l00413"></a>00413 <span class="keywordflow">while</span> (!<span class="keywordtype">string</span>.Eos() ) |
|
410 <a name="l00414"></a>00414 { |
|
411 <a name="l00415"></a>00415 <span class="keywordflow">if</span> ( !(<span class="keywordtype">string</span>.Get() == <span class="charliteral">'0'</span>) ) <span class="keywordtype">string</span>.Mark() ; |
|
412 <a name="l00416"></a>00416 } |
|
413 <a name="l00417"></a>00417 |
|
414 <a name="l00418"></a>00418 <span class="keywordtype">string</span>.UnGetToMark() ; <span class="comment">// reset next character pointer to last digit</span> |
|
415 <a name="l00419"></a>00419 <span class="comment">// if Mark points to decimal point and not at Eos (i.e. a zero follows), include the zero</span> |
|
416 <a name="l00420"></a>00420 <span class="keywordflow">if</span> ( <span class="keywordtype">string</span>.Get() == <span class="charliteral">'.'</span> && !<span class="keywordtype">string</span>.Eos() ) |
|
417 <a name="l00421"></a>00421 <span class="keywordtype">string</span>.Mark() ; |
|
418 <a name="l00422"></a>00422 |
|
419 <a name="l00423"></a>00423 <span class="comment">// display spaces after entered line</span> |
|
420 <a name="l00424"></a>00424 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtSpaces,<span class="stringliteral">" "</span>); |
|
421 <a name="l00425"></a>00425 console->Write(KTxtSpaces) ; |
|
422 <a name="l00426"></a>00426 <span class="comment">// set Mark to start of string and display answer</span> |
|
423 <a name="l00427"></a>00427 console->Write( <span class="keywordtype">string</span>.MarkedToken(start) ) ; |
|
424 <a name="l00428"></a>00428 } |
|
425 <a name="l00429"></a>00429 } |
|
426 <a name="l00430"></a>00430 |
|
427 <a name="l00431"></a>00431 |
|
428 <a name="l00433"></a>00433 <span class="comment">// RPN calculator UI : line input routine (adapted from tuiedit)</span> |
|
429 <a name="l00435"></a>00435 <span class="comment"></span> |
|
430 <a name="l00436"></a>00436 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtBackSlashSeven,<span class="stringliteral">"\7"</span>); |
|
431 <a name="l00437"></a>00437 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtCursor,<span class="stringliteral">"_"</span>); |
|
432 <a name="l00438"></a>00438 |
|
433 <a name="l00439"></a>00439 TBool CRpnCalculator::TextInput(TDes& aBuf) |
|
434 <a name="l00440"></a>00440 { |
|
435 <a name="l00441"></a>00441 TInt pos; |
|
436 <a name="l00442"></a>00442 |
|
437 <a name="l00443"></a>00443 pos = 0; |
|
438 <a name="l00444"></a>00444 aBuf.Zero(); |
|
439 <a name="l00445"></a>00445 console->SetPos(0); |
|
440 <a name="l00446"></a>00446 console->Write(KTxtCursor) ; <span class="comment">// "cursor"</span> |
|
441 <a name="l00447"></a>00447 console->SetPos(0); |
|
442 <a name="l00448"></a>00448 |
|
443 <a name="l00449"></a>00449 FOREVER |
|
444 <a name="l00450"></a>00450 { |
|
445 <a name="l00451"></a>00451 TChar gChar=console->Getch(); |
|
446 <a name="l00452"></a>00452 <span class="keywordflow">switch</span> (gChar) |
|
447 <a name="l00453"></a>00453 { |
|
448 <a name="l00454"></a>00454 <span class="keywordflow">case</span> EKeyEscape: |
|
449 <a name="l00455"></a>00455 <span class="keywordflow">return</span> (EFalse); |
|
450 <a name="l00456"></a>00456 <span class="keywordflow">case</span> EKeyEnter: |
|
451 <a name="l00457"></a>00457 <span class="keywordflow">return</span> (ETrue); |
|
452 <a name="l00458"></a>00458 <span class="keywordflow">case</span> EKeyBackspace: |
|
453 <a name="l00459"></a>00459 <span class="keywordflow">if</span> (pos) |
|
454 <a name="l00460"></a>00460 { |
