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Diffstat (limited to 'html/015literal_noninteger.cc.html')
| -rw-r--r-- | html/015literal_noninteger.cc.html | 94 |
1 files changed, 47 insertions, 47 deletions
diff --git a/html/015literal_noninteger.cc.html b/html/015literal_noninteger.cc.html index 46223993..4dde2095 100644 --- a/html/015literal_noninteger.cc.html +++ b/html/015literal_noninteger.cc.html @@ -57,53 +57,53 @@ if ('onhashchange' in window) { </head> <body onload='JumpToLine();'> <pre id='vimCodeElement'> -<a name="L1"></a><span id="L1" class="LineNr"> 1 </span><span class="Comment">//: Support literal non-integers.</span> -<a name="L2"></a><span id="L2" class="LineNr"> 2 </span> -<a name="L3"></a><span id="L3" class="LineNr"> 3 </span><span class="Delimiter">:(scenarios load)</span> -<a name="L4"></a><span id="L4" class="LineNr"> 4 </span><span class="Delimiter">:(scenario noninteger_literal)</span> -<a name="L5"></a><span id="L5" class="LineNr"> 5 </span><span class="muRecipe">def</span> main [ -<a name="L6"></a><span id="L6" class="LineNr"> 6 </span> <span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">3.14159</span> -<a name="L7"></a><span id="L7" class="LineNr"> 7 </span>] -<a name="L8"></a><span id="L8" class="LineNr"> 8 </span><span class="traceContains">+parse: ingredient: {3.14159: "literal-fractional-number"}</span> -<a name="L9"></a><span id="L9" class="LineNr"> 9 </span> -<a name="L10"></a><span id="L10" class="LineNr">10 </span><span class="Delimiter">:(after "Parsing reagent(string s)")</span> -<a name="L11"></a><span id="L11" class="LineNr">11 </span><span class="Normal">if</span> <span class="Delimiter">(</span>is_noninteger<span class="Delimiter">(</span>s<span class="Delimiter">))</span> <span class="Delimiter">{</span> -<a name="L12"></a><span id="L12" class="LineNr">12 </span> name = s<span class="Delimiter">;</span> -<a name="L13"></a><span id="L13" class="LineNr">13 </span> type = <span class="Normal">new</span> type_tree<span class="Delimiter">(</span><span class="Constant">"literal-fractional-number"</span><span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span> -<a name="L14"></a><span id="L14" class="LineNr">14 </span> set_value<span class="Delimiter">(</span>to_double<span class="Delimiter">(</span>s<span class="Delimiter">));</span> -<a name="L15"></a><span id="L15" class="LineNr">15 </span> <span class="Identifier">return</span><span class="Delimiter">;</span> -<a name="L16"></a><span id="L16" class="LineNr">16 </span><span class="Delimiter">}</span> -<a name="L17"></a><span id="L17" class="LineNr">17 </span> -<a name="L18"></a><span id="L18" class="LineNr">18 </span><span class="Delimiter">:(code)</span> -<a name="L19"></a><span id="L19" class="LineNr">19 </span><span class="Normal">bool</span> is_noninteger<span class="Delimiter">(</span><span class="Normal">const</span> string& s<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<a name="L20"></a><span id="L20" class="LineNr">20 </span> <span class="Identifier">return</span> s<span class="Delimiter">.</span>find_first_not_of<span class="Delimiter">(</span><span class="Constant">"0123456789-."</span><span class="Delimiter">)</span> == string::npos <span class="Comment">// no other characters</span> -<a name="L21"></a><span id="L21" class="LineNr">21 </span> && s<span class="Delimiter">.</span>find_first_of<span class="Delimiter">(</span><span class="Constant">"0123456789"</span><span class="Delimiter">)</span> != string::npos <span class="Comment">// at least one digit</span> -<a name="L22"></a><span id="L22" class="LineNr">22 </span> && s<span class="Delimiter">.</span>find<span class="Delimiter">(</span><span class="Constant">'-'</span><span class="Delimiter">,</span> <span class="Constant">1</span><span class="Delimiter">)</span> == string::npos <span class="Comment">// '-' only at first position</span> -<a name="L23"></a><span id="L23" class="LineNr">23 </span> && std::count<span class="Delimiter">(</span>s<span class="Delimiter">.