+/*
+ * This file is part of cparser.
+ * Copyright (C) 2007-2008 Matthias Braun <matze@braunis.de>
+ *
+ * This program 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
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
#include <config.h>
#include "ast_t.h"
+#include "symbol_t.h"
#include "type_t.h"
+#include "parser.h"
+#include "lang_features.h"
+#include "entity_t.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
+#if defined(__INTEL_COMPILER)
+#include <mathimf.h>
+#elif defined(__CYGWIN__)
+#include "win32/cygwin_math_ext.h"
+#else
+#include <math.h>
+#endif
+
#include "adt/error.h"
+#include "adt/util.h"
struct obstack ast_obstack;
static FILE *out;
static int indent;
+/** If set, implicit casts are printed. */
+bool print_implicit_casts = false;
+
+/** If set parenthesis are printed to indicate operator precedence. */
+bool print_parenthesis = false;
+
static void print_statement(const statement_t *statement);
-static void print_declaration(const declaration_t *declaration);
+static void print_expression_prec(const expression_t *expression, unsigned prec);
-static void print_indent(void)
+void change_indent(int delta)
{
- for(int i = 0; i < indent; ++i)
- fprintf(out, "\t");
+ indent += delta;
+ assert(indent >= 0);
}
-static void print_const(const const_t *cnst)
+void print_indent(void)
{
- if(cnst->expression.datatype == NULL)
+ for (int i = 0; i < indent; ++i)
+ fputc('\t', out);
+}
+
+/**
+ * Returns 1 if a given precedence level has right-to-left
+ * associativity, else 0.
+ *
+ * @param precedence the operator precedence
+ */
+static int right_to_left(unsigned precedence)
+{
+ switch (precedence) {
+ case PREC_ASSIGNMENT:
+ case PREC_CONDITIONAL:
+ case PREC_UNARY:
+ return 1;
+
+ default:
+ return 0;
+ }
+}
+
+/**
+ * Return the precedence of an expression given by its kind.
+ *
+ * @param kind the expression kind
+ */
+static unsigned get_expression_precedence(expression_kind_t kind)
+{
+ static const unsigned prec[] = {
+ [EXPR_UNKNOWN] = PREC_PRIMARY,
+ [EXPR_INVALID] = PREC_PRIMARY,
+ [EXPR_REFERENCE] = PREC_PRIMARY,
+ [EXPR_REFERENCE_ENUM_VALUE] = PREC_PRIMARY,
+ [EXPR_CHARACTER_CONSTANT] = PREC_PRIMARY,
+ [EXPR_WIDE_CHARACTER_CONSTANT] = PREC_PRIMARY,
+ [EXPR_CONST] = PREC_PRIMARY,
+ [EXPR_STRING_LITERAL] = PREC_PRIMARY,
+ [EXPR_WIDE_STRING_LITERAL] = PREC_PRIMARY,
+ [EXPR_COMPOUND_LITERAL] = PREC_UNARY,
+ [EXPR_CALL] = PREC_POSTFIX,
+ [EXPR_CONDITIONAL] = PREC_CONDITIONAL,
+ [EXPR_SELECT] = PREC_POSTFIX,
+ [EXPR_ARRAY_ACCESS] = PREC_POSTFIX,
+ [EXPR_SIZEOF] = PREC_UNARY,
+ [EXPR_CLASSIFY_TYPE] = PREC_UNARY,
+ [EXPR_ALIGNOF] = PREC_UNARY,
+
+ [EXPR_FUNCNAME] = PREC_PRIMARY,
+ [EXPR_BUILTIN_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_STATEMENT] = PREC_PRIMARY,
+ [EXPR_LABEL_ADDRESS] = PREC_PRIMARY,
+
+ [EXPR_UNARY_NEGATE] = PREC_UNARY,
+ [EXPR_UNARY_PLUS] = PREC_UNARY,
+ [EXPR_UNARY_BITWISE_NEGATE] = PREC_UNARY,
+ [EXPR_UNARY_NOT] = PREC_UNARY,
+ [EXPR_UNARY_DEREFERENCE] = PREC_UNARY,
+ [EXPR_UNARY_TAKE_ADDRESS] = PREC_UNARY,
+ [EXPR_UNARY_POSTFIX_INCREMENT] = PREC_POSTFIX,
+ [EXPR_UNARY_POSTFIX_DECREMENT] = PREC_POSTFIX,
+ [EXPR_UNARY_PREFIX_INCREMENT] = PREC_UNARY,
+ [EXPR_UNARY_PREFIX_DECREMENT] = PREC_UNARY,
+ [EXPR_UNARY_CAST] = PREC_UNARY,
+ [EXPR_UNARY_CAST_IMPLICIT] = PREC_UNARY,
+ [EXPR_UNARY_ASSUME] = PREC_PRIMARY,
+ [EXPR_UNARY_DELETE] = PREC_UNARY,
+ [EXPR_UNARY_DELETE_ARRAY] = PREC_UNARY,
+ [EXPR_UNARY_THROW] = PREC_ASSIGNMENT,
+
+ [EXPR_BINARY_ADD] = PREC_ADDITIVE,
+ [EXPR_BINARY_SUB] = PREC_ADDITIVE,
+ [EXPR_BINARY_MUL] = PREC_MULTIPLICATIVE,
+ [EXPR_BINARY_DIV] = PREC_MULTIPLICATIVE,
+ [EXPR_BINARY_MOD] = PREC_MULTIPLICATIVE,
+ [EXPR_BINARY_EQUAL] = PREC_EQUALITY,
+ [EXPR_BINARY_NOTEQUAL] = PREC_EQUALITY,
+ [EXPR_BINARY_LESS] = PREC_RELATIONAL,
+ [EXPR_BINARY_LESSEQUAL] = PREC_RELATIONAL,
+ [EXPR_BINARY_GREATER] = PREC_RELATIONAL,
+ [EXPR_BINARY_GREATEREQUAL] = PREC_RELATIONAL,
+ [EXPR_BINARY_BITWISE_AND] = PREC_AND,
+ [EXPR_BINARY_BITWISE_OR] = PREC_OR,
+ [EXPR_BINARY_BITWISE_XOR] = PREC_XOR,
+ [EXPR_BINARY_LOGICAL_AND] = PREC_LOGICAL_AND,
+ [EXPR_BINARY_LOGICAL_OR] = PREC_LOGICAL_OR,
+ [EXPR_BINARY_SHIFTLEFT] = PREC_SHIFT,
+ [EXPR_BINARY_SHIFTRIGHT] = PREC_SHIFT,
+ [EXPR_BINARY_ASSIGN] = PREC_ASSIGNMENT,
+ [EXPR_BINARY_MUL_ASSIGN] = PREC_ASSIGNMENT,
+ [EXPR_BINARY_DIV_ASSIGN] = PREC_ASSIGNMENT,
+ [EXPR_BINARY_MOD_ASSIGN] = PREC_ASSIGNMENT,
+ [EXPR_BINARY_ADD_ASSIGN] = PREC_ASSIGNMENT,
+ [EXPR_BINARY_SUB_ASSIGN] = PREC_ASSIGNMENT,
+ [EXPR_BINARY_SHIFTLEFT_ASSIGN] = PREC_ASSIGNMENT,
+ [EXPR_BINARY_SHIFTRIGHT_ASSIGN] = PREC_ASSIGNMENT,
+ [EXPR_BINARY_BITWISE_AND_ASSIGN] = PREC_ASSIGNMENT,
+ [EXPR_BINARY_BITWISE_XOR_ASSIGN] = PREC_ASSIGNMENT,
+ [EXPR_BINARY_BITWISE_OR_ASSIGN] = PREC_ASSIGNMENT,
+ [EXPR_BINARY_COMMA] = PREC_EXPRESSION,
+
+ [EXPR_BINARY_ISGREATER] = PREC_PRIMARY,
+ [EXPR_BINARY_ISGREATEREQUAL] = PREC_PRIMARY,
+ [EXPR_BINARY_ISLESS] = PREC_PRIMARY,
+ [EXPR_BINARY_ISLESSEQUAL] = PREC_PRIMARY,
+ [EXPR_BINARY_ISLESSGREATER] = PREC_PRIMARY,
+ [EXPR_BINARY_ISUNORDERED] = PREC_PRIMARY
+ };
+ assert((size_t)kind < lengthof(prec));
+ unsigned res = prec[kind];
+
+ assert(res != PREC_BOTTOM);
+ return res;
+}
+
+/**
+ * Print a constant expression.
