initial commit [141.14.140.180,mike]

types.go

@@ -0,0 +1,40 @@
+package main
+
+import "github.com/shopspring/decimal"
+
+// Dimension represents the physical dimension of a unit.
+type Dimension int
+
+const (
+	DimNone Dimension = iota
+	DimCurrency
+	DimLength
+	DimMass
+	DimTime
+	DimDigital
+	DimArea
+	DimTemp
+	DimAngle
+	DimIP
+	DimCIDR
+	DimString
+)
+
+// Result holds the evaluated numeric value and its dimension.
+type Result struct {
+	Value decimal.Decimal
+	Dim   Dimension
+}
+
+// UnitInfo stores the conversion factor (to the pivot unit) and its dimension.
+type UnitInfo struct {
+	Factor    decimal.Decimal
+	Dimension Dimension
+	Label     string
+}
+
+// UserFunc represents a user-defined function.
+type UserFunc struct {
+	Args []string `json:"args"`
+	Expr string   `json:"expr"`
+}