mirror of https://github.com/nothings/stb.git
stb_c_lexer: allow including stb_c_lexer.h without defining overrides (all tokens are always defined; token values have changed)
This commit is contained in:
Sean Barrett
parent
0be82e4814
commit
fd7807e92d
|
|
@ -42,6 +42,7 @@
|
|||
//
|
||||
// See end of file for license information.
|
||||
|
||||
#ifdef STB_C_LEXER_IMPLEMENTATION
|
||||
#ifndef STB_C_LEXER_DEFINITIONS
|
||||
// to change the default parsing rules, copy the following lines
|
||||
// into your C/C++ file *before* including this, and then replace
|
||||
|
|
@ -54,7 +55,6 @@
|
|||
#error "Can only use stb_c_lexer in contexts where the preprocessor symbols 'Y' and 'N' are not defined"
|
||||
#endif
|
||||
|
||||
|
||||
#define STB_C_LEX_C_DECIMAL_INTS Y // "0|[1-9][0-9]*" CLEX_intlit
|
||||
#define STB_C_LEX_C_HEX_INTS Y // "0x[0-9a-fA-F]+" CLEX_intlit
|
||||
#define STB_C_LEX_C_OCTAL_INTS Y // "[0-7]+" CLEX_intlit
|
||||
|
|
@ -102,7 +102,7 @@
|
|||
|
||||
#define STB_C_LEXER_DEFINITIONS // This line prevents the header file from replacing your definitions
|
||||
// --END--
|
||||
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#ifndef INCLUDE_STB_C_LEXER_H
|
||||
|
|
@ -172,78 +172,41 @@ extern void stb_c_lexer_get_location(const stb_lexer *lexer, const char *where,
|
|||
}
|
||||
#endif
|
||||
|
||||
// Hacky definitions so we can easily #if on them
|
||||
#define Y(x) 1
|
||||
#define N(x) 0
|
||||
|
||||
// Config variable that influence which lexer tokens get declared need to go here
|
||||
#if STB_C_LEX_C_DECIMAL_INTS(x) || STB_C_LEX_C_HEX_INTS(x) || STB_C_LEX_DEFINE_ALL_TOKEN_NAMES(x)
|
||||
#define STB__clex_define_int
|
||||
#endif
|
||||
|
||||
#if (STB_C_LEX_C_ARITHEQ(x) && STB_C_LEX_C_SHIFTS(x)) || STB_C_LEX_DEFINE_ALL_TOKEN_NAMES(x)
|
||||
#define STB__clex_define_shifts
|
||||
#endif
|
||||
|
||||
// Now pick a definition of Y/N that's conducive to
|
||||
// defining the enum of token names.
|
||||
#if STB_C_LEX_DEFINE_ALL_TOKEN_NAMES(x) || defined(STB_C_LEXER_SELF_TEST)
|
||||
#undef N
|
||||
#define N(a) Y(a)
|
||||
#else
|
||||
#undef N
|
||||
#define N(a)
|
||||
#endif
|
||||
|
||||
#undef Y
|
||||
#define Y(a) a,
|
||||
|
||||
enum
|
||||
{
|
||||
CLEX_eof = 256,
|
||||
CLEX_parse_error,
|
||||
|
||||
#ifdef STB__clex_define_int
|
||||
CLEX_intlit,
|
||||
#endif
|
||||
|
||||
STB_C_LEX_C_DECIMAL_FLOATS( CLEX_floatlit )
|
||||
STB_C_LEX_C_IDENTIFIERS( CLEX_id )
|
||||
STB_C_LEX_C_DQ_STRINGS( CLEX_dqstring )
|
||||
STB_C_LEX_C_SQ_STRINGS( CLEX_sqstring )
|
||||
STB_C_LEX_C_CHARS( CLEX_charlit )
|
||||
STB_C_LEX_C_COMPARISONS( CLEX_eq )
|
||||
STB_C_LEX_C_COMPARISONS( CLEX_noteq )
|
||||
STB_C_LEX_C_COMPARISONS( CLEX_lesseq )
|
||||
STB_C_LEX_C_COMPARISONS( CLEX_greatereq )
|
||||
STB_C_LEX_C_LOGICAL( CLEX_andand )
|
||||
STB_C_LEX_C_LOGICAL( CLEX_oror )
|
||||
STB_C_LEX_C_SHIFTS( CLEX_shl )
|
||||
STB_C_LEX_C_SHIFTS( CLEX_shr )
|
||||
STB_C_LEX_C_INCREMENTS( CLEX_plusplus )
|
||||
STB_C_LEX_C_INCREMENTS( CLEX_minusminus )
|
||||
STB_C_LEX_C_ARITHEQ( CLEX_pluseq )
|
||||
STB_C_LEX_C_ARITHEQ( CLEX_minuseq )
|
||||
STB_C_LEX_C_ARITHEQ( CLEX_muleq )
|
||||
STB_C_LEX_C_ARITHEQ( CLEX_diveq )
|
||||
STB_C_LEX_C_ARITHEQ( CLEX_modeq )
|
||||
STB_C_LEX_C_BITWISEEQ( CLEX_andeq )
|
||||
STB_C_LEX_C_BITWISEEQ( CLEX_oreq )
|
||||
STB_C_LEX_C_BITWISEEQ( CLEX_xoreq )
|
||||
STB_C_LEX_C_ARROW( CLEX_arrow )
|
||||
STB_C_LEX_EQUAL_ARROW( CLEX_eqarrow )
|
||||
|
||||
#ifdef STB__clex_define_shifts
|
||||
CLEX_intlit ,
|
||||
CLEX_floatlit ,
|
||||
CLEX_id ,
|
||||
CLEX_dqstring ,
|
||||
CLEX_sqstring ,
|
||||
CLEX_charlit ,
|
||||
CLEX_eq ,
|
||||
CLEX_noteq ,
|
||||
CLEX_lesseq ,
|
||||
CLEX_greatereq ,
|
||||
CLEX_andand ,
|
||||
CLEX_oror ,
|
||||
CLEX_shl ,
|
||||
CLEX_shr ,
|
||||
CLEX_plusplus ,
|
||||
CLEX_minusminus ,
|
||||
CLEX_pluseq ,
|
||||
CLEX_minuseq ,
|
||||
CLEX_muleq ,
|
||||
CLEX_diveq ,
|
||||
CLEX_modeq ,
|
||||
CLEX_andeq ,
|
||||
CLEX_oreq ,
|
||||
CLEX_xoreq ,
|
||||
CLEX_arrow ,
|
||||
CLEX_eqarrow ,
|
||||
CLEX_shleq, CLEX_shreq,
|
||||
#endif
|
||||
|
||||
CLEX_first_unused_token
|
||||
|
||||
};
|
||||
|
||||
#undef Y
|
||||
#undef N
|
||||
|
||||
#endif // INCLUDE_STB_C_LEXER_H
|
||||
|
||||
#ifdef STB_C_LEXER_IMPLEMENTATION
|
||||
|
|
|
|||
|
|
@ -1 +1,50 @@
|
|||
#include "stb_c_lexer.h"
|
||||
|
||||
#define STB_C_LEX_C_DECIMAL_INTS Y // "0|[1-9][0-9]*" CLEX_intlit
|
||||
#define STB_C_LEX_C_HEX_INTS Y // "0x[0-9a-fA-F]+" CLEX_intlit
|
||||
#define STB_C_LEX_C_OCTAL_INTS Y // "[0-7]+" CLEX_intlit
|
||||
#define STB_C_LEX_C_DECIMAL_FLOATS Y // "[0-9]*(.[0-9]*([eE][-+]?[0-9]+)?) CLEX_floatlit
|
||||
#define STB_C_LEX_C99_HEX_FLOATS N // "0x{hex}+(.{hex}*)?[pP][-+]?{hex}+ CLEX_floatlit
|
||||
#define STB_C_LEX_C_IDENTIFIERS Y // "[_a-zA-Z][_a-zA-Z0-9]*" CLEX_id
|
||||
#define STB_C_LEX_C_DQ_STRINGS Y // double-quote-delimited strings with escapes CLEX_dqstring
|
||||
#define STB_C_LEX_C_SQ_STRINGS N // single-quote-delimited strings with escapes CLEX_ssstring
|
||||
#define STB_C_LEX_C_CHARS Y // single-quote-delimited character with escape CLEX_charlits
|
||||
#define STB_C_LEX_C_COMMENTS Y // "/* comment */"
|
||||
#define STB_C_LEX_CPP_COMMENTS Y // "// comment to end of line\n"
|
||||
#define STB_C_LEX_C_COMPARISONS Y // "==" CLEX_eq "!=" CLEX_noteq "<=" CLEX_lesseq ">=" CLEX_greatereq
|
||||
#define STB_C_LEX_C_LOGICAL Y // "&&" CLEX_andand "||" CLEX_oror
|
||||
#define STB_C_LEX_C_SHIFTS Y // "<<" CLEX_shl ">>" CLEX_shr
|
||||
#define STB_C_LEX_C_INCREMENTS Y // "++" CLEX_plusplus "--" CLEX_minusminus
|
||||
#define STB_C_LEX_C_ARROW Y // "->" CLEX_arrow
|
||||
#define STB_C_LEX_EQUAL_ARROW N // "=>" CLEX_eqarrow
|
||||
