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Diffstat (limited to 'html/038new_text.cc.html')
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diff --git a/html/038new_text.cc.html b/html/038new_text.cc.html new file mode 100644 index 00000000..e18505e9 --- /dev/null +++ b/html/038new_text.cc.html @@ -0,0 +1,161 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> +<html> +<head> +<meta http-equiv="content-type" content="text/html; charset=UTF-8"> +<title>Mu - 038new_text.cc</title> +<meta name="Generator" content="Vim/7.4"> +<meta name="plugin-version" content="vim7.4_v2"> +<meta name="syntax" content="cpp"> +<meta name="settings" content="use_css,pre_wrap,no_foldcolumn,expand_tabs,prevent_copy="> +<meta name="colorscheme" content="minimal"> +<style type="text/css"> +<!-- +pre { white-space: pre-wrap; font-family: monospace; color: #eeeeee; background-color: #080808; } +body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color: #080808; } +* { font-size: 12pt; font-size: 1em; } +.Constant { color: #00a0a0; } +.traceContains { color: #008000; } +.Comment { color: #9090ff; } +.Delimiter { color: #800080; } +.Special { color: #c00000; } +.Identifier { color: #fcb165; } +.Normal { color: #eeeeee; background-color: #080808; padding-bottom: 1px; } +.CommentedCode { color: #6c6c6c; } +--> +</style> + +<script type='text/javascript'> +<!-- + +--> +</script> +</head> +<body> +<pre id='vimCodeElement'> +<span class="Comment">//: Extend 'new' to handle a unicode string literal argument.</span> + +<span class="Delimiter">:(scenario new_string)</span> +def main [ + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span><span class="Normal">new</span> [abc def] + <span class="Constant">2</span>:character<span class="Special"> <- </span>index *<span class="Constant">1</span>:address:array:character<span class="Delimiter">,</span> <span class="Constant">5</span> +] +<span class="Comment"># number code for 'e'</span> +<span class="traceContains">+mem: storing 101 in location 2</span> + +<span class="Delimiter">:(scenario new_string_handles_unicode)</span> +def main [ + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span><span class="Normal">new</span> [a«c] + <span class="Constant">2</span>:number<span class="Special"> <- </span>length *<span class="Constant">1</span>:address:array:character + <span class="Constant">3</span>:character<span class="Special"> <- </span>index *<span class="Constant">1</span>:address:array:character<span class="Delimiter">,</span> <span class="Constant">1</span> +] +<span class="traceContains">+mem: storing 3 in location 2</span> +<span class="Comment"># unicode for '«'</span> +<span class="traceContains">+mem: storing 171 in location 3</span> + +<span class="Delimiter">:(before "End NEW Check Special-cases")</span> +<span class="Normal">if</span> <span class="Delimiter">(</span>is_literal_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Identifier">break</span><span class="Delimiter">;</span> +<span class="Delimiter">:(before "Convert 'new' To 'allocate'")</span> +<span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>name == <span class="Constant">"new"</span> && is_literal_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span> +<span class="Delimiter">:(after "case NEW" following "Primitive Recipe Implementations")</span> + <span class="Normal">if</span> <span class="Delimiter">(</span>is_literal_string<span class="Delimiter">(</span>current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span> + products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span> + products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span>new_mu_string<span class="Delimiter">(</span>current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>name<span class="Delimiter">));</span> + trace<span class="Delimiter">(</span><span class="Constant">9999</span><span class="Delimiter">,</span> <span class="Constant">"mem"</span><span class="Delimiter">)</span> << <span class="Constant">"new string alloc: "</span> << products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> << end<span class="Delimiter">();</span> + <span class="Identifier">break</span><span class="Delimiter">;</span> + <span class="Delimiter">}</span> + +<span class="Delimiter">:(code)</span> +<span class="Normal">int</span> new_mu_string<span class="Delimiter">(</span><span class="Normal">const</span> string& contents<span class="Delimiter">)</span> <span class="Delimiter">{</span> + <span class="Comment">// allocate an array just large enough for it</span> + <span class="Normal">int</span> string_length = unicode_length<span class="Delimiter">(</span>contents<span class="Delimiter">);</span> +<span class="CommentedCode">//? Total_alloc += string_length+1;</span> +<span class="CommentedCode">//? Num_alloc++;</span> + ensure_space<span class="Delimiter">(</span>string_length+<span class="Constant">1</span><span class="Delimiter">);</span> <span class="Comment">// don't forget the extra location for array size</span> + <span class="Comment">// initialize string</span> + <span class="Normal">int</span> result = Current_routine<span class="Delimiter">-></span>alloc<span class="Delimiter">;</span> + <span class="Comment">// initialize refcount</span> + put<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> Current_routine<span class="Delimiter">-></span>alloc++<span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span> + <span class="Comment">// store length</span> + put<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> Current_routine<span class="Delimiter">-></span>alloc++<span class="Delimiter">,</span> string_length<span class="Delimiter">);</span> + <span class="Normal">int</span> curr = <span class="Constant">0</span><span class="Delimiter">;</span> + <span class="Normal">const</span> <span class="Normal">char</span>* raw_contents = contents<span class="Delimiter">.