Add Vector type to Kernel

pkg/kernel/lib/ast.dart

Index: pkg/kernel/lib/ast.dart
diff --git a/pkg/kernel/lib/ast.dart b/pkg/kernel/lib/ast.dart
index 9d6d5cdd073424bf9d2999e6e6673af3d96dd8bc..121e179cb82c2dfc3de5b584bd489a88783c361d 100644
--- a/pkg/kernel/lib/ast.dart
+++ b/pkg/kernel/lib/ast.dart
@@ -2750,6 +2750,116 @@ class CheckLibraryIsLoaded extends Expression {
   transformChildren(Transformer v) {}
 }
 
+/// Expression of the form `MakeVector(N)` where `N` is an integer literal.
+class VectorCreation extends Expression {
+  final IntLiteral length;

[asgerf, 2017/03/22 14:33:22]

The kernel AST is mutable, only List fields should be final.

[Dmitry Stefantsov, 2017/03/23 11:22:43]

Thanks! Done.

+
+  VectorCreation(this.length) {
+    length?.parent = this;
+  }
+
+  accept(ExpressionVisitor v) => v.visitVectorCreation(this);
+  accept1(ExpressionVisitor1 v, arg) => v.visitVectorCreation(this, arg);
+
+  visitChildren(Visitor v) {
+    length.accept(v);
+  }
+
+  transformChildren(Transformer v) {
+    length.accept(v);

[asgerf, 2017/03/22 14:33:22]

transformChildren should replace the children, not just visit them.

[Dmitry Stefantsov, 2017/03/23 11:22:43]

Of course. Thanks! Fixed.

+  }
+
+  DartType getStaticType(TypeEnvironment types) {
+    return new VectorType();
+  }
+}
+
+/// Expression of the form `v[i]` where `v` is a vector expression, and `i` is
+/// an integer literal used as an index.
+class VectorGet extends Expression {
+  final Expression vectorExpression;
+  final IntLiteral index;
+
+  VectorGet(this.vectorExpression, this.index) {
+    vectorExpression?.parent = this;
+    index?.parent = this;
+  }
+
+  accept(ExpressionVisitor v) => v.visitVectorGet(this);
+  accept1(ExpressionVisitor1 v, arg) => v.visitVectorGet(this, arg);
+
+  visitChildren(Visitor v) {
+    vectorExpression.accept(v);
+    index.accept(v);
+  }
+
+  transformChildren(Transformer v) {
+    vectorExpression.accept(v);
+    index.accept(v);
+  }
+
+  DartType getStaticType(TypeEnvironment types) {
+    return const DynamicType();
+  }
+}
+
+/// Expressoins of the form `v[i] = x` where `v` is a vector expression, `i` is
+/// an integer literal used as an index, and `x` is an arbitrary expression.
+class VectorSet extends Expression {
+  final Expression vectorExpression;
+  final IntLiteral index;
+  Expression value;
+
+  VectorSet(this.vectorExpression, this.index, this.value) {
+    vectorExpression?.parent = this;
+    index?.parent = this;
+    value?.parent = this;
+  }
+
+  accept(ExpressionVisitor v) => v.visitVectorSet(this);
+  accept1(ExpressionVisitor1 v, arg) => v.visitVectorSet(this, arg);
+
+  visitChildren(Visitor v) {
+    vectorExpression.accept(v);
+    index.accept(v);
+    value.accept(v);
+  }
+
+  transformChildren(Transformer v) {
+    vectorExpression.accept(v);
+    index.accept(v);
+    value.accept(v);
+  }
+
+  DartType getStaticType(TypeEnvironment types) {
+    return value.getStaticType(types);
+  }
+}
+
+/// Expression of the form `CopyVector(v)` where `v` is a vector expressoin.
+class VectorCopy extends Expression {
+  final Expression vectorExpression;
+
+  VectorCopy(this.vectorExpression) {
+    vectorExpression?.parent = this;
+  }
+
+  accept(ExpressionVisitor v) => v.visitVectorCopy(this);
+  accept1(ExpressionVisitor1 v, arg) => v.visitVectorCopy(this, arg);
+
+  visitChildren(Visitor v) {
+    vectorExpression.accept(v);
+  }
+
+  transformChildren(Transformer v) {
+    vectorExpression.accept(v);
+  }
+
+  DartType getStaticType(TypeEnvironment types) {
+    return new VectorType();
+  }
+}
+
 // ------------------------------------------------------------------------
 //                              STATEMENTS
 // ------------------------------------------------------------------------
@@ -3652,6 +3762,13 @@ class InterfaceType extends DartType {
   }
 }
 
+class VectorType extends DartType {
+  const VectorType();
+
+  accept(DartTypeVisitor v) => v.visitVectorType(this);
+  visitChildren(Visitor v) {}
+}
+
 /// A possibly generic function type.
 class FunctionType extends DartType {
   final List<TypeParameter> typeParameters;