|
455 <a name="l00461"></a>00461 pos--; |
|
456 <a name="l00462"></a>00462 aBuf.Delete(pos,1); |
|
457 <a name="l00463"></a>00463 } |
|
458 <a name="l00464"></a>00464 <span class="keywordflow">break</span>; |
|
459 <a name="l00465"></a>00465 <span class="keywordflow">default</span>: |
|
460 <a name="l00466"></a>00466 <span class="keywordflow">if</span> (!gChar.IsPrint()) |
|
461 <a name="l00467"></a>00467 <span class="keywordflow">break</span>; |
|
462 <a name="l00468"></a>00468 <span class="keywordflow">else</span> |
|
463 <a name="l00469"></a>00469 <span class="keywordflow">if</span> ((aBuf.Length()<KMaxCalcCommandBuffer)&&(pos<KDefaultConsWidth-3)) |
|
464 <a name="l00470"></a>00470 { |
|
465 <a name="l00471"></a>00471 TBuf<0x02> b; |
|
466 <a name="l00472"></a>00472 b.Append(gChar); |
|
467 <a name="l00473"></a>00473 aBuf.Insert(pos++,b); |
|
468 <a name="l00474"></a>00474 } |
|
469 <a name="l00475"></a>00475 <span class="keywordflow">else</span> |
|
470 <a name="l00476"></a>00476 { |
|
471 <a name="l00477"></a>00477 console->Write(KTxtBackSlashSeven); |
|
472 <a name="l00478"></a>00478 <span class="keywordflow">break</span>; |
|
473 <a name="l00479"></a>00479 } |
|
474 <a name="l00480"></a>00480 } |
|
475 <a name="l00481"></a>00481 console->SetPos(pos) ; |
|
476 <a name="l00482"></a>00482 console->ClearToEndOfLine(); |
|
477 <a name="l00483"></a>00483 console->SetPos(0); |
|
478 <a name="l00484"></a>00484 console->Write(aBuf); |
|
479 <a name="l00485"></a>00485 console->Write(KTxtCursor) ; <span class="comment">// "cursor"</span> |
|
480 <a name="l00486"></a>00486 console->SetPos(pos); |
|
481 <a name="l00487"></a>00487 } |
|
482 <a name="l00488"></a>00488 } |
|
483 <a name="l00489"></a>00489 |
|
484 <a name="l00490"></a>00490 |
|
485 <a name="l00492"></a>00492 <span class="comment">// finally the RPN calculator's driver code</span> |
|
486 <a name="l00494"></a>00494 <span class="comment"></span> |
|
487 <a name="l00495"></a>00495 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtStartingRPNCalc,<span class="stringliteral">"Starting RPN Calculator\n\n"</span>); |
|
488 <a name="l00496"></a>00496 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtNewLine,<span class="stringliteral">" \n"</span>); |
|
489 <a name="l00497"></a>00497 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtInvite,<span class="stringliteral">"Type in a Reverse Polish\nexpression.\nPress ENTER to evaluate it\nPress ESC to end\n"</span>); |
|
490 <a name="l00498"></a>00498 |
|
491 <a name="l00499"></a>00499 |
|
492 <a name="l00500"></a>00500 |
|
493 <a name="l00501"></a>00501 <span class="keywordtype">void</span> CRpnCalculator::RunRPNCalculatorL() |
|
494 <a name="l00502"></a>00502 { |
|
495 <a name="l00503"></a>00503 TBuf<KMaxCalcCommandBuffer> command; |
|
496 <a name="l00504"></a>00504 |
|
497 <a name="l00505"></a>00505 console->Printf(KTxtStartingRPNCalc); |
|
498 <a name="l00506"></a>00506 console->Printf(KTxtInvite); |
|
499 <a name="l00507"></a>00507 |
|
500 <a name="l00508"></a>00508 <span class="keywordflow">while</span> (CRpnCalculator::TextInput(command) ) |
|
501 <a name="l00509"></a>00509 { |
|
502 <a name="l00510"></a>00510 TReal answer; |
|
503 <a name="l00511"></a>00511 |
|
504 <a name="l00512"></a>00512 <span class="keywordflow">if</span> (CRpnCalculator::RPNCalcEngineL(command, answer) == KErrNone ) |
|
505 <a name="l00513"></a>00513 CRpnCalculator::DisplayAnswer(answer) ; |
|
506 <a name="l00514"></a>00514 <span class="keywordflow">else</span> |
|
507 <a name="l00515"></a>00515 console->Printf(KTxtErrInExpress) ; |
|
508 <a name="l00516"></a>00516 |
