X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ast.c;h=4d1b89c98a5cd272d606354fecff6dd8ba837095;hb=9fda39d0a68ce87734582057f3f31a5162e7a934;hp=d6999c62fb65fa6e25665aa1b39cff91c96e124d;hpb=56f78482884349f8af03357e2154528fb5d33145;p=cparser diff --git a/ast.c b/ast.c index d6999c6..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_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_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); @@ -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; @@ -259,11 +262,11 @@ static void print_quoted_string(const string_t *const string, char border, int s } /* 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; } } @@ -303,10 +306,10 @@ static void print_quoted_wide_string(const wide_string_t *const wstr, 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); @@ -383,6 +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. * @@ -390,8 +398,7 @@ 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; @@ -401,7 +408,7 @@ static void print_call_expression(const call_expression_t *call) } else { first = 0; } - print_expression_prec(argument->expression, PREC_ASSIGNMENT); + print_assignment_expression(argument->expression); argument = argument->next; } @@ -418,15 +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) { @@ -503,7 +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; @@ -548,14 +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); + 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); @@ -576,10 +573,8 @@ static void print_typeprop_expression(const typeprop_expression_t *expression) 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); + /* 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); @@ -587,16 +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. * @@ -605,27 +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); } @@ -637,12 +617,12 @@ 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); } precedence_t prec = c_mode & _CXX ? PREC_ASSIGNMENT : PREC_CONDITIONAL; print_expression_prec(expression->false_expression, prec); @@ -656,7 +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); @@ -670,12 +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 ->). * @@ -683,8 +677,7 @@ 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); + print_expression_prec(expression->compound, PREC_POSTFIX); if (is_type_pointer(skip_typeref(expression->compound->base.type))) { fputs("->", out); } else { @@ -702,7 +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); } @@ -732,8 +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); @@ -763,10 +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: @@ -817,14 +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); @@ -835,6 +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; @@ -853,7 +848,7 @@ static void print_expression_prec(const expression_t *expression, unsigned top_p fprintf(out, "some expression of type %d", (int)expression->kind); break; } - if (top_prec > prec) + if (parenthesized) fputc(')', out); } @@ -879,7 +874,7 @@ static void print_compound_statement(const compound_statement_t *block) } --indent; print_indent(); - fputs("}\n", out); + fputs(block->stmt_expr ? "}" : "}\n", out); } /** @@ -889,10 +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); + } } /** @@ -995,30 +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); } /** @@ -1046,10 +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; @@ -1060,13 +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); } } @@ -1107,29 +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) { + fputc(' ', out); print_expression(statement->condition); } - fputs("; ", out); + fputc(';', out); if (statement->step != NULL) { + fputc(' ', out); print_expression(statement->step); } fputs(") ", out); @@ -1263,9 +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; @@ -1318,16 +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"); } /** @@ -1345,7 +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: { @@ -1379,6 +1349,7 @@ void print_initializer(const initializer_t *initializer) panic("invalid initializer kind found"); } +#if 0 /** * Print microsoft extended declaration modifiers. */ @@ -1470,6 +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) { @@ -1520,7 +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, @@ -1573,9 +1545,8 @@ void print_entity(const entity_t *entity) 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; @@ -1610,9 +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; @@ -1715,6 +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); @@ -1786,27 +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) @@ -1860,14 +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; @@ -1882,11 +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: @@ -1944,11 +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: @@ -1958,6 +1939,24 @@ 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); @@ -1966,11 +1965,12 @@ bool is_constant_expression(const expression_t *expression) 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: