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diff --git a/html/013literal_string.cc.html b/html/013literal_string.cc.html deleted file mode 100644 index 56fff30c..00000000 --- a/html/013literal_string.cc.html +++ /dev/null @@ -1,234 +0,0 @@ -<!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 - 013literal_string.cc</title> -<meta name="Generator" content="Vim/7.4"> -<meta name="plugin-version" content="vim7.4_v1"> -<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-family: monospace; color: #eeeeee; background-color: #080808; } -* { font-size: 1.05em; } -.cSpecial { color: #008000; } -.Comment { color: #9090ff; } -.Delimiter { color: #a04060; } -.Special { color: #ff6060; } -.Identifier { color: #804000; } -.Constant { color: #00a0a0; } -.traceContains { color: #008000; } ---> -</style> - -<script type='text/javascript'> -<!-- - ---> -</script> -</head> -<body> -<pre id='vimCodeElement'> -<span class="Comment">//: For convenience, some instructions will take literal arrays of characters (strings).</span> -<span class="Comment">//:</span> -<span class="Comment">//: Instead of quotes, we'll use [] to delimit strings. That'll reduce the</span> -<span class="Comment">//: need for escaping since we can support nested brackets. And we can also</span> -<span class="Comment">//: imagine that 'recipe' might one day itself be defined in mu, doing its own</span> -<span class="Comment">//: parsing.</span> - -<span class="Delimiter">:(scenarios load)</span> -<span class="Delimiter">:(scenario string_literal)</span> -recipe main [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>copy [abc def] <span class="Comment"># copy can't really take a string</span> -] -<span class="traceContains">+parse: ingredient: {name: "abc def", properties: [_: "literal-string"]}</span> - -<span class="Delimiter">:(scenario string_literal_with_colons)</span> -recipe main [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>copy [abc:def/ghi] -] -<span class="traceContains">+parse: ingredient: {name: "abc:def/ghi", properties: [_: "literal-string"]}</span> - -<span class="Delimiter">:(before "End Mu Types Initialization")</span> -Type_ordinal[<span class="Constant">"literal-string"</span>] = <span class="Constant">0</span><span class="Delimiter">;</span> - -<span class="Delimiter">:(after "string next_word(istream& in)")</span> - if <span class="Delimiter">(</span>in<span class="Delimiter">.</span>peek<span class="Delimiter">()</span> == <span class="Constant">'['</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> - string result = slurp_quoted<span class="Delimiter">(</span>in<span class="Delimiter">);</span> - skip_whitespace<span class="Delimiter">(</span>in<span class="Delimiter">);</span> - skip_comment<span class="Delimiter">(</span>in<span class="Delimiter">);</span> - <span class="Identifier">return</span> result<span class="Delimiter">;</span> - <span class="Delimiter">}</span> - -<span class="Delimiter">:(code)</span> -string slurp_quoted<span class="Delimiter">(</span>istream& in<span class="Delimiter">)</span> <span class="Delimiter">{</span> - ostringstream out<span class="Delimiter">;</span> - assert<span class="Delimiter">(</span>!in<span class="Delimiter">.</span>eof<span class="Delimiter">());</span> assert<span class="Delimiter">(</span>in<span class="Delimiter">.</span>peek<span class="Delimiter">()</span> == <span class="Constant">'['</span><span class="Delimiter">);</span> out << static_cast<char><span class="Delimiter">(</span>in<span class="Delimiter">.</span>get<span class="Delimiter">());</span> <span class="Comment">// slurp the '['</span> - if <span class="Delimiter">(</span>code_string<span class="Delimiter">(</span>in<span class="Delimiter">,</span> out<span class="Delimiter">))</span> - slurp_quoted_comment_aware<span class="Delimiter">(</span>in<span class="Delimiter">,</span> out<span class="Delimiter">);</span> - else - slurp_quoted_comment_oblivious<span class="Delimiter">(</span>in<span class="Delimiter">,</span> out<span class="Delimiter">);</span> - <span class="Identifier">return</span> out<span class="Delimiter">.</span>str<span class="Delimiter">();</span> -<span class="Delimiter">}</span> - -<span class="Comment">// A string is a code string if it contains a newline before any non-whitespace</span> -<span class="Comment">// todo: support comments before the newline. But that gets messy.</span> -bool code_string<span class="Delimiter">(</span>istream& in<span class="Delimiter">,</span> ostringstream& out<span class="Delimiter">)</span> <span class="Delimiter">{</span> - while <span class="Delimiter">(</span>!in<span class="Delimiter">.</span>eof<span class="Delimiter">())</span> <span class="Delimiter">{</span> - char c = in<span class="Delimiter">.</span>get<span class="Delimiter">();</span> - if <span class="Delimiter">(</span>!isspace<span class="Delimiter">(</span>c<span class="Delimiter">))</span> <span class="Delimiter">{</span> - in<span class="Delimiter">.</span>putback<span class="Delimiter">(</span>c<span class="Delimiter">);</span> - <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - out << c<span class="Delimiter">;</span> - if <span class="Delimiter">(</span>c == <span class="cSpecial">'\n'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> - <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - <span class="Delimiter">}</span> - <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span> -<span class="Delimiter">}</span> - -<span class="Comment">// Read a regular string. Regular strings can only contain other regular</span> -<span class="Comment">// strings.