+ *
+ * @param cnst the constant expression
+ */
+static void print_const(const const_expression_t *cnst)
+{
+ if (cnst->base.type == NULL)
return;
- if(is_type_integer(cnst->expression.datatype)) {
- fprintf(out, "%d", cnst->v.int_value);
- } else if(is_type_floating(cnst->expression.datatype)) {
- fprintf(out, "%Lf", cnst->v.float_value);
+ const type_t *const type = skip_typeref(cnst->base.type);
+
+ if (is_type_atomic(type, ATOMIC_TYPE_BOOL)) {
+ fputs(cnst->v.int_value ? "true" : "false", out);
+ } else if (is_type_integer(type)) {
+ fprintf(out, "%lld", cnst->v.int_value);
+ } else if (is_type_float(type)) {
+ long double const val = cnst->v.float_value;
+#ifdef _WIN32
+ /* ARG, no way to print long double */
+ fprintf(out, "%.20g", (double)val);
+#else
+ fprintf(out, "%.20Lg", val);
+#endif
+ if (isfinite(val) && truncl(val) == val)
+ fputs(".0", out);
+ } else {
+ panic("unknown constant");
+ }
+
+ char const* suffix;
+ switch (type->atomic.akind) {
+ case ATOMIC_TYPE_UINT: suffix = "U"; break;
+ case ATOMIC_TYPE_LONG: suffix = "L"; break;
+ case ATOMIC_TYPE_ULONG: suffix = "UL"; break;
+ case ATOMIC_TYPE_LONGLONG: suffix = "LL"; break;
+ case ATOMIC_TYPE_ULONGLONG: suffix = "ULL"; break;
+ case ATOMIC_TYPE_FLOAT: suffix = "F"; break;
+ case ATOMIC_TYPE_LONG_DOUBLE: suffix = "L"; break;
+
+ default: return;
}
+ fputs(suffix, out);
}
-static void print_string_literal(const string_literal_t *string_literal)
+/**
+ * Print a quoted string constant.
+ *
+ * @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)
{
- fputc('"', out);
- for(const char *c = string_literal->value; *c != '\0'; ++c) {
- switch(*c) {
- case '\"': fputs("\\\"", out); break;
+ fputc(border, out);
+ const char *end = string->begin + string->size - skip;
+ for (const char *c = string->begin; c != end; ++c) {
+ unsigned char const tc = *c;
+ if (tc == border) {
+ fputc('\\', out);
+ }
+ switch (tc) {
case '\\': fputs("\\\\", out); break;
case '\a': fputs("\\a", out); break;
case '\b': fputs("\\b", out); break;
case '\t': fputs("\\t", out); break;
case '\v': fputs("\\v", out); break;
case '\?': fputs("\\?", out); break;
+ case 27:
+ if (c_mode & _GNUC) {
+ fputs("\\e", out); break;
+ }
+ /* FALLTHROUGH */
default:
- if(!isprint(*c)) {
- fprintf(out, "\\x%x", *c);
- break;
+ if (tc < 0x80 && !isprint(tc)) {
+ fprintf(out, "\\%03o", (unsigned)tc);
+ } else {
+ fputc(tc, out);
}
- fputc(*c, out);
break;
}
}
- fputc('"', out);
+ fputc(border, out);
+}
+
+/**
+ * Prints a wide string literal expression.
+ *
+ * @param wstr the wide string literal expression
+ * @param border the border char
+ * @param skip number of chars to skip at the end
+ */
+static void print_quoted_wide_string(const wide_string_t *const wstr,
+ char border, int skip)
+{
+ fputc('L', out);
+ fputc(border, out);
+ const wchar_rep_t *end = wstr->begin + wstr->size - skip;
+ for (const wchar_rep_t *c = wstr->begin; c != end; ++c) {
+ switch (*c) {
+ case L'\"': fputs("\\\"", out); break;
+ case L'\\': fputs("\\\\", out); break;
+ case L'\a': fputs("\\a", out); break;
+ case L'\b': fputs("\\b", out); break;
+ case L'\f': fputs("\\f", out); break;
+ case L'\n': fputs("\\n", out); break;
+ case L'\r': fputs("\\r", out); break;
+ case L'\t': fputs("\\t", out); break;
+ case L'\v': fputs("\\v", out); break;
+ case L'\?': fputs("\\?", out); break;
+ case 27:
+ if (c_mode & _GNUC) {
+ fputs("\\e", out); break;
+ }
+ /* FALLTHROUGH */
+ default: {
+ const unsigned tc = *c;
+ if (tc < 0x80U) {
+ if (isprint(*c)) {
+ fputc(*c, out);
+ } else {
+ fprintf(out, "\\%03o", tc);
+ }
+ } else if (tc < 0x800) {
+ fputc(0xC0 | (tc >> 6), out);
+ fputc(0x80 | (tc & 0x3F), out);
+ } else if (tc < 0x10000) {
+ fputc(0xE0 | ( tc >> 12), out);
+ fputc(0x80 | ((tc >> 6) & 0x3F), out);
+ fputc(0x80 | ( tc & 0x3F), out);
+ } else {
+ fputc(0xF0 | ( tc >> 18), out);
+ fputc(0x80 | ((tc >> 12) & 0x3F), out);
+ fputc(0x80 | ((tc >> 6) & 0x3F), out);
+ fputc(0x80 | ( tc & 0x3F), out);
+ }
+ }
+ }
+ }
+ fputc(border, out);
+}
+
+/**
+ * Print a constant character expression.
+ *
+ * @param cnst the constant character expression
+ */
+static void print_character_constant(const const_expression_t *cnst)
+{
+ print_quoted_string(&cnst->v.character, '\'', 0);
+}
+
+static void print_wide_character_constant(const const_expression_t *cnst)
+{
+ print_quoted_wide_string(&cnst->v.wide_character, '\'', 0);
+}
+
+/**
+ * Prints a string literal expression.
+ *
+ * @param string_literal the string literal expression
+ */
+static void print_string_literal(
+ const string_literal_expression_t *string_literal)
+{
+ print_quoted_string(&string_literal->value, '"', 1);
+}
+
+/**
+ * Prints a predefined symbol.
+ */
+static void print_funcname(const funcname_expression_t *funcname)
+{
+ const char *s = "";
+ switch (funcname->kind) {
+ case FUNCNAME_FUNCTION: s = (c_mode & _C99) ? "__func__" : "__FUNCTION__"; break;
+ case FUNCNAME_PRETTY_FUNCTION: s = "__PRETTY_FUNCTION__"; break;
+ case FUNCNAME_FUNCSIG: s = "__FUNCSIG__"; break;
+ case FUNCNAME_FUNCDNAME: s = "__FUNCDNAME__"; break;
+ }
+ fputs(s, out);
+}
+
+static void print_wide_string_literal(
+ const wide_string_literal_expression_t *const wstr)
+{
+ print_quoted_wide_string(&wstr->value, '"', 1);
}
+static void print_compound_literal(
+ const compound_literal_expression_t *expression)
+{
+ fputc('(', out);
+ print_type(expression->type);
+ fputc(')', out);
+ print_initializer(expression->initializer);
+}
+
+static void print_assignment_expression(const expression_t *const expr)
+{
+ print_expression_prec(expr, PREC_ASSIGNMENT);
+}
+
+/**
+ * Prints a call expression.
+ *
+ * @param call the call expression
+ */
static void print_call_expression(const call_expression_t *call)
{
- print_expression(call->method);
- fprintf(out, "(");
+ print_expression_prec(call->function, PREC_POSTFIX);
+ fputc('(', out);
call_argument_t *argument = call->arguments;
int first = 1;
- while(argument != NULL) {
- if(!first) {
- fprintf(out, ", ");
+ while (argument != NULL) {
+ if (!first) {
+ fputs(", ", out);
} else {
first = 0;
}
- print_expression(argument->expression);
+ print_assignment_expression(argument->expression);
argument = argument->next;
}
- fprintf(out, ")");
+ fputc(')', out);
}
+/**
+ * Prints a binary expression.
