Update the preprocessor code

From: Michael Meskes <meskes@topsystem.de>

Update the preprocessor code
From: Michael Meskes <meskes@topsystem.de>
74e01591 · Marc G. Fournier · 922ea913 · 74e01591 · 74e01591 · 74e01591
Commit 74e01591 authored Feb 18, 1998 by Marc G. Fournier
4 changed files
--- a/src/interfaces/ecpg/ChangeLog
+++ b/src/interfaces/ecpg/ChangeLog
@@ -8,8 +8,11 @@ Wed Feb 11 10:58:13 CET 1998

 Thu Feb 12 14:45:07 CET 1998

-	- Changed parser to correctly handle local variables.
-        - Allow static and extern variable definitions.
+	- changed parser to correctly handle local variables.
+
+Thu Feb 12 15:55:37 CET 1998
+
+	- allow static and extern variable definitions.
 	- free() variable structure completely.

 Fri Feb 13 12:35:58 CET 1998
@@ -20,6 +23,9 @@ Fri Feb 13 12:35:58 CET 1998

 Fre Feb 13 14:12:41 CET 1998

-      - Structure now work completely.
+	- struct definitions now work completely.

+Mon Feb 16 16:17:21 CET 1998

+	- enable initialisation in declare section.
+	- connect call accepts a variable as well. 
--- a/src/interfaces/ecpg/preproc/Makefile
+++ b/src/interfaces/ecpg/preproc/Makefile
@@ -2,16 +2,16 @@
 SRCDIR= ../../..
 include $(SRCDIR)/Makefile.global

-MAJOR_VERSION=0
-MINOR_VERSION=5
-PATCHLEVEL=1
+MAJOR_VERSION=1
+MINOR_VERSION=0
+PATCHLEVEL=0

 CFLAGS=-I../include -O2 -g -Wall -DMAJOR_VERSION=$(MAJOR_VERSION) -DMINOR_VERSION=$(MINOR_VERSION) -DPATCHLEVEL=$(PATCHLEVEL)

 all:: ecpg

 clean:
-	rm -f *.o core a.out ecpg preproc.tab.h y.tab.c *~
+	rm -f *.o core a.out ecpg y.tab.h y.tab.c *~

 install: all
 	install -c -m 755 ecpg $(DESTDIR)$(BINDIR)

--- a/src/interfaces/ecpg/preproc/pgc.l
+++ b/src/interfaces/ecpg/preproc/pgc.l
@@ -18,6 +18,7 @@ symbol	{letter}({letter}|{digit})*
 string	'[^']*'

 exec	[eE][xX][eE][cC]
+execute	[eE][xX][eE][cC][uU][tT][eE]
 sql	[sS][qQ][lL]
 varchar	[vV][aA][rR][cC][hH][aA][rR]
 varchar2	[vV][aA][rR][cC][hH][aA][rR]2
@@ -30,18 +31,25 @@ include [iI][nN][cC][lL][uU][dD][eE]
 connect [cC][oO][nN][nN][eE][cC][tT]
 open	[oO][pP][eE][nN]
 commit  [cC][oO][mM][mM][iI][tT]
+immediate [iI][mM][mM][eE][dD][iI][aA][tT][eE]
+release [rR][eE][lL][eE][aA][sS][eE]
 rollback [rR][oO][lL][lL][bB][aA][cC][kK]
+work    [wW][oO][rR][kK]
 %%
 <C>{exec}{ws}{sql}	{ BEGIN SQL; dbg(SQL_START); return SQL_START; }
 <SQL>";"		{ BEGIN C; dbg(SQL_SEMI); return SQL_SEMI; }
 <SQL>{begin}		{ dbg(SQL_BEGIN); return SQL_BEGIN; }
 <SQL>{end}		{ dbg(SQL_END); return SQL_END; }
 <SQL>{declare}		{ dbg(SQL_DECLARE); return SQL_DECLARE; }
+<SQL>{execute}		{ dbg(SQL_EXECUTE); return SQL_EXECUTE; }
+<SQL>{immediate}	{ dbg(SQL_IMMEDIATE); return SQL_IMMEDIATE; }
 <SQL>{section}		{ dbg(SQL_SECTION); return SQL_SECTION; }
 <SQL>{include}		{ dbg(SQL_INCLUDE); return SQL_INCLUDE; }
 <SQL>{connect}		{ dbg(SQL_CONNECT); return SQL_CONNECT; }
 <SQL>{open}		{ dbg(SQL_OPEN); return SQL_OPEN; }
 <SQL>{commit}		{ dbg(SQL_COMMIT); return SQL_COMMIT; }
+<SQL>{release}		{ dbg(SQL_RELEASE); return SQL_RELEASE; }
+<SQL>{work}		{ dbg(SQL_WORK); return SQL_WORK; }
 <SQL>{rollback}		{ dbg(SQL_ROLLBACK); return SQL_ROLLBACK; }

