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https://github.com/gbdev/rgbds.git
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7a587eb7d6
Bison 3.1 introduces "typed midrule values", which would write
`<captureTerminated>{ ... }` and `$$` instead of `{ ... }` and
`$<captureTerminated>[1-9]`, but rgbds supports 3.0 or even lower.
102 lines
2.1 KiB
C
102 lines
2.1 KiB
C
/*
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* This file is part of RGBDS.
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*
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* Copyright (c) 1997-2018, Carsten Sorensen and RGBDS contributors.
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*
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* SPDX-License-Identifier: MIT
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*/
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#ifndef RGBDS_ASM_LEXER_H
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#define RGBDS_ASM_LEXER_H
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#include <stdbool.h>
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#define MAXSTRLEN 255
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struct LexerState;
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extern struct LexerState *lexerState;
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extern struct LexerState *lexerStateEOL;
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static inline struct LexerState *lexer_GetState(void)
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{
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return lexerState;
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}
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static inline void lexer_SetState(struct LexerState *state)
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{
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lexerState = state;
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}
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static inline void lexer_SetStateAtEOL(struct LexerState *state)
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{
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lexerStateEOL = state;
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}
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extern char binDigits[2];
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extern char gfxDigits[4];
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static inline void lexer_SetBinDigits(char const digits[2])
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{
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binDigits[0] = digits[0];
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binDigits[1] = digits[1];
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}
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static inline void lexer_SetGfxDigits(char const digits[4])
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{
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gfxDigits[0] = digits[0];
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gfxDigits[1] = digits[1];
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gfxDigits[2] = digits[2];
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gfxDigits[3] = digits[3];
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}
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/*
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* `path` is referenced, but not held onto..!
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*/
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struct LexerState *lexer_OpenFile(char const *path);
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struct LexerState *lexer_OpenFileView(char *buf, size_t size, uint32_t lineNo);
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void lexer_RestartRept(uint32_t lineNo);
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void lexer_DeleteState(struct LexerState *state);
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void lexer_Init(void);
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enum LexerMode {
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LEXER_NORMAL,
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LEXER_RAW,
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LEXER_SKIP_TO_ELIF,
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LEXER_SKIP_TO_ENDC,
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LEXER_SKIP_TO_ENDR
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};
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void lexer_SetMode(enum LexerMode mode);
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void lexer_ToggleStringExpansion(bool enable);
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uint32_t lexer_GetIFDepth(void);
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void lexer_IncIFDepth(void);
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void lexer_DecIFDepth(void);
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bool lexer_RanIFBlock(void);
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bool lexer_ReachedELSEBlock(void);
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void lexer_RunIFBlock(void);
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void lexer_ReachELSEBlock(void);
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struct CaptureBody {
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uint32_t lineNo;
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char *body;
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size_t size;
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};
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char const *lexer_GetFileName(void);
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uint32_t lexer_GetLineNo(void);
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uint32_t lexer_GetColNo(void);
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void lexer_DumpStringExpansions(void);
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int yylex(void);
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bool lexer_CaptureRept(struct CaptureBody *capture);
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bool lexer_CaptureMacroBody(struct CaptureBody *capture);
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#define INITIAL_DS_ARG_SIZE 2
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struct DsArgList {
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size_t nbArgs;
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size_t capacity;
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struct Expression *args;
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};
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#endif /* RGBDS_ASM_LEXER_H */
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