forked from illumos/gcc
/
c-pretty-print.c
2158 lines (1890 loc) · 52.6 KB
/
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