New context-free Template grammar
vitalif
parent
664dbf588b
commit
2117a50a4b
|
|
@ -1,50 +0,0 @@
|
|||
// Подразумевается, что лексический анализатор зависим от работы синтаксического,
|
||||
// знает о его состоянии и соответственно выдаёт либо лексемы "внутри" блоков кода,
|
||||
// либо литералы "вне" оных
|
||||
|
||||
%token literal
|
||||
%token name
|
||||
|
||||
%left ".."
|
||||
%left "||" "OR" "XOR"
|
||||
%left "&&" "AND"
|
||||
%left "&"
|
||||
%nonassoc "==" "!=" "<" ">" "<=" ">="
|
||||
%left "+" "-"
|
||||
%left "*" "/" "%"
|
||||
|
||||
%%
|
||||
chunks: | chunks chunk
|
||||
chunk: error | literal | "<!--" 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 | exp
|
||||
fn: "FUNCTION" | "BLOCK" | "MACRO"
|
||||
for: "FOR" | "FOREACH"
|
||||
elseif: "ELSE" "IF" | "ELSIF" | "ELSEIF"
|
||||
|
||||
exp: exp ".." exp |
|
||||
exp "||" exp | exp "OR" exp | exp "XOR" exp |
|
||||
exp "&&" exp | exp "AND" exp |
|
||||
exp "&" exp |
|
||||
exp "==" exp | exp "!=" exp |
|
||||
exp "<" exp | exp ">" exp | exp "<=" exp | exp ">=" exp |
|
||||
exp "+" exp | exp "-" exp |
|
||||
exp "*" exp | exp "/" exp | exp "%" exp |
|
||||
p10
|
||||
p10: p11 | '-' p11
|
||||
p11: nonbrace | '(' exp ')' varpath | '!' p11 | "NOT" p11
|
||||
nonbrace: '{' hash '}' | literal | varref | func '(' list_or_gthash ')' | func nonbrace
|
||||
list_or_gthash: list | gthash
|
||||
func: name | varref varpart
|
||||
list: exp | exp ',' list
|
||||
arglist: name | name ',' arglist |
|
||||
hash: pair | pair ',' hash |
|
||||
gthash: gtpair | gtpair ',' gthash |
|
||||
pair: exp ',' exp | gtpair
|
||||
gtpair: exp "=>" exp
|
||||
varref: name | varref varpart
|
||||
varpart: '.' name | '[' exp ']'
|
||||
varpath: | varpath varpart
|
||||
%%
|
||||
62
template.y
62
template.y
|
|
@ -1,37 +1,49 @@
|
|||
// Грамматика Новой-Новой Версии шаблонизатора.
|
||||
// Конфликтов нет.
|
||||
// BEGIN, возможно, ещё будет ликвидирован.
|
||||
// FIXME не хватает foreach($a as $k => $v)
|
||||
// Контекстно-свободная грамматика шаблонизатора
|
||||
|
||||
// Подразумевается, что лексический анализатор зависим от работы синтаксического,
|
||||
// знает о его состоянии и соответственно выдаёт либо лексемы "внутри" блоков кода,
|
||||
// либо литералы "вне" оных
|
||||
|
||||
// Олдстайл BEGIN .. END ликвидирован
|
||||
|
||||
// TODO foreach ... as key => value
|
||||
|
||||
%token literal
|
||||
%token name
|
||||
|
||||
%left ".."
|
||||
%left "||" "OR" "XOR"
|
||||
%left "&&" "AND"
|
||||
%left "&"
|
||||
%nonassoc "==" "!=" "<" ">" "<=" ">="
|
||||
%left "+" "-"
|
||||
%left "*" "/" "%"
|
||||
|
||||
%%
|
||||
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
|
||||
chunks: | chunks chunk
|
||||
chunk: error | literal | "<!--" code_chunk "-->" | "{" exp "}"
|
||||
code_chunk: c_if | c_set | c_fn | c_for | exp
|
||||
c_if: "IF" exp "-->" chunks "<!--" "END" |
|
||||
"IF" exp "-->" chunks "<!--" "ELSE" "-->" chunks "<!--" "END" |
|
||||
"IF" exp "-->" chunks c_elseifs chunks "<!--" "END" |
|
||||
"IF" exp "-->" chunks c_elseifs chunks "<!--" "ELSE" "-->" chunks "<!--" "END"
|
||||
c_elseifs: "<!--" elseif exp "-->" | c_elseifs chunks "<!--" elseif exp "-->"
|
||||
c_set: "SET" varref "=" exp | "SET" varref "-->" chunks "<!--" "END"
|
||||
c_fn: fn name "(" arglist ")" "=" exp | fn name "(" arglist ")" "-->" chunks "<!--" "END"
|
||||
c_for: for varref "=" exp "-->" chunks "<!--" "END"
|
||||
fn: "FUNCTION" | "BLOCK" | "MACRO"
|
||||
for: "FOR" | "FOREACH"
|
||||
elseif: "ELSE" "IF" | "ELSIF" | "ELSEIF"
|
||||
|
||||
exp: p4 | p4 ".." exp
|
||||
p4: p5 | p5 "||" p4 | p5 "OR" p4 | p5 "XOR" p4
|
||||
p5: bitand | bitand "&&" p5 | bitand "AND" p5
|
||||
bitand: p6 | p6 "&" bitand
|
||||
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
|
||||
exp: exp ".." exp |
|
||||
exp "||" exp | exp "OR" exp | exp "XOR" exp |
|
||||
exp "&&" exp | exp "AND" exp |
|
||||
exp "&" exp |
|
||||
exp "==" exp | exp "!=" exp |
|
||||
exp "<" exp | exp ">" exp | exp "<=" exp | exp ">=" exp |
|
||||
exp "+" exp | exp "-" exp |
|
||||
exp "*" exp | exp "/" exp | exp "%" exp |
|
||||
p10
|
||||
p10: p11 | '-' p11
|
||||
p11: nonbrace | '(' exp ')' varpath | '!' p11 | "NOT" p11
|
||||
nonbrace: '{' hash '}' | literal | varref | func '(' list_or_gthash ')' | func nonbrace
|
||||
|
|
|
|||
Loading…
Reference in New Issue