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Implement almost all functionality

Browse Source 
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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4
include/asm/asm.h
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@@ -27,9 +27,5 @@
extern uint32_t nTotalLines;
extern uint32_t nIFDepth;
extern struct Section *pCurrentSection;
extern bool oDontExpandStrings;
size_t symvaluetostring(char *dest, size_t maxLength, char *sym,
const char *mode);
#endif /* RGBDS_ASM_ASM_H */

4
include/asm/fstack.h
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@@ -32,7 +32,7 @@ struct sContext {
uint32_t uniqueID;
int32_t nLine;
uint32_t nStatus;
char *pREPTBlock;
char const *pREPTBlock;
uint32_t nREPTBlockCount;
uint32_t nREPTBlockSize;
int32_t nREPTBodyFirstLine;
@@ -47,7 +47,7 @@ void fstk_Dump(void);
void fstk_DumpToStr(char *buf, size_t len);
void fstk_AddIncludePath(char *s);
void fstk_RunMacro(char *s, struct MacroArgs *args);
void fstk_RunRept(uint32_t count, int32_t nReptLineNo);
void fstk_RunRept(uint32_t count, int32_t nReptLineNo, char const *body, size_t size);
/**
* @param path The user-provided file name
* @param fullPath The address of a pointer, which will be made to point at the full path

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 */

7
include/asm/symbol.h
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@@ -44,8 +44,8 @@ struct Symbol {
int32_t (*callback)(void);
};
struct { /* For SYM_MACRO */
uint32_t macroSize;
char *macro;
size_t macroSize;
char const *macro;
};
};
@@ -114,9 +114,10 @@ void sym_Export(char const *symName);
struct Symbol *sym_AddEqu(char const *symName, int32_t value);
struct Symbol *sym_AddSet(char const *symName, int32_t value);
uint32_t sym_GetPCValue(void);
uint32_t sym_GetConstantSymValue(struct Symbol const *sym);
uint32_t sym_GetConstantValue(char const *s);
struct Symbol *sym_FindSymbol(char const *symName);
struct Symbol *sym_AddMacro(char const *symName, int32_t defLineNo);
struct Symbol *sym_AddMacro(char const *symName, int32_t defLineNo, char const *body, size_t size);
struct Symbol *sym_Ref(char const *symName);
struct Symbol *sym_AddString(char const *symName, char const *value);
uint32_t sym_GetDefinedValue(char const *s);

1
include/asm/util.h
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@@ -12,6 +12,7 @@
#include <stdint.h>
uint32_t calchash(const char *s);
char const *print(char c);
size_t readUTF8Char(uint8_t *dest, char const *src);
#endif /* RGBDS_UTIL_H */