public string VisitLiteralExpression(Expression.Literal expression)
{
if (expression.value == null)
{
return("nil");
}
return(expression.value.ToString());
}
public ByteCodeChunk VisitLiteral(Expression.Literal expression)
{
var chunk = new ByteCodeChunk(9);
switch (expression.Value)
{
case long i:
chunk.AddInstruction(Instruction.Push64, i);
break;
default:
throw new Exception();
}
return(chunk);
}
public object visitLiteralExpression(Expression.Literal expr)
{
if (expr.Value is string)
{
// TODO handle the memory slot correctly
wasm.addData(memoryPointer, expr.Value.ToString());
addInstruction(0x41);
addInstruction(Util.LEB128encode(memoryPointer));
// addInstruction(0x41);
// addInstruction(Util.LEB128encode(memoryPointer));
// addInstruction(0x2d, 0x00, 0x00);
memoryPointer += expr.Value.ToString().Length + 1;
return(null);
}
addInstruction(0x41);
addInstruction(Util.LEB128encode((int)expr.Value));
return(null);
}
protected override Value?Visit(Expression.Literal lit) => lit.Type switch
{
public object VisitLiteralExpression(Expression.Literal expression)
{
return(null);
}
public object visitLiteralExpression(Expression.Literal expr)
{
return(expr.Type);
}
public object VisitLiteralExpr(Expression.Literal expr)
{
return(new Expression.Literal());
}
public object VisitLiteralExpression(Expression.Literal expression)
{
return(expression.value);
}
protected override Node?Visit(Expression.Literal lit) => new Expression.Literal(lit.ParseTreeNode, lit.Type, lit.Value);
public object VisitLiteralExpr(Expression.Literal expr)
{
return(expr.LiteralValue());
}
private Statement ForStatement()
{
try
{
loopDepth++;
Consume(TokenType.LEFT_PAREN, "Expect '(' after 'for'.");
Statement initialiser = null;
if (Match(TokenType.SEMICOLON))
{
}
else if (Match(TokenType.VAR))
{
initialiser = VarDeclaration();
}
else
{
initialiser = ExpressionStatement();
}
Expression condition = Expression();
if (!Check(TokenType.SEMICOLON))
{
condition = Expression();
}
Consume(TokenType.SEMICOLON, "Expect ';' after loop condition.");
Expression increment = null;
if (!Check(TokenType.RIGHT_PAREN))
{
increment = Expression();
}
Consume(TokenType.RIGHT_PAREN, "Expect ')' after for clauses.");
Statement body = Statement();
if (increment != null)
{
body = new Statement.Block(new List <Statement> {
body, new Statement.Expression(increment)
});
}
if (condition == null)
{
condition = new Expression.Literal(true);
}
body = new Statement.While(condition, body);
if (initialiser != null)
{
body = new Statement.Block(new List <Statement> {
initialiser, body
});
}
return(body);
}
finally
{
loopDepth--;
}
}
