-package org.simantics.scl.compiler.elaboration.expressions;\r
-\r
-import org.simantics.scl.compiler.common.exceptions.InternalCompilerError;\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.elaboration.modules.SCLValue;\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.types.Type;\r
-import org.simantics.scl.compiler.types.Types;\r
-import org.simantics.scl.compiler.types.exceptions.MatchException;\r
-import org.simantics.scl.compiler.types.exceptions.UnificationException;\r
-import org.simantics.scl.compiler.types.kinds.Kinds;\r
-\r
-import gnu.trove.map.hash.TObjectIntHashMap;\r
-import gnu.trove.set.hash.THashSet;\r
-import gnu.trove.set.hash.TIntHashSet;\r
-\r
-public class EBind extends SimplifiableExpression {\r
- public Expression pattern;\r
- public Expression value;\r
- public Expression in;\r
- private EVariable monadEvidence;\r
- SCLValue bindFunction;\r
- Type monadType;\r
- Type valueContentType;\r
- Type inContentType;\r
- \r
- public EBind(long loc, Expression pattern, Expression value, Expression in) {\r
- super(loc);\r
- this.pattern = pattern;\r
- this.value = value;\r
- this.in = in;\r
- }\r
-\r
- public EBind(long loc, Expression pattern, Expression value, Expression in,\r
- SCLValue bindFunction) {\r
- super(loc);\r
- this.pattern = pattern;\r
- this.value = value;\r
- this.in = in;\r
- }\r
-\r
- @Override\r
- public void collectRefs(final TObjectIntHashMap<Object> allRefs, final TIntHashSet refs) {\r
- value.collectRefs(allRefs, refs);\r
- in.collectRefs(allRefs, refs);\r
- }\r
- \r
- @Override\r
- public void collectVars(TObjectIntHashMap<Variable> allVars,\r
- TIntHashSet vars) {\r
- value.collectVars(allVars, vars);\r
- in.collectVars(allVars, vars);\r
- }\r
- \r
- @Override\r
- protected void updateType() throws MatchException {\r
- setType(in.getType());\r
- }\r
- \r
- @Override\r
- public Expression checkBasicType(TypingContext context, Type requiredType) {\r
- monadType = Types.metaVar(Kinds.STAR_TO_STAR);\r
- inContentType = Types.metaVar(Kinds.STAR);\r
- Type monadContent = Types.apply(monadType, inContentType);\r
- try {\r
- Types.unify(requiredType, monadContent);\r
- } catch (UnificationException e) {\r
- context.typeError(location, requiredType, monadContent);\r
- return this;\r
- }\r
- \r
- Variable variable = new Variable("monadEvidence");\r
- variable.setType(Types.pred(Types.MONAD, monadType));\r
- monadEvidence = new EVariable(getLocation(), variable);\r
- monadEvidence.setType(variable.getType());\r
- context.addConstraintDemand(monadEvidence);\r
- \r
- pattern = pattern.checkTypeAsPattern(context, Types.metaVar(Kinds.STAR));\r
- valueContentType = pattern.getType();\r
- value = value.checkType(context, Types.apply(monadType, valueContentType));\r
- in = in.checkType(context, requiredType);\r
- Type inType = in.getType();\r
- setType(inType);\r
- return this;\r
- }\r
-\r
- @Override\r
- public IVal toVal(Environment env, CodeWriter w) {\r
- throw new InternalCompilerError("EBind should be eliminated.");\r
- }\r
-\r
- /**\r
- * Splits let \r
- */\r
- @Override\r
- public Expression simplify(SimplificationContext context) { \r
- value = value.simplify(context);\r
- in = in.simplify(context);\r
- pattern = pattern.simplify(context);\r
- \r
- long loc = getLocation();\r
- Expression simplified = new EApply(loc,\r
- new EConstant(loc, bindFunction, Types.canonical(monadType), Types.canonical(valueContentType), Types.canonical(inContentType)),\r
