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1.32 paf 1: /** @file
1.33 paf 2: Parser: compiler support helper functions decls.
3:
1.82 misha 4: Copyright (c) 2001-2009 ArtLebedev Group (http://www.artlebedev.com)
1.58 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.1 paf 6: */
7:
8: #ifndef COMPILE_TOOLS
9: #define COMPILE_TOOLS
1.62 paf 10:
1.92 ! misha 11: static const char * const IDENT_COMPILE_TOOLS_H="$Date: 2009-05-23 06:41:11 $";
1.1 paf 12:
1.39 paf 13: #include "pa_opcode.h"
1.1 paf 14: #include "pa_types.h"
1.10 paf 15: #include "pa_vstring.h"
1.14 paf 16: #include "pa_request.h"
1.1 paf 17:
1.68 paf 18: /// used to track source column number
19: #define TAB_SIZE 8
20:
1.1 paf 21: enum lexical_state {
1.48 parser 22: LS_USER, LS_NAME_SQUARE_PART,
1.65 paf 23: LS_USER_COMMENT,
1.7 paf 24: LS_DEF_NAME,
25: LS_DEF_PARAMS,
26: LS_DEF_LOCALS,
27: LS_DEF_COMMENT,
1.18 paf 28: LS_DEF_SPECIAL_BODY,
1.42 parser 29: LS_EXPRESSION_STRING_QUOTED,
30: LS_EXPRESSION_STRING_APOSTROFED,
1.48 parser 31: LS_EXPRESSION_VAR_NAME_WITH_COLON, LS_EXPRESSION_VAR_NAME_WITHOUT_COLON,
1.65 paf 32: LS_EXPRESSION_COMMENT,
1.48 parser 33: LS_VAR_NAME_SIMPLE_WITH_COLON, LS_VAR_NAME_SIMPLE_WITHOUT_COLON,
1.1 paf 34: LS_VAR_NAME_CURLY,
1.22 paf 35: LS_VAR_ROUND,
1.18 paf 36: LS_VAR_SQUARE,
1.1 paf 37: LS_VAR_CURLY,
38: LS_METHOD_NAME,
1.18 paf 39: LS_METHOD_SQUARE,
1.1 paf 40: LS_METHOD_CURLY,
1.22 paf 41: LS_METHOD_ROUND,
1.1 paf 42: LS_METHOD_AFTER
43: };
1.68 paf 44:
45: struct Pos {
1.73 paf 46: int line;
47: int col;
48: Pos(int aline, int acol): line(aline), col(acol) {}
1.68 paf 49: Pos(): line(0), col(0) {}
50:
51: void clear() { line=col=0; }
52: operator bool() { return col!=0; }
53: };
54:
1.38 paf 55: /// compiler status
1.68 paf 56: class Parse_control {
57: const String* main_alias;
58: uint last_line_end_col;
59: public:
60: const String& alias_method(const String& name);
1.38 paf 61: //@{
62: /// @name input
1.68 paf 63: Request& request;
64: VStateless_class* cclass;
1.79 misha 65: VStateless_class* cclass_new;
1.78 misha 66: ArrayClass* cclasses;
1.68 paf 67: const char* source;
68: uint file_no;
69: Pos pos;
1.38 paf 70: //@}
71: //@{
72: /// @name state; initially
1.45 parser 73: bool trim_bof;
1.38 paf 74: int pending_state; ///< i=0
1.69 paf 75: String::Body string; ///< lexical string accumulator
1.68 paf 76: Pos string_start;
1.1 paf 77:
78: #define MAX_LEXICAL_STATES 100
1.38 paf 79: enum lexical_state ls; ///< =LS_USER;
1.54 paf 80: int ls_sp; ///< =0
81: enum lexical_state ls_stack[MAX_LEXICAL_STATES];
1.38 paf 82: int brackets_nestages[MAX_LEXICAL_STATES]; ///< brackets nestage on each state
1.46 parser 83:
1.56 paf 84: bool in_call_value;
1.74 paf 85: bool explicit_result;
1.79 misha 86: bool append;
1.38 paf 87: //@}
1.1 paf 88:
1.36 paf 89: /// output: filled input 'methods' and 'error' if any
1.5 paf 90: char error[MAX_STRING];
1.68 paf 91:
92: Parse_control(Request& arequest,
93: VStateless_class* aclass,
94: const char* asource, const String* amain_alias,
1.73 paf 95: uint afile_no,
96: int line_no_offset):
1.70 paf 97: main_alias(amain_alias),
98: last_line_end_col(0),
99:
1.68 paf 100: request(arequest), // input
101:
102: // we were told the class to compile to?
