5.4.3.2 Local Constant Declarations

Note

This section describes the implementation of MS-VBAL §5.4.3.2 Local Constant Declarations.

Syntax

Declaration	AST node	Symbol on the procedure's Locals
Const (in a procedure body)	ConstantDeclarationNode	VBLocalConstantSymbol

VBProcedureMemberSymbol.Locals and VBReturningMemberSymbol.Locals list every Dim, Static and Const declared in the procedure body; see RD-VBAL §5.4.3.1 Local Variable Declarations.

Runtime Semantics

In MS-VBAL, a local Const's value is substituted at compile time; it has no run-time address.

RD-VBA does the same: a constant's expression is reduced once, when its module is loaded, and a read of the constant is that value. The expression is evaluated in the scope where the constant is written, and may name another constant.

Implementation

RDCore.Runtime.Execution.RuntimeProcedureInvoker.HoistLocals hoists a procedure's Dim and Static locals only; a local Const gets no storage. RDCore.Runtime.Execution.ModuleLoader hands the constants of the module, the local ones included, to RuntimeExpressionEvaluator.FoldConstants.

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⏮️ RD-VBAL §5.4.3.1 Local Variable Declarations | ⏭️ RD-VBAL §5.4.3.3 ReDim Statement