private static void GenerateThrowStatement(ScriptGenerator generator, MemberSymbol symbol,
ThrowStatement statement)
{
ScriptTextWriter writer = generator.Writer;
writer.Write("throw ");
ExpressionGenerator.GenerateExpression(generator, symbol, statement.Value);
writer.WriteLine(";");
}
private static void GenerateExpressionStatement(ScriptGenerator generator, MemberSymbol symbol,
ExpressionStatement statement)
{
ScriptTextWriter writer = generator.Writer;
ExpressionGenerator.GenerateExpression(generator, symbol, statement.Expression);
if (statement.IsFragment == false)
{
writer.Write(";");
writer.WriteLine();
}
}
private static void GenerateIfElseStatement(ScriptGenerator generator, MemberSymbol symbol,
IfElseStatement statement)
{
if (statement.IfStatement == null && statement.ElseStatement == null)
{
return;
}
ScriptTextWriter writer = generator.Writer;
writer.Write("if (");
ExpressionGenerator.GenerateExpression(generator, symbol, statement.Condition);
writer.WriteLine(") {");
if (statement.IfStatement != null)
{
writer.Indent++;
GenerateStatement(generator, symbol, statement.IfStatement);
writer.Indent--;
}
writer.Write("}");
writer.WriteLine();
if (statement.ElseStatement != null)
{
bool writeEndBlock = false;
if (statement.ElseStatement is IfElseStatement)
{
writer.Write("else ");
}
else
{
writer.WriteLine("else {");
writeEndBlock = true;
writer.Indent++;
}
GenerateStatement(generator, symbol, statement.ElseStatement);
if (writeEndBlock)
{
writer.Indent--;
writer.WriteLine("}");
}
}
}
private static void GenerateReturnStatement(ScriptGenerator generator, MemberSymbol symbol,
ReturnStatement statement)
{
ScriptTextWriter writer = generator.Writer;
if (statement.Value != null)
{
writer.Write("return ");
ExpressionGenerator.GenerateExpression(generator, symbol, statement.Value);
writer.WriteLine(";");
}
else
{
writer.WriteLine("return;");
}
}
private static void GenerateForStatement(ScriptGenerator generator, MemberSymbol symbol, ForStatement statement)
{
if (statement.Body == null)
{
return;
}
ScriptTextWriter writer = generator.Writer;
writer.Write("for ");
writer.Write("(");
if (statement.Initializers != null)
{
ExpressionGenerator.GenerateExpressionList(generator, symbol, statement.Initializers);
}
else if (statement.Variables != null)
{
GenerateVariableDeclarations(generator, symbol, statement.Variables);
}
writer.Write("; ");
if (statement.Condition != null)
{
ExpressionGenerator.GenerateExpression(generator, symbol, statement.Condition);
}
writer.Write("; ");
if (statement.Increments != null)
{
ExpressionGenerator.GenerateExpressionList(generator, symbol, statement.Increments);
}
writer.WriteLine(") {");
writer.Indent++;
GenerateStatement(generator, symbol, statement.Body);
writer.Indent--;
writer.Write("}");
writer.WriteLine();
}
private static void GenerateSwitchStatement(ScriptGenerator generator, MemberSymbol symbol,
SwitchStatement statement)
{
ScriptTextWriter writer = generator.Writer;
writer.Write("switch (");
ExpressionGenerator.GenerateExpression(generator, symbol, statement.Condition);
writer.WriteLine(") {");
writer.Indent++;
foreach (SwitchGroup group in statement.Groups)
{
if (group.Cases != null)
{
foreach (Expression caseExpression in group.Cases)
{
writer.Write("case ");
ExpressionGenerator.GenerateExpression(generator, symbol, caseExpression);
writer.WriteLine(":");
}
}
if (group.IncludeDefault)
{
writer.WriteLine("default:");
}
writer.Indent++;
foreach (Statement childStatement in group.Statements)
{
GenerateStatement(generator, symbol, childStatement);
}
writer.Indent--;
}
writer.Indent--;
writer.WriteLine("}");
}
private static void GenerateWhileStatement(ScriptGenerator generator, MemberSymbol symbol,
WhileStatement statement)
{
if (statement.Body == null)
{
return;
}
ScriptTextWriter writer = generator.Writer;
if (statement.PreCondition)
{
writer.Write("while (");
ExpressionGenerator.GenerateExpression(generator, symbol, statement.Condition);
writer.WriteLine(") {");
}
else
{
writer.WriteLine("do {");
}
writer.Indent++;
GenerateStatement(generator, symbol, statement.Body);
writer.Indent--;
if (statement.PreCondition)
{
writer.WriteLine("}");
}
else
{
writer.Write("} while (");
ExpressionGenerator.GenerateExpression(generator, symbol, statement.Condition);
writer.WriteLine(");");
}
}
private static void GenerateForInStatement(ScriptGenerator generator, MemberSymbol symbol,
ForInStatement statement)
{
ScriptTextWriter writer = generator.Writer;
TypeSymbol evaluatedType = statement.CollectionExpression.EvaluatedType;
if (statement.IsDictionaryEnumeration)
{
if (statement.DictionaryVariable != null)
{
writer.Write("var ");
writer.Write(statement.DictionaryVariable.GeneratedName);
writer.Write(" = ");
ExpressionGenerator.GenerateExpression(generator, symbol, statement.CollectionExpression);
writer.Write(";");
writer.WriteLine();
}
writer.Write("for (var ");
writer.Write(statement.LoopVariable.GeneratedName);
writer.Write(" in ");
if (statement.DictionaryVariable != null)
{
writer.Write(statement.DictionaryVariable.GeneratedName);
}
else
{
ExpressionGenerator.GenerateExpression(generator, symbol, statement.CollectionExpression);
}
writer.WriteLine(") {");
writer.Indent++;
writer.Write("var ");
writer.Write(statement.ItemVariable.GeneratedName);
writer.Write(" = { key: ");
writer.Write(statement.LoopVariable.GeneratedName);
writer.Write(", value: ");
if (statement.DictionaryVariable != null)
{
writer.Write(statement.DictionaryVariable.GeneratedName);
}
else
{
ExpressionGenerator.GenerateExpression(generator, symbol, statement.CollectionExpression);
}
writer.Write("[");
writer.Write(statement.LoopVariable.GeneratedName);
writer.WriteLine("] };");
GenerateStatement(generator, symbol, statement.Body);
writer.Indent--;
writer.WriteLine("}");
}
else if (evaluatedType.IsNativeArray || evaluatedType.IsListType())
{
string dataSourceVariableName = statement.LoopVariable.GeneratedName;
string indexVariableName = dataSourceVariableName + "_index";
// var $$ = ({CollectionExpression});
writer.Write("var " + dataSourceVariableName + " = (");
ExpressionGenerator.GenerateExpression(generator, symbol, statement.CollectionExpression);
writer.WriteLine(");");
// for(var items_index = 0; items_index < items.length; ++items_index) {
writer.WriteLine("for(var " + indexVariableName + " = 0; " + indexVariableName + " < " + dataSourceVariableName + ".length; ++" + indexVariableName + ") {");
++writer.Indent;
if (evaluatedType.IsNativeArray)
{
// var i = items[items_index];
writer.WriteLine("var " + statement.ItemVariable.GeneratedName + " = " + dataSourceVariableName + "[" + indexVariableName + "];");
}
else
{
// var i = ss.getItem(items, items_index);
writer.WriteLine("var " + statement.ItemVariable.GeneratedName + " = ss.getItem(" + dataSourceVariableName + ", " + indexVariableName + ");");
}
GenerateStatement(generator, symbol, statement.Body);
--writer.Indent;
writer.WriteLine("}");
}
else
{
writer.Write("var ");
writer.Write(statement.LoopVariable.GeneratedName);
writer.Write(" = ");
writer.Write($"{DSharpStringResources.ScriptExportMember("enumerate")}(");
ExpressionGenerator.GenerateExpression(generator, symbol, statement.CollectionExpression);
writer.Write(");");
writer.WriteLine();
writer.Write("while (");
writer.Write(statement.LoopVariable.GeneratedName);
writer.WriteLine(".moveNext()) {");
writer.Indent++;
writer.Write("var ");
writer.Write(statement.ItemVariable.GeneratedName);
writer.Write(" = ");
writer.Write(statement.LoopVariable.GeneratedName);
writer.Write(".current;");
writer.WriteLine();
GenerateStatement(generator, symbol, statement.Body);
writer.Indent--;
writer.Write("}");
writer.WriteLine();
}
}