103: cclass(aclass), // until changed with @CLASS would consider operators loading
1.79 misha 104: cclass_new(0),
1.78 misha 105: cclasses(new ArrayClass(1)),
1.70 paf 106: source(asource),
1.68 paf 107: file_no(afile_no),
1.73 paf 108: pos(line_no_offset, 0),
1.68 paf 109:
110: // initialize state
111: trim_bof(true),
112: pending_state(0),
113: ls(LS_USER),
114: ls_sp(0),
1.74 paf 115: in_call_value(false),
1.79 misha 116: explicit_result(false),
1.83 misha 117: append(false) {
1.78 misha 118:
119: *cclasses+=aclass;
120: }
1.68 paf 121:
1.79 misha 122: void class_add(){
123: if(cclass_new){
124: cclass=cclass_new;
125: // append to request's classes
126: request.classes().put(cclass->name(), cclass);
127: *cclasses+=cclass;
128: cclass_new=0;
129: append=false;
130: }
131: }
132:
1.81 misha 133: VStateless_class* get_existed_class(VStateless_class* aclass){
134: if(aclass){
135: if(Value* class_value=request.classes().get(aclass->name())){
136: return class_value->get_class();
1.79 misha 137: }
138: }
1.81 misha 139: return 0;
140: }
141:
142: bool reuse_existed_class(VStateless_class* aclass){
143: if(aclass->is_partial()){
144: cclass=aclass;
145: cclass_new=0;
146: append=true;
147: return true;
148: } else {
149: return false;
150: }
1.79 misha 151: }
152:
153: void set_all_vars_local(){
154: if(cclass_new){
1.81 misha 155: cclass_new->set_all_vars_local();
1.79 misha 156: } else {
1.81 misha 157: cclass->set_all_vars_local();
1.79 misha 158: }
159: }
160:
1.68 paf 161: void pos_next_line() {
162: pos.line++;
163: last_line_end_col=pos.col;
164: pos.col=0;
165: }
1.77 paf 166: void pos_next_c(int c) {
1.68 paf 167: if(c=='\t')
168: pos.col=(pos.col+TAB_SIZE)&~(TAB_SIZE-1);
169: else
170: pos.col++;
171: }
172: /// not precise in case of \t in the middle of the text
173: void pos_prev_c() {
174: if(pos.col==0) {
175: --pos.line; pos.col=last_line_end_col;
176: } else
177: --pos.col;
178: }
179: void ungetc() {
180: source--;
181: pos_prev_c();
182: }
1.1 paf 183: };
184:
1.36 paf 185: /// New array // return empty array
1.68 paf 186: inline ArrayOperation* N() {
187: return new ArrayOperation;
1.3 paf 188: }
189:
1.36 paf 190: /// Assembler instruction // append ordinary instruction to ops
1.80 misha 191: inline void O(ArrayOperation& result, OP::OPCODE code) {
1.68 paf 192: result+=Operation(code);
1.3 paf 193: }
194:
1.36 paf 195: /// aPpend 'code_array' to 'result'
1.68 paf 196: inline void P(ArrayOperation& result, ArrayOperation& code_array) {
197: result.append(code_array);
1.11 paf 198: }
1.36 paf 199: /// aPpend part of 'code_array', starting from offset, to 'result'
1.68 paf 200: inline void P(ArrayOperation& result, ArrayOperation& code_array, int offset) {
201: result.append(code_array, offset);
1.3 paf 202: }
1.53 paf 203:
1.84 misha 204: /// aPpend part of 'code_array', starting from offset, to 'result'
