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|
global GblActionParams: bool = false
global GblSectionPass: bool = false
bool action_params_find( Machine: str, Action: str )
= cc_action_params_find
bool action_params_insert( Machine: str, Action: str )
= cc_action_params_insert
rl ident
/( alpha | '_' ) ( alpha | digit | '_' )*/
rl number
/ digit+ /
rl hex_number
/ '0x' [0-9a-fA-F]+ /
rl hex_char
/ '0x' [0-9a-fA-F]{2} /
## Optimization for hex chars that appear near to each other. Converts the
## string of 2-digit hex chars into a single string. The parse tree walker
## concatenates the chars.
#rl hex_string /
# hex_char
# (
# (
# [\t\n ]+ |
# [\t\n ]* '.' [\t\n ]*
# )
# hex_char
# )+
#/
rl NL / '\n' /
rl c_comment
/ '/*' ( any | NL )* :>> '*/' /
rl cpp_comment
/ '//' [^\n]* NL /
rl ruby_comment
/ '#' [^\n]* NL /
rl s_literal
/ "'" ([^'\\\n] | '\\' (any | NL))* "'" /
rl d_literal
/ '"' ([^"\\] | NL | '\\' (any | NL))* '"' /
rl host_re_literal
/ '/' ([^/\\] | NL | '\\' (any | NL))* '/' /
namespace srlex
lex
ignore /[\t\n ]+/
literal `:: `; `)
token word /[a-zA-Z_][a-zA-Z0-9_]*/
end
end
struct machine
Name: str
ActionParams: map<str, str>
end
global MachineMap: map<str, machine> = new map<str, machine>()
global CurMachine: machine
global Lang: str
lex
token select /''/
{
if Lang == "ruby"
input->push( make_token( typeid<ruby_select>, '' ) )
elsif Lang == "ocaml"
input->push( make_token( typeid<ocaml_select>, '' ) )
elsif Lang == "crack"
input->push( make_token( typeid<crack_select>, '' ) )
else
input->push( make_token( typeid<c_select>, '' ) )
}
token c_select //
token ruby_select //
token ocaml_select //
token crack_select //
end
namespace ragel
lex
literal `}%% -ni
ignore /[\t\n ]+/
ignore /'#' any* :> '\n'/
literal `^ `| `- `, `: `! `? `.
literal `( `) `{ -ni ni- `} `* `& `+
literal `-- `:> `:>> `<: `-> `**
literal `|* `*| `=>
literal `@ `> `< `% `$
literal `from `to `eof `lerr `err
literal `when `inwhen `outwhen `>? `$? `%?
literal `:= `|= `= `; `.. `../i `::
literal `>~ `$~ `%~ `<~ `@~ `<>~
literal `>* `$* `%* `<* `@* `<>*
literal `>/ `$/ `%/ `</ `@/ `<>/
literal `>! `$! `%! `<! `@! `<>!
literal `>^ `$^ `%^ `<^ `@^ `<>^
literal `<>
literal `machine `action `variable `alphtype
`access `write `getkey `export `import
`include `prepush `postpop `nfaprepush `nfapostpop
literal `:nfa `:cond `:condplus `:condstar `):
token string /
'"' ( [^"\\] | '\\' any )* '"' 'i'? |
"'" ( [^'\\] | '\\' any )* "'" 'i'?
