X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ast.c;h=cb40c3f7cee32901a5cf82dd14595241f9a74dbd;hb=093d261f7daac072333ae1f2227a73aa6dc53efd;hp=d421dcfa9500fa68204cbadda5ed6789ead751a4;hpb=f0585f5cabb882bac14e4253c465f7d105c33fd2;p=cparser diff --git a/ast.c b/ast.c index d421dcf..cb40c3f 100644 --- a/ast.c +++ b/ast.c @@ -47,6 +47,7 @@ struct obstack ast_obstack; static int indent; +static int case_indent; bool print_implicit_casts = false; bool print_parenthesis = false; @@ -63,14 +64,7 @@ void change_indent(int delta) void print_indent(void) { for (int i = 0; i < indent; ++i) - print_string("\t"); -} - -static void print_stringrep(const string_t *string) -{ - for (size_t i = 0; i < string->size; ++i) { - print_char(string->begin[i]); - } + print_char('\t'); } /** @@ -100,90 +94,86 @@ static int right_to_left(unsigned precedence) static unsigned get_expression_precedence(expression_kind_t kind) { static const unsigned prec[] = { - [EXPR_REFERENCE] = PREC_PRIMARY, - [EXPR_REFERENCE_ENUM_VALUE] = PREC_PRIMARY, - [EXPR_LITERAL_INTEGER] = PREC_PRIMARY, - [EXPR_LITERAL_INTEGER_OCTAL] = PREC_PRIMARY, - [EXPR_LITERAL_INTEGER_HEXADECIMAL] = PREC_PRIMARY, - [EXPR_LITERAL_FLOATINGPOINT] = PREC_PRIMARY, - [EXPR_LITERAL_FLOATINGPOINT_HEXADECIMAL] = PREC_PRIMARY, - [EXPR_LITERAL_CHARACTER] = PREC_PRIMARY, - [EXPR_LITERAL_WIDE_CHARACTER] = PREC_PRIMARY, - [EXPR_LITERAL_MS_NOOP] = 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_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 + [EXPR_ERROR] = PREC_PRIMARY, + [EXPR_REFERENCE] = PREC_PRIMARY, + [EXPR_ENUM_CONSTANT] = PREC_PRIMARY, + [EXPR_LITERAL_INTEGER] = PREC_PRIMARY, + [EXPR_LITERAL_FLOATINGPOINT] = PREC_PRIMARY, + [EXPR_LITERAL_CHARACTER] = PREC_PRIMARY, + [EXPR_LITERAL_MS_NOOP] = PREC_PRIMARY, + [EXPR_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_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((size_t)kind < lengthof(prec)); unsigned res = prec[kind]; @@ -197,17 +187,17 @@ static unsigned get_expression_precedence(expression_kind_t kind) * * @param string the string constant * @param border the border char - * @param skip number of chars to skip at the end */ -static void print_quoted_string(const string_t *const string, char border, - int skip) +static void print_quoted_string(const string_t *const string, char border) { + print_string(get_string_encoding_prefix(string->encoding)); + print_char(border); - const char *end = string->begin + string->size - skip; + const char *end = string->begin + string->size; for (const char *c = string->begin; c != end; ++c) { const char tc = *c; if (tc == border) { - print_string("\\"); + print_char('\\'); } switch (tc) { case '\\': print_string("\\\\"); break; @@ -236,12 +226,9 @@ static void print_quoted_string(const string_t *const string, char border, print_char(border); } -static void print_string_literal(const string_literal_expression_t *literal) +static void print_string_literal(string_literal_expression_t const *const literal, char const delimiter) { - if (literal->base.kind == EXPR_WIDE_STRING_LITERAL) { - print_char('L'); - } - print_quoted_string(&literal->value, '"', 1); + print_quoted_string(&literal->value, delimiter); } static void print_literal(const literal_expression_t *literal) @@ -250,24 +237,13 @@ static void print_literal(const literal_expression_t *literal) case EXPR_LITERAL_MS_NOOP: print_string("__noop"); return; - case EXPR_LITERAL_INTEGER_HEXADECIMAL: - case EXPR_LITERAL_FLOATINGPOINT_HEXADECIMAL: - print_string("0x"); - /* FALLTHROUGH */ + case EXPR_LITERAL_BOOLEAN: - case EXPR_LITERAL_INTEGER: - case EXPR_LITERAL_INTEGER_OCTAL: case EXPR_LITERAL_FLOATINGPOINT: - print_stringrep(&literal->value); - if (literal->suffix.size > 0) - print_stringrep(&literal->suffix); - return; - case EXPR_LITERAL_WIDE_CHARACTER: - print_char('L'); - /* FALLTHROUGH */ - case EXPR_LITERAL_CHARACTER: - print_quoted_string(&literal->value, '\'', 0); + case EXPR_LITERAL_INTEGER: + print_string(literal->value.begin); return; + default: break; } @@ -292,9 +268,9 @@ static void print_funcname(const funcname_expression_t *funcname) static void print_compound_literal( const compound_literal_expression_t *expression) { - print_string("("); + print_char('('); print_type(expression->type); - print_string(")"); + print_char(')'); print_initializer(expression->initializer); } @@ -311,20 +287,14 @@ static void print_assignment_expression(const expression_t *const expr) static void print_call_expression(const call_expression_t *call) { print_expression_prec(call->function, PREC_POSTFIX); - print_string("("); - call_argument_t *argument = call->arguments; - int first = 1; - while (argument != NULL) { - if (!first) { - print_string(", "); - } else { - first = 0; - } - print_assignment_expression(argument->expression); - - argument = argument->next; + print_char('('); + char const *sep = ""; + for (call_argument_t const *arg = call->arguments; arg; arg = arg->next) { + print_string(sep); + sep = ", "; + print_assignment_expression(arg->expression); } - print_string(")"); + print_char(')'); } /** @@ -386,14 +356,14 @@ static void print_unary_expression(const unary_expression_t *unexpr) { unsigned prec = get_expression_precedence(unexpr->base.kind); switch (unexpr->base.kind) { - case EXPR_UNARY_NEGATE: print_string("-"); break; - case EXPR_UNARY_PLUS: print_string("+"); break; - case EXPR_UNARY_NOT: print_string("!"); break; - case EXPR_UNARY_BITWISE_NEGATE: print_string("~"); break; + case EXPR_UNARY_NEGATE: print_char ('-' ); break; + case EXPR_UNARY_PLUS: print_char ('+' ); break; + case EXPR_UNARY_NOT: print_char ('!' ); break; + case EXPR_UNARY_BITWISE_NEGATE: print_char ('~' ); break; case EXPR_UNARY_PREFIX_INCREMENT: print_string("++"); break; case EXPR_UNARY_PREFIX_DECREMENT: print_string("--"); break; - case EXPR_UNARY_DEREFERENCE: print_string("*"); break; - case EXPR_UNARY_TAKE_ADDRESS: print_string("&"); break; + case EXPR_UNARY_DEREFERENCE: print_char ('*' ); break; + case EXPR_UNARY_TAKE_ADDRESS: print_char ('&' ); break; case EXPR_UNARY_DELETE: print_string("delete "); break; case EXPR_UNARY_DELETE_ARRAY: print_string("delete [] "); break; @@ -406,14 +376,14 @@ static void print_unary_expression(const unary_expression_t *unexpr) print_string("--"); return; case EXPR_UNARY_CAST: - print_string("("); + print_char('('); print_type(unexpr->base.type); - print_string(")"); + print_char(')'); break; case EXPR_UNARY_ASSUME: print_string("__assume("); print_assignment_expression(unexpr->value); - print_string(")"); + print_char(')'); return; case EXPR_UNARY_THROW: @@ -459,14 +429,14 @@ static void print_array_expression(const array_access_expression_t *expression) { if (!expression->flipped) { print_expression_prec(expression->array_ref, PREC_POSTFIX); - print_string("["); + print_char('['); print_expression(expression->index); - print_string("]"); + print_char(']'); } else { print_expression_prec(expression->index, PREC_POSTFIX); - print_string("["); + print_char('['); print_expression(expression->array_ref); - print_string("]"); + print_char(']'); } } @@ -477,19 +447,18 @@ static void print_array_expression(const array_access_expression_t *expression) */ static void print_typeprop_expression(const typeprop_expression_t *expression) { - if (expression->base.kind == EXPR_SIZEOF) { - print_string("sizeof"); - } else { - assert(expression->base.kind == EXPR_ALIGNOF); - print_string("__alignof__"); + switch (expression->base.kind) { + case EXPR_SIZEOF: print_string("sizeof"); break; + case EXPR_ALIGNOF: print_string("__alignof__"); break; + default: panic("invalid typeprop kind"); } 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 { - print_string("("); + print_char('('); print_type(expression->type); - print_string(")"); + print_char(')'); } } @@ -502,7 +471,7 @@ static void print_builtin_constant(const builtin_constant_expression_t *expressi { print_string("__builtin_constant_p("); print_assignment_expression(expression->value); - print_string(")"); + print_char(')'); } /** @@ -517,7 +486,7 @@ static void print_builtin_types_compatible( print_type(expression->left); print_string(", "); print_type(expression->right); - print_string(")"); + print_char(')'); } /** @@ -549,8 +518,8 @@ static void print_va_start(const va_start_expression_t *const expression) print_string("__builtin_va_start("); print_assignment_expression(expression->ap); print_string(", "); - print_string(expression->parameter->base.base.symbol->string); - print_string(")"); + print_assignment_expression(expression->parameter); + print_char(')'); } /** @@ -564,7 +533,7 @@ static void print_va_arg(const va_arg_expression_t *expression) print_assignment_expression(expression->ap); print_string(", "); print_type(expression->base.type); - print_string(")"); + print_char(')'); } /** @@ -578,7 +547,7 @@ static void print_va_copy(const va_copy_expression_t *expression) print_assignment_expression(expression->dst); print_string(", "); print_assignment_expression(expression->src); - print_string(")"); + print_char(')'); } /** @@ -598,7 +567,7 @@ static void print_select(const select_expression_t *expression) if (is_type_pointer(skip_typeref(expression->compound->base.type))) { print_string("->"); } else { - print_string("."); + print_char('.'); } print_string(expression->compound_entry->base.symbol->string); } @@ -613,7 +582,7 @@ static void print_classify_type_expression( { print_string("__builtin_classify_type("); print_assignment_expression(expr->type_expression); - print_string(")"); + print_char(')'); } /** @@ -625,11 +594,11 @@ static void print_designator(const designator_t *designator) { for ( ; designator != NULL; designator = designator->next) { if (designator->symbol == NULL) { - print_string("["); + print_char('['); print_expression(designator->array_index); - print_string("]"); + print_char(']'); } else { - print_string("."); + print_char('.'); print_string(designator->symbol->string); } } @@ -644,9 +613,9 @@ static void print_offsetof_expression(const offsetof_expression_t *expression) { print_string("__builtin_offsetof("); print_type(expression->type); - print_string(","); + print_char(','); print_designator(expression->designator); - print_string(")"); + print_char(')'); } /** @@ -656,9 +625,36 @@ static void print_offsetof_expression(const offsetof_expression_t *expression) */ static void print_statement_expression(const statement_expression_t *expression) { - print_string("("); + print_char('('); print_statement(expression->statement); - print_string(")"); + print_char(')'); +} + +static bool needs_parentheses(expression_t const *const expr, unsigned const top_prec) +{ + if (expr->base.parenthesized) + return true; + + if (top_prec > get_expression_precedence(expr->base.kind)) + return true; + + if (print_parenthesis && top_prec != PREC_BOTTOM) { + switch (expr->kind) { + case EXPR_ENUM_CONSTANT: + case EXPR_FUNCNAME: + case EXPR_LITERAL_CASES: + case EXPR_LITERAL_CHARACTER: + case EXPR_REFERENCE: + case EXPR_STRING_LITERAL: + /* Do not print () around subexpressions consisting of a single token. */ + return false; + + default: + return true; + } + } + + return false; } /** @@ -667,93 +663,63 @@ static void print_statement_expression(const statement_expression_t *expression) * @param expression the expression to print * @param top_prec the precedence of the user of this expression. */ -static void print_expression_prec(const expression_t *expression, unsigned top_prec) +static void print_expression_prec(expression_t const *expr, unsigned const top_prec) { - if (expression->kind == EXPR_UNARY_CAST - && expression->base.implicit && !print_implicit_casts) { - expression = expression->unary.value; + if (expr->kind == EXPR_UNARY_CAST && expr->base.implicit && !print_implicit_casts) { + expr = expr->unary.value; } - bool parenthesized = - expression->base.parenthesized || - (print_parenthesis && top_prec != PREC_BOTTOM) || - top_prec > get_expression_precedence(expression->base.kind); + bool const parenthesized = needs_parentheses(expr, top_prec); if (parenthesized) - print_string("("); - switch (expression->kind) { - case EXPR_ERROR: - print_string("$error$"); - break; - case EXPR_WIDE_STRING_LITERAL: - case EXPR_STRING_LITERAL: - print_string_literal(&expression->string_literal); - break; - EXPR_LITERAL_CASES - print_literal(&expression->literal); - break; - case EXPR_FUNCNAME: - print_funcname(&expression->funcname); - break; - case EXPR_COMPOUND_LITERAL: - print_compound_literal(&expression->compound_literal); - break; - case EXPR_CALL: - print_call_expression(&expression->call); - break; - EXPR_BINARY_CASES - print_binary_expression(&expression->binary); - break; - case EXPR_REFERENCE: - case EXPR_REFERENCE_ENUM_VALUE: - print_reference_expression(&expression->reference); - break; - case EXPR_ARRAY_ACCESS: - print_array_expression(&expression->array_access); - break; - case EXPR_LABEL_ADDRESS: - print_label_address_expression(&expression->label_address); - break; - EXPR_UNARY_CASES - print_unary_expression(&expression->unary); - break; - case EXPR_SIZEOF: + print_char('('); + switch (expr->kind) { case EXPR_ALIGNOF: - print_typeprop_expression(&expression->typeprop); - break; - case EXPR_BUILTIN_CONSTANT_P: - print_builtin_constant(&expression->builtin_constant); - break; - case EXPR_BUILTIN_TYPES_COMPATIBLE_P: - print_builtin_types_compatible(&expression->builtin_types_compatible); - break; - case EXPR_CONDITIONAL: - print_conditional(&expression->conditional); - break; - case EXPR_VA_START: - print_va_start(&expression->va_starte); - break; - 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; - case EXPR_CLASSIFY_TYPE: - print_classify_type_expression(&expression->classify_type); + case EXPR_SIZEOF: print_typeprop_expression( &expr->typeprop); break; + case EXPR_ARRAY_ACCESS: print_array_expression( &expr->array_access); break; + case EXPR_BINARY_CASES: print_binary_expression( &expr->binary); break; + case EXPR_BUILTIN_CONSTANT_P: print_builtin_constant( &expr->builtin_constant); break; + case EXPR_BUILTIN_TYPES_COMPATIBLE_P: print_builtin_types_compatible(&expr->builtin_types_compatible); break; + case EXPR_CALL: print_call_expression( &expr->call); break; + case EXPR_CLASSIFY_TYPE: print_classify_type_expression(&expr->classify_type); break; + case EXPR_COMPOUND_LITERAL: print_compound_literal( &expr->compound_literal); break; + case EXPR_CONDITIONAL: print_conditional( &expr->conditional); break; + case EXPR_ERROR: print_string("$error$"); break; + case EXPR_FUNCNAME: print_funcname( &expr->funcname); break; + case EXPR_LABEL_ADDRESS: print_label_address_expression(&expr->label_address); break; + case EXPR_LITERAL_CASES: print_literal( &expr->literal); break; + case EXPR_LITERAL_CHARACTER: print_string_literal( &expr->string_literal, '\''); break; + case EXPR_OFFSETOF: print_offsetof_expression( &expr->offsetofe); break; + case EXPR_REFERENCE: + case EXPR_ENUM_CONSTANT: print_reference_expression( &expr->reference); break; + case EXPR_SELECT: print_select( &expr->select); break; + case EXPR_STATEMENT: print_statement_expression( &expr->statement); break; + case EXPR_STRING_LITERAL: print_string_literal( &expr->string_literal, '"'); break; + case EXPR_UNARY_CASES: print_unary_expression( &expr->unary); break; + case EXPR_VA_ARG: print_va_arg( &expr->va_arge); break; + case EXPR_VA_COPY: print_va_copy( &expr->va_copye); break; + case EXPR_VA_START: print_va_start( &expr->va_starte); break; + } + if (parenthesized) + print_char(')'); +} + +static void print_indented_statement(statement_t const *const stmt) +{ + switch (stmt->kind) { + case STATEMENT_LABEL: break; - case EXPR_OFFSETOF: - print_offsetof_expression(&expression->offsetofe); + + case STATEMENT_CASE_LABEL: + for (int i = 0; i != case_indent; ++i) + print_char('\t'); break; - case EXPR_STATEMENT: - print_statement_expression(&expression->statement); + + default: + print_indent(); break; } - if (parenthesized) - print_string(")"); + print_statement(stmt); } /** @@ -766,19 +732,14 @@ static void print_compound_statement(const compound_statement_t *block) print_string("{\n"); ++indent; - statement_t *statement = block->statements; - while (statement != NULL) { - if (statement->base.kind == STATEMENT_CASE_LABEL) - --indent; - if (statement->kind != STATEMENT_LABEL) - print_indent(); - print_statement(statement); - - statement = statement->base.next; + for (statement_t const *stmt = block->statements; stmt; stmt = stmt->base.next) { + print_indented_statement(stmt); + print_char('\n'); } + --indent; print_indent(); - print_string(block->stmt_expr ? "}" : "}\n"); + print_char('}'); } /** @@ -792,9 +753,9 @@ static void print_return_statement(const return_statement_t *statement) if (val != NULL) { print_string("return "); print_expression(val); - print_string(";\n"); + print_char(';'); } else { - print_string("return;\n"); + print_string("return;"); } } @@ -806,7 +767,19 @@ static void print_return_statement(const return_statement_t *statement) static void print_expression_statement(const expression_statement_t *statement) { print_expression(statement->expression); - print_string(";\n"); + print_char(';'); +} + +/** + * Print a computed goto statement. + * + * @param statement the computed goto statement + */ +static void print_computed_goto_statement(computed_goto_statement_t const *const stmt) +{ + print_string("goto *"); + print_expression(stmt->expression); + print_char(';'); } /** @@ -817,13 +790,8 @@ static void print_expression_statement(const expression_statement_t *statement) static void print_goto_statement(const goto_statement_t *statement) { print_string("goto "); - if (statement->expression != NULL) { - print_string("*"); - print_expression(statement->expression); - } else { - print_string(statement->label->base.symbol->string); - } - print_string(";\n"); + print_string(statement->label->base.symbol->string); + print_char(';'); } /** @@ -834,8 +802,30 @@ static void print_goto_statement(const goto_statement_t *statement) static void print_label_statement(const label_statement_t *statement) { print_format("%s:\n", statement->label->base.symbol->string); - print_indent(); - print_statement(statement->statement); + print_indented_statement(statement->statement); +} + +static void print_inner_statement(statement_t const *const stmt) +{ + if (stmt->kind == STATEMENT_COMPOUND) { + print_char(' '); + print_compound_statement(&stmt->compound); + } else { + print_char('\n'); + ++indent; + print_indented_statement(stmt); + --indent; + } +} + +static void print_after_inner_statement(statement_t const *const stmt) +{ + if (stmt->kind == STATEMENT_COMPOUND) { + print_char(' '); + } else { + print_char('\n'); + print_indent(); + } } /** @@ -847,13 +837,19 @@ static void print_if_statement(const if_statement_t *statement) { print_string("if ("); print_expression(statement->condition); - print_string(") "); - print_statement(statement->true_statement); - - if (statement->false_statement != NULL) { - print_indent(); - print_string("else "); - print_statement(statement->false_statement); + print_char(')'); + print_inner_statement(statement->true_statement); + + statement_t const *const f = statement->false_statement; + if (f) { + print_after_inner_statement(statement->true_statement); + print_string("else"); + if (f->kind == STATEMENT_IF) { + print_char(' '); + print_if_statement(&f->ifs); + } else { + print_inner_statement(f); + } } } @@ -864,10 +860,15 @@ static void print_if_statement(const if_statement_t *statement) */ static void print_switch_statement(const switch_statement_t *statement) { + int const old_case_indent = case_indent; + case_indent = indent; + print_string("switch ("); print_expression(statement->expression); - print_string(") "); - print_statement(statement->body); + print_char(')'); + print_inner_statement(statement->body); + + case_indent = old_case_indent; } /** @@ -888,21 +889,14 @@ static void print_case_label(const case_label_statement_t *statement) } print_string(":\n"); } - ++indent; - if (statement->statement != NULL) { - if (statement->statement->base.kind == STATEMENT_CASE_LABEL) { - --indent; - } - print_indent(); - print_statement(statement->statement); - } + print_indented_statement(statement->statement); } static void print_typedef(const entity_t *entity) { print_string("typedef "); print_type_ext(entity->typedefe.type, entity->base.symbol, NULL); - print_string(";"); + print_char(';'); } /** @@ -931,7 +925,7 @@ static void print_declaration_statement( bool first = true; entity_t *entity = statement->declarations_begin; if (entity == NULL) { - print_string("/* empty declaration statement */\n"); + print_string("/* empty declaration statement */"); return; } @@ -943,13 +937,13 @@ static void print_declaration_statement( continue; if (!first) { + print_char('\n'); print_indent(); } else { first = false; } print_entity(entity); - print_string("\n"); } } @@ -962,8 +956,8 @@ static void print_while_statement(const while_statement_t *statement) { print_string("while ("); print_expression(statement->condition); - print_string(") "); - print_statement(statement->body); + print_char(')'); + print_inner_statement(statement->body); } /** @@ -973,12 +967,12 @@ static void print_while_statement(const while_statement_t *statement) */ static void print_do_while_statement(const do_while_statement_t *statement) { - print_string("do "); - print_statement(statement->body); - print_indent(); + print_string("do"); + print_inner_statement(statement->body); + print_after_inner_statement(statement->body); print_string("while ("); print_expression(statement->condition); - print_string(");\n"); + print_string(");"); } /** @@ -991,7 +985,7 @@ static void