private BaseAst CheckFunctionCallsInIfAST(ProgramAst program, IfAst cmd)
{
BaseAst err = CheckFunctionCallsInStatementAST(program, cmd.IfBody);
if ((err != null) && (err.Token != TokenTypes.End) && (err.IsError))
{
return(err);
}
return(CheckFunctionCallsInStatementAST(program, cmd.ElseBody));
}
private void WriteIf(IfAst ast, List<string> vars, string p, bool writeLE)
{
file.WriteLine("{0}if ({1})", p, GetExpr(ast.Condition));
if (writeLE)
WriteLinearEquations(ast.ConvertCondition.Node, vars, p);
WriteBody(ast.IfBody, vars, p, writeLE);
if (ast.ElseBody != null)
{
file.WriteLine("{0}else", p);
WriteBody(ast.ElseBody, vars, p, writeLE);
if (writeLE)
WriteLinearEquations(ast.ConvertElseEndBody.Node, vars, p);
}
else if (writeLE)
{
WriteLinearEquations(ast.ConvertIfEndBody.Node, vars, p);
}
}
private BaseAst GetIfAST(IfAst cmd)
{
if (cmd == null)
{
return(BaseAst.GetErrorAstNode("Chybne volana funkce 'GetIfAST(IfAst cmd)', parametr 'cmd' je null"));
}
BaseAst cond;
BaseAst tmp = GetCondAST(out cond);
if (tmp.IsError)
{
return(tmp);
}
cmd.Condition = cond;
BaseAst block = StatementOrBlock();
if (block.IsError)
{
return(block);
}
cmd.IfBody = block;
if (nextNode.Token == TokenTypes.ElseRW)
{
ReadNextAst();
block = StatementOrBlock();
if (block.IsError)
{
return(block);
}
cmd.ElseBody = block;
}
return(cmd);
}
private IEnumerable <BaseAst> ConvertIf(IfAst node)
{
List <BaseAst> block = new List <BaseAst>();
internalLabelIdx++;
int idx = internalLabelIdx;
block.Add(new BaseAst {
Token = TokenTypes.Identifier, AstType = AstNodeTypes.Label, TokenText = string.Format("$IfBegin{0}", idx)
});
ConditionAst cond = ConvertTo <ConditionAst>(node, AstNodeTypes.Condition);
cond.Condition = NegateCondition(node.Condition);
block.Add(cond);
node.ConvertCondition = cond;
if (node.ElseBody != null)
{
block.Add(new GotoAst {
Token = TokenTypes.GotoRW, AstType = AstNodeTypes.Goto, TokenText = "goto", Label = string.Format("$IfFalse{0}", idx)
});
}
else
{
block.Add(new GotoAst {
Token = TokenTypes.GotoRW, AstType = AstNodeTypes.Goto, TokenText = "goto", Label = string.Format("$IfEnd{0}", idx)
});
}
block.Add(new BaseAst {
Token = TokenTypes.Identifier, AstType = AstNodeTypes.Label, TokenText = string.Format("$IfTrue{0}", idx)
});
block.AddRange(ConvertStatement(node.IfBody));
GotoAst gt = new GotoAst {
Token = TokenTypes.GotoRW, AstType = AstNodeTypes.Goto, TokenText = "goto", Label = string.Format("$IfEnd{0}", idx)
};
block.Add(gt);
node.ConvertIfEndBody = gt;
if (node.ElseBody != null)
{
block.Add(new BaseAst {
Token = TokenTypes.Identifier, AstType = AstNodeTypes.Label, TokenText = string.Format("$IfFalse{0}", idx)
});
block.AddRange(ConvertStatement(node.ElseBody));
gt = new GotoAst {
Token = TokenTypes.GotoRW, AstType = AstNodeTypes.Goto, TokenText = "goto", Label = string.Format("$IfEnd{0}", idx)
};
block.Add(gt);
node.ConvertElseEndBody = gt;
}
block.Add(new BaseAst {
Token = TokenTypes.Identifier, AstType = AstNodeTypes.Label, TokenText = string.Format("$IfEnd{0}", idx)
});
return(block);
}