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Now handles forward declared structures correctly.

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Issue #166


git-svn-id: http://picoc.googlecode.com/svn/trunk@583 21eae674-98b7-11dd-bd71-f92a316d2d60
This commit is contained in:
zik.saleeba 2012-09-23 11:48:27 +00:00
parent 35e64fa8c1
commit 9ec50b6e49
6 changed files with 42 additions and 3 deletions
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1
interpreter.h
View file

@ -515,6 +515,7 @@ void TypeParseIdentPart(struct ParseState *Parser, struct ValueType *BasicTyp, s
void TypeParse(struct ParseState *Parser, struct ValueType **Typ, char **Identifier, int *IsStatic);
struct ValueType *TypeGetMatching(Picoc *pc, struct ParseState *Parser, struct ValueType *ParentType, enum BaseType Base, int ArraySize, const char *Identifier, int AllowDuplicates);
struct ValueType *TypeCreateOpaqueStruct(Picoc *pc, struct ParseState *Parser, const char *StructName, int Size);
int TypeIsForwardDeclared(struct ParseState *Parser, struct ValueType *Typ);
/* heap.c */
void HeapInit(Picoc *pc, int StackSize);

18
tests/56_cross_structure.c Normal file
View file

@ -0,0 +1,18 @@
#include <stdio.h>
struct s1;
struct s2
{
struct s1 *s;
};
struct s1
{
struct s2 *s;
};
void main()
{
printf("ok\n");
}

1
tests/56_cross_structure.expect Normal file
View file

@ -0,0 +1 @@
ok

3
tests/Makefile
View file

@ -49,7 +49,8 @@ TESTS= 00_assignment.test \
51_static.test \
52_unnamed_enum.test \
54_goto.test \
55_array_initialiser.test
55_array_initialiser.test \
56_cross_structure.test
%.test: %.expect %.c
@echo Test: $*...

18
type.c
View file

@ -198,15 +198,18 @@ void TypeParseStruct(struct ParseState *Parser, struct ValueType **Typ, int IsSt
StructIdentifier = PlatformMakeTempName(pc, TempNameBuf);
}
*Typ = TypeGetMatching(pc, Parser, &Parser->pc->UberType, IsStruct ? TypeStruct : TypeUnion, 0, StructIdentifier, Token != TokenLeftBrace);
*Typ = TypeGetMatching(pc, Parser, &Parser->pc->UberType, IsStruct ? TypeStruct : TypeUnion, 0, StructIdentifier, TRUE);
if (Token == TokenLeftBrace && (*Typ)->Members != NULL)
ProgramFail(Parser, "data type '%t' is already defined", *Typ);
Token = LexGetToken(Parser, NULL, FALSE);
if (Token != TokenLeftBrace)
{
/* use the already defined structure */
#if 0
if ((*Typ)->Members == NULL)
ProgramFail(Parser, "structure '%s' isn't defined", LexValue->Val->Identifier);
#endif
return;
}
@ -527,3 +530,14 @@ void TypeParse(struct ParseState *Parser, struct ValueType **Typ, char **Identif
TypeParseIdentPart(Parser, BasicType, Typ, Identifier);
}
/* check if a type has been fully defined - otherwise it's just a forward declaration */
int TypeIsForwardDeclared(struct ParseState *Parser, struct ValueType *Typ)
{
if (Typ->Base == TypeArray)
return TypeIsForwardDeclared(Parser, Typ->FromType);
if ( (Typ->Base == TypeStruct || Typ->Base == TypeUnion) && Typ->Members == NULL)
return TRUE;
return FALSE;
}

4
variable.c
View file

@ -185,6 +185,10 @@ struct Value *VariableDefineButIgnoreIdentical(struct ParseState *Parser, char *
int DeclLine;
int DeclColumn;
/* is the type a forward declaration? */
if (TypeIsForwardDeclared(Parser, Typ))
ProgramFail(Parser, "type '%t' isn't defined", Typ);
if (IsStatic)
{
char MangledName[LINEBUFFER_MAX];