public override void Emit(SourceBuilder sourceCode)
{
string targetPatternElement = Type == EntityType.Variable ? NamesOfEntities.Variable(TargetPatternElementName) : NamesOfEntities.CandidateVariable(TargetPatternElementName);
if (SourcePatternElementUnprefixedName != null)
{
string sourcePatternElement = NamesOfEntities.MatchName(SourcePatternElementUnprefixedName, Type);
sourceCode.AppendFrontFormat("{0} = {1}._{2}; // bubble up (from match)\n",
targetPatternElement, NestedMatchOrTaskObjectName, sourcePatternElement);
}
else
{
sourceCode.AppendFrontFormat("{0} = {1}.{0}; // bubble up (from task)\n",
targetPatternElement, NestedMatchOrTaskObjectName);
}
}
public override void Emit(SourceBuilder sourceCode)
{
if (sourceCode.CommentSourceCode)
{
sourceCode.AppendFront("// Check whether a duplicate match to be purged was found or will be found\n");
}
// emit hash variable declaration
sourceCode.AppendFrontFormat("int {0} = 0;\n", NamesOfEntities.DuplicateMatchHashVariable());
// only do the rest if more than one match is requested
sourceCode.AppendFront("if(maxMatches!=1) {\n");
sourceCode.Indent();
// emit found matches hash map initialization as needed
sourceCode.AppendFrontFormat("if({0}==null) {0} = new Dictionary<int, {1}>();\n",
NamesOfEntities.FoundMatchesForFilteringVariable(),
RulePatternClassName + "." + NamesOfEntities.MatchClassName(PatternName));
// emit hash variable initialization with result of hash computation
sourceCode.AppendFrontFormat("{0} = unchecked(",
NamesOfEntities.DuplicateMatchHashVariable());
EmitHashComputation(sourceCode, NeededElements.Length - 1);
sourceCode.Append(");\n");
// emit check whether hash is contained in found matches hash map
sourceCode.AppendFrontFormat("if({0}.ContainsKey({1}))\n",
NamesOfEntities.FoundMatchesForFilteringVariable(),
NamesOfEntities.DuplicateMatchHashVariable());
sourceCode.AppendFront("{\n");
sourceCode.Indent();
// emit check whether one of the matches in the hash map with same hash is equal to the locally matched elements
sourceCode.AppendFrontFormat("{0} {1} = {2}[{3}];\n",
RulePatternClassName + "." + NamesOfEntities.MatchClassName(PatternName),
NamesOfEntities.DuplicateMatchCandidateVariable(),
NamesOfEntities.FoundMatchesForFilteringVariable(),
NamesOfEntities.DuplicateMatchHashVariable());
sourceCode.AppendFront("do {\n");
sourceCode.Indent();
// emit check for same elements
sourceCode.AppendFront("if(");
for (int i = 0; i < NeededElements.Length; ++i)
{
if (i != 0)
{
sourceCode.Append(" && ");
}
sourceCode.AppendFormat("{0}._{1} == {2}",
NamesOfEntities.DuplicateMatchCandidateVariable() + MatchObjectPaths[i],
NamesOfEntities.MatchName(NeededElementsUnprefixedName[i], NeededElementsIsNode[i] ? BuildMatchObjectType.Node : BuildMatchObjectType.Edge),
NamesOfEntities.CandidateVariable(NeededElements[i]));
}
sourceCode.Append(")\n");
// emit check failed code, i.e. the current local match is equivalent to one of the already found ones, a duplicate
sourceCode.AppendFront("{\n");
sourceCode.Indent();
CheckFailedOperations.Emit(sourceCode);
sourceCode.Unindent();
sourceCode.AppendFront("}\n");
// close "emit check whether one of the matches in the hash map with same hash is equal to the locally matched elements"
// switching to next match with the same hash, if available
sourceCode.Unindent();
sourceCode.AppendFront("} ");
