X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.scl.compiler%2Fsrc%2Forg%2Fsimantics%2Fscl%2Fcompiler%2Felaboration%2Fchr%2Fplan%2FMatchOp.java;fp=bundles%2Forg.simantics.scl.compiler%2Fsrc%2Forg%2Fsimantics%2Fscl%2Fcompiler%2Felaboration%2Fchr%2Fplan%2FMatchOp.java;h=aac4a94efaf154d6f36946e59a804c555bad62dd;hb=a8758de5bc19e5adb3f618d3038743a164f09912;hp=0000000000000000000000000000000000000000;hpb=12d9af17384d960b75d58c3935d2b7b46d93e87b;p=simantics%2Fplatform.git diff --git a/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/chr/plan/MatchOp.java b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/chr/plan/MatchOp.java new file mode 100644 index 000000000..aac4a94ef --- /dev/null +++ b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/chr/plan/MatchOp.java @@ -0,0 +1,46 @@ +package org.simantics.scl.compiler.elaboration.chr.plan; + +import java.util.ArrayList; + +import org.simantics.scl.compiler.compilation.CompilationContext; +import org.simantics.scl.compiler.elaboration.expressions.Expression; +import org.simantics.scl.compiler.internal.codegen.references.IVal; +import org.simantics.scl.compiler.internal.codegen.writer.CodeWriter; +import org.simantics.scl.compiler.internal.elaboration.matching2.PatternMatchingCompiler2; +import org.simantics.scl.compiler.internal.elaboration.matching2.Row2; + +public class MatchOp extends PlanOp { + public Expression scrutinee; + public Expression pattern; + + public MatchOp(long location, Expression scrutinee, Expression pattern) { + super(location); + this.scrutinee = scrutinee; + this.pattern = pattern; + } + + @Override + public void toString(StringBuilder b) { + b.append("MATCH ").append(pattern).append(" = ").append(scrutinee); + } + + @Override + public void generateCode(CompilationContext context, PlanContext planContext, CodeWriter w) { + CodeWriter body = w.createBlock(); + CodeWriter end = w.createBlock(); + + IVal[] scrutineeVals = new IVal[1]; + scrutineeVals[0] = scrutinee.toVal(context.environment, w); + + ArrayList rows = new ArrayList(1); + rows.add(new Row2(new Expression[] {pattern}, body.getContinuation())); + + PatternMatchingCompiler2.split(w, context.environment, scrutineeVals, end.getContinuation(), rows); + + planContext.nextOp(body); + if(body.isUnfinished()) + body.jump(end.getContinuation()); + + w.continueAs(end); + } +}