/
# token hex_string / hex_string /
token lex_regex_open /'/'/ -ni
token lex_sqopen_pos /'['/ -ni
token lex_sqopen_neg /'[^'/ -ni
token word / [a-zA-Z_][a-zA-Z0-9_]* /
token uint / number /
token hex / hex_number /
end
lex
token re_dot / '.' /
token re_star / '*' /
token re_char / ^( '\\' | '.' | '*' | '[' | '/' ) | '\\' . any /
token re_close / '/' 'i'? /
token re_sqopen_pos /'['/
token re_sqopen_neg /'[^'/
end
lex
token re_or_dash / '-' /
token re_or_char / ^( '\\' | '-' | ']' ) | '\\' . any /
token re_or_sqclose / ']' /
end
# Not cannot start with '{', terminated by ';', rewritten into { inline_expr }
token _inline_expr_reparse
/[^{;] [^;]* ';'/ {
R: str = input->pull( match_length - 1 )
input->pull( 1 )
input->push( "}" )
input->push( R )
input->push( "{" )
}
token variable_name /ident/
def inline_expr_reparse
[_inline_expr_reparse] :Reparse
| [action_expr] :ActionExpr
def join
[join `, expression] :Rec
| [expression] :Base
def expression
[expr_left expression_op_list] :Expression
def expression_op_list
[expression_op expression_op_list] :Op
| [] :Empty
def expression_op
[`| term] :Or
| [`& term] :And
| [`- term] :Sub
| [`-- term] :Ssub
def expr_left
[term] :Term
def term
[term_left term_op_list_short] :Term
def term_left
[factor_label] :FactorLabel
# This list is done manually to get shortest match.
def term_op_list_short
[] :Empty
| [term_op term_op_list_short] :Terms
def term_op
[factor_label] :None
| [`. factor_label] :Dot
| [`:> factor_label] :ColonLt
| [`:>> factor_label] :ColonLtLt
| [`<: factor_label] :GtColon
def factor_label
[word `: factor_label] :Label
| [factor_ep] :Ep
def factor_ep
[factor_aug `-> epsilon_target] :Epsilon
| [factor_aug] :Base
def epsilon_target
[epsilon_target `:: word] :Rec
| [word] :Base
def action_expr
[`{ c_select CInlineExpr: c_inline::inline_expr c_inline::`}] :C
| [`{ ruby_select RubyInlineExpr: ruby_inline::inline_expr ruby_inline::`}]
| [`{ ocaml_select OCamlInlineExpr: ocaml_inline::inline_expr ocaml_inline::`}]
| [`{ crack_select CrackInlineExpr: crack_inline::inline_expr crack_inline::`}]
def action_block
[`{ c_select CInlineBlock: c_inline::inline_block c_inline::`}] :C
| [`{ ruby_select RubyInlineBlock: ruby_inline::inline_block ruby_inline::`}]
| [`{ ocaml_select OCamlInlineBlock: ocaml_inline::inline_block ocaml_inline::`}]
| [`{ crack_select CrackInlineBlock: crack_inline::inline_block crack_inline::`}]
def action_arg_list
[action_arg_list `, action_ref] :Rec
| [action_ref] :Base
def opt_action_arg_list
[action_arg_list] :List
| [] :Empty
def named_action_ref
[word] :Plain
{
if ! GblSectionPass {
if action_params_find( CurMachine->Name, $lhs.word )
reject
}
}
| [word `( opt_action_arg_list `)] :Args
{
if ! GblSectionPass {
if ! action_params_find( CurMachine->Name, $lhs.word )
reject
}
}
def action_ref
[named_action_ref] :NamedRef
| [`( named_action_ref `)] :ParenNamed
| [action_block] :Block
def priority_name
[word] :Word
def error_name
[word] :Word
def priority_aug
[uint] :NoSign
| [`+ uint] :Plus
| [`- uint] :Minus
def aug_base
[`@] :Finish | [`>] :Enter | [`%] :Leave | [`$] :All
def aug_cond
[`>?] :Start1 | [`$?] :All1 | [`%?] :Leave1
| [`> `when] :Start2 | [`$ `when] :All2 | [`% `when] :Leave2
| [`inwhen] :Start3 | [`when] :All3 | [`outwhen] :Leave3
