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gnu / gcc / 19220ca6aa79921cc431e41f25986e16410c7a6a / . / gcc / c-pretty-print.c
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/* Subroutines common to both C and C++ pretty-printers.
Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
Contributed by Gabriel Dos Reis <gdr@integrable-solutions.net>
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "real.h"
#include "c-pretty-print.h"
#include "c-tree.h"
/* The pretty-printer code is primarily designed to closely follow
(GNU) C and C++ grammars. That is to be contrasted with spaghetti
codes we used to have in the past. Following a structured
approach (preferably the official grammars) is believed to make it
much easier to add extensions and nifty pretty-printing effects that
takes expression or declaration contexts into account. */
#define pp_c_maybe_whitespace(PP) \
do { \
if (pp_base (PP)->padding == pp_before) \
pp_c_whitespace (PP); \
} while (0)
#define pp_c_left_bracket(PP) \
do { \
pp_left_bracket (PP); \
pp_base (PP)->padding = pp_none; \
} while (0)
#define pp_c_right_bracket(PP) \
do { \
pp_right_bracket (PP); \
pp_base (PP)->padding = pp_none; \
} while (0)
#define pp_c_star(PP) \
do { \
pp_star (PP); \
pp_base (PP)->padding = pp_none; \
} while (0)
/* literal */
static void pp_c_char (c_pretty_printer *, int);
/* postfix-expression */
static void pp_c_initializer_list (c_pretty_printer *, tree);
static void pp_c_brace_enclosed_initializer_list (c_pretty_printer *, tree);
static void pp_c_multiplicative_expression (c_pretty_printer *, tree);
static void pp_c_additive_expression (c_pretty_printer *, tree);
static void pp_c_shift_expression (c_pretty_printer *, tree);
static void pp_c_relational_expression (c_pretty_printer *, tree);
static void pp_c_equality_expression (c_pretty_printer *, tree);
static void pp_c_and_expression (c_pretty_printer *, tree);
static void pp_c_exclusive_or_expression (c_pretty_printer *, tree);
static void pp_c_inclusive_or_expression (c_pretty_printer *, tree);
static void pp_c_logical_and_expression (c_pretty_printer *, tree);
static void pp_c_conditional_expression (c_pretty_printer *, tree);
static void pp_c_assignment_expression (c_pretty_printer *, tree);
/* declarations. */
/* Helper functions. */
void
pp_c_whitespace (c_pretty_printer *pp)
{
pp_space (pp);
pp_base (pp)->padding = pp_none;
}
void
pp_c_left_paren (c_pretty_printer *pp)
{
pp_left_paren (pp);
pp_base (pp)->padding = pp_none;
}
void
pp_c_right_paren (c_pretty_printer *pp)
{
pp_right_paren (pp);
pp_base (pp)->padding = pp_none;
}
void
pp_c_left_brace (c_pretty_printer *pp)
{
pp_left_brace (pp);
pp_base (pp)->padding = pp_none;
}
void
pp_c_right_brace (c_pretty_printer *pp)
{
pp_right_brace (pp);
pp_base (pp)->padding = pp_none;
}
void
pp_c_dot (c_pretty_printer *pp)
{
pp_dot (pp);
pp_base (pp)->padding = pp_none;
}
void
pp_c_ampersand (c_pretty_printer *pp)
{
pp_ampersand (pp);
pp_base (pp)->padding = pp_none;
}
void
pp_c_arrow (c_pretty_printer *pp)
{
pp_arrow (pp);
pp_base (pp)->padding = pp_none;
}
void
pp_c_semicolon(c_pretty_printer *pp)
{
pp_semicolon (pp);
pp_base (pp)->padding = pp_none;
}
static void
pp_c_cv_qualifier (c_pretty_printer *pp, const char *cv)
{
const char *p = pp_last_position_in_text (pp);
if (p != NULL && *p == '*')
pp_c_whitespace (pp);
pp_c_identifier (pp, cv);
}
/* Pretty-print T using the type-cast notation '( type-name )'. */
static void
pp_c_type_cast (c_pretty_printer *pp, tree t)
{
pp_c_left_paren (pp);
pp_type_id (pp, t);
pp_c_right_paren (pp);
}
void
pp_c_space_for_pointer_operator (c_pretty_printer *pp, tree t)
{
if (POINTER_TYPE_P (t))
{
tree pointee = strip_pointer_operator (TREE_TYPE (t));
if (TREE_CODE (pointee) != ARRAY_TYPE
&& TREE_CODE (pointee) != FUNCTION_TYPE)
pp_c_whitespace (pp);
}
}
/* Declarations. */
/* C++ cv-qualifiers are called type-qualifiers in C. Print out the
cv-qualifiers of T. If T is a declaration then it is the cv-qualifier
of its type. Take care of possible extensions.
type-qualifier-list:
type-qualifier
type-qualifier-list type-qualifier
type-qualifier:
const
restrict -- C99
__restrict__ -- GNU C
volatile */
void
pp_c_type_qualifier_list (c_pretty_printer *pp, tree t)
{
int qualifiers;
if (!TYPE_P (t))
t = TREE_TYPE (t);
qualifiers = TYPE_QUALS (t);
if (qualifiers & TYPE_QUAL_CONST)
pp_c_cv_qualifier (pp, "const");
if (qualifiers & TYPE_QUAL_VOLATILE)
pp_c_cv_qualifier (pp, "volatile");
if (qualifiers & TYPE_QUAL_RESTRICT)
pp_c_cv_qualifier (pp, flag_isoc99 ? "restrict" : "__restrict__");
}
/* pointer:
* type-qualifier-list(opt)
* type-qualifier-list(opt) pointer */
static void
pp_c_pointer (c_pretty_printer *pp, tree t)
{
if (!TYPE_P (t) && TREE_CODE (t) != TYPE_DECL)
t = TREE_TYPE (t);
switch (TREE_CODE (t))
{
case POINTER_TYPE:
/* It is easier to handle C++ reference types here. */
case REFERENCE_TYPE:
if (TREE_CODE (TREE_TYPE (t)) == POINTER_TYPE)
pp_c_pointer (pp, TREE_TYPE (t));
if (TREE_CODE (t) == POINTER_TYPE)
pp_c_star (pp);
else
pp_c_ampersand (pp);
pp_c_type_qualifier_list (pp, t);
break;
default:
pp_unsupported_tree (pp, t);
}
}
/* type-specifier:
void
char
short
int
long
float
double
signed
unsigned
_Bool -- C99
_Complex -- C99
_Imaginary -- C99
struct-or-union-specifier
enum-specifier
typedef-name.
GNU extensions.
simple-type-specifier:
__complex__
__vector__ */
void
pp_c_type_specifier (c_pretty_printer *pp, tree t)
{
const enum tree_code code = TREE_CODE (t);
switch (code)
{
case ERROR_MARK:
pp_c_identifier (pp, "<type-error>");
break;
case IDENTIFIER_NODE:
pp_c_tree_identifier (pp, t);
break;
case VOID_TYPE:
case BOOLEAN_TYPE:
case CHAR_TYPE:
case INTEGER_TYPE:
case REAL_TYPE:
if (TYPE_NAME (t))
t = TYPE_NAME (t);
else
t = c_common_type_for_mode (TYPE_MODE (t), TREE_UNSIGNED (t));
pp_c_type_specifier (pp, t);
break;
case TYPE_DECL:
if (DECL_NAME (t))
pp_id_expression (pp, t);
else
pp_c_identifier (pp, "<typedef-error>");
break;
case UNION_TYPE:
case RECORD_TYPE:
case ENUMERAL_TYPE:
if (code == UNION_TYPE)
pp_c_identifier (pp, "union");
else if (code == RECORD_TYPE)
pp_c_identifier (pp, "struct");
else if (code == ENUMERAL_TYPE)
pp_c_identifier (pp, "enum");
else
pp_c_identifier (pp, "<tag-error>");
if (TYPE_NAME (t))
pp_id_expression (pp, TYPE_NAME (t));
else
pp_c_identifier (pp, "<anonymous>");
break;
default:
pp_unsupported_tree (pp, t);
break;
}
}
/* specifier-qualifier-list:
type-specifier specifier-qualifier-list-opt
type-qualifier specifier-qualifier-list-opt
Implementation note: Because of the non-linearities in array or
function declarations, this routine prints not just the
specifier-qualifier-list of such entities or types of such entities,
but also the 'pointer' production part of their declarators. The
remaining part is done by pp_declarator or pp_c_abstract_declarator. */
void
pp_c_specifier_qualifier_list (c_pretty_printer *pp, tree t)
{
const enum tree_code code = TREE_CODE (t);
if (TREE_CODE (t) != POINTER_TYPE)
pp_c_type_qualifier_list (pp, t);
switch (code)
{
case REFERENCE_TYPE:
case POINTER_TYPE:
{
/* Get the types-specifier of this type. */
tree pointee = strip_pointer_operator (TREE_TYPE (t));
pp_c_specifier_qualifier_list (pp, pointee);
if (TREE_CODE (pointee) == ARRAY_TYPE
|| TREE_CODE (pointee) == FUNCTION_TYPE)
{
pp_c_whitespace (pp);
pp_c_left_paren (pp);
}
pp_ptr_operator (pp, t);
}
break;
case FUNCTION_TYPE:
case ARRAY_TYPE:
pp_c_specifier_qualifier_list (pp, TREE_TYPE (t));
break;
case VECTOR_TYPE:
case COMPLEX_TYPE:
pp_c_specifier_qualifier_list (pp, TREE_TYPE (t));
if (code == COMPLEX_TYPE)
pp_c_identifier (pp, flag_isoc99 ? "_Complex" : "__complex__");
else if (code == VECTOR_TYPE)
pp_c_identifier (pp, "__vector__");
break;
default:
pp_simple_type_specifier (pp, t);
break;
}
}
/* parameter-type-list:
parameter-list
parameter-list , ...
parameter-list:
parameter-declaration
parameter-list , parameter-declaration
parameter-declaration:
declaration-specifiers declarator
declaration-specifiers abstract-declarator(opt) */
void
pp_c_parameter_type_list (c_pretty_printer *pp, tree t)
{
bool want_parm_decl = DECL_P (t) && !(pp->flags & pp_c_flag_abstract);
tree parms = want_parm_decl ? DECL_ARGUMENTS (t) : TYPE_ARG_TYPES (t);
pp_c_left_paren (pp);
if (parms == void_list_node)
pp_c_identifier (pp, "void");
else
{
bool first = true;
for ( ; parms && parms != void_list_node; parms = TREE_CHAIN (parms))
{
if (!first)
pp_separate_with (pp, ',');
first = false;
pp_declaration_specifiers
(pp, want_parm_decl ? parms : TREE_VALUE (parms));
if (want_parm_decl)
pp_declarator (pp, parms);
else
pp_abstract_declarator (pp, TREE_VALUE (parms));
}
}
pp_c_right_paren (pp);
}
/* abstract-declarator:
pointer
pointer(opt) direct-abstract-declarator */
static void
pp_c_abstract_declarator (c_pretty_printer *pp, tree t)
{
if (TREE_CODE (t) == POINTER_TYPE)
{
if (TREE_CODE (TREE_TYPE (t)) == ARRAY_TYPE
|| TREE_CODE (TREE_TYPE (t)) == FUNCTION_TYPE)
pp_c_right_paren (pp);
t = TREE_TYPE (t);
}
pp_direct_abstract_declarator (pp, t);
}
/* direct-abstract-declarator:
( abstract-declarator )
direct-abstract-declarator(opt) [ assignment-expression(opt) ]
direct-abstract-declarator(opt) [ * ]
direct-abstract-declarator(opt) ( parameter-type-list(opt) ) */
void
pp_c_direct_abstract_declarator (c_pretty_printer *pp, tree t)
{
switch (TREE_CODE (t))
{
case POINTER_TYPE:
pp_abstract_declarator (pp, t);
break;
case FUNCTION_TYPE:
pp_c_parameter_type_list (pp, t);
pp_direct_abstract_declarator (pp, TREE_TYPE (t));
break;
case ARRAY_TYPE:
pp_c_left_bracket (pp);
if (TYPE_DOMAIN (t))
pp_expression (pp, TYPE_MAX_VALUE (TYPE_DOMAIN (t)));
pp_c_right_bracket (pp);
pp_direct_abstract_declarator (pp, TREE_TYPE (t));
break;
case IDENTIFIER_NODE:
case VOID_TYPE:
case BOOLEAN_TYPE:
case INTEGER_TYPE:
case REAL_TYPE:
case ENUMERAL_TYPE:
case RECORD_TYPE:
case UNION_TYPE:
case VECTOR_TYPE:
case COMPLEX_TYPE:
case TYPE_DECL:
break;
default:
pp_unsupported_tree (pp, t);
break;
}
}
/* type-name:
specifier-qualifier-list abstract-declarator(opt) */
void
pp_c_type_id (c_pretty_printer *pp, tree t)
{
pp_c_specifier_qualifier_list (pp, t);
pp_abstract_declarator (pp, t);
}
/* storage-class-specifier:
typedef
extern
static
auto
register */
void
pp_c_storage_class_specifier (c_pretty_printer *pp, tree t)
{
if (TREE_CODE (t) == TYPE_DECL)
pp_c_identifier (pp, "typedef");
else if (DECL_P (t))
{
if (DECL_REGISTER (t))
pp_c_identifier (pp, "register");
else if (TREE_STATIC (t) && TREE_CODE (t) == VAR_DECL)
pp_c_identifier (pp, "static");
}
}
/* function-specifier:
inline */
void
pp_c_function_specifier (c_pretty_printer *pp, tree t)
{
if (TREE_CODE (t) == FUNCTION_DECL && DECL_DECLARED_INLINE_P (t))
pp_c_identifier (pp, "inline");
}
/* declaration-specifiers:
storage-class-specifier declaration-specifiers(opt)
type-specifier declaration-specifiers(opt)
type-qualifier declaration-specifiers(opt)
function-specifier declaration-specifiers(opt) */
void
pp_c_declaration_specifiers (c_pretty_printer *pp, tree t)
{
pp_storage_class_specifier (pp, t);
pp_function_specifier (pp, t);
pp_c_specifier_qualifier_list (pp, DECL_P (t) ? TREE_TYPE (t) : t);
}
/* direct-declarator
identifier
( declarator )
direct-declarator [ type-qualifier-list(opt) assignment-expression(opt) ]
direct-declarator [ static type-qualifier-list(opt) assignment-expression(opt)]
direct-declarator [ type-qualifier-list static assignment-expression ]
direct-declarator [ type-qualifier-list * ]
direct-declaratpr ( parameter-type-list )
direct-declarator ( identifier-list(opt) ) */
void
pp_c_direct_declarator (c_pretty_printer *pp, tree t)
{
switch (TREE_CODE (t))
{
case VAR_DECL:
case PARM_DECL:
case TYPE_DECL:
case FIELD_DECL:
case LABEL_DECL:
if (DECL_NAME (t))
{
pp_c_space_for_pointer_operator (pp, TREE_TYPE (t));
pp_c_tree_identifier (pp, DECL_NAME (t));
}
case ARRAY_TYPE:
case POINTER_TYPE:
pp_abstract_declarator (pp, TREE_TYPE (t));
break;
case FUNCTION_TYPE:
pp_parameter_list (pp, t);
pp_abstract_declarator (pp, TREE_TYPE (t));
break;
case FUNCTION_DECL:
pp_c_space_for_pointer_operator (pp, TREE_TYPE (TREE_TYPE (t)));
pp_c_tree_identifier (pp, DECL_NAME (t));
if (pp_c_base (pp)->flags & pp_c_flag_abstract)
pp_abstract_declarator (pp, TREE_TYPE (t));
else
{
pp_parameter_list (pp, t);
pp_abstract_declarator (pp, TREE_TYPE (TREE_TYPE (t)));
}
break;
case INTEGER_TYPE:
case REAL_TYPE:
case ENUMERAL_TYPE:
case UNION_TYPE:
case RECORD_TYPE:
break;
default:
pp_unsupported_tree (pp, t);
break;
}
}
/* declarator:
pointer(opt) direct-declarator */
void
pp_c_declarator (c_pretty_printer *pp, tree t)
{
switch (TREE_CODE (t))
{
case INTEGER_TYPE:
case REAL_TYPE:
case ENUMERAL_TYPE:
case UNION_TYPE:
case RECORD_TYPE:
break;
case VAR_DECL:
case PARM_DECL:
case FIELD_DECL:
case ARRAY_TYPE:
case FUNCTION_TYPE:
case FUNCTION_DECL:
case TYPE_DECL:
pp_direct_declarator (pp, t);
break;
default:
pp_unsupported_tree (pp, t);
break;
}
}
/* declaration:
declaration-specifiers init-declarator-list(opt) ; */
void
pp_c_declaration (c_pretty_printer *pp, tree t)
{
pp_declaration_specifiers (pp, t);
pp_c_init_declarator (pp, t);
}
/* Pretty-print ATTRIBUTES using GNU C extension syntax. */
void
pp_c_attributes (c_pretty_printer *pp, tree attributes)
{
if (attributes == NULL_TREE)
return;
pp_c_identifier (pp, "__attribute__");
pp_c_left_paren (pp);
pp_c_left_paren (pp);
for (; attributes != NULL_TREE; attributes = TREE_CHAIN (attributes))
{
pp_tree_identifier (pp, TREE_PURPOSE (attributes));
if (TREE_VALUE (attributes))
pp_c_call_argument_list (pp, TREE_VALUE (attributes));
if (TREE_CHAIN (attributes))
pp_separate_with (pp, ',');
}
pp_c_right_paren (pp);
pp_c_right_paren (pp);
}
/* function-definition:
declaration-specifiers declarator compound-statement */
void
pp_c_function_definition (c_pretty_printer *pp, tree t)
{
pp_declaration_specifiers (pp, t);
pp_declarator (pp, t);
pp_needs_newline (pp) = true;
pp_statement (pp, DECL_SAVED_TREE (t));
pp_newline (pp);
pp_flush (pp);
}
/* Expressions. */
/* Print out a c-char. */
static void
pp_c_char (c_pretty_printer *pp, int c)
{
switch (c)
{
case TARGET_NEWLINE:
pp_string (pp, "\\n");
break;
case TARGET_TAB:
pp_string (pp, "\\t");
break;
case TARGET_VT:
pp_string (pp, "\\v");
break;
case TARGET_BS:
pp_string (pp, "\\b");
break;
case TARGET_CR:
pp_string (pp, "\\r");
break;
case TARGET_FF:
pp_string (pp, "\\f");
break;
case TARGET_BELL:
pp_string (pp, "\\a");
break;
case '\\':
pp_string (pp, "\\\\");
break;
case '\'':
pp_string (pp, "\\'");
break;
case '\"':
pp_string (pp, "\\\"");
break;
default:
if (ISPRINT (c))
pp_character (pp, c);
else
pp_scalar (pp, "\\%03o", (unsigned) c);
break;
}
}
/* Print out a STRING literal. */
void
pp_c_string_literal (c_pretty_printer *pp, tree s)
{
const char *p = TREE_STRING_POINTER (s);
int n = TREE_STRING_LENGTH (s) - 1;
int i;
pp_doublequote (pp);
for (i = 0; i < n; ++i)
pp_c_char (pp, p[i]);
pp_doublequote (pp);
}
static void
pp_c_integer_constant (c_pretty_printer *pp, tree i)
{
tree type = TREE_TYPE (i);
if (TREE_INT_CST_HIGH (i) == 0)
pp_wide_integer (pp, TREE_INT_CST_LOW (i));
else
{
if (tree_int_cst_sgn (i) < 0)
{
pp_c_char (pp, '-');
i = build_int_2 (-TREE_INT_CST_LOW (i),
~TREE_INT_CST_HIGH (i) + !TREE_INT_CST_LOW (i));
}
sprintf (pp_buffer (pp)->digit_buffer,
HOST_WIDE_INT_PRINT_DOUBLE_HEX,
TREE_INT_CST_HIGH (i), TREE_INT_CST_LOW (i));
pp_string (pp, pp_buffer (pp)->digit_buffer);
}
if (TREE_UNSIGNED (type))
pp_character (pp, 'u');
if (type == long_integer_type_node || type == long_unsigned_type_node)
pp_character (pp, 'l');
else if (type == long_long_integer_type_node
|| type == long_long_unsigned_type_node)
pp_string (pp, "ll");
}
/* Print out a CHARACTER literal. */
static void
pp_c_character_constant (c_pretty_printer *pp, tree c)
{
tree type = TREE_TYPE (c);
if (type == wchar_type_node)
pp_character (pp, 'L');
pp_quote (pp);
if (host_integerp (c, TREE_UNSIGNED (type)))
pp_c_char (pp, tree_low_cst (c, TREE_UNSIGNED (type)));
else
pp_scalar (pp, "\\x%x", (unsigned) TREE_INT_CST_LOW (c));
pp_quote (pp);
}
/* Print out a BOOLEAN literal. */
static void
pp_c_bool_constant (c_pretty_printer *pp, tree b)
{
if (b == boolean_false_node)
{
if (c_dialect_cxx ())
pp_c_identifier (pp, "false");
else if (flag_isoc99)
pp_c_identifier (pp, "_False");
else
pp_unsupported_tree (pp, b);
}
else if (b == boolean_true_node)
{
if (c_dialect_cxx ())
pp_c_identifier (pp, "true");
else if (flag_isoc99)
pp_c_identifier (pp, "_True");
else
pp_unsupported_tree (pp, b);
}
else if (TREE_CODE (b) == INTEGER_CST)
pp_c_integer_constant (pp, b);
else
pp_unsupported_tree (pp, b);
}
/* Attempt to print out an ENUMERATOR. Return true on success. Else return
false; that means the value was obtained by a cast, in which case
print out the type-id part of the cast-expression -- the casted value
is then printed by pp_c_integer_literal. */
static bool
pp_c_enumeration_constant (c_pretty_printer *pp, tree e)
{
bool value_is_named = true;
tree type = TREE_TYPE (e);
tree value;
/* Find the name of this constant. */
for (value = TYPE_VALUES (type);
value != NULL_TREE && !tree_int_cst_equal (TREE_VALUE (value), e);
value = TREE_CHAIN (value))
;
if (value != NULL_TREE)
pp_id_expression (pp, TREE_PURPOSE (value));
else
{
/* Value must have been cast. */
pp_c_type_cast (pp, type);
value_is_named = false;
}
return value_is_named;
}
/* Print out a REAL value as a decimal-floating-constant. */
static void
pp_c_floating_constant (c_pretty_printer *pp, tree r)
{
real_to_decimal (pp_buffer (pp)->digit_buffer, &TREE_REAL_CST (r),
sizeof (pp_buffer (pp)->digit_buffer), 0, 1);
pp_string (pp, pp_buffer(pp)->digit_buffer);
if (TREE_TYPE (r) == float_type_node)
pp_character (pp, 'f');
else if (TREE_TYPE (r) == long_double_type_node)
pp_character (pp, 'l');
}
/* Pretty-print a compound literal expression. GNU extensions include
vector constants. */
static void
pp_c_compound_literal (c_pretty_printer *pp, tree e)
{
tree type = TREE_TYPE (e);
pp_c_type_cast (pp, type);
switch (TREE_CODE (type))
{
case RECORD_TYPE:
case UNION_TYPE:
case ARRAY_TYPE:
case VECTOR_TYPE:
case COMPLEX_TYPE:
pp_c_brace_enclosed_initializer_list (pp, e);
break;
default:
pp_unsupported_tree (pp, e);
break;
}
}
/* constant:
integer-constant
floating-constant
enumeration-constant
character-constant */
void
pp_c_constant (c_pretty_printer *pp, tree e)
{
const enum tree_code code = TREE_CODE (e);
switch (code)
{
case INTEGER_CST:
{
tree type = TREE_TYPE (e);
if (type == boolean_type_node)
pp_c_bool_constant (pp, e);
else if (type == char_type_node)
pp_c_character_constant (pp, e);
else if (TREE_CODE (type) == ENUMERAL_TYPE
&& pp_c_enumeration_constant (pp, e))
;
else
pp_c_integer_constant (pp, e);
}
break;
case REAL_CST:
pp_c_floating_constant (pp, e);
break;
case STRING_CST:
pp_c_string_literal (pp, e);
break;
default:
pp_unsupported_tree (pp, e);
break;
}
}
void
pp_c_identifier (c_pretty_printer *pp, const char *id)
{
pp_c_maybe_whitespace (pp);
pp_identifier (pp, id);
pp_base (pp)->padding = pp_before;
}
/* Pretty-print a C primary-expression.
primary-expression:
identifier
constant
string-literal
( expression ) */
void
pp_c_primary_expression (c_pretty_printer *pp, tree e)
{
switch (TREE_CODE (e))
{
case VAR_DECL:
case PARM_DECL:
case FIELD_DECL:
case CONST_DECL:
case FUNCTION_DECL:
case LABEL_DECL:
e = DECL_NAME (e);
/* Fall through. */
case IDENTIFIER_NODE:
pp_c_tree_identifier (pp, e);
break;
case ERROR_MARK:
pp_c_identifier (pp, "<erroneous-expression>");
break;
case RESULT_DECL:
pp_c_identifier (pp, "<return-value>");
break;
case INTEGER_CST:
case REAL_CST:
case STRING_CST:
pp_c_constant (pp, e);
break;
case STMT_EXPR:
pp_c_left_paren (pp);
pp_statement (pp, STMT_EXPR_STMT (e));
pp_c_right_paren (pp);
break;
default:
/* FIXME: Make sure we won't get into an infinie loop. */
pp_c_left_paren (pp);
pp_expression (pp, e);
pp_c_right_paren (pp);
break;
}
}
/* Print out a C initializer -- also support C compound-literals.
initializer:
assignment-expression:
{ initializer-list }
{ initializer-list , } */
static void
pp_c_initializer (c_pretty_printer *pp, tree e)
{
if (TREE_CODE (e) == CONSTRUCTOR)
{
enum tree_code code = TREE_CODE (TREE_TYPE (e));
if (code == RECORD_TYPE || code == UNION_TYPE || code == ARRAY_TYPE)
pp_c_brace_enclosed_initializer_list (pp, e);
else
pp_unsupported_tree (pp, TREE_OPERAND (e, 1));
}
else
pp_expression (pp, e);
}
/* init-declarator:
declarator:
declarator = initializer */
void
pp_c_init_declarator (c_pretty_printer *pp, tree t)
{
pp_declarator (pp, t);
if (DECL_INITIAL (t))
{
tree init = DECL_INITIAL (t);
/* This C++ bit is handled here because it is easier to do so.
In templates, the C++ parser builds a TREE_LIST for a
direct-initialization; the TREE_PURPOSE is the variable to
initialize and the TREE_VALUE is the initializer. */
if (TREE_CODE (init) == TREE_LIST)
{
pp_c_left_paren (pp);
pp_expression (pp, TREE_VALUE (init));
pp_right_paren (pp);
}
else
{
pp_space (pp);
pp_equal (pp);
pp_space (pp);
pp_c_initializer (pp, init);
}
}
}
/* initializer-list:
designation(opt) initializer
initializer-list , designation(opt) initializer
designation:
designator-list =
designator-list:
designator
designator-list designator
designator:
[ constant-expression ]
identifier */
static void
pp_c_initializer_list (c_pretty_printer *pp, tree e)
{
tree type = TREE_TYPE (e);
const enum tree_code code = TREE_CODE (type);
switch (code)
{
case RECORD_TYPE:
case UNION_TYPE:
case ARRAY_TYPE:
{
tree init = TREE_OPERAND (e, 0);
for (; init != NULL_TREE; init = TREE_CHAIN (init))
{
if (code == RECORD_TYPE || code == UNION_TYPE)
{
pp_c_dot (pp);
pp_c_primary_expression (pp, TREE_PURPOSE (init));
}
else
{
pp_c_left_bracket (pp);
if (TREE_PURPOSE (init))
pp_c_constant (pp, TREE_PURPOSE (init));
pp_c_right_bracket (pp);
}
pp_c_whitespace (pp);
pp_equal (pp);
pp_c_whitespace (pp);
pp_initializer (pp, TREE_VALUE (init));
if (TREE_CHAIN (init))
pp_separate_with (pp, ',');
}
}
break;
case VECTOR_TYPE:
pp_c_expression_list (pp, TREE_VECTOR_CST_ELTS (e));
break;
case COMPLEX_TYPE:
{
const bool cst = TREE_CODE (e) == COMPLEX_CST;
pp_expression (pp, cst ? TREE_REALPART (e) : TREE_OPERAND (e, 0));
pp_separate_with (pp, ',');
pp_expression (pp, cst ? TREE_IMAGPART (e) : TREE_OPERAND (e, 1));
}
break;
default:
pp_unsupported_tree (pp, type);
break;
}
}
/* Pretty-print a brace-enclosed initializer-list. */
static void
pp_c_brace_enclosed_initializer_list (c_pretty_printer *pp, tree l)
{
pp_c_left_brace (pp);
pp_c_initializer_list (pp, l);
pp_c_right_brace (pp);
}
/* This is a convenient function, used to bridge gap between C and C++
grammars.
id-expression:
identifier */
void
pp_c_id_expression (c_pretty_printer *pp, tree t)
{
switch (TREE_CODE (t))
{
case VAR_DECL:
case PARM_DECL:
case CONST_DECL:
case TYPE_DECL:
case FUNCTION_DECL:
case FIELD_DECL:
case LABEL_DECL:
t = DECL_NAME (t);
case IDENTIFIER_NODE:
pp_c_tree_identifier (pp, t);
break;
default:
pp_unsupported_tree (pp, t);
break;
}
}
/* postfix-expression:
primary-expression
postfix-expression [ expression ]
postfix-expression ( argument-expression-list(opt) )
postfix-expression . identifier
postfix-expression -> identifier
postfix-expression ++
postfix-expression --
( type-name ) { initializer-list }
( type-name ) { initializer-list , } */
void
pp_c_postfix_expression (c_pretty_printer *pp, tree e)
{
enum tree_code code = TREE_CODE (e);
switch (code)
{
case POSTINCREMENT_EXPR:
case POSTDECREMENT_EXPR:
pp_postfix_expression (pp, TREE_OPERAND (e, 0));
pp_identifier (pp, code == POSTINCREMENT_EXPR ? "++" : "--");
break;
case ARROW_EXPR:
pp_postfix_expression (pp, TREE_OPERAND (e, 0));
pp_c_arrow (pp);
break;
case ARRAY_REF:
pp_postfix_expression (pp, TREE_OPERAND (e, 0));
pp_c_left_bracket (pp);
pp_expression (pp, TREE_OPERAND (e, 1));
pp_c_right_bracket (pp);
break;
case CALL_EXPR:
pp_postfix_expression (pp, TREE_OPERAND (e, 0));
pp_c_call_argument_list (pp, TREE_OPERAND (e, 1));
break;
case ABS_EXPR:
pp_c_identifier (pp, "__builtin_abs");
pp_c_left_paren (pp);
pp_expression (pp, TREE_OPERAND (e, 0));
pp_c_right_paren (pp);
break;
case COMPONENT_REF:
{
tree object = TREE_OPERAND (e, 0);
if (TREE_CODE (object) == INDIRECT_REF)
{
pp_postfix_expression (pp, TREE_OPERAND (object, 0));
pp_c_arrow (pp);
}
else
{
pp_postfix_expression (pp, object);
pp_c_dot (pp);
}
pp_expression (pp, TREE_OPERAND (e, 1));
}
break;
case COMPLEX_CST:
case VECTOR_CST:
case COMPLEX_EXPR:
pp_c_compound_literal (pp, e);
break;
case COMPOUND_LITERAL_EXPR:
e = DECL_INITIAL (COMPOUND_LITERAL_EXPR_DECL (e));
/* Fall through. */
case CONSTRUCTOR:
pp_initializer (pp, e);
break;
case VA_ARG_EXPR:
pp_c_identifier (pp, "__builtin_va_arg");
pp_c_left_paren (pp);
pp_assignment_expression (pp, TREE_OPERAND (e, 0));
pp_separate_with (pp, ',');
pp_type_id (pp, TREE_TYPE (e));
pp_c_right_paren (pp);
break;
case ADDR_EXPR:
if (TREE_CODE (TREE_OPERAND (e, 0)) == FUNCTION_DECL)
{
pp_c_id_expression (pp, TREE_OPERAND (e, 0));
break;
}
/* else fall through. */
default:
pp_primary_expression (pp, e);
break;
}
}
/* Print out an expression-list; E is expected to be a TREE_LIST. */
void
pp_c_expression_list (c_pretty_printer *pp, tree e)
{
for (; e != NULL_TREE; e = TREE_CHAIN (e))
{
pp_expression (pp, TREE_VALUE (e));
if (TREE_CHAIN (e))
pp_separate_with (pp, ',');
}
}
/* Print out an expression-list in parens, as in a function call. */
void
pp_c_call_argument_list (c_pretty_printer *pp, tree t)
{
pp_c_left_paren (pp);
if (t && TREE_CODE (t) == TREE_LIST)
pp_c_expression_list (pp, t);
pp_c_right_paren (pp);
}
/* unary-expression:
postfix-expression
++ cast-expression
-- cast-expression
unary-operator cast-expression
sizeof unary-expression
sizeof ( type-id )
unary-operator: one of
* & + - ! ~
GNU extensions.
unary-expression:
__alignof__ unary-expression
__alignof__ ( type-id )
__real__ unary-expression
__imag__ unary-expression */
void
pp_c_unary_expression (c_pretty_printer *pp, tree e)
{
enum tree_code code = TREE_CODE (e);
switch (code)
{
case PREINCREMENT_EXPR:
case PREDECREMENT_EXPR:
pp_identifier (pp, code == PREINCREMENT_EXPR ? "++" : "--");
pp_c_unary_expression (pp, TREE_OPERAND (e, 0));
break;
case ADDR_EXPR:
case INDIRECT_REF:
case NEGATE_EXPR:
case BIT_NOT_EXPR:
case TRUTH_NOT_EXPR:
case CONJ_EXPR:
/* String literal are used by address. */
if (code == ADDR_EXPR && TREE_CODE (TREE_OPERAND (e, 0)) != STRING_CST)
pp_ampersand (pp);
else if (code == INDIRECT_REF)
pp_c_star (pp);
else if (code == NEGATE_EXPR)
pp_minus (pp);
else if (code == BIT_NOT_EXPR || code == CONJ_EXPR)
pp_complement (pp);
else if (code == TRUTH_NOT_EXPR)
pp_exclamation (pp);
pp_c_cast_expression (pp, TREE_OPERAND (e, 0));
break;
case SIZEOF_EXPR:
case ALIGNOF_EXPR:
pp_c_identifier (pp, code == SIZEOF_EXPR ? "sizeof" : "__alignof__");
pp_c_whitespace (pp);
if (TYPE_P (TREE_OPERAND (e, 0)))
pp_c_type_cast (pp, TREE_OPERAND (e, 0));
else
pp_unary_expression (pp, TREE_OPERAND (e, 0));
break;
case REALPART_EXPR:
case IMAGPART_EXPR:
pp_c_identifier (pp, code == REALPART_EXPR ? "__real__" : "__imag__");
pp_c_whitespace (pp);
pp_unary_expression (pp, TREE_OPERAND (e, 0));
break;
default:
pp_postfix_expression (pp, e);
break;
}
}
/* cast-expression:
unary-expression
( type-name ) cast-expression */
void
pp_c_cast_expression (c_pretty_printer *pp, tree e)
{
switch (TREE_CODE (e))
{
case FLOAT_EXPR:
case FIX_TRUNC_EXPR:
case CONVERT_EXPR:
pp_c_type_cast (pp, TREE_TYPE (e));
pp_c_cast_expression (pp, TREE_OPERAND (e, 0));
break;
default:
pp_unary_expression (pp, e);
}
}
/* multiplicative-expression:
cast-expression
multiplicative-expression * cast-expression
multiplicative-expression / cast-expression
multiplicative-expression % cast-expression */
static void
pp_c_multiplicative_expression (c_pretty_printer *pp, tree e)
{
enum tree_code code = TREE_CODE (e);
switch (code)
{
case MULT_EXPR:
case TRUNC_DIV_EXPR:
case TRUNC_MOD_EXPR:
pp_multiplicative_expression (pp, TREE_OPERAND (e, 0));
pp_c_whitespace (pp);
if (code == MULT_EXPR)
pp_c_star (pp);
else if (code == TRUNC_DIV_EXPR)
pp_slash (pp);
else
pp_modulo (pp);