+ *
+ * @param binexpr the binary expression
+ */
static void print_binary_expression(const binary_expression_t *binexpr)
{
- fprintf(out, "(");
- print_expression(binexpr->left);
- fprintf(out, " ");
- switch(binexpr->type) {
- case BINEXPR_INVALID: fputs("INVOP", out); break;
- case BINEXPR_COMMA: fputs(",", out); break;
- case BINEXPR_ASSIGN: fputs("=", out); break;
- case BINEXPR_ADD: fputs("+", out); break;
- case BINEXPR_SUB: fputs("-", out); break;
- case BINEXPR_MUL: fputs("*", out); break;
- case BINEXPR_MOD: fputs("%", out); break;
- case BINEXPR_DIV: fputs("/", out); break;
- case BINEXPR_BITWISE_OR: fputs("|", out); break;
- case BINEXPR_BITWISE_AND: fputs("&", out); break;
- case BINEXPR_BITWISE_XOR: fputs("^", out); break;
- case BINEXPR_LOGICAL_OR: fputs("||", out); break;
- case BINEXPR_LOGICAL_AND: fputs("&&", out); break;
- case BINEXPR_NOTEQUAL: fputs("!=", out); break;
- case BINEXPR_EQUAL: fputs("==", out); break;
- case BINEXPR_LESS: fputs("<", out); break;
- case BINEXPR_LESSEQUAL: fputs("<=", out); break;
- case BINEXPR_GREATER: fputs(">", out); break;
- case BINEXPR_GREATEREQUAL: fputs(">=", out); break;
- case BINEXPR_SHIFTLEFT: fputs("<<", out); break;
- case BINEXPR_SHIFTRIGHT: fputs(">>", out); break;
-
- case BINEXPR_ADD_ASSIGN: fputs("+=", out); break;
- case BINEXPR_SUB_ASSIGN: fputs("-=", out); break;
- case BINEXPR_MUL_ASSIGN: fputs("*=", out); break;
- case BINEXPR_MOD_ASSIGN: fputs("%=", out); break;
- case BINEXPR_DIV_ASSIGN: fputs("/=", out); break;
- case BINEXPR_BITWISE_OR_ASSIGN: fputs("|=", out); break;
- case BINEXPR_BITWISE_AND_ASSIGN: fputs("&=", out); break;
- case BINEXPR_BITWISE_XOR_ASSIGN: fputs("^=", out); break;
- case BINEXPR_SHIFTLEFT_ASSIGN: fputs("<<=", out); break;
- case BINEXPR_SHIFTRIGHT_ASSIGN: fputs(">>=", out); break;
- }
- fprintf(out, " ");
- print_expression(binexpr->right);
- fprintf(out, ")");
+ unsigned prec = get_expression_precedence(binexpr->base.kind);
+ int r2l = right_to_left(prec);
+
+ print_expression_prec(binexpr->left, prec + r2l);
+ char const* op;
+ switch (binexpr->base.kind) {
+ case EXPR_BINARY_COMMA: op = ", "; break;
+ case EXPR_BINARY_ASSIGN: op = " = "; break;
+ case EXPR_BINARY_ADD: op = " + "; break;
+ case EXPR_BINARY_SUB: op = " - "; break;
+ case EXPR_BINARY_MUL: op = " * "; break;
+ case EXPR_BINARY_MOD: op = " % "; break;
+ case EXPR_BINARY_DIV: op = " / "; break;
+ case EXPR_BINARY_BITWISE_OR: op = " | "; break;
+ case EXPR_BINARY_BITWISE_AND: op = " & "; break;
+ case EXPR_BINARY_BITWISE_XOR: op = " ^ "; break;
+ case EXPR_BINARY_LOGICAL_OR: op = " || "; break;
+ case EXPR_BINARY_LOGICAL_AND: op = " && "; break;
+ case EXPR_BINARY_NOTEQUAL: op = " != "; break;
+ case EXPR_BINARY_EQUAL: op = " == "; break;
+ case EXPR_BINARY_LESS: op = " < "; break;
+ case EXPR_BINARY_LESSEQUAL: op = " <= "; break;
+ case EXPR_BINARY_GREATER: op = " > "; break;
+ case EXPR_BINARY_GREATEREQUAL: op = " >= "; break;
+ case EXPR_BINARY_SHIFTLEFT: op = " << "; break;
+ case EXPR_BINARY_SHIFTRIGHT: op = " >> "; break;
+
+ case EXPR_BINARY_ADD_ASSIGN: op = " += "; break;
+ case EXPR_BINARY_SUB_ASSIGN: op = " -= "; break;
+ case EXPR_BINARY_MUL_ASSIGN: op = " *= "; break;
+ case EXPR_BINARY_MOD_ASSIGN: op = " %= "; break;
+ case EXPR_BINARY_DIV_ASSIGN: op = " /= "; break;
+ case EXPR_BINARY_BITWISE_OR_ASSIGN: op = " |= "; break;
+ case EXPR_BINARY_BITWISE_AND_ASSIGN: op = " &= "; break;
+ case EXPR_BINARY_BITWISE_XOR_ASSIGN: op = " ^= "; break;
+ case EXPR_BINARY_SHIFTLEFT_ASSIGN: op = " <<= "; break;
+ case EXPR_BINARY_SHIFTRIGHT_ASSIGN: op = " >>= "; break;
+ default: panic("invalid binexpression found");
+ }
+ fputs(op, out);
+ print_expression_prec(binexpr->right, prec + 1 - r2l);
}
+/**
+ * Prints an unary expression.
+ *
+ * @param unexpr the unary expression
+ */
static void print_unary_expression(const unary_expression_t *unexpr)
{
- switch(unexpr->type) {
- case UNEXPR_NEGATE: fputs("-", out); break;
- case UNEXPR_PLUS: fputs("+", out); break;
- case UNEXPR_NOT: fputs("!", out); break;
- case UNEXPR_BITWISE_NEGATE: fputs("~", out); break;
- case UNEXPR_PREFIX_INCREMENT: fputs("++", out); break;
- case UNEXPR_PREFIX_DECREMENT: fputs("--", out); break;
- case UNEXPR_DEREFERENCE: fputs("*", out); break;
- case UNEXPR_TAKE_ADDRESS: fputs("&", out); break;
-
- case UNEXPR_POSTFIX_INCREMENT:
- fputs("(", out);
- print_expression(unexpr->value);
- fputs(")", out);
+ unsigned prec = get_expression_precedence(unexpr->base.kind);
+ switch (unexpr->base.kind) {
+ case EXPR_UNARY_NEGATE: fputc('-', out); break;
+ case EXPR_UNARY_PLUS: fputc('+', out); break;
+ case EXPR_UNARY_NOT: fputc('!', out); break;
+ case EXPR_UNARY_BITWISE_NEGATE: fputc('~', out); break;
+ case EXPR_UNARY_PREFIX_INCREMENT: fputs("++", out); break;
+ case EXPR_UNARY_PREFIX_DECREMENT: fputs("--", out); break;
+ case EXPR_UNARY_DEREFERENCE: fputc('*', out); break;
+ case EXPR_UNARY_TAKE_ADDRESS: fputc('&', out); break;
+ case EXPR_UNARY_DELETE: fputs("delete ", out); break;
+ case EXPR_UNARY_DELETE_ARRAY: fputs("delete [] ", out); break;
+
+ case EXPR_UNARY_POSTFIX_INCREMENT:
+ print_expression_prec(unexpr->value, prec);
fputs("++", out);
return;
- case UNEXPR_POSTFIX_DECREMENT:
- fputs("(", out);
- print_expression(unexpr->value);
- fputs(")", out);
+ case EXPR_UNARY_POSTFIX_DECREMENT:
+ print_expression_prec(unexpr->value, prec);
fputs("--", out);
return;
- case UNEXPR_CAST:
- fputs("(", out);
- print_type(unexpr->expression.datatype);
- fputs(")", out);
+ case EXPR_UNARY_CAST_IMPLICIT:
+ case EXPR_UNARY_CAST:
+ fputc('(', out);
+ print_type(unexpr->base.type);
+ fputc(')', out);
break;
- case UNEXPR_INVALID:
- fprintf(out, "unop%d", unexpr->type);
+ case EXPR_UNARY_ASSUME:
+ fputs("__assume(", out);
+ print_assignment_expression(unexpr->value);
+ fputc(')', out);
+ return;
+
+ case EXPR_UNARY_THROW:
+ if (unexpr->value == NULL) {
+ fputs("throw", out);
+ return;
+ }
+ fputs("throw ", out);
break;
+
+ default:
+ panic("invalid unary expression found");
}
- fputs("(", out);
- print_expression(unexpr->value);
- fputs(")", out);
+ print_expression_prec(unexpr->value, prec);
}
+/**
+ * Prints a reference expression.
+ *
+ * @param ref the reference expression
+ */
static void print_reference_expression(const reference_expression_t *ref)
{
- fprintf(out, "%s", ref->declaration->symbol->string);
+ fputs(ref->entity->base.symbol->string, out);
}
+/**
+ * Prints a label address expression.
+ *
+ * @param ref the reference expression
+ */
+static void print_label_address_expression(const label_address_expression_t *le)
+{
+ fprintf(out, "&&%s", le->label->base.symbol->string);
+}
+
+/**
+ * Prints an array expression.
+ *
+ * @param expression the array expression
+ */
static void print_array_expression(const array_access_expression_t *expression)
{
- fputs("(", out);
- print_expression(expression->array_ref);
- fputs(")[", out);
- print_expression(expression->index);
- fputs("]", out);
+ if (!expression->flipped) {
+ print_expression_prec(expression->array_ref, PREC_POSTFIX);
+ fputc('[', out);
+ print_expression(expression->index);
+ fputc(']', out);
+ } else {
+ print_expression_prec(expression->index, PREC_POSTFIX);
+ fputc('[', out);
+ print_expression(expression->array_ref);
+ fputc(']', out);
+ }
}
-static void print_sizeof_expression(const sizeof_expression_t *expression)
+/**
+ * Prints a typeproperty expression (sizeof or __alignof__).
+ *
+ * @param expression the type property expression
+ */
+static void print_typeprop_expression(const typeprop_expression_t *expression)
{
- fputs("sizeof", out);
- if(expression->size_expression != NULL) {
- fputc('(', out);
- print_expression(expression->size_expression);
- fputc(')', out);
+ if (expression->base.kind == EXPR_SIZEOF) {
+ fputs("sizeof", out);
+ } else {
+ assert(expression->base.kind == EXPR_ALIGNOF);
+ fputs("__alignof__", out);
+ }
+ if (expression->tp_expression != NULL) {
+ /* PREC_TOP: always print the '()' here, sizeof x is right but unusual */
+ print_expression_prec(expression->tp_expression, PREC_TOP);
} else {
fputc('(', out);
print_type(expression->type);
}
}
-static void print_builtin_symbol(const builtin_symbol_expression_t *expression)
+/**
+ * Prints a builtin constant expression.
+ *
+ * @param expression the builtin constant expression
+ */
+static void print_builtin_constant(const builtin_constant_expression_t *expression)
{
- fputs(expression->symbol->string, out);
+ fputs("__builtin_constant_p(", out);
+ print_assignment_expression(expression->value);
+ fputc(')', out);
+}
+
+/**
+ * Prints a builtin types compatible expression.
