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|
##### LM #####
#
# Grammar
#
# The items in this scanner may have newline in front of them.
lex
# Reserved Words.
literal '__LINE__', '__FILE__', '__ENCODING__', 'BEGIN', 'END', 'alias',
'and', 'begin', 'break', 'case', 'class', 'def', 'defined?', 'do',
'else', 'elsif', 'end', 'ensure', 'false', 'for', 'in', 'module',
'next', 'nil', 'not', 'or', 'redo', 'rescue', 'retry', 'return',
'self', 'super', 'then', 'true', 'undef', 'when', 'yield', 'if',
'unless', 'while', 'until'
token tNTH_REF /'$' [0-9]+/
token tBACK_REF /'$' ( '&' | '`' | '\'' | '+' ) /
literal ')', ',', ']'
literal '{', '}', ':'
literal '.', '::'
literal '->'
# Unary operators.
literal '!', '~'
token tUPLUS /'+'/
token tUMINUS /'-'/
token tLBRACK /'['/
token tLPAREN /'('/
token tSTAR /'*'/
token tBAR /'|'/
token tAMPER /'&'/
token tIDENTIFIER /[a-z][a-zA-Z_]*/
token tFID /[a-z][a-zA-Z_]* ('!'|'?')/
token tCONSTANT /[A-Z][a-zA-Z_]*/
token tGVAR /'$' [a-zA-Z_]+/
token tIVAR /'@' [a-zA-Z_]+/
token tCVAR /'@@' [a-zA-Z_]+/
token tINTEGER /[0-9]+/
token tFLOAT /[0-9]+ '.' [0-9]+/
token tDSTRING_BEG /'"'/
token tSSTRING_BEG /'\''/
token tXSTRING_BEG /'`'/
ignore /[ \t\n]+/
ignore comment /'#' [^\n]* '\n'/
end
# These items cannot appear at the beginning of a line (except maybe the first).
lex
ignore /[\t ]+/
literal '+', '-', '*', '**', '/', '%', '^'
literal '|', '&', '||', '&&'
literal '[', '('
literal '='
literal '<<', '>>'
literal '?'
literal '<=>'
literal '=>'
literal '[]', '[]='
literal '=~', '!~'
literal '<', '>', '>=', '<='
literal '!=', '==', '==='
literal '..', '...'
end
lex
ignore /[\t ]+/
ignore /'#' [^\n]*/
literal ';'
literal '\n'
end
lex
token dstring_contents /[^"]+/
token tDSTRING_END /'"'/
end
lex
token sstring_contents /[^']+/
token tSSTRING_END /'\''/
end
lex
token xstring_contents /[^`]+/
token tXSTRING_END /'`'/
end
def ruby
[compstmt]
def compstmt
[stmts opt_terms]
def bodystmt
[compstmt opt_rescue opt_else opt_ensure]
def opt_rescue
# ['rescue' exc_list exc_var then compstmt opt_rescue] |
[]
def then
[term]
| ['then']
| [term 'then']
def do
[term]
| ['do']
def if_tail
[opt_else]
| ['elsif' expr_value then compstmt if_tail]
def opt_else
['else' compstmt]
| []
def opt_ensure
['ensure' compstmt]
| []
def stmts
[stmts terms stmt]
| [stmt]
| []
def opt_terms
[terms]
| []
def terms
[term]
| [terms ';']
def term
[';']
| ['\n']
def stmt
['alias' fitem fitem]
| ['undef' undef_list]
| [stmt 'if' expr_value]
| [stmt 'unless' expr_value]
| [stmt 'while' expr_value]
| [stmt 'until' expr_value]
| [stmt 'rescue' stmt]
| ['BEGIN' '{' compstmt '}']
| ['END' '{' compstmt '}']
| [lhs '=' mrhs]
| [mlhs '=' arg_value]
| [mlhs '=' mrhs]
| [expr]
def mlhs
[mlhs_basic]
| [tLPAREN mlhs ')']
def mlhs_basic
[mlhs_head]
def mlhs_head
[mlhs_item ',' mlhs_head]
| [mlhs_item]
def mlhs_item
[variable]
| ['*' mlhs_item]
| ['*']
| [primary_value '[' opt_call_args ']']
| [primary_value '.' tIDENTIFIER]
| [primary_value '.' tCONSTANT]
| [primary_value '::' tIDENTIFIER]
| [primary_value '::' tCONSTANT]
| ['::' tCONSTANT]
| [backref]
| [tLPAREN mlhs ')']
def lhs
[variable]
| [primary_value '[' opt_call_args ']']
| [primary_value '.' tIDENTIFIER]
| [primary_value '.' tCONSTANT]
| [primary_value '::' tIDENTIFIER]
| [primary_value '::' tCONSTANT]
| ['::' tCONSTANT]
| [backref]
def mrhs
[args ',' arg_value]
| [args ',' '*' arg_value]
| ['*' arg_value]
def expr
[expr 'and' expr]
| [expr 'or' expr]
| ['not' expr]
| [arg]
