/usr/lib/ruby/vendor_ruby/ruby18_parser.y is in ruby-parser 3.6.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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class Ruby18Parser
token kCLASS kMODULE kDEF kUNDEF kBEGIN kRESCUE kENSURE kEND kIF kUNLESS
kTHEN kELSIF kELSE kCASE kWHEN kWHILE kUNTIL kFOR kBREAK kNEXT
kREDO kRETRY kIN kDO kDO_COND kDO_BLOCK kRETURN kYIELD kSUPER
kSELF kNIL kTRUE kFALSE kAND kOR kNOT kIF_MOD kUNLESS_MOD kWHILE_MOD
kUNTIL_MOD kRESCUE_MOD kALIAS kDEFINED klBEGIN klEND k__LINE__
k__FILE__ tIDENTIFIER tFID tGVAR tIVAR tCONSTANT tCVAR tNTH_REF
tBACK_REF tSTRING_CONTENT tINTEGER tFLOAT tREGEXP_END tUPLUS
tUMINUS tUMINUS_NUM tPOW tCMP tEQ tEQQ tNEQ tGEQ tLEQ tANDOP
tOROP tMATCH tNMATCH tDOT tDOT2 tDOT3 tAREF tASET tLSHFT tRSHFT
tCOLON2 tCOLON3 tOP_ASGN tASSOC tLPAREN tLPAREN2 tRPAREN tLPAREN_ARG
tLBRACK tLBRACK2 tRBRACK tLBRACE tLBRACE_ARG tSTAR tSTAR2 tAMPER tAMPER2
tTILDE tPERCENT tDIVIDE tPLUS tMINUS tLT tGT tPIPE tBANG tCARET
tLCURLY tRCURLY tBACK_REF2 tSYMBEG tSTRING_BEG tXSTRING_BEG tREGEXP_BEG
tWORDS_BEG tQWORDS_BEG tSTRING_DBEG tSTRING_DVAR tSTRING_END tSTRING
tSYMBOL tNL tEH tCOLON tCOMMA tSPACE tSEMI tLAST_TOKEN
prechigh
right tBANG tTILDE tUPLUS
right tPOW
right tUMINUS_NUM tUMINUS
left tSTAR2 tDIVIDE tPERCENT
left tPLUS tMINUS
left tLSHFT tRSHFT
left tAMPER2
left tPIPE tCARET
left tGT tGEQ tLT tLEQ
nonassoc tCMP tEQ tEQQ tNEQ tMATCH tNMATCH
left tANDOP
left tOROP
nonassoc tDOT2 tDOT3
right tEH tCOLON
left kRESCUE_MOD
right tEQL tOP_ASGN
nonassoc kDEFINED
right kNOT
left kOR kAND
nonassoc kIF_MOD kUNLESS_MOD kWHILE_MOD kUNTIL_MOD
nonassoc tLBRACE_ARG
nonassoc tLOWEST
preclow
rule
program: {
self.lexer.lex_state = :expr_beg
}
compstmt
{
result = val[1]
}
bodystmt: compstmt opt_rescue opt_else opt_ensure
{
result = new_body val
}
compstmt: stmts opt_terms
{
result = new_compstmt val
}
stmts: none
| stmt
| stmts terms stmt
{
result = block_append val[0], val[2]
}
| error stmt
{
result = val[1]
}
stmt: kALIAS fitem
{
lexer.lex_state = :expr_fname
result = self.lexer.lineno
}
fitem
{
result = s(:alias, val[1], val[3]).line(val[2])
}
| kALIAS tGVAR tGVAR
{
result = s(:valias, val[1].to_sym, val[2].to_sym)
}
| kALIAS tGVAR tBACK_REF
{
result = s(:valias, val[1].to_sym, :"$#{val[2]}")
}
| kALIAS tGVAR tNTH_REF
{
yyerror "can't make alias for the number variables"
}
| kUNDEF undef_list
{
result = val[1]
}
| stmt kIF_MOD expr_value
{
result = new_if val[2], val[0], nil
}
| stmt kUNLESS_MOD expr_value
{
result = new_if val[2], nil, val[0]
}
| stmt kWHILE_MOD expr_value
{
result = new_while val[0], val[2], true
}
| stmt kUNTIL_MOD expr_value
{
result = new_until val[0], val[2], true
}
| stmt kRESCUE_MOD stmt
{
result = s(:rescue, val[0], new_resbody(s(:array), val[2]))
}
| klBEGIN
{
if (in_def || in_single > 0) then
yyerror "BEGIN in method"
end
self.env.extend
}
tLCURLY compstmt tRCURLY
{
result = new_iter s(:preexe), nil, val[3]
}
| klEND tLCURLY compstmt tRCURLY
{
if (in_def || in_single > 0) then
yyerror "END in method; use at_exit"
end
result = new_iter s(:postexe), nil, val[2]
}
| lhs tEQL command_call
{
result = node_assign val[0], val[2]
}
| mlhs tEQL command_call
{
result = new_masgn val[0], val[2], :wrap
}
| var_lhs tOP_ASGN command_call
{
result = new_op_asgn val
}
| primary_value tLBRACK2 aref_args tRBRACK tOP_ASGN command_call
{
result = s(:op_asgn1, val[0], val[2], val[4].to_sym, val[5])
}
| primary_value tDOT tIDENTIFIER tOP_ASGN command_call
{
result = s(:op_asgn, val[0], val[4], val[2].to_sym, val[3].to_sym)
}
| primary_value tDOT tCONSTANT tOP_ASGN command_call
{
result = s(:op_asgn, val[0], val[4], val[2].to_sym, val[3].to_sym)
}
| primary_value tCOLON2 tIDENTIFIER tOP_ASGN command_call
{
result = s(:op_asgn, val[0], val[4], val[2], val[3])
}
| backref tOP_ASGN command_call
{
backref_assign_error val[0]
}
| lhs tEQL mrhs
{
result = node_assign val[0], s(:svalue, val[2])
}
| mlhs tEQL arg_value
{
result = new_masgn val[0], val[2], :wrap
}
| mlhs tEQL mrhs
{