205: inline void P(ArrayOperation& result, ArrayOperation& code_array, int offset, int limit) {
206: result.append(code_array, offset, limit);
207: }
208:
1.68 paf 209: /// append cOde Array
1.80 misha 210: inline void OA(ArrayOperation& result, OP::OPCODE code, ArrayOperation* code_array) {
1.68 paf 211: result+=Operation(code); // append OP_CODE
212: result+=Operation(code_array); // append 'code_array'
1.61 paf 213: }
1.1 paf 214:
1.36 paf 215: /**
216: Value Literal // returns array with
1.68 paf 217: - first op: OP_VALUE instruction
218: - second op: origin (debug information)
219: - third op: string itself
1.36 paf 220: */
1.68 paf 221: inline ArrayOperation* VL(Value* value, uint file_no, uint line, uint col) {
1.61 paf 222: // empty ops array
1.68 paf 223: ArrayOperation& result=*N();
1.61 paf 224:
225: // append 'value' to 'result'
1.80 misha 226: result+=Operation(OP::OP_VALUE);
1.68 paf 227: result+=Operation(file_no, line, col); // append origin
228: result+=Operation(value); // append 'value'
229:
230: return &result;
1.61 paf 231: }
232:
1.68 paf 233: /// Literal Array to(2) Value @return Value from literal Array OP+origin+Value
1.85 misha 234: Value* LA2V(ArrayOperation& literal_string_array, int offset=0, OP::OPCODE code=OP::OP_VALUE);
1.68 paf 235: /// Literal Array to(2) String @return String value from literal Array OP+origin+String array
1.85 misha 236: inline const String* LA2S(ArrayOperation& literal_string_array, int offset=0, OP::OPCODE code=OP::OP_VALUE) {
237: if(Value* value=LA2V(literal_string_array, offset, code))
1.37 paf 238: return value->get_string();
239: return 0;
1.36 paf 240: }
1.61 paf 241:
1.68 paf 242: inline void change_string_literal_to_write_string_literal(ArrayOperation& literal_string_array) {
1.80 misha 243: literal_string_array.put(0, OP::OP_STRING__WRITE);
1.61 paf 244: }
245:
1.89 misha 246: void maybe_change_string_literal_to_double_literal(ArrayOperation& literal_string_array);
247:
248: void change_string_literal_value(ArrayOperation& literal_string_array, const String& new_value);
249:
250: void changetail_or_append(ArrayOperation& opcodes,
251: OP::OPCODE find, bool with_argument, OP::OPCODE replace, OP::OPCODE notfound);
252:
1.86 misha 253: bool maybe_change_first_opcode(ArrayOperation& opcodes, OP::OPCODE find, OP::OPCODE replace, bool strict=false);
254:
255: bool maybe_change_first_opcode(ArrayOperation& opcodes, OP::OPCODE find, OP::OPCODE last, OP::OPCODE replace);
256:
1.87 misha 257: bool maybe_make_get_object_element(ArrayOperation& opcodes, ArrayOperation& diving_code, size_t divine_count);
258:
259: bool maybe_make_get_object_var_element(ArrayOperation& opcodes, ArrayOperation& diving_code, size_t divine_count);
1.68 paf 260:
1.92 ! misha 261: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT
1.89 misha 262: // OP_VALUE+origin+value+OP_GET_ELEMENT+OP_VALUE+origin+value+OP_GET_ELEMENT => OP_GET_OBJECT_ELEMENT+origin+value+[OP_VALUE]+origin+value+OP_GET_ELEMENT
