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- Make the ZCC parser compilable again. Does every rule in the grammar that needs to appear in

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the AST do so now? That would sure be nice.

SVN r2715 (scripting)
This commit is contained in:
Randy Heit 2010-09-08 04:32:31 +00:00
parent 12c6ddfbfb
commit 4b8900816b
2 changed files with 59 additions and 52 deletions
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69
src/zscript/zcc-parse.lemon
View file

@ -101,7 +101,8 @@ opt_expr(X) ::= expr(A).
%type class_definition{ZCC_Class *} %type class_definition{ZCC_Class *}
%type class_head{ZCC_Class *} %type class_head{ZCC_Class *}
%type class_innards{ZCC_Class *} %type class_innards{ZCC_TreeNode *}
%type class_member{ZCC_TreeNode *}
%type class_body{ZCC_TreeNode *} %type class_body{ZCC_TreeNode *}
class_definition(X) ::= class_head(A) class_body(B). class_definition(X) ::= class_head(A) class_body(B).
@ -125,7 +126,7 @@ class_ancestry(X) ::= . { X = NULL; }
class_ancestry(X) ::= COLON dottable_id(A). { X = A; } class_ancestry(X) ::= COLON dottable_id(A). { X = A; }
%type class_flags{ClassFlagsBlock} %type class_flags{ClassFlagsBlock}
%include{ %include {
struct ClassFlagsBlock { struct ClassFlagsBlock {
VM_UWORD Flags; VM_UWORD Flags;
ZCC_Identifier *Replaces; ZCC_Identifier *Replaces;
@ -165,30 +166,29 @@ dottable_id(X) ::= dottable_id(A) DOT IDENTIFIER(B).
// * constants // * constants
// * defaults // * defaults
class_body ::= SEMICOLON class_innards EOF. class_body(X) ::= SEMICOLON class_innards(A) EOF. { X = A; }
class_body ::= LBRACE class_innards RBRACE. class_body(X) ::= LBRACE class_innards(A) RBRACE. { X = A; }
class_innards ::= . class_innards(X) ::= . { X = NULL; }
class_innards ::= class_innards class_member. class_innards(X) ::= class_innards(A) class_member(B). { SAFE_APPEND(A,B); X = A; }
%type struct_def{ZCC_Struct *} %type struct_def{ZCC_Struct *}
%type enum_def {ZCC_Enum *} %type enum_def {ZCC_Enum *}
%type states_def {ZCC_States *} %type states_def {ZCC_States *}
%type const_def {ZCC_ConstantDef *} %type const_def {ZCC_ConstantDef *}
class_member ::= declarator. class_member(X) ::= declarator(A). { X = A; }
class_member ::= enum_def. class_member(X) ::= enum_def(A). { X = A; }
class_member ::= struct_def. class_member(X) ::= struct_def(A). { X = A; }
class_member ::= states_def. class_member(X) ::= states_def(A). { X = A; }
class_member ::= default_def. class_member(X) ::= default_def(A). { X = A; }
class_member ::= const_def. class_member(X) ::= const_def(A). { X = A; }
/*----- Struct Definition -----*/ /*----- Struct Definition -----*/
/* Structs can define variables and enums. */ /* Structs can define variables and enums. */
%type struct_body{ZCC_TreeNode *} %type struct_body{ZCC_TreeNode *}
%type struct_member{ZCC_TreeNode *} %type struct_member{ZCC_TreeNode *}
%type declarator_no_fun {ZCC_TreeNode *}
struct_def(X) ::= STRUCT IDENTIFIER(A) LBRACE struct_body(B) RBRACE opt_semicolon. struct_def(X) ::= STRUCT IDENTIFIER(A) LBRACE struct_body(B) RBRACE opt_semicolon.
{ {
@ -222,7 +222,7 @@ enum_def(X) ::= ENUM IDENTIFIER(A) enum_type(B) LBRACE enum_list(C) opt_comma RB
X = def; X = def;
} }
enum_type(X) ::= . { X = ZCCINT_Auto; } enum_type(X) ::= . { X = ZCC_IntAuto; }
enum_type(X) ::= COLON int_type(A). { X = A; } enum_type(X) ::= COLON int_type(A). { X = A; }
enum_list(X) ::= error. { X = NULL; } enum_list(X) ::= error. { X = NULL; }
@ -255,10 +255,8 @@ enumerator(X) ::= IDENTIFIER(A) EQ expr(B). /* Expression must be constant. */
%type state_action {ZCC_TreeNode *} %type state_action {ZCC_TreeNode *}
%type state_call {ZCC_ExprFuncCall *} %type state_call {ZCC_ExprFuncCall *}
%include %include {
{ struct StateOpts {
struct StateOpts
{
ZCC_Expression *Offset; ZCC_Expression *Offset;
bool Bright; bool Bright;
}; };
@ -363,7 +361,8 @@ state_call(X) ::= IDENTIFIER(A) func_expr_list(B).
} }
/* Definition of a default class instance. */ /* Definition of a default class instance. */
default_def ::= DEFAULT compound_statement. %type default_def {ZCC_CompoundStmt *}
default_def(X) ::= DEFAULT compound_statement(A). { X = A; }
/* Type names */ /* Type names */
%type int_type {EZCCBuiltinType} %type int_type {EZCCBuiltinType}
@ -396,10 +395,10 @@ type_name(X) ::= type_name1(A).
type_name(X) ::= IDENTIFIER(A). /* User-defined type (struct, enum, or class) */ type_name(X) ::= IDENTIFIER(A). /* User-defined type (struct, enum, or class) */
