X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;ds=inline;f=ast.c;h=4d1b89c98a5cd272d606354fecff6dd8ba837095;hb=9fda39d0a68ce87734582057f3f31a5162e7a934;hp=7f7ed730f80153105ee7061e530190a40086b78a;hpb=e23f51196d447061b8411ba2b3fc231043f6d9c9;p=cparser diff --git a/ast.c b/ast.c index 7f7ed73..4d1b89c 100644 --- a/ast.c +++ b/ast.c @@ -31,13 +31,16 @@ #include #include -#ifdef __INTEL_COMPILER +#if defined(__INTEL_COMPILER) #include +#elif defined(__CYGWIN__) +#include "win32/cygwin_math_ext.h" #else #include #endif #include "adt/error.h" +#include "adt/util.h" struct obstack ast_obstack; @@ -92,91 +95,90 @@ static int right_to_left(unsigned precedence) static unsigned get_expression_precedence(expression_kind_t kind) { static const unsigned prec[] = { - [EXPR_UNKNOWN] = PREC_PRIMARY, - [EXPR_INVALID] = PREC_PRIMARY, - [EXPR_REFERENCE] = PREC_PRIMARY, - [EXPR_REFERENCE_ENUM_VALUE] = PREC_PRIMARY, - [EXPR_CHARACTER_CONSTANT] = PREC_PRIMARY, - [EXPR_WIDE_CHARACTER_CONSTANT] = PREC_PRIMARY, - [EXPR_CONST] = PREC_PRIMARY, - [EXPR_STRING_LITERAL] = PREC_PRIMARY, - [EXPR_WIDE_STRING_LITERAL] = PREC_PRIMARY, - [EXPR_COMPOUND_LITERAL] = PREC_UNARY, - [EXPR_CALL] = PREC_POSTFIX, - [EXPR_CONDITIONAL] = PREC_CONDITIONAL, - [EXPR_SELECT] = PREC_POSTFIX, - [EXPR_ARRAY_ACCESS] = PREC_POSTFIX, - [EXPR_SIZEOF] = PREC_UNARY, - [EXPR_CLASSIFY_TYPE] = PREC_UNARY, - [EXPR_ALIGNOF] = PREC_UNARY, - - [EXPR_FUNCNAME] = PREC_PRIMARY, - [EXPR_BUILTIN_SYMBOL] = PREC_PRIMARY, - [EXPR_BUILTIN_CONSTANT_P] = PREC_PRIMARY, - [EXPR_BUILTIN_PREFETCH] = PREC_PRIMARY, - [EXPR_OFFSETOF] = PREC_PRIMARY, - [EXPR_VA_START] = PREC_PRIMARY, - [EXPR_VA_ARG] = PREC_PRIMARY, - [EXPR_STATEMENT] = PREC_PRIMARY, - [EXPR_LABEL_ADDRESS] = PREC_PRIMARY, - - [EXPR_UNARY_NEGATE] = PREC_UNARY, - [EXPR_UNARY_PLUS] = PREC_UNARY, - [EXPR_UNARY_BITWISE_NEGATE] = PREC_UNARY, - [EXPR_UNARY_NOT] = PREC_UNARY, - [EXPR_UNARY_DEREFERENCE] = PREC_UNARY, - [EXPR_UNARY_TAKE_ADDRESS] = PREC_UNARY, - [EXPR_UNARY_POSTFIX_INCREMENT] = PREC_UNARY, - [EXPR_UNARY_POSTFIX_DECREMENT] = PREC_UNARY, - [EXPR_UNARY_PREFIX_INCREMENT] = PREC_UNARY, - [EXPR_UNARY_PREFIX_DECREMENT] = PREC_UNARY, - [EXPR_UNARY_CAST] = PREC_UNARY, - [EXPR_UNARY_CAST_IMPLICIT] = PREC_UNARY, - [EXPR_UNARY_ASSUME] = PREC_PRIMARY, - [EXPR_UNARY_DELETE] = PREC_UNARY, - [EXPR_UNARY_DELETE_ARRAY] = PREC_UNARY, - [EXPR_UNARY_THROW] = PREC_ASSIGNMENT, - - [EXPR_BINARY_ADD] = PREC_ADDITIVE, - [EXPR_BINARY_SUB] = PREC_ADDITIVE, - [EXPR_BINARY_MUL] = PREC_MULTIPLICATIVE, - [EXPR_BINARY_DIV] = PREC_MULTIPLICATIVE, - [EXPR_BINARY_MOD] = PREC_MULTIPLICATIVE, - [EXPR_BINARY_EQUAL] = PREC_EQUALITY, - [EXPR_BINARY_NOTEQUAL] = PREC_EQUALITY, - [EXPR_BINARY_LESS] = PREC_RELATIONAL, - [EXPR_BINARY_LESSEQUAL] = PREC_RELATIONAL, - [EXPR_BINARY_GREATER] = PREC_RELATIONAL, - [EXPR_BINARY_GREATEREQUAL] = PREC_RELATIONAL, - [EXPR_BINARY_BITWISE_AND] = PREC_AND, - [EXPR_BINARY_BITWISE_OR] = PREC_OR, - [EXPR_BINARY_BITWISE_XOR] = PREC_XOR, - [EXPR_BINARY_LOGICAL_AND] = PREC_LOGICAL_AND, - [EXPR_BINARY_LOGICAL_OR] = PREC_LOGICAL_OR, - [EXPR_BINARY_SHIFTLEFT] = PREC_SHIFT, - [EXPR_BINARY_SHIFTRIGHT] = PREC_SHIFT, - [EXPR_BINARY_ASSIGN] = PREC_ASSIGNMENT, - [EXPR_BINARY_MUL_ASSIGN] = PREC_ASSIGNMENT, - [EXPR_BINARY_DIV_ASSIGN] = PREC_ASSIGNMENT, - [EXPR_BINARY_MOD_ASSIGN] = PREC_ASSIGNMENT, - [EXPR_BINARY_ADD_ASSIGN] = PREC_ASSIGNMENT, - [EXPR_BINARY_SUB_ASSIGN] = PREC_ASSIGNMENT, - [EXPR_BINARY_SHIFTLEFT_ASSIGN] = PREC_ASSIGNMENT, - [EXPR_BINARY_SHIFTRIGHT_ASSIGN] = PREC_ASSIGNMENT, - [EXPR_BINARY_BITWISE_AND_ASSIGN] = PREC_ASSIGNMENT, - [EXPR_BINARY_BITWISE_XOR_ASSIGN] = PREC_ASSIGNMENT, - [EXPR_BINARY_BITWISE_OR_ASSIGN] = PREC_ASSIGNMENT, - [EXPR_BINARY_COMMA] = PREC_EXPRESSION, - - [EXPR_BINARY_BUILTIN_EXPECT] = PREC_PRIMARY, - [EXPR_BINARY_ISGREATER] = PREC_PRIMARY, - [EXPR_BINARY_ISGREATEREQUAL] = PREC_PRIMARY, - [EXPR_BINARY_ISLESS] = PREC_PRIMARY, - [EXPR_BINARY_ISLESSEQUAL] = PREC_PRIMARY, - [EXPR_BINARY_ISLESSGREATER] = PREC_PRIMARY, - [EXPR_BINARY_ISUNORDERED] = PREC_PRIMARY + [EXPR_UNKNOWN] = PREC_PRIMARY, + [EXPR_INVALID] = PREC_PRIMARY, + [EXPR_REFERENCE] = PREC_PRIMARY, + [EXPR_REFERENCE_ENUM_VALUE] = PREC_PRIMARY, + [EXPR_CHARACTER_CONSTANT] = PREC_PRIMARY, + [EXPR_WIDE_CHARACTER_CONSTANT] = PREC_PRIMARY, + [EXPR_CONST] = PREC_PRIMARY, + [EXPR_STRING_LITERAL] = PREC_PRIMARY, + [EXPR_WIDE_STRING_LITERAL] = PREC_PRIMARY, + [EXPR_COMPOUND_LITERAL] = PREC_UNARY, + [EXPR_CALL] = PREC_POSTFIX, + [EXPR_CONDITIONAL] = PREC_CONDITIONAL, + [EXPR_SELECT] = PREC_POSTFIX, + [EXPR_ARRAY_ACCESS] = PREC_POSTFIX, + [EXPR_SIZEOF] = PREC_UNARY, + [EXPR_CLASSIFY_TYPE] = PREC_UNARY, + [EXPR_ALIGNOF] = PREC_UNARY, + + [EXPR_FUNCNAME] = PREC_PRIMARY, + [EXPR_BUILTIN_CONSTANT_P] = PREC_PRIMARY, + [EXPR_BUILTIN_TYPES_COMPATIBLE_P] = PREC_PRIMARY, + [EXPR_OFFSETOF] = PREC_PRIMARY, + [EXPR_VA_START] = PREC_PRIMARY, + [EXPR_VA_ARG] = PREC_PRIMARY, + [EXPR_VA_COPY] = PREC_PRIMARY, + [EXPR_STATEMENT] = PREC_PRIMARY, + [EXPR_LABEL_ADDRESS] = PREC_PRIMARY, + + [EXPR_UNARY_NEGATE] = PREC_UNARY, + [EXPR_UNARY_PLUS] = PREC_UNARY, + [EXPR_UNARY_BITWISE_NEGATE] = PREC_UNARY, + [EXPR_UNARY_NOT] = PREC_UNARY, + [EXPR_UNARY_DEREFERENCE] = PREC_UNARY, + [EXPR_UNARY_TAKE_ADDRESS] = PREC_UNARY, + [EXPR_UNARY_POSTFIX_INCREMENT] = PREC_POSTFIX, + [EXPR_UNARY_POSTFIX_DECREMENT] = PREC_POSTFIX, + [EXPR_UNARY_PREFIX_INCREMENT] = PREC_UNARY, + [EXPR_UNARY_PREFIX_DECREMENT] = PREC_UNARY, + [EXPR_UNARY_CAST] = PREC_UNARY, + [EXPR_UNARY_CAST_IMPLICIT] = PREC_UNARY, + [EXPR_UNARY_ASSUME] = PREC_PRIMARY, + [EXPR_UNARY_DELETE] = PREC_UNARY, + [EXPR_UNARY_DELETE_ARRAY] = PREC_UNARY, + [EXPR_UNARY_THROW] = PREC_ASSIGNMENT, + + [EXPR_BINARY_ADD] = PREC_ADDITIVE, + [EXPR_BINARY_SUB] = PREC_ADDITIVE, + [EXPR_BINARY_MUL] = PREC_MULTIPLICATIVE, + [EXPR_BINARY_DIV] = PREC_MULTIPLICATIVE, + [EXPR_BINARY_MOD] = PREC_MULTIPLICATIVE, + [EXPR_BINARY_EQUAL] = PREC_EQUALITY, + [EXPR_BINARY_NOTEQUAL] = PREC_EQUALITY, + [EXPR_BINARY_LESS] = PREC_RELATIONAL, + [EXPR_BINARY_LESSEQUAL] = PREC_RELATIONAL, + [EXPR_BINARY_GREATER] = PREC_RELATIONAL, + [EXPR_BINARY_GREATEREQUAL] = PREC_RELATIONAL, + [EXPR_BINARY_BITWISE_AND] = PREC_AND, + [EXPR_BINARY_BITWISE_OR] = PREC_OR, + [EXPR_BINARY_BITWISE_XOR] = PREC_XOR, + [EXPR_BINARY_LOGICAL_AND] = PREC_LOGICAL_AND, + [EXPR_BINARY_LOGICAL_OR] = PREC_LOGICAL_OR, + [EXPR_BINARY_SHIFTLEFT] = PREC_SHIFT, + [EXPR_BINARY_SHIFTRIGHT] = PREC_SHIFT, + [EXPR_BINARY_ASSIGN] = PREC_ASSIGNMENT, + [EXPR_BINARY_MUL_ASSIGN] = PREC_ASSIGNMENT, + [EXPR_BINARY_DIV_ASSIGN] = PREC_ASSIGNMENT, + [EXPR_BINARY_MOD_ASSIGN] = PREC_ASSIGNMENT, + [EXPR_BINARY_ADD_ASSIGN] = PREC_ASSIGNMENT, + [EXPR_BINARY_SUB_ASSIGN] = PREC_ASSIGNMENT, + [EXPR_BINARY_SHIFTLEFT_ASSIGN] = PREC_ASSIGNMENT, + [EXPR_BINARY_SHIFTRIGHT_ASSIGN] = PREC_ASSIGNMENT, + [EXPR_BINARY_BITWISE_AND_ASSIGN] = PREC_ASSIGNMENT, + [EXPR_BINARY_BITWISE_XOR_ASSIGN] = PREC_ASSIGNMENT, + [EXPR_BINARY_BITWISE_OR_ASSIGN] = PREC_ASSIGNMENT, + [EXPR_BINARY_COMMA] = PREC_EXPRESSION, + + [EXPR_BINARY_ISGREATER] = PREC_PRIMARY, + [EXPR_BINARY_ISGREATEREQUAL] = PREC_PRIMARY, + [EXPR_BINARY_ISLESS] = PREC_PRIMARY, + [EXPR_BINARY_ISLESSEQUAL] = PREC_PRIMARY, + [EXPR_BINARY_ISLESSGREATER] = PREC_PRIMARY, + [EXPR_BINARY_ISUNORDERED] = PREC_PRIMARY }; - assert((unsigned)kind < (sizeof(prec)/sizeof(prec[0]))); + assert((size_t)kind < lengthof(prec)); unsigned res = prec[kind]; assert(res != PREC_BOTTOM); @@ -190,7 +192,7 @@ static unsigned get_expression_precedence(expression_kind_t kind) */ static void print_const(const const_expression_t *cnst) { - if(cnst->base.type == NULL) + if (cnst->base.type == NULL) return; const type_t *const type = skip_typeref(cnst->base.type); @@ -240,10 +242,11 @@ static void print_quoted_string(const string_t *const string, char border, int s fputc(border, out); const char *end = string->begin + string->size - skip; for (const char *c = string->begin; c != end; ++c) { - if (*c == border) { + unsigned char const tc = *c; + if (tc == border) { fputc('\\', out); } - switch (*c) { + switch (tc) { case '\\': fputs("\\\\", out); break; case '\a': fputs("\\a", out); break; case '\b': fputs("\\b", out); break; @@ -257,13 +260,13 @@ static void print_quoted_string(const string_t *const string, char border, int s if (c_mode & _GNUC) { fputs("\\e", out); break; } - /*fallthrough*/ + /* FALLTHROUGH */ default: - if(!isprint(*c)) { - fprintf(out, "\\%03o", (unsigned)*c); - break; + if (tc < 0x80 && !isprint(tc)) { + fprintf(out, "\\%03o", (unsigned)tc); + } else { + fputc(tc, out); } - fputc(*c, out); break; } } @@ -299,14 +302,14 @@ static void print_quoted_wide_string(const wide_string_t *const wstr, if (c_mode & _GNUC) { fputs("\\e", out); break; } - /*fallthrough*/ + /* FALLTHROUGH */ default: { const unsigned tc = *c; if (tc < 0x80U) { - if (!isprint(*c)) { - fprintf(out, "\\%03o", (char)*c); - } else { + if (isprint(*c)) { fputc(*c, out); + } else { + fprintf(out, "\\%03o", tc); } } else if (tc < 0x800) { fputc(0xC0 | (tc >> 6), out); @@ -356,8 +359,7 @@ static void print_string_literal( /** * Prints a predefined symbol. */ -static void print_funcname( - const funcname_expression_t *funcname) +static void print_funcname(const funcname_expression_t *funcname) { const char *s = ""; switch (funcname->kind) { @@ -366,9 +368,7 @@ static void print_funcname( case FUNCNAME_FUNCSIG: s = "__FUNCSIG__"; break; case FUNCNAME_FUNCDNAME: s = "__FUNCDNAME__"; break; } - fputc('"', out); fputs(s, out); - fputc('"', out); } static void print_wide_string_literal( @@ -386,6 +386,11 @@ static void print_compound_literal( print_initializer(expression->initializer); } +static void print_assignment_expression(const expression_t *const expr) +{ + print_expression_prec(expr, PREC_ASSIGNMENT); +} + /** * Prints a call expression. * @@ -393,18 +398,17 @@ static void print_compound_literal( */ static void print_call_expression(const call_expression_t *call) { - unsigned prec = get_expression_precedence(call->base.kind); - print_expression_prec(call->function, prec); + print_expression_prec(call->function, PREC_POSTFIX); fputc('(', out); call_argument_t *argument = call->arguments; int first = 1; - while(argument != NULL) { - if(!first) { + while (argument != NULL) { + if (!first) { fputs(", ", out); } else { first = 0; } - print_expression_prec(argument->expression, PREC_ASSIGNMENT); + print_assignment_expression(argument->expression); argument = argument->next; } @@ -421,15 +425,6 @@ static void print_binary_expression(const binary_expression_t *binexpr) unsigned prec = get_expression_precedence(binexpr->base.kind); int r2l = right_to_left(prec); - if(binexpr->base.kind == EXPR_BINARY_BUILTIN_EXPECT) { - fputs("__builtin_expect(", out); - print_expression_prec(binexpr->left, prec); - fputs(", ", out); - print_expression_prec(binexpr->right, prec); - fputc(')', out); - return; - } - print_expression_prec(binexpr->left, prec + r2l); char const* op; switch (binexpr->base.kind) { @@ -506,7 +501,7 @@ static void print_unary_expression(const unary_expression_t *unexpr) break; case EXPR_UNARY_ASSUME: fputs("__assume(", out); - print_expression_prec(unexpr->value, PREC_ASSIGNMENT); + print_assignment_expression(unexpr->value); fputc(')', out); return; @@ -551,14 +546,13 @@ static void print_label_address_expression(const label_address_expression_t *le) */ static void print_array_expression(const array_access_expression_t *expression) { - unsigned prec = get_expression_precedence(expression->base.kind); - if(!expression->flipped) { - print_expression_prec(expression->array_ref, prec); + if (!expression->flipped) { + print_expression_prec(expression->array_ref, PREC_POSTFIX); fputc('[', out); print_expression(expression->index); fputc(']', out); } else { - print_expression_prec(expression->index, prec); + print_expression_prec(expression->index, PREC_POSTFIX); fputc('[', out); print_expression(expression->array_ref); fputc(']', out); @@ -578,11 +572,9 @@ static void print_typeprop_expression(const typeprop_expression_t *expression) assert(expression->base.kind == EXPR_ALIGNOF); fputs("__alignof__", out); } - if(expression->tp_expression != NULL) { - /* always print the '()' here, sizeof x is right but unusual */ - fputc('(', out); - print_expression(expression->tp_expression); - fputc(')', out); + if (expression->tp_expression != NULL) { + /* PREC_TOP: always print the '()' here, sizeof x is right but unusual */ + print_expression_prec(expression->tp_expression, PREC_TOP); } else { fputc('(', out); print_type(expression->type); @@ -590,16 +582,6 @@ static void print_typeprop_expression(const typeprop_expression_t *expression) } } -/** - * Prints an builtin symbol. - * - * @param expression the builtin symbol expression - */ -static void print_builtin_symbol(const builtin_symbol_expression_t *expression) -{ - fputs(expression->symbol->string, out); -} - /** * Prints a builtin constant expression. * @@ -608,27 +590,22 @@ static void print_builtin_symbol(const builtin_symbol_expression_t *expression) static void print_builtin_constant(const builtin_constant_expression_t *expression) { fputs("__builtin_constant_p(", out); - print_expression_prec(expression->value, PREC_ASSIGNMENT); + print_assignment_expression(expression->value); fputc(')', out); } /** - * Prints a builtin prefetch expression. + * Prints a builtin types compatible expression. * - * @param expression the builtin prefetch expression + * @param expression the builtin types compatible expression */ -static void print_builtin_prefetch(const builtin_prefetch_expression_t *expression) +static void print_builtin_types_compatible( + const builtin_types_compatible_expression_t *expression) { - fputs("__builtin_prefetch(", out); - print_expression_prec(expression->adr, PREC_ASSIGNMENT); - if (expression->rw) { - fputc(',', out); - print_expression_prec(expression->rw, PREC_ASSIGNMENT); - } - if (expression->locality) { - fputc(',', out); - print_expression_prec(expression->locality, PREC_ASSIGNMENT); - } + fputs("__builtin_types_compatible_p(", out); + print_type(expression->left); + fputs(", ", out); + print_type(expression->right); fputc(')', out); } @@ -640,14 +617,15 @@ static void print_builtin_prefetch(const builtin_prefetch_expression_t *expressi static void print_conditional(const conditional_expression_t *expression) { print_expression_prec(expression->condition, PREC_LOGICAL_OR); - fputs(" ? ", out); if (expression->true_expression != NULL) { + fputs(" ? ", out); print_expression_prec(expression->true_expression, PREC_EXPRESSION); fputs(" : ", out); } else { - fputs(": ", out); + fputs(" ?: ", out); } - print_expression_prec(expression->false_expression, PREC_CONDITIONAL); + precedence_t prec = c_mode & _CXX ? PREC_ASSIGNMENT : PREC_CONDITIONAL; + print_expression_prec(expression->false_expression, prec); } /** @@ -658,7 +636,7 @@ static void print_conditional(const conditional_expression_t *expression) static void print_va_start(const