1 #ifndef PARSE_H
2 #define PARSE_H
3 /*
4 * Basic parsing data structures. Statements and symbols.
5 *
6 * Copyright (C) 2003 Transmeta Corp.
7 * 2003 Linus Torvalds
8 *
9 * Permission is hereby granted, free of charge, to any person obtaining a copy
10 * of this software and associated documentation files (the "Software"), to deal
11 * in the Software without restriction, including without limitation the rights
12 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13 * copies of the Software, and to permit persons to whom the Software is
14 * furnished to do so, subject to the following conditions:
15 *
16 * The above copyright notice and this permission notice shall be included in
17 * all copies or substantial portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
22 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 * THE SOFTWARE.
26 */
27
28 #include "symbol.h"
29
30 enum statement_type {
31 STMT_NONE,
32 STMT_DECLARATION,
33 STMT_EXPRESSION,
34 STMT_COMPOUND,
35 STMT_IF,
36 STMT_RETURN,
37 STMT_CASE,
38 STMT_SWITCH,
39 STMT_ITERATOR,
40 STMT_LABEL,
41 STMT_GOTO,
42 STMT_ASM,
43 STMT_CONTEXT,
44 STMT_RANGE,
45 };
46
47 struct statement {
48 enum statement_type type;
49 struct position pos;
50 struct statement *parent;
51 union {
52 struct /* declaration */ {
53 struct symbol_list *declaration;
54 };
55 struct /* context */ {
56 struct expression *expression;
57 struct expression *context;
58 };
59 struct /* return_statement */ {
60 struct expression *ret_value;
61 struct symbol *ret_target;
62 };
63 struct /* if_statement */ {
64 struct expression *if_conditional;
65 struct statement *if_true;
66 struct statement *if_false;
67 };
68 struct /* compound_struct */ {
69 struct statement_list *stmts;
70 struct symbol *ret;
71 struct symbol *inline_fn;
72 struct statement *args;
73 };
74 struct /* labeled_struct */ {
75 struct symbol *label_identifier;
76 struct statement *label_statement;
77 };
78 struct /* case_struct */ {
79 struct expression *case_expression;
80 struct expression *case_to;
81 struct statement *case_statement;
82 struct symbol *case_label;
83 };
84 struct /* switch_struct */ {
85 struct expression *switch_expression;
86 struct statement *switch_statement;
87 struct symbol *switch_break, *switch_case;
88 };
89 struct /* iterator_struct */ {
90 struct symbol *iterator_break;
91 struct symbol *iterator_continue;
92 struct symbol_list *iterator_syms;
93 struct statement *iterator_pre_statement;
94 struct expression *iterator_pre_condition;
95
96 struct statement *iterator_statement;
97
98 struct statement *iterator_post_statement;
99 struct expression *iterator_post_condition;
100 };
101 struct /* goto_struct */ {
102 struct symbol *goto_label;
103
104 /* computed gotos have these: */
105 struct expression *goto_expression;
106 struct symbol_list *target_list;
107 };
108 struct /* asm */ {
109 struct expression *asm_string;
110 struct expression_list *asm_outputs;
111 struct expression_list *asm_inputs;
112 struct expression_list *asm_clobbers;
113 struct symbol_list *asm_labels;
114 };
115 struct /* range */ {
116 struct expression *range_expression;
117 struct expression *range_low;
118 struct expression *range_high;
119 };
120 };
121 };
122
123 extern struct symbol_list *function_computed_target_list;
124 extern struct statement_list *function_computed_goto_list;
125
126 extern struct token *parse_expression(struct token *, struct expression **);
127 extern struct symbol *label_symbol(struct token *token);
128
129 extern int show_statement(struct statement *);
130 extern void show_statement_list(struct statement_list *, const char *);
131 extern int show_expression(struct expression *);
132
133 typedef void (*validate_decl_t)(struct symbol *decl);
134 extern struct token *external_declaration(struct token *, struct symbol_list **, validate_decl_t);
135
136 extern struct symbol *ctype_integer(int size, int want_unsigned);
137
138 extern void copy_statement(struct statement *src, struct statement *dst);
139 extern int inline_function(struct expression *expr, struct symbol *sym);
140 extern void uninline(struct symbol *sym);
141 extern void init_parser(int);
142
143 static inline void stmt_set_parent_stmt(struct statement *stmt, struct statement *parent)
144 {
145 if (!stmt)
146 return;
147 stmt->parent = parent;
148 }
149
150 static inline struct statement *stmt_get_parent_stmt(struct statement *stmt)
151 {
152 return stmt->parent;
153 }
154
155 #endif /* PARSE_H */