cppinit.c (lang_defaults): New table.

	* cppinit.c (lang_defaults): New table.
	(set_lang): Just read from lang_defaults into the live options
	structure.

From-SVN: r43699

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ebaf3f544d055dabd13f80457c0b7aa374a02a36..ec3252cfbb3ec49161d9a050c40a9d54faaabbff 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2001-07-02  Zack Weinberg  <zackw@stanford.edu>
+
+       * cppinit.c (lang_defaults): New table.
+       (set_lang): Just read from lang_defaults into the live options
+       structure.
+
 2001-07-02  Zack Weinberg  <zackw@stanford.edu>
 
        * Makefile.in (doc): Depend on $(GENERATED_MANPAGES).

diff --git a/gcc/cppinit.c b/gcc/cppinit.c
index 0d3d3a0d634e27466c7a0893e99831c00fe3576b..3c446b2798914555eae2ae9edca1a5a314acca4f 100644 (file)
--- a/gcc/cppinit.c
+++ b/gcc/cppinit.c
@@ -370,85 +370,51 @@ merge_include_chains (pfile)
 
 /* Sets internal flags correctly for a given language, and defines
    macros if necessary.  */
+
+struct lang_flags
+{
+  char c99;
+  char objc;
+  char cplusplus;
+  char extended_numbers;
+  char trigraphs;
+  char dollars_in_ident;
+  char cplusplus_comments;
+  char digraphs;
+};
+
+/* ??? Enable $ in identifiers in assembly? */
+static const struct lang_flags lang_defaults[] =
+{ /*              c99 objc c++ xnum trig dollar c++comm digr  */
+  /* GNUC89 */  { 0,  0,   0,  1,   0,   1,     1,      1     },
+  /* GNUC99 */  { 1,  0,   0,  1,   0,   1,     1,      1     },
+  /* STDC89 */  { 0,  0,   0,  0,   1,   0,     0,      0     },
+  /* STDC94 */  { 0,  0,   0,  0,   1,   0,     0,      1     },
+  /* STDC99 */  { 1,  0,   0,  1,   1,   0,     1,      1     },
+  /* GNUCXX */  { 0,  0,   1,  1,   0,   1,     1,      1     },
+  /* CXX98  */  { 0,  0,   1,  1,   1,   0,     1,      1     },
+  /* OBJC   */  { 0,  1,   0,  1,   0,   1,     1,      1     },
+  /* OBJCXX */  { 0,  1,   1,  1,   0,   1,     1,      1     },
+  /* ASM    */  { 0,  0,   0,  1,   0,   0,     1,      0     }
+};
+
 static void
 set_lang (pfile, lang)
      cpp_reader *pfile;
      enum c_lang lang;
 {
-  /* Defaults.  */
+  const struct lang_flags *l = &lang_defaults[(int) lang];
+  
   CPP_OPTION (pfile, lang) = lang;
-  CPP_OPTION (pfile, objc) = 0;
-  CPP_OPTION (pfile, cplusplus) = 0;
-  CPP_OPTION (pfile, extended_numbers) = 1; /* Allowed in GNU C and C99.  */
-
-  switch (lang)
-    {
-      /* GNU C.  */
-    case CLK_GNUC99:
-      CPP_OPTION (pfile, trigraphs) = 0;
-      CPP_OPTION (pfile, dollars_in_ident) = 1;
-      CPP_OPTION (pfile, cplusplus_comments) = 1;
-      CPP_OPTION (pfile, digraphs) = 1;
-      CPP_OPTION (pfile, c99) = 1;
-      break;
-    case CLK_GNUC89:
-      CPP_OPTION (pfile, trigraphs) = 0;
-      CPP_OPTION (pfile, dollars_in_ident) = 1;
-      CPP_OPTION (pfile, cplusplus_comments) = 1;
-      CPP_OPTION (pfile, digraphs) = 1;
-      CPP_OPTION (pfile, c99) = 0;
-      break;
 
-      /* ISO C.  */
-    case CLK_STDC94:
-    case CLK_STDC89:
-      CPP_OPTION (pfile, trigraphs) = 1;
-      CPP_OPTION (pfile, dollars_in_ident) = 0;
-      CPP_OPTION (pfile, cplusplus_comments) = 0;
-      CPP_OPTION (pfile, digraphs) = lang == CLK_STDC94;
-      CPP_OPTION (pfile, c99) = 0;
-      CPP_OPTION (pfile, extended_numbers) = 0;
-      break;
-    case CLK_STDC99:
-      CPP_OPTION (pfile, trigraphs) = 1;
-      CPP_OPTION (pfile, dollars_in_ident) = 0;
-      CPP_OPTION (pfile, cplusplus_comments) = 1;
-      CPP_OPTION (pfile, digraphs) = 1;
-      CPP_OPTION (pfile, c99) = 1;
-      break;
-
-      /* Objective C.  */
-    case CLK_OBJCXX:
-      CPP_OPTION (pfile, cplusplus) = 1;
-    case CLK_OBJC:
-      CPP_OPTION (pfile, trigraphs) = 0;
-      CPP_OPTION (pfile, dollars_in_ident) = 1;
-      CPP_OPTION (pfile, cplusplus_comments) = 1;
-      CPP_OPTION (pfile, digraphs) = 1;
-      CPP_OPTION (pfile, c99) = 0;
-      CPP_OPTION (pfile, objc) = 1;
-      break;
-
-      /* C++.  */
-    case CLK_GNUCXX:
-    case CLK_CXX98:
-      CPP_OPTION (pfile, cplusplus) = 1;
-      CPP_OPTION (pfile, trigraphs) = lang == CLK_CXX98;
-      CPP_OPTION (pfile, dollars_in_ident) = lang == CLK_GNUCXX;
-      CPP_OPTION (pfile, cplusplus_comments) = 1;
-      CPP_OPTION (pfile, digraphs) = 1;
-      CPP_OPTION (pfile, c99) = 0;
-      break;
-
-      /* Assembler.  */
-    case CLK_ASM:
-      CPP_OPTION (pfile, trigraphs) = 0;
-      CPP_OPTION (pfile, dollars_in_ident) = 0;        /* Maybe not?  */
-      CPP_OPTION (pfile, cplusplus_comments) = 1;
-      CPP_OPTION (pfile, digraphs) = 0; 
-      CPP_OPTION (pfile, c99) = 0;
-      break;
-    }
+  CPP_OPTION (pfile, c99)               = l->c99;
+  CPP_OPTION (pfile, objc)              = l->objc;
+  CPP_OPTION (pfile, cplusplus)                 = l->cplusplus;
+  CPP_OPTION (pfile, extended_numbers)  = l->extended_numbers;
+  CPP_OPTION (pfile, trigraphs)                 = l->trigraphs;
+  CPP_OPTION (pfile, dollars_in_ident)  = l->dollars_in_ident;
+  CPP_OPTION (pfile, cplusplus_comments) = l->cplusplus_comments;
+  CPP_OPTION (pfile, digraphs)          = l->digraphs;
 }
 
 #ifdef HOST_EBCDIC