va_start_expression_t *const expression) { fputs("__builtin_va_start(", out); - print_expression_prec(expression->ap, PREC_ASSIGNMENT); + print_assignment_expression(expression->ap); fputs(", ", out); fputs(expression->parameter->base.base.symbol->string, out); fputc(')', out); @@ -672,12 +650,26 @@ static void print_va_start(const va_start_expression_t *const expression) static void print_va_arg(const va_arg_expression_t *expression) { fputs("__builtin_va_arg(", out); - print_expression_prec(expression->ap, PREC_ASSIGNMENT); + print_assignment_expression(expression->ap); fputs(", ", out); print_type(expression->base.type); fputc(')', out); } +/** + * Prints a va_copy expression. + * + * @param expression the va_copy expression + */ +static void print_va_copy(const va_copy_expression_t *expression) +{ + fputs("__builtin_va_copy(", out); + print_assignment_expression(expression->dst); + fputs(", ", out); + print_assignment_expression(expression->src); + fputc(')', out); +} + /** * Prints a select expression (. or ->). * @@ -685,9 +677,8 @@ static void print_va_arg(const va_arg_expression_t *expression) */ static void print_select(const select_expression_t *expression) { - unsigned prec = get_expression_precedence(expression->base.kind); - print_expression_prec(expression->compound, prec); - if(is_type_pointer(skip_typeref(expression->compound->base.type))) { + print_expression_prec(expression->compound, PREC_POSTFIX); + if (is_type_pointer(skip_typeref(expression->compound->base.type))) { fputs("->", out); } else { fputc('.', out); @@ -704,7 +695,7 @@ static void print_classify_type_expression( const classify_type_expression_t *const expr) { fputs("__builtin_classify_type(", out); - print_expression_prec(expr->type_expression, PREC_ASSIGNMENT); + print_assignment_expression(expr->type_expression); fputc(')', out); } @@ -734,8 +725,7 @@ static void print_designator(const designator_t *designator) */ static void print_offsetof_expression(const offsetof_expression_t *expression) { - fputs("__builtin_offsetof", out); - fputc('(', out); + fputs("__builtin_offsetof(", out); print_type(expression->type); fputc(',', out); print_designator(expression->designator); @@ -765,10 +755,13 @@ static void print_expression_prec(const expression_t *expression, unsigned top_p if (expression->kind == EXPR_UNARY_CAST_IMPLICIT && !print_implicit_casts) { expression = expression->unary.value; } - unsigned prec = get_expression_precedence(expression->base.kind); - if (print_parenthesis && top_prec != PREC_BOTTOM) - top_prec = PREC_TOP; - if (top_prec > prec) + + bool parenthesized = + expression->base.parenthesized || + (print_parenthesis && top_prec != PREC_BOTTOM) || + top_prec > get_expression_precedence(expression->base.kind); + + if (parenthesized) fputc('(', out); switch (expression->kind) { case EXPR_UNKNOWN: @@ -819,14 +812,11 @@ static void print_expression_prec(const expression_t *expression, unsigned top_p case EXPR_ALIGNOF: print_typeprop_expression(&expression->typeprop); break; - case EXPR_BUILTIN_SYMBOL: - 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); + case EXPR_BUILTIN_TYPES_COMPATIBLE_P: + print_builtin_types_compatible(&expression->builtin_types_compatible); break; case EXPR_CONDITIONAL: print_conditional(&expression->conditional); @@ -837,6 +827,9 @@ static void print_expression_prec(const expression_t *expression, unsigned top_p case EXPR_VA_ARG: print_va_arg(&expression->va_arge); break; + case EXPR_VA_COPY: + print_va_copy(&expression->va_copye); + break; case EXPR_SELECT: print_select(&expression->select); break; @@ -852,10 +845,10 @@ static void print_expression_prec(const expression_t *expression, unsigned top_p default: /* TODO */ - fprintf(out, "some expression of type %d", (int) expression->kind); + fprintf(out, "some expression of type %d", (int)expression->kind); break; } - if (top_prec > prec) + if (parenthesized) fputc(')', out); } @@ -881,7 +874,7 @@ static void print_compound_statement(const compound_statement_t *block) } --indent; print_indent(); - fputs("}\n", out); + fputs(block->stmt_expr ? "}" : "}\n", out); } /** @@ -891,10 +884,14 @@ static void print_compound_statement(const compound_statement_t *block) */ static void print_return_statement(const return_statement_t *statement) { - fputs("return ", out); - if(statement->value != NULL) - print_expression(statement->value); - fputs(";\n", out); + expression_t const *const val = statement->value; + if (val != NULL) { + fputs("return ", out); + print_expression(val); + fputs(";\n", out); + } else { + fputs("return;\n", out); + } } /** @@ -949,7 +946,7 @@ static void print_if_statement(const if_statement_t *statement) fputs(") ", out); print_statement(statement->true_statement); - if(statement->false_statement != NULL) { + if (statement->false_statement != NULL) { print_indent(); fputs("else ", out); print_statement(statement->false_statement); @@ -976,7 +973,7 @@ static void print_switch_statement(const