print_for_statement(const for_statement_t *statement) print_string("for ("); if (statement->initialisation != NULL) { print_expression(statement->initialisation); - print_string(";"); + print_char(';'); } else { entity_t const *entity = statement->scope.entities; for (; entity != NULL; entity = entity->base.next) { @@ -1002,16 +996,16 @@ static void print_for_statement(const for_statement_t *statement) } } if (statement->condition != NULL) { - print_string(" "); + print_char(' '); print_expression(statement->condition); } - print_string(";"); + print_char(';'); if (statement->step != NULL) { - print_string(" "); + print_char(' '); print_expression(statement->step); } - print_string(") "); - print_statement(statement->body); + print_char(')'); + print_inner_statement(statement->body); } /** @@ -1029,10 +1023,10 @@ static void print_asm_arguments(asm_argument_t *arguments) if (argument->symbol) { print_format("[%s] ", argument->symbol->string); } - print_quoted_string(&argument->constraints, '"', 1); + print_quoted_string(&argument->constraints, '"'); print_string(" ("); print_expression(argument->expression); - print_string(")"); + print_char(')'); } } @@ -1048,7 +1042,7 @@ static void print_asm_clobbers(asm_clobber_t *clobbers) if (clobber != clobbers) print_string(", "); - print_quoted_string(&clobber->clobber, '"', 1); + print_quoted_string(&clobber->clobber, '"'); } } @@ -1063,8 +1057,8 @@ static void print_asm_statement(const asm_statement_t *statement) if (statement->is_volatile) { print_string("volatile "); } - print_string("("); - print_quoted_string(&statement->asm_text, '"', 1); + print_char('('); + print_quoted_string(&statement->asm_text, '"'); if (statement->outputs == NULL && statement->inputs == NULL && statement->clobbers == NULL) @@ -1084,7 +1078,7 @@ static void print_asm_statement(const asm_statement_t *statement) print_asm_clobbers(statement->clobbers); end_of_print_asm_statement: - print_string(");\n"); + print_string(");"); } /** @@ -1094,17 +1088,17 @@ end_of_print_asm_statement: */ static void print_ms_try_statement(const ms_try_statement_t *statement) { - print_string("__try "); - print_statement(statement->try_statement); - print_indent(); + print_string("__try"); + print_inner_statement(statement->try_statement); + print_after_inner_statement(statement->try_statement); if (statement->except_expression != NULL) { print_string("__except("); print_expression(statement->except_expression); - print_string(") "); + print_char(')'); } else { - print_string("__finally "); + print_string("__finally"); } - print_statement(statement->final_statement); + print_inner_statement(statement->final_statement); } /** @@ -1115,7 +1109,7 @@ static void print_ms_try_statement(const ms_try_statement_t *statement) static void print_leave_statement(const leave_statement_t *statement) { (void)statement; - print_string("__leave;\n"); + print_string("__leave;"); } /** @@ -1123,66 +1117,29 @@ static void print_leave_statement(const leave_statement_t *statement) * * @param statement the statement */ -void print_statement(const statement_t *statement) -{ - switch (statement->kind) { - case STATEMENT_EMPTY: - print_string(";\n"); - break; - case STATEMENT_COMPOUND: - print_compound_statement(&statement->compound); - break; - case STATEMENT_RETURN: - print_return_statement(&statement->returns); - break; - case STATEMENT_EXPRESSION: - print_expression_statement(&statement->expression); - break; - case STATEMENT_LABEL: - print_label_statement(&statement->label); - break; - case STATEMENT_GOTO: - print_goto_statement(&statement->gotos); - break; - case STATEMENT_CONTINUE: - print_string("continue;\n"); - break; - case STATEMENT_BREAK: - print_string("break;\n"); - break; - case STATEMENT_IF: - print_if_statement(&statement->ifs); - break; - case STATEMENT_SWITCH: - print_switch_statement(&statement->switchs); - break; - case STATEMENT_CASE_LABEL: - print_case_label(&statement->case_label); - break; - case STATEMENT_DECLARATION: - print_declaration_statement(&statement->declaration); - break; - case STATEMENT_WHILE: - print_while_statement(&statement->whiles); - break; - case STATEMENT_DO_WHILE: - print_do_while_statement(&statement->do_while); - break; - case STATEMENT_FOR: - print_for_statement(&statement->fors); - break; - case STATEMENT_ASM: - print_asm_statement(&statement->asms); - break; - case