pp_c_whitespace (pp);
pp_c_cast_expression (pp, TREE_OPERAND (e, 1));
break;
default:
pp_c_cast_expression (pp, e);
break;
}
}
/* additive-expression:
multiplicative-expression
additive-expression + multiplicative-expression
additive-expression - multiplicative-expression */
static void
pp_c_additive_expression (c_pretty_printer *pp, tree e)
{
enum tree_code code = TREE_CODE (e);
switch (code)
{
case PLUS_EXPR:
case MINUS_EXPR:
pp_c_additive_expression (pp, TREE_OPERAND (e, 0));
pp_c_whitespace (pp);
if (code == PLUS_EXPR)
pp_plus (pp);
else
pp_minus (pp);
pp_c_whitespace (pp);
pp_multiplicative_expression (pp, TREE_OPERAND (e, 1));
break;
default:
pp_multiplicative_expression (pp, e);
break;
}
}
/* additive-expression:
additive-expression
shift-expression << additive-expression
shift-expression >> additive-expression */
static void
pp_c_shift_expression (c_pretty_printer *pp, tree e)
{
enum tree_code code = TREE_CODE (e);
switch (code)
{
case LSHIFT_EXPR:
case RSHIFT_EXPR:
pp_c_shift_expression (pp, TREE_OPERAND (e, 0));
pp_c_whitespace (pp);
pp_identifier (pp, code == LSHIFT_EXPR ? "<<" : ">>");
pp_c_whitespace (pp);
pp_c_additive_expression (pp, TREE_OPERAND (e, 1));
break;
default:
pp_c_additive_expression (pp, e);
}
}
/* relational-expression:
shift-expression
relational-expression < shift-expression
relational-expression > shift-expression
relational-expression <= shift-expression
relational-expression >= shift-expression */
static void
pp_c_relational_expression (c_pretty_printer *pp, tree e)
{
enum tree_code code = TREE_CODE (e);
switch (code)
{
case LT_EXPR:
case GT_EXPR:
case LE_EXPR:
case GE_EXPR:
pp_c_relational_expression (pp, TREE_OPERAND (e, 0));
pp_c_whitespace (pp);
if (code == LT_EXPR)
pp_less (pp);
else if (code == GT_EXPR)
pp_greater (pp);
else if (code == LE_EXPR)
pp_identifier (pp, "<=");
else if (code == GE_EXPR)
pp_identifier (pp, ">=");
pp_c_whitespace (pp);
pp_c_shift_expression (pp, TREE_OPERAND (e, 1));
break;
default:
pp_c_shift_expression (pp, e);
break;
}
}
/* equality-expression:
relational-expression
equality-expression == relational-expression
equality-equality != relational-expression */
static void
pp_c_equality_expression (c_pretty_printer *pp, tree e)
{
enum tree_code code = TREE_CODE (e);
switch (code)
{
case EQ_EXPR:
case NE_EXPR:
pp_c_equality_expression (pp, TREE_OPERAND (e, 0));
pp_c_whitespace (pp);
pp_identifier (pp, code == EQ_EXPR ? "==" : "!=");
pp_c_whitespace (pp);
pp_c_relational_expression (pp, TREE_OPERAND (e, 1));
break;
default:
pp_c_relational_expression (pp, e);
break;
}
}
/* AND-expression:
equality-expression
AND-expression & equality-equality */
static void
pp_c_and_expression (c_pretty_printer *pp, tree e)
{
if (TREE_CODE (e) == BIT_AND_EXPR)
{
pp_c_and_expression (pp, TREE_OPERAND (e, 0));
pp_c_whitespace (pp);
pp_ampersand (pp);
pp_c_whitespace (pp);
pp_c_equality_expression (pp, TREE_OPERAND (e, 1));
}
else
pp_c_equality_expression (pp, e);
}
/* exclusive-OR-expression:
AND-expression
exclusive-OR-expression ^ AND-expression */
static void
pp_c_exclusive_or_expression (c_pretty_printer *pp, tree e)
{
if (TREE_CODE (e) == BIT_XOR_EXPR)
{
pp_c_exclusive_or_expression (pp, TREE_OPERAND (e, 0));
pp_c_maybe_whitespace (pp);
pp_carret (pp);
pp_c_whitespace (pp);
pp_c_and_expression (pp, TREE_OPERAND (e, 1));
}
else
pp_c_and_expression (pp, e);
}
/* inclusive-OR-expression:
exclusive-OR-expression
inclusive-OR-expression | exclusive-OR-expression */
static void
pp_c_inclusive_or_expression (c_pretty_printer *pp, tree e)
{
if (TREE_CODE (e) == BIT_IOR_EXPR)
{
pp_c_exclusive_or_expression (pp, TREE_OPERAND (e, 0));
pp_c_whitespace (pp);
pp_bar (pp);
pp_c_whitespace (pp);
pp_c_exclusive_or_expression (pp, TREE_OPERAND (e, 1));
}
else
pp_c_exclusive_or_expression (pp, e);
}
/* logical-AND-expression:
inclusive-OR-expression
logical-AND-expression && inclusive-OR-expression */
static void
pp_c_logical_and_expression (c_pretty_printer *pp, tree e)
{
if (TREE_CODE (e) == TRUTH_ANDIF_EXPR)
{
pp_c_logical_and_expression (pp, TREE_OPERAND (e, 0));
pp_c_whitespace (pp);
pp_identifier (pp, "&&");
pp_c_whitespace (pp);
pp_c_inclusive_or_expression (pp, TREE_OPERAND (e, 1));
}
else
pp_c_inclusive_or_expression (pp, e);
}
/* logical-OR-expression:
logical-AND-expression
logical-OR-expression || logical-AND-expression */
void
pp_c_logical_or_expression (c_pretty_printer *pp, tree e)
{
if (TREE_CODE (e) == TRUTH_ORIF_EXPR)
{
pp_c_logical_or_expression (pp, TREE_OPERAND (e, 0));
pp_c_whitespace (pp);
pp_identifier (pp, "||");
pp_c_whitespace (pp);
pp_c_logical_and_expression (pp, TREE_OPERAND (e, 1));
}
else
pp_c_logical_and_expression (pp, e);
}
/* conditional-expression:
logical-OR-expression
logical-OR-expression ? expression : conditional-expression */
static void
pp_c_conditional_expression (c_pretty_printer *pp, tree e)
{
if (TREE_CODE (e) == COND_EXPR)
{
pp_c_logical_or_expression (pp, TREE_OPERAND (e, 0));
pp_c_whitespace (pp);
pp_question (pp);
pp_c_whitespace (pp);
pp_expression (pp, TREE_OPERAND (e, 1));
pp_c_whitespace (pp);
pp_colon (pp);
pp_c_whitespace (pp);
pp_c_conditional_expression (pp, TREE_OPERAND (e, 2));
}
else
pp_c_logical_or_expression (pp, e);
}
/* assignment-expression:
conditional-expression
unary-expression assignment-operator assignment-expression
assignment-expression: one of
= *= /= %= += -= >>= <<= &= ^= |= */
static void
pp_c_assignment_expression (c_pretty_printer *pp, tree e)
{
