|
|
| version 1.90, 2001/03/11 09:30:45 | version 1.106.2.1, 2001/03/20 17:52:39 |
|---|---|
| Line 1 | Line 1 |
| /* | /** @file |
| Parser | Parser: compiler(lexical parser and grammar). |
| Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) | Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) |
| Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf) | Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf) |
| $Id$ | $Id$ |
| */ | */ |
| /* | /** |
| TODO.parser4: | @todo parser4: |
| cache compiled code from request to request. to do that... | - cache compiled code from request to request. to do that... |
| 1: make method definitions, @CLASS, @BASE, @USE instructions, | -#: make method definitions, @CLASS, @BASE, @USE instructions, |
| which would be executed afterwards, and actions | which would be executed afterwards, and actions |
| now performed at compile time would be delayed to run time. | now performed at compile time would be delayed to run time. |
| 2: make cache expiration on time and on disk-change of class source | -#: make cache expiration on time and on disk-change of class source |
| 3: in apache use subpools for compiled class storage | -#: in apache use subpools for compiled class storage |
| 4: in iis make up specialized Pool object for that | -#: in iis make up specialized Pool object for that |
| */ | */ |
| %{ | %{ |
| Line 22 | Line 24 |
| #define YYPARSE_PARAM pc | #define YYPARSE_PARAM pc |
| #define YYLEX_PARAM pc | #define YYLEX_PARAM pc |
| #define YYDEBUG 1 | #define YYDEBUG 1 |
| #define YYERROR_VERBOSE | #define YYERROR_VERBOSE 1 |
| #define yyerror(msg) real_yyerror((parse_control *)pc, msg) | #define yyerror(msg) real_yyerror((parse_control *)pc, msg) |
| #define YYPRINT(file, type, value) yyprint(file, type, value) | #define YYPRINT(file, type, value) yyprint(file, type, value) |
| Line 35 | Line 37 |
| #include "pa_request.h" | #include "pa_request.h" |
| #include "pa_vobject.h" | #include "pa_vobject.h" |
| #include "pa_vdouble.h" | #include "pa_vdouble.h" |
| #include "core.h" | #include "pa_globals.h" |
| #define SELF_ELEMENT_NAME "self" | #define SELF_ELEMENT_NAME "self" |
| #define USE_CONTROL_METHOD_NAME "USE" | #define USE_CONTROL_METHOD_NAME "USE" |
| Line 50 int yylex(YYSTYPE *lvalp, void *pc); | Line 52 int yylex(YYSTYPE *lvalp, void *pc); |
| #define POOL *PC->pool | #define POOL *PC->pool |
| #undef NEW | #undef NEW |
| #define NEW new(POOL) | #define NEW new(POOL) |
| #ifndef DOXYGEN | |
| %} | %} |
| %pure_parser | %pure_parser |
| Line 79 int yylex(YYSTYPE *lvalp, void *pc); | Line 82 int yylex(YYSTYPE *lvalp, void *pc); |
| %token DEF "def" | %token DEF "def" |
| %token IN "in" | %token IN "in" |
| %token FEXISTS "-f" | %token FEXISTS "-f" |
| %token IS "is" | |
| /* logical */ | /* logical */ |
| %left "is" | |
| %left "lt" "gt" "le" "ge" | %left "lt" "gt" "le" "ge" |
| %left "eq" "ne" | %left "eq" "ne" |
| %left '<' '>' "<=" ">=" "##" | %left '<' '>' "<=" ">=" "##" |
| Line 108 all: | Line 113 all: |
| 0, 0, /*min, max numbered_params_count*/ | 0, 0, /*min, max numbered_params_count*/ |
| 0/*param_names*/, 0/*local_names*/, | 0/*param_names*/, 0/*local_names*/, |
| $1/*parser_code*/, 0/*native_code*/); | $1/*parser_code*/, 0/*native_code*/); |
| PC->vclass->add_method(*main_method_name, method); | PC->cclass->add_method(*main_method_name, method); |
| } | } |
| | methods; | | methods; |
| Line 128 control_method: '@' STRING '\n' | Line 133 control_method: '@' STRING '\n' |
| YYERROR; | YYERROR; |
| } | } |
| if(command==CLASS_NAME) { | if(command==CLASS_NAME) { |
| if(PC->vclass!=&PC->request->root_class) { // already changed from default? | if(PC->cclass!=&PC->request->ROOT) { // already changed from default? |
| strcpy(PC->error, "class already have a name '"); | strcpy(PC->error, "class already have a name '"); |
