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1 | /* |
2 | ||
3 | TREELANG Compiler common definitions (treelang.h) | |
4 | ||
27f94314 | 5 | Copyright (C) 1986, 87, 89, 92-96, 1997, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. |
6cfea11b TJ |
6 | |
7 | This program is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU General Public License as published by the | |
9 | Free Software Foundation; either version 2, or (at your option) any | |
10 | later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. | |
21 | ||
22 | In other words, you are welcome to use, share and improve this program. | |
23 | You are forbidden to forbid anyone else to use, share and improve | |
24 | what you give them. Help stamp out software-hoarding! | |
25 | ||
26 | --------------------------------------------------------------------------- | |
27 | ||
28 | Written by Tim Josling 1999, 2000, 2001, based in part on other | |
29 | parts of the GCC compiler. | |
30 | ||
31 | */ | |
32 | ||
33 | /* Parse structure type. */ | |
34 | enum category_enum | |
35 | { /* These values less likely to be there by chance unlike 0/1, | |
36 | make checks more meaningful */ | |
37 | token_category = 111, | |
96e3ac4f TJ |
38 | production_category = 222, |
39 | parameter_category = 333 | |
6cfea11b TJ |
40 | }; |
41 | ||
42 | /* Input file name and FILE. */ | |
4bfec483 | 43 | extern const char* in_fname; |
6cfea11b TJ |
44 | extern FILE* yyin; |
45 | ||
96e3ac4f TJ |
46 | /* Forward references to satisfy mutually recursive definitions. */ |
47 | struct token_part; | |
48 | struct production_part; | |
49 | struct prod_token_parm_item; | |
50 | typedef struct GTY(()) prod_token_parm_item item; | |
6cfea11b | 51 | |
96e3ac4f TJ |
52 | /* A token from the input file. */ |
53 | ||
54 | struct token_part GTY(()) | |
6cfea11b | 55 | { |
6cfea11b TJ |
56 | unsigned int lineno; |
57 | unsigned int charno; | |
58 | unsigned int length; /* The value. */ | |
59 | unsigned char* chars; | |
60 | }; | |
61 | ||
96e3ac4f TJ |
62 | /* Definitions for fields in production. */ |
63 | #define NESTING_LEVEL(a) a->tp.pro.info[0] /* Level used for variable definitions. */ | |
64 | #define NUMERIC_TYPE(a) a->tp.pro.info[1] /* Numeric type used in type definitions and expressions. */ | |
65 | #define SUB_COUNT 5 | |
66 | #define SYMBOL_TABLE_NAME(a) (a->tp.pro.sub[0]) /* Name token. */ | |
67 | #define EXPRESSION_TYPE(a) (a->tp.pro.sub[1]) /* Type identifier. */ | |
68 | #define OP1(a) (a->tp.pro.sub[2]) /* Exp operand1. */ | |
69 | #define PARAMETERS(a) (a->tp.pro.sub[2]) /* Function parameters. */ | |
70 | #define VARIABLE(a) (a->tp.pro.sub[2]) /* Parameter variable ptr. */ | |
71 | #define VAR_INIT(a) (a->tp.pro.sub[2]) /* Variable init. */ | |
72 | #define OP2(a) (a->tp.pro.sub[3]) /* Exp operand2. */ | |
73 | #define FIRST_PARMS(a) (a->tp.pro.sub[3]) /* Function parameters linked via struct tree_parameter_list. */ | |
74 | #define OP3(a) (a->tp.pro.sub[4]) /* Exp operand3. */ | |
75 | #define STORAGE_CLASS_TOKEN(a) (a->tp.pro.sub[4]) /* Storage class token. */ | |
76 | #define STORAGE_CLASS(a) a->tp.pro.flag1 /* Values in treetree.h. */ | |
77 | ||
