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<pre id='vimCodeElement'>
<span class="Comment">//: Everything this project/binary supports.</span>
<span class="Comment">//: This should give you a sense for what to look forward to in later layers.</span>
<span class="Delimiter">:(before "End Commandline Parsing")</span>
if <span class="Delimiter">(</span>argc <= <span class="Constant">1</span> || is_equal<span class="Delimiter">(</span>argv[<span class="Constant">1</span>]<span class="Delimiter">,</span> <span class="Constant">"--help"</span><span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span class="Comment">// this is the functionality later layers will provide</span>
<span class="Comment">// currently no automated tests for commandline arg parsing</span>
cerr << <span class="Constant">"To load files and run 'main':</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<< <span class="Constant">" mu file1.mu file2.mu ...</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<< <span class="Constant">"To run all tests:</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<< <span class="Constant">" mu test</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<< <span class="Constant">"To load files and then run all tests:</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<< <span class="Constant">" mu test file1.mu file2.mu ...</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span class="Delimiter">;</span>
<span class="Identifier">return</span> <span class="Constant">0</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="SalientComment">//:: Helper function used by the above fragment of code (and later layers too,</span>
<span class="SalientComment">//:: who knows?).</span>
<span class="Comment">//: The :(code) directive appends function definitions to the end of the</span>
<span class="Comment">//: project. Regardless of where functions are defined, we can call them</span>
<span class="Comment">//: anywhere we like as long as we format the function header in a specific</span>
<span class="Comment">//: way: put it all on a single line without indent, end the line with ') {'</span>
<span class="Comment">//: and no trailing whitespace. As long as functions uniformly start this</span>
<span class="Comment">//: way, our makefile contains a little command to automatically generate</span>
<span class="Comment">//: declarations for them.</span>
<span class="Delimiter">:(code)</span>
bool is_equal<span class="Delimiter">(</span>char* s<span class="Delimiter">,</span> const char* lit<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Identifier">return</span> strncmp<span class="Delimiter">(</span>s<span class="Delimiter">,</span> lit<span class="Delimiter">,</span> strlen<span class="Delimiter">(</span>lit<span class="Delimiter">))</span> == <span class="Constant">0</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(before "End Includes")</span>
<span class="PreProc">#include</span><span class="Constant"><assert.h></span>
<span class="PreProc">#include</span><span class="Constant"><iostream></span>
using std::istream<span class="Delimiter">;</span>
using std::ostream<span class="Delimiter">;</span>
using std::iostream<span class="Delimiter">;</span>
using std::cin<span class="Delimiter">;</span>
using std::cout<span class="Delimiter">;</span>
using std::cerr<span class="Delimiter">;</span>
<span class="PreProc">#include</span><span class="Constant"><cstring></span>
<span class="PreProc">#include</span><span class="Constant"><string></span>
using std::string<span class="Delimiter">;</span>
typedef size_t index_t<span class="Delimiter">;</span>
const index_t NOT_FOUND = string::npos<span class="Delimiter">;</span>
<span class="Delimiter">:(after "int main(int argc, char* argv[])")</span>
assert<span class="Delimiter">(</span>sizeof<span class="Delimiter">(</span>string::size_type<span class="Delimiter">)</span> == sizeof<span class="Delimiter">(</span>size_t<span class="Delimiter">));</span>
assert<span class="Delimiter">(</span>sizeof<span class="Delimiter">(</span>index_t<span class="Delimiter">)</span> == sizeof<span class="Delimiter">(</span>size_t<span class="Delimiter">));</span>
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