| strncat(PC->error, PC->vclass->name().cstr(), 100); | strncat(PC->error, PC->cclass->name().cstr(), 100); |
| strcat(PC->error, "'"); | strcat(PC->error, "'"); |
| YYERROR; | YYERROR; |
| } | } |
| Line 138 control_method: '@' STRING '\n' | Line 143 control_method: '@' STRING '\n' |
| // new class' name | // new class' name |
| const String *name=SLA2S(strings_code); | const String *name=SLA2S(strings_code); |
| // creating the class | // creating the class |
| PC->vclass=NEW VClass(POOL); | PC->cclass=NEW VClass(POOL); |
| PC->vclass->set_name(*name); | PC->cclass->set_name(*name); |
| // defaulting base. may change with @BASE | // defaulting base. may change with @BASE |
| PC->vclass->set_base(PC->request->root_class); | PC->cclass->set_base(PC->request->ROOT); |
| // append to request's classes | // append to request's classes |
| PC->request->classes_array()+=PC->vclass; | PC->request->classes().put(*name, PC->cclass); |
| PC->request->classes().put(*name, PC->vclass); | |
| } else { | } else { |
| strcpy(PC->error, "@"CLASS_NAME" must contain sole name"); | strcpy(PC->error, "@"CLASS_NAME" must contain sole name"); |
| YYERROR; | YYERROR; |
| Line 154 control_method: '@' STRING '\n' | Line 158 control_method: '@' STRING '\n' |
| for(int i=0; i<strings_code->size(); i+=2) { | for(int i=0; i<strings_code->size(); i+=2) { |
| String file(*SLA2S(strings_code, i)); | String file(*SLA2S(strings_code, i)); |
| file.APPEND_CONST(".p"); | file.APPEND_CONST(".p"); |
| PC->request->use(file.cstr()); | PC->request->use_file(file.cstr()); |
| } | } |
| } else if(command==BASE_NAME) { | } else if(command==BASE_NAME) { |
| if(PC->vclass->base()!=&PC->request->root_class) { // already changed from default? | if(PC->cclass->base()!=&PC->request->ROOT) { // already changed from default? |
| strcpy(PC->error, "class already have a base '"); | strcpy(PC->error, "class already have a base '"); |
| strncat(PC->error, PC->vclass->base()->name().cstr(), 100); | strncat(PC->error, PC->cclass->base()->name().cstr(), 100); |
| strcat(PC->error, "'"); | strcat(PC->error, "'"); |
| YYERROR; | YYERROR; |
| } | } |
| Line 173 control_method: '@' STRING '\n' | Line 177 control_method: '@' STRING '\n' |
| strcat(PC->error, ": undefined class in @"BASE_NAME); | strcat(PC->error, ": undefined class in @"BASE_NAME); |
| YYERROR; | YYERROR; |
| } | } |
| PC->vclass->set_base(*base); | PC->cclass->set_base(*base); |
| } else { | } else { |
| strcpy(PC->error, "@"BASE_NAME" must contain sole name"); | strcpy(PC->error, "@"BASE_NAME" must contain sole name"); |
| YYERROR; | YYERROR; |
| } | } |
| } else { | } else { |
| strcpy(PC->error, command.cstr()); | strcpy(PC->error, "'"); |
| strcat(PC->error, ": invalid special name. valid names are " | strncat(PC->error, command.cstr(), MAX_STRING/2); |
| CLASS_NAME", "USE_CONTROL_METHOD_NAME" and "BASE_NAME); | strcat(PC->error, "' invalid special name. valid names are " |
| "'"CLASS_NAME"', '"USE_CONTROL_METHOD_NAME"' and '"BASE_NAME"'"); | |
| YYERROR; | YYERROR; |
| } | } |
| } | } |
| Line 215 code_method: '@' STRING bracketed_maybe_ | Line 220 code_method: '@' STRING bracketed_maybe_ |
| 0, 0/*min,max numbered_params_count*/, | 0, 0/*min,max numbered_params_count*/, |
| params_names, locals_names, | params_names, locals_names, |
| $7, 0); | $7, 0); |
| PC->vclass->add_method(*name, method); | PC->cclass->add_method(*name, method); |
| }; | }; |
| maybe_bracketed_strings: empty | bracketed_maybe_strings; | maybe_bracketed_strings: empty | bracketed_maybe_strings; |
| Line 237 action: get | put | with | call; | Line 242 action: get | put | with | call; |
| get: get_value { | get: get_value { |
| $$=$1; /* stack: resulting value */ | $$=$1; /* stack: resulting value */ |
| O($$, OP_WRITE); /* value=pop; wcontext.write(value) */ | O($$, OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */ |
| }; | }; |