+ *
+ * @param expression the builtin types compatible expression
+ */
+static void print_builtin_types_compatible(
+ const builtin_types_compatible_expression_t *expression)
+{
+ fputs("__builtin_types_compatible_p(", out);
+ print_type(expression->left);
+ fputs(", ", out);
+ print_type(expression->right);
+ fputc(')', out);
}
+/**
+ * Prints a conditional expression.
+ *
+ * @param expression the conditional expression
+ */
static void print_conditional(const conditional_expression_t *expression)
{
- fputs("(", out);
- print_expression(expression->condition);
- fputs(" ? ", out);
- print_expression(expression->true_expression);
- fputs(" : ", out);
- print_expression(expression->false_expression);
- fputs(")", out);
+ print_expression_prec(expression->condition, PREC_LOGICAL_OR);
+ if (expression->true_expression != NULL) {
+ fputs(" ? ", out);
+ print_expression_prec(expression->true_expression, PREC_EXPRESSION);
+ fputs(" : ", out);
+ } else {
+ fputs(" ?: ", out);
+ }
+ precedence_t prec = c_mode & _CXX ? PREC_ASSIGNMENT : PREC_CONDITIONAL;
+ print_expression_prec(expression->false_expression, prec);
}
+/**
+ * Prints a va_start expression.
+ *
+ * @param expression the va_start expression
+ */
+static void print_va_start(const va_start_expression_t *const expression)
+{
+ fputs("__builtin_va_start(", out);
+ print_assignment_expression(expression->ap);
+ fputs(", ", out);
+ fputs(expression->parameter->base.base.symbol->string, out);
+ fputc(')', out);
+}
+
+/**
+ * Prints a va_arg expression.
+ *
+ * @param expression the va_arg expression
+ */
static void print_va_arg(const va_arg_expression_t *expression)
{
fputs("__builtin_va_arg(", out);
- print_expression(expression->arg);
+ print_assignment_expression(expression->ap);
fputs(", ", out);
- print_type(expression->expression.datatype);
- fputs(")", out);
+ print_type(expression->base.type);
+ fputc(')', out);
}
-void print_expression(const expression_t *expression)
+/**
+ * Prints a select expression (. or ->).
+ *
+ * @param expression the select expression
+ */
+static void print_select(const select_expression_t *expression)
+{
+ print_expression_prec(expression->compound, PREC_POSTFIX);
+ if (is_type_pointer(skip_typeref(expression->compound->base.type))) {
+ fputs("->", out);
+ } else {
+ fputc('.', out);
+ }
+ fputs(expression->compound_entry->base.symbol->string, out);
+}
+
+/**
+ * Prints a type classify expression.
+ *
+ * @param expr the type classify expression
+ */
+static void print_classify_type_expression(
+ const classify_type_expression_t *const expr)
+{
+ fputs("__builtin_classify_type(", out);
+ print_assignment_expression(expr->type_expression);
+ fputc(')', out);
+}
+
+/**
+ * Prints a designator.
+ *
+ * @param designator the designator
+ */
+static void print_designator(const designator_t *designator)
+{
+ for ( ; designator != NULL; designator = designator->next) {
+ if (designator->symbol == NULL) {
+ fputc('[', out);
+ print_expression(designator->array_index);
+ fputc(']', out);
+ } else {
+ fputc('.', out);
+ fputs(designator->symbol->string, out);
+ }
+ }
+}
+
+/**
+ * Prints an offsetof expression.
+ *
+ * @param expression the offset expression
+ */
+static void print_offsetof_expression(const offsetof_expression_t *expression)
+{
+ fputs("__builtin_offsetof", out);
+ fputc('(', out);
+ print_type(expression->type);
+ fputc(',', out);
+ print_designator(expression->designator);
+ fputc(')', out);
+}
+
+/**
+ * Prints a statement expression.
+ *
+ * @param expression the statement expression
+ */
+static void print_statement_expression(const statement_expression_t *expression)
{
- switch(expression->type) {
+ fputc('(', out);
+ print_statement(expression->statement);
+ fputc(')', out);
+}
+
+/**
+ * Prints an expression with parenthesis if needed.
+ *
+ * @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)
+{
+ if (expression->kind == EXPR_UNARY_CAST_IMPLICIT && !print_implicit_casts) {
+ expression = expression->unary.value;
+ }
+
+ bool parenthesized =
+ expression->base.parenthesized ||
+ (print_parenthesis && top_prec != PREC_BOTTOM) ||
+ top_prec > get_expression_precedence(expression->base.kind);
+
+ if (parenthesized)
+ fputc('(', out);
+ switch (expression->kind) {
+ case EXPR_UNKNOWN:
case EXPR_INVALID:
- fprintf(out, "*invalid expression*");
+ fputs("$invalid expression$", out);
+ break;
+ case EXPR_CHARACTER_CONSTANT:
+ print_character_constant(&expression->conste);
+ break;
+ case EXPR_WIDE_CHARACTER_CONSTANT:
+ print_wide_character_constant(&expression->conste);
break;
case EXPR_CONST:
- print_const((const const_t*) expression);
+ print_const(&expression->conste);
+ break;
+ case EXPR_FUNCNAME:
+ print_funcname(&expression->funcname);
break;
- case EXPR_FUNCTION:
- case EXPR_PRETTY_FUNCTION:
case EXPR_STRING_LITERAL:
- print_string_literal((const string_literal_t*) expression);
+ print_string_literal(&expression->string);
+ break;
+ case EXPR_WIDE_STRING_LITERAL:
+ print_wide_string_literal(&expression->wide_string);
+ break;
+ case EXPR_COMPOUND_LITERAL:
+ print_compound_literal(&expression->compound_literal);
break;
case EXPR_CALL:
- print_call_expression((const call_expression_t*) expression);
+ print_call_expression(&expression->call);
break;
- case EXPR_BINARY:
- print_binary_expression((const binary_expression_t*) expression);
+ EXPR_BINARY_CASES
+ print_binary_expression(&expression->binary);
break;
case EXPR_REFERENCE:
- print_reference_expression((const reference_expression_t*) expression);
+ case EXPR_REFERENCE_ENUM_VALUE:
+ print_reference_expression(&expression->reference);
break;
case EXPR_ARRAY_ACCESS:
- print_array_expression((const array_access_expression_t*) expression);
+ print_array_expression(&expression->array_access);
break;
- case EXPR_UNARY:
- print_unary_expression((const unary_expression_t*) expression);
+ 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_sizeof_expression((const sizeof_expression_t*) expression);
+ case EXPR_ALIGNOF:
+ print_typeprop_expression(&expression->typeprop);
+ break;
+ case EXPR_BUILTIN_CONSTANT_P:
+ print_builtin_constant(&expression->builtin_constant);
break;
- case EXPR_BUILTIN_SYMBOL:
- print_builtin_symbol((const builtin_symbol_expression_t*) expression);
+ case EXPR_BUILTIN_TYPES_COMPATIBLE_P:
+ print_builtin_types_compatible(&expression->builtin_types_compatible);
break;
case EXPR_CONDITIONAL:
- print_conditional((const conditional_expression_t*) expression);
+ print_conditional(&expression->conditional);
+ break;
+ case EXPR_VA_START:
+ print_va_start(&expression->va_starte);
break;
case EXPR_VA_ARG:
- print_va_arg((const va_arg_expression_t*) expression);
+ print_va_arg(&expression->va_arge);
+ break;
+ case EXPR_SELECT:
+ print_select(&expression->select);
+ break;
+ case EXPR_CLASSIFY_TYPE:
+ print_classify_type_expression(&expression->classify_type);
break;
-
case EXPR_OFFSETOF:
+ print_offsetof_expression(&expression->offsetofe);
+ break;
case EXPR_STATEMENT:
- case EXPR_SELECT:
+ print_statement_expression(&expression->statement);
+ break;
+
+ default:
/* TODO */
- fprintf(out, "some expression of type %d", expression->type);
+ fprintf(out, "some expression of type %d", (int)expression->kind);
break;
}
+ if (parenthesized)
+ fputc(')', out);
}
+/**
+ * Print an compound statement.
+ *
+ * @param block the compound statement
+ */
static void print_compound_statement(const compound_statement_t *block)
{
fputs("{\n", out);
- indent++;
+ ++indent;
statement_t *statement = block->statements;
- while(statement != NULL) {
- print_indent();
+ while (statement != NULL) {
+ if (statement->base.kind == STATEMENT_CASE_LABEL)
+ --indent;
+ if (statement->kind != STATEMENT_LABEL)
+ print_indent();
print_statement(statement);
- statement = statement->next;
+ statement = statement->base.next;
}
- indent--;
+ --indent;
print_indent();
- fputs("}\n", out);
+ fputs(block->stmt_expr ? "}" : "}\n", out);
}
+/**
+ * Print a return statement.
+ *
+ * @param statement the return statement
+ */
static void print_return_statement(const return_statement_t *statement)
{
- fprintf(out, "return ");
- if(statement->return_value != NULL)
- print_expression(statement->return_value);
- fputs(";\n", out);
+ expression_t const *const val = statement->value;
+ if (val != NULL) {
+ fputs("return ", out);
+ print_expression(val);
+ fputs(";\n", out);
+ } else {
+ fputs("return;\n", out);
+ }
}
+/**
+ * Print an expression statement.