 <SQL>{into}		{ dbg(SQL_INTO); return SQL_INTO; }
@@ -104,9 +112,11 @@ struct			{ dbg(S_STRUCT); return S_STRUCT; }
 "["			{ dbg([); return '['; }
 "]"			{ dbg(]); return ']'; }
 ";"			{ dbg(;); return ';'; }
+"="			{ dbg(=); return '='; }
 ","			{ dbg(komma); return ','; }
 \{			{ dbg(blockstart); return '{'; }
 \}			{ dbg(blockend); return'}'; }
+\*			{ dbg(*); return('*'); }

 <SQL>":"		{ dbg(:); return ':'; }


--- a/src/interfaces/ecpg/preproc/preproc.y
+++ b/src/interfaces/ecpg/preproc/preproc.y
@@ -180,22 +180,22 @@ dump_variables(struct arguments * list)

 %token <tagname> SQL_START SQL_SEMI SQL_STRING SQL_INTO
 %token <tagname> SQL_BEGIN SQL_END SQL_DECLARE SQL_SECTION SQL_INCLUDE 
-%token <tagname> SQL_CONNECT SQL_OPEN
-%token <tagname> SQL_COMMIT SQL_ROLLBACK
+%token <tagname> SQL_CONNECT SQL_OPEN SQL_EXECUTE SQL_IMMEDIATE
+%token <tagname> SQL_COMMIT SQL_ROLLBACK SQL_RELEASE SQL_WORK

 %token <tagname> S_SYMBOL S_LENGTH S_ANYTHING
 %token <tagname> S_VARCHAR S_VARCHAR2
 %token <tagname> S_EXTERN S_STATIC S_AUTO S_CONST S_REGISTER S_STRUCT
 %token <tagname> S_UNSIGNED S_SIGNED
 %token <tagname> S_LONG S_SHORT S_INT S_CHAR S_FLOAT S_DOUBLE S_BOOL
-%token <tagname> '[' ']' ';' ',' '{' '}'
+%token <tagname> '[' ']' ';' ',' '{' '}' '=' '*'

 %type <type> type type_detailed varchar_type simple_type array_type struct_type
 %type <symbolname> symbol
-%type <tagname> maybe_storage_clause varchar_tag
+%type <tagname> maybe_storage_clause varchar_tag db_name
 %type <type_enum> simple_tag
 %type <indexsize> index length
-%type <tagname> canything sqlanything both_anything
+%type <tagname> canything sqlanything both_anything vartext commit_release


 %%
@@ -210,6 +210,7 @@ statement : sqldeclaration
 	  | sqlopen
 	  | sqlcommit
 	  | sqlrollback
+	  | sqlexecute
 	  | sqlstatement
 	  | cthing
 	  | blockstart
@@ -222,17 +223,18 @@ sqldeclaration : sql_startdeclare
 sql_startdeclare : SQL_START SQL_BEGIN SQL_DECLARE SQL_SECTION SQL_SEMI	{
    fprintf(yyout, "/* exec sql begin declare section */\n"); 
    output_line_number();
-};
+}
+
 sql_enddeclare : SQL_START SQL_END SQL_DECLARE SQL_SECTION SQL_SEMI {
    fprintf(yyout,"/* exec sql end declare section */\n"); 
    output_line_number();
-};
+}

 variable_declarations : /* empty */
-		      | variable_declarations variable_declaration ;
+		      | variable_declarations variable_declaration;