78 | struct production_part GTY(()) | |
6cfea11b | 79 | { |
96e3ac4f | 80 | struct prod_token_parm_item *main_token; /* Main token for error msgs; variable name token. */ |
6cfea11b TJ |
81 | |
82 | unsigned int info[2]; /* Extra information. */ | |
6cfea11b | 83 | |
96e3ac4f TJ |
84 | struct prod_token_parm_item *sub[SUB_COUNT]; /* Sub productions or tokens. */ |
85 | tree code; /* Back end hook for this item. */ | |
86 | struct prod_token_parm_item *next; /* Next in chains of various types. */ | |
6cfea11b TJ |
87 | |
88 | unsigned int flag1:2; | |
6cfea11b TJ |
89 | unsigned int flag2:1; |
90 | unsigned int flag3:1; | |
91 | unsigned int flag4:1; | |
92 | unsigned int flag5:1; | |
93 | unsigned int flag6:1; | |
94 | unsigned int flag7:1; | |
95 | ||
96 | }; | |
97 | ||
96e3ac4f TJ |
98 | /* Storage modes. */ |
99 | #define STATIC_STORAGE 0 | |
100 | #define AUTOMATIC_STORAGE 1 | |
101 | #define EXTERNAL_REFERENCE_STORAGE 2 | |
102 | #define EXTERNAL_DEFINITION_STORAGE 3 | |
103 | ||
104 | /* Numeric types. */ | |
105 | #define SIGNED_CHAR 1 | |
106 | #define UNSIGNED_CHAR 2 | |
107 | #define SIGNED_INT 3 | |
108 | #define UNSIGNED_INT 4 | |
109 | #define VOID_TYPE 5 | |
110 | ||
111 | /* Expression types. */ | |
112 | #define EXP_PLUS 0 /* Addition expression. */ | |
113 | #define EXP_REFERENCE 1 /* Variable reference. */ | |
114 | #define EXP_ASSIGN 2 /* Assignment. */ | |
115 | #define EXP_FUNCTION_INVOCATION 3 /* Call function. */ | |
116 | #define EXP_MINUS 4 /* Subtraction. */ | |
117 | #define EXP_EQUALS 5 /* Equality test. */ | |
118 | ||
119 | /* Parameter list passed to back end. */ | |
120 | struct parameter_part GTY(()) | |
121 | { | |
122 | struct prod_token_parm_item *next; /* Next entry. */ | |
123 | unsigned char* variable_name; /* Name. */ | |
124 | tree * GTY ((length ("1"))) where_to_put_var_tree; /* Where to save decl. */ | |
125 | }; | |
126 | ||
127 | /* A production or a token. */ | |
128 | struct prod_token_parm_item GTY(()) | |
129 | { | |
130 | enum category_enum category; /* Token or production. */ | |
131 | unsigned int type; /* Token or production type. */ | |
132 | union t_or_p | |
133 | { | |
134 | struct token_part GTY((tag ("token_category"))) tok; | |
135 | struct production_part GTY((tag ("production_category"))) pro; | |
136 | struct parameter_part GTY((tag ("parameter_category"))) par; | |
137 | } GTY((desc ("((item *)&%1)->category"))) tp; | |
138 | }; | |
139 | ||
140 | ||
6cfea11b TJ |
141 | /* For parser. Alternatively you can define it using %union (bison) or |
142 | union. */ | |
143 | #define YYSTYPE void * | |
144 | ||
145 | void *my_malloc (size_t size); | |
96e3ac4f TJ |
146 | int insert_tree_name (struct prod_token_parm_item *prod); |
147 | struct prod_token_parm_item *lookup_tree_name (struct prod_token_parm_item *prod); | |
148 | struct prod_token_parm_item *make_production (int type, struct prod_token_parm_item *main_tok); | |
149 | void mark_production_used (struct prod_token_parm_item *pp); | |
150 | void mark_token_used (struct prod_token_parm_item *tt); | |
6cfea11b TJ |
151 | void treelang_debug (void); |
152 | ||
27f94314 | 153 | void sanity_check (struct prod_token_parm_item *item); |