263: inline bool maybe_make_get_object_element(ArrayOperation& opcodes, ArrayOperation& diving_code, size_t divine_count){
264: if(divine_count!=8)
265: return false;
266:
267: assert(diving_code[0].code==OP::OP_VALUE);
268: if(
269: diving_code[4].code==OP::OP_VALUE
270: && diving_code[divine_count-1].code==OP::OP_GET_ELEMENT
271: ){
272: O(opcodes, OP::OP_GET_OBJECT_ELEMENT);
273: P(opcodes, diving_code, 1/*offset*/, 2/*limit*/); // copy origin+value
274: P(opcodes, diving_code, 5, 3); // copy specified tail
275: return true;
276: }
277: return false;
278: }
1.92 ! misha 279: #endif
1.88 misha 280:
1.92 ! misha 281: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT
1.89 misha 282: // OP_VALUE+origin+value+OP_GET_ELEMENT+OP_WITH_READ+OP_VALUE+origin+value+OP_GET_ELEMENT+OP_GET_ELEMENT => OP_GET_OBJECT_VAR_ELEMENT+origin+value+[OP_VALUE]+origin+value+OP_GET_ELEMENT
283: inline bool maybe_make_get_object_var_element(ArrayOperation& opcodes, ArrayOperation& diving_code, size_t divine_count){
284: if(divine_count!=10)
285: return false;
286:
287: assert(diving_code[0].code==OP::OP_VALUE);
288: if(
289: diving_code[4].code==OP::OP_WITH_READ
290: && diving_code[5].code==OP::OP_VALUE
291: && diving_code[divine_count-1].code==OP::OP_GET_ELEMENT
292: ){
293: O(opcodes, OP::OP_GET_OBJECT_VAR_ELEMENT);
294: P(opcodes, diving_code, 1/*offset*/, 2/*limit*/); // copy origin+value
295: P(opcodes, diving_code, 6, 3); // copy specified tail
296: return true;
297: }
298: return false;
299: }
1.92 ! misha 300: #endif
1.68 paf 301:
1.92 ! misha 302: #if defined(OPTIMIZE_BYTECODE_CONSTRUCT) || defined(OPTIMIZE_BYTECODE_CALL_CONSTRUCT)
1.89 misha 303: inline bool maybe_make_root_or_write_construct(ArrayOperation& opcodes, ArrayOperation& var_ops, ArrayOperation& expr_ops){
304: if(
305: var_ops.count()==4
306: && (var_ops[0].code==OP::OP_WITH_ROOT || var_ops[0].code==OP::OP_WITH_WRITE)
307: ){
308: // OP_WITH_ROOT|OP_WITH_WRITE
309: // OP_VALUE
310: // origin
311: // value
312: size_t count=expr_ops.count();
313:
314: ArrayOperation* source=0;
1.92 ! misha 315: size_t offset=1;
! 316: size_t limit=2;
! 317: OP::OPCODE code=OP::OP_VALUE;
1.89 misha 318: bool with_root=(var_ops[0].code==OP::OP_WITH_ROOT);
319:
320: if(
321: expr_ops[0].code==OP::OP_PREPARE_TO_EXPRESSION
322: && expr_ops[count-1].code==OP::OP_CONSTRUCT_EXPR
323: ){
1.92 ! misha 324: switch(count){
1.91 misha 325: #ifdef OPTIMIZE_BYTECODE_CONSTRUCT
1.92 ! misha 326: case 5: // count
! 327: {
! 328: if(expr_ops[1].code==OP::OP_VALUE){
! 329: // $a(1) $.a(2)
! 330: // OP_PREPARE_TO_EXPRESSION
! 331: // OP_VALUE
! 332: // origin
! 333: // value
! 334: // OP_CONSTRUCT_EXPR
! 335: O(opcodes, with_root ? OP::OP_ROOT_CONSTRUCT_EXPR : OP::OP_WRITE_CONSTRUCT_EXPR);
! 336: source=&expr_ops;
! 337: offset=2;
! 338: }
