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- I have decided to opt for simplicity over C-like-ness and group array sizes with the rest

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of the type declaration rather than split it up after the variable name.
- More AST work. At this rate, maybe I'll finally be building a complete AST by the end of the
  month!

SVN r2499 (scripting)
This commit is contained in:
Randy Heit 2010-08-10 04:25:52 +00:00
parent 9d931ed10c
commit 081ebbb64b
5 changed files with 107 additions and 48 deletions
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1
src/sc_man_scanner.re
View file

@ -175,6 +175,7 @@ std2:
'meta' { RET(TK_Meta); }
'deprecated' { RET(TK_Deprecated); }
'action' { RET(TK_Action); }
'readonly' { RET(TK_ReadOnly); }
/* other DECORATE top level keywords */
'#include' { RET(TK_Include); }

1
src/sc_man_tokens.h
View file

@ -130,4 +130,5 @@ xx(TK_Fail, "'fail'")
xx(TK_Wait, "'wait'")
xx(TK_Meta, "'meta'")
xx(TK_Deprecated, "'deprecated'")
xx(TK_ReadOnly, "'readonly'")
#undef xx

105
src/zscript/zcc-parse.lemon
View file

@ -170,6 +170,7 @@ class_innards ::= class_innards class_member.
%type struct_def{ZCC_Struct *}
%type enum_def {ZCC_Enum *}
%type states_def {ZCC_States *}
%type const_def {ZCC_ConstantDef *}
class_member ::= declarator.
class_member ::= enum_def.
@ -183,6 +184,7 @@ class_member ::= const_def.
%type struct_body{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.
{
@ -343,7 +345,7 @@ state_action(X) ::= LBRACE error scanner_mode RBRACE. { X = NULL; }
state_action(X) ::= state_call(A) scanner_mode SEMICOLON. { X = A; }
state_call(X) ::= . { X = NULL; }
state_call(X) ::= IDENTIFIER(A) func_params(B).
state_call(X) ::= IDENTIFIER(A) func_expr_list(B).
{
NEW_AST_NODE(ExprFuncCall, expr);
NEW_AST_NODE(ExprID, func);
@ -394,10 +396,13 @@ vector_size(X) ::= LT INTCONST(A) GT. { X = A.Int; }
SBYTE BYTE SHORT USHORT INT UINT BOOL FLOAT DOUBLE STRING VECTOR NAME.
/* Aggregate types */
%type aggregate_type {PType *}
%type type {PType *}
%type type_or_array {PType *}
%type aggregate_type {ZCC_Type *}
%type type {ZCC_Type *}
%type type_list {ZCC_Type *}
%type type_list_or_void {ZCC_Type *}
%type type_or_array {ZCC_Type *}
%type class_restrictor {PClass *}
%type array_size{ZCC_Expression *}
aggregate_type ::= MAP LT type_or_array COMMA type_or_array GT. /* Hash table */
aggregate_type ::= ARRAY LT type_or_array GT. /* TArray<type> */
@ -406,24 +411,24 @@ aggregate_type ::= CLASS class_restrictor. /* class<type> */
class_restrictor ::= .
class_restrictor ::= LT IDENTIFIER GT.
type(X) ::= type_name(A). { X = A; }
type(X) ::= aggregate_type(A). { X = A; }
type(X) ::= type_name(A). { X = A; A->ArraySize = NULL; }
type(X) ::= aggregate_type(A). { X = A; A->ArraySize = NULL; }
type_or_array ::= type.
type_or_array ::= type array_size.
type_or_array(X) ::= type(A). { X = A; }
type_or_array(X) ::= type(A) array_size(B). { X = A; A->ArraySize = B; }
type_list ::= type_or_array. /* A comma-separated list of types */
type_list ::= type_list COMMA type_or_array.
type_list(X) ::= type_or_array(A). { X = A; }/* A comma-separated list of types */
type_list(X) ::= type_list(A) COMMA type_or_array(B). { X = A; A->AppendSibling(B); }
type_list_or_void ::= VOID.
type_list_or_void ::= type_list.
type_list_or_void(X) ::= VOID. { X = NULL; }
type_list_or_void(X) ::= type_list(A). { X = A; }
%type array_size{ZCC_Expression *}
array_size(X) ::= LBRACKET opt_expr(A) RBRACKET.
{
if (A == NULL)
