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| version 1.22, 2001/03/07 12:11:29 | version 1.76, 2005/08/09 08:14:51 |
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| Line 1 | Line 1 |
| /* | /** @file |
| $Id$ | Parser: compiler support helper functions decls. |
| Copyright (c) 2001-2005 ArtLebedev Group (http://www.artlebedev.com) | |
| Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) | |
| */ | */ |
| #ifndef COMPILE_TOOLS | #ifndef COMPILE_TOOLS |
| #define COMPILE_TOOLS | #define COMPILE_TOOLS |
| #include "code.h" | static const char * const IDENT_COMPILE_TOOLS_H="$Date$"; |
| #include "pa_opcode.h" | |
| #include "pa_types.h" | #include "pa_types.h" |
| #include "pa_vstring.h" | #include "pa_vstring.h" |
| #include "pa_request.h" | #include "pa_request.h" |
| /// used to track source column number | |
| #define TAB_SIZE 8 | |
| enum lexical_state { | enum lexical_state { |
| LS_USER, | LS_USER, LS_NAME_SQUARE_PART, |
| LS_USER_COMMENT, | |
| LS_DEF_NAME, | LS_DEF_NAME, |
| LS_DEF_PARAMS, | LS_DEF_PARAMS, |
| LS_DEF_LOCALS, | LS_DEF_LOCALS, |
| LS_DEF_COMMENT, | LS_DEF_COMMENT, |
| LS_DEF_SPECIAL_BODY, | LS_DEF_SPECIAL_BODY, |
| LS_EXPRESSION_STRING, | LS_EXPRESSION_STRING_QUOTED, |
| LS_EXPRESSION_VAR_NAME, | LS_EXPRESSION_STRING_APOSTROFED, |
| LS_VAR_NAME_SIMPLE, | LS_EXPRESSION_VAR_NAME_WITH_COLON, LS_EXPRESSION_VAR_NAME_WITHOUT_COLON, |
| LS_EXPRESSION_COMMENT, | |
| LS_VAR_NAME_SIMPLE_WITH_COLON, LS_VAR_NAME_SIMPLE_WITHOUT_COLON, | |
| LS_VAR_NAME_CURLY, | LS_VAR_NAME_CURLY, |
| LS_VAR_ROUND, | LS_VAR_ROUND, |
| LS_VAR_SQUARE, | LS_VAR_SQUARE, |
| Line 30 enum lexical_state { | Line 41 enum lexical_state { |
| LS_METHOD_ROUND, | LS_METHOD_ROUND, |
| LS_METHOD_AFTER | LS_METHOD_AFTER |
| }; | }; |
| struct parse_control { | |
| // input | struct Pos { |
| Pool *pool; | int line; |
| Request *request; | int col; |
| VClass *vclass; | Pos(int aline, int acol): line(aline), col(acol) {} |
| #ifndef NO_CSTRING_ORIGIN | Pos(): line(0), col(0) {} |
| char *source; | |
| char *file; | void clear() { line=col=0; } |
| int line, col; | operator bool() { return col!=0; } |
| #endif | }; |
| // state | |
| int pending_state; //=0 | /// compiler status |
| String *string; //=new(pool) String(pool) | class Parse_control { |
| const String* main_alias; | |
| uint last_line_end_col; | |
| public: | |
| const String& alias_method(const String& name); | |
| //@{ | |
| /// @name input | |
| Request& request; | |
| VStateless_class* cclass; | |
| const char* source; | |
| uint file_no; | |
| Pos pos; | |
| //@} | |
| //@{ | |
| /// @name state; initially | |
| bool trim_bof; | |
| int pending_state; ///< i=0 | |
| String::Body string; ///< lexical string accumulator | |
| Pos string_start; | |
| #define MAX_LEXICAL_STATES 100 | #define MAX_LEXICAL_STATES 100 |
| enum lexical_state ls; //=LS_USER; | enum lexical_state ls; ///< =LS_USER; |
| int sp; //=0 | int ls_sp; ///< =0 |
| enum lexical_state stack[MAX_LEXICAL_STATES]; | enum lexical_state ls_stack[MAX_LEXICAL_STATES]; |
| int brackets_nestages[MAX_LEXICAL_STATES]; | 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 | /// output: filled input 'methods' and 'error' if any |
| char error[MAX_STRING]; | 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 | |
| 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) {} | |
| void pos_next_line() { | |
| pos.line++; | |
| last_line_end_col=pos.col; | |
| pos.col=0; | |
| } | |
| void pos_next_c(char 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 | /// New array // return empty array |
