X-Git-Url: https://git.draconx.ca/gitweb/gob-dx.git/blobdiff_plain/5b42e9400440d86723a27747b2191ab8cd59c2ee..3379dcdfd0872947d761053c61d773add94d38c2:/src/parse.y

diff --git a/src/parse.y b/src/parse.y
index e204c62..192e4c4 100644
--- a/src/parse.y
+++ b/src/parse.y
@@ -25,7 +25,7 @@
 #include <stdio.h>
 #include <string.h>
 
-#include "tree.h"
+#include "treefuncs.h"
 #include "main.h"
 #include "util.h"
 
@@ -50,6 +50,9 @@ static gboolean destructor_simple = TRUE;
 static char *initializer = NULL;
 static int initializer_line = 0;
 
+static char *onerror = NULL;
+static char *defreturn = NULL;
+
 static GList *gtktypes = NULL;
 
 /* this can be a global as we will only do one function at a time
@@ -113,9 +116,9 @@ push_variable(char *name, int scope, int line_no, char *postfix)
 }
 
 static void
-push_function(int scope, int method, char *oid, char *id, char *onerror,
-	      GString *cbuf, int line_no, int ccode_line, gboolean vararg,
-	      GList *flags)
+push_function(int scope, int method, char *oid, char *id,
+	      GString *cbuf, int line_no, int ccode_line,
+	      gboolean vararg, GList *flags)
 {
 	Node *node;
 	Type *type;
@@ -150,7 +153,7 @@ push_function(int scope, int method, char *oid, char *id, char *onerror,
 		c_cbuf = NULL;
 
 	node = new_method(scope, method, type, oid, gtktypes, flags,
-			  id, funcargs, onerror, c_cbuf, line_no,
+			  id, funcargs, onerror, defreturn, c_cbuf, line_no,
 			  ccode_line, vararg);
 
 	if(cbuf)
@@ -161,9 +164,28 @@ push_function(int scope, int method, char *oid, char *id, char *onerror,
 	gtktypes = NULL;
 	funcargs = NULL;
 
+	onerror = NULL;
+	defreturn = NULL;
+
 	class_nodes = g_list_append(class_nodes, node);
 }
 
+static void
+free_all_global_state(void)
+{
+	g_free(onerror);
+	onerror = NULL;
+	g_free(defreturn);
+	defreturn = NULL;
+
+	g_list_foreach(gtktypes, (GFunc)g_free, NULL);
+	g_list_free(gtktypes);
+	gtktypes = NULL;
+
+	free_node_list(funcargs);
+	funcargs = NULL;
+}
+
 static void
 push_funcarg(char *name, char *postfix)
 {
@@ -172,7 +194,7 @@ push_funcarg(char *name, char *postfix)
 
 	type->postfix = postfix;
 	
-	node = new_funcarg(type,name,checks);
+	node = new_funcarg(type, name, checks);
 	checks = NULL;
 	
 	funcargs = g_list_append(funcargs, node);
@@ -231,6 +253,25 @@ find_var_or_die(const char *id, int line)
 	return NULL;
 }
 
+static gboolean
+set_return_value(char *type, char *val)
+{
+	if(strcmp(type, "onerror")==0) {
+		if(!onerror) {
+			onerror = val;
+			return TRUE;
+		} else
+			return FALSE;
+	} else if(strcmp(type, "defreturn")==0) {
+		if(!defreturn) {
+			defreturn = val;
+			return TRUE;
+		} else
+			return FALSE;
+	}
+	return FALSE;
+}
+
 %}
 
 %union {
@@ -244,7 +285,6 @@ find_var_or_die(const char *id, int line)
 %token CLASS FROM
 %token CONST VOID STRUCT UNION ENUM THREEDOTS
 %token SIGNED UNSIGNED LONG SHORT INT FLOAT DOUBLE CHAR
-%token ONERROR
 
 %token <id> TOKEN NUMBER TYPETOKEN ARRAY_DIM
 %token <cbuf> CCODE HTCODE PHCODE HCODE ACODE ATCODE
@@ -639,9 +679,9 @@ stars:		'*' stars			{ stars++; }
 
 /* this never sets the_scope */
 simplesigtype:	TOKEN sigtype	{
-			if(strcmp($<id>1,"first")==0)
+			if(strcmp($<id>1, "first")==0)
 				$<sigtype>$ = SIGNAL_FIRST_METHOD;
-			else if(strcmp($<id>1,"last")==0)
+			else if(strcmp($<id>1, "last")==0)
 				$<sigtype>$ = SIGNAL_LAST_METHOD;
 			else {
 				yyerror(_("signal must be 'first' or 'last'"));
@@ -690,15 +730,15 @@ fullsigtype:	scope TOKEN sigtype	{
 	;
 	
 sigtype:	TOKEN '(' tokenlist ')'		{
-			gtktypes = g_list_prepend(gtktypes,$<id>1);
+			gtktypes = g_list_prepend(gtktypes, $<id>1);
 						}
 	;
 
 tokenlist:	tokenlist ',' TOKEN 		{
-			gtktypes = g_list_append(gtktypes,$<id>3);
+			gtktypes = g_list_append(gtktypes, $<id>3);
 						}
 	|	TOKEN				{ 
-			gtktypes = g_list_append(gtktypes,$<id>1);
+			gtktypes = g_list_append(gtktypes, $<id>1);
        						}
 	;
 
@@ -707,77 +747,82 @@ codenocode:	'{' CCODE			{ $<cbuf>$ = $<cbuf>2; }
 	;
 
