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);
38 panic("unexpected expr kind");
40 case EXPR_COMPOUND_LITERAL:
44 case EXPR_CONDITIONAL:
45 walk_expression(expr->conditional.condition, callback, env);
46 /* may be NULL because of gnu extension */
47 if (expr->conditional.true_expression != NULL)
48 walk_expression(expr->conditional.true_expression, callback, env);
49 walk_expression(expr->conditional.false_expression, callback, env);
52 case EXPR_BUILTIN_CONSTANT_P:
53 walk_expression(expr->builtin_constant.value, callback, env);
57 walk_expression(expr->select.compound, callback, env);
60 case EXPR_ARRAY_ACCESS:
61 walk_expression(expr->array_access.array_ref, callback, env);
62 walk_expression(expr->array_access.index, callback, env);
65 case EXPR_CLASSIFY_TYPE:
66 walk_expression(expr->classify_type.type_expression, callback, env);
71 expression_t *tp_expression = expr->typeprop.tp_expression;
72 if (tp_expression != NULL) {
73 walk_expression(tp_expression, callback, env);
81 case EXPR_REFERENCE_ENUM_VALUE:
83 case EXPR_CHARACTER_CONSTANT:
84 case EXPR_WIDE_CHARACTER_CONSTANT:
85 case EXPR_STRING_LITERAL:
86 case EXPR_WIDE_STRING_LITERAL:
90 case EXPR_LABEL_ADDRESS:
91 case EXPR_BUILTIN_TYPES_COMPATIBLE_P:
95 /* TODO FIXME: implement all the missing expressions here */
98 static void walk_initializer(const initializer_t *initializer,
99 statement_callback callback,
102 switch(initializer->kind) {
103 case INITIALIZER_VALUE:
104 walk_expression(initializer->value.value, callback, env);
107 /* FIXME: should walk initializer hierarchies... */
112 static void walk_declarations(const entity_t* entity,
113 const entity_t* const last,
114 statement_callback const callback,
117 entity_t const *const end = last != NULL ? last->base.next : NULL;
118 for (; entity != end; entity = entity->base.next) {
119 /* we only look at variables */
120 if (entity->kind != ENTITY_VARIABLE)
123 const variable_t *variable = &entity->variable;
124 const initializer_t *initializer = variable->initializer;
125 if (initializer != NULL) {
126 walk_initializer(initializer, callback, env);
132 void walk_statements(statement_t *const stmt, statement_callback const callback, void *const env)
136 switch (stmt->kind) {
137 case STATEMENT_COMPOUND:
138 for (statement_t *s = stmt->compound.statements; s != NULL; s = s->base.next) {
139 walk_statements(s, callback, env);
144 walk_declarations(stmt->fors.scope.entities, NULL, callback, env);
145 if (stmt->fors.initialisation != NULL)
146 walk_expression(stmt->fors.initialisation, callback, env);
147 if (stmt->fors.condition != NULL)
148 walk_expression(stmt->fors.condition, callback, env);
149 if (stmt->fors.step != NULL)
150 walk_expression(stmt->fors.step, callback, env);
151 walk_statements(stmt->fors.body, callback, env);
155 walk_expression(stmt->ifs.condition, callback, env);
156 walk_statements(stmt->ifs.true_statement, callback, env);
157 if (stmt->ifs.false_statement != NULL)
158 walk_statements(stmt->ifs.false_statement, callback, env);
161 case STATEMENT_SWITCH:
162 walk_expression(stmt->switchs.expression, callback, env);
163 walk_statements(stmt->switchs.body, callback, env);
166 case STATEMENT_LABEL:
167 walk_statements(stmt->label.statement, callback, env);
170 case STATEMENT_CASE_LABEL:
171 walk_statements(stmt->case_label.statement, callback, env);
174 case STATEMENT_WHILE:
175 walk_expression(stmt->whiles.condition, callback, env);
176 walk_statements(stmt->whiles.body, callback, env);
179 case STATEMENT_DO_WHILE:
180 walk_statements(stmt->do_while.body, callback, env);
181 walk_expression(stmt->do_while.condition, callback, env);
184 case STATEMENT_EXPRESSION:
185 walk_expression(stmt->expression.expression, callback, env);
188 case STATEMENT_RETURN:
189 if (stmt->returns.value != NULL)
190 walk_expression(stmt->returns.value, callback, env);
193 case STATEMENT_DECLARATION:
194 walk_declarations(stmt->declaration.declarations_begin,
195 stmt->declaration.declarations_end, callback, env);
198 case STATEMENT_MS_TRY:
199 walk_statements(stmt->ms_try.try_statement, callback, env);
200 walk_statements(stmt->ms_try.final_statement, callback, env);
203 case STATEMENT_INVALID:
204 case STATEMENT_EMPTY:
205 case STATEMENT_CONTINUE:
206 case STATEMENT_BREAK:
209 case STATEMENT_LEAVE:
213 panic("unhandled statement");