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<div id="projectname">ICU 4.8.1.1
 <span id="projectnumber">4.8.1.1</span>
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<li class="navelem"><a class="el" href="dir_bdd9a5d540de89e9fe90efdfc6973a4f.html">common</a></li><li class="navelem"><a class="el" href="dir_f59c6450ff718ff1b085cfd1c36acbd7.html">unicode</a></li> </ul>
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<div class="title">utf16.h</div> </div>
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<a href="utf16_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">*******************************************************************************</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">*</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">* Copyright (C) 1999-2010, International Business Machines</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">* Corporation and others. All Rights Reserved.</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">*</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">*******************************************************************************</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">* file name: utf16.h</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">* encoding: US-ASCII</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">* tab size: 8 (not used)</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">* indentation:4</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">*</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">* created on: 1999sep09</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">* created by: Markus W. Scherer</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment">*/</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#ifndef __UTF16_H__</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor"></span><span class="preprocessor">#define __UTF16_H__</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment">/* utf.h must be included first. */</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor">#ifndef __UTF_H__</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor"></span><span class="preprocessor"># include "<a class="code" href="utf_8h.html" title="C API: Code point macros.">unicode/utf.h</a>"</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment">/* single-code point definitions -------------------------------------------- */</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> </div>
<div class="line"><a name="l00050"></a><span class="lineno"><a class="code" href="utf16_8h.html#a35f04f1f6e7f0965a66b5268eec29b99"> 50</a></span> <span class="preprocessor">#define U16_IS_SINGLE(c) !U_IS_SURROGATE(c)</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00058"></a><span class="lineno"><a class="code" href="utf16_8h.html#ace839ae31a801fd9c53fa67c5f8b9144"> 58</a></span> <span class="preprocessor">#define U16_IS_LEAD(c) (((c)&0xfffffc00)==0xd800)</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00066"></a><span class="lineno"><a class="code" href="utf16_8h.html#afe8d9f450b9297897f018c2f23eb0724"> 66</a></span> <span class="preprocessor">#define U16_IS_TRAIL(c) (((c)&0xfffffc00)==0xdc00)</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00074"></a><span class="lineno"><a class="code" href="utf16_8h.html#ac25b589c0c9b60160d357770fad39cea"> 74</a></span> <span class="preprocessor">#define U16_IS_SURROGATE(c) U_IS_SURROGATE(c)</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00083"></a><span class="lineno"><a class="code" href="utf16_8h.html#a6e141a548138e8c24822d219b7e06cb4"> 83</a></span> <span class="preprocessor">#define U16_IS_SURROGATE_LEAD(c) (((c)&0x400)==0)</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00092"></a><span class="lineno"><a class="code" href="utf16_8h.html#a1da8c1409deafe3ac32a8ab506086c10"> 92</a></span> <span class="preprocessor">#define U16_IS_SURROGATE_TRAIL(c) (((c)&0x400)!=0)</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00098"></a><span class="lineno"><a class="code" href="utf16_8h.html#a5b15d2eeb271d0a6d92c854681ebaf20"> 98</a></span> <span class="preprocessor">#define U16_SURROGATE_OFFSET ((0xd800<<10UL)+0xdc00-0x10000)</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00111"></a><span class="lineno"><a class="code" href="utf16_8h.html#ac1deffbf1956d9fe696129515e88f006"> 111</a></span> <span class="preprocessor">#define U16_GET_SUPPLEMENTARY(lead, trail) \</span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="preprocessor"> (((UChar32)(lead)<<10UL)+(UChar32)(trail)-U16_SURROGATE_OFFSET)</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> </div>
<div class="line"><a name="l00122"></a><span class="lineno"><a class="code" href="utf16_8h.html#ad0e832d06991f5f07a43d68d202165b1"> 122</a></span> <span class="preprocessor">#define U16_LEAD(supplementary) (UChar)(((supplementary)>>10)+0xd7c0)</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00131"></a><span class="lineno"><a class="code" href="utf16_8h.html#abf0698cf645946911b2e10d3ab890321"> 131</a></span> <span class="preprocessor">#define U16_TRAIL(supplementary) (UChar)(((supplementary)&0x3ff)|0xdc00)</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00140"></a><span class="lineno"><a class="code" href="utf16_8h.html#add0a383d49e1ca81e2920d25883a56a9"> 140</a></span> <span class="preprocessor">#define U16_LENGTH(c) ((uint32_t)(c)<=0xffff ? 1 : 2)</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00147"></a><span class="lineno"><a class="code" href="utf16_8h.html#ab14454ab71a81f0cf86e523e50690eee"> 147</a></span> <span class="preprocessor">#define U16_MAX_LENGTH 2</span></div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00166"></a><span class="lineno"><a class="code" href="utf16_8h.html#af2c94fe2b41f2d73e7600c1ab1ca3b9b"> 166</a></span> <span class="preprocessor">#define U16_GET_UNSAFE(s, i, c) { \</span></div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="preprocessor"> (c)=(s)[i]; \</span></div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="preprocessor"> if(U16_IS_SURROGATE(c)) { \</span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="preprocessor"> if(U16_IS_SURROGATE_LEAD(c)) { \</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="preprocessor"> (c)=U16_GET_SUPPLEMENTARY((c), (s)[(i)+1]); \</span></div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> <span class="preprocessor"> } else { \</span></div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="preprocessor"> (c)=U16_GET_SUPPLEMENTARY((s)[(i)-1], (c)); \</span></div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00197"></a><span class="lineno"><a class="code" href="utf16_8h.html#aa354b12f5f755fe734f957cde6d68bbe"> 197</a></span> <span class="preprocessor">#define U16_GET(s, start, i, length, c) { \</span></div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span> <span class="preprocessor"> (c)=(s)[i]; \</span></div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span> <span class="preprocessor"> if(U16_IS_SURROGATE(c)) { \</span></div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="preprocessor"> uint16_t __c2; \</span></div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="preprocessor"> if(U16_IS_SURROGATE_LEAD(c)) { \</span></div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> <span class="preprocessor"> if((i)+1<(length) && U16_IS_TRAIL(__c2=(s)[(i)+1])) { \</span></div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> <span class="preprocessor"> (c)=U16_GET_SUPPLEMENTARY((c), __c2); \</span></div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> <span class="preprocessor"> } else { \</span></div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span> <span class="preprocessor"> if((i)>(start) && U16_IS_LEAD(__c2=(s)[(i)-1])) { \</span></div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> <span class="preprocessor"> (c)=U16_GET_SUPPLEMENTARY(__c2, (c)); \</span></div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> <span class="comment">/* definitions with forward iteration --------------------------------------- */</span></div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> </div>
<div class="line"><a name="l00234"></a><span class="lineno"><a class="code" href="utf16_8h.html#ae98a64ae0f42bc6ad4179293c3638be4"> 234</a></span> <span class="preprocessor">#define U16_NEXT_UNSAFE(s, i, c) { \</span></div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span> <span class="preprocessor"> (c)=(s)[(i)++]; \</span></div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span> <span class="preprocessor"> if(U16_IS_LEAD(c)) { \</span></div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span> <span class="preprocessor"> (c)=U16_GET_SUPPLEMENTARY((c), (s)[(i)++]); \</span></div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00261"></a><span class="lineno"><a class="code" href="utf16_8h.html#a844bb48486904fdca40c8b883e9c80ee"> 261</a></span> <span class="preprocessor">#define U16_NEXT(s, i, length, c) { \</span></div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span> <span class="preprocessor"> (c)=(s)[(i)++]; \</span></div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span> <span class="preprocessor"> if(U16_IS_LEAD(c)) { \</span></div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span> <span class="preprocessor"> uint16_t __c2; \</span></div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span> <span class="preprocessor"> if((i)<(length) && U16_IS_TRAIL(__c2=(s)[(i)])) { \</span></div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span> <span class="preprocessor"> ++(i); \</span></div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span> <span class="preprocessor"> (c)=U16_GET_SUPPLEMENTARY((c), __c2); \</span></div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00285"></a><span class="lineno"><a class="code" href="utf16_8h.html#aea8253343c96066779cd3383080cafa8"> 285</a></span> <span class="preprocessor">#define U16_APPEND_UNSAFE(s, i, c) { \</span></div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span> <span class="preprocessor"> if((uint32_t)(c)<=0xffff) { \</span></div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span> <span class="preprocessor"> (s)[(i)++]=(uint16_t)(c); \</span></div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span> <span class="preprocessor"> } else { \</span></div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span> <span class="preprocessor"> (s)[(i)++]=(uint16_t)(((c)>>10)+0xd7c0); \</span></div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span> <span class="preprocessor"> (s)[(i)++]=(uint16_t)(((c)&0x3ff)|0xdc00); \</span></div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00311"></a><span class="lineno"><a class="code" href="utf16_8h.html#a30e185424986bca1790c1ffe1e2a93b5"> 311</a></span> <span class="preprocessor">#define U16_APPEND(s, i, capacity, c, isError) { \</span></div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span> <span class="preprocessor"> if((uint32_t)(c)<=0xffff) { \</span></div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span> <span class="preprocessor"> (s)[(i)++]=(uint16_t)(c); \</span></div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span> <span class="preprocessor"> } else if((uint32_t)(c)<=0x10ffff && (i)+1<(capacity)) { \</span></div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span> <span class="preprocessor"> (s)[(i)++]=(uint16_t)(((c)>>10)+0xd7c0); \</span></div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span> <span class="preprocessor"> (s)[(i)++]=(uint16_t)(((c)&0x3ff)|0xdc00); \</span></div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span> <span class="preprocessor"> } else </span><span class="comment">/* c>0x10ffff or not enough space */</span><span class="preprocessor"> { \</span></div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span> <span class="preprocessor"> (isError)=TRUE; \</span></div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00332"></a><span class="lineno"><a class="code" href="utf16_8h.html#a148111a5adbb596ad3b6c2e3e3cf7cec"> 332</a></span> <span class="preprocessor">#define U16_FWD_1_UNSAFE(s, i) { \</span></div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span> <span class="preprocessor"> if(U16_IS_LEAD((s)[(i)++])) { \</span></div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span> <span class="preprocessor"> ++(i); \</span></div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00349"></a><span class="lineno"><a class="code" href="utf16_8h.html#a6c79f8f5377e1d4abba0e108be553512"> 349</a></span> <span class="preprocessor">#define U16_FWD_1(s, i, length) { \</span></div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span> <span class="preprocessor"> if(U16_IS_LEAD((s)[(i)++]) && (i)<(length) && U16_IS_TRAIL((s)[i])) { \</span></div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span> <span class="preprocessor"> ++(i); \</span></div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00367"></a><span class="lineno"><a class="code" href="utf16_8h.html#a6632ab346045ebb4fa2d358f19bbd907"> 367</a></span> <span class="preprocessor">#define U16_FWD_N_UNSAFE(s, i, n) { \</span></div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span> <span class="preprocessor"> int32_t __N=(n); \</span></div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span> <span class="preprocessor"> while(__N>0) { \</span></div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span> <span class="preprocessor"> U16_FWD_1_UNSAFE(s, i); \</span></div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span> <span class="preprocessor"> --__N; \</span></div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00388"></a><span class="lineno"><a class="code" href="utf16_8h.html#ad70d5a679bd03c63131219c7808d9de9"> 388</a></span> <span class="preprocessor">#define U16_FWD_N(s, i, length, n) { \</span></div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span> <span class="preprocessor"> int32_t __N=(n); \</span></div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span> <span class="preprocessor"> while(__N>0 && (i)<(length)) { \</span></div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span> <span class="preprocessor"> U16_FWD_1(s, i, length); \</span></div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span> <span class="preprocessor"> --__N; \</span></div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00409"></a><span class="lineno"><a class="code" href="utf16_8h.html#ade68651cb87ae4cd94cec2d0036ac9c6"> 409</a></span> <span class="preprocessor">#define U16_SET_CP_START_UNSAFE(s, i) { \</span></div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span> <span class="preprocessor"> if(U16_IS_TRAIL((s)[i])) { \</span></div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span> <span class="preprocessor"> --(i); \</span></div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00429"></a><span class="lineno"><a class="code" href="utf16_8h.html#a31c914801f71204ee90caa6c4d0c3c1b"> 429</a></span> <span class="preprocessor">#define U16_SET_CP_START(s, start, i) { \</span></div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span> <span class="preprocessor"> if(U16_IS_TRAIL((s)[i]) && (i)>(start) && U16_IS_LEAD((s)[(i)-1])) { \</span></div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span> <span class="preprocessor"> --(i); \</span></div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span> <span class="comment">/* definitions with backward iteration -------------------------------------- */</span></div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span> </div>
<div class="line"><a name="l00457"></a><span class="lineno"><a class="code" href="utf16_8h.html#a4cccc93c8a8e5d438ff6d0371a7a3937"> 457</a></span> <span class="preprocessor">#define U16_PREV_UNSAFE(s, i, c) { \</span></div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span> <span class="preprocessor"> (c)=(s)[--(i)]; \</span></div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span> <span class="preprocessor"> if(U16_IS_TRAIL(c)) { \</span></div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span> <span class="preprocessor"> (c)=U16_GET_SUPPLEMENTARY((s)[--(i)], (c)); \</span></div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00485"></a><span class="lineno"><a class="code" href="utf16_8h.html#a592fa1f80da119e1c4565dc9193c18d9"> 485</a></span> <span class="preprocessor">#define U16_PREV(s, start, i, c) { \</span></div>