switch_statement_t *statement) */ static void print_case_label(const case_label_statement_t *statement) { - if(statement->expression == NULL) { + if (statement->expression == NULL) { fputs("default:\n", out); } else { fputs("case ", out); @@ -988,7 +985,7 @@ static void print_case_label(const case_label_statement_t *statement) fputs(":\n", out); } ++indent; - if(statement->statement != NULL) { + if (statement->statement != NULL) { if (statement->statement->base.kind == STATEMENT_CASE_LABEL) { --indent; } @@ -997,30 +994,11 @@ static void print_case_label(const case_label_statement_t *statement) } } -static void print_local_label(const local_label_statement_t *statement) -{ - fputs("__label__ ", out); - - bool first = true; - entity_t *entity = statement->labels_begin; - for (; - entity != statement->labels_end->base.next; - entity = entity->base.next) { - if (!first) { - fputs(", ", out); - } else { - first = false; - } - fputs(entity->base.symbol->string, out); - } - fputs(";\n", out); -} - static void print_typedef(const entity_t *entity) { fputs("typedef ", out); print_type_ext(entity->typedefe.type, entity->base.symbol, NULL); - fputs(";", out); + fputc(';', out); } /** @@ -1048,10 +1026,14 @@ static void print_declaration_statement( { bool first = true; entity_t *entity = statement->declarations_begin; - for (; - entity != statement->declarations_end->base.next; - entity = entity->base.next) { - if (!is_declaration(entity) && entity->kind != ENTITY_TYPEDEF) + if (entity == NULL) { + fputs("/* empty declaration statement */\n", out); + return; + } + + entity_t *const end = statement->declarations_end->base.next; + for (; entity != end; entity = entity->base.next) { + if (entity->kind == ENTITY_ENUM_VALUE) continue; if (is_generated_entity(entity)) continue; @@ -1062,13 +1044,7 @@ static void print_declaration_statement( first = false; } - if (entity->kind == ENTITY_TYPEDEF) { - print_typedef(entity); - } else { - assert(is_declaration(entity)); - print_declaration(entity); - } - + print_entity(entity); fputc('\n', out); } } @@ -1109,29 +1085,25 @@ static void print_do_while_statement(const do_while_statement_t *statement) static void print_for_statement(const for_statement_t *statement) { fputs("for (", out); - entity_t *entity = statement->scope.entities; - while (entity != NULL && is_generated_entity(entity)) - entity = entity->base.next; - - if (entity != NULL) { - assert(statement->initialisation == NULL); - assert(is_declaration(entity)); - print_declaration(entity); - if (entity->base.next != NULL) { - panic("multiple declarations in for statement not supported yet"); - } - fputc(' ', out); + if (statement->initialisation != NULL) { + print_expression(statement->initialisation); + fputc(';', out); } else { - if(statement->initialisation) { - print_expression(statement->initialisation); + entity_t const *entity = statement->scope.entities; + for (; entity != NULL; entity = entity->base.next) { + if (is_generated_entity(entity)) + continue; + /* FIXME display of multiple declarations is wrong */ + print_declaration(entity); } - fputs("; ", out); } - if(statement->condition != NULL) { + if (statement->condition != NULL) { + fputc(' ', out); print_expression(statement->condition); } - fputs("; ", out); - if(statement->step != NULL) { + fputc(';', out); + if (statement->step != NULL) { + fputc(' ', out); print_expression(statement->step); } fputs(") ", out); @@ -1146,11 +1118,11 @@ static void print_for_statement(const for_statement_t *statement) static void print_asm_arguments(asm_argument_t *arguments) { asm_argument_t *argument = arguments; - for( ; argument != NULL; argument = argument->next) { - if(argument != arguments) + for (; argument != NULL; argument = argument->next) { + if (argument != arguments) fputs(", ", out); - if(argument->symbol) { + if (argument->symbol) { fprintf(out, "[%s] ", argument->symbol->string); } print_quoted_string(&argument->constraints, '"', 1); @@ -1168,8 +1140,8 @@ static void print_asm_arguments(asm_argument_t *arguments) static void print_asm_clobbers(asm_clobber_t *clobbers) { asm_clobber_t *clobber = clobbers; - for( ; clobber != NULL; clobber = clobber->next) { - if(clobber != clobbers) + for (; clobber != NULL; clobber = clobber->next) { + if (clobber != clobbers) fputs(", ", out); print_quoted_string(&clobber->clobber, '"', 1); @@ -1184,7 +1156,7 @@ static void print_asm_clobbers(asm_clobber_t *clobbers) static void print_asm_statement(const asm_statement_t *statement) { fputs("asm ", out); - if(statement->is_volatile) { + if (statement->is_volatile) { fputs("volatile ", out); } fputc('(', out); @@ -1221,7 +1193,7 @@ static void print_ms_try_statement(const ms_try_statement_t *statement) fputs("__try ", out); print_statement(statement->try_statement); print_indent(); - if(statement->except_expression != NULL) { + if (statement->except_expression != NULL) { fputs("__except(", out); print_expression(statement->except_expression); fputs(") ", out); @@ -1238,7 +1210,7 @@ static void print_ms_try_statement(const ms_try_statement_t *statement) */ static void print_leave_statement(const leave_statement_t *statement) { - (void) statement; + (void)statement; fputs("__leave;\n", out); } @@ -1265,9 +1237,6 @@ void print_statement(const statement_t *statement) case STATEMENT_LABEL: print_label_statement(&statement->label); break; - case STATEMENT_LOCAL_LABEL: - print_local_label(&statement->local_label); - break; case STATEMENT_GOTO: print_goto_statement(&statement->gotos); break; @@ -1320,16 +1289,15 @@ void print_statement(const statement_t *statement) */ static void print_storage_class(storage_class_tag_t storage_class) { - const char *text; switch (storage_class) { case STORAGE_CLASS_NONE: return; - case STORAGE_CLASS_TYPEDEF: text = "typedef "; break; - case STORAGE_CLASS_EXTERN: text = "extern "; break; - case STORAGE_CLASS_STATIC: text = "static "; break; - case STORAGE_CLASS_AUTO: text = "auto "; break; - case STORAGE_CLASS_REGISTER: text = "register "; break; + case STORAGE_CLASS_TYPEDEF: fputs("typedef ", out); return; + case STORAGE_CLASS_EXTERN: fputs("extern ", out); return; + case STORAGE_CLASS_STATIC: fputs("static ", out); return; + case STORAGE_CLASS_AUTO: fputs("auto ", out); return; + case STORAGE_CLASS_REGISTER: fputs("register ", out); return; } - fputs(text, out); + panic("invalid storage class"); } /** @@ -1339,7 +1307,7 @@ static void print_storage_class(storage_class_tag_t storage_class) */ void print_initializer(const initializer_t *initializer) { - if(initializer == NULL) { + if (initializer == NULL) { fputs("{}", out); return; } @@ -1347,7 +1315,7 @@ void print_initializer(const initializer_t *initializer) switch (initializer->kind) { case INITIALIZER_VALUE: { const initializer_value_t *value = &initializer->value; - print_expression(value->value); + print_assignment_expression(value->value); return; } case INITIALIZER_LIST: { @@ -1355,11 +1323,11 @@ void print_initializer(const initializer_t *initializer) fputs("{ ", out); const initializer_list_t *list = &initializer->list; - for(size_t i = 0 ; i < list->len; ++i) { + for (size_t i = 0 ; i < list->len; ++i) { const initializer_t *sub_init = list->initializers[i]; print_initializer(list->initializers[i]); - if(i < list->len-1) { - if(sub_init == NULL || sub_init->kind != INITIALIZER_DESIGNATOR) + if (i < list->len-1) { + if (sub_init == NULL || sub_init->kind != INITIALIZER_DESIGNATOR) fputs(", ", out); } } @@ -1381,12 +1349,13 @@ void print_initializer(const initializer_t *initializer) panic("invalid initializer kind found"); } +#if 0 /** * Print microsoft extended declaration modifiers. */ static void print_ms_modifiers(const declaration_t *declaration) { - if((c_mode & _MS) == 0) + if ((c_mode & _MS) == 0) return; decl_modifiers_t modifiers = declaration->modifiers; @@ -1395,7 +1364,7 @@ static void print_ms_modifiers(const declaration_t *declaration) const char *next = "("; if (declaration->base.kind == ENTITY_VARIABLE) { - variable_t *variable = (variable_t*) declaration; + variable_t *variable = (variable_t*)declaration; if (variable->alignment != 0 || variable->get_property_sym != NULL || variable->put_property_sym != NULL) { @@ -1404,18 +1373,18 @@ static void print_ms_modifiers(const declaration_t *declaration) ds_shown = true; } - if(variable->alignment != 0) { + if (variable->alignment != 0) { fputs(next, out); next = ", "; fprintf(out, "align(%u)", variable->alignment); } - if(variable->get_property_sym != NULL + if (variable->get_property_sym != NULL || variable->put_property_sym != NULL) { char *comma = ""; fputs(next, out); next = ", "; fputs("property(", out); - if(variable->get_property_sym != NULL) { + if (variable->get_property_sym != NULL) { fprintf(out, "get=%s", variable->get_property_sym->string); comma = ", "; } - if(variable->put_property_sym != NULL) + if (variable->put_property_sym != NULL) fprintf(out, "%sput=%s", comma, variable->put_property_sym->string); fputc(')', out); } @@ -1428,43 +1397,43 @@ static void print_ms_modifiers(const declaration_t *declaration) fputs("__declspec", out); ds_shown = true; } - if(modifiers & DM_DLLIMPORT) { + if (modifiers & DM_DLLIMPORT) { fputs(next, out); next = ", "; fputs("dllimport", out); } - if(modifiers & DM_DLLEXPORT) { + if (modifiers & DM_DLLEXPORT) { fputs(next, out); next = ", "; fputs("dllexport", out); } - if(modifiers & DM_THREAD) { + if (modifiers & DM_THREAD) { fputs(next, out); next = ", "; fputs("thread", out); } - if(modifiers & DM_NAKED) { + if (modifiers & DM_NAKED) { fputs(next, out); next = ", "; fputs("naked", out); } - if(modifiers & DM_THREAD) { + if (modifiers & DM_THREAD) { fputs(next, out); next = ", "; fputs("thread", out); } - if(modifiers & DM_SELECTANY) { + if (modifiers & DM_SELECTANY) { fputs(next, out); next = ", "; fputs("selectany", out); } - if(modifiers & DM_NOTHROW) { + if (modifiers & DM_NOTHROW) { fputs(next, out); next = ", "; fputs("nothrow", out); } - if(modifiers & DM_NORETURN) { + if (modifiers & DM_NORETURN) { fputs(next, out); next = ", "; fputs("noreturn", out); } - if(modifiers & DM_NOINLINE) { + if (modifiers & DM_NOINLINE) { fputs(next, out); next = ", "; fputs("noinline", out); } if (modifiers & DM_DEPRECATED) { fputs(next, out); next = ", "; fputs("deprecated", out); - if(declaration->deprecated_string != NULL) + if (declaration->deprecated_string != NULL) fprintf(out, "(\"%s\")", declaration->deprecated_string); } - if(modifiers & DM_RESTRICT) { + if (modifiers & DM_RESTRICT) { fputs(next, out); next = ", "; fputs("restrict", out); } - if(modifiers & DM_NOALIAS) { + if (modifiers & DM_NOALIAS) { fputs(next, out); next = ", "; fputs("noalias", out); } } @@ -1472,6 +1441,7 @@ static void print_ms_modifiers(const declaration_t *declaration) if (ds_shown) fputs(") ", out); } +#endif static void print_scope(const scope_t *scope) { @@ -1509,9 +1479,9 @@ void print_declaration(const entity_t *entity) assert(is_declaration(entity)); const declaration_t *declaration = &entity->declaration; - print_storage_class((storage_class_tag_t) declaration->declared_storage_class); + print_storage_class((storage_class_tag_t)declaration->declared_storage_class); if (entity->kind == ENTITY_FUNCTION) { - function_t *function = (function_t*) declaration; + function_t *function = (function_t*)declaration; if (function->is_inline) { if (declaration->modifiers & DM_FORCEINLINE) { fputs("__forceinline ", out); @@ -1522,7 +1492,7 @@ void print_declaration(const entity_t *entity) } } } - print_ms_modifiers(declaration); + //print_ms_modifiers(declaration); switch (entity->kind) { case ENTITY_FUNCTION: print_type_ext(entity->declaration.type, entity->base.symbol, @@ -1573,11 +1543,10 @@ void print_entity(const entity_t *entity) if (entity->base.namespc != NAMESPACE_NORMAL && entity->base.symbol == NULL) return; - switch ((entity_kind_tag_t) entity->kind) { + switch ((entity_kind_tag_t)entity->kind) { case ENTITY_VARIABLE: + case ENTITY_PARAMETER: case ENTITY_COMPOUND_MEMBER: - print_declaration(entity); - return; case ENTITY_FUNCTION: print_declaration(entity); return; @@ -1612,9 +1581,11 @@ void print_entity(const entity_t *entity) case ENTITY_NAMESPACE: print_namespace(&entity->namespacee); return; + case ENTITY_LOCAL_LABEL: + fprintf(out, "__label__ %s;", entity->base.symbol->string); + return; case ENTITY_LABEL: case ENTITY_ENUM_VALUE: - case ENTITY_LOCAL_LABEL: panic("print_entity used on unexpected entity type"); case ENTITY_INVALID: break; @@ -1659,9 +1630,9 @@ bool is_constant_initializer(const initializer_t *initializer) return is_constant_expression(initializer->value.value); case INITIALIZER_LIST: - for(size_t i = 0; i < initializer->list.len; ++i) { + for (size_t i = 0; i < initializer->list.len; ++i) { initializer_t *sub_initializer = initializer->list.initializers[i]; - if(!is_constant_initializer(sub_initializer)) + if (!is_constant_initializer(sub_initializer)) return false; } return true; @@ -1677,7 +1648,7 @@ static bool is_object_with_linker_constant_address(const expression_t *expressio case EXPR_SELECT: { type_t *base_type = skip_typeref(expression->select.compound->base.type); - if(is_type_pointer(base_type)) { + if (is_type_pointer(base_type)) { /* it's a -> */ return is_address_constant(expression->select.compound); } else { @@ -1692,7 +1663,7 @@ static bool is_object_with_linker_constant_address(const expression_t *expressio case EXPR_REFERENCE: { entity_t *entity = expression->reference.entity; if (is_declaration(entity)) { - switch ((storage_class_tag_t) entity->declaration.storage_class) { + switch ((storage_class_tag_t)entity->declaration.storage_class) { case STORAGE_CLASS_NONE: case STORAGE_CLASS_EXTERN: case STORAGE_CLASS_STATIC: @@ -1717,6 +1688,12 @@ static bool is_object_with_linker_constant_address(const expression_t *expressio bool is_address_constant(const expression_t *expression) { switch (expression->kind) { + case EXPR_STRING_LITERAL: + case EXPR_WIDE_STRING_LITERAL: + case EXPR_FUNCNAME: + case EXPR_LABEL_ADDRESS: + return true; + case EXPR_UNARY_TAKE_ADDRESS: return is_object_with_linker_constant_address(expression->unary.value); @@ -1724,11 +1701,10 @@ bool is_address_constant(const expression_t *expression) type_t *real_type = revert_automatic_type_conversion(expression->unary.value); /* dereferencing a function is a NOP */ - if(is_type_function(real_type)) { + if (is_type_function(real_type)) { return is_address_constant(expression->unary.value); } - - /* fallthrough */ + /* FALLTHROUGH */ } case EXPR_UNARY_CAST: { @@ -1736,8 +1712,8 @@ bool is_address_constant(const expression_t *expression) if (!is_type_pointer(dest) && ( dest->kind != TYPE_ATOMIC || !(get_atomic_type_flags(dest->atomic.akind) & ATOMIC_TYPE_FLAG_INTEGER) || - (get_atomic_type_size(dest->atomic.akind) < get_atomic_type_size(get_intptr_kind()) - ))) + get_atomic_type_size(dest->atomic.akind) < get_atomic_type_size(get_intptr_kind()) + )) return false; return (is_constant_expression(expression->unary.value) @@ -1749,9 +1725,9 @@ bool is_address_constant(const expression_t *expression) expression_t *left = expression->binary.left; expression_t *right = expression->binary.right; - if(is_type_pointer(skip_typeref(left->base.type))) { + if (is_type_pointer(skip_typeref(left->base.type))) { return is_address_constant(left) && is_constant_expression(right); - } else if(is_type_pointer(skip_typeref(right->base.type))) { + } else if (is_type_pointer(skip_typeref(right->base.type))) { return is_constant_expression(left) && is_address_constant(right); } @@ -1764,9 +1740,9 @@ bool is_address_constant(const expression_t *expression) return false; type_t *type = skip_typeref(entity->declaration.type); - if(is_type_function(type)) + if (is_type_function(type)) return true; - if(is_type_array(type)) { + if (is_type_array(type)) { return is_object_with_linker_constant_address(expression); } /* Prevent stray errors */ @@ -1789,27 +1765,32 @@ bool is_address_constant(const expression_t *expression) } } +/** + * Check if the given expression is a call to a builtin function + * returning a constant result. + */ static bool is_builtin_const_call(const expression_t *expression) { expression_t *function = expression->call.function; - if (function->kind != EXPR_BUILTIN_SYMBOL) { + if (function->kind != EXPR_REFERENCE) + return false; + reference_expression_t *ref = &function->reference; + if (ref->entity->kind != ENTITY_FUNCTION) return false; - } - - symbol_t *symbol = function->builtin_symbol.symbol; - switch (symbol->ID) { - case T___builtin_huge_val: - case T___builtin_inf: - case T___builtin_inff: - case T___builtin_infl: - case T___builtin_nan: - case T___builtin_nanf: - case T___builtin_nanl: + switch (ref->entity->function.btk) { + case bk_gnu_builtin_huge_val: + case bk_gnu_builtin_inf: + case bk_gnu_builtin_inff: + case bk_gnu_builtin_infl: + case bk_gnu_builtin_nan: + case bk_gnu_builtin_nanf: + case bk_gnu_builtin_nanl: return true; + default: + return false; } - return false; } static bool is_constant_pointer(const expression_t *expression) @@ -1832,7 +1813,7 @@ static bool is_object_with_constant_address(const expression_t *expression) expression_t *compound = expression->select.compound; type_t *compound_type = compound->base.type; compound_type = skip_typeref(compound_type); - if(is_type_pointer(compound_type)) { + if (is_type_pointer(compound_type)) { return is_constant_pointer(compound); } else { return is_object_with_constant_address(compound); @@ -1863,14 +1844,11 @@ bool is_constant_expression(const expression_t *expression) case EXPR_CONST: case EXPR_CHARACTER_CONSTANT: case EXPR_WIDE_CHARACTER_CONSTANT: - case EXPR_STRING_LITERAL: - case EXPR_WIDE_STRING_LITERAL: case EXPR_CLASSIFY_TYPE: - case EXPR_FUNCNAME: case EXPR_OFFSETOF: case EXPR_ALIGNOF: case EXPR_BUILTIN_CONSTANT_P: - case EXPR_LABEL_ADDRESS: + case EXPR_BUILTIN_TYPES_COMPATIBLE_P: case EXPR_REFERENCE_ENUM_VALUE: return true; @@ -1885,11 +1863,14 @@ bool is_constant_expression(const expression_t *expression) return true; } - case EXPR_BUILTIN_SYMBOL: - case EXPR_BUILTIN_PREFETCH: + case EXPR_STRING_LITERAL: + case EXPR_WIDE_STRING_LITERAL: + case EXPR_FUNCNAME: + case EXPR_LABEL_ADDRESS: case EXPR_SELECT: case EXPR_VA_START: case EXPR_VA_ARG: + case EXPR_VA_COPY: case EXPR_STATEMENT: case EXPR_REFERENCE: case EXPR_UNARY_POSTFIX_INCREMENT: @@ -1947,11 +1928,8 @@ bool is_constant_expression(const expression_t *expression) 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: @@ -1961,19 +1939,38 @@ bool is_constant_expression(const expression_t *expression) return is_constant_expression(expression->binary.left) && is_constant_expression(expression->binary.right); + case EXPR_BINARY_LOGICAL_AND: { + expression_t const *const left = expression->binary.left; + if (!is_constant_expression(left)) + return false; + if (fold_constant_to_bool(left) == false) + return true; + return is_constant_expression(expression->binary.right); + } + + case EXPR_BINARY_LOGICAL_OR: { + expression_t const *const left = expression->binary.left; + if (!is_constant_expression(left)) + return false; + if (fold_constant_to_bool(left) == true) + return true; + return is_constant_expression(expression->binary.right); + } + case EXPR_COMPOUND_LITERAL: return is_constant_initializer(expression->compound_literal.initializer); case EXPR_CONDITIONAL: { expression_t *condition = expression->conditional.condition; - if(!is_constant_expression(condition)) + if (!is_constant_expression(condition)) return false; - long val = fold_constant(condition); - if(val != 0) - return is_constant_expression(expression->conditional.true_expression); - else + if (fold_constant_to_bool(condition) == true) { + expression_t const *const t = expression->conditional.true_expression; + return t == NULL || is_constant_expression(t); + } else { return is_constant_expression(expression->conditional.false_expression); + } } case EXPR_INVALID: