--- parser3/src/main/compile_tools.h 2003/01/30 09:14:01 1.67.2.1 +++ parser3/src/main/compile_tools.h 2008/06/10 14:06:36 1.78 @@ -1,20 +1,23 @@ /** @file Parser: compiler support helper functions decls. - Copyright (c) 2001, 2003 ArtLebedev Group (http://www.artlebedev.com) + Copyright (c) 2001-2005 ArtLebedev Group (http://www.artlebedev.com) Author: Alexandr Petrosian (http://paf.design.ru) */ #ifndef COMPILE_TOOLS #define COMPILE_TOOLS -static const char* IDENT_COMPILE_TOOLS_H="$Date: 2003/01/30 09:14:01 $"; +static const char * const IDENT_COMPILE_TOOLS_H="$Date: 2008/06/10 14:06:36 $"; #include "pa_opcode.h" #include "pa_types.h" #include "pa_vstring.h" #include "pa_request.h" +/// used to track source column number +#define TAB_SIZE 8 + enum lexical_state { LS_USER, LS_NAME_SQUARE_PART, LS_USER_COMMENT, @@ -38,24 +41,38 @@ enum lexical_state { LS_METHOD_ROUND, LS_METHOD_AFTER }; + +struct Pos { + int line; + int col; + Pos(int aline, int acol): line(aline), col(acol) {} + Pos(): line(0), col(0) {} + + void clear() { line=col=0; } + operator bool() { return col!=0; } +}; + /// compiler status -struct parse_control { +class Parse_control { + const String* main_alias; + uint last_line_end_col; +public: + const String& alias_method(const String& name); //@{ /// @name input - Pool *pool; - Request *request; - VStateless_class *cclass; -#ifndef NO_STRING_ORIGIN - const char *source; - const char *file; -#endif - int line, col; + Request& request; + VStateless_class* cclass; + ArrayClass* cclasses; + const char* source; + uint file_no; + Pos pos; //@} //@{ /// @name state; initially bool trim_bof; int pending_state; ///< i=0 - StringPtr string; ///< lexical string accumulator + String::Body string; ///< lexical string accumulator + Pos string_start; #define MAX_LEXICAL_STATES 100 enum lexical_state ls; ///< =LS_USER; @@ -64,81 +81,130 @@ struct parse_control { int brackets_nestages[MAX_LEXICAL_STATES]; ///< brackets nestage on each state bool in_call_value; + bool explicit_result; //@} /// output: filled input 'methods' and 'error' if any char error[MAX_STRING]; + + Parse_control(Request& arequest, + VStateless_class* aclass, + const char* asource, const String* amain_alias, + uint afile_no, + int line_no_offset): + main_alias(amain_alias), + last_line_end_col(0), + + request(arequest), // input + + // we were told the class to compile to? + cclass(aclass), // until changed with @CLASS would consider operators loading + cclasses(new ArrayClass(1)), + source(asource), + file_no(afile_no), + pos(line_no_offset, 0), + + // initialize state + trim_bof(true), + pending_state(0), + ls(LS_USER), + ls_sp(0), + in_call_value(false), + explicit_result(false) { + + *cclasses+=aclass; + } + + void pos_next_line() { + pos.line++; + last_line_end_col=pos.col; + pos.col=0; + } + void pos_next_c(int c) { + if(c=='\t') + pos.col=(pos.col+TAB_SIZE)&~(TAB_SIZE-1); + else + pos.col++; + } + /// not precise in case of \t in the middle of the text + void pos_prev_c() { + if(pos.col==0) { + --pos.line; pos.col=last_line_end_col; + } else + --pos.col; + } + void ungetc() { + source--; + pos_prev_c(); + } }; /// New array // return empty array -inline ArrayCodePtr N() { - return new ArrayCode; +inline ArrayOperation* N() { + return new ArrayOperation; } /// Assembler instruction // append ordinary instruction to ops -inline void O(Array/**/ *result, enum OPCODE code) { - Operation op; op.code=code; - *result+=op.cast; +inline void O(ArrayOperation& result, OPCODE code) { + result+=Operation(code); } /// aPpend 'code_array' to 'result' -inline void P(Array/**/ *result, Array *code_array) { - result->append_array(*code_array); +inline void P(ArrayOperation& result, ArrayOperation& code_array) { + result.append(code_array); } /// aPpend part of 'code_array', starting from offset, to 'result' -inline void P(Array/**/ *result, Array *code_array, int offset) { - result->append_array(*code_array, offset); +inline void P(ArrayOperation& result, ArrayOperation& code_array, int offset) { + result.append(code_array, offset); } -/// aPpend 'vstring' to 'result' -void PV(Array/**/ *result, Value *value); - -inline void OA(Array/**/ *result, OPCODE opcode, Array/**/ *code_array) { - // append OP_CODE - Operation op; op.code=opcode; - *result+=op.cast; - - // append 'vstring' - *result+=code_array; +/// append cOde Array +inline void OA(ArrayOperation& result, OPCODE code, ArrayOperation* code_array) { + result+=Operation(code); // append OP_CODE + result+=Operation(code_array); // append 'code_array' } /** Value Literal // returns array with - - first: OP_VALUE instruction - - second op: string itself + - first op: OP_VALUE instruction + - second op: origin (debug information) + - third op: string itself */ -inline Array *VL(Value *value) { +inline ArrayOperation* VL(Value* value, uint file_no, uint line, uint col) { // empty ops array - Array *result=N(value->pool()); + ArrayOperation& result=*N(); // append 'value' to 'result' - PV(result, value); - - return result; + result+=Operation(OP_VALUE); + result+=Operation(file_no, line, col); // append origin + result+=Operation(value); // append 'value' + + return &result; } -/// Literal Array to(2) Value @return Value from literal Array OP+Value -Value *LA2V(Array *literal_string_array, int offset=0); -/// Literal Array to(2) String @return String value from literal Array OP+String array -inline const String *LA2S(Array *literal_string_array, int offset=0) { - if(Value *value=LA2V(literal_string_array, offset)) +/// Literal Array to(2) Value @return Value from literal Array OP+origin+Value +Value* LA2V(ArrayOperation& literal_string_array, int offset=0); +/// Literal Array to(2) String @return String value from literal Array OP+origin+String array +inline const String* LA2S(ArrayOperation& literal_string_array, int offset=0) { + if(Value* value=LA2V(literal_string_array, offset)) return value->get_string(); return 0; } -inline void change_string_literal_to_write_string_literal(Array *literal_string_array) { - Operation op; op.code=OP_STRING__WRITE; - literal_string_array->put(0, op.cast); +inline void change_string_literal_to_write_string_literal(ArrayOperation& literal_string_array) { + literal_string_array.put(0, OP_STRING__WRITE); } -void changetail_or_append(Array *opcodes, - OPCODE find, bool with_argument, OPCODE replace, OPCODE notfound); -void change_string_literal_to_double_literal(Array *literal_string_array); +void maybe_change_string_literal_to_double_literal(ArrayOperation& literal_string_array); + +void change_string_literal_value(ArrayOperation& literal_string_array, const String& new_value); + +void changetail_or_append(ArrayOperation& opcodes, + OPCODE find, bool with_argument, OPCODE replace, OPCODE notfound); -void change_string_literal_value(Array *literal_string_array, const String& new_value); -void push_LS(parse_control& pc, lexical_state new_state); -void pop_LS(parse_control& pc); +void push_LS(Parse_control& pc, lexical_state new_state); +void pop_LS(Parse_control& pc); #endif