Begin new Template version

template.y

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+// Грамматика Новой Новой Версии шаблонизатора.
+// Конфликтов нет. "=>" предполагается эквивалентным ",".
+// BEGIN, возможно, ещё будет ликвидирован.
+
+%token literal
+%token name
+
+%%
+inst: "<!--" code "-->" | "{" exp "}"
+code: "IF" exp | "ELSE" | elseif exp | "END" | "END" varref |
+    "SET" varref | "SET" varref '=' exp |
+    fn name '(' arglist ')' | fn name '(' arglist ')' '=' exp |
+    for varref '=' exp | for varref |
+    "BEGIN" name bparam | exp
+bparam: |
+    bp1 | bp2 | bp3 |
+    bp1 bp2 | bp2 bp1 | bp1 bp3 | bp3 bp1 | bp2 bp3 | bp3 bp2 |
+    bp1 bp2 bp3 | bp1 bp3 bp2 | bp2 bp1 bp3 | bp2 bp3 bp1 | bp3 bp1 bp2 | bp3 bp2 bp1
+bp1: "AT" exp
+bp2: "BY" exp
+bp3: "TO" exp
+fn: "FUNCTION" | "BLOCK" | "MACRO"
+for: "FOR" | "FOREACH"
+elseif: "ELSE" "IF" | "ELSIF" | "ELSEIF"
+
+exp: p4 | "NOT" exp
+p4: p5 | p5 "||" p4 | p5 "OR" p4 | p5 "XOR" p4
+p5: p6 | p6 "&&" p5 | p6 "AND" p5
+p6: p7 | p7 "==" p7 | p7 "!=" p7
+p7: p8 | p8 '<' p8 | p8 '>' p8 | p8 "<=" p8 | p8 ">=" p8
+p8: p9 | p9 '+' p8 | p9 '-' p8
+p9: p10 | p10 '*' p9 | p10 '/' p9 | p10 '%' p9
+p10: p11 | '-' p11
+p11: nonbrace | '(' exp ')' varpath | '!' p11 | func nonbrace
+nonbrace: '{' hash '}' | literal | varref | func '(' list ')'
+func: name | varref varpart
+list: exp | exp ',' list |
+arglist: name | name ',' arglist |
+hash: pair | pair ',' hash |
+pair: exp ',' exp
+varref: name | varref varpart
+varpart: '.' name | '[' exp ']'
+varpath: | varpath varpart
+%%