result = new_masgn val[0], val[2]
}
| expr
expr: command_call
| expr kAND expr
{
result = logop(:and, val[0], val[2])
}
| expr kOR expr
{
result = logop(:or, val[0], val[2])
}
| kNOT expr
{
result = s(:not, val[1])
}
| tBANG command_call
{
result = s(:not, val[1])
}
| arg
expr_value: expr
{
result = value_expr(val[0])
}
command_call: command
| block_command
| kRETURN call_args
{
line = val[0].last
result = s(:return, ret_args(val[1])).line(line)
}
| kBREAK call_args
{
line = val[0].last
result = s(:break, ret_args(val[1])).line(line)
}
| kNEXT call_args
{
line = val[0].last
result = s(:next, ret_args(val[1])).line(line)
}
block_command: block_call
| block_call tDOT operation2 command_args
{
result = new_call val[0], val[2], val[3]
}
| block_call tCOLON2 operation2 command_args
{
result = new_call val[0], val[2], val[3]
}
cmd_brace_block: tLBRACE_ARG
{
self.env.extend(:dynamic)
result = self.lexer.lineno
}
opt_block_var
{
result = nil # self.env.dynamic.keys
}
compstmt tRCURLY
{
result = new_iter nil, val[2], val[4]
self.env.unextend
}
command: operation command_args =tLOWEST
{
result = new_call nil, val[0].to_sym, val[1]
}
| operation command_args cmd_brace_block
{
result = new_call nil, val[0].to_sym, val[1]
if val[2] then
block_dup_check result, val[2]
result, operation = val[2], result
result.insert 1, operation
end
}
| primary_value tDOT operation2 command_args =tLOWEST
{
result = new_call val[0], val[2].to_sym, val[3]
}
| primary_value tDOT operation2 command_args cmd_brace_block
{
result = new_call val[0], val[2].to_sym, val[3]
raise "no2"
if val[4] then
block_dup_check result, val[4]
val[2] << result
result = val[2]
end
}
| primary_value tCOLON2 operation2 command_args =tLOWEST
{
result = new_call val[0], val[2].to_sym, val[3]
}
| primary_value tCOLON2 operation2 command_args cmd_brace_block
{
result = new_call val[0], val[2].to_sym, val[3]
raise "no3"
if val[4] then
block_dup_check result, val[4]
val[2] << result
result = val[2]
end
}
| kSUPER command_args
{
result = new_super val[1]
}
| kYIELD command_args
{
result = new_yield val[1]
}
mlhs: mlhs_basic
| tLPAREN mlhs_entry tRPAREN
{
result = val[1]
}
mlhs_entry: mlhs_basic
| tLPAREN mlhs_entry tRPAREN
{
result = s(:masgn, s(:array, val[1]))
}
mlhs_basic: mlhs_head
{
result = s(:masgn, val[0])
}
| mlhs_head mlhs_item
{
result = s(:masgn, val[0] << val[1].compact)
}
| mlhs_head tSTAR mlhs_node
{
result = s(:masgn, val[0] << s(:splat, val[2]))
}
| mlhs_head tSTAR
{
result = s(:masgn, val[0] << s(:splat))
}
| tSTAR mlhs_node
{
result = s(:masgn, s(:array, s(:splat, val[1])))
}
| tSTAR
{
result = s(:masgn, s(:array, s(:splat)))
}
mlhs_item: mlhs_node
| tLPAREN mlhs_entry tRPAREN
{
result = val[1]
}
mlhs_head: mlhs_item tCOMMA
{
result = s(:array, val[0])
}
| mlhs_head mlhs_item tCOMMA
{
result = val[0] << val[1].compact
}
mlhs_node: variable
{
result = assignable val[0]
}
| primary_value tLBRACK2 aref_args tRBRACK
{
result = aryset val[0], val[2]
}
| primary_value tDOT tIDENTIFIER
{
result = s(:attrasgn, val[0], :"#{val[2]}=")
}
| primary_value tCOLON2 tIDENTIFIER
{
result = s(:attrasgn, val[0], :"#{val[2]}=")
}
| primary_value tDOT tCONSTANT
{
result = s(:attrasgn, val[0], :"#{val[2]}=")
}
| primary_value tCOLON2 tCONSTANT
{
if (in_def || in_single > 0) then
yyerror "dynamic constant assignment"
end
result = s(:const, s(:colon2, val[0], val[2].to_sym), nil)
}
| tCOLON3 tCONSTANT
{
if (in_def || in_single > 0) then
yyerror "dynamic constant assignment"
end
result = s(:const, nil, s(:colon3, val[1].to_sym))
}
| backref
{
backref_assign_error val[0]
}
lhs: variable
{
result = assignable val[0]
}
| primary_value tLBRACK2 aref_args tRBRACK
{
result = aryset val[0], val[2]
}
| primary_value tDOT tIDENTIFIER
{
result = s(:attrasgn, val[0], :"#{val[2]}=")
}
| primary_value tCOLON2 tIDENTIFIER
{
result = s(:attrasgn, val[0], :"#{val[2]}=")
}
| primary_value tDOT tCONSTANT
{
result = s(:attrasgn, val[0], :"#{val[2]}=")
}
| primary_value tCOLON2 tCONSTANT
{
if (in_def || in_single > 0) then