#define STB_C_LEX_C_BITWISEEQ Y // "&=" CLEX_andeq "|=" CLEX_oreq "^=" CLEX_xoreq
|
||||
#define STB_C_LEX_C_ARITHEQ Y // "+=" CLEX_pluseq "-=" CLEX_minuseq
|
||||
// "*=" CLEX_muleq "/=" CLEX_diveq "%=" CLEX_modeq
|
||||
// if both STB_C_LEX_SHIFTS & STB_C_LEX_ARITHEQ:
|
||||
// "<<=" CLEX_shleq ">>=" CLEX_shreq
|
||||
|
||||
#define STB_C_LEX_PARSE_SUFFIXES N // letters after numbers are parsed as part of those numbers, and must be in suffix list below
|
||||
#define STB_C_LEX_DECIMAL_SUFFIXES "" // decimal integer suffixes e.g. "uUlL" -- these are returned as-is in string storage
|
||||
#define STB_C_LEX_HEX_SUFFIXES "" // e.g. "uUlL"
|
||||
#define STB_C_LEX_OCTAL_SUFFIXES "" // e.g. "uUlL"
|
||||
#define STB_C_LEX_FLOAT_SUFFIXES "" //
|
||||
|
||||
#define STB_C_LEX_0_IS_EOF Y // if Y, ends parsing at '\0'; if N, returns '\0' as token
|
||||
#define STB_C_LEX_INTEGERS_AS_DOUBLES N // parses integers as doubles so they can be larger than 'int', but only if STB_C_LEX_STDLIB==N
|
||||
#define STB_C_LEX_MULTILINE_DSTRINGS N // allow newlines in double-quoted strings
|
||||
#define STB_C_LEX_MULTILINE_SSTRINGS N // allow newlines in single-quoted strings
|
||||
#define STB_C_LEX_USE_STDLIB Y // use strtod,strtol for parsing #s; otherwise inaccurate hack
|
||||
#define STB_C_LEX_DOLLAR_IDENTIFIER Y // allow $ as an identifier character
|
||||
#define STB_C_LEX_FLOAT_NO_DECIMAL Y // allow floats that have no decimal point if they have an exponent
|
||||
|
||||
#define STB_C_LEX_DEFINE_ALL_TOKEN_NAMES N // if Y, all CLEX_ token names are defined, even if never returned
|
||||
// leaving it as N should help you catch config bugs
|
||||
|
||||
#define STB_C_LEX_DISCARD_PREPROCESSOR Y // discard C-preprocessor directives (e.g. after prepocess
|
||||
// still have #line, #pragma, etc)
|
||||
|
||||
//#define STB_C_LEX_ISWHITE(str) ... // return length in bytes of whitespace characters if first char is whitespace
|
||||
|
||||
#define STB_C_LEXER_DEFINITIONS // This line prevents the header file from replacing your definitions
|
||||
|
||||
#include "stb_c_lexer.h"
|
||||
|
|
|
|||
|
|
@ -183,53 +183,4 @@ void dummy3(void)
|
|||
stb_textedit_paste(0,0,0,0);
|
||||
}
|
||||
|
||||
#if 0
|
||||
#define STB_C_LEX_C_DECIMAL_INTS Y // "0|[1-9][0-9]*" CLEX_intlit
|
||||
#define STB_C_LEX_C_HEX_INTS Y // "0x[0-9a-fA-F]+" CLEX_intlit
|
||||
#define STB_C_LEX_C_OCTAL_INTS Y // "[0-7]+" CLEX_intlit
|
||||
#define STB_C_LEX_C_DECIMAL_FLOATS Y // "[0-9]*(.[0-9]*([eE][-+]?[0-9]+)?) CLEX_floatlit
|
||||
#define STB_C_LEX_C99_HEX_FLOATS N // "0x{hex}+(.{hex}*)?[pP][-+]?{hex}+ CLEX_floatlit
|
||||
#define STB_C_LEX_C_IDENTIFIERS Y // "[_a-zA-Z][_a-zA-Z0-9]*" CLEX_id
|
||||
#define STB_C_LEX_C_DQ_STRINGS Y // double-quote-delimited strings with escapes CLEX_dqstring
|
||||
#define STB_C_LEX_C_SQ_STRINGS N // single-quote-delimited strings with escapes CLEX_ssstring