 /*here CCODE will include the ending '}' */
-method:		SIGNAL flags fullsigtype type TOKEN '(' funcargs ')' onerror codenocode {
+method:		SIGNAL flags fullsigtype type TOKEN '(' funcargs ')' returnvals codenocode {
 			if(!has_self) {
 				yyerror(_("signal without 'self' as "
 					  "first parameter"));
+				free_all_global_state();
 				YYERROR;
 			}
 			push_function(the_scope, $<sigtype>3,NULL,
-				      $<id>5, $<id>9, $<cbuf>10,$<line>1,
+				      $<id>5, $<cbuf>10,$<line>1,
 				      ccode_line, vararg, $<list>2);
 									}
-	|	scope SIGNAL flags simplesigtype type TOKEN '(' funcargs ')' onerror codenocode {
+	|	scope SIGNAL flags simplesigtype type TOKEN '(' funcargs ')' returnvals codenocode {
 			if(!has_self) {
 				yyerror(_("signal without 'self' as "
 					  "first parameter"));
+				free_all_global_state();
 				YYERROR;
 			}
 			push_function(the_scope, $<sigtype>4, NULL,
-				      $<id>6, $<id>10, $<cbuf>11, $<line>2,
+				      $<id>6, $<cbuf>11, $<line>2,
 				      ccode_line, vararg, $<list>3);
 									}
-	|	VIRTUAL scope type TOKEN '(' funcargs ')' onerror codenocode	{
+	|	VIRTUAL scope type TOKEN '(' funcargs ')' returnvals codenocode	{
 			if(!has_self) {
 				yyerror(_("virtual method without 'self' as "
 					  "first parameter"));
+				free_all_global_state();
 				YYERROR;
 			}
 			push_function(the_scope, VIRTUAL_METHOD, NULL, $<id>4,
-				      $<id>8, $<cbuf>9, $<line>1,
+				      $<cbuf>9, $<line>1,
 				      ccode_line, vararg, NULL);
 									}
-	|	scope VIRTUAL type TOKEN '(' funcargs ')' onerror codenocode	{
+	|	scope VIRTUAL type TOKEN '(' funcargs ')' returnvals codenocode	{
 			if(!has_self) {
 				yyerror(_("virtual method without 'self' as "
 					  "first parameter"));
+				free_all_global_state();
 				YYERROR;
 			}
 			push_function(the_scope, VIRTUAL_METHOD, NULL, $<id>4,
-				      $<id>8, $<cbuf>9, $<line>2,
+				      $<cbuf>9, $<line>2,
 				      ccode_line, vararg, NULL);
 									}
-	|	VIRTUAL type TOKEN '(' funcargs ')' onerror codenocode	{
+	|	VIRTUAL type TOKEN '(' funcargs ')' returnvals codenocode	{
 			if(!has_self) {
 				yyerror(_("virtual method without 'self' as "
 					  "first parameter"));
+				free_all_global_state();
 				YYERROR;
 			}
 			push_function(PUBLIC_SCOPE, VIRTUAL_METHOD, NULL,
-				      $<id>3, $<id>7, $<cbuf>8, $<line>1,
+				      $<id>3, $<cbuf>8, $<line>1,
 				      ccode_line, vararg, NULL);
 									}
-	|	OVERRIDE '(' TYPETOKEN ')' type TOKEN '(' funcargs ')' onerror codenocode	{
+	|	OVERRIDE '(' TYPETOKEN ')' type TOKEN '(' funcargs ')' returnvals codenocode	{
 			push_function(NO_SCOPE, OVERRIDE_METHOD, $<id>3,
-				      $<id>6, $<id>10, $<cbuf>11,
+				      $<id>6, $<cbuf>11,
 				      $<line>1, ccode_line,
 				      vararg, NULL);
 									}
-	|	scope type TOKEN '(' funcargs ')' onerror codenocode	{
+	|	scope type TOKEN '(' funcargs ')' returnvals codenocode	{
 			push_function(the_scope, REGULAR_METHOD, NULL, $<id>3,
-				      $<id>7, $<cbuf>8, $<line>1, ccode_line,
+				      $<cbuf>8, $<line>1, ccode_line,
 				      vararg, NULL);
 								}
 	|	TOKEN '(' TOKEN ')' codenocode	{
-			if(strcmp($<id>1,"init")==0) {
+			if(strcmp($<id>1, "init")==0) {
 				push_init_arg($<id>3,FALSE);
 				push_function(NO_SCOPE, INIT_METHOD, NULL,
-					      $<id>1, NULL, $<cbuf>5, $<line>2,
+					      $<id>1, $<cbuf>5, $<line>2,
 					      ccode_line, FALSE, NULL);
-			} else if(strcmp($<id>1,"class_init")==0) {
+			} else if(strcmp($<id>1, "class_init")==0) {
 				push_init_arg($<id>3,TRUE);
 				push_function(NO_SCOPE, CLASS_INIT_METHOD, NULL,
-					      $<id>1, NULL, $<cbuf>5, $<line>2,
+					      $<id>1, $<cbuf>5, $<line>2,
 					      ccode_line, FALSE, NULL);
 			} else {
 				g_free($<id>1);
@@ -788,13 +833,48 @@ method:		SIGNAL flags fullsigtype type TOKEN '(' funcargs ')' onerror codenocode
 			}
 						}
 	;
-	
-onerror:	ONERROR numtok		{ $<id>$ = $<id>2; }
-	|	ONERROR	'{' CCODE	{
+
+returnvals:	TOKEN retcode		{
+			g_free(onerror); onerror = NULL;
+			g_free(defreturn); defreturn = NULL;
+			if(!set_return_value($<id>1, $<id>2)) {
+				g_free($<id>1);
+				g_free($<id>2);
+				yyerror(_("parse error"));
+				YYERROR;
+			}
+			g_free($<id>1);
+					}
+	|	TOKEN retcode TOKEN retcode	{
+			g_free(onerror); onerror = NULL;
+			g_free(defreturn); defreturn = NULL;
+			if(!set_return_value($<id>1, $<id>2)) {
+				g_free($<id>1); g_free($<id>2);
+				g_free($<id>3); g_free($<id>4);
+				yyerror(_("parse error"));
+				YYERROR;
+			}
+			if(!set_return_value($<id>3, $<id>4)) {
+				onerror = defreturn = NULL;
+				g_free($<id>1); g_free($<id>2);
+				g_free($<id>3); g_free($<id>4);
+				yyerror(_("parse error"));
+				YYERROR;
+			}
+			g_free($<id>1);
+			g_free($<id>3);
+						}
+	|				{
+			g_free(onerror); onerror = NULL;
+			g_free(defreturn); defreturn = NULL;
+					}
+	;
+
+retcode:	numtok			{ $<id>$ = $<id>1; }
+	|	'{' CCODE		{
 			$<id>$ = ($<cbuf>3)->str;
-			g_string_free($<cbuf>3,FALSE);
+			g_string_free($<cbuf>3, FALSE);
 					}
-	|				{ $<id>$ = NULL; }
 	;
 	
 funcargs:	VOID			{ vararg = FALSE; has_self = FALSE; }