yyerror "dynamic constant assignment"
end
result = s(:const, s(:colon2, val[0], val[2].to_sym))
}
| tCOLON3 tCONSTANT
{
if (in_def || in_single > 0) then
yyerror "dynamic constant assignment"
end
result = s(:const, s(:colon3, val[1].to_sym))
}
| backref
{
backref_assign_error val[0]
}
cname: tIDENTIFIER
{
yyerror "class/module name must be CONSTANT"
}
| tCONSTANT
cpath: tCOLON3 cname
{
result = s(:colon3, val[1].to_sym)
}
| cname
{
result = val[0].to_sym
}
| primary_value tCOLON2 cname
{
result = s(:colon2, val[0], val[2].to_sym)
}
fname: tIDENTIFIER | tCONSTANT | tFID
| op
{
lexer.lex_state = :expr_end
result = val[0]
}
| reswords
{
lexer.lex_state = :expr_end
result = val[0]
}
fsym: fname | symbol
fitem: fsym { result = s(:lit, val[0].to_sym) }
| dsym
undef_list: fitem
{
result = new_undef val[0]
}
|
undef_list tCOMMA
{
lexer.lex_state = :expr_fname
}
fitem
{
result = new_undef val[0], val[3]
}
op: tPIPE | tCARET | tAMPER2 | tCMP | tEQ | tEQQ
| tMATCH | tGT | tGEQ | tLT | tLEQ | tLSHFT
| tRSHFT | tPLUS | tMINUS | tSTAR2 | tSTAR | tDIVIDE
| tPERCENT | tPOW | tTILDE | tUPLUS | tUMINUS | tAREF
| tASET | tBACK_REF2
reswords: k__LINE__ | k__FILE__ | klBEGIN | klEND | kALIAS | kAND
| kBEGIN | kBREAK | kCASE | kCLASS | kDEF | kDEFINED
| kDO | kELSE | kELSIF | kEND | kENSURE | kFALSE
| kFOR | kIN | kMODULE | kNEXT | kNIL | kNOT
| kOR | kREDO | kRESCUE | kRETRY | kRETURN | kSELF
| kSUPER | kTHEN | kTRUE | kUNDEF | kWHEN | kYIELD
| kIF | kUNLESS | kWHILE | kUNTIL
arg: lhs tEQL arg
{
result = node_assign val[0], val[2]
}
| lhs tEQL arg kRESCUE_MOD arg
{
result = node_assign val[0], s(:rescue, val[2], new_resbody(s(:array), val[4]))
# result.line = val[0].line
}
| var_lhs tOP_ASGN arg
{
result = new_op_asgn val
}
| primary_value tLBRACK2 aref_args tRBRACK tOP_ASGN arg
{
result = s(:op_asgn1, val[0], val[2], val[4].to_sym, val[5])
val[2][0] = :arglist if val[2]
}
| primary_value tDOT tIDENTIFIER tOP_ASGN arg
{
result = s(:op_asgn2, val[0], :"#{val[2]}=", val[3].to_sym, val[4])
}
| primary_value tDOT tCONSTANT tOP_ASGN arg
{
result = s(:op_asgn2, val[0], :"#{val[2]}=", val[3].to_sym, val[4])
}
| primary_value tCOLON2 tIDENTIFIER tOP_ASGN arg
{
result = s(:op_asgn, val[0], val[4], val[2].to_sym, val[3].to_sym)
}
| primary_value tCOLON2 tCONSTANT tOP_ASGN arg
{
yyerror "constant re-assignment"
}
| tCOLON3 tCONSTANT tOP_ASGN arg
{
yyerror "constant re-assignment"
}
| backref tOP_ASGN arg
{
backref_assign_error val[0]
}
| arg tDOT2 arg
{
v1, v2 = val[0], val[2]
if v1.node_type == :lit and v2.node_type == :lit and Fixnum === v1.last and Fixnum === v2.last then
result = s(:lit, (v1.last)..(v2.last))
else
result = s(:dot2, v1, v2)
end
}
| arg tDOT3 arg
{
v1, v2 = val[0], val[2]
if v1.node_type == :lit and v2.node_type == :lit and Fixnum === v1.last and Fixnum === v2.last then
result = s(:lit, (v1.last)...(v2.last))
else
result = s(:dot3, v1, v2)
end
}
| arg tPLUS arg
{
result = new_call val[0], :+, argl(val[2])
}
| arg tMINUS arg
{
result = new_call val[0], :-, argl(val[2])
}
| arg tSTAR2 arg
{
result = new_call val[0], :*, argl(val[2])
}
| arg tDIVIDE arg
{
result = new_call val[0], :"/", argl(val[2])
}
| arg tPERCENT arg
{
result = new_call val[0], :"%", argl(val[2])
}
| arg tPOW arg
{
result = new_call val[0], :**, argl(val[2])
}
| tUMINUS_NUM tINTEGER tPOW arg
{
result = new_call(new_call(s(:lit, val[1]), :"**", argl(val[3])), :"-@")
}
| tUMINUS_NUM tFLOAT tPOW arg
{
result = new_call(new_call(s(:lit, val[1]), :"**", argl(val[3])), :"-@")
}
| tUPLUS arg
{
if val[1][0] == :lit then
result = val[1]
else
result = new_call val[1], :"+@"
end
}
| tUMINUS arg
{
result = new_call val[1], :"-@"
}
| arg tPIPE arg
{
result = new_call val[0], :"|", argl(val[2])
}
| arg tCARET arg
{
result = new_call val[0], :"^", argl(val[2])
}
| arg tAMPER2 arg
{
result = new_call val[0], :"&", argl(val[2])
}
| arg tCMP arg
{
result = new_call val[0], :"<=>", argl(val[2])
}
| arg tGT arg
{
result = new_call val[0], :">", argl(val[2])
}
| arg tGEQ arg