</span>c_str<span class="Delimiter">();</span> + <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < string_length<span class="Delimiter">;</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> + <span class="Normal">uint32_t</span> curr_character<span class="Delimiter">;</span> + assert<span class="Delimiter">(</span>curr < SIZE<span class="Delimiter">(</span>contents<span class="Delimiter">));</span> + tb_utf8_char_to_unicode<span class="Delimiter">(</span>&curr_character<span class="Delimiter">,</span> &raw_contents[curr]<span class="Delimiter">);</span> + put<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> Current_routine<span class="Delimiter">-></span>alloc<span class="Delimiter">,</span> curr_character<span class="Delimiter">);</span> + curr += tb_utf8_char_length<span class="Delimiter">(</span>raw_contents[curr]<span class="Delimiter">);</span> + ++Current_routine<span class="Delimiter">-></span>alloc<span class="Delimiter">;</span> + <span class="Delimiter">}</span> + <span class="Comment">// mu strings are not null-terminated in memory</span> + <span class="Identifier">return</span> result<span class="Delimiter">;</span> +<span class="Delimiter">}</span> + +<span class="Comment">//: stash recognizes strings</span> + +<span class="Delimiter">:(scenario stash_string)</span> +def main [ + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span><span class="Normal">new</span> [abc] + stash [foo:]<span class="Delimiter">,</span> <span class="Constant">1</span>:address:array:character +] +<span class="traceContains">+app: foo: abc</span> + +<span class="Delimiter">:(before "End print Special-cases(r, data)")</span> +<span class="Normal">if</span> <span class="Delimiter">(</span>is_mu_string<span class="Delimiter">(</span>r<span class="Delimiter">))</span> <span class="Delimiter">{</span> + assert<span class="Delimiter">(</span>scalar<span class="Delimiter">(</span>data<span class="Delimiter">));</span> + <span class="Identifier">return</span> read_mu_string<span class="Delimiter">(</span>data<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span>+<span class="Constant">' '</span><span class="Delimiter">;</span> +<span class="Delimiter">}</span> + +<span class="Delimiter">:(scenario unicode_string)</span> +def main [ + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span><span class="Normal">new</span> [♠] + stash [foo:]<span class="Delimiter">,</span> <span class="Constant">1</span>:address:array:character +] +<span class="traceContains">+app: foo: ♠</span> + +<span class="Delimiter">:(scenario stash_space_after_string)</span> +def main [ + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span><span class="Normal">new</span> [abc] + stash <span class="Constant">1</span>:address:array:character<span class="Delimiter">,</span> [foo] +] +<span class="traceContains">+app: abc foo</span> + +<span class="Comment">//: Allocate more to routine when initializing a literal string</span> +<span class="Delimiter">:(scenario new_string_overflow)</span> +<span class="Special">% Initial_memory_per_routine = 2;</span> +def main [ + <span class="Constant">1</span>:address:number/<span class="Special">raw <- </span><span class="Normal">new</span> number:type + <span class="Constant">2</span>:address:array:character/<span class="Special">raw <- </span><span class="Normal">new</span> [a] <span class="Comment"># not enough room in initial page, if you take the array size into account</span> +] +<span class="traceContains">+new: routine allocated memory from 1000 to 1002</span> +<span class="traceContains">+new: routine allocated memory from 1002 to 1004</span> + +<span class="Comment">//: helpers</span> +<span class="Delimiter">:(code)</span> +<span class="Normal">int</span> unicode_length<span class="Delimiter">(</span><span class="Normal">const</span> string& s<span class="Delimiter">)</span> <span class="Delimiter">{</span> + <span class="Normal">const</span> <span class="Normal">char</span>* in = s<span class="Delimiter">.</span>c_str<span class="Delimiter">();</span> + <span class="Normal">int</span> result = <span class="Constant">0</span><span class="Delimiter">;</span> + <span class="Normal">int</span> curr = <span class="Constant">0</span><span class="Delimiter">;</span> + <span class="Normal">while</span> <span class="Delimiter">(</span>curr < SIZE<span class="Delimiter">(</span>s<span class="Delimiter">))</span> <span class="Delimiter">{</span> <span class="Comment">// carefully bounds-check on the string</span> + <span class="Comment">// before accessing its raw pointer</span> + ++result<span class="Delimiter">;</span> + curr += tb_utf8_char_length<span class="Delimiter">(</span>in[curr]<span class="Delimiter">);</span> + <span class="Delimiter">}</span> + <span class="Identifier">return</span> result<span class="Delimiter">;</span> +<span class="Delimiter">}</span> + +string read_mu_string<span class="Delimiter">(</span><span class="Normal">int</span> address<span class="Delimiter">)</span> <span class="Delimiter">{</span> + <span class="Normal">if</span> <span class="Delimiter">(</span>address == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">""</span><span class="Delimiter">;</span> + address++<span class="Delimiter">;</span> <span class="Comment">// skip refcount</span> + <span class="Normal">int</span> size = get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> address<span class="Delimiter">);</span> + <span class="Normal">if</span> <span class="Delimiter">(</span>size == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">""</span><span class="Delimiter">;</span> + ostringstream tmp<span class="Delimiter">;</span> + <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> curr = address+<span class="Constant">1</span><span class="Delimiter">;</span> curr <= address+size<span class="Delimiter">;</span> ++curr<span class="Delimiter">)</span> <span class="Delimiter">{</span> + tmp << to_unicode<span class="Delimiter">(</span><span class="Normal">static_cast</span><<span class="Normal">uint32_t</span>><span class="Delimiter">(</span>get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> curr<span class="Delimiter">)));</span> + <span class="Delimiter">}</span> + <span class="Identifier">return</span> tmp<span class="Delimiter">.</span>str<span class="Delimiter">();</span> +<span class="Delimiter">}</span> +</pre> +</body> +</html> +<!-- vim: set foldmethod=manual : --> |