STATEMENT_MS_TRY: - print_ms_try_statement(&statement->ms_try); - break; - case STATEMENT_LEAVE: - print_leave_statement(&statement->leave); - break; - case STATEMENT_ERROR: - print_string("$error statement$\n"); - break; +void print_statement(statement_t const *const stmt) +{ + switch (stmt->kind) { + case STATEMENT_ASM: print_asm_statement( &stmt->asms); break; + case STATEMENT_BREAK: print_string("break;"); break; + case STATEMENT_CASE_LABEL: print_case_label( &stmt->case_label); break; + case STATEMENT_COMPOUND: print_compound_statement( &stmt->compound); break; + case STATEMENT_COMPUTED_GOTO: print_computed_goto_statement(&stmt->computed_goto); break; + case STATEMENT_CONTINUE: print_string("continue;"); break; + case STATEMENT_DECLARATION: print_declaration_statement( &stmt->declaration); break; + case STATEMENT_DO_WHILE: print_do_while_statement( &stmt->do_while); break; + case STATEMENT_EMPTY: print_char(';'); break; + case STATEMENT_ERROR: print_string("$error statement$"); break; + case STATEMENT_EXPRESSION: print_expression_statement( &stmt->expression); break; + case STATEMENT_FOR: print_for_statement( &stmt->fors); break; + case STATEMENT_GOTO: print_goto_statement( &stmt->gotos); break; + case STATEMENT_IF: print_if_statement( &stmt->ifs); break; + case STATEMENT_LABEL: print_label_statement( &stmt->label); break; + case STATEMENT_LEAVE: print_leave_statement( &stmt->leave); break; + case STATEMENT_MS_TRY: print_ms_try_statement( &stmt->ms_try); break; + case STATEMENT_RETURN: print_return_statement( &stmt->returns); break; + case STATEMENT_SWITCH: print_switch_statement( &stmt->switchs); break; + case STATEMENT_WHILE: print_while_statement( &stmt->whiles); break; } } @@ -1217,13 +1174,12 @@ void print_initializer(const initializer_t *initializer) } switch (initializer->kind) { - case INITIALIZER_VALUE: { - const initializer_value_t *value = &initializer->value; - print_assignment_expression(value->value); + case INITIALIZER_STRING: + case INITIALIZER_VALUE: + print_assignment_expression(initializer->value.value); return; - } + case INITIALIZER_LIST: { - assert(initializer->kind == INITIALIZER_LIST); print_string("{ "); const initializer_list_t *list = &initializer->list; @@ -1238,12 +1194,7 @@ void print_initializer(const initializer_t *initializer) print_string(" }"); return; } - case INITIALIZER_STRING: - print_quoted_string(&initializer->string.string, '"', 1); - return; - case INITIALIZER_WIDE_STRING: - print_quoted_string(&initializer->string.string, '"', 1); - return; + case INITIALIZER_DESIGNATOR: print_designator(initializer->designator.designator); print_string(" = "); @@ -1290,7 +1241,7 @@ static void print_ms_modifiers(const declaration_t *declaration) } if (variable->put_property_sym != NULL) print_format("%sput=%s", comma, variable->put_property_sym->string); - print_string(")"); + print_char(')'); } } } @@ -1353,7 +1304,7 @@ static void print_scope(const scope_t *scope) for ( ; entity != NULL; entity = entity->base.next) { print_indent(); print_entity(entity); - print_string("\n"); + print_char('\n'); } } @@ -1362,7 +1313,7 @@ static void print_namespace(const namespace_t *namespace) print_string("namespace "); if (namespace->base.symbol != NULL) { print_string(namespace->base.symbol->string); - print_string(" "); + print_char(' '); } print_string("{\n"); @@ -1403,9 +1354,9 @@ void print_declaration(const entity_t *entity) &entity->function.parameters); if (entity->function.statement != NULL) { - print_string("\n"); - print_indent(); - print_statement(entity->function.statement); + print_char('\n'); + print_indented_statement(entity->function.statement); + print_char('\n'); return; } break; @@ -1431,7 +1382,7 @@ void print_declaration(const entity_t *entity) print_type_ext(declaration->type, declaration->base.symbol, NULL); break; } - print_string(";"); + print_char(';'); } /** @@ -1478,17 +1429,17 @@ void print_entity(const entity_t *entity) print_compound: print_string(entity->base.symbol->string); if (entity->compound.complete) { - print_string(" "); + print_char(' '); print_compound_definition(&entity->compound); } - print_string(";"); + print_char(';'); return; case ENTITY_ENUM: print_string("enum "); print_string(entity->base.symbol->string); - print_string(" "); + print_char(' '); print_enum_definition(&entity->enume); - print_string(";"); + print_char(';'); return; case