{
result = new_call val[0], :">=", argl(val[2])
}
| arg tLT arg
{
result = new_call val[0], :"<", argl(val[2])
}
| arg tLEQ arg
{
result = new_call val[0], :"<=", argl(val[2])
}
| arg tEQ arg
{
result = new_call val[0], :"==", argl(val[2])
}
| arg tEQQ arg
{
result = new_call val[0], :"===", argl(val[2])
}
| arg tNEQ arg
{
val[0] = value_expr val[0] # TODO: port call_op and clean these
val[2] = value_expr val[2]
result = s(:not, new_call(val[0], :"==", argl(val[2])))
}
| arg tMATCH arg
{
result = get_match_node val[0], val[2]
}
| arg tNMATCH arg
{
result = s(:not, get_match_node(val[0], val[2]))
}
| tBANG arg
{
result = s(:not, val[1])
}
| tTILDE arg
{
val[2] = value_expr val[2]
result = new_call val[1], :"~"
}
| arg tLSHFT arg
{
val[0] = value_expr val[0]
val[2] = value_expr val[2]
result = new_call val[0], :"\<\<", argl(val[2])
}
| arg tRSHFT arg
{
val[0] = value_expr val[0]
val[2] = value_expr val[2]
result = new_call val[0], :">>", argl(val[2])
}
| arg tANDOP arg
{
result = logop(:and, val[0], val[2])
}
| arg tOROP arg
{
result = logop(:or, val[0], val[2])
}
| kDEFINED opt_nl arg
{
result = s(:defined, val[2])
}
| arg tEH arg tCOLON arg
{
result = s(:if, val[0], val[2], val[4])
}
| primary
arg_value: arg
{
result = value_expr(val[0])
}
aref_args: none
| command opt_nl
{
warning 'parenthesize argument(s) for future version'
result = s(:array, val[0])
}
| args trailer
{
result = val[0]
}
| args tCOMMA tSTAR arg opt_nl
{
result = arg_concat val[0], val[3]
}
| assocs trailer
{
result = s(:array, s(:hash, *val[0].values))
}
| tSTAR arg opt_nl
{
result = s(:array, s(:splat, val[1]))
}
paren_args: tLPAREN2 none tRPAREN
{
result = val[1]
}
| tLPAREN2 call_args opt_nl tRPAREN
{
result = val[1]
}
| tLPAREN2 block_call opt_nl tRPAREN
{
warning "parenthesize argument(s) for future version"
result = s(:array, val[1])
}
| tLPAREN2 args tCOMMA block_call opt_nl tRPAREN
{
warning "parenthesize argument(s) for future version"
result = val[1].add val[3]
}
opt_paren_args: none
| paren_args
call_args: command
{
warning "parenthesize argument(s) for future version"
result = s(:array, val[0])
}
| args opt_block_arg
{
result = arg_blk_pass val[0], val[1]
}
| args tCOMMA tSTAR arg_value opt_block_arg
{
result = arg_concat val[0], val[3]
result = arg_blk_pass result, val[4]
}
| assocs opt_block_arg
{
result = s(:array, s(:hash, *val[0].values))
result = arg_blk_pass result, val[1]
}
| assocs tCOMMA tSTAR arg_value opt_block_arg
{
result = arg_concat s(:array, s(:hash, *val[0].values)), val[3]
result = arg_blk_pass result, val[4]
}
| args tCOMMA assocs opt_block_arg
{
result = val[0] << s(:hash, *val[2].values)
result = arg_blk_pass result, val[3]
}
| args tCOMMA assocs tCOMMA tSTAR arg opt_block_arg
{
val[0] << s(:hash, *val[2].values)
result = arg_concat val[0], val[5]
result = arg_blk_pass result, val[6]
}
| tSTAR arg_value opt_block_arg
{
result = arg_blk_pass s(:splat, val[1]), val[2]
}
| block_arg
call_args2: arg_value tCOMMA args opt_block_arg
{
args = list_prepend val[0], val[2]
result = arg_blk_pass args, val[3]
}
| arg_value tCOMMA block_arg
{
result = arg_blk_pass val[0], val[2]
}
| arg_value tCOMMA tSTAR arg_value opt_block_arg
{
result = arg_concat s(:array, val[0]), val[3]
result = arg_blk_pass result, val[4]
}
| arg_value tCOMMA args tCOMMA tSTAR arg_value opt_block_arg
{
result = arg_concat s(:array, val[0], s(:hash, *val[2].values)), val[5]
result = arg_blk_pass result, val[6]
}
| assocs opt_block_arg
{
result = s(:array, s(:hash, *val[0].values))
result = arg_blk_pass result, val[1]
}
| assocs tCOMMA tSTAR arg_value opt_block_arg
{
result = s(:array, s(:hash, *val[0].values), val[3])
result = arg_blk_pass result, val[4]
}
| arg_value tCOMMA assocs opt_block_arg
{
result = s(:array, val[0], s(:hash, *val[2].values))
result = arg_blk_pass result, val[3]
}
| arg_value tCOMMA args tCOMMA assocs opt_block_arg
{
arg_value, _, args, _, assocs, opt_block = val
result = s(:array, arg_value).add_all(args)
result.add(s(:hash, *assocs.sexp_body))
result = arg_blk_pass result, opt_block
}
| arg_value tCOMMA assocs tCOMMA tSTAR arg_value opt_block_arg
{
result = arg_concat s(:array, val[0]).add(s(:hash, *val[2].sexp_body)), val[5]
result = arg_blk_pass result, val[6]
}
| arg_value tCOMMA args tCOMMA assocs tCOMMA tSTAR arg_value opt_block_arg
{
result = arg_concat s(:array, val[0]).add_all(val[2]).add(s(:hash, *val[4].values)), val[7]
result = arg_blk_pass result, val[8]
}
| tSTAR arg_value opt_block_arg
{
result = arg_blk_pass s(:splat, val[1]), val[2]
}
| block_arg
command_args: {
result = lexer.cmdarg.stack.dup
lexer.cmdarg.push true
}
open_args
{
lexer.cmdarg.stack.replace val[0]
result = val[1]
}
open_args: call_args
| tLPAREN_ARG
{
lexer.lex_state = :expr_endarg
}
tRPAREN
{
warning "don't put space before argument parentheses"
result = nil
}
| tLPAREN_ARG call_args2
{
lexer.lex_state = :expr_endarg
}
tRPAREN
{
warning "don't put space before argument parentheses"
result = val[1]
}
block_arg: tAMPER arg_value
{
result = s(:block_pass, val[1])
}
opt_block_arg: tCOMMA block_arg
{
result = val[1]
}
| none
args: arg_value
{
result = s(:array, val[0])
}
| args tCOMMA arg_value
{
result = list_append val[0], val[2]
}
mrhs: args tCOMMA arg_value
{
result = val[0] << val[2]
}
| args tCOMMA tSTAR arg_value
{
result = arg_concat val[0], val[3]
}
| tSTAR arg_value
{
result = s(:splat, val[1])
}
primary: literal
| strings
| xstring
| regexp
| words
| qwords
| var_ref
| backref
| tFID
{
result = new_call nil, val[0].to_sym
}
| kBEGIN
{
result = self.lexer.lineno
}
bodystmt kEND
{
unless val[2] then
result = s(:nil)
else
result = s(:begin, val[2])
end
result.line = val[1]
}
| tLPAREN_ARG expr
{
lexer.lex_state = :expr_endarg
}
opt_nl tRPAREN
{
warning "(...) interpreted as grouped expression"
result = val[1]
}
| tLPAREN compstmt tRPAREN
{
result = val[1] || s(:nil)
result.paren = true
}
| primary_value tCOLON2 tCONSTANT
{
result = s(:colon2, val[0], val[2].to_sym)
}
| tCOLON3 tCONSTANT
{
result = s(:colon3, val[1].to_sym)
}
| primary_value tLBRACK2 aref_args tRBRACK
{
result = new_aref val
}
| tLBRACK aref_args tRBRACK
{
result = val[1] || s(:array)
}
| tLBRACE assoc_list tRCURLY
{
result = s(:hash, *val[1].values)
}
| kRETURN
{
result = s(:return)
}
| kYIELD tLPAREN2 call_args tRPAREN
{
result = new_yield val[2]
}
| kYIELD tLPAREN2 tRPAREN
{
result = new_yield
}
| kYIELD
{
result = new_yield
}
| kDEFINED opt_nl tLPAREN2 expr tRPAREN
{
result = s(:defined, val[3])
}
| operation brace_block
{
oper, iter = val[0], val[1]
call = new_call(nil, oper.to_sym)
iter.insert 1, call
result = iter
call.line = iter.line
}
| method_call
| method_call brace_block
{
call, iter = val[0], val[1]
block_dup_check call, iter
iter.insert 1, call
result = iter
}
| kIF expr_value then compstmt if_tail kEND
{
result = new_if val[1], val[3], val[4]
}
| kUNLESS expr_value then compstmt opt_else kEND
{
result = new_if val[1], val[4], val[3]
}
| kWHILE
{
lexer.cond.push true
}
expr_value do
{
lexer.cond.pop
}
compstmt kEND
{
result = new_while val[5], val[2], true
}
| kUNTIL
{
lexer.cond.push true
}
expr_value do
{
lexer.cond.pop
}
compstmt kEND
{
result = new_until val[5], val[2], true
}
| kCASE expr_value opt_terms case_body kEND
{
(_, line), expr, _, body, _ = val
result = new_case expr, body, line
}
| kCASE opt_terms case_body kEND
{
(_, line), _, body, _ = val
result = new_case nil, body, line
}
| kCASE opt_terms kELSE compstmt kEND # TODO: need a test
{
(_, line), _, _, elsebody, _ = val
result = new_case nil, elsebody, line
}
| kFOR for_var kIN
{
lexer.cond.push true
}
expr_value do
{
lexer.cond.pop
}
compstmt kEND
{
result = new_for val[4], val[1], val[7]
}
| kCLASS
{
result = self.lexer.lineno
}
cpath superclass
{
self.comments.push self.lexer.comments
if (in_def || in_single > 0) then
yyerror "class definition in method body"
end
self.env.extend
}
bodystmt kEND
{
result = new_class val
self.env.unextend
self.lexer.comments # we don't care about comments in the body
}
