static FILE *out;
static int indent;
+static int print_implicit_casts = 1;
static void print_statement(const statement_t *statement);
fprintf(out, "\t");
}
-static void print_const(const const_t *cnst)
+static void print_const(const const_expression_t *cnst)
{
if(cnst->expression.datatype == NULL)
return;
}
}
-static void print_string_literal(const string_literal_t *string_literal)
+static void print_quoted_string(const string_t *const string)
{
fputc('"', out);
- for(const char *c = string_literal->value; *c != '\0'; ++c) {
+ for (const char *c = string->begin, *const end = c + string->size; c != end; ++c) {
switch(*c) {
case '\"': fputs("\\\"", out); break;
case '\\': fputs("\\\\", out); break;
case '\?': fputs("\\?", out); break;
default:
if(!isprint(*c)) {
- fprintf(out, "\\x%x", *c);
+ fprintf(out, "\\%03o", *c);
break;
}
fputc(*c, out);
fputc('"', out);
}
+static void print_string_literal(
+ const string_literal_expression_t *string_literal)
+{
+ print_quoted_string(&string_literal->value);
+}
+
+static void print_wide_string_literal(
+ const wide_string_literal_expression_t *const wstr)
+{
+ fputs("L\"", out);
+ for (const wchar_rep_t *c = wstr->value.begin,
+ *end = c + wstr->value.size;
+ c != end; ++c) {
+ switch (*c) {
+ case L'\"': fputs("\\\"", out); break;
+ case L'\\': fputs("\\\\", out); break;
+ case L'\a': fputs("\\a", out); break;
+ case L'\b': fputs("\\b", out); break;
+ case L'\f': fputs("\\f", out); break;
+ case L'\n': fputs("\\n", out); break;
+ case L'\r': fputs("\\r", out); break;
+ case L'\t': fputs("\\t", out); break;
+ case L'\v': fputs("\\v", out); break;
+ case L'\?': fputs("\\?", out); break;
+ default: {
+ const unsigned tc = *c;
+ if (tc < 0x80U) {
+ if (!isprint(*c)) {
+ fprintf(out, "\\%03o", (char)*c);
+ } else {
+ fputc(*c, out);
+ }
+ } else if (tc < 0x800) {
+ fputc(0xC0 | (tc >> 6), out);
+ fputc(0x80 | (tc & 0x3F), out);
+ } else if (tc < 0x10000) {
+ fputc(0xE0 | ( tc >> 12), out);
+ fputc(0x80 | ((tc >> 6) & 0x3F), out);
+ fputc(0x80 | ( tc & 0x3F), out);
+ } else {
+ fputc(0xF0 | ( tc >> 18), out);
+ fputc(0x80 | ((tc >> 12) & 0x3F), out);
+ fputc(0x80 | ((tc >> 6) & 0x3F), out);
+ fputc(0x80 | ( tc & 0x3F), out);
+ }
+ }
+ }
+ }
+ fputc('"', out);
+}
+
static void print_call_expression(const call_expression_t *call)
{
print_expression(call->function);
static void print_binary_expression(const binary_expression_t *binexpr)
{
+ if(binexpr->expression.kind == EXPR_BINARY_BUILTIN_EXPECT) {
+ fputs("__builtin_expect(", out);
+ print_expression(binexpr->left);
+ fputs(", ", out);
+ print_expression(binexpr->right);
+ fputs(")", out);
+ return;
+ }
+
fprintf(out, "(");
print_expression(binexpr->left);
fprintf(out, " ");
- switch(binexpr->type) {
- case BINEXPR_INVALID: fputs("INVOP", out); break;
- case BINEXPR_COMMA: fputs(",", out); break;
- case BINEXPR_ASSIGN: fputs("=", out); break;
- case BINEXPR_ADD: fputs("+", out); break;
- case BINEXPR_SUB: fputs("-", out); break;
- case BINEXPR_MUL: fputs("*", out); break;
- case BINEXPR_MOD: fputs("%", out); break;
- case BINEXPR_DIV: fputs("/", out); break;
- case BINEXPR_BITWISE_OR: fputs("|", out); break;
- case BINEXPR_BITWISE_AND: fputs("&", out); break;
- case BINEXPR_BITWISE_XOR: fputs("^", out); break;
- case BINEXPR_LOGICAL_OR: fputs("||", out); break;
- case BINEXPR_LOGICAL_AND: fputs("&&", out); break;
