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%{
using System.Text;
using System.IO;
using System;
using System.Linq;
using System.Collections.Generic;
namespace Monodoc.Ecma
{
public class EcmaUrlParser
{
int yacc_verbose_flag = 0;
public void IsValid (string input)
{
var lexer = new EcmaUrlTokenizer (input);
this.yyparse (lexer);
}
public EcmaDesc Parse (string input)
{
var lexer = new EcmaUrlTokenizer (input);
return (EcmaDesc)this.yyparse (lexer);
}
public bool TryParse (string input, out EcmaDesc desc)
{
desc = null;
try {
desc = Parse (input);
} catch {
return false;
}
return true;
}
EcmaDesc SetEcmaDescType (object result, EcmaDesc.Kind kind)
{
var desc = result as EcmaDesc;
desc.DescKind = kind;
return desc;
}
List<T> SafeReverse<T> (List<T> input)
{
if (input == null)
return null;
input.Reverse ();
return input;
}
%}
%token ERROR
%token IDENTIFIER
%token DIGIT
%token DOT
%token COMMA
%token COLON
%token INNER_TYPE_SEPARATOR
%token OP_GENERICS_LT
%token OP_GENERICS_GT
%token OP_GENERICS_BACKTICK
%token OP_OPEN_PAREN
%token OP_CLOSE_PAREN
%token OP_ARRAY_OPEN
%token OP_ARRAY_CLOSE
%token SLASH_SEPARATOR
%token STAR
%token REF_ARG
%token OUT_ARG
%token EXPLICIT_IMPL_SEP
%start expression
%%
expression
: 'T' COLON type_expression { $$ = SetEcmaDescType ($3, EcmaDesc.Kind.Type); }
| 'N' COLON namespace_expression { $$ = SetEcmaDescType ($3, EcmaDesc.Kind.Namespace); }
| 'M' COLON method_expression { $$ = SetEcmaDescType ($3, EcmaDesc.Kind.Method); }
| 'F' COLON simple_member_expression { $$ = SetEcmaDescType ($3, EcmaDesc.Kind.Field); }
| 'C' COLON constructor_expression { $$ = SetEcmaDescType ($3, EcmaDesc.Kind.Constructor); }
| 'P' COLON property_expression { $$ = SetEcmaDescType ($3, EcmaDesc.Kind.Property); }
| 'E' COLON simple_member_expression { $$ = SetEcmaDescType ($3, EcmaDesc.Kind.Event); }
| 'O' COLON operator_expression { $$ = SetEcmaDescType ($3, EcmaDesc.Kind.Operator); }
/* i.e. id.id.id or id */
dot_expression
: IDENTIFIER { $$ = new List<string> { (string)$1 }; }
| IDENTIFIER DOT dot_expression { ((ICollection<string>)$3).Add ((string)$1); $$ = $3; }
namespace_expression
: dot_expression { $$ = new EcmaDesc { Namespace = string.Join (".", ((IEnumerable<string>)$1).Reverse ()) }; }
type_expression
: dot_expression type_expression_suffix {
var dotExpr = ((List<string>)$1);
dotExpr.Reverse ();
var desc = $2 as EcmaDesc;
desc.DescKind = EcmaDesc.Kind.Type;
desc.Namespace = string.Join (".", dotExpr.Take (dotExpr.Count - 1));
desc.TypeName = dotExpr.Last ();
$$ = desc;
}
/* To be used in types with no namespaces attached to them like an inner type*/
reduced_type_expression
: IDENTIFIER type_expression_suffix {
var desc = $2 as EcmaDesc;
desc.DescKind = EcmaDesc.Kind.Type;
desc.TypeName = $1 as string;
$$ = desc;
}
type_expression_suffix
: opt_generic_type_suffix opt_inner_type_description opt_array_definition opt_etc {
bool nestedDescHasEtc = $2 != null && ((EcmaDesc)$2).IsEtc;
EcmaDesc nestedType = (EcmaDesc)$2;
$$ = new EcmaDesc {
GenericTypeArguments = $1 as List<EcmaDesc>,
NestedType = nestedType,
ArrayDimensions = SafeReverse ($3 as List<int>),
Etc = $4 != null ? ((Tuple<char, string>)$4).Item1 : nestedDescHasEtc ? nestedType.Etc : (char)0,
EtcFilter = $4 != null ? ((Tuple<char, string>)$4).Item2 : nestedDescHasEtc ? nestedType.EtcFilter : null
};
if (nestedDescHasEtc) {
nestedType.Etc = (char)0;
nestedType.EtcFilter = null;
}
}
opt_inner_type_description
: /* empty */ { $$ = null; }
| INNER_TYPE_SEPARATOR reduced_type_expression { $$ = $2; }
opt_generic_type_suffix
: /* empty */ { $$ = null; }
| OP_GENERICS_BACKTICK DIGIT { $$ = Enumerable.Repeat<EcmaDesc> (null, (int)$2).ToList (); }
| OP_GENERICS_LT generic_type_arg_list OP_GENERICS_GT { $$ = $2; }
generic_type_arg_list
: type_expression { $$ = new List<EcmaDesc> () { (EcmaDesc)$1 }; }
| generic_type_arg_list COMMA type_expression { ((List<EcmaDesc>)$1).Add ((EcmaDesc)$3); $$ = $1; }
opt_array_definition
: /* empty */ { $$ = null; }