+ *
+ * @param statement the expression statement
+ */
static void print_expression_statement(const expression_statement_t *statement)
{
print_expression(statement->expression);
fputs(";\n", out);
}
+/**
+ * Print a goto statement.
+ *
+ * @param statement the goto statement
+ */
static void print_goto_statement(const goto_statement_t *statement)
{
- fprintf(out, "goto ");
- if(statement->label != NULL) {
- fprintf(out, "%s", statement->label->symbol->string);
+ fputs("goto ", out);
+ if (statement->expression != NULL) {
+ fputc('*', out);
+ print_expression(statement->expression);
} else {
- fprintf(out, "?%s", statement->label_symbol->string);
+ fputs(statement->label->base.symbol->string, out);
}
fputs(";\n", out);
}
+/**
+ * Print a label statement.
+ *
+ * @param statement the label statement
+ */
static void print_label_statement(const label_statement_t *statement)
{
- fprintf(out, "%s:\n", statement->symbol->string);
+ fprintf(out, "%s:\n", statement->label->base.symbol->string);
+ print_indent();
+ print_statement(statement->statement);
}
+/**
+ * Print an if statement.
+ *
+ * @param statement the if statement
+ */
static void print_if_statement(const if_statement_t *statement)
{
- fputs("if(", out);
+ fputs("if (", out);
print_expression(statement->condition);
fputs(") ", out);
- if(statement->true_statement != NULL) {
- print_statement(statement->true_statement);
- }
+ print_statement(statement->true_statement);
- if(statement->false_statement != NULL) {
+ if (statement->false_statement != NULL) {
print_indent();
fputs("else ", out);
print_statement(statement->false_statement);
}
}
+/**
+ * Print a switch statement.
+ *
+ * @param statement the switch statement
+ */
static void print_switch_statement(const switch_statement_t *statement)
{
- fputs("switch(", out);
+ fputs("switch (", out);
print_expression(statement->expression);
fputs(") ", out);
print_statement(statement->body);
}
+/**
+ * Print a case label (including the default label).
+ *
+ * @param statement the case label statement
+ */
static void print_case_label(const case_label_statement_t *statement)
{
- if(statement->expression == NULL) {
+ if (statement->expression == NULL) {
fputs("default:\n", out);
} else {
fputs("case ", out);
print_expression(statement->expression);
+ if (statement->end_range != NULL) {
+ fputs(" ... ", out);
+ print_expression(statement->end_range);
+ }
fputs(":\n", out);
}
+ ++indent;
+ if (statement->statement != NULL) {
+ if (statement->statement->base.kind == STATEMENT_CASE_LABEL) {
+ --indent;
+ }
+ print_indent();
+ print_statement(statement->statement);
+ }
+}
+
+static void print_typedef(const entity_t *entity)
+{
+ fputs("typedef ", out);
+ print_type_ext(entity->typedefe.type, entity->base.symbol, NULL);
+ fputc(';', out);
+}
+
+/**
+ * returns true if the entity is a compiler generated one and has no real
+ * correspondenc in the source file
+ */
+static bool is_generated_entity(const entity_t *entity)
+{
+ if (entity->kind == ENTITY_TYPEDEF)
+ return entity->typedefe.builtin;
+
+ if (is_declaration(entity))
+ return entity->declaration.implicit;
+
+ return false;
}
+/**
+ * Print a declaration statement.
+ *
+ * @param statement the statement
+ */
static void print_declaration_statement(
const declaration_statement_t *statement)
{
- declaration_t *declaration = statement->declarations_begin;
- for( ; declaration != statement->declarations_end->next;
- declaration = declaration->next) {
- print_declaration(declaration);
+ bool first = true;
+ entity_t *entity = statement->declarations_begin;
+ if (entity == NULL) {
+ fputs("/* empty declaration statement */\n", out);
+ return;
+ }
+
+ entity_t *const end = statement->declarations_end->base.next;
+ for (; entity != end; entity = entity->base.next) {
+ if (entity->kind == ENTITY_ENUM_VALUE)
+ continue;
+ if (is_generated_entity(entity))
+ continue;
+
+ if (!first) {
+ print_indent();
+ } else {
+ first = false;
+ }
+
+ print_entity(entity);
+ fputc('\n', out);
}
}
+/**
+ * Print a while statement.
+ *
+ * @param statement the statement
+ */
static void print_while_statement(const while_statement_t *statement)
{
- fputs("while(", out);
+ fputs("while (", out);
print_expression(statement->condition);
fputs(") ", out);
print_statement(statement->body);
}
+/**
+ * Print a do-while statement.
+ *
+ * @param statement the statement
+ */
static void print_do_while_statement(const do_while_statement_t *statement)
{
fputs("do ", out);
print_statement(statement->body);
print_indent();
- fputs("while(", out);
+ fputs("while (", out);
print_expression(statement->condition);
fputs(");\n", out);
}
+/**
+ * Print a for statement.
+ *
+ * @param statement the statement
+ */
static void print_for_statement(const for_statement_t *statement)
{
- fputs("for(", out);
- if(statement->context.declarations != NULL) {
- assert(statement->initialisation == NULL);
- print_declaration(statement->context.declarations);
- if(statement->context.declarations->next != NULL) {
- panic("multiple declarations in for statement not supported yet");
- }
- } else if(statement->initialisation) {
+ fputs("for (", out);
+ if (statement->initialisation != NULL) {
print_expression(statement->initialisation);
+ fputc(';', out);
+ } else {
+ entity_t const *entity = statement->scope.entities;
+ for (; entity != NULL; entity = entity->base.next) {
+ if (is_generated_entity(entity))
+ continue;
+ /* FIXME display of multiple declarations is wrong */
+ print_declaration(entity);
+ }
}
- fputs("; ", out);
- if(statement->condition != NULL) {
+ if (statement->condition != NULL) {
+ fputc(' ', out);
print_expression(statement->condition);
}
- fputs("; ", out);
- if(statement->step != NULL) {
+ fputc(';', out);
+ if (statement->step != NULL) {
+ fputc(' ', out);
print_expression(statement->step);
}
- fputs(")", out);
+ fputs(") ", out);
print_statement(statement->body);
}
+/**
+ * Print assembler arguments.
+ *
+ * @param arguments the arguments
+ */
+static void print_asm_arguments(asm_argument_t *arguments)
+{
+ asm_argument_t *argument = arguments;
+ for (; argument != NULL; argument = argument->next) {
+ if (argument != arguments)
+ fputs(", ", out);
+
+ if (argument->symbol) {
+ fprintf(out, "[%s] ", argument->symbol->string);
+ }
+ print_quoted_string(&argument->constraints, '"', 1);
+ fputs(" (", out);
+ print_expression(argument->expression);
+ fputc(')', out);
+ }
+}
+
+/**
+ * Print assembler clobbers.
+ *
+ * @param clobbers the clobbers
+ */
+static void print_asm_clobbers(asm_clobber_t *clobbers)
+{
+ asm_clobber_t *clobber = clobbers;
+ for (; clobber != NULL; clobber = clobber->next) {
+ if (clobber != clobbers)
+ fputs(", ", out);
+
+ print_quoted_string(&clobber->clobber, '"', 1);
+ }
+}
+
+/**
+ * Print an assembler statement.
+ *
+ * @param statement the statement
+ */
+static void print_asm_statement(const asm_statement_t *statement)
+{
+ fputs("asm ", out);
+ if (statement->is_volatile) {
+ fputs("volatile ", out);
+ }
+ fputc('(', out);
+ print_quoted_string(&statement->asm_text, '"', 1);
+ if (statement->outputs == NULL &&
+ statement->inputs == NULL &&
+ statement->clobbers == NULL)
+ goto end_of_print_asm_statement;
+
+ fputs(" : ", out);
+ print_asm_arguments(statement->outputs);
+ if (statement->inputs == NULL && statement->clobbers == NULL)
+ goto end_of_print_asm_statement;
+
+ fputs(" : ", out);
+ print_asm_arguments(statement->inputs);
+ if (statement->clobbers == NULL)
+ goto end_of_print_asm_statement;
+
+ fputs(" : ", out);
+ print_asm_clobbers(statement->clobbers);
+
+end_of_print_asm_statement:
+ fputs(");\n", out);
+}
+
+/**
+ * Print a microsoft __try statement.
+ *
+ * @param statement the statement
+ */
+static void print_ms_try_statement(const ms_try_statement_t *statement)
+{
+ fputs("__try ", out);
+ print_statement(statement->try_statement);
+ print_indent();
+ if (statement->except_expression != NULL) {
+ fputs("__except(", out);
+ print_expression(statement->except_expression);
+ fputs(") ", out);
+ } else {
+ fputs("__finally ", out);
+ }
+ print_statement(statement->final_statement);
+}
+
+/**
+ * Print a microsoft __leave statement.
+ *
+ * @param statement the statement
+ */
+static void print_leave_statement(const leave_statement_t *statement)
+{
+ (void)statement;
+ fputs("__leave;\n", out);
+}
+
+/**
+ * Print a statement.
+ *
+ * @param statement the statement
+ */
void print_statement(const statement_t *statement)
{
- switch(statement->type) {
+ switch (statement->kind) {
+ case STATEMENT_EMPTY:
+ fputs(";\n", out);
+ break;
case STATEMENT_COMPOUND:
- print_compound_statement((const compound_statement_t*) statement);
+ print_compound_statement(&statement->compound);
break;
case STATEMENT_RETURN:
- print_return_statement((const return_statement_t*) statement);
+ print_return_statement(&statement->returns);
break;
case STATEMENT_EXPRESSION:
- print_expression_statement((const expression_statement_t*) statement);
+ print_expression_statement(&statement->expression);
break;
case STATEMENT_LABEL:
- print_label_statement((const label_statement_t*) statement);
+ print_label_statement(&statement->label);
break;
case STATEMENT_GOTO:
- print_goto_statement((const goto_statement_t*) statement);
+ print_goto_statement(&statement->gotos);
break;
case STATEMENT_CONTINUE:
fputs("continue;\n", out);
fputs("break;\n", out);
break;
case STATEMENT_IF:
- print_if_statement((const if_statement_t*) statement);
+ print_if_statement(&statement->ifs);
break;
case STATEMENT_SWITCH:
- print_switch_statement((const switch_statement_t*) statement);
+ print_switch_statement(&statement->switchs);
break;
case STATEMENT_CASE_LABEL:
- print_case_label((const case_label_statement_t*) statement);
+ print_case_label(&statement->case_label);
break;
case STATEMENT_DECLARATION:
- print_declaration_statement((const declaration_statement_t*) statement);
+ print_declaration_statement(&statement->declaration);
break;
case STATEMENT_WHILE:
- print_while_statement((const while_statement_t*) statement);
+ print_while_statement(&statement->whiles);
break;
case STATEMENT_DO_WHILE:
- print_do_while_statement((const do_while_statement_t*) statement);
+ print_do_while_statement(&statement->do_while);
break;
case STATEMENT_FOR:
- print_for_statement((const for_statement_t*) statement);
+ 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_INVALID:
- fprintf(out, "*invalid statement*");
+ fputs("$invalid statement$\n", out);
break;
}
}
-static void print_storage_class(storage_class_t storage_class)
+/**
+ * Print a storage class.
+ *
+ * @param storage_class the storage class
+ */
+static void print_storage_class(storage_class_tag_t storage_class)
{
- switch(storage_class) {
- case STORAGE_CLASS_ENUM_ENTRY:
- case STORAGE_CLASS_NONE:
- break;
- case STORAGE_CLASS_TYPEDEF: fputs("typedef ", out); break;
- case STORAGE_CLASS_EXTERN: fputs("extern ", out); break;
- case STORAGE_CLASS_STATIC: fputs("static ", out); break;
- case STORAGE_CLASS_AUTO: fputs("auto ", out); break;
- case STORAGE_CLASS_REGISTER: fputs("register ", out); break;
+ switch (storage_class) {
+ case STORAGE_CLASS_NONE: return;
+ case STORAGE_CLASS_TYPEDEF: fputs("typedef ", out); return;
+ case STORAGE_CLASS_EXTERN: fputs("extern ", out); return;
+ case STORAGE_CLASS_STATIC: fputs("static ", out); return;
+ case STORAGE_CLASS_AUTO: fputs("auto ", out); return;
+ case STORAGE_CLASS_REGISTER: fputs("register ", out); return;
}
+ panic("invalid storage class");
}
+/**
+ * Print an initializer.
+ *
+ * @param initializer the initializer
+ */
void print_initializer(const initializer_t *initializer)
{
- if(initializer->type == INITIALIZER_VALUE) {
- print_expression(initializer->v.value);
+ if (initializer == NULL) {
+ fputs("{}", out);
return;
}
- assert(initializer->type == INITIALIZER_LIST);
- fputs("{ ", out);
- initializer_t *iter = initializer->v.list;
- for( ; iter != NULL; iter = iter->next) {
- print_initializer(iter);
- if(iter->next != NULL) {
- fputs(", ", out);
+ switch (initializer->kind) {
+ case INITIALIZER_VALUE: {
+ const initializer_value_t *value = &initializer->value;
+ print_assignment_expression(value->value);
+ return;
+ }
+ case INITIALIZER_LIST: {
+ assert(initializer->kind == INITIALIZER_LIST);
+ fputs("{ ", out);
+ const initializer_list_t *list = &initializer->list;
+
+ for (size_t i = 0 ; i < list->len; ++i) {
+ const initializer_t *sub_init = list->initializers[i];
+ print_initializer(list->initializers[i]);
+ if (i < list->len-1) {
+ if (sub_init == NULL || sub_init->kind != INITIALIZER_DESIGNATOR)
+ fputs(", ", out);
+ }
+ }
+ fputs(" }", out);
+ return;
+ }
+ case INITIALIZER_STRING:
+ print_quoted_string(&initializer->string.string, '"', 1);
+ return;
+ case INITIALIZER_WIDE_STRING:
+ print_quoted_wide_string(&initializer->wide_string.string, '"', 1);
+ return;
+ case INITIALIZER_DESIGNATOR:
+ print_designator(initializer->designator.designator);
+ fputs(" = ", out);
+ return;
+ }
+
+ panic("invalid initializer kind found");
+}
+
+/**
+ * Print microsoft extended declaration modifiers.
+ */
+static void print_ms_modifiers(const declaration_t *declaration)
+{
+ if ((c_mode & _MS) == 0)
+ return;
+
+ decl_modifiers_t modifiers = declaration->modifiers;
+
+ bool ds_shown = false;
+ const char *next = "(";
+
+ if (declaration->base.kind == ENTITY_VARIABLE) {
+ variable_t *variable = (variable_t*)declaration;
+ if (variable->alignment != 0
+ || variable->get_property_sym != NULL
+ || variable->put_property_sym != NULL) {
+ if (!ds_shown) {
+ fputs("__declspec", out);
+ ds_shown = true;
+ }
+
+ if (variable->alignment != 0) {
+ fputs(next, out); next = ", "; fprintf(out, "align(%u)", variable->alignment);
+ }
+ if (variable->get_property_sym != NULL
+ || variable->put_property_sym != NULL) {
+ char *comma = "";
+ fputs(next, out); next = ", "; fputs("property(", out);
+ if (variable->get_property_sym != NULL) {
+ fprintf(out, "get=%s", variable->get_property_sym->string);
+ comma = ", ";
+ }
+ if (variable->put_property_sym != NULL)
+ fprintf(out, "%sput=%s", comma, variable->put_property_sym->string);
+ fputc(')', out);
+ }
}
}
- fputs("}", out);
+
+ /* DM_FORCEINLINE handled outside. */
+ if ((modifiers & ~DM_FORCEINLINE) != 0) {
+ if (!ds_shown) {
+ fputs("__declspec", out);
+ ds_shown = true;
+ }
+ if (modifiers & DM_DLLIMPORT) {
+ fputs(next, out); next = ", "; fputs("dllimport", out);
+ }
+ if (modifiers & DM_DLLEXPORT) {
+ fputs(next, out); next = ", "; fputs("dllexport", out);
+ }
+ if (modifiers & DM_THREAD) {
+ fputs(next, out); next = ", "; fputs("thread", out);
+ }
+ if (modifiers & DM_NAKED) {
+ fputs(next, out); next = ", "; fputs("naked", out);
+ }
+ if (modifiers & DM_THREAD) {
+ fputs(next, out); next = ", "; fputs("thread", out);
+ }
+ if (modifiers & DM_SELECTANY) {
+ fputs(next, out); next = ", "; fputs("selectany", out);
+ }
+ if (modifiers & DM_NOTHROW) {
+ fputs(next, out); next = ", "; fputs("nothrow", out);
+ }
+ if (modifiers & DM_NORETURN) {
+ fputs(next, out); next = ", "; fputs("noreturn", out);
+ }
+ if (modifiers & DM_NOINLINE) {
+ fputs(next, out); next = ", "; fputs("noinline", out);
+ }
+ if (modifiers & DM_DEPRECATED) {
+ fputs(next, out); next = ", "; fputs("deprecated", out);
+ if (declaration->deprecated_string != NULL)
+ fprintf(out, "(\"%s\")",
+ declaration->deprecated_string);
+ }
+ if (modifiers & DM_RESTRICT) {
+ fputs(next, out); next = ", "; fputs("restrict", out);
+ }
+ if (modifiers & DM_NOALIAS) {
+ fputs(next, out); next = ", "; fputs("noalias", out);
+ }
+ }
+
+ if (ds_shown)
+ fputs(") ", out);
}
-static void print_declaration(const declaration_t *declaration)
+static void print_scope(const scope_t *scope)
{
- print_storage_class(declaration->storage_class);
- print_type_ext(declaration->type, declaration->symbol,
- &declaration->context);
- if(declaration->statement != NULL) {
+ const entity_t *entity = scope->entities;
+ for ( ; entity != NULL; entity = entity->base.next) {
+ print_indent();
+ print_entity(entity);
fputs("\n", out);
- print_statement(declaration->statement);
- } else if(declaration->initializer != NULL) {
- fputs(" = ", out);
- print_initializer(declaration->initializer);
- fprintf(out, ";\n");
- } else {
- fprintf(out, ";\n");
}
}
+static void print_namespace(const namespace_t *namespace)
+{
+ fputs("namespace ", out);
+ if (namespace->base.symbol != NULL) {
+ fputs(namespace->base.symbol->string, out);
+ fputc(' ', out);
+ }
+
+ fputs("{\n", out);
+ ++indent;
+
+ print_scope(&namespace->members);
+
+ --indent;
+ print_indent();
+ fputs("}\n", out);
+}
+
+/**
+ * Print a variable or function declaration
+ */
+void print_declaration(const entity_t *entity)
+{
+ assert(is_declaration(entity));
+ const declaration_t *declaration = &entity->declaration;
+
+ print_storage_class((storage_class_tag_t)declaration->declared_storage_class);
+ if (entity->kind == ENTITY_FUNCTION) {
+ function_t *function = (function_t*)declaration;
+ if (function->is_inline) {
+ if (declaration->modifiers & DM_FORCEINLINE) {
+ fputs("__forceinline ", out);
+ } else if (declaration->modifiers & DM_MICROSOFT_INLINE) {
+ fputs("__inline ", out);
+ } else {
+ fputs("inline ", out);
+ }
+ }
+ }
+ print_ms_modifiers(declaration);
+ switch (entity->kind) {
+ case ENTITY_FUNCTION:
+ print_type_ext(entity->declaration.type, entity->base.symbol,
+ &entity->function.parameters);
+
+ if (entity->function.statement != NULL) {
+ fputc('\n', out);
+ print_indent();
+ print_statement(entity->function.statement);
+ return;
+ }
+ break;
+
+ case ENTITY_VARIABLE:
+ if (entity->variable.thread_local)
+ fputs("__thread ", out);
+ print_type_ext(declaration->type, declaration->base.symbol, NULL);
+ if (entity->variable.initializer != NULL) {
+ fputs(" = ", out);
+ print_initializer(entity->variable.initializer);
+ }
+ break;
+
+ default:
+ print_type_ext(declaration->type, declaration->base.symbol, NULL);
+ break;
+ }
+ fputc(';', out);
+}
+
+/**
+ * Prints an expression.
