MySQL 8.4.3
Source Code Documentation
parse_location.h
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23
24#ifndef PARSE_LOCATION_INCLUDED
25#define PARSE_LOCATION_INCLUDED
26
27#include <cstdlib> // size_t
28
29/**
30 Helper class for the MY_SQL_PARSER_LTYPE
31*/
33 const char *start = nullptr; // token start
34 const char *end = nullptr; // the 1st byte after the token
35
36 bool is_empty() const { return length() == 0; }
37 size_t length() const { return static_cast<size_t>(end - start); }
38};
39
40/**
41 Bison "location" class
42*/
44 Symbol_location cpp; // token location in the preprocessed buffer
45 Symbol_location raw; // token location in the raw buffer
46
47 bool is_empty() const { return cpp.is_empty(); }
48};
49
50/*
51 Note: MY_SQL_PARSER_LTYPE doesn't overload a default constructor (as
52 well an underlying Symbol_location). OTOH if we need a
53 zero-initialized POS, MY_SQL_PARSER_LTYPE or Symbol_location object,
54 we can simply call POS(), MY_SQL_PARSER_LTYPE() or
55 Symbol_location(): C++ does value-initialization in that case.
56*/
58
59// signal Bison that we have our own MY_SQL_PARSER_LTYPE
60#define MY_SQL_PARSER_LTYPE_IS_DECLARED 1
61
62/**
63 Bison calls this macro:
64 1. each time a rule is matched and
65 2. to compute a syntax error location.
66
67 @param [out] Current location of the whole matched rule
68 @param Rhs locations of all right hand side elements in the rule
69 @param N number of right hand side elements in the rule
70*/
71#define YYLLOC_DEFAULT(Current, Rhs, N) \
72 do \
73 if (N) { \
74 (Current).cpp.start = YYRHSLOC(Rhs, 1).cpp.start; \
75 (Current).cpp.end = YYRHSLOC(Rhs, N).cpp.end; \
76 (Current).raw.start = YYRHSLOC(Rhs, 1).raw.start; \
77 (Current).raw.end = YYRHSLOC(Rhs, N).raw.end; \
78 } else { \
79 (Current).cpp.start = (Current).cpp.end = YYRHSLOC(Rhs, 0).cpp.end; \
80 (Current).raw.start = (Current).raw.end = YYRHSLOC(Rhs, 0).raw.end; \
81 } \
82 while (0)
83
84#endif /* PARSE_LOCATION_INCLUDED */
struct MY_SQL_PARSER_LTYPE MY_SQL_PARSER_LTYPE
Definition: sql_yacc.h:1686
Bison "location" class.
Definition: parse_location.h:43
bool is_empty() const
Definition: parse_location.h:47
Symbol_location cpp
Definition: parse_location.h:44
Symbol_location raw
Definition: parse_location.h:45
Helper class for the MY_SQL_PARSER_LTYPE.
Definition: parse_location.h:32
bool is_empty() const
Definition: parse_location.h:36
const char * start
Definition: parse_location.h:33
const char * end
Definition: parse_location.h:34
size_t length() const
Definition: parse_location.h:37