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 <span id="projectnumber">53.1</span>
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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) 1999-2012, 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="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#ifndef __UTF16_H__</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor"></span><span class="preprocessor">#define __UTF16_H__</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#include "<a class="code" href="umachine_8h.html">unicode/umachine.h</a>"</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#ifndef __UTF_H__</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor"></span><span class="preprocessor"># include "<a class="code" href="utf_8h.html">unicode/utf.h</a>"</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment">/* single-code point definitions -------------------------------------------- */</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div>
<div class="line"><a name="l00048"></a><span class="lineno"><a class="line" href="utf16_8h.html#a35f04f1f6e7f0965a66b5268eec29b99"> 48</a></span> <span class="preprocessor">#define U16_IS_SINGLE(c) !U_IS_SURROGATE(c)</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00056"></a><span class="lineno"><a class="line" href="utf16_8h.html#ace839ae31a801fd9c53fa67c5f8b9144"> 56</a></span> <span class="preprocessor">#define U16_IS_LEAD(c) (((c)&0xfffffc00)==0xd800)</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00064"></a><span class="lineno"><a class="line" href="utf16_8h.html#afe8d9f450b9297897f018c2f23eb0724"> 64</a></span> <span class="preprocessor">#define U16_IS_TRAIL(c) (((c)&0xfffffc00)==0xdc00)</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00072"></a><span class="lineno"><a class="line" href="utf16_8h.html#ac25b589c0c9b60160d357770fad39cea"> 72</a></span> <span class="preprocessor">#define U16_IS_SURROGATE(c) U_IS_SURROGATE(c)</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00081"></a><span class="lineno"><a class="line" href="utf16_8h.html#a6e141a548138e8c24822d219b7e06cb4"> 81</a></span> <span class="preprocessor">#define U16_IS_SURROGATE_LEAD(c) (((c)&0x400)==0)</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00090"></a><span class="lineno"><a class="line" href="utf16_8h.html#a1da8c1409deafe3ac32a8ab506086c10"> 90</a></span> <span class="preprocessor">#define U16_IS_SURROGATE_TRAIL(c) (((c)&0x400)!=0)</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00096"></a><span class="lineno"><a class="line" href="utf16_8h.html#a5b15d2eeb271d0a6d92c854681ebaf20"> 96</a></span> <span class="preprocessor">#define U16_SURROGATE_OFFSET ((0xd800<<10UL)+0xdc00-0x10000)</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00109"></a><span class="lineno"><a class="line" href="utf16_8h.html#ac1deffbf1956d9fe696129515e88f006"> 109</a></span> <span class="preprocessor">#define U16_GET_SUPPLEMENTARY(lead, trail) \</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="preprocessor"> (((UChar32)(lead)<<10UL)+(UChar32)(trail)-U16_SURROGATE_OFFSET)</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div>
<div class="line"><a name="l00120"></a><span class="lineno"><a class="line" href="utf16_8h.html#ad0e832d06991f5f07a43d68d202165b1"> 120</a></span> <span class="preprocessor">#define U16_LEAD(supplementary) (UChar)(((supplementary)>>10)+0xd7c0)</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00129"></a><span class="lineno"><a class="line" href="utf16_8h.html#abf0698cf645946911b2e10d3ab890321"> 129</a></span> <span class="preprocessor">#define U16_TRAIL(supplementary) (UChar)(((supplementary)&0x3ff)|0xdc00)</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00138"></a><span class="lineno"><a class="line" href="utf16_8h.html#add0a383d49e1ca81e2920d25883a56a9"> 138</a></span> <span class="preprocessor">#define U16_LENGTH(c) ((uint32_t)(c)<=0xffff ? 1 : 2)</span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00145"></a><span class="lineno"><a class="line" href="utf16_8h.html#ab14454ab71a81f0cf86e523e50690eee"> 145</a></span> <span class="preprocessor">#define U16_MAX_LENGTH 2</span></div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00164"></a><span class="lineno"><a class="line" href="utf16_8h.html#af2c94fe2b41f2d73e7600c1ab1ca3b9b"> 164</a></span> <span class="preprocessor">#define U16_GET_UNSAFE(s, i, c) { \</span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> <span class="preprocessor"> (c)=(s)[i]; \</span></div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="preprocessor"> if(U16_IS_SURROGATE(c)) { \</span></div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="preprocessor"> if(U16_IS_SURROGATE_LEAD(c)) { \</span></div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="preprocessor"> (c)=U16_GET_SUPPLEMENTARY((c), (s)[(i)+1]); \</span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="preprocessor"> } else { \</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="preprocessor"> (c)=U16_GET_SUPPLEMENTARY((s)[(i)-1], (c)); \</span></div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="preprocessor"> } \</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="l00198"></a><span class="lineno"><a class="line" href="utf16_8h.html#aa354b12f5f755fe734f957cde6d68bbe"> 198</a></span> <span class="preprocessor">#define U16_GET(s, start, i, length, c) { \</span></div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span> <span class="preprocessor"> (c)=(s)[i]; \</span></div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="preprocessor"> if(U16_IS_SURROGATE(c)) { \</span></div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="preprocessor"> uint16_t __c2; \</span></div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> <span class="preprocessor"> if(U16_IS_SURROGATE_LEAD(c)) { \</span></div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> <span class="preprocessor"> if((i)+1!