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80 lines
No EOL
3.3 KiB
C++
80 lines
No EOL
3.3 KiB
C++
topic "Witz template language";
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[l288;i1120;a17;O9;~~~.1408;2 $$1,0#10431211400427159095818037425705:param]
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[b2503;2 $$8,0#65142375456100023862071332075487:separator]
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[*@(0.0.255)2 $$9,0#83433469410354161042741608181528:base]
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[C2 $$10,0#37138531426314131251341829483380:class]
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[l288;a17;*1 $$11,11#70004532496200323422659154056402:requirement]
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[*@2$(0.128.128)2 $$15,15#34511555403152284025741354420178:NewsDate]
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[l321;b83;a83;*C$7;2 $$17,17#07531550463529505371228428965313:result`-line]
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[l160;*C+117 $$18,5#88603949442205825958800053222425:package`-title]
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[2 $$19,0#53580023442335529039900623488521:gap]
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[C2 $$20,20#70211524482531209251820423858195:class`-nested]
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[b50;2 $$21,21#03324558446220344731010354752573:Par]
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[{_}%EN-US
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[s2; Witz&]
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[s3; 1. Preprocessing&]
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[s0; &]
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[s0; First phase in compilation of witz templates is preprocessing.
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Preprocessing itself can be broken to include phase, when other
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template or template snippets are combined to form single body
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and subblock replacement phase, when all references to subblocks
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are replaced with defined subblocks.&]
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[s0; &]
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[s0; [@5 #include] [/ path]&]
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[s0; &]
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[s0; This attempts to retrieve and include another witz template
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into current body. Witz preprocessor attempts to retrieve language
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specific version of template first, then defaults to common version.&]
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[s0; &]
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[s0; [@5 #define] [/ id]&]
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[s0; &]
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[s0; This starts a new template subblock which ends with another
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subblock. First subblock (the one befure first #define is encountered)
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has [/ id] `"MAIN`". The value of `"MAIN`" subblock represents
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the template at the end of preprocessing process.&]
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[s0; &]
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[s0; [@5 #][/ id]&]
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[s0; &]
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[s0; Occurence of # followed by [/ id] that is neither `"include`"
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or `"define`" inserts a subblock defined by [@5 #define] [/ id].
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Thus process is recursive `- subblock keep replacing until there
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are no more #[/ id] in the block. If [/ id ]is encountered for which
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there is corresponding [@5 #define], it is replaced by empty text.
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If there are more definition for single id, the last one is used.&]
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[s0; &]
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[s0; Example:&]
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[s0; &]
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[s0; [* base.witz:]&]
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[s0; &]
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[s7; <html>&]
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[s7; <title>#TITLE</title>&]
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[s7; <body>#BODY</body>&]
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[s7; </html>&]
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[s7; &]
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[s7; #define TITLE Generic title&]
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[s0; &]
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[s0; [* page.witz:]&]
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[s0;* &]
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[s7; #include base&]
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[s7; #define TITLE The page title&]
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[s7; #define BODY&]
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[s7; <b><i>Hello world!</i></b>&]
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[s0; &]
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[s3; 2. Witz code&]
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[s0; &]
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[s0; Witz code is marked by `'`$`' character (the end of code within
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template is determined by syntax rules, in rare situations you
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might have to enclose expressions in parenthesis).&]
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[s0; &]
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[s0; ]] |