--- /dev/null
+package org.simantics.scl.compiler.elaboration.expressions;\r
+\r
+import gnu.trove.map.hash.TObjectIntHashMap;\r
+import gnu.trove.set.hash.THashSet;\r
+import gnu.trove.set.hash.TIntHashSet;\r
+\r
+import org.simantics.scl.compiler.elaboration.contexts.ReplaceContext;\r
+import org.simantics.scl.compiler.elaboration.contexts.SimplificationContext;\r
+import org.simantics.scl.compiler.elaboration.contexts.TranslationContext;\r
+import org.simantics.scl.compiler.elaboration.contexts.TypingContext;\r
+import org.simantics.scl.compiler.environment.Environment;\r
+import org.simantics.scl.compiler.errors.Locations;\r
+import org.simantics.scl.compiler.internal.codegen.references.IVal;\r
+import org.simantics.scl.compiler.internal.codegen.writer.CodeWriter;\r
+import org.simantics.scl.compiler.internal.elaboration.utils.ExpressionDecorator;\r
+import org.simantics.scl.compiler.internal.interpreted.IExpression;\r
+import org.simantics.scl.compiler.internal.interpreted.IIf;\r
+import org.simantics.scl.compiler.top.ExpressionInterpretationContext;\r
+import org.simantics.scl.compiler.types.Type;\r
+import org.simantics.scl.compiler.types.Types;\r
+import org.simantics.scl.compiler.types.exceptions.MatchException;\r
+\r
+public class EIf extends Expression {\r
+ public Expression condition;\r
+ public Expression then_;\r
+ public Expression else_;\r
+ \r
+ public EIf(Expression condition, Expression then_, Expression else_) {\r
+ this.condition = condition;\r
+ this.then_ = then_;\r
+ this.else_ = else_;\r
+ }\r
+\r
+ public EIf(long loc, Expression condition, Expression then_, Expression else_) {\r
+ super(loc);\r
+ this.condition = condition;\r
+ this.then_ = then_;\r
+ this.else_ = else_;\r
+ }\r
+\r
+ public void collectRefs(TObjectIntHashMap<Object> allRefs, TIntHashSet refs) {\r
+ condition.collectRefs(allRefs, refs);\r
+ then_.collectRefs(allRefs, refs);\r
+ else_.collectRefs(allRefs, refs);\r
+ }\r
+\r
+ @Override\r
+ public void collectVars(TObjectIntHashMap<Variable> allVars,\r
+ TIntHashSet vars) {\r
+ condition.collectVars(allVars, vars);\r
+ then_.collectVars(allVars, vars);\r
+ else_.collectVars(allVars, vars);\r
+ }\r
+\r
+ @Override\r
+ protected void updateType() throws MatchException {\r
+ setType(then_.getType());\r
+ }\r
+ \r
+ @Override\r
+ public IVal toVal(Environment env, CodeWriter w) {\r
+ IVal conditionVal = condition.toVal(env, w); \r
+ \r
+ CodeWriter thenBlock = w.createBlock();\r
+ CodeWriter elseBlock = w.createBlock();\r
+ \r
+ CodeWriter joinPoint = w.createBlock(getType());\r
+ \r
+ w.if_(conditionVal, thenBlock.getContinuation(), elseBlock.getContinuation());\r
+ \r
+ IVal thenVal = then_.toVal(env, thenBlock);\r
+ thenBlock.jump(joinPoint.getContinuation(), thenVal);\r
+ \r
+ IVal elseVal = else_.toVal(env, elseBlock);\r
+ elseBlock.jump(joinPoint.getContinuation(), elseVal);\r
+ \r
+ w.continueAs(joinPoint);\r
+ \r
+ return w.getParameters()[0];\r
+ }\r
+\r
+ @Override\r
+ public void collectFreeVariables(THashSet<Variable> vars) {\r
+ condition.collectFreeVariables(vars);\r
+ then_.collectFreeVariables(vars);\r
+ else_.collectFreeVariables(vars);\r
+ }\r
+\r
+ @Override\r
+ public Expression simplify(SimplificationContext context) {\r
+ condition = condition.simplify(context);\r
+ then_ = then_.simplify(context);\r
+ else_ = else_.simplify(context);\r
+ return this;\r
+ }\r
+\r
+ @Override\r
+ public Expression resolve(TranslationContext context) {\r
+ condition = condition.resolve(context);\r
+ then_ = then_.resolve(context);\r
+ else_ = else_.resolve(context);\r
+ return this;\r
+ }\r
+\r
+ @Override\r
+ public Expression replace(ReplaceContext context) {\r
+ return new EIf(condition.replace(context), \r
+ then_.replace(context), \r
+ else_.replace(context));\r
+ }\r
+ \r
+ @Override\r
+ public Expression checkBasicType(TypingContext context, Type requiredType) {\r
+ condition = condition.checkType(context, Types.BOOLEAN);\r
+ then_ = then_.checkType(context, requiredType);\r
+ else_ = else_.checkType(context, requiredType);\r
+ return this;\r
+ }\r
+ \r
+ @Override\r
+ public Expression decorate(ExpressionDecorator decorator) {\r
+ condition = condition.decorate(decorator);\r
+ then_ = then_.decorate(decorator);\r
+ else_ = else_.decorate(decorator); \r
+ return decorator.decorate(this);\r
+ }\r
+ \r
+ @Override\r
+ public boolean isEffectful() {\r
+ return condition.isEffectful() || then_.isEffectful() || else_.isEffectful();\r
+ }\r
+\r
+ @Override\r
+ public void collectEffects(THashSet<Type> effects) {\r
+ condition.collectEffects(effects);\r
+ then_.collectEffects(effects);\r
+ else_.collectEffects(effects);\r
+ }\r
+ \r
+ @Override\r
+ public void setLocationDeep(long loc) {\r
+ if(location == Locations.NO_LOCATION) {\r
+ location = loc;\r
+ condition.setLocationDeep(loc);\r
+ then_.setLocationDeep(loc);\r
+ else_.setLocationDeep(loc);\r
+ }\r
+ }\r
+ \r
+ @Override\r
+ public void accept(ExpressionVisitor visitor) {\r
+ visitor.visit(this);\r
+ }\r
+ \r
+ @Override\r
+ public IExpression toIExpression(ExpressionInterpretationContext target) {\r
+ return new IIf(condition.toIExpression(target), then_.toIExpression(target), else_.toIExpression(target));\r
+ }\r
+ \r
+ public Expression getCondition() {\r
+ return condition;\r
+ }\r
+ \r
+ public Expression getThen() {\r
+ return then_;\r
+ }\r
+ \r
+ public Expression getElse() {\r
+ return else_;\r
+ }\r
+\r
+ @Override\r
+ public void forVariables(VariableProcedure procedure) {\r
+ condition.forVariables(procedure);\r
+ then_.forVariables(procedure);\r
+ else_.forVariables(procedure);\r
+ }\r
+ @Override\r
+ public Expression accept(ExpressionTransformer transformer) {\r
+ return transformer.transform(this);\r
+ }\r
+\r
+}\r
Code Review / simantics / platform.git / blobdiff