{ {
NEW_AST_NODE(BasicType, type); NEW_AST_NODE(BasicType, type);
NEW_AST_NODE(ZCC_Identifier, id); NEW_AST_NODE(Identifier, id);
type->Type = ZCC_UserType; type->Type = ZCC_UserType;
type->UserType = id; type->UserType = id;
id->Id = A; id->Id = A.Name();
X = type; X = type;
} }
type_name(X) ::= LBRACKET dottable_id(A) RBRACKET. type_name(X) ::= LBRACKET dottable_id(A) RBRACKET.
@ -419,7 +418,7 @@ vector_size(X) ::= LT INTCONST(A) GT.
{ {
if (A.Int >= 2 && A.Int <= 4) if (A.Int >= 2 && A.Int <= 4)
{ {
X = ZCC_Vector2 + A.Int - 2; X = EZCCBuiltinType(ZCC_Vector2 + A.Int - 2);
} }
else else
{ {
@ -444,7 +443,7 @@ vector_size(X) ::= LT INTCONST(A) GT.
aggregate_type(X) ::= MAP LT type_or_array(A) COMMA type_or_array(B) GT. /* Hash table */ aggregate_type(X) ::= MAP LT type_or_array(A) COMMA type_or_array(B) GT. /* Hash table */
{ {
NEW_AST_NODE(ZCC_MapType,map); NEW_AST_NODE(MapType,map);
map->KeyType = A; map->KeyType = A;
map->ValueType = B; map->ValueType = B;
X = map; X = map;
@ -452,14 +451,14 @@ aggregate_type(X) ::= MAP LT type_or_array(A) COMMA type_or_array(B) GT. /* Hash
aggregate_type(X) ::= ARRAY LT type_or_array(A) GT. /* TArray<type> */ aggregate_type(X) ::= ARRAY LT type_or_array(A) GT. /* TArray<type> */
{ {
NEW_AST_NODE(ZCC_DynArrayType,arr); NEW_AST_NODE(DynArrayType,arr);
map->ElementType = A; arr->ElementType = A;
X = map; X = arr;
} }
aggregate_type(X) ::= CLASS class_restrictor(A). /* class<type> */ aggregate_type(X) ::= CLASS class_restrictor(A). /* class<type> */
{ {
NEW_AST_NODE(ZCC_ClassType,cls); NEW_AST_NODE(ClassType,cls);
cls->Restriction = A; cls->Restriction = A;
X = cls; X = cls;
} }
@ -512,6 +511,7 @@ array_size(X) ::= array_size(A) LBRACKET opt_expr(B) RBRACKET.
{ {
ZCC_VarName *VarNames; ZCC_VarName *VarNames;
ZCC_FuncParamDecl *FuncParams; ZCC_FuncParamDecl *FuncParams;
ZCC_CompoundStmt *FuncBody;
ENamedName FuncName; ENamedName FuncName;
int FuncFlags; int FuncFlags;
}; };
@ -534,7 +534,7 @@ declarator(X) ::= decl_flags(A) type_list_or_void(B) variables_or_function(C).
decl->Flags = A | C.FuncFlags; decl->Flags = A | C.FuncFlags;
X = decl; X = decl;
} }
else if (B != NULL && B->Sibling == NULL) else if (B != NULL && B->SiblingNext == B)
{ // A variable { // A variable
NEW_AST_NODE(VarDeclarator, decl); NEW_AST_NODE(VarDeclarator, decl);
decl->Type = B; decl->Type = B;
@ -546,11 +546,11 @@ declarator(X) ::= decl_flags(A) type_list_or_void(B) variables_or_function(C).
{ // An invalid { // An invalid
if (B == NULL) if (B == NULL)
{ {
sc.ScriptMessage("Variables may not be of type void.\n"); stat->sc.ScriptMessage("Variables may not be of type void.\n");
} }
else else
{ {
sc.ScriptMessage("Variables may be of only one type.\n"); stat->sc.ScriptMessage("Variables may be of only one type.\n");
} }
X = NULL; X = NULL;
} }
@ -587,14 +587,14 @@ variables_or_function(X) ::= variable_list(A) SEMICOLON.
var.FuncBody = NULL; var.FuncBody = NULL;
X = var; X = var;
} }
variables_or_function ::= error SEMICOLON. variables_or_function(X) ::= error SEMICOLON.
{ {
VarOrFun bad; VarOrFun bad;
bad.VarNames = NULL; bad.VarNames = NULL;
bad.FuncParams = NULL; bad.FuncParams = NULL;
bad.FuncFlags = 0; bad.FuncFlags = 0;
bad.FuncName = NAME_None; bad.FuncName = NAME_None;
bad.Func_Body = NULL; bad.FuncBody = NULL;
X = bad; X = bad;
} }
@ -603,6 +603,7 @@ variables_or_function ::= error SEMICOLON.
%type variable_name{ZCC_VarName *} %type variable_name{ZCC_VarName *}
%type variable_list{ZCC_VarName *} %type variable_list{ZCC_VarName *}
%type decl_flags{int} %type decl_flags{int}
%type func_const{int}
variable_name(X) ::= IDENTIFIER(A). variable_name(X) ::= IDENTIFIER(A).
{ {
@ -633,8 +634,8 @@ decl_flags(X) ::= decl_flags(A) ACTION. { X = A | ZCC_Action; }
decl_flags(X) ::= decl_flags(A) READONLY. { X = A | ZCC_ReadOnly; } decl_flags(X) ::= decl_flags(A) READONLY. { X = A | ZCC_ReadOnly; }
decl_flags(X) ::= decl_flags(A) DEPRECATED. { X = A | ZCC_Deprecated; } decl_flags(X) ::= decl_flags(A) DEPRECATED. { X = A | ZCC_Deprecated; }
func_const ::= . func_const(X) ::= . { X = 0; }
func_const ::= CONST. func_const(X) ::= CONST. { X = ZCC_FuncConst; }
opt_func_body(X) ::= SEMICOLON. { X = NULL; } opt_func_body(X) ::= SEMICOLON. { X = NULL; }
opt_func_body(X) ::= function_body(A). { X = A; } opt_func_body(X) ::= function_body(A). { X = A; }