| OP_ARRAY_OPEN opt_array_definition_list OP_ARRAY_CLOSE opt_array_definition {
var dims = ((IList<int>)$4) ?? new List<int> (2);
dims.Add ((int)$2);
$$ = dims;
}
opt_array_definition_list
: /* empty */ { $$ = 1; }
| COMMA opt_array_definition_list { $$ = ((int)$2) + 1; }
opt_etc
: /* empty */ { $$ = null; }
| SLASH_SEPARATOR etc_identifier { $$ = Tuple.Create<char, string> (((string)$2)[0], null); }
| SLASH_SEPARATOR etc_identifier SLASH_SEPARATOR reduced_member_expression { $$ = Tuple.Create<char, string> (((string)$2)[0], (string)$4); }
/* | SLASH_SEPARATOR etc_identifier SLASH_SEPARATOR IDENTIFIER opt_generic_type_suffix { $$ = Tuple.Create<char, string> (((string)$2)[0], (string)$4 + ($5 == null ? string.Empty : "<" + string.Join (",", ((IEnumerable<EcmaDesc>)$5).Select (t => t.ToCompleteTypeName ())) + ">")); } */
etc_identifier
: STAR { $$ = "*"; }
| IDENTIFIER { $$ = $1; }
method_expression
: type_expression DOT IDENTIFIER opt_generic_type_suffix opt_arg_list_suffix {
var desc = $1 as EcmaDesc;
desc.MemberName = $3 as string;
desc.GenericMemberArguments = $4 as List<EcmaDesc>;
desc.MemberArguments = SafeReverse ($5 as List<EcmaDesc>);
$$ = desc;
}
| dot_expression opt_generic_type_suffix opt_arg_list_suffix {
var dotExpr = ((List<string>)$1);
$$ = new EcmaDesc {
Namespace = string.Join (".", dotExpr.Skip (2).DefaultIfEmpty (string.Empty).Reverse ()),
TypeName = dotExpr.Skip (1).First (),
MemberName = dotExpr.First (),
GenericMemberArguments = $2 as List<EcmaDesc>,
MemberArguments = SafeReverse ($3 as List<EcmaDesc>)
};
}
| type_expression EXPLICIT_IMPL_SEP method_expression {
var desc = $1 as EcmaDesc;
desc.ExplicitImplMember = $3 as EcmaDesc;
$$ = desc;
}
/* To be used with members that may have no type/namespace attached */
reduced_member_expression
: IDENTIFIER opt_generic_type_suffix { $$ = (string)$1 + ($2 == null ? string.Empty : "<" + string.Join (",", ((IEnumerable<EcmaDesc>)$2).Select (t => t.ToCompleteTypeName ())) + ">"); }
| IDENTIFIER opt_generic_type_suffix DOT reduced_member_expression {
var existing = $4 as string;
var expr = (string)$1 + ($2 == null ? string.Empty : "<" + string.Join (",", ((IEnumerable<EcmaDesc>)$2).Select (t => t.ToCompleteTypeName ())) + ">");
$$ = expr + "." + existing;
}
arg_type_expression
: type_expression opt_arg_type_suffix { var desc = (EcmaDesc)$1; desc.DescModifier = (EcmaDesc.Mod)$2; $$ = desc; }
opt_arg_type_suffix
: /* empty */ { $$ = EcmaDesc.Mod.Normal; }
| STAR { $$ = EcmaDesc.Mod.Pointer; }
| REF_ARG { $$ = EcmaDesc.Mod.Ref; }
| OUT_ARG { $$ = EcmaDesc.Mod.Out; }
type_expression_list
: /* empty */ { $$ = null; }
| arg_type_expression { $$ = new List<EcmaDesc> () { (EcmaDesc)$1 }; }
| arg_type_expression COMMA type_expression_list { ((List<EcmaDesc>)$3).Add ((EcmaDesc)$1); $$ = $3; }
simple_member_expression
: dot_expression {
var dotExpr = ((List<string>)$1);
dotExpr.Reverse ();
$$ = new EcmaDesc {
Namespace = dotExpr.Count > 2 ? string.Join (".", dotExpr.Take (dotExpr.Count - 2)) : string.Empty,
TypeName = dotExpr.Count > 1 ? dotExpr[dotExpr.Count - 2] : string.Empty,
MemberName = dotExpr[dotExpr.Count - 1]
};
}
| type_expression DOT IDENTIFIER {
var desc = $1 as EcmaDesc;
desc.MemberName = $3 as string;
$$ = desc;
}
| type_expression EXPLICIT_IMPL_SEP simple_member_expression {
var desc = $1 as EcmaDesc;
desc.ExplicitImplMember = $3 as EcmaDesc;
$$ = desc;
}
constructor_expression
: method_expression { $$ = $1; }
operator_expression
: method_expression { $$ = $1; }
property_expression
: simple_member_expression opt_property_indexer {
var desc = $1 as EcmaDesc;
(desc.ExplicitImplMember ?? desc).MemberArguments = SafeReverse ($2 as List<EcmaDesc>);
$$ = desc;
}
opt_property_indexer
: opt_arg_list_suffix { $$ = $1; }
/*simple_member_expression opt_arg_list_suffix { $$ = CopyFromEcmaDesc (new EcmaDesc {
MemberArguments = SafeReverse ($2 as List<EcmaDesc>)
}, (EcmaDesc)$1);
}*/
opt_arg_list_suffix
: /* empty */ { $$ = null; }
| OP_OPEN_PAREN type_expression_list OP_CLOSE_PAREN { $$ = $2; }
%%
}
|