</span>begin<span class="Delimiter">(),</span> s<span class="Delimiter">.</span>end<span class="Delimiter">(),</span> <span class="Constant">'.'</span><span class="Delimiter">)</span> == <span class="Constant">1</span><span class="Delimiter">;</span> <span class="Comment">// exactly one decimal point</span> -<a name="L24"></a><span id="L24" class="LineNr">24 </span><span class="Delimiter">}</span> -<a name="L25"></a><span id="L25" class="LineNr">25 </span> -<a name="L26"></a><span id="L26" class="LineNr">26 </span><span class="Normal">double</span> to_double<span class="Delimiter">(</span>string n<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<a name="L27"></a><span id="L27" class="LineNr">27 </span> <span class="Normal">char</span>* end = <span class="Constant">NULL</span><span class="Delimiter">;</span> -<a name="L28"></a><span id="L28" class="LineNr">28 </span> <span class="Comment">// safe because string.c_str() is guaranteed to be null-terminated</span> -<a name="L29"></a><span id="L29" class="LineNr">29 </span> <span class="Normal">double</span> result = strtod<span class="Delimiter">(</span>n<span class="Delimiter">.</span>c_str<span class="Delimiter">(),</span> &end<span class="Delimiter">);</span> -<a name="L30"></a><span id="L30" class="LineNr">30 </span> assert<span class="Delimiter">(</span>*end == <span class="cSpecial">'\0'</span><span class="Delimiter">);</span> -<a name="L31"></a><span id="L31" class="LineNr">31 </span> <span class="Identifier">return</span> result<span class="Delimiter">;</span> -<a name="L32"></a><span id="L32" class="LineNr">32 </span><span class="Delimiter">}</span> -<a name="L33"></a><span id="L33" class="LineNr">33 </span> -<a name="L34"></a><span id="L34" class="LineNr">34 </span><span class="Normal">void</span> test_is_noninteger<span class="Delimiter">()</span> <span class="Delimiter">{</span> -<a name="L35"></a><span id="L35" class="LineNr">35 </span> CHECK<span class="Delimiter">(</span>!is_noninteger<span class="Delimiter">(</span><span class="Constant">"1234"</span><span class="Delimiter">));</span> -<a name="L36"></a><span id="L36" class="LineNr">36 </span> CHECK<span class="Delimiter">(</span>!is_noninteger<span class="Delimiter">(</span><span class="Constant">"1a2"</span><span class="Delimiter">));</span> -<a name="L37"></a><span id="L37" class="LineNr">37 </span> CHECK<span class="Delimiter">(</span>is_noninteger<span class="Delimiter">(</span><span class="Constant">"234.0"</span><span class="Delimiter">));</span> -<a name="L38"></a><span id="L38" class="LineNr">38 </span> CHECK<span class="Delimiter">(</span>!is_noninteger<span class="Delimiter">(</span><span class="Constant">"..."</span><span class="Delimiter">));</span> -<a name="L39"></a><span id="L39" class="LineNr">39 </span> CHECK<span class="Delimiter">(</span>!is_noninteger<span class="Delimiter">(</span><span class="Constant">"."</span><span class="Delimiter">));</span> -<a name="L40"></a><span id="L40" class="LineNr">40 </span> CHECK<span class="Delimiter">(</span>is_noninteger<span class="Delimiter">(</span><span class="Constant">"2."</span><span class="Delimiter">));</span> -<a name="L41"></a><span id="L41" class="LineNr">41 </span> CHECK<span class="Delimiter">(</span>is_noninteger<span class="Delimiter">(</span><span class="Constant">".2"</span><span class="Delimiter">));</span> -<a name="L42"></a><span id="L42" class="LineNr">42 </span> CHECK<span class="Delimiter">(</span>is_noninteger<span class="Delimiter">(</span><span class="Constant">"-.2"</span><span class="Delimiter">));</span> -<a name="L43"></a><span id="L43" class="LineNr">43 </span> CHECK<span class="Delimiter">(</span>is_noninteger<span class="Delimiter">(</span><span class="Constant">"-2."