- monadEvidence, \r
- value,\r
- new ELambda(loc, new Case[] {\r
- new Case(new Expression[] { pattern }, in)\r
- }));\r
- simplified.setType(getType());\r
- \r
- return simplified.simplify(context);\r
- }\r
-\r
- @Override\r
- public void collectFreeVariables(THashSet<Variable> vars) {\r
- in.collectFreeVariables(vars);\r
- value.collectFreeVariables(vars);\r
- pattern.removeFreeVariables(vars);\r
- }\r
-\r
- @Override\r
- public Expression resolve(TranslationContext context) {\r
- value = value.resolve(context);\r
- \r
- context.pushFrame();\r
- pattern = pattern.resolveAsPattern(context); \r
- in = in.resolve(context);\r
- context.popFrame();\r
- \r
- bindFunction = context.getBindFunction();\r
- \r
- return this; \r
- }\r
- \r
- @Override\r
- public Expression decorate(ExpressionDecorator decorator) {\r
- pattern = pattern.decorate(decorator);\r
- value = value.decorate(decorator);\r
- in = in.decorate(decorator);\r
- return decorator.decorate(this);\r
- }\r
-\r
- @Override\r
- public void collectEffects(THashSet<Type> effects) {\r
- pattern.collectEffects(effects);\r
- value.collectEffects(effects);\r
- in.collectEffects(effects);\r
- }\r
- \r
- @Override\r
- public void setLocationDeep(long loc) {\r
- if(location == Locations.NO_LOCATION) {\r
- location = loc;\r
- pattern.setLocationDeep(loc);\r
- value.setLocationDeep(loc);\r
- in.setLocationDeep(loc);\r
- }\r
- }\r
- \r
- @Override\r
- public void accept(ExpressionVisitor visitor) {\r
- visitor.visit(this);\r
- }\r
-\r
- @Override\r
- public void forVariables(VariableProcedure procedure) {\r
- pattern.forVariables(procedure);\r
- value.forVariables(procedure);\r
- if(monadEvidence != null)\r
- monadEvidence.forVariables(procedure);\r
- }\r
- \r
- @Override\r
- public Expression accept(ExpressionTransformer transformer) {\r
- return transformer.transform(this);\r
- }\r
-\r
-}\r
+package org.simantics.scl.compiler.elaboration.expressions;
+
+import org.simantics.scl.compiler.common.exceptions.InternalCompilerError;
+import org.simantics.scl.compiler.common.names.Names;
+import org.simantics.scl.compiler.compilation.CompilationContext;
+import org.simantics.scl.compiler.elaboration.contexts.SimplificationContext;
+import org.simantics.scl.compiler.elaboration.contexts.TranslationContext;
+import org.simantics.scl.compiler.elaboration.contexts.TypingContext;
+import org.simantics.scl.compiler.elaboration.expressions.block.BlockType;
+import org.simantics.scl.compiler.elaboration.modules.SCLValue;
+import org.simantics.scl.compiler.errors.Locations;
+import org.simantics.scl.compiler.internal.codegen.references.IVal;
+import org.simantics.scl.compiler.internal.codegen.writer.CodeWriter;
+import org.simantics.scl.compiler.types.Type;
+import org.simantics.scl.compiler.types.Types;
+import org.simantics.scl.compiler.types.exceptions.MatchException;
+import org.simantics.scl.compiler.types.exceptions.UnificationException;
+import org.simantics.scl.compiler.types.kinds.Kinds;
+
+public class EBind extends SimplifiableExpression {
+ BlockType blockType;
+ public Expression pattern;
+ public Expression value;
+ public Expression in;
+ public EVariable monadEvidence;
+ Type monadType;
+ Type effect;
+ Type valueContentType;
+ Type inContentType;
+
+ public EBind(long loc, BlockType blockType, Expression pattern, Expression value, Expression in) {
