libcdecl: Use an explicit name for T_LEX_ERROR.

[cdecl99.git] / src / parse.y

diff --git a/src/parse.y b/src/parse.y
index 3a17b998babf5cabc1bc5cfb6e76278304da74f8..6f3b3044584c4cf8ccf3a4be8f13d0bdf6e798d8 100644 (file)
--- a/src/parse.y
+++ b/src/parse.y
@@ -32,7 +32,6 @@
 #include <stdbool.h>
 
 #include "scan.h"
-#include "cdecl.h"
 #include "cdecl-internal.h"
 #include "errmsg.h"
 
@@ -66,10 +65,14 @@
 #define ALLOC_ITEM_DECLSPEC(ptr)   ALLOC_ITEM(ptr, declspec, next)
 #define ALLOC_ITEM_DECL(ptr)       ALLOC_ITEM(ptr, decl, next)
 
-#define ALLOC_FUNCTION(ptr, parameters_, variadic_) do { \
+#define ALLOC_FUNCTION_(ptr, parameters_) do { \
        ALLOC_ITEM_DECLARATOR(ptr); \
        (ptr)->type = CDECL_DECL_FUNCTION; \
        (ptr)->u.function.parameters = parameters_; \
+} while (0)
+
+#define ALLOC_FUNCTION(ptr, parameters_, variadic_) do { \
+       ALLOC_FUNCTION_(ptr, parameters_); \
        (ptr)->u.function.variadic = variadic_; \
 } while (0)
 
@@ -104,18 +107,13 @@
  * name strings can be used directly in error messages and there is no
  * need for any string processing.
  */
-#define yytnamerr(a, b) ( (a) ? yytnamerr_copy(a, b) \
-                              : strlen(b) )
-
-static size_t yytnamerr_copy(char *dst, const char *src)
-{
-       return cdecl__strlcpy(dst, src, strlen(src)+1);
-}
+#define yytnamerr(a, b) ( (a) ? cdecl__strlcpy(a, b, -1) : strlen(b) )
 %}
 
 %code requires {
 #include <inttypes.h>
 #include <stdbool.h>
+#include "cdecl.h"
 }
 
 %code provides {
@@ -125,7 +123,7 @@ const char *cdecl__token_name(unsigned token);
 }
 
 %union {
-       uintmax_t uintval;
+       cdecl_uintmax uintval;
        unsigned spectype;
        bool boolval;
        struct cdecl_declspec *declspec;
@@ -226,11 +224,29 @@ static struct cdecl_declspec *join_specs3(struct cdecl_declspec *a,
        return b;
 }
 
+/*
+ * Reverse the order of a "struct cdecl" list, and return the new first
+ * element of the list (i.e., the last element of the original list).
+ */
+static struct cdecl *reverse_decls(struct cdecl *decl)
+{
+       struct cdecl *prev, *next;
+
+       for (prev = NULL; decl; decl = next) {
+               next = decl->next;
+               decl->next = prev;
+               prev = decl;
+       }
+
+       return prev;
+}
+
 /*
  * Alter an abstract declarator (type name) to declare an identifier instead,
  * used by the English parser rules to reduce "identifier as type" sequences.
  */
-static struct cdecl *insert_identifier(struct cdecl *decl, struct parse_item *ident)
+static struct cdecl *
+insert_identifier(struct cdecl *decl, struct parse_item *ident)
 {
        struct cdecl_declarator *d, **p = &decl->declarators;
 
@@ -256,7 +272,7 @@ static struct cdecl_declarator *nulldecl(void)
 %destructor { free_decl($$); }       <decl>
 
 /* Magic tokens */
-%token T_LEX_ERROR
+%token T_LEX_ERROR "@@@"
 
 %token <item>    T_IDENT "identifier"
 %token <uintval> T_UINT  "integer constant"
@@ -343,7 +359,7 @@ cdecl: english | declaration
 
 semi: | T_SEMICOLON
 declaration: declspecs declarators semi {
-       $$ = $2;
+       $$ = reverse_decls($2);
        $$->specifiers = $1;
 };
 
@@ -382,9 +398,9 @@ qualifiers: { $$ = NULL; } | qualifiers qualifier {
        $$->next = $1;
 }
 
-declarators: declarator_wrap | declarator_wrap T_COMMA declarators {
-       $$ = $1;
-       $$->next = $3;
+declarators: declarator_wrap | declarators T_COMMA declarator_wrap {
+       $$ = $3;
+       $$->next = $1;
 }
 
 declarator_wrap: declarator {
@@ -452,21 +468,23 @@ parameter: declspecs declarator {
 
 varargs: { $$ = false; } | T_COMMA T_ELLIPSIS { $$ = true; }
 
-parameter_type_list: parameter varargs {
-       ALLOC_FUNCTION($$, $1, $2);
-} | parameter T_COMMA parameter_type_list {
-       $$ = $3;
-       $1->next = $$->u.function.parameters;
-       $$->u.function.parameters = $1;
+parameter_type_list: parameter {
+       ALLOC_FUNCTION_($$, $1);
+} | parameter_type_list T_COMMA parameter {
+       $$ = $1;
+       $3->next = $$->u.function.parameters;
+       $$->u.function.parameters = $3;
 }
 
-parens: T_LPAREN parameter_type_list T_RPAREN {
+parens: T_LPAREN parameter_type_list varargs T_RPAREN {
+       $2->u.function.parameters = reverse_decls($2->u.function.parameters);
+       $2->u.function.variadic = $3;
        $$ = $2;
 } | T_LPAREN declarator_ish T_RPAREN {
        struct cdecl *fake_params;
 
        ALLOC_DECL(fake_params, NULL, $2);
-       ALLOC_FUNCTION($$, fake_params, false);
+       ALLOC_FUNCTION_($$, fake_params);
 }
 
 pointer: T_ASTERISK qualifiers direct_declarator {
@@ -546,16 +564,18 @@ english_declarator: {
 
 english_function: T_FUNCTION T_RETURNING {
        ALLOC_FUNCTION($$, NULL, false);
-} | T_FUNCTION T_LPAREN english_parameter_list T_RPAREN T_RETURNING {
+} | T_FUNCTION T_LPAREN english_parameter_list varargs T_RPAREN T_RETURNING {
+       $3->u.function.parameters = reverse_decls($3->u.function.parameters);
+       $3->u.function.variadic = $4;
        $$ = $3;
 }
 
-english_parameter_list: english_parameter varargs {
-       ALLOC_FUNCTION($$, $1, $2);
-} | english_parameter T_COMMA english_parameter_list {
-       $$ = $3;
-       $1->next = $$->u.function.parameters;
-       $$->u.function.parameters = $1;
+english_parameter_list: english_parameter {
+       ALLOC_FUNCTION_($$, $1);
+} | english_parameter_list T_COMMA english_parameter {
+       $$ = $1;
+       $3->next = $$->u.function.parameters;
+       $$->u.function.parameters = $3;
 }
 
 typedef_name_qual: T_IDENT qualifiers {