{
NEW_AST_NODE(Expression,nil);
nil->Operation = PEX_Nil;
X = nil;
}
else
@ -436,6 +441,7 @@ array_size(X) ::= array_size(A) LBRACKET opt_expr(B) RBRACKET.
if (B == NULL)
{
NEW_AST_NODE(Expression,nil);
nil->Operation = PEX_Nil;
A->AppendSibling(nil);
}
else
@ -459,23 +465,15 @@ variables_or_function ::= error SEMICOLON.
%type variable_name{ZCC_VarName *}
%type variable_list{ZCC_VarName *}
%type decl_flags{int}
variable_name(X) ::= IDENTIFIER(A).
{
NEW_AST_NODE(VarName,var);
var->Name = ENamedName(A.Int);
var->bIsArray = false;
var->ArraySize = 0;
X = var;
}
variable_name(X) ::= IDENTIFIER(A) array_size(B).
{
NEW_AST_NODE(VarName,var);
var->Name = ENamedName(A.Int);
var->bIsArray = false;
var->ArraySize = B;
X = var;
}
variable_list(X) ::= variable_name(A).
{
X = A;
@ -486,16 +484,17 @@ variable_list(X) ::= variable_list(A) COMMA variable_name(B).
X = A;
}
decl_flags ::= .
decl_flags ::= decl_flags NATIVE.
decl_flags ::= decl_flags STATIC.
decl_flags ::= decl_flags PRIVATE.
decl_flags ::= decl_flags PROTECTED.
decl_flags ::= decl_flags LATENT.
decl_flags ::= decl_flags FINAL.
decl_flags ::= decl_flags META.
decl_flags ::= decl_flags ACTION.
decl_flags ::= decl_flags DEPRECATED LPAREN string_constant RPAREN.
decl_flags(X) ::= . { X = 0; }
decl_flags(X) ::= decl_flags(A) NATIVE. { X = A | ZCC_Native; }
decl_flags(X) ::= decl_flags(A) STATIC. { X = A | ZCC_Static; }
decl_flags(X) ::= decl_flags(A) PRIVATE. { X = A | ZCC_Private; }
decl_flags(X) ::= decl_flags(A) PROTECTED. { X = A | ZCC_Protected; }
decl_flags(X) ::= decl_flags(A) LATENT. { X = A | ZCC_Latent; }
decl_flags(X) ::= decl_flags(A) FINAL. { X = A | ZCC_Final; }
decl_flags(X) ::= decl_flags(A) META. { X = A | ZCC_Meta; }
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) DEPRECATED. { X = A | ZCC_Deprecated; }
func_const ::= .
func_const ::= CONST.
@ -503,22 +502,40 @@ func_const ::= CONST.
opt_func_body ::= SEMICOLON.
opt_func_body ::= function_body.
func_params ::= . /* empty */
func_params ::= VOID.
func_params ::= func_param_list.
%type func_params {ZCC_FuncParamDecl *}
%type func_param_list {ZCC_FuncParamDecl *}
%type func_param {ZCC_FuncParamDecl *}
%type func_param_flags {int}
func_param_list ::= func_param.
func_param_list ::= func_param COMMA func_param_list.
func_params(X) ::= . /* empty */ { X = NULL; }
func_params(X) ::= VOID. { X = NULL; }
func_params(X) ::= func_param_list(A). { X = A; }
func_param ::= func_param_flags type variable_name.
func_param_list(X) ::= func_param(A). { X = A; }
func_param_list(X) ::= func_param(A) COMMA func_param_list(B). { X = A; A->AppendSibling(B); }
func_param_flags ::= .
func_param_flags ::= func_param_flags IN.
func_param_flags ::= func_param_flags OUT.
func_param_flags ::= func_param_flags OPTIONAL.
func_param(X) ::= func_param_flags(A) type(B) IDENTIFIER(C).
{
NEW_AST_NODE(FuncParamDecl,parm);
parm->Type = B;
parm->Name = C.Name();
parm->Flags = A;
X = parm;
}
func_param_flags(X) ::= . { X = 0; }
func_param_flags(X) ::= func_param_flags(A) IN. { X = A | ZCC_In; }
func_param_flags(X) ::= func_param_flags(A) OUT. { X = A | ZCC_Out; }
func_param_flags(X) ::= func_param_flags(A) OPTIONAL. { X = A | ZCC_Optional; }
/* Like UnrealScript, a constant's type is implied by its value's type. */
const_def ::= CONST IDENTIFIER EQ expr SEMICOLON.
const_def(X) ::= CONST IDENTIFIER(A) EQ expr(B) SEMICOLON.
{
NEW_AST_NODE(ConstantDef,def);
def->Name = A.Name();
def->Value = B;
X = def;
}
/************ Expressions ************/