| kCLASS tLSHFT
{
result = self.lexer.lineno
}
expr
{
result = in_def
self.in_def = false
}
term
{
result = in_single
self.in_single = 0
self.env.extend
}
bodystmt kEND
{
result = new_sclass val
self.env.unextend
self.lexer.comments # we don't care about comments in the body
}
| kMODULE
{
result = self.lexer.lineno
}
cpath
{
self.comments.push self.lexer.comments
yyerror "module definition in method body" if
in_def or in_single > 0
self.env.extend
}
bodystmt kEND
{
result = new_module val
self.env.unextend
self.lexer.comments # we don't care about comments in the body
}
| kDEF fname
{
result = self.in_def
self.comments.push self.lexer.comments
self.in_def = true
self.env.extend
}
f_arglist bodystmt kEND
{
in_def = val[2]
result = new_defn val
self.env.unextend
self.in_def = in_def
self.lexer.comments # we don't care about comments in the body
}
| kDEF singleton dot_or_colon
{
self.comments.push self.lexer.comments
lexer.lex_state = :expr_fname
}
fname
{
self.in_single += 1
self.env.extend
lexer.lex_state = :expr_end # force for args
}
f_arglist bodystmt kEND
{
result = new_defs val
self.env.unextend
self.in_single -= 1
self.lexer.comments # we don't care about comments in the body
}
| kBREAK
{
result = s(:break)
}
| kNEXT
{
result = s(:next)
}
| kREDO
{
result = s(:redo)
}
| kRETRY
{
result = s(:retry)
}
primary_value: primary
{
result = value_expr(val[0])
}
then: term
| tCOLON
| kTHEN
| term kTHEN
do: term
| tCOLON
| kDO_COND
if_tail: opt_else
| kELSIF expr_value then compstmt if_tail
{
result = s(:if, val[1], val[3], val[4])
}
opt_else: none
| kELSE compstmt
{
result = val[1]
}
for_var: lhs
| mlhs
{
val[0].delete_at 1 if val[0][1].nil? # HACK
}
block_par: mlhs_item
{
result = s(:array, clean_mlhs(val[0]))
}
| block_par tCOMMA mlhs_item
{
result = list_append val[0], clean_mlhs(val[2])
}
block_var: block_par
{
result = block_var18 val[0], nil, nil
}
| block_par tCOMMA
{
result = block_var18 val[0], nil, nil
}
| block_par tCOMMA tAMPER lhs
{
result = block_var18 val[0], nil, val[3]
}
| block_par tCOMMA tSTAR lhs tCOMMA tAMPER lhs
{
result = block_var18 val[0], val[3], val[6]
}
| block_par tCOMMA tSTAR tCOMMA tAMPER lhs
{
result = block_var18 val[0], s(:splat), val[5]
}
| block_par tCOMMA tSTAR lhs
{
result = block_var18 val[0], val[3], nil
}
| block_par tCOMMA tSTAR
{
result = block_var18 val[0], s(:splat), nil
}
| tSTAR lhs tCOMMA tAMPER lhs
{
result = block_var18 nil, val[1], val[4]
}
| tSTAR tCOMMA tAMPER lhs
{
result = block_var18 nil, s(:splat), val[3]
}
| tSTAR lhs
{
result = block_var18 nil, val[1], nil
}
| tSTAR
{
result = block_var18 nil, s(:splat), nil
}
| tAMPER lhs
{
result = block_var18 nil, nil, val[1]
}
;
opt_block_var: none
| tPIPE tPIPE
{
result = 0
self.lexer.command_start = true
}
| tOROP
{
result = 0
self.lexer.command_start = true
}
| tPIPE block_var tPIPE
{
result = val[1]
self.lexer.command_start = true
}
do_block: kDO_BLOCK
{
self.env.extend :dynamic
result = self.lexer.lineno
}
opt_block_var
{
result = nil # self.env.dynamic.keys
}
compstmt kEND
{
vars = val[2]
body = val[4]
result = new_iter nil, vars, body
result.line = val[1]
self.env.unextend
}
block_call: command do_block
{
block_dup_check val[0], val[1]
result = val[1]
result.insert 1, val[0]
}
| block_call tDOT operation2 opt_paren_args
{
result = new_call val[0], val[2], val[3]
}
| block_call tCOLON2 operation2 opt_paren_args
{
result = new_call val[0], val[2], val[3]
}
method_call: operation
{
result = self.lexer.lineno
}
paren_args
{
result = new_call nil, val[0].to_sym, val[2]
}
| primary_value tDOT operation2 opt_paren_args
{
result = new_call val[0], val[2].to_sym, val[3]
}
| primary_value tCOLON2 operation2 paren_args
{
result = new_call val[0], val[2].to_sym, val[3]
}
| primary_value tCOLON2 operation3
{
result = new_call val[0], val[2].to_sym
}
| kSUPER paren_args
{
result = new_super val[1]
}
| kSUPER
{
result = s(:zsuper)
}
brace_block: tLCURLY
{
self.env.extend :dynamic
result = self.lexer.lineno
}
opt_block_var
{
