public CodeObject Visit(ASTVerb verb)
{
Type verbType = this.metadataRetriever.GetVerbType(verb.VerbId);
// Construct always true if block to wrap several statements
CodeConditionStatement result = new CodeConditionStatement();
result.Condition = new CodePrimitiveExpression(true);
// Process label if exists
if (verb.LabelId != null)
{
// If namedVar is not exists already
if (!this.namedVars.ContainsKey(verb.LabelId))
{
this.CreateNewNamedVar(verb.LabelId);
}
// verb is Block
if (typeof(AnyBlock).IsAssignableFrom(verbType))
{
this.ReplaceExistingNamedVar(verb.LabelId);
}
}
// Construct verb declaration
CodeVariableDeclarationStatement verbDeclaration = new CodeVariableDeclarationStatement();
verbDeclaration.Type = new CodeTypeReference(verbType);
verbDeclaration.Name = "verb";
verbDeclaration.InitExpression = this.CreateConstructorCallExpression(verbType, verb.Operands);
result.TrueStatements.Add(verbDeclaration);
// Construct Set label Id for Commands
if (verb.LabelId != null)
{
if (typeof(AnyCommand).IsAssignableFrom(verbType))
{
result.TrueStatements.Add(GenerationUtils.ConstructCallCommandSetIdMethod("verb", verb.LabelId));
}
}
// Construct AddVerb method call
result.TrueStatements.Add(GenerationUtils.ConstructCallAddVerbMethod("verb"));
// This is needed for Block labels assignment!!!
if (typeof(AnyBlock).IsAssignableFrom(verbType))
{
this.currentBlockNo++;
}
return(result);
}
// <verb> ::= [ <id> ( <WHITE> )+ ] <qual-id> [ ( <WHITE> )+ <operands> ]
// TODO: Temporary hack, <qual-id> for label
private ASTVerb ExpectVerb()
{
ASTVerb verb = new ASTVerb();
string currentId = this.ExpectQualID();
if (!this.IsVerbId(currentId))
{
// Verb has Label
verb.LabelId = currentId;
do
{
this.Expect(TokenType.WHITE);
} while (this.Scanner.CurrentToken == TokenType.WHITE);
currentId = this.ExpectQualID();
}
verb.VerbId = this.ResolveVerbId(currentId);
if(this.Scanner.CurrentToken == TokenType.WHITE)
{
do
{
this.Expect(TokenType.WHITE);
} while (this.Scanner.CurrentToken == TokenType.WHITE);
// Operands
IList<ASTAnyExpression> operands = this.ExpectOperands();
foreach (var operand in operands)
{
verb.Operands.Add(operand);
}
}
//// Operands
//if (this.Scanner.CurrentToken == TokenType.LPAR
// || this.Scanner.CurrentToken == TokenType.ID
// || this.Scanner.CurrentToken == TokenType.INTEGER
// || this.Scanner.CurrentToken == TokenType.MINUS
// || this.Scanner.CurrentToken == TokenType.PLUS)
//{
// IList<ASTAnyExpression> operands = this.ExpectOperands();
// foreach (var operand in operands)
// {
// verb.Operands.Add(operand);
// }
//}
//Console.WriteLine(verb);
return verb;
}
public void Verb()
{
ASTVerb node = new ASTVerb();
node.LabelId = "SomeLabel";
node.VerbId = "START";
node.Operands.Add(new ASTLiteral()
{
LiteralType = LiteralType.Double,
Value = 2.3
});
string result = node.Serialize();
Console.WriteLine(result);
}