1
src/zscript/zcc_parser.cpp
View file

@ -76,6 +76,7 @@ static void InitTokenMap()
TOKENDEF(TK_Final, ZCC_FINAL);
TOKENDEF(TK_Meta, ZCC_META);
TOKENDEF(TK_Deprecated, ZCC_DEPRECATED);
TOKENDEF(TK_ReadOnly, ZCC_READONLY);
TOKENDEF('{', ZCC_LBRACE);
TOKENDEF('}', ZCC_RBRACE);
TOKENDEF(TK_Struct, ZCC_STRUCT);

47
src/zscript/zcc_parser.h
View file

@ -18,6 +18,31 @@ union ZCCToken
ENamedName Name() { return ENamedName(Int); }
};
// Variable / Function modifiers
enum
{
ZCC_Native = 1 << 0,
ZCC_Static = 1 << 1,
ZCC_Private = 1 << 2,
ZCC_Protected = 1 << 3,
ZCC_Latent = 1 << 4,
ZCC_Final = 1 << 5,
ZCC_Meta = 1 << 6,
ZCC_Action = 1 << 7,
ZCC_Deprecated = 1 << 8,
ZCC_ReadOnly = 1 << 9,
};
// Function parameter modifiers
enum
{
ZCC_In = 1 << 0,
ZCC_Out = 1 << 1,
ZCC_Optional = 1 << 2,
};
// Syntax tree structures.
enum EZCCTreeNodeType
{
@ -64,6 +89,8 @@ enum EZCCTreeNodeType
AST_CaseStmt,
AST_AssignStmt,
AST_LocalVarStmt,
AST_FuncParamDecl,
AST_ConstantDef,
};
enum EZCCIntType
@ -79,6 +106,8 @@ enum EZCCIntType
enum EZCCExprType
{
PEX_Nil,
PEX_ID,
PEX_Super,
PEX_Self,
@ -254,15 +283,12 @@ struct ZCC_StateLine : ZCC_StatePart
struct ZCC_VarName : ZCC_TreeNode
{
bool bIsArray;
ZCC_Expression *ArraySize;
ENamedName Name;
};
struct ZCC_Type : ZCC_TreeNode
{
BITFIELD bIsArray:1;
ZCC_Expression *ArraySize;
ZCC_Expression *ArraySize; // NULL if not an array
};
struct ZCC_BasicType : ZCC_Type
@ -414,3 +440,16 @@ struct ZCC_LocalVarStmt : ZCC_Statement
ZCC_VarName *Vars;
ZCC_Expression *Inits;
};
struct ZCC_FuncParamDecl : ZCC_TreeNode
{
ZCC_Type *Type;
ENamedName Name;
int Flags;
};
struct ZCC_ConstantDef : ZCC_TreeNode
{
ENamedName Name;
ZCC_Expression *Value;
};