- case BINEXPR_NOTEQUAL: fputs("!=", out); break;
- case BINEXPR_EQUAL: fputs("==", out); break;
- case BINEXPR_LESS: fputs("<", out); break;
- case BINEXPR_LESSEQUAL: fputs("<=", out); break;
- case BINEXPR_GREATER: fputs(">", out); break;
- case BINEXPR_GREATEREQUAL: fputs(">=", out); break;
- case BINEXPR_SHIFTLEFT: fputs("<<", out); break;
- case BINEXPR_SHIFTRIGHT: fputs(">>", out); break;
-
- case BINEXPR_ADD_ASSIGN: fputs("+=", out); break;
- case BINEXPR_SUB_ASSIGN: fputs("-=", out); break;
- case BINEXPR_MUL_ASSIGN: fputs("*=", out); break;
- case BINEXPR_MOD_ASSIGN: fputs("%=", out); break;
- case BINEXPR_DIV_ASSIGN: fputs("/=", out); break;
- case BINEXPR_BITWISE_OR_ASSIGN: fputs("|=", out); break;
- case BINEXPR_BITWISE_AND_ASSIGN: fputs("&=", out); break;
- case BINEXPR_BITWISE_XOR_ASSIGN: fputs("^=", out); break;
- case BINEXPR_SHIFTLEFT_ASSIGN: fputs("<<=", out); break;
- case BINEXPR_SHIFTRIGHT_ASSIGN: fputs(">>=", out); break;
+ switch(binexpr->expression.kind) {
+ case EXPR_BINARY_COMMA: fputs(",", out); break;
+ case EXPR_BINARY_ASSIGN: fputs("=", out); break;
+ case EXPR_BINARY_ADD: fputs("+", out); break;
+ case EXPR_BINARY_SUB: fputs("-", out); break;
+ case EXPR_BINARY_MUL: fputs("*", out); break;
+ case EXPR_BINARY_MOD: fputs("%", out); break;
+ case EXPR_BINARY_DIV: fputs("/", out); break;
+ case EXPR_BINARY_BITWISE_OR: fputs("|", out); break;
+ case EXPR_BINARY_BITWISE_AND: fputs("&", out); break;
+ case EXPR_BINARY_BITWISE_XOR: fputs("^", out); break;
+ case EXPR_BINARY_LOGICAL_OR: fputs("||", out); break;
+ case EXPR_BINARY_LOGICAL_AND: fputs("&&", out); break;
+ case EXPR_BINARY_NOTEQUAL: fputs("!=", out); break;
+ case EXPR_BINARY_EQUAL: fputs("==", out); break;
+ case EXPR_BINARY_LESS: fputs("<", out); break;
+ case EXPR_BINARY_LESSEQUAL: fputs("<=", out); break;
+ case EXPR_BINARY_GREATER: fputs(">", out); break;
+ case EXPR_BINARY_GREATEREQUAL: fputs(">=", out); break;
+ case EXPR_BINARY_SHIFTLEFT: fputs("<<", out); break;
+ case EXPR_BINARY_SHIFTRIGHT: fputs(">>", out); break;
+
+ case EXPR_BINARY_ADD_ASSIGN: fputs("+=", out); break;
+ case EXPR_BINARY_SUB_ASSIGN: fputs("-=", out); break;
+ case EXPR_BINARY_MUL_ASSIGN: fputs("*=", out); break;
+ case EXPR_BINARY_MOD_ASSIGN: fputs("%=", out); break;
+ case EXPR_BINARY_DIV_ASSIGN: fputs("/=", out); break;
+ case EXPR_BINARY_BITWISE_OR_ASSIGN: fputs("|=", out); break;
+ case EXPR_BINARY_BITWISE_AND_ASSIGN: fputs("&=", out); break;
+ case EXPR_BINARY_BITWISE_XOR_ASSIGN: fputs("^=", out); break;
+ case EXPR_BINARY_SHIFTLEFT_ASSIGN: fputs("<<=", out); break;
+ case EXPR_BINARY_SHIFTRIGHT_ASSIGN: fputs(">>=", out); break;
+ default: panic("invalid binexpression found");
}
fprintf(out, " ");
print_expression(binexpr->right);
static void print_unary_expression(const unary_expression_t *unexpr)
{
- switch(unexpr->type) {
- case UNEXPR_NEGATE: fputs("-", out); break;
- case UNEXPR_PLUS: fputs("+", out); break;
- case UNEXPR_NOT: fputs("!", out); break;
- case UNEXPR_BITWISE_NEGATE: fputs("~", out); break;
- case UNEXPR_PREFIX_INCREMENT: fputs("++", out); break;
- case UNEXPR_PREFIX_DECREMENT: fputs("--", out); break;
- case UNEXPR_DEREFERENCE: fputs("*", out); break;
- case UNEXPR_TAKE_ADDRESS: fputs("&", out); break;
-
- case UNEXPR_POSTFIX_INCREMENT:
+ switch(unexpr->expression.kind) {
+ case EXPR_UNARY_NEGATE: fputs("-", out); break;