result = nil # self.env.dynamic.keys
}
compstmt tRCURLY
{
# REFACTOR
args = val[2]
body = val[4]
result = new_iter nil, args, body
self.env.unextend
result.line = val[1]
}
| kDO
{
self.env.extend :dynamic
result = self.lexer.lineno
}
opt_block_var
{
result = nil # self.env.dynamic.keys
}
compstmt kEND
{
args = val[2]
body = val[4]
result = new_iter nil, args, body
self.env.unextend
result.line = val[1]
}
case_body: kWHEN
{
result = self.lexer.lineno
}
when_args then compstmt cases
{
result = new_when(val[2], val[4])
result.line = val[1]
result << val[5] if val[5]
}
when_args: args
| args tCOMMA tSTAR arg_value
{
result = list_append val[0], s(:splat, val[3])
}
| tSTAR arg_value
{
result = s(:array, s(:splat, val[1]))
}
cases: opt_else | case_body
opt_rescue: kRESCUE exc_list exc_var then compstmt opt_rescue
{
klasses, var, body, rest = val[1], val[2], val[4], val[5]
klasses ||= s(:array)
klasses << node_assign(var, s(:gvar, :"$!")) if var
result = new_resbody(klasses, body)
result << rest if rest # UGH, rewritten above
}
|
{
result = nil
}
exc_list: arg_value
{
result = s(:array, val[0])
}
| mrhs
| none
exc_var: tASSOC lhs
{
result = val[1]
}
| none
opt_ensure: kENSURE compstmt
{
if (val[1] != nil) then
result = val[1]
else
result = s(:nil)
end
}
| none
literal: numeric { result = s(:lit, val[0]) }
| symbol { result = s(:lit, val[0]) }
| dsym
strings: string
{
val[0] = s(:dstr, val[0].value) if val[0][0] == :evstr
result = val[0]
}
string: string1
| string string1
{
result = literal_concat val[0], val[1]
}
string1: tSTRING_BEG string_contents tSTRING_END
{
result = val[1]
}
| tSTRING
{
result = new_string val
}
xstring: tXSTRING_BEG xstring_contents tSTRING_END
{
result = new_xstring val[1]
}
regexp: tREGEXP_BEG xstring_contents tREGEXP_END
{
result = new_regexp val
}
words: tWORDS_BEG tSPACE tSTRING_END
{
result = s(:array)
}
| tWORDS_BEG word_list tSTRING_END
{
result = val[1]
}
word_list: none
{
result = s(:array)
}
| word_list word tSPACE
{
word = val[1][0] == :evstr ? s(:dstr, "", val[1]) : val[1]
result = val[0] << word
}
word: string_content
| word string_content
{
result = literal_concat val[0], val[1]
}
qwords: tQWORDS_BEG tSPACE tSTRING_END
{
result = s(:array)
}
| tQWORDS_BEG qword_list tSTRING_END
{
result = val[1]
}
qword_list: none
{
result = s(:array)
}
| qword_list tSTRING_CONTENT tSPACE
{
result = val[0] << s(:str, val[1])
}
string_contents: none
{
result = s(:str, "")
}
| string_contents string_content
{
result = literal_concat(val[0], val[1])
}
xstring_contents: none
{
result = nil
}
| xstring_contents string_content
{
result = literal_concat(val[0], val[1])
}
string_content: tSTRING_CONTENT
{
result = new_string val
}
| tSTRING_DVAR
{
result = lexer.lex_strterm
lexer.lex_strterm = nil
lexer.lex_state = :expr_beg
}
string_dvar
{
lexer.lex_strterm = val[1]
result = s(:evstr, val[2])
}
| tSTRING_DBEG
{
result = [lexer.lex_strterm,
lexer.brace_nest,
lexer.string_nest, # TODO: remove
lexer.cond.store,
lexer.cmdarg.store]
lexer.lex_strterm = nil
lexer.brace_nest = 0
lexer.string_nest = 0
lexer.lex_state = :expr_beg
}
compstmt tRCURLY
{
_, memo, stmt, _ = val
lex_strterm, brace_nest, string_nest, oldcond, oldcmdarg = memo
lexer.lex_strterm = lex_strterm
lexer.brace_nest = brace_nest
lexer.string_nest = string_nest
lexer.cond.restore oldcond
lexer.cmdarg.restore oldcmdarg
case stmt
when Sexp then
case stmt[0]
when :str, :dstr, :evstr then
result = stmt
else
result = s(:evstr, stmt)
end
when nil then
result = s(:evstr)
else
raise "unknown string body: #{stmt.inspect}"
end
}
string_dvar: tGVAR { result = s(:gvar, val[0].to_sym) }
| tIVAR { result = s(:ivar, val[0].to_sym) }
| tCVAR { result = s(:cvar, val[0].to_sym) }
| backref
symbol: tSYMBEG sym
{
lexer.lex_state = :expr_end
result = val[1].to_sym
}
| tSYMBOL
{
result = val[0].to_sym
}
sym: fname | tIVAR | tGVAR | tCVAR
dsym: tSYMBEG xstring_contents tSTRING_END
{
lexer.lex_state = :expr_end
result = val[1]
yyerror "empty symbol literal" if
result.nil? or result.empty?