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span> <span class="preprocessor"> (c)=(s)[--(i)]; \</span></div>
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span> <span class="preprocessor"> if(U16_IS_TRAIL(c)) { \</span></div>
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span> <span class="preprocessor"> uint16_t __c2; \</span></div>
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span> <span class="preprocessor"> if((i)>(start) && U16_IS_LEAD(__c2=(s)[(i)-1])) { \</span></div>
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span> <span class="preprocessor"> --(i); \</span></div>
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span> <span class="preprocessor"> (c)=U16_GET_SUPPLEMENTARY(__c2, (c)); \</span></div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00507"></a><span class="lineno"><a class="code" href="utf16_8h.html#aad03daaa2706b094ea7d454d6842f8c4"> 507</a></span> <span class="preprocessor">#define U16_BACK_1_UNSAFE(s, i) { \</span></div>
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span> <span class="preprocessor"> if(U16_IS_TRAIL((s)[--(i)])) { \</span></div>
<div class="line"><a name="l00509"></a><span class="lineno"> 509</span> <span class="preprocessor"> --(i); \</span></div>
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00525"></a><span class="lineno"><a class="code" href="utf16_8h.html#a5f48fd46255969ea3175b3946cf4de80"> 525</a></span> <span class="preprocessor">#define U16_BACK_1(s, start, i) { \</span></div>
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span> <span class="preprocessor"> if(U16_IS_TRAIL((s)[--(i)]) && (i)>(start) && U16_IS_LEAD((s)[(i)-1])) { \</span></div>
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span> <span class="preprocessor"> --(i); \</span></div>
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00544"></a><span class="lineno"><a class="code" href="utf16_8h.html#afa230a7bea98dc8b5b3cd3d936126c6b"> 544</a></span> <span class="preprocessor">#define U16_BACK_N_UNSAFE(s, i, n) { \</span></div>
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span> <span class="preprocessor"> int32_t __N=(n); \</span></div>
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span> <span class="preprocessor"> while(__N>0) { \</span></div>
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span> <span class="preprocessor"> U16_BACK_1_UNSAFE(s, i); \</span></div>
<div class="line"><a name="l00548"></a><span class="lineno"> 548</span> <span class="preprocessor"> --__N; \</span></div>
<div class="line"><a name="l00549"></a><span class="lineno"> 549</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00566"></a><span class="lineno"><a class="code" href="utf16_8h.html#a0a69bdb829f995ad82cb50071f578887"> 566</a></span> <span class="preprocessor">#define U16_BACK_N(s, start, i, n) { \</span></div>
<div class="line"><a name="l00567"></a><span class="lineno"> 567</span> <span class="preprocessor"> int32_t __N=(n); \</span></div>
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span> <span class="preprocessor"> while(__N>0 && (i)>(start)) { \</span></div>
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span> <span class="preprocessor"> U16_BACK_1(s, start, i); \</span></div>
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span> <span class="preprocessor"> --__N; \</span></div>
<div class="line"><a name="l00571"></a><span class="lineno"> 571</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00572"></a><span class="lineno"> 572</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00573"></a><span class="lineno"> 573</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00587"></a><span class="lineno"><a class="code" href="utf16_8h.html#a4d3e9ee47d4fdb9fbf93a98ee1248c81"> 587</a></span> <span class="preprocessor">#define U16_SET_CP_LIMIT_UNSAFE(s, i) { \</span></div>
<div class="line"><a name="l00588"></a><span class="lineno"> 588</span> <span class="preprocessor"> if(U16_IS_LEAD((s)[(i)-1])) { \</span></div>
<div class="line"><a name="l00589"></a><span class="lineno"> 589</span> <span class="preprocessor"> ++(i); \</span></div>
<div class="line"><a name="l00590"></a><span class="lineno"> 590</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00591"></a><span class="lineno"> 591</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00592"></a><span class="lineno"> 592</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00608"></a><span class="lineno"><a class="code" href="utf16_8h.html#a3d5ff64af4bf16cbf9a830743a5c74a4"> 608</a></span> <span class="preprocessor">#define U16_SET_CP_LIMIT(s, start, i, length) { \</span></div>
<div class="line"><a name="l00609"></a><span class="lineno"> 609</span> <span class="preprocessor"> if((start)<(i) && (i)<(length) && U16_IS_LEAD((s)[(i)-1]) && U16_IS_TRAIL((s)[i])) { \</span></div>
<div class="line"><a name="l00610"></a><span class="lineno"> 610</span> <span class="preprocessor"> ++(i); \</span></div>
<div class="line"><a name="l00611"></a><span class="lineno"> 611</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00612"></a><span class="lineno"> 612</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00613"></a><span class="lineno"> 613</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00614"></a><span class="lineno"> 614</span> <span class="preprocessor">#endif</span></div>
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