! 339: else if(expr_ops[1].code==OP::OP_VALUE__GET_ELEMENT){
! 340: // $a($b) or $.a($b)
! 341: // OP_PREPARE_TO_EXPRESSION
! 342: // OP_VALUE__GET_ELEMENT
! 343: // origin
! 344: // value
! 345: // OP_CONSTRUCT_EXPR
! 346: O(opcodes, with_root ? OP::OP_ROOT_ELEMENT_CONSTRUCT_EXPR : OP::OP_WRITE_ELEMENT_CONSTRUCT_EXPR);
! 347: source=&expr_ops;
! 348: offset=2;
! 349: }
! 350: break;
! 351: }
! 352: #endif
! 353:
1.91 misha 354: #ifdef OPTIMIZE_BYTECODE_CALL_CONSTRUCT
1.92 ! misha 355: case 7: // count
! 356: {
! 357: if(
! 358: expr_ops[1].code==OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR
! 359: && expr_ops[4].code==OP::OP_CALL
! 360: ){
! 361: // $a(^b[]) $.a(^b[])
! 362: // OP_PREPARE_TO_EXPRESSION
! 363: // VALUE__GET_ELEMENT_OR_OPERATOR
! 364: // origin
! 365: // value
! 366: // OP_CALL
! 367: // <empty params>
! 368: // OP_CONSTRUCT_EXPR
! 369: O(opcodes, with_root ? OP::OP_ROOT_CALL_CONSTRUCT_EXPR : OP::OP_WRITE_CALL_CONSTRUCT_EXPR);
! 370: source=&expr_ops;
! 371: offset=2;
! 372: limit=4;
! 373: }
! 374: break;
! 375: }
! 376: #endif
! 377:
1.91 misha 378: #ifdef OPTIMIZE_BYTECODE_CONSTRUCT
1.92 ! misha 379: case 8: // count
! 380: {
! 381: if(expr_ops[1].code==OP::OP_GET_OBJECT_ELEMENT){
! 382: // $a($b.c) or $.a($b.c)
! 383: // OP_PREPARE_TO_EXPRESSION
! 384: // OP_GET_OBJECT_ELEMENT
! 385: // origin
! 386: // value
! 387: // origin
! 388: // value
! 389: // OP_GET_ELEMENT
! 390: // OP_CONSTRUCT_EXPR
! 391: O(opcodes, with_root ? OP::OP_ROOT_OBJECT_ELEMENT_CONSTRUCT_EXPR : OP::OP_WRITE_OBJECT_ELEMENT_CONSTRUCT_EXPR);
! 392: source=&expr_ops;
! 393: code=OP::OP_GET_OBJECT_ELEMENT;
! 394: offset=2;
! 395: limit=4;
! 396: }
! 397: else if(expr_ops[1].code==OP::OP_GET_OBJECT_VAR_ELEMENT){
! 398: // $a($b.c) or $.a($b.c)
! 399: // OP_PREPARE_TO_EXPRESSION
! 400: // OP_GET_OBJECT_VAR_ELEMENT
! 401: // origin
! 402: // value
! 403: // origin
! 404: // value
! 405: // OP_GET_ELEMENT
! 406: // OP_CONSTRUCT_EXPR
! 407: O(opcodes, with_root ? OP::OP_ROOT_OBJECT_VAR_ELEMENT_CONSTRUCT_EXPR : OP::OP_WRITE_OBJECT_VAR_ELEMENT_CONSTRUCT_EXPR);
! 408: source=&expr_ops;
! 409: code=OP::OP_GET_OBJECT_VAR_ELEMENT;
! 410: offset=2;
! 411: limit=4;
! 412: }
! 413: break;
! 414: }
1.91 misha 415: #endif
1.92 ! misha 416: } // switch
! 417:
! 418: }
! 419: else if(expr_ops[count-1].code==OP::OP_CONSTRUCT_VALUE){
! 420: switch(count){
! 421: case 3: // count
! 422: {
! 423: if(expr_ops[0].code==OP::OP_OBJECT_POOL){
! 424: ArrayOperation& pool_ops=*expr_ops[1].ops;
! 425:
! 426: switch(pool_ops.count()){
1.89 misha 427:
1.91 misha 428: #ifdef OPTIMIZE_BYTECODE_CONSTRUCT
1.92 ! misha 429: case 3: // pool_count
! 430: {
! 431: if(pool_ops[0].code==OP::OP_VALUE__GET_ELEMENT__WRITE){
! 432: // $a[$b] $.a[$b]
! 433: // OP_OBJECT_POOL
! 434: // OP_VALUE__GET_ELEMENT__WRITE
! 435: // origin
! 436: // value
! 437: // OP_CONSTRUCT_VALUE