sourceCode.AppendFormat("while(({0} = {0}.nextWithSameHash) != null);\n",
NamesOfEntities.DuplicateMatchCandidateVariable());
// close "emit check whether hash is contained in found matches hash map"
sourceCode.Unindent();
sourceCode.AppendFront("}\n");
// close "only do the rest if more than one match is requested"
sourceCode.Unindent();
sourceCode.AppendFront("}\n");
}
public override void Emit(SourceBuilder sourceCode)
{
string matchName = NamesOfEntities.MatchName(PatternElementUnprefixedName, Type);
if (Type == BuildMatchObjectType.Node || Type == BuildMatchObjectType.Edge)
{
string variableContainingCandidate = NamesOfEntities.CandidateVariable(PatternElementName);
sourceCode.AppendFrontFormat("{0}._{1} = {2};\n",
MatchObjectName, matchName, variableContainingCandidate);
}
else if (Type == BuildMatchObjectType.Variable)
{
string variableName = NamesOfEntities.Variable(PatternElementName);
sourceCode.AppendFrontFormat("{0}._{1} = {2};\n",
MatchObjectName, matchName, variableName);
}
else if (Type == BuildMatchObjectType.Subpattern)
{
sourceCode.AppendFrontFormat("{0}._{1} = (@{2})currentFoundPartialMatch.Pop();\n",
MatchObjectName, matchName, PatternElementType);
sourceCode.AppendFrontFormat("{0}._{1}._matchOfEnclosingPattern = {0};\n",
MatchObjectName, matchName);
}
else if (Type == BuildMatchObjectType.InlinedSubpattern)
{
sourceCode.AppendFrontFormat("{0}._{1} = match_{2};\n",
MatchObjectName, matchName, PatternElementName);
}
else if (Type == BuildMatchObjectType.Iteration)
{
sourceCode.AppendFrontFormat("{0}._{1} = new GRGEN_LGSP.LGSPMatchesList<{2}.{3}, {2}.{4}>(null);\n",
MatchObjectName, matchName,
RulePatternClassName, NamesOfEntities.MatchClassName(PatternElementType), NamesOfEntities.MatchInterfaceName(PatternElementType));
sourceCode.AppendFrontFormat("while(currentFoundPartialMatch.Count>0 && currentFoundPartialMatch.Peek() is {0}.{1}) ",
RulePatternClassName, NamesOfEntities.MatchInterfaceName(PatternElementType));
sourceCode.Append("{\n");
sourceCode.Indent();
sourceCode.AppendFrontFormat("{0}.{1} cfpm = ({0}.{1})currentFoundPartialMatch.Pop();\n",
RulePatternClassName, NamesOfEntities.MatchClassName(PatternElementType));
sourceCode.AppendFront("if(cfpm.IsNullMatch) break;\n");
sourceCode.AppendFrontFormat("cfpm.SetMatchOfEnclosingPattern({0});\n",
MatchObjectName);
sourceCode.AppendFrontFormat("{0}._{1}.Add(cfpm);\n",
MatchObjectName, matchName);
sourceCode.Unindent();
sourceCode.AppendFront("}\n");
}
else if (Type == BuildMatchObjectType.Alternative)
{
sourceCode.AppendFrontFormat("{0}._{1} = ({2}.{3})currentFoundPartialMatch.Pop();\n",
MatchObjectName, matchName, RulePatternClassName, NamesOfEntities.MatchInterfaceName(PatternElementType));
sourceCode.AppendFrontFormat("{0}._{1}.SetMatchOfEnclosingPattern({0});\n",
MatchObjectName, matchName);
}
else //if(Type == BuildMatchObjectType.Independent)
{
sourceCode.AppendFrontFormat("{0}._{1} = {2};\n",
MatchObjectName, matchName, NamesOfEntities.MatchedIndependentVariable(PatternElementName));
sourceCode.AppendFrontFormat("{0} = new {1}({0});\n",
NamesOfEntities.MatchedIndependentVariable(PatternElementName),
RulePatternClassName + "." + NamesOfEntities.MatchClassName(MatchClassName));
sourceCode.AppendFrontFormat("{0}._{1}.SetMatchOfEnclosingPattern({0});\n",
MatchObjectName, matchName);
}
}