 /* Here is where we can enter support for typedef. */
-variable_declaration : type ';'	{ 
+variable_declaration : type initializer ';'	{ 
    /* don't worry about our list when we're working on a struct */
    if (struct_level == 0)
    {
@@ -242,6 +244,12 @@ variable_declaration : type ';'	{
    fprintf(yyout, ";"); 
 }

+initializer : /*empty */
+	    | '=' {fwrite(yytext, yyleng, 1, yyout);} vartext;
+
+vartext : both_anything {fwrite(yytext, yyleng, 1, yyout);}
+	| vartext both_anything {fwrite(yytext, yyleng, 1, yyout);}
+
 symbol : S_SYMBOL { 
    char * name = (char *)malloc(yyleng + 1);

@@ -255,9 +263,13 @@ type : maybe_storage_clause type_detailed { $<type>$ = $<type>2; };
 type_detailed : varchar_type { $<type>$ = $<type>1; }
 	      | simple_type { $<type>$ = $<type>1; }
 	      | array_type {$<type>$ = $<type>1; }
+	      | pointer_type {$<type>$ = $<type>1; }
 	      | struct_type {$<type>$ = $<type>1; };

 varchar_type : varchar_tag symbol index {
+    if ($<indexsize>3 > 0)
+	fprintf(yyout, "struct varchar_%s { int len; char arr[%d]; } %s", $<symbolname>2, $<indexsize>3, $<symbolname>2);
+    else
 	fprintf(yyout, "struct varchar_%s { int len; char arr[%d]; } %s", $<symbolname>2, $<indexsize>3, $<symbolname>2);
    if (struct_level == 0)
    {
@@ -283,7 +295,10 @@ simple_type : simple_tag symbol {
 }

 array_type : simple_tag symbol index {
+    if ($<indexsize>3 > 0)
 	    fprintf(yyout, "%s %s [%d]", ECPGtype_name($<type_enum>1), $<symbolname>2, $<indexsize>3);
+    else
+	    fprintf(yyout, "%s %s []", ECPGtype_name($<type_enum>1), $<symbolname>2);
    if (struct_level == 0)
    {
 	$<type>$.name = $<symbolname>2;
@@ -293,6 +308,17 @@ array_type : simple_tag symbol index {
 	ECPGmake_record_member($<symbolname>2, ECPGmake_array_type(ECPGmake_simple_type($<type_enum>1), $<indexsize>3), &(record_member_list[struct_level-1]));
 }

+pointer_type : simple_tag '*' symbol {
+    fprintf(yyout, "%s * %s", ECPGtype_name($<type_enum>1), $<symbolname>3);
+    if (struct_level == 0)
+    {
+	$<type>$.name = $<symbolname>3;
+	$<type>$.typ = ECPGmake_array_type(ECPGmake_simple_type($<type_enum>1), 0);
+    }
+    else
+	ECPGmake_record_member($<symbolname>3, ECPGmake_array_type(ECPGmake_simple_type($<type_enum>1), 0), &(record_member_list[struct_level-1]));
+}
+
 s_struct : S_STRUCT symbol {
    struct_level++;
    fprintf(yyout, "struct %s {", $<symbolname>2);
@@ -330,9 +356,8 @@ maybe_storage_clause : S_EXTERN { fwrite(yytext, yyleng, 1, yyout); }
 		       | S_AUTO { fwrite(yytext, yyleng, 1, yyout); }
                       | /* empty */ { };
  	 
