Unable to compile in Visual C++

[Ewa Rom]

Hi all,

 

I'm writing my Master thesis that includes a parser.  I chose to use Flex and 
Bison to help me with this and include the parser into my Visual C++ project.

 

I stoped at the following issue and I do not know how to recover from it.  
Everything appears to be fine as far as I can see.

 

I have a resource.h file where I define the following:

 

typedef enum {Var, Int, Opr} nodeEnum;

typedef struct VariableNode{

nodeEnum type;

char *s;

};

typedef struct IntNode{

nodeEnum type;

int i;

};

typedef struct OperNode{

nodeEnum type;

char *op;

struct nodeType *r;

struct nodeType *l;

};

typedef struct nodeType{

nodeEnum type;

VariableNode v;

IntNode in;

OperNode oper;

};

 

Then in the CoProveParser.y file I have the following:

 

%{
int yylex();
void yyerror(char *s);
 #include "stdafx.h"
 #include <stdio.h>
 #include <iostream>
 #include <stdlib.h>
 #include <stdarg.h>
 #include <string.h>
 #include <fstream>
 #include <windows.h>
 #include <Shellapi.h>
 #include "parser.hpp"
 #include "resource.h"

nodeType *v(char s);
nodeType *in(int i);
nodeType *oper(char s,nodeType l,nodeType r);

void printToFile(char *s);

using namespace std;
%}

%union {
 int iValue;
 char sIndex;
 nodeType *nPtr;
}

 %token <sIndex> STRING
 %token <iValue> INTEGER
  ...

 

 %type <nPtr> factor logic boolexpr prgrams expr term stmts statement 

%%


Grammar....


%%

// stuff from lex that yacc needs to know about:
extern int yylex();
extern int yyparse();
extern FILE *yyin;
extern FILE *log;
extern int debug;

int status;

 

nodeType *v(char s){
 nodeType *p;

 p = (nodeType*)malloc(sizeof(struct VariableNode));

 p->type = Var; 
 p->v.s = &s;

 return p;
}

 

nodeType *in(int i){
 nodeType *p;

 p = (nodeType*)malloc(sizeof(struct IntNode));

 p->type = Int;
 p->in.i = i;

 return p;
}

 

nodeType *oper(char s,nodeType l,nodeType r){
 nodeType *p;

 p = (nodeType*)malloc(sizeof(struct OperNode));

 p->type = Opr;
 p->oper.op = &s;
 p->oper.r = &r;
 p->oper.l = &l;

 return p;
}


 
int proving() {
  yyparse();
  return 1;
}

 

I do the following:

 

flex -olex.cpp CoProveLexer.lex
bison -v -d --language=C++ -oparser.cpp CoProveParser.y

 

Which generates me lex.cpp parser.cpp and parser.hpp files that I have included 
into my Visual C++ project.  

Then I try to build the project and I get the following error:

 

1>CoProveParser.y(28) : error C2143: syntax error : missing ';' before '*'

1>CoProveParser.y(28) : error C4430: missing type specifier - int assumed. 
Note: C++ does not support default-int

1>CoProveParser.y(28) : error C4430: missing type specifier - int assumed. 
Note: C++ does not support default-int




This corresponds to the following block:

 

%union {
 int iValue;
 char sIndex;
 nodeType *nPtr;
}

 

It seems like the %union does not know about the definition of the nodeType 
structure defined in the resource.h file even if I include it in the first part 
of the y file enclosed by %{  %} 

 

Any suggestions much appreciated.

 

Thank you

Ewa

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