+ case EXPR_UNARY_PLUS: fputs("+", out); break;
+ case EXPR_UNARY_NOT: fputs("!", out); break;
+ case EXPR_UNARY_BITWISE_NEGATE: fputs("~", out); break;
+ case EXPR_UNARY_PREFIX_INCREMENT: fputs("++", out); break;
+ case EXPR_UNARY_PREFIX_DECREMENT: fputs("--", out); break;
+ case EXPR_UNARY_DEREFERENCE: fputs("*", out); break;
+ case EXPR_UNARY_TAKE_ADDRESS: fputs("&", out); break;
+
+ case EXPR_UNARY_BITFIELD_EXTRACT:
+ print_expression(unexpr->value);
+ return;
+
+ case EXPR_UNARY_POSTFIX_INCREMENT:
fputs("(", out);
print_expression(unexpr->value);
fputs(")", out);
fputs("++", out);
return;
- case UNEXPR_POSTFIX_DECREMENT:
+ case EXPR_UNARY_POSTFIX_DECREMENT:
fputs("(", out);
print_expression(unexpr->value);
fputs(")", out);
fputs("--", out);
return;
- case UNEXPR_CAST:
+ case EXPR_UNARY_CAST_IMPLICIT:
+ if(!print_implicit_casts) {
+ print_expression(unexpr->value);
+ return;
+ }
+ /* fallthrough */
+ case EXPR_UNARY_CAST:
fputs("(", out);
print_type(unexpr->expression.datatype);
fputs(")", out);
break;
- case UNEXPR_INVALID:
- fprintf(out, "unop%d", (int) unexpr->type);
+ case EXPR_UNARY_ASSUME:
+ fputs("__assume", out);
break;
+ default:
+ panic("invalid unary expression found");
}
fputs("(", out);
print_expression(unexpr->value);
static void print_array_expression(const array_access_expression_t *expression)
{
- fputs("(", out);
- print_expression(expression->array_ref);
- fputs(")[", out);
- print_expression(expression->index);
- fputs("]", out);
+ if(!expression->flipped) {
+ fputs("(", out);
+ print_expression(expression->array_ref);
+ fputs(")[", out);
+ print_expression(expression->index);
+ fputs("]", out);
+ } else {
+ fputs("(", out);
+ print_expression(expression->index);
+ fputs(")[", out);
+ print_expression(expression->array_ref);
+ fputs("]", out);
+ }
}
static void print_sizeof_expression(const sizeof_expression_t *expression)
}
}
+static void print_alignof_expression(const alignof_expression_t *expression)
+{
+ fputs("__alignof__(", out);
+ print_type(expression->type);
+ fputc(')', out);
+}
+
static void print_builtin_symbol(const builtin_symbol_expression_t *expression)
{
fputs(expression->symbol->string, out);
}
+static void print_builtin_constant(const builtin_constant_expression_t *expression)
+{
+ fputs("__builtin_constant_p(", out);
+ print_expression(expression->value);
+ fputc(')', out);
+}
+
+static void print_builtin_prefetch(const builtin_prefetch_expression_t *expression)
+{
+ fputs("__builtin_prefetch(", out);
+ print_expression(expression->adr);
+ if (expression->rw) {
+ fputc(',', out);
+ print_expression(expression->rw);
+ }
+ if (expression->locality) {
+ fputc(',', out);
+ print_expression(expression->locality);
+ }
+ fputc(')', out);
+}
+
static void print_conditional(const conditional_expression_t *expression)
{
fputs("(", out);
fputs(")", out);
}
+static void print_va_start(const va_start_expression_t *const expression)
+{
+ fputs("__builtin_va_start(", out);
+ print_expression(expression->ap);
+ fputs(", ", out);
+ fputs(expression->parameter->symbol->string, out);
+ fputs(")", out);
+}
+
static void print_va_arg(const va_arg_expression_t *expression)
{
fputs("__builtin_va_arg(", out);
- print_expression(expression->arg);
+ print_expression(expression->ap);
fputs(", ", out);
print_type(expression->expression.datatype);
fputs(")", out);
static void print_select(const select_expression_t *expression)
