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57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
#ifndef _LEX_H_
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#define _LEX_H_
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#include "tokens.h"
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typedef struct {
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int token; /* token we just parsed */
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int type; /* will be either T_INT, T_FLOAT, T_STRING, or T_SYMBOL */
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union {
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char *stringData;
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int intData;
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float floatData;
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};
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} LexData;
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extern LexData lexData;
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extern char *tokens[];
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#include <stdio.h>
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typedef struct {
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const char *name;
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int lastChar;
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int lineno;
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int column;
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int lastLineLen;
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// int lastColumn; // column of last token
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union {
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FILE *file;
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struct {
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char *string;
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int len;
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char *curpos;
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int readEOF;
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} s;
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};
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} InputStream;
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extern const char* AddFileName(const char *c);
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extern void FreeFileNames();
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extern void ungetToken(void);
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extern void setNextToken(LexData *data);
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extern int lex(void);
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extern void initLex(void), lexClose(void), lexClear(void);
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extern void startLex(InputStream *);
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extern void continueLex(InputStream *);
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extern int lexGetLineno(InputStream *);
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extern int lexGetColumn(InputStream *);
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extern const char *lexGetFilename(InputStream *);
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extern void lexAddToken(int token, char *name);
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extern void lexAddConstant(int c, char *name, int type, unsigned long val);
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char* lexGetToken(int token);
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#define INPUT_FILE 1
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#define INPUT_STRING 2
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#endif
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