+ super(loc);
+ this.blockType = blockType;
+ this.pattern = pattern;
+ this.value = value;
+ this.in = in;
+ }
+
+ public EBind(long loc, BlockType blockType, Expression pattern, Expression value, Expression in,
+ SCLValue bindFunction) {
+ super(loc);
+ this.blockType = blockType;
+ this.pattern = pattern;
+ this.value = value;
+ this.in = in;
+ }
+
+ @Override
+ protected void updateType() throws MatchException {
+ setType(in.getType());
+ }
+
+ @Override
+ public Expression checkBasicType(TypingContext context, Type requiredType) {
+ monadType = Types.metaVar(Kinds.STAR_TO_STAR);
+ inContentType = Types.metaVar(Kinds.STAR);
+ Type monadContent = Types.apply(monadType, inContentType);
+ try {
+ Types.unify(requiredType, monadContent);
+ } catch (UnificationException e) {
+ context.typeError(location, requiredType, monadContent);
+ return this;
+ }
+
+ Variable variable = new Variable("monadEvidence");
+ variable.setType(Types.pred(blockType == BlockType.MonadE ? Types.MONAD_E : Types.MONAD, monadType));
+ monadEvidence = new EVariable(getLocation(), variable);
+ monadEvidence.setType(variable.getType());
+ context.addConstraintDemand(monadEvidence);
+
+ pattern = pattern.checkTypeAsPattern(context, Types.metaVar(Kinds.STAR));
+ valueContentType = pattern.getType();
+ value = value.checkType(context, Types.apply(monadType, valueContentType));
+ context.pushEffectUpperBound(location, blockType == BlockType.Monad ? Types.NO_EFFECTS : Types.metaVar(Kinds.EFFECT));
+ in = in.checkType(context, requiredType);
+ effect = context.popEffectUpperBound();
+ Type inType = in.getType();
+ setType(inType);
+ return this;
+ }
+
+ @Override
+ public IVal toVal(CompilationContext context, CodeWriter w) {
+ throw new InternalCompilerError("EBind should be eliminated.");
+ }
+
+ /**
+ * Splits let
+ */
+ @Override
+ public Expression simplify(SimplificationContext context) {
+ long loc = getLocation();
+ monadType = Types.canonical(monadType);
+ valueContentType = Types.canonical(valueContentType);
+ effect = Types.canonical(effect);
+ inContentType = Types.canonical(inContentType);
+ Type[] types = blockType == BlockType.MonadE
+ ? new Type[] {monadType, valueContentType, effect, inContentType}
+ : new Type[] {monadType, valueContentType, inContentType};
+ Expression simplified = new EApply(loc, effect,
+ new EConstant(loc, context.getValue(blockType == BlockType.MonadE ? Names.Prelude_bindE : Names.Prelude_bind), types),
+ monadEvidence,
+ value,
+ new ELambda(loc, effect, new Case[] {
+ new Case(new Expression[] { pattern }, in)
+ }));
+ simplified.setType(getType());
+
+ return simplified.simplify(context);
+ }
+
+ @Override
+ public Expression resolve(TranslationContext context) {
+ value = value.resolve(context);
+
+ context.pushFrame();
+ pattern = pattern.resolveAsPattern(context);
+ in = in.resolve(context);
+ context.popFrame();
+
+ return this;
+ }
+
+ @Override
+ public void setLocationDeep(long loc) {
+ if(location == Locations.NO_LOCATION) {
+ location = loc;
+ pattern.setLocationDeep(loc);
+ value.setLocationDeep(loc);
+ in.setLocationDeep(loc);
+ }
+ }
+
+ @Override
+ public void accept(ExpressionVisitor visitor) {
+ visitor.visit(this);
+ }
+
+ @Override
+ public Expression accept(ExpressionTransformer transformer) {
+ return transformer.transform(this);
+ }
+
+}
Code Review / simantics / platform.git / blobdiff