|
||||
#define STB_C_LEX_C_CHARS Y // single-quote-delimited character with escape CLEX_charlits
|
||||
#define STB_C_LEX_C_COMMENTS Y // "/* comment */"
|
||||
#define STB_C_LEX_CPP_COMMENTS Y // "// comment to end of line\n"
|
||||
#define STB_C_LEX_C_COMPARISONS Y // "==" CLEX_eq "!=" CLEX_noteq "<=" CLEX_lesseq ">=" CLEX_greatereq
|
||||
#define STB_C_LEX_C_LOGICAL Y // "&&" CLEX_andand "||" CLEX_oror
|
||||
#define STB_C_LEX_C_SHIFTS Y // "<<" CLEX_shl ">>" CLEX_shr
|
||||
#define STB_C_LEX_C_INCREMENTS Y // "++" CLEX_plusplus "--" CLEX_minusminus
|
||||
#define STB_C_LEX_C_ARROW Y // "->" CLEX_arrow
|
||||
#define STB_C_LEX_EQUAL_ARROW N // "=>" CLEX_eqarrow
|
||||
#define STB_C_LEX_C_BITWISEEQ Y // "&=" CLEX_andeq "|=" CLEX_oreq "^=" CLEX_xoreq
|
||||
#define STB_C_LEX_C_ARITHEQ Y // "+=" CLEX_pluseq "-=" CLEX_minuseq
|
||||
// "*=" CLEX_muleq "/=" CLEX_diveq "%=" CLEX_modeq
|
||||
// if both STB_C_LEX_SHIFTS & STB_C_LEX_ARITHEQ:
|
||||
// "<<=" CLEX_shleq ">>=" CLEX_shreq
|
||||
|
||||
#define STB_C_LEX_PARSE_SUFFIXES N // letters after numbers are parsed as part of those numbers, and must be in suffix list below
|
||||
#define STB_C_LEX_DECIMAL_SUFFIXES "" // decimal integer suffixes e.g. "uUlL" -- these are returned as-is in string storage
|
||||
#define STB_C_LEX_HEX_SUFFIXES "" // e.g. "uUlL"
|
||||
#define STB_C_LEX_OCTAL_SUFFIXES "" // e.g. "uUlL"
|
||||
#define STB_C_LEX_FLOAT_SUFFIXES "" //
|
||||
|
||||
#define STB_C_LEX_0_IS_EOF Y // if Y, ends parsing at '\0'; if N, returns '\0' as token
|
||||
#define STB_C_LEX_INTEGERS_AS_DOUBLES N // parses integers as doubles so they can be larger than 'int', but only if STB_C_LEX_STDLIB==N
|
||||
#define STB_C_LEX_MULTILINE_DSTRINGS N // allow newlines in double-quoted strings
|
||||
#define STB_C_LEX_MULTILINE_SSTRINGS N // allow newlines in single-quoted strings
|
||||
#define STB_C_LEX_USE_STDLIB Y // use strtod,strtol for parsing #s; otherwise inaccurate hack
|
||||
#define STB_C_LEX_DOLLAR_IDENTIFIER Y // allow $ as an identifier character
|
||||
#define STB_C_LEX_FLOAT_NO_DECIMAL Y // allow floats that have no decimal point if they have an exponent
|
||||
|
||||
#define STB_C_LEX_DEFINE_ALL_TOKEN_NAMES N // if Y, all CLEX_ token names are defined, even if never returned
|
||||
// leaving it as N should help you catch config bugs
|
||||
|
||||
#define STB_C_LEX_DISCARD_PREPROCESSOR Y // discard C-preprocessor directives (e.g. after prepocess
|
||||
// still have #line, #pragma, etc)
|
||||
|
||||
//#define STB_C_LEX_ISWHITE(str) ... // return length in bytes of whitespace characters if first char is whitespace
|
||||
|
||||
#define STB_C_LEXER_DEFINITIONS // This line prevents the header file from replacing your definitions
|
||||
#endif
|
||||
|
||||
#include "stb_c_lexer.h"
|
||||
|
|
|
|||
Loading…
Reference in New Issue