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Implement almost all functionality

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Add keywords and identifiers
Add comments
Add number literals
Add strings
Add a lot of new tokens
Add (and clean up) IF etc.
Improve reporting of unexpected chars / garbage bytes
Fix bug with and improved error messages when failing to open file
Add verbose-level messages about how files are opened
Enforce that files finish with a newline
Fix chars returned not being cast to unsigned char (may conflict w/ EOF)
Return null path when no file is open, rather than crash
Unify and improve error printing slightly

Known to be missing: macro expansion, REPT blocks, EQUS expansions
This commit is contained in:
ISSOtm
2020-07-28 22:06:03 +02:00
parent 71f8871702
commit 4c9a929a14
12 changed files with 1139 additions and 235 deletions
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9
include/asm/lexer.h
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@@ -33,10 +33,13 @@ static inline void lexer_SetStateAtEOL(struct LexerState *state)
struct LexerState *lexer_OpenFile(char const *path);
struct LexerState *lexer_OpenFileView(void);
void lexer_DeleteState(struct LexerState *state);
void lexer_Init(void);
enum LexerMode {
LEXER_NORMAL,
LEXER_RAW
LEXER_RAW,
LEXER_SKIP_TO_ELIF,
LEXER_SKIP_TO_ENDC
};
void lexer_SetMode(enum LexerMode mode);
@@ -47,7 +50,7 @@ uint32_t lexer_GetLineNo(void);
uint32_t lexer_GetColNo(void);
void lexer_DumpStringExpansions(void);
int yylex(void);
void lexer_SkipToBlockEnd(int blockStartToken, int blockEndToken, int endToken,
char const **capture, size_t *size, char const *name);
void lexer_CaptureBlock(int blockStartToken, int blockEndToken, char const **capture, size_t *size,
char const *name);
#endif /* RGBDS_ASM_LEXER_H */