</span><span class="Delimiter">));</span> -<a name="L44"></a><span id="L44" class="LineNr">44 </span> CHECK<span class="Delimiter">(</span>!is_noninteger<span class="Delimiter">(</span><span class="Constant">"--.2"</span><span class="Delimiter">));</span> -<a name="L45"></a><span id="L45" class="LineNr">45 </span> CHECK<span class="Delimiter">(</span>!is_noninteger<span class="Delimiter">(</span><span class="Constant">".-2"</span><span class="Delimiter">));</span> -<a name="L46"></a><span id="L46" class="LineNr">46 </span> CHECK<span class="Delimiter">(</span>!is_noninteger<span class="Delimiter">(</span><span class="Constant">"..2"</span><span class="Delimiter">));</span> -<a name="L47"></a><span id="L47" class="LineNr">47 </span><span class="Delimiter">}</span> +<span id="L1" class="LineNr"> 1 </span><span class="Comment">//: Support literal non-integers.</span> +<span id="L2" class="LineNr"> 2 </span> +<span id="L3" class="LineNr"> 3 </span><span class="Delimiter">:(scenarios load)</span> +<span id="L4" class="LineNr"> 4 </span><span class="Delimiter">:(scenario noninteger_literal)</span> +<span id="L5" class="LineNr"> 5 </span><span class="muRecipe">def</span> main [ +<span id="L6" class="LineNr"> 6 </span> <span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">3.14159</span> +<span id="L7" class="LineNr"> 7 </span>] +<span id="L8" class="LineNr"> 8 </span><span class="traceContains">+parse: ingredient: {3.14159: "literal-fractional-number"}</span> +<span id="L9" class="LineNr"> 9 </span> +<span id="L10" class="LineNr">10 </span><span class="Delimiter">:(after "Parsing reagent(string s)")</span> +<span id="L11" class="LineNr">11 </span><span class="Normal">if</span> <span class="Delimiter">(</span>is_noninteger<span class="Delimiter">(</span>s<span class="Delimiter">))</span> <span class="Delimiter">{</span> +<span id="L12" class="LineNr">12 </span> name = s<span class="Delimiter">;</span> +<span id="L13" class="LineNr">13 </span> type = <span class="Normal">new</span> type_tree<span class="Delimiter">(</span><span class="Constant">"literal-fractional-number"</span><span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span> +<span id="L14" class="LineNr">14 </span> set_value<span class="Delimiter">(</span>to_double<span class="Delimiter">(</span>s<span class="Delimiter">));</span> +<span id="L15" class="LineNr">15 </span> <span class="Identifier">return</span><span class="Delimiter">;</span> +<span id="L16" class="LineNr">16 </span><span class="Delimiter">}</span> +<span id="L17" class="LineNr">17 </span> +<span id="L18" class="LineNr">18 </span><span class="Delimiter">:(code)</span> +<span id="L19" class="LineNr">19 </span><span class="Normal">bool</span> is_noninteger<span class="Delimiter">(</span><span class="Normal">const</span> string& s<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L20" class="LineNr">20 </span> <span class="Identifier">return</span> s<span class="Delimiter">.</span>find_first_not_of<span class="Delimiter">(</span><span class="Constant">"0123456789-."</span><span class="Delimiter">)</span> == string::npos <span class="Comment">// no other characters</span> +<span id="L21" class="LineNr">21 </span> && s<span class="Delimiter">.</span>find_first_of<span class="Delimiter">(</span><span class="Constant">"0123456789"</span><span class="Delimiter">)</span> != string::npos <span class="Comment">// at least one digit</span> +<span id="L22" class="LineNr">22 </span> && s<span class="Delimiter">.</span>find<span class="Delimiter">(</span><span class="Constant">'-'</span><span class="Delimiter">,</span> <span class="Constant">1</span><span class="Delimiter">)</span> == string::npos <span class="Comment">// '-' only at first position</span> +<span id="L23" class="LineNr">23 </span> && std::count<span class="Delimiter">(</span>s<span class="Delimiter">.</span>begin<span class="Delimiter">(),</span> s<span class="Delimiter">.</span>end<span class="Delimiter">(),</span> <span class="Constant">'.'