|
509 <a name="l00517"></a>00517 console->Printf(KTxtNewLine) ; |
|
510 <a name="l00518"></a>00518 console->Printf(KTxtInvite); |
|
511 <a name="l00519"></a>00519 } |
|
512 <a name="l00520"></a>00520 } |
|
513 <a name="l00521"></a>00521 |
|
514 <a name="l00522"></a>00522 |
|
515 <a name="l00524"></a>00524 <span class="comment">// This section deals with Symbian platform initialisation and ensuring we have a console active</span> |
|
516 <a name="l00526"></a>00526 <span class="comment"></span> |
|
517 <a name="l00527"></a>00527 |
|
518 <a name="l00528"></a>00528 <span class="keywordtype">void</span> SetupConsoleL(); |
|
519 <a name="l00529"></a>00529 |
|
520 <a name="l00530"></a>00530 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtRPNCalcErr,<span class="stringliteral">"RPN Calculator example error"</span>); |
|
521 <a name="l00531"></a>00531 |
|
522 <a name="l00532"></a>00532 GLDEF_C TInt E32Main() <span class="comment">// main function called by E32</span> |
|
523 <a name="l00533"></a>00533 { |
|
524 <a name="l00534"></a>00534 CTrapCleanup* cleanup=CTrapCleanup::New(); <span class="comment">// get clean-up stack</span> |
|
525 <a name="l00535"></a>00535 TRAPD(error,SetupConsoleL()); <span class="comment">// more initialization, then do example</span> |
|
526 <a name="l00536"></a>00536 __ASSERT_ALWAYS(!error,User::Panic(KTxtRPNCalcErr,error)); |
|
527 <a name="l00537"></a>00537 <span class="keyword">delete</span> cleanup; <span class="comment">// destroy clean-up stack</span> |
|
528 <a name="l00538"></a>00538 <span class="keywordflow">return</span> 0; <span class="comment">// and return</span> |
|
529 <a name="l00539"></a>00539 } |
|
530 <a name="l00540"></a>00540 |
|
531 <a name="l00541"></a>00541 |
|
532 <a name="l00542"></a>00542 <span class="keywordtype">void</span> SetupConsoleL() <span class="comment">// initialize and call example code under cleanup stack</span> |
|
533 <a name="l00543"></a>00543 { |
|
534 <a name="l00544"></a>00544 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtIntro,<span class="stringliteral">"eulexrpn - RPN Calculator"</span>); |
|
535 <a name="l00545"></a>00545 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFormat1,<span class="stringliteral">"failed: leave code=%d"</span>); |
|
536 <a name="l00546"></a>00546 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtPressAnyKey,<span class="stringliteral">"[Press any key to exit]"</span>); |
|
537 <a name="l00547"></a>00547 |
|
538 <a name="l00548"></a>00548 console=Console::NewL(KTxtIntro,TSize(KConsFullScreen,KConsFullScreen)); |
|
539 <a name="l00549"></a>00549 CleanupStack::PushL(console); |
|
540 <a name="l00550"></a>00550 TRAPD(error, CRpnCalculator::RunRPNCalculatorL()); <span class="comment">// perform example function</span> |
|
541 <a name="l00551"></a>00551 <span class="keywordflow">if</span> (error) |
|
542 <a name="l00552"></a>00552 console->Printf(KFormat1, error); |
|
543 <a name="l00553"></a>00553 console->Printf(KTxtPressAnyKey); |
|
544 <a name="l00554"></a>00554 console->Getch(); <span class="comment">// get and ignore character</span> |
|
545 <a name="l00555"></a>00555 CleanupStack::PopAndDestroy(); <span class="comment">// close console</span> |
|
546 <a name="l00556"></a>00556 } |
|
547 <a name="l00557"></a>00557 |
|
548 <a name="l00558"></a>00558 |
|
549 </pre></div></div> |
|
550 <hr size="1"/><address style="text-align: right;"><small>Generated by |
|
551 <a href="http://www.doxygen.org/index.html"> |
|
552 <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.2 </small></address> |
|
553 </body> |
|
554 </html> |