| get_value: '$' get_name_value { $$=$2 } | get_value: '$' get_name_value { $$=$2 } |
| get_name_value: name_without_curly_rdive EON | name_in_curly_rdive; | get_name_value: name_without_curly_rdive EON | name_in_curly_rdive; |
| Line 330 codes__excluding_sole_str_literal: actio | Line 335 codes__excluding_sole_str_literal: actio |
| call: call_value { | call: call_value { |
| $$=$1; /* stack: value */ | $$=$1; /* stack: value */ |
| O($$, OP_WRITE); /* value=pop; wcontext.write(value) */ | O($$, OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */ |
| }; | }; |
| call_value: '^' call_name store_params EON { /* ^field.$method{vasya} */ | call_value: '^' call_name store_params EON { /* ^field.$method{vasya} */ |
| $$=$2; /* with_xxx,diving code; stack: context,method_junction */ | $$=$2; /* with_xxx,diving code; stack: context,method_junction */ |
| Line 349 store_param: | Line 354 store_param: |
| ; | ; |
| store_square_param: '[' store_code_param_parts ']' {$$=$2}; | store_square_param: '[' store_code_param_parts ']' {$$=$2}; |
| store_round_param: '(' store_expr_param_parts ')' {$$=$2}; | store_round_param: '(' store_expr_param_parts ')' {$$=$2}; |
| store_curly_param: '{' maybe_codes '}' { | store_curly_param: '{' store_curly_param_parts '}' {$$=$2}; |
| $$=N(POOL); | |
| PCA($$, $2); | |
| }; | |
| store_code_param_parts: | store_code_param_parts: |
| store_code_param_part | store_code_param_part |
| | store_code_param_parts ';' store_code_param_part { $$=$1; P($$, $3) } | | store_code_param_parts ';' store_code_param_part { $$=$1; P($$, $3) } |
| Line 361 store_expr_param_parts: | Line 363 store_expr_param_parts: |
| store_expr_param_part | store_expr_param_part |
| | store_expr_param_parts ';' store_expr_param_part { $$=$1; P($$, $3) } | | store_expr_param_parts ';' store_expr_param_part { $$=$1; P($$, $3) } |
| ; | ; |
| store_curly_param_parts: | |
| store_curly_param_part | |
| | store_curly_param_parts ';' store_curly_param_part { $$=$1; P($$, $3) } | |
| ; | |
| store_code_param_part: | store_code_param_part: |
| empty /* optimized [] case */ | empty /* optimized [] case */ |
| | STRING { /* optimized [STRING] case */ | | STRING { /* optimized [STRING] case */ |
| Line 374 store_code_param_part: | Line 380 store_code_param_part: |
| ; | ; |
| store_expr_param_part: write_expr_value { | store_expr_param_part: write_expr_value { |
| $$=N(POOL); | $$=N(POOL); |
| PEA($$, $1); | |
| }; | |
| store_curly_param_part: maybe_codes { | |
| $$=N(POOL); | |
| PCA($$, $1); | PCA($$, $1); |
| }; | }; |
| write_expr_value: expr_value { | write_expr_value: expr_value { |
| $$=$1; | $$=$1; |
| O($$, OP_WRITE); | O($$, OP_WRITE_EXPR_RESULT); |
| }; | }; |
| /* name */ | /* name */ |
| Line 412 name_expr_with_subvar_value: STRING subv | Line 422 name_expr_with_subvar_value: STRING subv |
| $$=N(POOL); | $$=N(POOL); |
| O($$, OP_CREATE_EWPOOL); | O($$, OP_CREATE_EWPOOL); |
| P($$, $1); | P($$, $1); |
| O($$, OP_WRITE); | O($$, OP_WRITE_VALUE); |
| P($$, $2); | P($$, $2); |
| O($$, OP_REDUCE_EWPOOL); | O($$, OP_REDUCE_EWPOOL); |
| }; | }; |
| Line 446 with: '$' name_without_curly_rdive '{' c | Line 456 with: '$' name_without_curly_rdive '{' c |
| O($$, OP_CREATE_RWPOOL); | O($$, OP_CREATE_RWPOOL); |
| P($$, $4); | P($$, $4); |
| O($$, OP_REDUCE_RWPOOL); | O($$, OP_REDUCE_RWPOOL); |
| O($$, OP_WRITE); | O($$, OP_WRITE_VALUE); |
| }; | }; |
| /* expr */ | /* expr */ |
| Line 492 expr: | Line 502 expr: |
| | expr "ge" expr { $$=$1; P($$, $3); O($$, OP_STR_GE) } | | expr "ge" expr { $$=$1; P($$, $3); O($$, OP_STR_GE) } |
| | expr "eq" expr { $$=$1; P($$, $3); O($$, OP_STR_EQ) } | | expr "eq" expr { $$=$1; P($$, $3); O($$, OP_STR_EQ) } |
| | expr "ne" expr { $$=$1; P($$, $3); O($$, OP_STR_NE) } | | expr "ne" expr { $$=$1; P($$, $3); O($$, OP_STR_NE) } |
| | expr "is" expr { $$=$1; P($$, $3); O($$, OP_IS) } | |
| ; | ; |
| string_inside_quotes_value: maybe_codes { | string_inside_quotes_value: maybe_codes { |
