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Features

• add new APIs - SimonSapin, pull/382
  • db.find_enum_by_name() to look up an EnumTypeDefinition.
  • directive.argument_by_name() to look up the value of an argument to a directive call.
  • scalar_type.is_built_in() to check if a ScalarTypeDefinition is defined by the GraphQL spec rather than the schema text.
  • enum_value.directives() to access the directives used on an enum value.
  • hir::Float is now Copy so it can be passed around more easily; use hir_float.get() to access the underlying f64 or hir_float.to_i32_checked() to convert to an i32.

Fixes

• do not panic when creating HIR from a parse tree with syntax errors - goto-bus-stop, pull/381

  When using the compiler, nodes with syntax errors in them are ignored. As syntax errors are returned
  from the parser, you can still tell that something is wrong. The compiler just won't crash the whole
  program anymore.