{
print_expression(expression->compound);
- if(expression->compound->datatype == NULL ||
- expression->compound->datatype->type == TYPE_POINTER) {
+ if(expression->compound->base.datatype == NULL ||
+ expression->compound->base.datatype->kind == TYPE_POINTER) {
fputs("->", out);
} else {
fputc('.', out);
fputc(')', out);
}
+static void print_designator(const designator_t *designator)
+{
+ fputs(designator->symbol->string, out);
+ for (designator = designator->next; designator != NULL; designator = designator->next) {
+ if (designator->array_access) {
+ fputc('[', out);
+ print_expression(designator->array_access);
+ fputc(']', out);
+ } else {
+ fputc('.', out);
+ fputs(designator->symbol->string, out);
+ }
+ }
+}
+
+static void print_offsetof_expression(const offsetof_expression_t *expression)
+{
+ fputs("__builtin_offsetof", out);
+ fputc('(', out);
+ print_type(expression->type);
+ fputc(',', out);
+ print_designator(expression->designator);
+ fputc(')', out);
+}
+
+static void print_statement_expression(const statement_expression_t *expression)
+{
+ fputc('(', out);
+ print_statement(expression->statement);
+ fputc(')', out);
+}
+
void print_expression(const expression_t *expression)
{
- switch(expression->type) {
+ switch(expression->kind) {
case EXPR_UNKNOWN:
case EXPR_INVALID:
fprintf(out, "*invalid expression*");
break;
case EXPR_CONST:
- print_const((const const_t*) expression);
+ print_const(&expression->conste);
break;
case EXPR_FUNCTION:
case EXPR_PRETTY_FUNCTION:
case EXPR_STRING_LITERAL:
- print_string_literal((const string_literal_t*) expression);
+ print_string_literal(&expression->string);
+ break;
+ case EXPR_WIDE_STRING_LITERAL:
+ print_wide_string_literal(&expression->wide_string);
break;
case EXPR_CALL:
- print_call_expression((const call_expression_t*) expression);
+ print_call_expression(&expression->call);
break;
- case EXPR_BINARY:
- print_binary_expression((const binary_expression_t*) expression);
+ EXPR_BINARY_CASES
+ print_binary_expression(&expression->binary);
break;
case EXPR_REFERENCE:
- print_reference_expression((const reference_expression_t*) expression);
+ print_reference_expression(&expression->reference);
break;
case EXPR_ARRAY_ACCESS:
- print_array_expression((const array_access_expression_t*) expression);
+ print_array_expression(&expression->array_access);
break;
- case EXPR_UNARY:
- print_unary_expression((const unary_expression_t*) expression);
+ EXPR_UNARY_CASES
+ print_unary_expression(&expression->unary);
break;
case EXPR_SIZEOF:
- print_sizeof_expression((const sizeof_expression_t*) expression);
+ print_sizeof_expression(&expression->sizeofe);
+ break;
+ case EXPR_ALIGNOF:
+ print_alignof_expression(&expression->alignofe);
break;
case EXPR_BUILTIN_SYMBOL:
- print_builtin_symbol((const builtin_symbol_expression_t*) expression);
+ print_builtin_symbol(&expression->builtin_symbol);
+ break;
+ case EXPR_BUILTIN_CONSTANT_P:
+ print_builtin_constant(&expression->builtin_constant);
+ break;
+ case EXPR_BUILTIN_PREFETCH:
+ print_builtin_prefetch(&expression->builtin_prefetch);
break;
case EXPR_CONDITIONAL:
- print_conditional((const conditional_expression_t*) expression);
+ print_conditional(&expression->conditional);
+ break;
+ case EXPR_VA_START:
+ print_va_start(&expression->va_starte);
break;
case EXPR_VA_ARG:
- print_va_arg((const va_arg_expression_t*) expression);
