Fixed bug108 - brackets were not collapsing the expression stack

as they should have.
Now more permissive in declarations of void main()


git-svn-id: http://picoc.googlecode.com/svn/trunk@520 21eae674-98b7-11dd-bd71-f92a316d2d60

expression.c

@@ -475,16 +475,6 @@ void ExpressionPrefixOperator(struct ParseState *Parser, struct ExpressionStack
                 ExpressionPushInt(Parser, StackTop, TypeSize(TopValue->Typ, TopValue->Typ->ArraySize, TRUE));
             break;
         
-        case TokenLeftSquareBracket:
-            /* XXX */
-            ProgramFail(Parser, "not supported");
-            break;
-        
-        case TokenOpenBracket:
-            /* XXX - cast */
-            ProgramFail(Parser, "not supported");
-            break;
-
         default:
             /* an arithmetic operator */
 #ifndef NO_FP
@@ -1065,6 +1055,9 @@ int ExpressionParse(struct ParseState *Parser, struct Value **Result)
                             }
                             else
                                 BracketPrecedence -= BRACKET_PRECEDENCE;
+                                
+                            /* collapse to the bracket precedence */
+                            ExpressionStackCollapse(Parser, &StackTop, BracketPrecedence);
                             break;
                     
                         default:

parse.c

@@ -130,8 +130,9 @@ struct Value *ParseFunctionDefinition(struct ParseState *Parser, struct ValueTyp
     if (strcmp(Identifier, "main") == 0)
     {
         /* make sure it's int main() */
-        if (FuncValue->Val->FuncDef.ReturnType != &IntType)
+        if ( FuncValue->Val->FuncDef.ReturnType != &IntType &&
-            ProgramFail(Parser, "main() should return an int");
+             FuncValue->Val->FuncDef.ReturnType != &VoidType )
+            ProgramFail(Parser, "main() should return an int or void");
 
         if (FuncValue->Val->FuncDef.NumParams != 0 &&
              (FuncValue->Val->FuncDef.NumParams != 2 || FuncValue->Val->FuncDef.ParamType[0] != &IntType) )
@@ -498,6 +499,7 @@ enum ParseResult ParseStatement(struct ParseState *Parser, int CheckTrailingSemi
         case TokenAmpersand: 
         case TokenIncrement: 
         case TokenDecrement: 
+        case TokenOpenBracket: 
             *Parser = PreState;
             ExpressionParse(Parser, &CValue);
             if (Parser->Mode == RunModeRun) 

tests/32_led.c

@@ -221,11 +221,13 @@ void print_led(unsigned long x, char *buf)
 	*buf='\0';
 }
 
-void main()
+int main()
 {
 	char buf[5*MAX_DIGITS];
 	print_led(1234567, buf);
 	printf("%s\n",buf);
+
+    return 0;
 }
 
 #ifndef NO_MAIN

tests/49_bracket_evaluation.c

@@ -0,0 +1,21 @@
+#include <stdio.h>
+
+struct point
+{
+    double x;
+    double y;
+};
+
+struct point point_array[100];
+
+int main()
+{
+    int my_point = 10;
+    
+    point_array[my_point].x = 12.34;
+    point_array[my_point].y = 56.78;
+    
+    printf("%f, %f\n", point_array[my_point].x, point_array[my_point].y);
+    
+    return 0;
+}

tests/49_bracket_evaluation.expect

@@ -0,0 +1 @@
+12.340000, 56.780000

tests/Makefile

@@ -43,7 +43,8 @@ TESTS=	00_assignment.test \
 	44_scoped_declarations.test \
 	45_empty_for.test \
 	47_switch_return.test \
-	48_nested_break.test
+	48_nested_break.test \
+    49_bracket_evaluation.test
 
 %.test: %.expect %.c
 	@echo Test: $*...