//------------------------------------------------------------
// DeclarationStatement。
DeclarationStatement parseDeclarationStatement()
{
// 属性のパース
Token isConst = null;
while (true)
{
if (currentToken().Value == Token.Kind.KeyConst)
{// const
if (isConst == null)
{
setErrorKind(ErrorKind.DECLARATION_STATEMENT_ALREADY_ASSIGNED_ATTRIBUTE_CONST);
return(null);
}
isConst = currentToken();
}
else
{
break;
}
nextToken();
}
// TypePath
TypePath typePath = parseTypePath();
if (typePath == null)
{
return(null);
}
// Identifier
if (currentToken().Value != Token.Kind.Identifier)
{
return(null);
}
Identifier ident = new Identifier(currentToken());
nextToken();
// '='
IExpression expr = null;
if (currentToken().Value == Token.Kind.OpAssign)
{
nextToken();
// Expression
expr = parseExpression();
if (expr == null)
{
return(null);
}
}
// ';'
if (currentToken().Value != Token.Kind.OpSemicolon)
{
setErrorKind(ErrorKind.DECLARATION_STATEMENT_SEMICOLON_EXPECTED);
return(null);
}
nextToken();
return(new DeclarationStatement(
new VariableDecl(typePath, ident, expr)
, isConst != null
));
}
//------------------------------------------------------------
// 指定のIdentのノードを探す。
public ISymbolNode FindChildNode(Identifier aIdent)
{
return(mNodeList.FindNode(aIdent));
}