=(length) && U16_IS_TRAIL(__c2=(s)[(i)+1])) { \</span></div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span> <span class="preprocessor"> (c)=U16_GET_SUPPLEMENTARY((c), __c2); \</span></div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span> <span class="preprocessor"> } else { \</span></div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> <span class="preprocessor"> if((i)>(start) && U16_IS_LEAD(__c2=(s)[(i)-1])) { \</span></div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span> <span class="preprocessor"> (c)=U16_GET_SUPPLEMENTARY(__c2, (c)); \</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="preprocessor"></span></div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> <span class="comment">/* definitions with forward iteration --------------------------------------- */</span></div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span> </div>
<div class="line"><a name="l00235"></a><span class="lineno"><a class="line" href="utf16_8h.html#ae98a64ae0f42bc6ad4179293c3638be4"> 235</a></span> <span class="preprocessor">#define U16_NEXT_UNSAFE(s, i, c) { \</span></div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span> <span class="preprocessor"> (c)=(s)[(i)++]; \</span></div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span> <span class="preprocessor"> if(U16_IS_LEAD(c)) { \</span></div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span> <span class="preprocessor"> (c)=U16_GET_SUPPLEMENTARY((c), (s)[(i)++]); \</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="l00241"></a><span class="lineno"> 241</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00264"></a><span class="lineno"><a class="line" href="utf16_8h.html#a844bb48486904fdca40c8b883e9c80ee"> 264</a></span> <span class="preprocessor">#define U16_NEXT(s, i, length, c) { \</span></div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span> <span class="preprocessor"> (c)=(s)[(i)++]; \</span></div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span> <span class="preprocessor"> if(U16_IS_LEAD(c)) { \</span></div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span> <span class="preprocessor"> uint16_t __c2; \</span></div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span> <span class="preprocessor"> if((i)!=(length) && U16_IS_TRAIL(__c2=(s)[(i)])) { \</span></div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span> <span class="preprocessor"> ++(i); \</span></div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span> <span class="preprocessor"> (c)=U16_GET_SUPPLEMENTARY((c), __c2); \</span></div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00288"></a><span class="lineno"><a class="line" href="utf16_8h.html#aea8253343c96066779cd3383080cafa8"> 288</a></span> <span class="preprocessor">#define U16_APPEND_UNSAFE(s, i, c) { \</span></div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span> <span class="preprocessor"> if((uint32_t)(c)<=0xffff) { \</span></div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span> <span class="preprocessor"> (s)[(i)++]=(uint16_t)(c); \</span></div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span> <span class="preprocessor"> } else { \</span></div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span> <span class="preprocessor"> (s)[(i)++]=(uint16_t)(((c)>>10)+0xd7c0); \</span></div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span> <span class="preprocessor"> (s)[(i)++]=(uint16_t)(((c)&0x3ff)|0xdc00); \</span></div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00314"></a><span class="lineno"><a class="line" href="utf16_8h.html#a30e185424986bca1790c1ffe1e2a93b5"> 314</a></span> <span class="preprocessor">#define U16_APPEND(s, i, capacity, c, isError) { \</span></div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span> <span class="preprocessor"> if((uint32_t)(c)<=0xffff) { \</span></div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span> <span class="preprocessor"> (s)[(i)++]=(uint16_t)(c); \</span></div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span> <span class="preprocessor"> } else if((uint32_t)(c)<=0x10ffff && (i)+1<(capacity)) { \</span></div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span> <span class="preprocessor"> (s)[(i)++]=(uint16_t)(((c)>>10)+0xd7c0); \</span></div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span> <span class="preprocessor"> (s)[(i)++]=(uint16_t)(((c)&0x3ff)|0xdc00); \</span></div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</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="l00321"></a><span class="lineno"> 321</span> <span class="preprocessor"> (isError)=TRUE; \</span></div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00335"></a><span class="lineno"><a class="line" href="utf16_8h.html#a148111a5adbb596ad3b6c2e3e3cf7cec"> 335</a></span> <span class="preprocessor">#define U16_FWD_1_UNSAFE(s, i) { \</span></div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span> <span class="preprocessor"> if(U16_IS_LEAD((s)[(i)++])) { \</span></div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span> <span class="preprocessor"> ++(i); \</span></div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00354"></a><span class="lineno"><a class="line" href="utf16_8h.html#a6c79f8f5377e1d4abba0e108be553512"> 354</a></span> <span class="preprocessor">#define U16_FWD_1(s, i, length) { \</span></div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span> <span class="preprocessor"> if(U16_IS_LEAD((s)[(i)++]) && (i)!=(length) && U16_IS_TRAIL((s)[i])) { \</span></div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span> <span class="preprocessor"> ++(i); \</span></div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00372"></a><span class="lineno"><a class="line" href="utf16_8h.html#a6632ab346045ebb4fa2d358f19bbd907"> 372</a></span> <span class="preprocessor">#define U16_FWD_N_UNSAFE(s, i, n) { \</span></div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span> <span class="preprocessor"> int32_t __N=(n); \</span></div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span> <span class="preprocessor"> while(__N>0) { \</span></div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span> <span class="preprocessor"> U16_FWD_1_UNSAFE(s, i); \</span></div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span> <span class="preprocessor"> --__N; \</span></div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00395"></a><span class="lineno"><a class="line" href="utf16_8h.html#ad70d5a679bd03c63131219c7808d9de9"> 395</a></span> <span class="preprocessor">#define U16_FWD_N(s, i, length, n) { \</span></div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span> <span class="preprocessor"> int32_t __N=(n); \</span></div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span> <span class="preprocessor"> while(__N>0 && ((i)<(length) || ((length)<0 && (s)[i]!=0))) { \</span></div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span> <span class="preprocessor"> U16_FWD_1(s, i, length); \</span></div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span> <span class="preprocessor"> --__N; \</span></div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00416"></a><span class="lineno"><a class="line" href="utf16_8h.html#ade68651cb87ae4cd94cec2d0036ac9c6"> 416</a></span> <span class="preprocessor">#define U16_SET_CP_START_UNSAFE(s, i) { \</span></div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span> <span class="preprocessor"> if(U16_IS_TRAIL((s)[i])) { \</span></div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span> <span class="preprocessor"> --(i); \</span></div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00436"></a><span class="lineno"><a class="line" href="utf16_8h.html#a31c914801f71204ee90caa6c4d0c3c1b"> 436</a></span> <span class="preprocessor">#define U16_SET_CP_START(s, start, i) { \</span></div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</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="l00438"></a><span class="lineno"> 438</span> <span class="preprocessor"> --(i); \</span></div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span> <span class="comment">/* definitions with backward iteration -------------------------------------- */</span></div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span> </div>
<div class="line"><a name="l00464"></a><span class="lineno"><a class="line" href="utf16_8h.html#a4cccc93c8a8e5d438ff6d0371a7a3937"> 464</a></span> <span class="preprocessor">#define U16_PREV_UNSAFE(s, i, c) { \</span></div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span> <span class="preprocessor"> (c)=(s)[--(i)]; \</span></div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span> <span class="preprocessor"> if(U16_IS_TRAIL(c)) { \</span></div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span> <span class="preprocessor"> (c)=U16_GET_SUPPLEMENTARY((s)[--(i)], (c)); \</span></div>
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00492"></a><span class="lineno"><a class="line" href="utf16_8h.html#a592fa1f80da119e1c4565dc9193c18d9"> 492</a></span> <span class="preprocessor">#define U16_PREV(s, start, i, c) { \</span></div>
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span> <span class="preprocessor"> (c)=(s)[--(i)]; \</span></div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span> <span class="preprocessor"> if(U16_IS_TRAIL(c)) { \</span></div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span> <span class="preprocessor"> uint16_t __c2; \</span></div>
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span> <span class="preprocessor"> if((i)>(start) && U16_IS_LEAD(__c2=(s)[(i)-1])) { \</span></div>
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span> <span class="preprocessor"> --(i); \</span></div>
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span> <span class="preprocessor"> (c)=U16_GET_SUPPLEMENTARY(__c2, (c)); \</span></div>