def aug_to_state
[`>~] :Start1 | [`<~] :NotStart1 | [`$~] :All1
| [`%~] :Final1 | [`@~] :NotFinal1 | [`<>~] :Middle1
| [`> `to] :Start2 | [`< `to] :NotStart2 | [`$ `to] :All2
| [`% `to] :Final2 | [`@ `to] :NotFinal2 | [`<> `to] :Middle2
def aug_from_state
[`>*] :Start1 | [`<*] :NotStart1 | [`$*] :All1
| [`%*] :Final1 | [`@*] :NotFinal1 | [`<>*] :Middle1
| [`> `from] :Start2 | [`< `from] :NotStart2 | [`$ `from] :All2
| [`% `from] :Final2 | [`@ `from] :NotFinal2 | [`<> `from] :Middle2
def aug_eof
[`>/] :Start1 | [`</] :NotStart1 | [`$/] :All1
| [`%/] :Final1 | [`@/] :NotFinal1 | [`<>/] :Middle1
| [`> `eof] :Start2 | [`< `eof] :NotStart2 | [`$ `eof] :All2
| [`% `eof] :Final2 | [`@ `eof] :NotFinal2 | [`<> `eof] :Middle2
def aug_gbl_error
[`>!] :Start1 | [`<!] :NotStart1 | [`$!] :All1
| [`%!] :Final1 | [`@!] :NotFinal1 | [`<>!] :Middle1
| [`> `err] :Start2 | [`< `err] :NotStart2 | [`$ `err] :All2
| [`% `err] :Final2 | [`@ `err] :NotFinal2 | [`<> `err] :Middle2
def aug_local_error
[`>^] :Start1 | [`<^] :NotStart1 | [`$^] :All1
| [`%^] :Final1 | [`@^] :NotFinal1 | [`<>^] :Middle1
| [`> `lerr] :Start2 | [`< `lerr] :NotStart2 | [`$ `lerr] :All2
| [`% `lerr] :Final2 | [`@ `lerr] :NotFinal2 | [`<> `lerr] :Middle2
def factor_aug
[factor_aug aug_base action_ref] :ActionRef
| [factor_aug aug_base priority_aug] :PriorEmbed
| [factor_aug aug_base `( priority_name `, priority_aug `)] :NamedPriorEmbed
| [factor_aug aug_cond action_ref] :CondEmbed
| [factor_aug aug_cond `! action_ref] :NegCondEmbed
| [factor_aug aug_to_state action_ref] :ToStateAction
| [factor_aug aug_from_state action_ref] :FromStateAction
| [factor_aug aug_eof action_ref] :EofAction
| [factor_aug aug_gbl_error action_ref] :GblErrorAction
| [factor_aug aug_local_error action_ref] :LocalErrorDef
| [factor_aug aug_local_error `( error_name `, action_ref `)] :LocalErrorName
| [factor_rep] :Base
def factor_rep
[factor_neg factor_rep_op_list] :Op
def factor_rep_op_list
[factor_rep_op factor_rep_op_list] :Rec
| [] :Base
def factor_rep_op
[`*] :Star
| [`**] :StarStar
| [`?] :Optional
| [`+] :Plus
| [`{ factor_rep_num `}] :ExactRep
| [`{ `, factor_rep_num `}] :MaxRep
| [`{ factor_rep_num `, `}] :MinRep
| [`{ LowRep: factor_rep_num `, HighRep: factor_rep_num `}] :RangeRep
def factor_rep_num
[uint] :RepNum
def factor_neg
[`! factor_neg] :Bang
| [`^ factor_neg] :Caret
| [factor] :Base
def opt_max_arg
[`, action_ref] :Action
| [] :Empty
def nfastar
[`:nfa]
def colon_cond
[`:cond] :Cond
| [`:condstar] :CondStar
| [`:condplus] :CondPlus
def factor
[alphabet_num] :AlphabetNum
| [word] :Word
| [string] :String
#| [hex_string] :HexString
| [lex_sqopen_pos reg_or_data re_or_sqclose] :PosOrBlock
| [lex_sqopen_neg reg_or_data re_or_sqclose] :NegOrBlock
| [lex_regex_open regex re_close] :Regex
| [RL1: range_lit `.. RL2: range_lit] :Range
| [RL1: range_lit `../i RL2: range_lit] :RangeIndep
| [nfastar `( expression `,
Push: action_ref `, Pop: action_ref `, Init: action_ref `, Stay: action_ref `,
Repeat: action_ref `, Exit: action_ref `):] :Nfa
| [colon_cond `( expression `,
Init: action_ref `, Inc: action_ref `, Min: action_ref OptMax: opt_max_arg `):] :Cond
| [`( join `)] :Join
def regex
[reg_item_rep_list] :List
def reg_item_rep_list
[reg_item_rep_list reg_item_rep] :Rec
| [] :Base