| Line 504 string_inside_quotes_value: maybe_codes | Line 515 string_inside_quotes_value: maybe_codes |
| /* basics */ | /* basics */ |
| write_string: STRING { | write_string: STRING { |
| // optimized from OP_STRING+OP_WRITE to OP_STRING__WRITE | // optimized from OP_STRING+OP_WRITE_VALUE to OP_STRING__WRITE |
| change_string_literal_to_write_string_literal($$=$1) | change_string_literal_to_write_string_literal($$=$1) |
| }; | }; |
| Line 512 empty_string_value: /* empty */ { $$=VL( | Line 523 empty_string_value: /* empty */ { $$=VL( |
| empty: /* empty */ { $$=N(POOL) }; | empty: /* empty */ { $$=N(POOL) }; |
| %% | %% |
| #endif | |
| /* | /* |
| 000$111(2222)00 | 000$111(2222)00 |
| Line 542 int yylex(YYSTYPE *lvalp, void *pc) { | Line 554 int yylex(YYSTYPE *lvalp, void *pc) { |
| return result; | return result; |
| } | } |
| char *begin=PC->source; | const char *begin=PC->source; |
| char *end; | const char *end; |
| int begin_line=PC->line; | int begin_line=PC->line; |
| int skip_analized=0; | int skip_analized=0; |
| while(true) { | while(true) { |
| Line 741 int yylex(YYSTYPE *lvalp, void *pc) { | Line 753 int yylex(YYSTYPE *lvalp, void *pc) { |
| break; | break; |
| case 'i': | case 'i': |
| if(end==begin) // right after whitespace | if(end==begin) // right after whitespace |
| if(PC->source[0]=='n') { // in | switch(PC->source[0]) { |
| skip_analized=1; | case 'n': |
| result=IN; | { // in |
| goto break2; | skip_analized=1; |
| result=IN; | |
| goto break2; | |
| } | |
| case 's': | |
| { // is | |
| skip_analized=1; | |
| result=IS; | |
| goto break2; | |
| } | |
| } | } |
| break; | break; |
| case 'd': | case 'd': |
| Line 775 int yylex(YYSTYPE *lvalp, void *pc) { | Line 796 int yylex(YYSTYPE *lvalp, void *pc) { |
| if(PC->ls==LS_EXPRESSION_VAR_NAME) { | if(PC->ls==LS_EXPRESSION_VAR_NAME) { |
| // name in expr ends also before binary operators | // name in expr ends also before binary operators |
| switch(c) { | switch(c) { |
| case '+': case '-': case '*': case '/': case '%': | case '-': |
| case '&': case '|': | |
| case '=': case '!': | |
| pop_LS(PC); | pop_LS(PC); |
| PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; } | PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; } |
| result=EON; | result=EON; |
| Line 790 int yylex(YYSTYPE *lvalp, void *pc) { | Line 809 int yylex(YYSTYPE *lvalp, void *pc) { |
| case ';': | case ';': |
| case ']': case '}': case ')': case '"': | case ']': case '}': case ')': case '"': |
| case '<': case '>': // these stand for HTML brackets and expression binary ops | case '<': case '>': // these stand for HTML brackets and expression binary ops |
| case '+': case '*': case '/': case '%': | |
| case '&': case '|': | |
| case '=': case '!': | |
| // common delimiters | |
| case '\'': case ',': | |
| pop_LS(PC); | pop_LS(PC); |
| PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; } | PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; } |
| result=EON; | result=EON; |
| Line 924 int yylex(YYSTYPE *lvalp, void *pc) { | Line 948 int yylex(YYSTYPE *lvalp, void *pc) { |
| case '^': | case '^': |
| push_LS(PC, LS_METHOD_NAME); | push_LS(PC, LS_METHOD_NAME); |
| RC; | RC; |
| case ';': // param delim | |
| RC; | |
| case '}': | case '}': |
| if(--lexical_brackets_nestage==0) { | if(--lexical_brackets_nestage==0) { |
| PC->ls=LS_METHOD_AFTER; | PC->ls=LS_METHOD_AFTER; |
| Line 990 break2: | Line 1016 break2: |
| int real_yyerror(parse_control *pc, char *s) /* Called by yyparse on error */ | int real_yyerror(parse_control *pc, char *s) /* Called by yyparse on error */ |
| { | { |
| //fprintf(stderr, "[%s]\n", s); | |
| strncpy(pc->error, s, MAX_STRING); // TODO: перепроверить с треклятым последним байтом | strncpy(pc->error, s, MAX_STRING); // TODO: перепроверить с треклятым последним байтом |
| return 1; | return 1; |
| } | } |