+ *
+ * @param expression the expression
+ */
+void print_expression(const expression_t *expression)
+{
+ print_expression_prec(expression, PREC_BOTTOM);
+}
+
+/**
+ * Print a declaration.
+ *
+ * @param declaration the declaration
+ */
+void print_entity(const entity_t *entity)
+{
+ if (entity->base.namespc != NAMESPACE_NORMAL && entity->base.symbol == NULL)
+ return;
+
+ switch ((entity_kind_tag_t)entity->kind) {
+ case ENTITY_VARIABLE:
+ case ENTITY_PARAMETER:
+ case ENTITY_COMPOUND_MEMBER:
+ case ENTITY_FUNCTION:
+ print_declaration(entity);
+ return;
+ case ENTITY_TYPEDEF:
+ print_typedef(entity);
+ return;
+ case ENTITY_STRUCT:
+ fputs("struct ", out);
+ fputs(entity->base.symbol->string, out);
+ if (entity->structe.complete) {
+ fputc(' ', out);
+ print_compound_definition(&entity->structe);
+ }
+ fputc(';', out);
+ return;
+ case ENTITY_UNION:
+ fputs("union ", out);
+ fputs(entity->base.symbol->string, out);
+ if (entity->unione.complete) {
+ fputc(' ', out);
+ print_compound_definition(&entity->unione);
+ }
+ fputc(';', out);
+ return;
+ case ENTITY_ENUM:
+ fputs("enum ", out);
+ fputs(entity->base.symbol->string, out);
+ fputc(' ', out);
+ print_enum_definition(&entity->enume);
+ fputc(';', out);
+ return;
+ case ENTITY_NAMESPACE:
+ print_namespace(&entity->namespacee);
+ return;
+ case ENTITY_LOCAL_LABEL:
+ fprintf(out, "__label__ %s;", entity->base.symbol->string);
+ return;
+ case ENTITY_LABEL:
+ case ENTITY_ENUM_VALUE:
+ panic("print_entity used on unexpected entity type");
+ case ENTITY_INVALID:
+ break;
+ }
+ panic("Invalid entity type encountered");
+}
+
+/**
+ * Print the AST of a translation unit.
+ *
+ * @param unit the translation unit
+ */
void print_ast(const translation_unit_t *unit)
{
- declaration_t *declaration = unit->context.declarations;
- while(declaration != NULL) {
- print_declaration(declaration);
+ inc_type_visited();
+
+ entity_t *entity = unit->scope.entities;
+ for ( ; entity != NULL; entity = entity->base.next) {
+ if (entity->kind == ENTITY_ENUM_VALUE)
+ continue;
+ if (entity->base.namespc != NAMESPACE_NORMAL
+ && entity->base.symbol == NULL)
+ continue;
+ if (is_generated_entity(entity))
+ continue;
+
+ print_indent();
+ print_entity(entity);
+ fputc('\n', out);
+ }
+}
+
+bool is_constant_initializer(const initializer_t *initializer)
+{
+ switch (initializer->kind) {
+ case INITIALIZER_STRING:
+ case INITIALIZER_WIDE_STRING:
+ case INITIALIZER_DESIGNATOR:
+ return true;
+
+ case INITIALIZER_VALUE:
+ return is_constant_expression(initializer->value.value);
+
+ case INITIALIZER_LIST:
+ for (size_t i = 0; i < initializer->list.len; ++i) {
+ initializer_t *sub_initializer = initializer->list.initializers[i];
+ if (!is_constant_initializer(sub_initializer))
+ return false;
+ }
+ return true;
+ }
+ panic("invalid initializer kind found");
+}
+
+static bool is_object_with_linker_constant_address(const expression_t *expression)
+{
+ switch (expression->kind) {
+ case EXPR_UNARY_DEREFERENCE:
+ return is_address_constant(expression->unary.value);
+
+ case EXPR_SELECT: {
+ type_t *base_type = skip_typeref(expression->select.compound->base.type);
+ if (is_type_pointer(base_type)) {
+ /* it's a -> */
+ return is_address_constant(expression->select.compound);
+ } else {
+ return is_object_with_linker_constant_address(expression->select.compound);
+ }
+ }
+
+ case EXPR_ARRAY_ACCESS:
+ return is_constant_expression(expression->array_access.index)
+ && is_address_constant(expression->array_access.array_ref);
+
+ case EXPR_REFERENCE: {
+ entity_t *entity = expression->reference.entity;
+ if (is_declaration(entity)) {
+ switch ((storage_class_tag_t)entity->declaration.storage_class) {
+ case STORAGE_CLASS_NONE:
+ case STORAGE_CLASS_EXTERN:
+ case STORAGE_CLASS_STATIC:
+ return
+ entity->kind != ENTITY_VARIABLE ||
+ !entity->variable.thread_local;
+
+ case STORAGE_CLASS_REGISTER:
+ case STORAGE_CLASS_TYPEDEF:
+ case STORAGE_CLASS_AUTO:
+ break;
+ }
+ }
+ return false;
+ }
+
+ default:
+ return false;
+ }
+}
+
+bool is_address_constant(const expression_t *expression)
+{
+ switch (expression->kind) {
+ case EXPR_UNARY_TAKE_ADDRESS:
+ return is_object_with_linker_constant_address(expression->unary.value);
+
+ case EXPR_UNARY_DEREFERENCE: {
+ type_t *real_type
+ = revert_automatic_type_conversion(expression->unary.value);
+ /* dereferencing a function is a NOP */
+ if (is_type_function(real_type)) {
+ return is_address_constant(expression->unary.value);
+ }
+ /* FALLTHROUGH */
+ }
+
+ case EXPR_UNARY_CAST: {
+ type_t *dest = skip_typeref(expression->base.type);
+ if (!is_type_pointer(dest) && (
+ dest->kind != TYPE_ATOMIC ||
+ !(get_atomic_type_flags(dest->atomic.akind) & ATOMIC_TYPE_FLAG_INTEGER) ||
+ get_atomic_type_size(dest->atomic.akind) < get_atomic_type_size(get_intptr_kind())
+ ))
+ return false;
+
+ return (is_constant_expression(expression->unary.value)
+ || is_address_constant(expression->unary.value));
+ }
+
+ case EXPR_BINARY_ADD:
+ case EXPR_BINARY_SUB: {
+ expression_t *left = expression->binary.left;
+ expression_t *right = expression->binary.right;
+
+ if (is_type_pointer(skip_typeref(left->base.type))) {
+ return is_address_constant(left) && is_constant_expression(right);
+ } else if (is_type_pointer(skip_typeref(right->base.type))) {
+ return is_constant_expression(left) && is_address_constant(right);
+ }
+
+ return false;
+ }
+
+ case EXPR_REFERENCE: {
+ entity_t *entity = expression->reference.entity;
+ if (!is_declaration(entity))
+ return false;
+
+ type_t *type = skip_typeref(entity->declaration.type);
+ if (is_type_function(type))
+ return true;
+ if (is_type_array(type)) {
+ return is_object_with_linker_constant_address(expression);
+ }
+ /* Prevent stray errors */
+ if (!is_type_valid(type))
+ return true;
+ return false;
+ }
+
+ case EXPR_ARRAY_ACCESS: {
+ type_t *const type =
+ skip_typeref(revert_automatic_type_conversion(expression));
+ return
+ is_type_array(type) &&
+ is_constant_expression(expression->array_access.index) &&
+ is_address_constant(expression->array_access.array_ref);
+ }
+
+ default:
+ return false;
+ }
+}
+
+/**
+ * Check if the given expression is a call to a builtin function
+ * returning a constant result.