</span><span class="Delimiter">)</span> == <span class="Constant">1</span><span class="Delimiter">;</span> <span class="Comment">// exactly one decimal point</span> +<span id="L24" class="LineNr">24 </span><span class="Delimiter">}</span> +<span id="L25" class="LineNr">25 </span> +<span id="L26" class="LineNr">26 </span><span class="Normal">double</span> to_double<span class="Delimiter">(</span>string n<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L27" class="LineNr">27 </span> <span class="Normal">char</span>* end = <span class="Constant">NULL</span><span class="Delimiter">;</span> +<span id="L28" class="LineNr">28 </span> <span class="Comment">// safe because string.c_str() is guaranteed to be null-terminated</span> +<span id="L29" class="LineNr">29 </span> <span class="Normal">double</span> result = strtod<span class="Delimiter">(</span>n<span class="Delimiter">.</span>c_str<span class="Delimiter">(),</span> &end<span class="Delimiter">);</span> +<span id="L30" class="LineNr">30 </span> assert<span class="Delimiter">(</span>*end == <span class="cSpecial">'\0'</span><span class="Delimiter">);</span> +<span id="L31" class="LineNr">31 </span> <span class="Identifier">return</span> result<span class="Delimiter">;</span> +<span id="L32" class="LineNr">32 </span><span class="Delimiter">}</span> +<span id="L33" class="LineNr">33 </span> +<span id="L34" class="LineNr">34 </span><span class="Normal">void</span> test_is_noninteger<span class="Delimiter">()</span> <span class="Delimiter">{</span> +<span id="L35" class="LineNr">35 </span> CHECK<span class="Delimiter">(</span>!is_noninteger<span class="Delimiter">(</span><span class="Constant">"1234"</span><span class="Delimiter">));</span> +<span id="L36" class="LineNr">36 </span> CHECK<span class="Delimiter">(</span>!is_noninteger<span class="Delimiter">(</span><span class="Constant">"1a2"</span><span class="Delimiter">));</span> +<span id="L37" class="LineNr">37 </span> CHECK<span class="Delimiter">(</span>is_noninteger<span class="Delimiter">(</span><span class="Constant">"234.0"</span><span class="Delimiter">));</span> +<span id="L38" class="LineNr">38 </span> CHECK<span class="Delimiter">(</span>!is_noninteger<span class="Delimiter">(</span><span class="Constant">"..."</span><span class="Delimiter">));</span> +<span id="L39" class="LineNr">39 </span> CHECK<span class="Delimiter">(</span>!is_noninteger<span class="Delimiter">(</span><span class="Constant">"."</span><span class="Delimiter">));</span> +<span id="L40" class="LineNr">40 </span> CHECK<span class="Delimiter">(</span>is_noninteger<span class="Delimiter">(</span><span class="Constant">"2."</span><span class="Delimiter">));</span> +<span id="L41" class="LineNr">41 </span> CHECK<span class="Delimiter">(</span>is_noninteger<span class="Delimiter">(</span><span class="Constant">".2"</span><span class="Delimiter">));</span> +<span id="L42" class="LineNr">42 </span> CHECK<span class="Delimiter">(</span>is_noninteger<span class="Delimiter">(</span><span class="Constant">"-.2"</span><span class="Delimiter">));</span> +<span id="L43" class="LineNr">43 </span> CHECK<span class="Delimiter">(</span>is_noninteger<span class="Delimiter">(</span><span class="Constant">"-2."</span><span class="Delimiter">));</span> +<span id="L44" class="LineNr">44 </span> CHECK<span class="Delimiter">(</span>!is_noninteger<span class="Delimiter">(</span><span class="Constant">"--.2"</span><span class="Delimiter">));</span> +<span id="L45" class="LineNr">45 </span> CHECK<span class="Delimiter">(</span>!is_noninteger<span class="Delimiter">(</span><span class="Constant">".-2"</span><span class="Delimiter">));</span> +<span id="L46" class="LineNr">46 </span> CHECK<span class="Delimiter">(</span>!is_noninteger<span class="Delimiter">(</span><span class="Constant">"..2"</span><span class="Delimiter">));</span> +<span id="L47" class="LineNr">47 </span><span class="Delimiter">}</span> </pre> </body> </html> |