+ print_va_arg(&expression->va_arge);
break;
case EXPR_SELECT:
- print_select((const select_expression_t*) expression);
+ print_select(&expression->select);
break;
case EXPR_CLASSIFY_TYPE:
- print_classify_type_expression((const classify_type_expression_t*)expression);
+ print_classify_type_expression(&expression->classify_type);
break;
-
case EXPR_OFFSETOF:
+ print_offsetof_expression(&expression->offsetofe);
+ break;
case EXPR_STATEMENT:
+ print_statement_expression(&expression->statement);
+ break;
+
+ default:
/* TODO */
- fprintf(out, "some expression of type %d", (int) expression->type);
+ fprintf(out, "some expression of type %d", (int) expression->kind);
break;
}
}
print_indent();
print_statement(statement);
- statement = statement->next;
+ statement = statement->base.next;
}
indent--;
print_indent();
print_statement(statement->body);
}
+static void print_asm_constraints(asm_constraint_t *constraints)
+{
+ asm_constraint_t *constraint = constraints;
+ for( ; constraint != NULL; constraint = constraint->next) {
+ if(constraint != constraints)
+ fputs(", ", out);
+
+ if(constraint->symbol) {
+ fprintf(out, "[%s] ", constraint->symbol->string);
+ }
+ print_quoted_string(&constraint->constraints);
+ fputs(" (", out);
+ print_expression(constraint->expression);
+ fputs(")", out);
+ }
+}
+
+static void print_asm_clobbers(asm_clobber_t *clobbers)
+{
+ asm_clobber_t *clobber = clobbers;
+ for( ; clobber != NULL; clobber = clobber->next) {
+ if(clobber != clobbers)
+ fputs(", ", out);
+
+ print_quoted_string(&clobber->clobber);
+ }
+}
+
+static void print_asm_statement(const asm_statement_t *statement)
+{
+ fputs("asm ", out);
+ if(statement->is_volatile) {
+ fputs("volatile ", out);
+ }
+ fputs("(", out);
+ print_quoted_string(&statement->asm_text);
+ if(statement->inputs == NULL && statement->outputs == NULL
+ && statement->clobbers == NULL)
+ goto end_of_print_asm_statement;
+
+ fputs(" : ", out);
+ print_asm_constraints(statement->inputs);
+ if(statement->outputs == NULL && statement->clobbers == NULL)
+ goto end_of_print_asm_statement;
+
+ fputs(" : ", out);
+ print_asm_constraints(statement->outputs);
+ if(statement->clobbers == NULL)
+ goto end_of_print_asm_statement;
+
+ fputs(" : ", out);
+ print_asm_clobbers(statement->clobbers);
+
+end_of_print_asm_statement:
+ fputs(");\n", out);
+}
+
void print_statement(const statement_t *statement)
{
- switch(statement->type) {
+ switch(statement->kind) {
case STATEMENT_COMPOUND:
- print_compound_statement((const compound_statement_t*) statement);
+ print_compound_statement(&statement->compound);
break;
case STATEMENT_RETURN:
- print_return_statement((const return_statement_t*) statement);
+ print_return_statement(&statement->returns);
break;
case STATEMENT_EXPRESSION:
- print_expression_statement((const expression_statement_t*) statement);
+ print_expression_statement(&statement->expression);
break;
case STATEMENT_LABEL:
- print_label_statement((const label_statement_t*) statement);
+ print_label_statement(&statement->label);
break;
case STATEMENT_GOTO:
- print_goto_statement((const goto_statement_t*) statement);
+ print_goto_statement(&statement->gotos);
break;
case STATEMENT_CONTINUE:
fputs("continue;\n", out);
fputs("break;\n", out);
break;
case STATEMENT_IF:
- print_if_statement((const if_statement_t*) statement);
