2 // RMAC - Reboot's Macro Assembler for all Atari computers
3 // TOKEN.H - Token Handling
4 // Copyright (C) 199x Landon Dyer, 2011-2017 Reboot and Friends
5 // RMAC derived from MADMAC v1.07 Written by Landon Dyer, 1986
6 // Source utilised with the kind permission of Landon Dyer
14 // Include Files and Macros
15 #define SRC_IFILE 0 // Input source is IFILE
16 #define SRC_IMACRO 1 // Input source is IMACRO
17 #define SRC_IREPT 2 // Input source is IREPT
20 #define INOBJ struct _inobj
21 #define IUNION union _iunion
22 #define IFILE struct _incldfile
23 #define IMACRO struct _imacro
24 #define IREPT struct _irept
25 #define IFENT struct _ifent
27 // Tunable definitions
28 #define LNSIZ 1024 // Maximum size of a line of text
29 #define TOKBUFSIZE 400 // Size of token-line buffer
30 #define QUANTUM 4096L // # bytes to eat at a time from a file
31 #define LNBUFSIZ (QUANTUM*2) // Size of file's buffer
32 #define KWSIZE 7 // Maximum size of keyword in kwtab.h
34 // (Normally) non-printable tokens
35 #define COLON ':' // : (grumble: GNUmacs hates ':')
36 #define CONST 'a' // CONST <value>
37 #define ACONST 'A' // ACONST <value> <attrib>
38 #define STRING 'b' // STRING <address>
39 #define STRINGA8 'S' // Atari 800 internal STRING <address>
40 #define SYMBOL 'c' // SYMBOL <address>
41 #define EOL 'e' // End of line
42 #define TKEOF 'f' // End of file (or macro)
43 #define DEQUALS 'g' // ==
44 #define SET 0x95 // Set
45 #define REG 'R' // Reg
46 #define EQUREG 0x94 // equreg
47 #define CCDEF 0xB7 // ccdef
48 #define DCOLON 'h' // ::
51 #define NE 'k' // <> or !=
54 #define UNMINUS 'n' // Unary '-'
55 #define DOTB 'B' // .b or .B or .s or .S
56 #define DOTW 'W' // .w or .W
57 #define DOTL 'L' // .l or .L
58 #define DOTI 'I' // .l or .L
59 #define DOTX 'X' // .x or .X
60 #define DOTD 'D' // .d or .D
61 #define DOTP 'P' // .p or .P
62 #define DOTQ 'Q' // .q or .Q (essentially an alias for P)
63 #define DOTS 'S' // .s or .S (FPU Single)
64 #define ENDEXPR 'E' // End of expression
67 #define CR_DEFINED 'p' // ^^defined - is symbol defined?
68 #define CR_REFERENCED 'q' // ^^referenced - was symbol referenced?
69 #define CR_STREQ 'v' // ^^streq - compare two strings
70 #define CR_MACDEF 'w' // ^^macdef - is macro defined?
71 #define CR_TIME 'x' // ^^time - DOS format time
72 #define CR_DATE 'y' // ^^date - DOS format date
73 #define CR_ABSCOUNT 'z' // ^^abscount - count the number of bytes
74 // defined in curent .abs section
76 // Character Attributes
77 #define ILLEG 0 // Illegal character (unused)
78 #define DIGIT 1 // 0-9
79 #define HDIGIT 2 // A-F, a-f
80 #define STSYM 4 // A-Z, a-z, _~.
81 #define CTSYM 8 // A-Z, a-z, 0-9, _~$?
82 #define SELF 16 // Single-character tokens: ( ) [ ] etc
83 #define WHITE 32 // Whitespace (space, tab, etc.)
84 #define MULTX 64 // Multiple-character tokens
85 #define DOT 128 // [bwlsBWSL] for what follows a '.'
87 // Macro to check for specific optimizations or override
88 #define CHECK_OPTS(x) (optim_flags[x] && !optimizeOff)
90 // Conditional assembly structures
92 IFENT * if_prev; // Ptr prev .if state block (or NULL)
93 WORD if_state; // 0:enabled, 1:disabled
96 // Pointer to IFILE or IMACRO or IREPT
103 // Ptr to IFILEs, IMACROs, and so on; back-ptr to previous input objects
105 WORD in_type; // 0=IFILE, 1=IMACRO, 2=IREPT
106 IFENT * in_ifent; // Pointer to .if context on entry
107 INOBJ * in_link; // Pointer to previous INOBJ
108 TOKEN * in_otok; // Old `tok' value
109 TOKEN * in_etok; // Old `etok' value
110 IUNION inobj; // IFILE or IMACRO or IREPT
113 // Information about a file
115 IFILE * if_link; // Pointer to ancient IFILEs
116 char * ifoldfname; // Old file's name
117 int ifoldlineno; // Old line number
118 int ifind; // Position in file buffer
119 int ifcnt; // #chars left in file buffer
120 int ifhandle; // File's descriptor
121 WORD ifno; // File number
122 char ifbuf[LNBUFSIZ]; // Line buffer
125 #define TOKENSTREAM struct _tokenstream
127 TOKEN token[32]; // 32 ought to be enough for anybody (including XiA!)
128 char * string[32]; // same for attached strings
131 // Information about a macro invocation
133 IMACRO * im_link; // Pointer to ancient IMACROs
134 LLIST * im_nextln; // Next line to include
135 WORD im_nargs; // # of arguments supplied on invocation
136 WORD im_siz; // Size suffix supplied on invocation
137 LONG im_olduniq; // Old value of 'macuniq'
138 SYM * im_macro; // Pointer to macro we're in
139 char im_lnbuf[LNSIZ]; // Line buffer
140 TOKENSTREAM argument[20]; // Assume no more than 20 arguments in an invocation
143 // Information about a .rept invocation
145 LLIST * ir_firstln; // Pointer to first line
146 LLIST * ir_nextln; // Pointer to next line
147 VALUE ir_count; // Repeat count (decrements)
150 // Exported variables
152 extern uint16_t curlineno;
153 extern char * curfname;
158 extern char tolowertab[];
159 extern INOBJ * cur_inobj;
160 extern int mjump_align;
161 extern char * string[];
164 // Exported functions
165 int include(int, char *);
166 void InitTokenizer(void);
167 void SetFilenameForErrorReporting(void);
168 int TokenizeLine(void);
171 INOBJ * a_inobj(int);
172 void DumpTokenBuffer(void);
174 #endif // __TOKEN_H__