Implement parsing and resolving of type-variables.

tests/co19/co19-leg.status

Index: tests/co19/co19-leg.status
diff --git a/tests/co19/co19-leg.status b/tests/co19/co19-leg.status
index 81f463eac4229d3bc421ee480573bb96dbc298e3..e3ee3247752e220cc086a4a3f874799fb5dd91b9 100644
--- a/tests/co19/co19-leg.status
+++ b/tests/co19/co19-leg.status
@@ -34,6 +34,7 @@ LibTest/core/ReceivePort/*: Fail, OK
 
 
 [ $component == leg ]
+Language/10_Expressions/01_Constants_A17_t03: Skip # Cycle reference. Times out.
 # Issues with co19 test suite.
 Language/10_Expressions/07_Maps_A01_t01: Fail, OK # Bad test: an expression statement cannot start with a map literal (specification bug).
 Language/10_Expressions/08_Function_Expressions_A01_t05: Fail, OK # Function declaration takes precedence over function expression.
@@ -239,6 +240,8 @@ LibTest/core/RegExp/Pattern_semantics/firstMatch_NonEmptyClassRanges_A01_t06: Fa
 LibTest/core/String/contains_A01_t02: Fail # Expect.fail('IndexOutOfRangeException expected!')
 
 
+Language/13_Types/4_Interface_Types_A10_t04: Fail # visitIdentifier for typedefs not implemented
+Language/09_Generics/09_Generics_A01_t10: Fail
 #
 # The following tests are all semantic tests that we can rely on dartc
 # catching for now.
@@ -419,7 +422,6 @@ Language/08_Interfaces/2_Getters_and_Setters_A07_t03: Fail, OK # @compile-error
 Language/08_Interfaces/2_Getters_and_Setters_A07_t04: Fail, OK # @compile-error
 Language/08_Interfaces/2_Getters_and_Setters_A07_t05: Fail, OK # @compile-error
 Language/08_Interfaces/3_Factories_and_Constructors_A01_t03: Fail, OK # @compile-error
-Language/08_Interfaces/3_Factories_and_Constructors_A01_t04: Fail, OK # @compile-error
 Language/08_Interfaces/3_Factories_and_Constructors_A02_t03: Fail, OK # @compile-error
 Language/08_Interfaces/3_Factories_and_Constructors_A02_t05: Fail, OK # @compile-error
 Language/08_Interfaces/3_Factories_and_Constructors_A02_t07: Fail, OK # @compile-error
@@ -443,16 +445,11 @@ Language/08_Interfaces/3_Factories_and_Constructors_A10_t04: Fail, OK # @compile
 Language/08_Interfaces/3_Factories_and_Constructors_A10_t05: Fail, OK # @compile-error
 Language/08_Interfaces/3_Factories_and_Constructors_A10_t06: Fail, OK # @compile-error
 Language/08_Interfaces/Interfaces_A01_t02: Fail, OK # @compile-error
-Language/08_Interfaces/Interfaces_A01_t03: Fail, OK # @compile-error
 Language/08_Interfaces/Interfaces_A02_t01: Fail, OK # @compile-error
 Language/08_Interfaces/Interfaces_A02_t02: Fail, OK # @compile-error
 Language/08_Interfaces/Interfaces_A02_t03: Fail, OK # @compile-error
 Language/08_Interfaces/Interfaces_A02_t04: Fail, OK # @compile-error
 Language/08_Interfaces/Interfaces_A02_t05: Fail, OK # @compile-error
-Language/09_Generics/09_Generics_A01_t05: Fail, OK # @compile-error
-Language/09_Generics/09_Generics_A01_t08: Fail, OK # @compile-error
-Language/09_Generics/09_Generics_A01_t10: Fail, OK # @compile-error
-Language/09_Generics/09_Generics_A01_t11: Fail, OK # @compile-error
 Language/10_Expressions/01_Constants_A15_t03: Fail, OK # 'const' keyword is not verified in literal maps.
 Language/10_Expressions/01_Constants_A15_t34: Fail, OK # @compile-error
 Language/10_Expressions/02_Null_A04_t01: Fail, OK # @compile-error
@@ -464,7 +461,6 @@ Language/10_Expressions/03_Numbers_A04_t02: Fail, OK # @compile-error
 Language/10_Expressions/03_Numbers_A04_t03: Fail, OK # @compile-error
 Language/10_Expressions/04_Booleans_A03_t01: Fail, OK # @compile-error
 Language/10_Expressions/04_Booleans_A03_t02: Fail, OK # @compile-error
-Language/10_Expressions/05_Strings/1_String_Interpolation_A01_t06: Fail, OK # @compile-error
 Language/10_Expressions/05_Strings/1_String_Interpolation_A01_t12: Fail, OK # @compile-error
 Language/10_Expressions/05_Strings_A02_t20: Fail, OK # @compile-error