ENTITY_NAMESPACE: print_namespace(&entity->namespacee); @@ -1496,13 +1447,11 @@ print_compound: case ENTITY_LOCAL_LABEL: print_string("__label__ "); print_string(entity->base.symbol->string); - print_string(";"); + print_char(';'); return; case ENTITY_LABEL: case ENTITY_ENUM_VALUE: panic("print_entity used on unexpected entity type"); - case ENTITY_INVALID: - break; } panic("Invalid entity type encountered"); } @@ -1526,7 +1475,7 @@ void print_ast(const translation_unit_t *unit) print_indent(); print_entity(entity); - print_string("\n"); + print_char('\n'); } } @@ -1534,12 +1483,11 @@ expression_classification_t is_constant_initializer(const initializer_t *initial { switch (initializer->kind) { case INITIALIZER_STRING: - case INITIALIZER_WIDE_STRING: case INITIALIZER_DESIGNATOR: return EXPR_CLASS_CONSTANT; case INITIALIZER_VALUE: - return is_constant_expression(initializer->value.value); + return is_linker_constant(initializer->value.value); case INITIALIZER_LIST: { expression_classification_t all = EXPR_CLASS_CONSTANT; @@ -1620,11 +1568,13 @@ expression_classification_t is_linker_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 EXPR_CLASS_CONSTANT; + case EXPR_COMPOUND_LITERAL: + return is_constant_initializer(expression->compound_literal.initializer); + case EXPR_UNARY_TAKE_ADDRESS: return is_object_with_linker_constant_address(expression->unary.value); @@ -1645,11 +1595,9 @@ expression_classification_t is_linker_constant(const expression_t *expression) !(get_atomic_type_flags(dest->atomic.akind) & ATOMIC_TYPE_FLAG_INTEGER) || get_atomic_type_size(dest->atomic.akind) < get_type_size(type_void_ptr) )) - return EXPR_CLASS_VARIABLE; + return is_constant_expression(expression); - expression_classification_t const expr = is_constant_expression(expression->unary.value); - expression_classification_t const addr = is_linker_constant(expression->unary.value); - return expr > addr ? expr : addr; + return is_linker_constant(expression->unary.value); } case EXPR_BINARY_ADD: @@ -1670,7 +1618,7 @@ expression_classification_t is_linker_constant(const expression_t *expression) } else if (!is_type_valid(ltype) || !is_type_valid(rtype)) { return EXPR_CLASS_ERROR; } else { - return EXPR_CLASS_VARIABLE; + return is_constant_expression(expression); } } @@ -1696,9 +1644,7 @@ expression_classification_t is_linker_constant(const expression_t *expression) skip_typeref(revert_automatic_type_conversion(expression)); if (!is_type_array(type)) return EXPR_CLASS_VARIABLE; - expression_classification_t const ref = is_linker_constant(expression->array_access.array_ref); - expression_classification_t const idx = is_constant_expression(expression->array_access.index); - return ref < idx ? ref : idx; + return is_linker_constant(expression->array_access.array_ref); } case EXPR_CONDITIONAL: { @@ -1734,11 +1680,8 @@ expression_classification_t is_linker_constant(const expression_t *expression) return EXPR_CLASS_VARIABLE; } - case EXPR_ERROR: - return EXPR_CLASS_ERROR; - default: - return EXPR_CLASS_VARIABLE; + return is_constant_expression(expression); } } @@ -1756,15 +1699,8 @@ static expression_classification_t is_builtin_const_call(const expression_t *exp return EXPR_CLASS_VARIABLE; switch (ref->entity->function.btk) { - case bk_gnu_builtin_huge_val: - case bk_gnu_builtin_huge_valf: - case bk_gnu_builtin_huge_vall: - 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: + case BUILTIN_INF: + case BUILTIN_NAN: return EXPR_CLASS_CONSTANT; default: return EXPR_CLASS_VARIABLE; @@ -1825,13 +1761,14 @@ static expression_classification_t is_object_with_constant_address(const express expression_classification_t is_constant_expression(const expression_t *expression) { switch (expression->kind) { - EXPR_LITERAL_CASES + case EXPR_LITERAL_CASES: + case EXPR_LITERAL_CHARACTER: case EXPR_CLASSIFY_TYPE: case EXPR_OFFSETOF: case EXPR_ALIGNOF: case EXPR_BUILTIN_CONSTANT_P: case EXPR_BUILTIN_TYPES_COMPATIBLE_P: - case EXPR_REFERENCE_ENUM_VALUE: + case EXPR_ENUM_CONSTANT: return EXPR_CLASS_CONSTANT; case EXPR_SIZEOF: { @@ -1842,7 +1779,6 @@ expression_classification_t is_constant_expression(const expression_t *expressio } case EXPR_STRING_LITERAL: - case EXPR_WIDE_STRING_LITERAL: case EXPR_FUNCNAME: case EXPR_LABEL_ADDRESS: case EXPR_SELECT: