6 #include "walk_statements.h"
9 static void walk_expression(expression_t const *const expr,
10 statement_callback const callback, void *const env)
12 switch (expr->base.kind) {
14 walk_statements(expr->statement.statement, callback, env);
18 walk_expression(expr->binary.left, callback, env);
19 walk_expression(expr->binary.right, callback, env);
22 EXPR_UNARY_CASES_OPTIONAL
23 if (expr->unary.value == NULL)
26 EXPR_UNARY_CASES_MANDATORY
27 walk_expression(expr->unary.value, callback, env);
31 for (call_argument_t *arg = expr->call.arguments; arg != NULL;
33 walk_expression(arg->expression, callback, env);
39 panic("unexpected expr kind");
41 case EXPR_COMPOUND_LITERAL:
45 case EXPR_CONDITIONAL:
46 walk_expression(expr->conditional.condition, callback, env);
47 /* may be NULL because of gnu extension */
48 if (expr->conditional.true_expression != NULL)
49 walk_expression(expr->conditional.true_expression, callback, env);
50 walk_expression(expr->conditional.false_expression, callback, env);
53 case EXPR_BUILTIN_PREFETCH:
54 walk_expression(expr->builtin_prefetch.adr, callback, env);
55 walk_expression(expr->builtin_prefetch.rw, callback, env);
56 walk_expression(expr->builtin_prefetch.locality, callback, env);
59 case EXPR_BUILTIN_CONSTANT_P:
60 walk_expression(expr->builtin_constant.value, callback, env);
64 walk_expression(expr->select.compound, callback, env);
67 case EXPR_ARRAY_ACCESS:
68 walk_expression(expr->array_access.array_ref, callback, env);
69 walk_expression(expr->array_access.index, callback, env);
72 case EXPR_CLASSIFY_TYPE:
73 walk_expression(expr->classify_type.type_expression, callback, env);
78 expression_t *tp_expression = expr->typeprop.tp_expression;
79 if (tp_expression != NULL) {
80 walk_expression(tp_expression, callback, env);
87 case EXPR_REFERENCE_ENUM_VALUE:
89 case EXPR_CHARACTER_CONSTANT:
90 case EXPR_WIDE_CHARACTER_CONSTANT:
91 case EXPR_STRING_LITERAL:
92 case EXPR_WIDE_STRING_LITERAL:
94 case EXPR_BUILTIN_SYMBOL:
97 case EXPR_LABEL_ADDRESS:
101 /* TODO FIXME: implement all the missing expressions here */
104 static void walk_initializer(const initializer_t *initializer,
105 statement_callback callback,
108 switch(initializer->kind) {
109 case INITIALIZER_VALUE:
110 walk_expression(initializer->value.value, callback, env);
113 /* FIXME: should walk initializer hierarchies... */
118 static void walk_declarations(const entity_t* entity,
119 const entity_t* const end,
120 statement_callback const callback,
123 for (; entity != end; entity = entity->base.next) {
124 /* we only look at variables */
125 if (entity->kind != ENTITY_VARIABLE)
128 const variable_t *variable = &entity->variable;
129 const initializer_t *initializer = variable->initializer;
130 if (initializer != NULL) {
131 walk_initializer(initializer, callback, env);
137 void walk_statements(statement_t *const stmt, statement_callback const callback, void *const env)
141 switch (stmt->kind) {
142 case STATEMENT_COMPOUND:
143 for (statement_t *s = stmt->compound.statements; s != NULL; s = s->base.next) {
144 walk_statements(s, callback, env);
149 walk_declarations(stmt->fors.scope.entities, NULL, callback, env);
150 if (stmt->fors.initialisation != NULL)
151 walk_expression(stmt->fors.initialisation, callback, env);
152 if (stmt->fors.condition != NULL)
153 walk_expression(stmt->fors.condition, callback, env);
154 if (stmt->fors.step != NULL)
155 walk_expression(stmt->fors.step, callback, env);
156 walk_statements(stmt->fors.body, callback, env);
160 walk_expression(stmt->ifs.condition, callback, env);
161 walk_statements(stmt->ifs.true_statement, callback, env);
162 if (stmt->ifs.false_statement != NULL)
163 walk_statements(stmt->ifs.false_statement, callback, env);
166 case STATEMENT_SWITCH:
167 walk_expression(stmt->switchs.expression, callback, env);
168 walk_statements(stmt->switchs.body, callback, env);
171 case STATEMENT_LABEL:
172 walk_statements(stmt->label.statement, callback, env);
175 case STATEMENT_CASE_LABEL:
176 walk_statements(stmt->case_label.statement, callback, env);
179 case STATEMENT_WHILE:
180 walk_expression(stmt->whiles.condition, callback, env);
181 walk_statements(stmt->whiles.body, callback, env);
184 case STATEMENT_DO_WHILE:
185 walk_statements(stmt->do_while.body, callback, env);
186 walk_expression(stmt->do_while.condition, callback, env);
189 case STATEMENT_EXPRESSION:
190 walk_expression(stmt->expression.expression, callback, env);
193 case STATEMENT_RETURN:
194 if (stmt->returns.value != NULL)
195 walk_expression(stmt->returns.value, callback, env);
198 case STATEMENT_DECLARATION:
199 walk_declarations(stmt->declaration.declarations_begin,
200 stmt->declaration.declarations_end->base.next,
204 case STATEMENT_MS_TRY:
205 walk_statements(stmt->ms_try.try_statement, callback, env);
206 walk_statements(stmt->ms_try.final_statement, callback, env);
209 case STATEMENT_LOCAL_LABEL:
210 case STATEMENT_INVALID:
211 case STATEMENT_EMPTY:
212 case STATEMENT_CONTINUE:
213 case STATEMENT_BREAK:
216 case STATEMENT_LEAVE:
220 panic("unhandled statement");