diff options
Diffstat (limited to 'parse.y')
| -rw-r--r-- | parse.y | 82 |
1 files changed, 59 insertions, 23 deletions
@@ -6,7 +6,7 @@ $Date$ created at: Fri May 28 18:02:42 JST 1993 - Copyright (C) 1993-1996 Yukihiro Matsumoto + Copyright (C) 1993-1998 Yukihiro Matsumoto ************************************************/ @@ -158,6 +158,8 @@ static void top_local_setup(); kDEFINED klBEGIN klEND + k__LINE__ + k__FILE__ %token <id> IDENTIFIER FID GVAR IVAR CONSTANT %token <val> INTEGER FLOAT STRING XSTRING REGEXP @@ -175,8 +177,8 @@ static void top_local_setup(); %type <id> variable symbol operation assoc_kw %type <id> cname fname op rest_arg %type <num> f_arg -%token oUPLUS /* unary+ */ -%token MINUS /* unary- */ +%token UPLUS /* unary+ */ +%token UMINUS /* unary- */ %token POW /* ** */ %token CMP /* <=> */ %token EQ /* == */ @@ -208,6 +210,7 @@ static void top_local_setup(); %right kNOT %nonassoc kDEFINED %right '=' OP_ASGN +%right '?' ':' %nonassoc DOT2 DOT3 %left OROP %left ANDOP @@ -458,10 +461,6 @@ lhs : variable { $$ = attrset($1, $3, 0); } - | primary '.' CONSTANT - { - $$ = attrset($1, $3, 0); - } | backref { backref_error($1); @@ -696,6 +695,12 @@ arg : variable '=' arg in_defined = 0; $$ = NEW_DEFINED($4); } + | arg '?' arg ':' arg + { + value_expr($1); + $$ = NEW_IF(cond($1), $3, $5); + fixpos($$, $1); + } | primary { $$ = $1; @@ -977,9 +982,6 @@ primary : literal } | kCLASS LSHFT expr term { - if (cur_mid || in_single) - yyerror("class definition in method body"); - class_nest++; cref_push(); local_push(); @@ -1236,6 +1238,8 @@ variable : IDENTIFIER | kSELF {$$ = kSELF;} | kTRUE {$$ = kTRUE;} | kFALSE {$$ = kFALSE;} + | k__FILE__ {$$ = k__FILE__;} + | k__LINE__ {$$ = k__LINE__;} var_ref : variable { @@ -1257,7 +1261,7 @@ superclass : term { $$ = $3; } - | error term {yyerrok;} + | error term {yyerrok; $$ = 0} f_arglist : '(' f_args ')' { @@ -1988,6 +1992,15 @@ parse_qstring(term) return STRING; } +static int +parse_quotedword(term) + int term; +{ + if (parse_qstring(term) == 0) return 0; + yylval.node = NEW_CALL(NEW_STR(yylval.val), rb_intern("split"), 0); + return DSTRING; +} + char *strdup(); static int @@ -2041,6 +2054,7 @@ here_document(term) free(eos); return 0; } + sourceline++; if (strncmp(eos, RSTRING(line)->ptr, len) == 0 && (RSTRING(line)->ptr[len] == '\n' || RSTRING(line)->ptr[len] == '\r')) { @@ -2049,7 +2063,6 @@ here_document(term) lex_pbeg = lex_p = RSTRING(line)->ptr; lex_pend = lex_p + RSTRING(line)->len; - sourceline++; switch (parse_string(term, '\n')) { case STRING: case XSTRING: @@ -2298,7 +2311,20 @@ retry: return parse_qstring(c); case '?': - if ((c = nextc()) == '\\') { + if (lex_state == EXPR_END) { + Warning("a?b:c is undocumented feature ^^;;;"); + lex_state = EXPR_BEG; + return '?'; + } + c = nextc(); + if (lex_state == EXPR_ARG && space_seen && isspace(c)){ + pushback(c); + arg_ambiguous(); + lex_state = EXPR_BEG; + Warning("a?b:c is undocumented feature ^^;;;"); + return '?'; + } + if (c == '\\') { c = read_escape(); } c &= 0xff; @@ -2379,6 +2405,7 @@ retry: return OP_ASGN; } if (c == '>') { + Warning("-> is undocumented feature ^^;;;"); lex_state = EXPR_BEG; return KW_ASSOC; } @@ -2544,8 +2571,10 @@ retry: return COLON2; } pushback(c); - if (isspace(c)) + if (lex_state == EXPR_END || isspace(c)) { + lex_state = EXPR_BEG; return ':'; + } lex_state = EXPR_FNAME; return SYMBEG; @@ -2579,9 +2608,6 @@ retry: return c; case ',': - lex_state = EXPR_BEG; - return c; - case ';': lex_state = EXPR_BEG; return c; @@ -2600,11 +2626,6 @@ retry: c = LPAREN; lex_state = EXPR_BEG; } - else if (lex_state == EXPR_ARG && space_seen) { - arg_ambiguous(); - c = LPAREN; - lex_state = EXPR_BEG; - } else { lex_state = EXPR_BEG; } @@ -2686,6 +2707,9 @@ retry: case 'q': return parse_qstring(term); + case 'w': + return parse_quotedword(term); + case 'x': return parse_string('`', term); @@ -2693,7 +2717,7 @@ retry: return parse_regx(term); default: - yyerror("unknown type of string `%c'", c); + yyerror("unknown type of %string"); return 0; } } @@ -3219,6 +3243,12 @@ gettable(id) else if (id == kFALSE) { return NEW_FALSE(); } + else if (id == k__FILE__) { + return NEW_STR(str_new2(sourcefile)); + } + else if (id == k__LINE__) { + return NEW_LIT(INT2FIX(sourceline)); + } else if (is_local_id(id)) { if (local_id(id)) return NEW_LVAR(id); if (dyna_var_defined(id)) return NEW_DVAR(id); @@ -3257,6 +3287,12 @@ assignable(id, val) else if (id == kFALSE) { yyerror("Can't assign to false"); } + else if (id == k__FILE__) { + yyerror("Can't assign to __FILE__"); + } + else if (id == k__LINE__) { + yyerror("Can't assign to __LINE__"); + } else if (is_local_id(id)) { if (local_id(id) || !dyna_in_block()) { lhs = NEW_LASGN(id, val); |