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Refactor Field Indexing Symbols

Frederik Hennigrequested to merge
fhennig/refactor-indexing-symbols into v2.0-dev

This MR mainly refactors and clarifies the types and semantics of field shape/stride/pointer symbols.

  • Remove field shape, stride, and pointer symbols from frontend
  • Extend TypedSymbol to accept DynamicTypes
  • Make Field use DynamicType for its indexing symbols so that the indexing type is determined during translation
  • Consolidate index symbol names in DEFAULTS
  • Allow passing arbitrary names for array indexing symbols
  • Fix index type checking in KernelCreationContext.add_field
  • Revert to pystencils 1.x naming convention for field pointers (due to compatibility issues in waLBerla)
Edited by Frederik Hennig

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