+ print_if_statement(&statement->ifs);
break;
case STATEMENT_SWITCH:
- print_switch_statement((const switch_statement_t*) statement);
+ print_switch_statement(&statement->switchs);
break;
case STATEMENT_CASE_LABEL:
- print_case_label((const case_label_statement_t*) statement);
+ print_case_label(&statement->case_label);
break;
case STATEMENT_DECLARATION:
- print_declaration_statement((const declaration_statement_t*) statement);
+ print_declaration_statement(&statement->declaration);
break;
case STATEMENT_WHILE:
- print_while_statement((const while_statement_t*) statement);
+ print_while_statement(&statement->whiles);
break;
case STATEMENT_DO_WHILE:
- print_do_while_statement((const do_while_statement_t*) statement);
+ print_do_while_statement(&statement->do_while);
break;
case STATEMENT_FOR:
- print_for_statement((const for_statement_t*) statement);
+ print_for_statement(&statement->fors);
+ break;
+ case STATEMENT_ASM:
+ print_asm_statement(&statement->asms);
break;
case STATEMENT_INVALID:
fprintf(out, "*invalid statement*");
}
}
-static void print_storage_class(storage_class_t storage_class)
+static void print_storage_class(unsigned storage_class)
{
- switch(storage_class) {
+ switch((storage_class_tag_t) storage_class) {
case STORAGE_CLASS_ENUM_ENTRY:
case STORAGE_CLASS_NONE:
break;
- case STORAGE_CLASS_TYPEDEF: fputs("typedef ", out); break;
- case STORAGE_CLASS_EXTERN: fputs("extern ", out); break;
- case STORAGE_CLASS_STATIC: fputs("static ", out); break;
- case STORAGE_CLASS_AUTO: fputs("auto ", out); break;
- case STORAGE_CLASS_REGISTER: fputs("register ", out); break;
+ case STORAGE_CLASS_TYPEDEF: fputs("typedef ", out); break;
+ case STORAGE_CLASS_EXTERN: fputs("extern ", out); break;
+ case STORAGE_CLASS_STATIC: fputs("static ", out); break;
+ case STORAGE_CLASS_AUTO: fputs("auto ", out); break;
+ case STORAGE_CLASS_REGISTER: fputs("register ", out); break;
+ case STORAGE_CLASS_THREAD: fputs("__thread", out); break;
+ case STORAGE_CLASS_THREAD_EXTERN: fputs("extern __thread", out); break;
+ case STORAGE_CLASS_THREAD_STATIC: fputs("static __thread", out); break;
}
}
void print_initializer(const initializer_t *initializer)
{
- if(initializer->type == INITIALIZER_VALUE) {
+ if(initializer->kind == INITIALIZER_VALUE) {
const initializer_value_t *value = &initializer->value;
print_expression(value->value);
return;
}
- assert(initializer->type == INITIALIZER_LIST);
+ assert(initializer->kind == INITIALIZER_LIST);
fputs("{ ", out);
const initializer_list_t *list = &initializer->list;
static void print_normal_declaration(const declaration_t *declaration)
{
- print_storage_class((storage_class_t)declaration->storage_class);
- print_type_ext(declaration->type, declaration->symbol,
- &declaration->context);
+ print_storage_class(declaration->storage_class);
if(declaration->is_inline) {
- fputs("inline ", out);
+ if (declaration->modifiers & DM_FORCEINLINE)
+ fputs("__forceinline ", out);
+ else
+ fputs("inline ", out);
}
+ print_type_ext(declaration->type, declaration->symbol,
+ &declaration->context);
- if(declaration->type->type == TYPE_FUNCTION) {
+ if(declaration->type->kind == TYPE_FUNCTION) {
if(declaration->init.statement != NULL) {
fputs("\n", out);
print_statement(declaration->init.statement);
void print_ast(const translation_unit_t *unit)
{
inc_type_visited();
- set_print_compound_entries(true);