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00514"></a><span class="lineno"><a class="line" href="utf16_8h.html#aad03daaa2706b094ea7d454d6842f8c4"> 514</a></span> <span class="preprocessor">#define U16_BACK_1_UNSAFE(s, i) { \</span></div>
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span> <span class="preprocessor"> if(U16_IS_TRAIL((s)[--(i)])) { \</span></div>
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span> <span class="preprocessor"> --(i); \</span></div>
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00532"></a><span class="lineno"><a class="line" href="utf16_8h.html#a5f48fd46255969ea3175b3946cf4de80"> 532</a></span> <span class="preprocessor">#define U16_BACK_1(s, start, i) { \</span></div>
<div class="line"><a name="l00533"></a><span class="lineno"> 533</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="l00534"></a><span class="lineno"> 534</span> <span class="preprocessor"> --(i); \</span></div>
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00537"></a><span class="lineno"> 537</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00551"></a><span class="lineno"><a class="line" href="utf16_8h.html#afa230a7bea98dc8b5b3cd3d936126c6b"> 551</a></span> <span class="preprocessor">#define U16_BACK_N_UNSAFE(s, i, n) { \</span></div>
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span> <span class="preprocessor"> int32_t __N=(n); \</span></div>
<div class="line"><a name="l00553"></a><span class="lineno"> 553</span> <span class="preprocessor"> while(__N>0) { \</span></div>
<div class="line"><a name="l00554"></a><span class="lineno"> 554</span> <span class="preprocessor"> U16_BACK_1_UNSAFE(s, i); \</span></div>
<div class="line"><a name="l00555"></a><span class="lineno"> 555</span> <span class="preprocessor"> --__N; \</span></div>
<div class="line"><a name="l00556"></a><span class="lineno"> 556</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00557"></a><span class="lineno"> 557</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00558"></a><span class="lineno"> 558</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00573"></a><span class="lineno"><a class="line" href="utf16_8h.html#a0a69bdb829f995ad82cb50071f578887"> 573</a></span> <span class="preprocessor">#define U16_BACK_N(s, start, i, n) { \</span></div>
<div class="line"><a name="l00574"></a><span class="lineno"> 574</span> <span class="preprocessor"> int32_t __N=(n); \</span></div>
<div class="line"><a name="l00575"></a><span class="lineno"> 575</span> <span class="preprocessor"> while(__N>0 && (i)>(start)) { \</span></div>
<div class="line"><a name="l00576"></a><span class="lineno"> 576</span> <span class="preprocessor"> U16_BACK_1(s, start, i); \</span></div>
<div class="line"><a name="l00577"></a><span class="lineno"> 577</span> <span class="preprocessor"> --__N; \</span></div>
<div class="line"><a name="l00578"></a><span class="lineno"> 578</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00579"></a><span class="lineno"> 579</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00580"></a><span class="lineno"> 580</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00594"></a><span class="lineno"><a class="line" href="utf16_8h.html#a4d3e9ee47d4fdb9fbf93a98ee1248c81"> 594</a></span> <span class="preprocessor">#define U16_SET_CP_LIMIT_UNSAFE(s, i) { \</span></div>
<div class="line"><a name="l00595"></a><span class="lineno"> 595</span> <span class="preprocessor"> if(U16_IS_LEAD((s)[(i)-1])) { \</span></div>
<div class="line"><a name="l00596"></a><span class="lineno"> 596</span> <span class="preprocessor"> ++(i); \</span></div>
<div class="line"><a name="l00597"></a><span class="lineno"> 597</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00598"></a><span class="lineno"> 598</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00599"></a><span class="lineno"> 599</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00617"></a><span class="lineno"><a class="line" href="utf16_8h.html#a3d5ff64af4bf16cbf9a830743a5c74a4"> 617</a></span> <span class="preprocessor">#define U16_SET_CP_LIMIT(s, start, i, length) { \</span></div>
<div class="line"><a name="l00618"></a><span class="lineno"> 618</span> <span class="preprocessor"> if((start)<(i) && ((i)<(length) || (length)<0) && U16_IS_LEAD((s)[(i)-1]) && U16_IS_TRAIL((s)[i])) { \</span></div>
<div class="line"><a name="l00619"></a><span class="lineno"> 619</span> <span class="preprocessor"> ++(i); \</span></div>
<div class="line"><a name="l00620"></a><span class="lineno"> 620</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00621"></a><span class="lineno"> 621</span> <span class="preprocessor">}</span></div>
<div class="line"><a name="l00622"></a><span class="lineno"> 622</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00623"></a><span class="lineno"> 623</span> <span class="preprocessor">#endif</span></div>
<div class="ttc" id="umachine_8h_html"><div class="ttname"><a href="umachine_8h.html">umachine.h</a></div><div class="ttdoc">Basic types and constants for UTF. </div></div>
<div class="ttc" id="utf_8h_html"><div class="ttname"><a href="utf_8h.html">utf.h</a></div><div class="ttdoc">C API: Code point macros. </div></div>
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