+ */
+static bool is_builtin_const_call(const expression_t *expression)
+{
+ expression_t *function = expression->call.function;
+ if (function->kind != EXPR_REFERENCE)
+ return false;
+ reference_expression_t *ref = &function->reference;
+ if (ref->entity->kind != ENTITY_FUNCTION)
+ return false;
+
+ switch (ref->entity->function.btk) {
+ case bk_gnu_builtin_huge_val:
+ case bk_gnu_builtin_inf:
+ case bk_gnu_builtin_inff:
+ case bk_gnu_builtin_infl:
+ case bk_gnu_builtin_nan:
+ case bk_gnu_builtin_nanf:
+ case bk_gnu_builtin_nanl:
+ return true;
+ default:
+ return false;
+ }
+
+}
+
+static bool is_constant_pointer(const expression_t *expression)
+{
+ if (is_constant_expression(expression))
+ return true;
+
+ switch (expression->kind) {
+ case EXPR_UNARY_CAST:
+ return is_constant_pointer(expression->unary.value);
+ default:
+ return false;
+ }
+}
+
+static bool is_object_with_constant_address(const expression_t *expression)
+{
+ switch (expression->kind) {
+ case EXPR_SELECT: {
+ expression_t *compound = expression->select.compound;
+ type_t *compound_type = compound->base.type;
+ compound_type = skip_typeref(compound_type);
+ if (is_type_pointer(compound_type)) {
+ return is_constant_pointer(compound);
+ } else {
+ return is_object_with_constant_address(compound);
+ }
+ }
+
+ case EXPR_ARRAY_ACCESS: {
+ array_access_expression_t const* const array_access =
+ &expression->array_access;
+ return
+ is_constant_expression(array_access->index) && (
+ is_object_with_constant_address(array_access->array_ref) ||
+ is_constant_pointer(array_access->array_ref)
+ );
+ }
+
+ case EXPR_UNARY_DEREFERENCE:
+ return is_constant_pointer(expression->unary.value);
+ default:
+ return false;
+ }
+}
+
+bool is_constant_expression(const expression_t *expression)
+{
+ switch (expression->kind) {
+
+ case EXPR_CONST:
+ case EXPR_CHARACTER_CONSTANT:
+ case EXPR_WIDE_CHARACTER_CONSTANT:
+ case EXPR_STRING_LITERAL:
+ case EXPR_WIDE_STRING_LITERAL:
+ case EXPR_CLASSIFY_TYPE:
+ case EXPR_FUNCNAME:
+ case EXPR_OFFSETOF:
+ case EXPR_ALIGNOF:
+ case EXPR_BUILTIN_CONSTANT_P:
+ case EXPR_BUILTIN_TYPES_COMPATIBLE_P:
+ case EXPR_LABEL_ADDRESS:
+ case EXPR_REFERENCE_ENUM_VALUE:
+ return true;
+
+ case EXPR_SIZEOF: {
+ type_t *type = expression->typeprop.type;
+ if (type == NULL)
+ type = expression->typeprop.tp_expression->base.type;
+
+ type = skip_typeref(type);
+ if (is_type_array(type) && type->array.is_vla)
+ return false;
+ return true;
+ }
- declaration = declaration->next;
+ case EXPR_SELECT:
+ case EXPR_VA_START:
+ case EXPR_VA_ARG:
+ case EXPR_STATEMENT:
+ case EXPR_REFERENCE:
+ case EXPR_UNARY_POSTFIX_INCREMENT:
+ case EXPR_UNARY_POSTFIX_DECREMENT:
+ case EXPR_UNARY_PREFIX_INCREMENT:
+ case EXPR_UNARY_PREFIX_DECREMENT:
+ case EXPR_UNARY_ASSUME: /* has VOID type */
+ case EXPR_UNARY_DEREFERENCE:
+ case EXPR_UNARY_DELETE:
+ case EXPR_UNARY_DELETE_ARRAY:
+ case EXPR_UNARY_THROW:
+ case EXPR_BINARY_ASSIGN:
+ case EXPR_BINARY_MUL_ASSIGN:
+ case EXPR_BINARY_DIV_ASSIGN:
+ case EXPR_BINARY_MOD_ASSIGN:
+ case EXPR_BINARY_ADD_ASSIGN:
+ case EXPR_BINARY_SUB_ASSIGN:
+ case EXPR_BINARY_SHIFTLEFT_ASSIGN:
+ case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
+ case EXPR_BINARY_BITWISE_AND_ASSIGN:
+ case EXPR_BINARY_BITWISE_XOR_ASSIGN:
+ case EXPR_BINARY_BITWISE_OR_ASSIGN:
+ case EXPR_BINARY_COMMA:
+ case EXPR_ARRAY_ACCESS:
+ return false;
+
+ case EXPR_UNARY_TAKE_ADDRESS:
+ return is_object_with_constant_address(expression->unary.value);
+
+ case EXPR_CALL:
+ return is_builtin_const_call(expression);
+
+ case EXPR_UNARY_NEGATE:
+ case EXPR_UNARY_PLUS:
+ case EXPR_UNARY_BITWISE_NEGATE:
+ case EXPR_UNARY_NOT:
+ return is_constant_expression(expression->unary.value);
+
+ case EXPR_UNARY_CAST:
+ case EXPR_UNARY_CAST_IMPLICIT:
+ return is_type_arithmetic(skip_typeref(expression->base.type))
+ && is_constant_expression(expression->unary.value);
+
+ case EXPR_BINARY_ADD:
+ case EXPR_BINARY_SUB:
+ case EXPR_BINARY_MUL:
+ case EXPR_BINARY_DIV:
+ case EXPR_BINARY_MOD:
+ case EXPR_BINARY_EQUAL:
+ case EXPR_BINARY_NOTEQUAL:
+ case EXPR_BINARY_LESS:
+ case EXPR_BINARY_LESSEQUAL:
+ case EXPR_BINARY_GREATER:
+ case EXPR_BINARY_GREATEREQUAL:
+ case EXPR_BINARY_BITWISE_AND:
+ case EXPR_BINARY_BITWISE_OR:
+ case EXPR_BINARY_BITWISE_XOR:
+ case EXPR_BINARY_SHIFTLEFT:
+ case EXPR_BINARY_SHIFTRIGHT:
+ case EXPR_BINARY_ISGREATER:
+ case EXPR_BINARY_ISGREATEREQUAL:
+ case EXPR_BINARY_ISLESS:
+ case EXPR_BINARY_ISLESSEQUAL:
+ case EXPR_BINARY_ISLESSGREATER:
+ case EXPR_BINARY_ISUNORDERED:
+ return is_constant_expression(expression->binary.left)
+ && is_constant_expression(expression->binary.right);
+
+ case EXPR_BINARY_LOGICAL_AND: {
+ expression_t const *const left = expression->binary.left;
+ if (!is_constant_expression(left))
+ return false;
+ if (fold_constant(left) == 0)
+ return true;
+ return is_constant_expression(expression->binary.right);
+ }
+
+ case EXPR_BINARY_LOGICAL_OR: {
+ expression_t const *const left = expression->binary.left;
+ if (!is_constant_expression(left))
+ return false;
+ if (fold_constant(left) != 0)
+ return true;
+ return is_constant_expression(expression->binary.right);
+ }
+
+ case EXPR_COMPOUND_LITERAL:
+ return is_constant_initializer(expression->compound_literal.initializer);
+
+ case EXPR_CONDITIONAL: {
+ expression_t *condition = expression->conditional.condition;
+ if (!is_constant_expression(condition))
+ return false;
+
+ long val = fold_constant(condition);
+ if (val != 0) {
+ expression_t const *const t = expression->conditional.true_expression;
+ return t == NULL || is_constant_expression(t);
+ } else {
+ return is_constant_expression(expression->conditional.false_expression);
+ }
+ }
+
+ case EXPR_INVALID:
+ return true;
+
+ case EXPR_UNKNOWN:
+ break;
}
+ panic("invalid expression found (is constant expression)");
}
+/**
+ * Initialize the AST construction.
+ */
void init_ast(void)
{
obstack_init(&ast_obstack);
}
+/**
+ * Free the AST.
+ */
void exit_ast(void)
{
obstack_free(&ast_obstack, NULL);
}
+/**
+ * Set the output stream for the AST printer.
+ *
+ * @param stream the output stream
+ */
void ast_set_output(FILE *stream)
{
out = stream;
type_set_output(stream);
}
-void* (allocate_ast) (size_t size)
+/**
+ * Allocate an AST object of the given size.
+ *
+ * @param size the size of the object to allocate
+ *
+ * @return A new allocated object in the AST memeory space.
+ */
+void *(allocate_ast)(size_t size)
{
return _allocate_ast(size);
}
projects / cparser / blobdiff