public void BuildBody(
EmitSyntax emit,
LanguageData data,
Ref<Args> tokenId,
Ref<Args> oldValue,
Ref<Args> newValue,
Ref<Args> ctx,
Ref<Args> lookbackStart)
{
var mergers = data.Grammar.Mergers;
if (mergers.Count == 0)
{
emit
.Ldarg(oldValue)
.Ret();
return;
}
var contextResolverCode = new ContextCode(
emit,
il => il.Ldarg(ctx),
il => il.Ldarg(lookbackStart),
data,
data.Grammar.GlobalContextProvider,
data.LocalParseContexts);
IActionCode code = new MergeCode(emit, contextResolverCode)
{
LoadOldValue = il => il.Ldarg(oldValue),
LoadNewValue = il => il.Ldarg(newValue),
};
var tokenToRuleIndex = new MutableIntMap<int>(
mergers.Select(
merger =>
new IntArrow<int>(merger.Symbol.Index, merger.Index)));
tokenToRuleIndex.DefaultValue = -1;
var ids = mergers.Select(m => m.Symbol.Index);
IntInterval possibleBounds = new IntInterval(ids.Min(), ids.Max());
var switchGenerator = SwitchGenerator.Sparse(tokenToRuleIndex, possibleBounds);
switchGenerator.Build(
emit,
il => il.Ldarg(tokenId),
(il, value) =>
{
if (value < 0)
{
emit
.Ldarg(newValue)
.Ret();
}
else
{
var merger = mergers[value];
var binding = merger.Joint.The<CilMerger>();
code = code
.Do(binding.Context.Load)
.Do(binding.ActionBuilder)
.Emit(il2 => il2.Ret())
;
}
});
emit
.Ret();
}
public void BuildBody(
EmitSyntax emit,
LanguageData data,
Ref <Args> tokenId,
Ref <Args> oldValue,
Ref <Args> newValue,
Ref <Args> ctx,
Ref <Args> lookbackStart)
{
var mergers = data.Grammar.Mergers;
if (mergers.Count == 0)
{
emit
.Ldarg(oldValue)
.Ret();
return;
}
var contextResolverCode = new ContextCode(
emit,
il => il.Ldarg(ctx),
il => il.Ldarg(lookbackStart),
data,
data.Grammar.GlobalContextProvider,
data.LocalParseContexts);
IActionCode code = new MergeCode(emit, contextResolverCode)
{
LoadOldValue = il => il.Ldarg(oldValue),
LoadNewValue = il => il.Ldarg(newValue),
};
var tokenToRuleIndex = new MutableIntMap <int>(
mergers.Select(
merger =>
new IntArrow <int>(merger.Symbol.Index, merger.Index)));
tokenToRuleIndex.DefaultValue = -1;
var ids = mergers.Select(m => m.Symbol.Index);
IntInterval possibleBounds = new IntInterval(ids.Min(), ids.Max());
var switchGenerator = SwitchGenerator.Sparse(tokenToRuleIndex, possibleBounds);
switchGenerator.Build(
emit,
il => il.Ldarg(tokenId),
(il, value) =>
{
if (value < 0)
{
emit
.Ldarg(newValue)
.Ret();
}
else
{
var merger = mergers[value];
var binding = merger.Joint.The <CilMerger>();
code = code
.Do(binding.Context.Load)
.Do(binding.ActionBuilder)
.Emit(il2 => il2.Ret())
;
}
});
emit
.Ret();
}