if (TREE_CODE (e) == MODIFY_EXPR || TREE_CODE (e) == INIT_EXPR)
{
pp_c_unary_expression (pp, TREE_OPERAND (e, 0));
pp_c_whitespace (pp);
pp_equal (pp);
pp_space (pp);
pp_c_expression (pp, TREE_OPERAND (e, 1));
}
else
pp_c_conditional_expression (pp, e);
}
/* expression:
assignment-expression
expression , assignment-expression
Implementation note: instead of going through the usual recursion
chain, I take the liberty of dispatching nodes to the appropriate
functions. This makes some redundancy, but it worths it. That also
prevents a possible infinite recursion between pp_c_primary_expression ()
and pp_c_expression (). */
void
pp_c_expression (c_pretty_printer *pp, tree e)
{
switch (TREE_CODE (e))
{
case INTEGER_CST:
pp_c_integer_constant (pp, e);
break;
case REAL_CST:
pp_c_floating_constant (pp, e);
break;
case STRING_CST:
pp_c_string_literal (pp, e);
break;
case IDENTIFIER_NODE:
case FUNCTION_DECL:
case VAR_DECL:
case CONST_DECL:
case PARM_DECL:
case RESULT_DECL:
case FIELD_DECL:
case LABEL_DECL:
case ERROR_MARK:
case STMT_EXPR:
pp_primary_expression (pp, e);
break;
case POSTINCREMENT_EXPR:
case POSTDECREMENT_EXPR:
case ARROW_EXPR:
case ARRAY_REF:
case CALL_EXPR:
case COMPONENT_REF:
case COMPLEX_CST:
case COMPLEX_EXPR:
case VECTOR_CST:
case ABS_EXPR:
case CONSTRUCTOR:
case COMPOUND_LITERAL_EXPR:
case VA_ARG_EXPR:
pp_postfix_expression (pp, e);
break;
case CONJ_EXPR:
case ADDR_EXPR:
case INDIRECT_REF:
case NEGATE_EXPR:
case BIT_NOT_EXPR:
case TRUTH_NOT_EXPR:
case PREINCREMENT_EXPR:
case PREDECREMENT_EXPR:
case SIZEOF_EXPR:
case ALIGNOF_EXPR:
case REALPART_EXPR:
case IMAGPART_EXPR:
pp_c_unary_expression (pp, e);
break;
case FLOAT_EXPR:
case FIX_TRUNC_EXPR:
case CONVERT_EXPR:
pp_c_cast_expression (pp, e);
break;
case MULT_EXPR:
case TRUNC_MOD_EXPR:
case TRUNC_DIV_EXPR:
pp_multiplicative_expression (pp, e);
break;
case LSHIFT_EXPR:
case RSHIFT_EXPR:
pp_c_shift_expression (pp, e);
break;
case LT_EXPR:
case GT_EXPR:
case LE_EXPR:
case GE_EXPR:
pp_c_relational_expression (pp, e);
break;
case BIT_AND_EXPR:
pp_c_and_expression (pp, e);
break;
case BIT_XOR_EXPR:
pp_c_exclusive_or_expression (pp, e);
break;
case BIT_IOR_EXPR:
pp_c_inclusive_or_expression (pp, e);
break;
case TRUTH_ANDIF_EXPR:
pp_c_logical_and_expression (pp, e);
break;
case TRUTH_ORIF_EXPR:
pp_c_logical_or_expression (pp, e);
break;
case EQ_EXPR:
case NE_EXPR:
pp_c_equality_expression (pp, e);
break;
case COND_EXPR:
pp_conditional_expression (pp, e);
break;
case PLUS_EXPR:
case MINUS_EXPR:
pp_c_additive_expression (pp, e);
break;
case MODIFY_EXPR:
case INIT_EXPR:
pp_assignment_expression (pp, e);
break;
case COMPOUND_EXPR:
pp_c_left_paren (pp);
pp_expression (pp, TREE_OPERAND (e, 0));
pp_separate_with (pp, ',');
pp_assignment_expression (pp, TREE_OPERAND (e, 1));
pp_c_right_paren (pp);
break;
case NOP_EXPR:
case NON_LVALUE_EXPR:
case SAVE_EXPR:
case UNSAVE_EXPR:
pp_expression (pp, TREE_OPERAND (e, 0));
break;
case TARGET_EXPR:
pp_postfix_expression (pp, TREE_OPERAND (e, 1));
break;
default:
pp_unsupported_tree (pp, e);
break;
}
}
/* Statements. */
/* statement:
labeled-statement
compound-statement
expression-statement
selection-statement
iteration-statement
jump-statement */
void
pp_c_statement (c_pretty_printer *pp, tree stmt)
{
enum tree_code code;
if (stmt == NULL)
return;
code = TREE_CODE (stmt);
switch (code)
{
/* labeled-statement:
identifier : statement
case constant-expression : statement
default : statement */
case LABEL_STMT:
case CASE_LABEL:
if (pp_needs_newline (pp))
pp_newline_and_indent (pp, -3);
else
pp_indentation (pp) -= 3;
if (code == LABEL_STMT)
pp_tree_identifier (pp, DECL_NAME (LABEL_STMT_LABEL (stmt)));
else if (code == CASE_LABEL)
{
if (CASE_LOW (stmt) == NULL_TREE)
pp_identifier (pp, "default");
else
{
pp_c_identifier (pp, "case");
pp_c_whitespace (pp);
pp_conditional_expression (pp, CASE_LOW (stmt));
if (CASE_HIGH (stmt))
{
pp_identifier (pp, "...");
pp_conditional_expression (pp, CASE_HIGH (stmt));
}
}
}
pp_colon (pp);
pp_indentation (pp) += 3;
pp_needs_newline (pp) = true;
break;
/* compound-statement:
{ block-item-list(opt) }
block-item-list:
block-item
block-item-list block-item
block-item:
declaration
statement */
case COMPOUND_STMT:
if (pp_needs_newline (pp))
pp_newline_and_indent (pp, 0);
pp_c_left_brace (pp);
pp_newline_and_indent (pp, 3);
for (stmt = COMPOUND_BODY (stmt); stmt; stmt = TREE_CHAIN (stmt))
pp_statement (pp, stmt);
pp_newline_and_indent (pp, -3);
pp_c_right_brace (pp);
pp_needs_newline (pp) = true;
break;
/* expression-statement:
expression(opt) ; */
case EXPR_STMT:
case CLEANUP_STMT:
if (pp_needs_newline (pp))
pp_newline_and_indent (pp, 0);
{
tree e = code == EXPR_STMT
? EXPR_STMT_EXPR (stmt)
: CLEANUP_EXPR (stmt);
if (e)
pp_expression (pp, e);
}
pp_c_semicolon (pp);
pp_needs_newline (pp) = true;
break;
/* selection-statement:
if ( expression ) statement
if ( expression ) statement else statement
switch ( expression ) statement */
case IF_STMT:
if (pp_needs_newline (pp))
pp_newline_and_indent (pp, 0);
pp_c_identifier (pp, "if");
pp_c_whitespace (pp);
pp_c_left_paren (pp);
pp_expression (pp, IF_COND (stmt));
pp_c_right_paren (pp);
pp_newline_and_indent (pp, 3);
pp_statement (pp, THEN_CLAUSE (stmt));
pp_newline_and_indent (pp, -3);
if (ELSE_CLAUSE (stmt))
{
tree else_clause = ELSE_CLAUSE (stmt);
pp_c_identifier (pp, "else");
if (TREE_CODE (else_clause) == IF_STMT)
pp_c_whitespace (pp);
else
pp_newline_and_indent (pp, 3);
pp_statement (pp, else_clause);
if (TREE_CODE (else_clause) != IF_STMT)
pp_newline_and_indent (pp, -3);
}
break;
case SWITCH_STMT:
if (pp_needs_newline (pp))
pp_newline_and_indent (pp, 0);
pp_c_identifier (pp, "switch");
pp_space (pp);
pp_c_left_paren (pp);
pp_expression (pp, SWITCH_COND (stmt));
pp_c_right_paren (pp);
pp_indentation (pp) += 3;
pp_needs_newline (pp) = true;
pp_statement (pp, SWITCH_BODY (stmt));
pp_newline_and_indent (pp, -3);
break;
/* iteration-statement:
while ( expression ) statement
do statement while ( expression ) ;
for ( expression(opt) ; expression(opt) ; expression(opt) ) statement
for ( declaration expression(opt) ; expression(opt) ) statement */
case WHILE_STMT:
if (pp_needs_newline (pp))
pp_newline_and_indent (pp, 0);
pp_c_identifier (pp, "while");
pp_space (pp);
pp_c_left_paren (pp);
pp_expression (pp, WHILE_COND (stmt));
pp_c_right_paren (pp);
pp_newline_and_indent (pp, 3);
pp_statement (pp, WHILE_BODY (stmt));
pp_indentation (pp) -= 3;
pp_needs_newline (pp) = true;
break;
case DO_STMT:
if (pp_needs_newline (pp))
pp_newline_and_indent (pp, 0);
pp_c_identifier (pp, "do");
pp_newline_and_indent (pp, 3);
pp_statement (pp, DO_BODY (stmt));
pp_newline_and_indent (pp, -3);
pp_c_identifier (pp, "while");
pp_space (pp);
pp_c_left_paren (pp);
pp_expression (pp, DO_COND (stmt));
pp_c_right_paren (pp);
pp_c_semicolon (pp);
pp_needs_newline (pp) = true;
break;
case FOR_STMT:
if (pp_needs_newline (pp))
pp_newline_and_indent (pp, 0);
pp_c_identifier (pp, "for");
pp_space (pp);
pp_c_left_paren (pp);
if (FOR_INIT_STMT (stmt))
pp_statement (pp, FOR_INIT_STMT (stmt));
else
pp_c_semicolon (pp);
pp_needs_newline (pp) = false;
pp_c_whitespace (pp);
if (FOR_COND (stmt))
pp_expression (pp, FOR_COND (stmt));
pp_c_semicolon (pp);
pp_needs_newline (pp) = false;
pp_c_whitespace (pp);
if (FOR_EXPR (stmt))
pp_expression (pp, FOR_EXPR (stmt));
pp_c_right_paren (pp);
pp_newline_and_indent (pp, 3);
pp_statement (pp, FOR_BODY (stmt));
pp_indentation (pp) -= 3;
pp_needs_newline (pp) = true;
break;
/* jump-statement:
goto identifier;
continue ;
return expression(opt) ; */
case BREAK_STMT:
case CONTINUE_STMT:
if (pp_needs_newline (pp))
pp_newline_and_indent (pp, 0);
pp_identifier (pp, code == BREAK_STMT ? "break" : "continue");
pp_c_semicolon (pp);
pp_needs_newline (pp) = true;
break;
case RETURN_STMT:
case GOTO_STMT:
{
tree e = code == RETURN_STMT
? RETURN_STMT_EXPR (stmt)
: GOTO_DESTINATION (stmt);
if (pp_needs_newline (pp))
pp_newline_and_indent (pp, 0);
pp_c_identifier (pp, code == RETURN_STMT ? "return" : "goto");
pp_c_whitespace (pp);
if (e)
{
if (TREE_CODE (e) == INIT_EXPR
&& TREE_CODE (TREE_OPERAND (e, 0)) == RESULT_DECL)
e = TREE_OPERAND (e, 1);
pp_expression (pp, e);
}
pp_c_semicolon (pp);
pp_needs_newline (pp) = true;
}
break;
case SCOPE_STMT:
if (!SCOPE_NULLIFIED_P (stmt) && SCOPE_NO_CLEANUPS_P (stmt))
{
int i = 0;
if (pp_needs_newline (pp))
pp_newline_and_indent (pp, 0);
if (SCOPE_BEGIN_P (stmt))
{
pp_left_brace (pp);
i = 3;
}
else if (SCOPE_END_P (stmt))
{
pp_right_brace (pp);
i = -3;
}
pp_indentation (pp) += i;
pp_needs_newline (pp) = true;
}
break;
case DECL_STMT:
if (pp_needs_newline (pp))
pp_newline_and_indent (pp, 0);
pp_declaration (pp, DECL_STMT_DECL (stmt));
pp_needs_newline (pp) = true;
break;
case ASM_STMT:
{
bool has_volatile_p = ASM_VOLATILE_P (stmt);
bool is_extended = has_volatile_p || ASM_INPUTS (stmt)
|| ASM_OUTPUTS (stmt) || ASM_CLOBBERS (stmt);
pp_c_identifier (pp, is_extended ? "__asm__" : "asm");
if (has_volatile_p)
pp_c_identifier (pp, "__volatile__");
pp_space (pp);
pp_c_left_paren (pp);
pp_c_string_literal (pp, ASM_STRING (stmt));
if (is_extended)
{
pp_space (pp);
pp_separate_with (pp, ':');
if (ASM_OUTPUTS (stmt))
pp_expression (pp, ASM_OUTPUTS (stmt));
pp_space (pp);
pp_separate_with (pp, ':');
if (ASM_INPUTS (stmt))
pp_expression (pp, ASM_INPUTS (stmt));
pp_space (pp);
pp_separate_with (pp, ':');
if (ASM_CLOBBERS (stmt))
pp_expression (pp, ASM_CLOBBERS (stmt));
}
pp_c_right_paren (pp);
pp_newline (pp);
}
break;
case FILE_STMT:
pp_c_identifier (pp, "__FILE__");
pp_space (pp);
pp_equal (pp);
pp_c_whitespace (pp);
pp_c_identifier (pp, FILE_STMT_FILENAME (stmt));
pp_c_semicolon (pp);
pp_needs_newline (pp) = true;
break;
default:
pp_unsupported_tree (pp, stmt);
}
}
/* Initialize the PRETTY-PRINTER for handling C codes. */
void
pp_c_pretty_printer_init (c_pretty_printer *pp)
{
pp->offset_list = 0;
pp->declaration = pp_c_declaration;
pp->declaration_specifiers = pp_c_declaration_specifiers;
pp->declarator = pp_c_declarator;
pp->direct_declarator = pp_c_direct_declarator;
pp->type_specifier_seq = pp_c_specifier_qualifier_list;
pp->abstract_declarator = pp_c_abstract_declarator;
pp->direct_abstract_declarator = pp_c_direct_abstract_declarator;
pp->ptr_operator = pp_c_pointer;
pp->parameter_list = pp_c_parameter_type_list;
pp->type_id = pp_c_type_id;
pp->simple_type_specifier = pp_c_type_specifier;
pp->function_specifier = pp_c_function_specifier;
pp->storage_class_specifier = pp_c_storage_class_specifier;
pp->statement = pp_c_statement;
pp->id_expression = pp_c_id_expression;
pp->primary_expression = pp_c_primary_expression;
pp->postfix_expression = pp_c_postfix_expression;
pp->unary_expression = pp_c_unary_expression;
pp->initializer = pp_c_initializer;
pp->multiplicative_expression = pp_c_multiplicative_expression;
pp->conditional_expression = pp_c_conditional_expression;
pp->assignment_expression = pp_c_assignment_expression;
pp->expression = pp_c_expression;
}