42
src/zscript/zcc_parser.h
View file

@ -31,6 +31,7 @@ enum
ZCC_Action = 1 << 7, ZCC_Action = 1 << 7,
ZCC_Deprecated = 1 << 8, ZCC_Deprecated = 1 << 8,
ZCC_ReadOnly = 1 << 9, ZCC_ReadOnly = 1 << 9,
ZCC_FuncConst = 1 << 10,
}; };
// Function parameter modifiers // Function parameter modifiers
@ -91,6 +92,9 @@ enum EZCCTreeNodeType
AST_LocalVarStmt, AST_LocalVarStmt,
AST_FuncParamDecl, AST_FuncParamDecl,
AST_ConstantDef, AST_ConstantDef,
AST_Declarator,
AST_VarDeclarator,
AST_FuncDeclarator,
}; };
enum EZCCBuiltinType enum EZCCBuiltinType
@ -232,7 +236,7 @@ struct ZCC_Struct : ZCC_TreeNode
struct ZCC_Enum : ZCC_TreeNode struct ZCC_Enum : ZCC_TreeNode
{ {
ENamedName EnumName; ENamedName EnumName;
EZCCIntType EnumType; EZCCBuiltinType EnumType;
struct ZCC_EnumNode *Elements; struct ZCC_EnumNode *Elements;
}; };
@ -324,23 +328,6 @@ struct ZCC_ClassType : ZCC_Type
ZCC_Identifier *Restriction; ZCC_Identifier *Restriction;
}; };
// A variable in a class or struct.
struct ZCC_VarDeclarator : ZCC_TreeNode
{
ZCC_Type *Type;
ZCC_VarName *Names;
int Flags;
};
// A function in a class.
struct ZCC_FuncDeclarator : ZCC_TreeNode
{
ZCC_Type *Type;
ZCC_FuncParamDecl *Params;
ENamedName Name;
int Flags;
};
struct ZCC_ExprID : ZCC_Expression struct ZCC_ExprID : ZCC_Expression
{ {
ENamedName Identifier; ENamedName Identifier;
@ -481,3 +468,22 @@ struct ZCC_ConstantDef : ZCC_TreeNode
ENamedName Name; ENamedName Name;
ZCC_Expression *Value; ZCC_Expression *Value;
}; };
struct ZCC_Declarator : ZCC_TreeNode
{
ZCC_Type *Type;
int Flags;
};
// A variable in a class or struct.
struct ZCC_VarDeclarator : ZCC_Declarator
{
ZCC_VarName *Names;
};
// A function in a class.
struct ZCC_FuncDeclarator : ZCC_Declarator
{
ZCC_FuncParamDecl *Params;
ENamedName Name;
};