本文整理汇总了C#中BlockExpression.GetExpression方法的典型用法代码示例。如果您正苦于以下问题：C# BlockExpression.GetExpression方法的具体用法？C# BlockExpression.GetExpression怎么用？C# BlockExpression.GetExpression使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类BlockExpression的用法示例。
在下文中一共展示了BlockExpression.GetExpression方法的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: Emit
private void Emit(BlockExpression node, EmitAs emitAs) {
EnterScope(node);
int count = node.ExpressionCount;
for (int index = 0; index < count - 1; index++) {
var e = node.GetExpression(index);
if (_emitDebugSymbols) {
//No need to emit a clearance if the next expression in the block is also a
//DebugInfoExprssion.
var debugInfo = e as DebugInfoExpression;
if (debugInfo != null && debugInfo.IsClear && node.GetExpression(index + 1) is DebugInfoExpression) {
continue;
}
}
EmitExpressionAsVoid(e);
}
// if the type of Block it means this is not a Comma
// so we will force the last expression to emit as void.
if (emitAs == EmitAs.Void || node.Type == typeof(void)) {
EmitExpressionAsVoid(node.GetExpression(count - 1));
} else {
EmitExpressionAsType(node.GetExpression(count - 1), node.Type);
}
ExitScope(node);
}示例2: Emit
private void Emit(BlockExpression node, CompilationFlags flags)
{
int count = node.ExpressionCount;
if (count == 0)
{
return;
}
EnterScope(node);
CompilationFlags emitAs = flags & CompilationFlags.EmitAsTypeMask;
CompilationFlags tailCall = flags & CompilationFlags.EmitAsTailCallMask;
for (int index = 0; index < count - 1; index++)
{
var e = node.GetExpression(index);
var next = node.GetExpression(index + 1);
CompilationFlags tailCallFlag;
if (tailCall != CompilationFlags.EmitAsNoTail)
{
var g = next as GotoExpression;
if (g != null && (g.Value == null || !Significant(g.Value)) && ReferenceLabel(g.Target).CanReturn)
{
// Since tail call flags are not passed into EmitTryExpression, CanReturn means the goto will be emitted
// as Ret. Therefore we can emit the current expression with tail call.
tailCallFlag = CompilationFlags.EmitAsTail;
}
else
{
// In the middle of the block.
// We may do better here by marking it as Tail if the following expressions are not going to emit any IL.
tailCallFlag = CompilationFlags.EmitAsMiddle;
}
}
else
{
tailCallFlag = CompilationFlags.EmitAsNoTail;
}
flags = UpdateEmitAsTailCallFlag(flags, tailCallFlag);
EmitExpressionAsVoid(e, flags);
}
// if the type of Block it means this is not a Comma
// so we will force the last expression to emit as void.
// We don't need EmitAsType flag anymore, should only pass
// the EmitTailCall field in flags to emitting the last expression.
if (emitAs == CompilationFlags.EmitAsVoidType || node.Type == typeof(void))
{
EmitExpressionAsVoid(node.GetExpression(count - 1), tailCall);
}
else
{
EmitExpressionAsType(node.GetExpression(count - 1), node.Type, tailCall);
}
ExitScope(node);
}示例3: Emit
private void Emit(BlockExpression node, EmitAs emitAs) {
int count = node.ExpressionCount;
// Labels defined immediately in the block are valid for the whole block
for(int i = 0; i < count; i++) {
Expression e = node.GetExpression(i);
var label = e as LabelExpression;
if (label != null) {
DefineLabel(label.Label);
}
}
EnterScope(node);
for (int index = 0; index < count - 1; index++) {
EmitExpressionAsVoid(node.GetExpression(index));
}
// if the type of Block it means this is not a Comma
// so we will force the last expression to emit as void.
if (emitAs == EmitAs.Void || node.Type == typeof(void)) {
EmitExpressionAsVoid(node.GetExpression(count - 1));
} else {
EmitExpression(node.GetExpression(count - 1));
}
ExitScope(node);
}示例4: Emit
private void Emit(BlockExpression node, CompilationFlags flags) {
EnterScope(node);
CompilationFlags emitAs = flags & CompilationFlags.EmitAsTypeMask;
int count = node.ExpressionCount;
CompilationFlags tailCall = flags & CompilationFlags.EmitAsTailCallMask;
CompilationFlags middleTailCall = tailCall == CompilationFlags.EmitAsNoTail ? CompilationFlags.EmitAsNoTail : CompilationFlags.EmitAsMiddle;
for (int index = 0; index < count - 1; index++) {
var e = node.GetExpression(index);
var next = node.GetExpression(index + 1);
if (EmitDebugSymbols) {
// No need to emit a clearance if the next expression in the block is also a
// DebugInfoExprssion.
var debugInfo = e as DebugInfoExpression;
if (debugInfo != null && debugInfo.IsClear && next is DebugInfoExpression) {
continue;
}
}
// In the middle of the block.
// We may do better here by marking it as Tail if the following expressions are not going to emit any IL.
var tailCallFlag = middleTailCall;
var g = next as GotoExpression;
if (g != null && (g.Value == null || !Significant(g.Value))) {
var labelInfo = ReferenceLabel(g.Target);
if (labelInfo.CanReturn) {
// Since tail call flags are not passed into EmitTryExpression, CanReturn means the goto will be emitted
// as Ret. Therefore we can emit the current expression with tail call.
tailCallFlag = CompilationFlags.EmitAsTail;
}
}
flags = UpdateEmitAsTailCallFlag(flags, tailCallFlag);
EmitExpressionAsVoid(e, flags);
}
// if the type of Block it means this is not a Comma
// so we will force the last expression to emit as void.
// We don't need EmitAsType flag anymore, should only pass
// the EmitTailCall field in flags to emitting the last expression.
if (emitAs == CompilationFlags.EmitAsVoidType || node.Type == typeof(void)) {
EmitExpressionAsVoid(node.GetExpression(count - 1), tailCall);
} else {
EmitExpressionAsType(node.GetExpression(count - 1), node.Type, tailCall);
}
ExitScope(node);
}示例5: EmitBranchBlock
private void EmitBranchBlock(bool branch, BlockExpression node, Label label) {
EnterScope(node);
int count = node.ExpressionCount;
for (int i = 0; i < count - 1; i++) {
EmitExpressionAsVoid(node.GetExpression(i));
}
EmitExpressionAndBranch(branch, node.GetExpression(count - 1), label);
ExitScope(node);
}