| inline Array/*<op>*/ *N(Pool& pool) { | inline ArrayOperation* N() { |
| return new(pool) Array/*<op>*/(pool); | return new ArrayOperation; |
| } | } |
| // Assembler instruction // append ordinary instruction to ops | /// Assembler instruction // append ordinary instruction to ops |
| inline void O(Array/*<op>*/ *result, enum OPCODE code) { | inline void O(ArrayOperation& result, OPCODE code) { |
| Operation op; op.code=code; | result+=Operation(code); |
| *result+=op.cast; | |
| } | } |
| // Argument Eval_expression // append eval_expression to ops | /// aPpend 'code_array' to 'result' |
| inline void AE(Array/*<op>*/ *result, char *eval_expression) { | inline void P(ArrayOperation& result, ArrayOperation& code_array) { |
| *result+=eval_expression; | result.append(code_array); |
| } | |
| /// aPpend part of 'code_array', starting from offset, to 'result' | |
| inline void P(ArrayOperation& result, ArrayOperation& code_array, int offset) { | |
| result.append(code_array, offset); | |
| } | |
| /// 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: OP_VALUE instruction | |
| - second op: origin (debug information) | |
| - third op: string itself | |
| */ | |
| inline ArrayOperation* VL(Value* value, uint file_no, uint line, uint col) { | |
| // empty ops array | |
| ArrayOperation& result=*N(); | |
| // append 'value' to 'result' | |
| result+=Operation(OP_VALUE); | |
| result+=Operation(file_no, line, col); // append origin | |
| result+=Operation(value); // append 'value' | |
| return &result; | |
| } | } |
| // aPpend 'code_array' to 'result' | /// Literal Array to(2) Value @return Value from literal Array OP+origin+Value |
| inline void P(Array/*<op>*/ *result, Array *code_array) { | Value* LA2V(ArrayOperation& literal_string_array, int offset=0); |
| result->append_array(*code_array); | /// 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; | |
| } | } |
| // aPpend part of 'code_array', starting from offset, to 'result' | |
| inline void P(Array/*<op>*/ *result, Array *code_array, int offset) { | inline void change_string_literal_to_write_string_literal(ArrayOperation& literal_string_array) { |
| result->append_array(*code_array, offset); | literal_string_array.put(0, OP_STRING__WRITE); |
| } | } |
| // aPpend 'vstring' to 'result' | |
| void PV(Array/*<op>*/ *result, VString *vstring); | |
| // aPpend 'Code_Array' to result | |
| void PCA(Array/*<op>*/ *result, Array/*<op>*/ *code_array); | |
| // Value Literal // returns array with | void maybe_change_string_literal_to_double_literal(ArrayOperation& literal_string_array); |
| // first: OP_VALUE instruction | |
| // second op: string itself | |
| Array *VL(Value *value); | |
| // Literal Array to(2) String // return string value from literal array OP+string array | |
| String *SLA2S(Array *literal_string_array, int offset=0); | |
| void change_string_literal_to_double_literal(Array *literal_string_array); | void change_string_literal_value(ArrayOperation& literal_string_array, const String& new_value); |
| // Class Literal // returns array with | void changetail_or_append(ArrayOperation& opcodes, |
| // first: OP_CLASS instruction | OPCODE find, bool with_argument, OPCODE replace, OPCODE notfound); |
| // second op: vclass itself | |
| Array *CL(VClass *vclass); | |
| void push_LS(struct parse_control *pc, lexical_state new_state); | void push_LS(Parse_control& pc, lexical_state new_state); |
| void pop_LS(struct parse_control *pc); | void pop_LS(Parse_control& pc); |
| #endif | #endif |