def reg_item_rep
[reg_item re_star] :Star
| [reg_item] :Base
def reg_item
[re_sqopen_pos reg_or_data re_or_sqclose] :PosOrBlock
| [re_sqopen_neg reg_or_data re_or_sqclose] :NegOrBlock
| [re_dot] :Dot
| [re_char] :Char
def reg_or_data
[reg_or_data reg_or_char] :Data
| [] :Base
def reg_or_char
[re_or_char] :Char
| [Low: re_or_char re_or_dash High: re_or_char] :Range
def range_lit
[string] :String
| [alphabet_num] :AN
def alphabet_num
[uint] :Uint
| [`- uint] :Neg
| [hex] :Hex
def lm_act
[`=> action_ref] :ActionRef
| [action_block] :ActionBlock
def opt_lm_act
[lm_act] :Act
| [] :Empty
def lm_stmt
[join opt_lm_act `;] :LmStmt commit
| [assignment] :Assignment
| [action_spec] :ActionSpec
def lm_stmt_list
[lm_stmt_list lm_stmt] :Rec
| [lm_stmt] :Base
def lm
[join] :Join
| [`|* lm_stmt_list `*|] :Lm
#
# Actions
#
def action_param
[word] :Word
def action_param_list
[action_param_list `, action_param] :Rec
| [action_param] :Base
def opt_action_param_list
[action_param_list] :List
| [] :Empty
def action_params
[`( opt_action_param_list `)] :List
{
GblActionParams = true
}
def action_spec
[`action word action_params action_block] :ActionSpecParams commit
{
if ! GblSectionPass {
# Track that this action has params so we can parse appropriately
# when reducing.
# CurMachine->ActionParams->insert( $lhs.word, $lhs.word )
action_params_insert( CurMachine->Name, $lhs.word )
}
# Reset after parsing the block.
GblActionParams = false
}
| [`action word action_block] :ActionSpec commit
{
GblActionParams = false
}
def def_name
[word] :Word
#
# Machine Instantiations.
#
def assignment
[opt_export def_name `= join `;] :Assignment commit
def instantiation
[opt_export def_name `:= lm `;] :Instantiation commit
def nfa_expr
[nfa_expr `| term] :Union
| [term] :Base
def nfa_round_spec
[Depth: uint `, Group: uint] :Spec
def nfa_round_list
[nfa_round_list `, nfa_round_spec] :Recurse
| [nfa_round_spec] :Base
def nfa_rounds
[`( nfa_round_list `)] :Rounds
def nfa_union
[def_name `|= nfa_rounds nfa_expr `;] :NfaUnion commit
def alphtype_type
[W1: word] :One
| [W1: word W2: word] :Two
def include_spec
[word] :Machine
| [string] :File
| [word string] :MachineFile
def opt_export
[`export] :Export
| [] :Base
def write_arg
[word] :Word
def machine_name
[`machine word `;] :MachineName
{
Machine: machine = MachineMap->find( $lhs.word )
if !Machine
{
Machine = new machine()
Machine->Name = $lhs.word
Machine->ActionParams = new map<str, str>()
MachineMap->insert( Machine->Name, Machine )
}
CurMachine = Machine
}
def statement
[assignment] :Assignment
| [instantiation] :Instantiation
| [nfa_union] :NfaUnion
| [action_spec] :ActionSpec
| [`prepush action_block] :PrePush commit
| [`postpop action_block] :PostPop commit
| [`variable variable_name inline_expr_reparse] :Variable commit
| [`alphtype alphtype_type `;] :AlphType commit
| [`access inline_expr_reparse] :Access commit
| [`write Cmd: word ArgList: write_arg* `;] :Write commit
| [`getkey inline_expr_reparse] :GetKey commit
| [`import string `;] :Import commit
| [`include include_spec `;] :Include commit
| [`nfaprepush action_block] :NfaPrePush commit
| [`nfapostpop action_block] :NfaPostPop commit
def opt_machine_name
[machine_name] :MachineName
| [] :Empty
def ragel_start
[opt_machine_name statement*]
end
|