def expr_value
[expr]
def opt_brace_block
[brace_block]
| []
def block_param_def
[tBAR opt_bv_decl tBAR]
| [tBAR block_param opt_bv_decl tBAR]
def block_param
[block_arg_list]
| []
def block_arg_list
[block_arg_list ',' block_arg_item]
| [block_arg_item]
def block_arg_item
[f_norm_arg]
| [f_rest_arg]
| [f_block_arg]
| ['(' f_args ')']
def opt_bv_decl
[';' bv_decls]
| []
def bv_decls
[bvar]
| [bv_decls ',' bvar]
def bvar
[tIDENTIFIER]
def opt_block_param
[block_param_def]
| []
def operation
[tIDENTIFIER]
| [tCONSTANT]
| [tFID]
def operation2
[tIDENTIFIER]
| [tCONSTANT]
| [tFID]
| [op]
def operation3
[tIDENTIFIER]
| [tFID]
| [op]
def op
['|'] | ['^'] | ['&'] | ['<=>'] | ['=='] | ['==='] | ['=~'] | ['!~'] |
['>'] | ['>='] | ['<'] | ['<='] | ['!='] | ['<<'] | ['>>'] | ['+'] |
['-'] | ['*'] | ['/'] | ['%'] | ['**'] | ['!'] | ['~'] | ['[]'] | ['[]='] |
[tXSTRING_BEG]
def opt_call_args
[call_args]
| []
def call_args
[args opt_block_arg]
| [assocs opt_block_arg]
| [args ',' assocs opt_block_arg]
| [block_arg]
def args
[arg_value]
| ['*' arg_value]
| [args ',' arg_value]
| [args ',' '*' arg_value]
def arg_value
[arg]
def opt_block_arg
[',' block_arg]
| []
def block_arg
[tAMPER arg_value]
right '='
left 'rescue'
right '?', ':'
nonassoc '..', '...'
left '||'
left '&&'
nonassoc '<=>', '==', '===', '!=', '=~', '!~'
left '>', '>=', '<', '<='
left '|', '^'
left '&'
left '<<', '>>'
left '+', '-'
left '*', '/', '%'
#right tUMINUS_NUM tUMINUS
right tUMINUS
right '**'
right '!', '~', tUPLUS
def arg
[lhs '=' arg]
| [lhs '=' arg 'rescue' arg]
| [arg '?' arg ':' arg]
| [arg '..' arg]
| [arg '...' arg]
| [arg '||' arg]
| [arg '&&' arg]
| [arg '<=>' arg]
| [arg '==' arg]
| [arg '===' arg]
| [arg '!=' arg]
| [arg '=~' arg]
| [arg '!~' arg]
| [arg '>' arg]
| [arg '>=' arg]
| [arg '<' arg]
| [arg '<=' arg]
| [arg '|' arg]
| [arg '^' arg]
| [arg '&' arg]
| [arg '<<' arg]
| [arg '>>' arg]
| [arg '+' arg]
| [arg '-' arg]
| [arg '*' arg]
| [arg '/' arg]
| [arg '%' arg]
| [arg '**' arg]
| ['!' primary]
| ['~' primary]
| [tUMINUS primary]
| [tUPLUS primary]
| ['defined?' arg]
| [primary]
def primary_value
[primary]
def primary
[pliteral]
| [strings]
| [xstring]
#| [regexp]
#| [words]
#| [qwords]
| [var_ref]
| [backref]
| [tFID]
| ['begin' bodystmt 'end']
| [tLPAREN compstmt ')']
| [primary_value '::' tCONSTANT]
| ['::' tCONSTANT]
| [tLBRACK aref_args ']']
| ['{' assoc_list '}']
| ['defined?' '(' expr ')']
| [operation brace_block]
| [method_call]
| [method_call brace_block]
| ['->' lambda]
| ['if' expr_value then compstmt if_tail 'end']
| ['unless' expr_value then compstmt opt_else 'end']
| ['while' expr_value do compstmt 'end']
| ['until' expr_value do compstmt 'end']
#| ['case' expr_value opt_terms case_body 'end']
#| ['case' opt_terms case_body 'end']
| ['for' for_var 'in' expr_value do compstmt 'end']
| ['class' cpath superclass bodystmt 'end']
| ['class' '<<' expr term bodystmt 'end']
| ['module' cpath bodystmt 'end']
| ['def' fname f_arglist bodystmt 'end']
| ['def' singleton dot_or_colon fname f_arglist bodystmt 'end']
| ['break']
| ['next']
| ['redo']
| ['retry']
def for_var
[lhs]
| [mlhs]
def lambda
[f_larglist lambda_body]
def f_larglist
['(' f_args opt_bv_decl ')']
| [f_args opt_bv_decl]
def lambda_body
['{' compstmt '}']
| ['do' compstmt 'end']
def assoc_list
[assocs trailer]
| []
def assocs
[assocs ',' assoc]
| [assoc]
def assoc
[arg_value '=>' arg_value]
| [':' arg_value]
def singleton
[var_ref]
| ['(' expr ')']
def dot_or_colon
['.']