 Language/10_Expressions/05_Strings_A02_t24: Fail, OK # @compile-error
@@ -498,39 +494,16 @@ Language/10_Expressions/14_Method_Invocation/2_Static_Invocation_A01_t03: Fail,
 Language/10_Expressions/14_Method_Invocation/3_Super_Invocation_A01_t02: Fail, OK # @compile-error
 Language/10_Expressions/14_Method_Invocation/3_Super_Invocation_A01_t03: Fail, OK # @compile-error
 Language/10_Expressions/14_Method_Invocation/3_Super_Invocation_A05_t05: Fail, OK # @compile-error
-Language/10_Expressions/17_Conditional_A01_t14: Fail, OK # @compile-error
-Language/10_Expressions/17_Conditional_A01_t15: Fail, OK # @compile-error
-Language/10_Expressions/18_Logical_Boolean_Expressions_A01_t14: Fail, OK # @compile-error
-Language/10_Expressions/18_Logical_Boolean_Expressions_A01_t15: Fail, OK # @compile-error
-Language/10_Expressions/19_Bitwise_Expressions_A01_t16: Fail, OK # @compile-error
-Language/10_Expressions/19_Bitwise_Expressions_A01_t17: Fail, OK # @compile-error
 Language/10_Expressions/20_Equality_A01_t15: Fail, OK # @compile-error
 Language/10_Expressions/20_Equality_A01_t16: Fail, OK # @compile-error
 Language/10_Expressions/20_Equality_A01_t17: Fail, OK # @compile-error
 Language/10_Expressions/20_Equality_A01_t18: Fail, OK # @compile-error
-Language/10_Expressions/20_Equality_A01_t23: Fail, OK # @compile-error
-Language/10_Expressions/20_Equality_A01_t24: Fail, OK # @compile-error
 Language/10_Expressions/21_Relational_Expressions_A01_t10: Fail, OK # @compile-error
 Language/10_Expressions/21_Relational_Expressions_A01_t11: Fail, OK # @compile-error
 Language/10_Expressions/21_Relational_Expressions_A01_t12: Fail, OK # @compile-error
 Language/10_Expressions/21_Relational_Expressions_A01_t13: Fail, OK # @compile-error
-Language/10_Expressions/21_Relational_Expressions_A01_t22: Fail, OK # @compile-error
-Language/10_Expressions/21_Relational_Expressions_A01_t23: Fail, OK # @compile-error
-Language/10_Expressions/22_Shift_A01_t13: Fail, OK # @compile-error
-Language/10_Expressions/22_Shift_A01_t14: Fail, OK # @compile-error
-Language/10_Expressions/23_Additive_Expressions_A01_t13: Fail, OK # @compile-error
-Language/10_Expressions/23_Additive_Expressions_A01_t14: Fail, OK # @compile-error
-Language/10_Expressions/24_Multiplicative_Expressions_A01_t16: Fail, OK # @compile-error
-Language/10_Expressions/24_Multiplicative_Expressions_A01_t17: Fail, OK # @compile-error
-Language/10_Expressions/25_Unary_Expressions_A01_t05: Fail, OK # @compile-error
-Language/10_Expressions/25_Unary_Expressions_A01_t20: Fail, OK # @compile-error
-Language/10_Expressions/25_Unary_Expressions_A01_t21: Fail, OK # @compile-error
-Language/10_Expressions/25_Unary_Expressions_A01_t22: Fail, OK # @compile-error
-Language/10_Expressions/26_Postfix_Expressions_A01_t05: Fail, OK # @compile-error
-Language/10_Expressions/27_Assignable_Expressions_A01_t08: Fail, OK # @compile-error
 Language/10_Expressions/28_Identifier_Reference_A01_t07: Fail, OK # @compile-error
 Language/10_Expressions/28_Identifier_Reference_A01_t08: Fail, OK # @compile-error
-Language/10_Expressions/28_Identifier_Reference_A04_t03: Fail, OK # @compile-error
 Language/11_Statements/03_Variable_Declaration_A03_t01: Fail, OK # @compile-error
 Language/11_Statements/03_Variable_Declaration_A03_t02: Fail, OK # @compile-error
 Language/11_Statements/09_Try_A01_t14: Fail, OK # @compile-error
@@ -545,4 +518,3 @@ Language/13_Types/3_Type_Declarations/1_Typedef_A06_t02: Fail, OK # @compile-err
 Language/13_Types/3_Type_Declarations/1_Typedef_A06_t03: Fail, OK # @compile-error
 Language/13_Types/3_Type_Declarations/1_Typedef_A06_t04: Fail, OK # @compile-error
 Language/13_Types/7_Type_Void_A01_t02: Fail, OK # @compile-error
-Language/13_Types/7_Type_Void_A01_t09: Fail, OK # @compile-error