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Add TRUE and FALSE terminals to the zcc grammar

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- I can't believe I completely forgot to let the parser handle true and
  false literals.
- Consolidate all the %include blocks in zcc-parse.lemon into a single
  one, because Lemon all of a sudden decided it didn't like me having more
  than one in the grammar file.
- Added a PBool type to represent boolean values with.
This commit is contained in:
Randy Heit 2013-09-28 21:08:30 -05:00
parent 1948642758
commit a0dbcb5d5b
3 changed files with 44 additions and 24 deletions
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7
src/dobjtype.cpp
View file

@ -66,6 +66,7 @@ PVoidType *TypeVoid;
PInt *TypeSInt8, *TypeUInt8;
PInt *TypeSInt16, *TypeUInt16;
PInt *TypeSInt32, *TypeUInt32;
PBool *TypeBool;
PFloat *TypeFloat32, *TypeFloat64;
PString *TypeString;
PName *TypeName;
@ -307,6 +308,7 @@ void PType::StaticInit()
RUNTIME_CLASS(PErrorType)->TypeTableType = RUNTIME_CLASS(PErrorType);
RUNTIME_CLASS(PVoidType)->TypeTableType = RUNTIME_CLASS(PVoidType);
RUNTIME_CLASS(PInt)->TypeTableType = RUNTIME_CLASS(PInt);
RUNTIME_CLASS(PBool)->TypeTableType = RUNTIME_CLASS(PBool);
RUNTIME_CLASS(PFloat)->TypeTableType = RUNTIME_CLASS(PFloat);
RUNTIME_CLASS(PString)->TypeTableType = RUNTIME_CLASS(PString);
RUNTIME_CLASS(PName)->TypeTableType = RUNTIME_CLASS(PName);
@ -334,6 +336,7 @@ void PType::StaticInit()
TypeTable.AddType(TypeUInt16 = new PInt(2, true));
TypeTable.AddType(TypeSInt32 = new PInt(4, false));
TypeTable.AddType(TypeUInt32 = new PInt(4, true));
TypeTable.AddType(TypeBool = new PBool);
TypeTable.AddType(TypeFloat32 = new PFloat(4));
TypeTable.AddType(TypeFloat64 = new PFloat(8));
TypeTable.AddType(TypeString = new PString);
@ -561,6 +564,10 @@ int PInt::GetRegType() const
return REGT_INT;
}
/* PBool ******************************************************************/
IMPLEMENT_CLASS(PBool)
/* PFloat *****************************************************************/
IMPLEMENT_CLASS(PFloat)

8
src/dobjtype.h
View file

@ -230,6 +230,13 @@ protected:
PInt();
};
class PBool : public PInt
{
DECLARE_CLASS(PBool, PInt);
public:
PBool() : PInt(sizeof(bool), true) {}
};
class PFloat : public PBasicType
{
DECLARE_CLASS(PFloat, PBasicType);
@ -643,6 +650,7 @@ extern PVoidType *TypeVoid;
extern PInt *TypeSInt8, *TypeUInt8;
extern PInt *TypeSInt16, *TypeUInt16;
extern PInt *TypeSInt32, *TypeUInt32;
extern PBool *TypeBool;
extern PFloat *TypeFloat32, *TypeFloat64;
extern PString *TypeString;
extern PName *TypeName;

53
src/zscript/zcc-parse.lemon
View file

@ -43,6 +43,25 @@ static void SetNodeLine(ZCC_TreeNode *name, int line)
name->Type = type; \
name->IntVal = val
struct ClassFlagsBlock {
VM_UWORD Flags;
ZCC_Identifier *Replaces;
};
struct StateOpts {
ZCC_Expression *Offset;
bool Bright;
};
struct VarOrFun
{
ZCC_VarName *VarNames;
ZCC_FuncParamDecl *FuncParams;
ZCC_CompoundStmt *FuncBody;
ENamedName FuncName;
int FuncFlags;
int SourceLoc;
};
}
%token_prefix ZCC_
@ -164,12 +183,6 @@ class_ancestry(X) ::= . { X = NULL; }
class_ancestry(X) ::= COLON dottable_id(A). { X = A; }
%type class_flags{ClassFlagsBlock}
%include {
struct ClassFlagsBlock {
VM_UWORD Flags;
ZCC_Identifier *Replaces;
};
}
class_flags(X) ::= . { X.Flags = 0; X.Replaces = NULL; }
class_flags(X) ::= class_flags(A) ABSTRACT. { X.Flags = A.Flags | 0/*FIXME*/; X.Replaces = A.Replaces; }
class_flags(X) ::= class_flags(A) NATIVE. { X.Flags = A.Flags | 0/*FIXME*/; X.Replaces = A.Replaces; }
@ -369,12 +382,6 @@ enumerator(X) ::= IDENTIFIER(A) EQ expr(B). /* Expression must be constant. */
%type state_call {ZCC_ExprFuncCall *}
%type state_call_params {ZCC_FuncParm *}
%include {
struct StateOpts {
ZCC_Expression *Offset;
bool Bright;
};
}
%type state_opts {StateOpts}
states_def(X) ::= STATES(T) scanner_mode LBRACE states_body(A) RBRACE.
@ -618,18 +625,6 @@ array_size(X) ::= array_size(A) array_size_expr(B).
X = A;
}
%include
{
struct VarOrFun
{
ZCC_VarName *VarNames;
ZCC_FuncParamDecl *FuncParams;
ZCC_CompoundStmt *FuncBody;
ENamedName FuncName;
int FuncFlags;
int SourceLoc;
};
}
%type variables_or_function {VarOrFun}
/* Multiple type names are only valid for functions. */
@ -1232,6 +1227,16 @@ constant(X) ::= NAMECONST(A).
floatconst->IntVal = A.Int;
X = floatconst;
}
constant(X) ::= FALSE(A).
{
NEW_INTCONST_NODE(boolconst, TypeBool, false, A);
X = boolconst;
}
constant(X) ::= TRUE(A).
{
NEW_INTCONST_NODE(boolconst, TypeBool, true, A);
X = boolconst;
}
/************ Statements ************/