core: silence some false positives from parsing invalid code
[smatch.git] / parse.h
blob8da07804728c64ba7e3b79a6f5d01327123ce6f1
1 #ifndef PARSE_H
2 #define PARSE_H
3 /*
4 * Basic parsing data structures. Statements and symbols.
6 * Copyright (C) 2003 Transmeta Corp.
7 * 2003 Linus Torvalds
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:
16 * The above copyright notice and this permission notice shall be included in
17 * all copies or substantial portions of the Software.
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.
28 #include "symbol.h"
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,
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;
55 struct {
56 struct expression *expression;
57 struct expression *context;
59 struct /* return_statement */ {
60 struct expression *ret_value;
61 struct symbol *ret_target;
63 struct /* if_statement */ {
64 struct expression *if_conditional;
65 struct statement *if_true;
66 struct statement *if_false;
68 struct /* compound_struct */ {
69 struct statement_list *stmts;
70 struct symbol *ret;
71 struct symbol *inline_fn;
72 struct statement *args;
74 struct /* labeled_struct */ {
75 struct symbol *label_identifier;
76 struct statement *label_statement;
78 struct /* case_struct */ {
79 struct expression *case_expression;
80 struct expression *case_to;
81 struct statement *case_statement;
82 struct symbol *case_label;
84 struct /* switch_struct */ {
85 struct expression *switch_expression;
86 struct statement *switch_statement;
87 struct symbol *switch_break, *switch_case;
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;
96 struct statement *iterator_statement;
98 struct statement *iterator_post_statement;
99 struct expression *iterator_post_condition;
101 struct /* goto_struct */ {
102 struct symbol *goto_label;
104 /* computed gotos have these: */
105 struct expression *goto_expression;
106 struct symbol_list *target_list;
108 struct /* goto_bb */ {
109 struct expression *bb_conditional;
110 struct symbol *bb_target;
112 struct /* multijmp */ {
113 struct expression *multi_from;
114 struct expression *multi_to;
115 struct symbol *multi_target;
117 struct /* asm */ {
118 struct expression *asm_string;
119 struct expression_list *asm_outputs;
120 struct expression_list *asm_inputs;
121 struct expression_list *asm_clobbers;
122 struct symbol_list *asm_labels;
124 struct /* range */ {
125 struct expression *range_expression;
126 struct expression *range_low;
127 struct expression *range_high;
132 extern struct symbol_list *function_computed_target_list;
133 extern struct statement_list *function_computed_goto_list;
135 extern struct token *parse_expression(struct token *, struct expression **);
136 extern struct symbol *label_symbol(struct token *token);
138 extern int show_statement(struct statement *);
139 extern void show_statement_list(struct statement_list *, const char *);
140 extern int show_expression(struct expression *);
142 extern struct token *external_declaration(struct token *token, struct symbol_list **list);
144 extern struct symbol *ctype_integer(int size, int want_unsigned);
146 extern void copy_statement(struct statement *src, struct statement *dst);
147 extern int inline_function(struct expression *expr, struct symbol *sym);
148 extern void uninline(struct symbol *sym);
149 extern void init_parser(int);
151 static inline void stmt_set_parent_stmt(struct statement *stmt, struct statement *parent)
153 if (!stmt)
154 return;
155 stmt->parent = parent;
158 #endif /* PARSE_H */