public override void visit(while_node wn)
{
var b = HasStatementVisitor <yield_node> .Has(wn);
if (!b)
{
return;
}
var gotoBreak = goto_statement.New;
var gotoContinue = goto_statement.New;
ReplaceBreakContinueWithGotoLabelVisitor replaceBreakContinueVis = new ReplaceBreakContinueWithGotoLabelVisitor(gotoContinue, gotoBreak);
wn.statements.visit(replaceBreakContinueVis);
ProcessNode(wn.statements);
statement if0;
//if (wn.expr is ident && (wn.expr as ident).name.ToLower() == "true")
// if0 = gotoBreak;
//else
if0 = new if_node(un_expr.Not(wn.expr), gotoBreak);
var lb2 = new labeled_statement(gotoContinue.label, if0); // continue
var lb1 = new labeled_statement(gotoBreak.label); // break
ReplaceStatement(wn, SeqStatements(lb2, wn.statements, gotoContinue, lb1));
// в declarations ближайшего блока добавить описание labels
block bl = listNodes.FindLast(x => x is block) as block;
bl.defs.Add(new label_definitions(gotoBreak.label, gotoContinue.label));
}
public override void visit(repeat_node rn)
{
var b = HasStatementVisitor <yield_node> .Has(rn);
if (!b)
{
return;
}
var gotoContinue = goto_statement.New;
var gotoBreak = goto_statement.New;
ReplaceBreakContinueWithGotoLabelVisitor replaceBreakContinueVis = new ReplaceBreakContinueWithGotoLabelVisitor(gotoContinue, gotoBreak);
rn.statements.visit(replaceBreakContinueVis);
ProcessNode(rn.statements);
var gotoContinueIfNotCondition = new if_node(un_expr.Not(rn.expr), gotoContinue);
var continueLabeledStatement = new labeled_statement(gotoContinue.label, new statement_list(rn.statements, gotoContinueIfNotCondition));
var breakLabeledStatement = new labeled_statement(gotoBreak.label);
ReplaceStatement(rn, SeqStatements(gotoContinue, continueLabeledStatement, breakLabeledStatement));
// в declarations ближайшего блока добавить описание labels
block bl = listNodes.FindLast(x => x is block) as block;
bl.defs.Add(new label_definitions(gotoContinue.label, gotoBreak.label));
}
public static bool Has(syntax_tree_node node)
{
HasStatementVisitor <T> vis = new HasStatementVisitor <T>();
vis.ProcessNode(node);
return(vis.foundT);
}
public override void visit(if_node ifn)
{
ProcessNode(ifn.then_body);
ProcessNode(ifn.else_body);
var b = HasStatementVisitor <yield_node> .Has(ifn);
if (!b)
{
return;
}
var gtAfter = goto_statement.New;
var lbAfter = new labeled_statement(gtAfter.label);
if ((object)ifn.else_body == null)
{
var if0 = new if_node(un_expr.Not(ifn.condition), gtAfter);
//Replace(ifn, SeqStatements(gotoStartIfCondition, ifn.then_body, lbAfter));
ReplaceStatement(ifn, SeqStatements(if0, ifn.then_body, lbAfter));
// в declarations ближайшего блока добавить описание labels
block bl = listNodes.FindLast(x => x is block) as block;
bl.defs.Add(new label_definitions(gtAfter.label));
}
else
{
var gtAlt = goto_statement.New;
var lbAlt = new labeled_statement(gtAlt.label, ifn.else_body);
var if0 = new if_node(un_expr.Not(ifn.condition), gtAlt);
ReplaceStatement(ifn, SeqStatements(if0, ifn.then_body, gtAfter, lbAlt, lbAfter));
// в declarations ближайшего блока добавить описание labels
block bl = listNodes.FindLast(x => x is block) as block;
bl.defs.Add(new label_definitions(gtAfter.label, gtAlt.label));
}
}
public override void visit(for_node fn)
{
var b = HasStatementVisitor <yield_node> .Has(fn);
if (!b)
{
return;
}
var gotoContinue = goto_statement.New;
var gotoBreak = goto_statement.New;
var gotoStart = goto_statement.New;
ReplaceBreakContinueWithGotoLabelVisitor replaceBreakContinueVis = new ReplaceBreakContinueWithGotoLabelVisitor(gotoContinue, gotoBreak);
fn.statements.visit(replaceBreakContinueVis);
ProcessNode(fn.statements);
var newNames = this.NewVarNames(fn.loop_variable);
var newLoopVar = fn.create_loop_variable ? new ident(newNames.VarName) : fn.loop_variable;
// Нужно заменить fn.loop_variable -> newLoopVar в теле цикла
var replacerVis = new ReplaceVariableNameVisitor(fn.loop_variable, newLoopVar);
fn.visit(replacerVis);
fn.loop_variable = newLoopVar;
var endtemp = new ident(newNames.VarEndName); //new ident(newVarName());
//var ass1 = new var_statement(fn.loop_variable, fn.type_name, fn.initial_value);
//var ass1 = new var_statement(fn.loop_variable, fn.type_name, fn.initial_value);
//var ass2 = new var_statement(endtemp, fn.type_name, fn.finish_value);
// frninja 05/06/16 - фиксим для !fn.create_variable
var ass1 = fn.create_loop_variable
? new var_statement(fn.loop_variable, fn.type_name, fn.initial_value) as statement
: new assign(fn.loop_variable, fn.initial_value) as statement;
var if0 = new if_node((fn.cycle_type == for_cycle_type.to) ?
bin_expr.Greater(fn.loop_variable, fn.finish_value) :
bin_expr.Less(fn.loop_variable, fn.finish_value), gotoBreak);
var lb2 = new labeled_statement(gotoStart.label, if0);
var lb1 = new labeled_statement(gotoBreak.label);
var Inc = new procedure_call(new method_call((fn.cycle_type == for_cycle_type.to) ?
new ident("Inc") :
new ident("Dec"), new expression_list(fn.loop_variable)));
var lbInc = new labeled_statement(gotoContinue.label, Inc);
ReplaceStatement(fn, SeqStatements(ass1, lb2, fn.statements, lbInc, gotoStart, lb1));
// в declarations ближайшего блока добавить описание labels
block bl = listNodes.FindLast(x => x is block) as block;
bl.defs.Add(new label_definitions(gotoContinue.label, gotoBreak.label, gotoStart.label));
}
// frninja 30/05/16
public override void visit(case_node csn)
{
var b = HasStatementVisitor <yield_node> .Has(csn);
if (!b)
{
return;
}
/*
*
* case i of
* cv1: bla1;
* cv2: bla2;
* ..
* cvN: blaN;
* else: bla_else;
*
* --->
*
* if i satisfy cv1
* then bla1
* else if i satisfy cv2
* then bla2
* ..
* else if i satisfy cvN
* then blaN
* else bla_else
*
*/
if_node currentIfNode = null;
statement currentIfElseClause = (csn.else_statement != null) ? csn.else_statement :new statement_list(new empty_statement());;
for (int i = csn.conditions.variants.Count - 1; i >= 0; --i)
{
case_variant cv = csn.conditions.variants[i];
ProcessNode(cv.exec_if_true);
var ifCondition = this.CreateConditionFromCaseVariant(csn.param, cv.conditions);
currentIfNode = new if_node(ifCondition, new statement_list(cv.exec_if_true), new statement_list(currentIfElseClause));
currentIfElseClause = currentIfNode;
}
if_node finalIfNode = currentIfNode;
if (finalIfNode == null) // SSM - значит, в цикл мы не заходили и у case отсутствуют все ветви кроме else - поскольку yieldы в case есть
{
ReplaceStatement(csn, csn.else_statement);
}
else
{
ReplaceStatement(csn, finalIfNode);
}
if (finalIfNode != null)
{
visit(finalIfNode);
}
}