! 438: O(opcodes, with_root ? OP::OP_ROOT_ELEMENT_CONSTRUCT_VALUE : OP::OP_WRITE_ELEMENT_CONSTRUCT_VALUE);
! 439: source=&pool_ops;
! 440: }
! 441: break;
! 442: }
! 443: #endif
! 444:
1.91 misha 445: #ifdef OPTIMIZE_BYTECODE_CALL_CONSTRUCT
1.92 ! misha 446: case 5: // pool_count
! 447: {
! 448: if(
! 449: pool_ops[0].code==OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR
! 450: && pool_ops[3].code==OP::OP_CALL__WRITE
! 451: ){
! 452: // $a[^b[]] $.a[^b[]]
! 453: // OP_OBJECT_POOL
! 454: // OP_VALUE__GET_ELEMENT_OR_OPERATOR
! 455: // origin
! 456: // value
! 457: // OP_CALL__WRITE
! 458: // <empty params>
! 459: // OP_CONSTRUCT_VALUE
! 460: O(opcodes, with_root ? OP::OP_ROOT_CALL_CONSTRUCT_VALUE : OP::OP_WRITE_CALL_CONSTRUCT_VALUE);
! 461: source=&pool_ops;
! 462: limit=4;
! 463: }
! 464: break;
! 465: }
! 466: #endif
! 467:
! 468: #ifdef OPTIMIZE_BYTECODE_CONSTRUCT
! 469: case 6: // pool_count
! 470: {
! 471: if(pool_ops[0].code==OP::OP_GET_OBJECT_ELEMENT__WRITE){
! 472: // $a[$b.c] $.a[$b.c]
! 473: // OP_OBJECT_POOL
! 474: // OP_GET_OBJECT_ELEMENT__WRITE
! 475: // origin
! 476: // value
! 477: // origin
! 478: // value
! 479: // OP_GET_ELEMENT
! 480: // OP_CONSTRUCT_VALUE
! 481: O(opcodes, with_root ? OP::OP_ROOT_OBJECT_ELEMENT_CONSTRUCT_VALUE : OP::OP_WRITE_OBJECT_ELEMENT_CONSTRUCT_VALUE);
! 482: source=&pool_ops;
! 483: code=OP::OP_GET_OBJECT_ELEMENT;
! 484: limit=4;
! 485: }
! 486: else if(pool_ops[0].code==OP::OP_GET_OBJECT_VAR_ELEMENT__WRITE){
! 487: // $a[$b.$c] $.a[$b.$c]
! 488: // OP_OBJECT_POOL
! 489: // OP_GET_OBJECT_VAR_ELEMENT__WRITE
! 490: // origin
! 491: // value
! 492: // origin
! 493: // value
! 494: // OP_GET_ELEMENT
! 495: // OP_CONSTRUCT_VALUE
! 496: O(opcodes, with_root ? OP::OP_ROOT_OBJECT_VAR_ELEMENT_CONSTRUCT_VALUE : OP::OP_WRITE_OBJECT_VAR_ELEMENT_CONSTRUCT_VALUE);
! 497: source=&pool_ops;
! 498: code=OP::OP_GET_OBJECT_VAR_ELEMENT__WRITE;
! 499: limit=4;
! 500: }
! 501: break;
! 502: }
! 503: #endif
! 504: }
! 505: }
! 506: break;
! 507: }
! 508:
! 509: #ifdef OPTIMIZE_BYTECODE_CONSTRUCT
! 510: case 4: // count
! 511: {
! 512: if(expr_ops[0].code==OP::OP_VALUE){
! 513: // $a[b] $.a[b]
! 514: // OP_VALUE
! 515: // origin
! 516: // value
! 517: // OP_CONSTRUCT_VALUE
! 518: O(opcodes, with_root ? OP::OP_ROOT_CONSTRUCT_VALUE : OP::OP_WRITE_CONSTRUCT_VALUE);
! 519: source=&expr_ops;
! 520: }
! 521: break;
! 522: }
! 523: #endif
! 524: } // switch
1.89 misha 525: }
1.68 paf 526:
1.89 misha 527: if(source){
528: P(opcodes, var_ops, 2/*offset*/, 2/*limit*/); // copy 1st origin+value
1.92 ! misha 529: if(limit!=2)
! 530: O(opcodes, code);
1.89 misha 531: P(opcodes, *source, offset, limit);
532: return true;
533: }
534: }
535: return false;
536: }
1.92 ! misha 537: #endif
1.61 paf 538:
1.1 paf 539:
1.68 paf 540: void push_LS(Parse_control& pc, lexical_state new_state);
541: void pop_LS(Parse_control& pc);
1.1 paf 542:
543: #endif