-index : '[' length ']' {
-    $<indexsize>$ = $<indexsize>2; 
-};
+index : '[' length ']' { $<indexsize>$ = $<indexsize>2; }
+	| '[' ']' { $<indexsize>$ = 0; }

 length : S_LENGTH { $<indexsize>$ = atoi(yytext); }

@@ -342,9 +367,24 @@ sqlinclude : SQL_START SQL_INCLUDE { fprintf(yyout, "#include \""); }
 filename : cthing
 	 | filename cthing;

-sqlconnect : SQL_START SQL_CONNECT { fprintf(yyout, "ECPGconnect(\""); }
-	SQL_STRING { fwrite(yytext + 1, yyleng - 2, 1, yyout); }
-	SQL_SEMI { fprintf(yyout, "\");"); output_line_number(); };
+sqlconnect : SQL_START SQL_CONNECT { fprintf(yyout, "ECPGconnect("); }
+	     db_name
+	     SQL_SEMI { fprintf(yyout, ");"); output_line_number();}
+
+db_name : SQL_STRING { fprintf(yyout, "\""); fwrite(yytext + 1, yyleng - 2, 1, yyout); fprintf(yyout, "\""); }
+	| ':' symbol { /* check if we have a char variabnle */
+			struct variable *p = find_variable($<symbolname>2);
+			enum ECPGttype typ = p->type->typ;
+
+			/* if array see what's inside */
+			if (typ == ECPGt_array)
+				typ = p->type->u.element->typ;
+
+			if (typ != ECPGt_char && typ != ECPGt_unsigned_char)
+				yyerror("invalid datatype");
+
+			fprintf(yyout, "%s", $<symbolname>2);
+	}

 /* Open is an open cursor. Removed. */
 sqlopen : SQL_START SQL_OPEN sqlgarbage SQL_SEMI { output_line_number(); };
@@ -353,21 +393,37 @@ sqlgarbage : /* Empty */
 	   | sqlgarbage sqlanything;
 	    

-sqlcommit : SQL_START SQL_COMMIT SQL_SEMI {
+sqlcommit : SQL_START commit_release SQL_SEMI {
    fprintf(yyout, "ECPGcommit(__LINE__);"); 
    output_line_number();
-};
+}
+
+commit_release : SQL_COMMIT
+	       | SQL_COMMIT SQL_RELEASE
+	       | SQL_COMMIT SQL_WORK SQL_RELEASE;
+
 sqlrollback : SQL_START SQL_ROLLBACK SQL_SEMI {
    fprintf(yyout, "ECPGrollback(__LINE__);");
    output_line_number();
 };

+sqlexecute : SQL_START { /* Reset stack */
+    reset_variables();
+    fprintf(yyout, "ECPGdo(__LINE__, \"");
+} SQL_EXECUTE SQL_IMMEDIATE sqlstatement_words SQL_SEMI {  
+    /* Dump */
+    fprintf(yyout, "\", ");		   
+    dump_variables(argsinsert);
+    fprintf(yyout, "ECPGt_EOIT, ");
+    dump_variables(argsresult);
+    fprintf(yyout, "ECPGt_EORT );");
+    output_line_number();
+};
+
 sqlstatement : SQL_START { /* Reset stack */
    reset_variables();
    fprintf(yyout, "ECPGdo(__LINE__, \"");
-}
-               sqlstatement_words
-	       SQL_SEMI {  
+} sqlstatement_words SQL_SEMI {  
    /* Dump */
    fprintf(yyout, "\", ");		   
    dump_variables(argsinsert);
@@ -424,7 +480,7 @@ both_anything : S_LENGTH | S_VARCHAR | S_VARCHAR2
 	  | SQL_INCLUDE 
 	  | S_SYMBOL
 	  | S_STATIC | S_EXTERN | S_AUTO | S_CONST | S_REGISTER | S_STRUCT
-	  | '[' | ']' | ','
+	  | '[' | ']' | ',' | '=' | '*'
 	  | S_ANYTHING;

 blockstart : '{' {