</span> -void slurp_quoted_comment_oblivious<span class="Delimiter">(</span>istream& in<span class="Delimiter">,</span> ostringstream& out<span class="Delimiter">)</span> <span class="Delimiter">{</span> - int brace_depth = <span class="Constant">1</span><span class="Delimiter">;</span> - while <span class="Delimiter">(</span>!in<span class="Delimiter">.</span>eof<span class="Delimiter">())</span> <span class="Delimiter">{</span> - char c = in<span class="Delimiter">.</span>get<span class="Delimiter">();</span> - if <span class="Delimiter">(</span>c == <span class="cSpecial">'\\'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> - out << static_cast<char><span class="Delimiter">(</span>in<span class="Delimiter">.</span>get<span class="Delimiter">());</span> - <span class="Identifier">continue</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - out << c<span class="Delimiter">;</span> - if <span class="Delimiter">(</span>c == <span class="Constant">'['</span><span class="Delimiter">)</span> ++brace_depth<span class="Delimiter">;</span> - if <span class="Delimiter">(</span>c == <span class="Constant">']'</span><span class="Delimiter">)</span> --brace_depth<span class="Delimiter">;</span> - if <span class="Delimiter">(</span>brace_depth == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Identifier">break</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - if <span class="Delimiter">(</span>in<span class="Delimiter">.</span>eof<span class="Delimiter">()</span> && brace_depth > <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> - raise << <span class="Constant">"unbalanced '['</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span> - out<span class="Delimiter">.</span>clear<span class="Delimiter">();</span> - <span class="Delimiter">}</span> -<span class="Delimiter">}</span> - -<span class="Comment">// Read a code string. Code strings can contain either code or regular strings.</span> -void slurp_quoted_comment_aware<span class="Delimiter">(</span>istream& in<span class="Delimiter">,</span> ostringstream& out<span class="Delimiter">)</span> <span class="Delimiter">{</span> - char c<span class="Delimiter">;</span> - while <span class="Delimiter">(</span>in >> c<span class="Delimiter">)</span> <span class="Delimiter">{</span> - if <span class="Delimiter">(</span>c == <span class="cSpecial">'\\'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> - out << static_cast<char><span class="Delimiter">(</span>in<span class="Delimiter">.</span>get<span class="Delimiter">());</span> - <span class="Identifier">continue</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - if <span class="Delimiter">(</span>c == <span class="Constant">'#'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> - out << c<span class="Delimiter">;</span> - while <span class="Delimiter">(</span>!in<span class="Delimiter">.</span>eof<span class="Delimiter">()</span> && in<span class="Delimiter">.</span>peek<span class="Delimiter">()</span> != <span class="cSpecial">'\n'</span><span class="Delimiter">)</span> out << static_cast<char><span class="Delimiter">(</span>in<span class="Delimiter">.</span>get<span class="Delimiter">());</span> - <span class="Identifier">continue</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - if <span class="Delimiter">(</span>c == <span class="Constant">'['</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> - in<span class="Delimiter">.</span>putback<span class="Delimiter">(</span>c<span class="Delimiter">);</span> - <span class="Comment">// recurse</span> - out << slurp_quoted<span class="Delimiter">(</span>in<span class="Delimiter">);</span> - <span class="Identifier">continue</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - out << c<span class="Delimiter">;</span> - if <span class="Delimiter">(</span>c == <span class="Constant">']'</span><span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - raise << <span class="Constant">"unbalanced '['</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span> - out<span class="Delimiter">.</span>clear<span class="Delimiter">();</span> -<span class="Delimiter">}</span> - -<span class="Delimiter">:(after "Parsing reagent(string s)")</span> -if <span class="Delimiter">(</span>s<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> - assert<span class="Delimiter">(</span>*s<span class="Delimiter">.</span>rbegin<span class="Delimiter">()</span> == <span class="Constant">']'</span><span class="Delimiter">);</span> - <span class="Comment">// delete [] delimiters</span> - s<span class="Delimiter">.</span>erase<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">,</span> <span class="Constant">1</span><span class="Delimiter">);</span> - s<span class="Delimiter">.</span>erase<span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>s<span class="Delimiter">)</span>-<span class="Constant">1</span><span class="Delimiter">);</span> - name = s<span class="Delimiter">;</span> - types<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span> - properties<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>pair<string<span class="Delimiter">,</span> vector<string> ><span class="Delimiter">(</span>name<span class="Delimiter">,</span> vector<string><span class="Delimiter">()));</span> - properties<span class="Delimiter">.</span>back<span class="Delimiter">().