case result[0]
when :dstr then
result[0] = :dsym
when :str then
result = s(:lit, result.last.to_sym)
else
result = s(:dsym, "", result)
end
}
numeric: tINTEGER
| tFLOAT
| tUMINUS_NUM tINTEGER =tLOWEST
{
result = -val[1] # TODO: pt_testcase
}
| tUMINUS_NUM tFLOAT =tLOWEST
{
result = -val[1] # TODO: pt_testcase
}
variable: tIDENTIFIER
| tIVAR
| tGVAR
| tCONSTANT
| tCVAR
| kNIL { result = s(:nil) }
| kSELF { result = s(:self) }
| kTRUE { result = s(:true) }
| kFALSE { result = s(:false) }
| k__FILE__ { result = s(:str, self.file) }
| k__LINE__ { result = s(:lit, lexer.lineno) }
var_ref: variable
{
var = val[0]
result = Sexp === var ? var : self.gettable(var)
}
var_lhs: variable
{
result = assignable val[0]
}
backref: tNTH_REF { result = s(:nth_ref, val[0]) }
| tBACK_REF { result = s(:back_ref, val[0]) }
superclass: term
{
result = nil
}
| tLT
{
lexer.lex_state = :expr_beg
}
expr_value term
{
result = val[2]
}
| error term
{
yyerrok
result = nil
}
f_arglist: tLPAREN2 f_args opt_nl tRPAREN
{
result = val[1]
lexer.lex_state = :expr_beg
self.lexer.command_start = true
}
| f_args term
{
result = val[0]
}
f_args: f_arg tCOMMA f_optarg tCOMMA f_rest_arg opt_f_block_arg
{
result = args val
}
| f_arg tCOMMA f_optarg opt_f_block_arg
{
result = args val
}
| f_arg tCOMMA f_rest_arg opt_f_block_arg
{
result = args val
}
| f_arg opt_f_block_arg
{
result = args val
}
| f_optarg tCOMMA f_rest_arg opt_f_block_arg
{
result = args val
}
| f_optarg opt_f_block_arg
{
result = args val
}
| f_rest_arg opt_f_block_arg
{
result = args val
}
| f_block_arg
{
result = args val
}
|
{
result = args val
}
f_norm_arg: tCONSTANT
{
yyerror "formal argument cannot be a constant"
}
| tIVAR
{
yyerror "formal argument cannot be an instance variable"
}
| tGVAR
{
yyerror "formal argument cannot be a global variable"
}
| tCVAR
{
yyerror "formal argument cannot be a class variable"
}
| tIDENTIFIER
{
identifier = val[0].to_sym
self.env[identifier] = :lvar
result = val[0]
}
f_arg: f_norm_arg
{
result = s(:args)
result << val[0].to_sym
}
| f_arg tCOMMA f_norm_arg
{
val[0] << val[2].to_sym
result = val[0]
}
f_opt: tIDENTIFIER tEQL arg_value
{
result = assignable val[0], val[2]
# TODO: detect duplicate names
}
f_optarg: f_opt
{
result = s(:block, val[0])
}
| f_optarg tCOMMA f_opt
{
result = block_append val[0], val[2]
}
restarg_mark: tSTAR2 | tSTAR
f_rest_arg: restarg_mark tIDENTIFIER
{
# TODO: differs from parse.y - needs tests
name = val[1].to_sym
assignable name
result = :"*#{name}"
}
| restarg_mark
{
name = :"*"
self.env[name] = :lvar
result = name
}
blkarg_mark: tAMPER2 | tAMPER
f_block_arg: blkarg_mark tIDENTIFIER
{
identifier = val[1].to_sym
self.env[identifier] = :lvar
result = s(:block_arg, identifier.to_sym)
}
opt_f_block_arg: tCOMMA f_block_arg
{
result = val[1]
}
|
{
result = nil
}
singleton: var_ref
| tLPAREN2
{
lexer.lex_state = :expr_beg
}
expr opt_nl tRPAREN
{
result = val[2]
yyerror "Can't define single method for literals." if
result[0] == :lit
}
assoc_list: none # [!nil]
{
result = s(:array)
}
| assocs trailer # [!nil]
{
result = val[0]
}
| args trailer
{
size = val[0].size
if (size % 2 != 1) then # != 1 because of leading :array
yyerror "Odd number (#{size}) list for Hash. #{val[0].inspect}"
end
result = val[0]
}
assocs: assoc
| assocs tCOMMA assoc
{
list = val[0].dup
more = val[2][1..-1]
list.push(*more) unless more.empty?
result = list
}
assoc: arg_value tASSOC arg_value
{
result = s(:array, val[0], val[2])
}
operation: tIDENTIFIER | tCONSTANT | tFID
operation2: tIDENTIFIER | tCONSTANT | tFID | op
operation3: tIDENTIFIER | tFID | op
dot_or_colon: tDOT | tCOLON2
opt_terms: | terms
opt_nl: | tNL
trailer: | tNL | tCOMMA
term: tSEMI { yyerrok }
| tNL
terms: term
| terms tSEMI { yyerrok }
none: { result = nil }
end
---- inner
require "ruby_lexer"
require "ruby_parser_extras"
# :stopdoc:
# Local Variables: **
# racc-token-length-max:14 **
# End: **
|