| ['::']
def aref_args
[args trailer]
| [args ',' assocs trailer]
| [assocs trailer]
| []
def trailer
[',']
| []
def brace_block
['{' opt_block_param compstmt '}']
| ['do' opt_block_param compstmt 'end']
def f_arglist
['(' f_args ')']
| [f_args term]
def f_args
[f_arg_list]
| []
def f_arg_list
[f_arg_list ',' f_arg_item]
| [f_arg_item]
def f_arg_item
[f_norm_arg]
| [f_opt]
| [f_rest_arg]
| [f_block_arg]
| ['(' f_args ')']
def f_opt
[tIDENTIFIER '=' arg_value]
def f_rest_arg
['*' tIDENTIFIER]
| ['*']
def f_block_arg
[tAMPER tIDENTIFIER]
def f_norm_arg
[tIDENTIFIER]
def backref
[tNTH_REF] | [tBACK_REF]
def superclass
[term]
| ['<' expr_value term]
def cpath
['::' cname]
| [cname]
| [primary_value '::' cname]
def fname
[tIDENTIFIER]
| [tCONSTANT]
| [tFID]
| [op]
| [reswords]
def reswords
['__LINE__'] | ['__FILE__'] | ['__ENCODING__'] | ['BEGIN'] | ['END'] |
['alias'] | ['and'] | ['begin'] | ['break'] | ['case'] | ['class'] |
['def'] | ['defined?'] | ['do'] | ['else'] | ['elsif'] | ['end'] |
['ensure'] | ['false'] | ['for'] | ['in'] | ['module'] |
['next'] | ['nil'] | ['not'] | ['or'] | ['redo'] | ['rescue'] |
['retry'] | ['return'] | ['self'] | ['super'] | ['then'] | ['true'] |
['undef'] | ['when'] | ['yield'] | ['if'] | ['unless'] | ['while'] |
['until']
def cname
[tIDENTIFIER]
| [tCONSTANT]
def pliteral
[numeric]
| [symbol]
#| [dsym]
def strings
[string]
def string
# [tCHAR]
[string1]
| [string string1]
def string1
[tSSTRING_BEG sstring_contents? tSSTRING_END]
| [tDSTRING_BEG dstring_contents? tDSTRING_END]
def xstring
[tXSTRING_BEG xstring_contents? tXSTRING_END]
def numeric
[tINTEGER]
| [tFLOAT]
def symbol
[':' sym]
def sym
[fname]
| [tIVAR]
| [tGVAR]
| [tCVAR]
def fitem
[fsym]
#| [dsym]
def undef_list
[fitem]
| [undef_list ',' fitem]
def fsym
[fname]
| [symbol]
#def dsym
# [':' xstring_contents tDSTRING_END]
def var_ref
[variable]
def variable
[tIDENTIFIER] | [tIVAR] | [tGVAR] | [tCONSTANT] | [tCVAR] | ['nil'] |
['self'] | ['true'] | ['false'] | ['__FILE__'] | ['__LINE__'] |
['__ENCODING__']
# Required whitespace, but newline is not allowed.
token ws_no_nl
/[ \t]+[^ \t\n]/
{
input.push( make_token( typeid<ws_no_nl> input.pull(match_length-1) ) )
}
def method_call
[operation paren_args]
| [operation ws_no_nl call_args]
| [primary_value '.' operation2 opt_paren_args]
| [primary_value '.' operation2 ws_no_nl call_args]
| [primary_value '::' operation2 opt_paren_args]
| [primary_value '::' operation2 ws_no_nl call_args]
| [primary_value '.' paren_args]
| [primary_value '::' paren_args]
| ['super' paren_args]
| ['super' ws_no_nl call_args]
| ['super']
| ['yield' paren_args]
| ['yield' ws_no_nl call_args]
| ['yield']
| ['return' call_args]
| ['return']
| [primary_value '[' opt_call_args ']']
def opt_paren_args
[paren_args]
| []
def paren_args
['(' opt_call_args ')']
#
# Grammar finished
#
parse RP: ruby[stdin]
R: ruby = RP.tree
print_xml( R )
print( '\n' )
#for T: primary in R
# print_xml( T, '\n\n' )
##### IN #####
##### EXP #####
<ruby><compstmt><stmts></stmts><opt_terms></opt_terms></compstmt></ruby>
|