</span>second<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><span class="Constant">"literal-string"</span><span class="Delimiter">);</span> - <span class="Identifier">return</span><span class="Delimiter">;</span> -<span class="Delimiter">}</span> - -<span class="Comment">//: Two tweaks to printing literal strings compared to other reagents:</span> -<span class="Comment">//: a) Don't print the string twice in the representation, just put '_' in</span> -<span class="Comment">//: the property list.</span> -<span class="Comment">//: b) Escape newlines in the string to make it more friendly to trace().</span> - -<span class="Delimiter">:(after "string reagent::to_string()")</span> - if <span class="Delimiter">(</span>is_literal_string<span class="Delimiter">(</span>*this<span class="Delimiter">))</span> - <span class="Identifier">return</span> emit_literal_string<span class="Delimiter">(</span>name<span class="Delimiter">);</span> - -<span class="Delimiter">:(code)</span> -bool is_literal_string<span class="Delimiter">(</span>const reagent& x<span class="Delimiter">)</span> <span class="Delimiter">{</span> - <span class="Identifier">return</span> !x<span class="Delimiter">.</span>properties<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>second<span class="Delimiter">.</span>empty<span class="Delimiter">()</span> && x<span class="Delimiter">.</span>properties<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>second<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> == <span class="Constant">"literal-string"</span><span class="Delimiter">;</span> -<span class="Delimiter">}</span> - -string emit_literal_string<span class="Delimiter">(</span>string name<span class="Delimiter">)</span> <span class="Delimiter">{</span> - size_t pos = <span class="Constant">0</span><span class="Delimiter">;</span> - while <span class="Delimiter">(</span>pos != string::npos<span class="Delimiter">)</span> - pos = replace<span class="Delimiter">(</span>name<span class="Delimiter">,</span> <span class="Constant">"</span><span class="cSpecial">\n</span><span class="Constant">"</span><span class="Delimiter">,</span> <span class="Constant">"</span><span class="cSpecial">\\</span><span class="Constant">n"</span><span class="Delimiter">,</span> pos<span class="Delimiter">);</span> - <span class="Identifier">return</span> <span class="Constant">"{name: </span><span class="cSpecial">\"</span><span class="Constant">"</span>+name+<span class="Constant">"</span><span class="cSpecial">\"</span><span class="Constant">, properties: [_: </span><span class="cSpecial">\"</span><span class="Constant">literal-string</span><span class="cSpecial">\"</span><span class="Constant">]}"</span><span class="Delimiter">;</span> -<span class="Delimiter">}</span> - -size_t replace<span class="Delimiter">(</span>string& str<span class="Delimiter">,</span> const string& from<span class="Delimiter">,</span> const string& to<span class="Delimiter">,</span> size_t n<span class="Delimiter">)</span> <span class="Delimiter">{</span> - size_t result = str<span class="Delimiter">.</span>find<span class="Delimiter">(</span>from<span class="Delimiter">,</span> n<span class="Delimiter">);</span> - if <span class="Delimiter">(</span>result != string::npos<span class="Delimiter">)</span> - str<span class="Delimiter">.</span>replace<span class="Delimiter">(</span>result<span class="Delimiter">,</span> from<span class="Delimiter">.</span>length<span class="Delimiter">(),</span> to<span class="Delimiter">);</span> - <span class="Identifier">return</span> result<span class="Delimiter">;</span> -<span class="Delimiter">}</span> - -<span class="Delimiter">:(scenario string_literal_nested)</span> -recipe main [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>copy [abc [def]] -] -<span class="traceContains">+parse: ingredient: {name: "abc [def]", properties: [_: "literal-string"]}</span> - -<span class="Delimiter">:(scenario string_literal_escaped)</span> -recipe main [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>copy [abc \[def] -] -<span class="traceContains">+parse: ingredient: {name: "abc [def", properties: [_: "literal-string"]}</span> - -<span class="Delimiter">:(scenario string_literal_escaped_comment_aware)</span> -recipe main [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>copy [ -abc \\\[def] -] -<span class="traceContains">+parse: ingredient: {name: "\nabc \[def", properties: [_: "literal-string"]}</span> - -<span class="Delimiter">:(scenario string_literal_and_comment)</span> -recipe main [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>copy [abc] <span class="Comment"># comment</span> -] -<span class="traceContains">+parse: instruction: copy</span> -<span class="traceContains">+parse: ingredient: {name: "abc", properties: [_: "literal-string"]}</span> -<span class="traceContains">+parse: product: {name: "1", properties: ["1": "address":"array":"character"]}</span> -<span class="Comment"># no other ingredients</span> -$parse: <span class="Constant">3</span> - -<span class="Delimiter">:(scenario string_literal_escapes_newlines_in_trace)</span> -recipe main [ - copy [abc -def] -] -<span class="traceContains">+parse: ingredient: {name: "abc\ndef", properties: [_: "literal-string"]}</span> - -<span class="Delimiter">:(scenario string_literal_can_skip_past_comments)</span> -recipe main [ - copy [ - <span class="Comment"># ']' inside comment</span> - bar - ] -] -<span class="traceContains">+parse: ingredient: {name: "\n # ']' inside comment\n bar\n ", properties: [_: "literal-string"]}</span> - -<span class="Delimiter">:(scenario string_literal_empty)</span> -recipe main [ - copy [] -] -<span class="traceContains">+parse: ingredient: {name: "", properties: [_: "literal-string"]}</span> -</pre> -</body> -</html> -<!-- vim: set foldmethod=manual : --> |