declaration_t *declaration = unit->context.declarations;
for( ; declaration != NULL; declaration = declaration->next) {
}
}
+bool is_constant_expression(const expression_t *expression)
+{
+ switch(expression->kind) {
+
+ case EXPR_CONST:
+ case EXPR_STRING_LITERAL:
+ case EXPR_WIDE_STRING_LITERAL:
+ case EXPR_SIZEOF:
+ case EXPR_CLASSIFY_TYPE:
+ case EXPR_FUNCTION:
+ case EXPR_PRETTY_FUNCTION:
+ case EXPR_OFFSETOF:
+ case EXPR_ALIGNOF:
+ case EXPR_BUILTIN_CONSTANT_P:
+ return true;
+
+ case EXPR_BUILTIN_SYMBOL:
+ case EXPR_BUILTIN_PREFETCH:
+ case EXPR_CALL:
+ case EXPR_SELECT:
+ case EXPR_VA_START:
+ case EXPR_VA_ARG:
+ case EXPR_STATEMENT:
+ case EXPR_UNARY_POSTFIX_INCREMENT:
+ case EXPR_UNARY_POSTFIX_DECREMENT:
+ case EXPR_UNARY_PREFIX_INCREMENT:
+ case EXPR_UNARY_PREFIX_DECREMENT:
+ case EXPR_UNARY_BITFIELD_EXTRACT:
+ case EXPR_UNARY_ASSUME: /* has VOID type */
+ case EXPR_BINARY_ASSIGN:
+ case EXPR_BINARY_MUL_ASSIGN:
+ case EXPR_BINARY_DIV_ASSIGN:
+ case EXPR_BINARY_MOD_ASSIGN:
+ case EXPR_BINARY_ADD_ASSIGN:
+ case EXPR_BINARY_SUB_ASSIGN:
+ case EXPR_BINARY_SHIFTLEFT_ASSIGN:
+ case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
+ case EXPR_BINARY_BITWISE_AND_ASSIGN:
+ case EXPR_BINARY_BITWISE_XOR_ASSIGN:
+ case EXPR_BINARY_BITWISE_OR_ASSIGN:
+ case EXPR_BINARY_COMMA:
+ return false;
+
+ case EXPR_UNARY_NEGATE:
+ case EXPR_UNARY_PLUS:
+ case EXPR_UNARY_BITWISE_NEGATE:
+ case EXPR_UNARY_NOT:
+ case EXPR_UNARY_DEREFERENCE:
+ case EXPR_UNARY_TAKE_ADDRESS:
+ case EXPR_UNARY_CAST:
+ case EXPR_UNARY_CAST_IMPLICIT:
+ return is_constant_expression(expression->unary.value);
+
+ case EXPR_BINARY_ADD:
+ case EXPR_BINARY_SUB:
+ case EXPR_BINARY_MUL:
+ case EXPR_BINARY_DIV:
+ case EXPR_BINARY_MOD:
+ case EXPR_BINARY_EQUAL:
+ case EXPR_BINARY_NOTEQUAL:
+ case EXPR_BINARY_LESS:
+ case EXPR_BINARY_LESSEQUAL:
+ case EXPR_BINARY_GREATER:
+ case EXPR_BINARY_GREATEREQUAL:
+ case EXPR_BINARY_BITWISE_AND:
+ case EXPR_BINARY_BITWISE_OR:
+ case EXPR_BINARY_BITWISE_XOR:
+ case EXPR_BINARY_LOGICAL_AND:
+ case EXPR_BINARY_LOGICAL_OR:
+ case EXPR_BINARY_SHIFTLEFT:
+ case EXPR_BINARY_SHIFTRIGHT:
+ case EXPR_BINARY_BUILTIN_EXPECT:
+ case EXPR_BINARY_ISGREATER:
+ case EXPR_BINARY_ISGREATEREQUAL:
+ case EXPR_BINARY_ISLESS:
+ case EXPR_BINARY_ISLESSEQUAL:
+ case EXPR_BINARY_ISLESSGREATER:
+ case EXPR_BINARY_ISUNORDERED:
+ return is_constant_expression(expression->binary.left)
+ && is_constant_expression(expression->binary.right);
+
+ case EXPR_CONDITIONAL:
+ /* TODO: not correct, we only have to test expressions which are
+ * evaluated, which means either the true or false part might be not
+ * constant */
+ return is_constant_expression(expression->conditional.condition)
+ && is_constant_expression(expression->conditional.true_expression)
+ && is_constant_expression(expression->conditional.false_expression);
+
+ case EXPR_ARRAY_ACCESS:
+ return is_constant_expression(expression->array_access.array_ref)
+ && is_constant_expression(expression->array_access.index);
+
+ case EXPR_REFERENCE: {
+ declaration_t *declaration = expression->reference.declaration;
+ if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY)
+ return true;
+
+ return false;
+ }
+
+ case EXPR_UNKNOWN:
+ case EXPR_INVALID:
+ break;
+ }
+ panic("invalid expression found (is constant expression)");
+}
+
+
void init_ast(void)
{
obstack_init(&ast_obstack);
projects / cparser / blobdiff