only imports decimal package if not using floats, and there are decimal fields

Author: Chris Busbey

cmd/generate-fix/internal/template_helpers.go

@@ -6,6 +6,22 @@ import (
 	"github.com/quickfixgo/quickfix/datadictionary"
 )
 
+func checkIfDecimalImportRequiredForFields(fTypes []*datadictionary.FieldType) (ok bool, err error) {
+	var t string
+	for _, fType := range fTypes {
+		t, err = quickfixType(fType)
+		if err != nil {
+			return
+		}
+
+		if t == "FIXDecimal" {
+			return true, nil
+		}
+	}
+
+	return
+}
+
 func checkFieldDecimalRequired(f *datadictionary.FieldDef) (required bool, err error) {
 	var globalType *datadictionary.FieldType
 	if globalType, err = getGlobalFieldType(f); err != nil {
@@ -92,8 +108,6 @@ func collectExtraImports(m *datadictionary.MessageDef) (imports []string, err er
 	return
 }
 
-func useFloatType() bool { return *useFloat }
-
 func quickfixValueType(quickfixType string) (goType string, err error) {
 	switch quickfixType {
 	case "FIXString":

cmd/generate-fix/internal/templates.go

@@ -16,16 +16,16 @@ var (
 
 func init() {
 	tmplFuncs := template.FuncMap{
-		"toLower":             strings.ToLower,
-		"requiredFields":      requiredFields,
-		"beginString":         beginString,
-		"routerBeginString":   routerBeginString,
-		"importRootPath":      getImportPathRoot,
-		"quickfixType":        quickfixType,
-		"quickfixValueType":   quickfixValueType,
-		"getGlobalFieldType":  getGlobalFieldType,
-		"collectExtraImports": collectExtraImports,
-		"useFloatType":        useFloatType,
+		"toLower":                               strings.ToLower,
+		"requiredFields":                        requiredFields,
+		"beginString":                           beginString,
+		"routerBeginString":                     routerBeginString,
+		"importRootPath":                        getImportPathRoot,
+		"quickfixType":                          quickfixType,
+		"quickfixValueType":                     quickfixValueType,
+		"getGlobalFieldType":                    getGlobalFieldType,
+		"collectExtraImports":                   collectExtraImports,
+		"checkIfDecimalImportRequiredForFields": checkIfDecimalImportRequiredForFields,
 	}
 
 	baseTemplate := template.Must(template.New("Base").Funcs(tmplFuncs).Parse(`
@@ -284,7 +284,7 @@ package field
 import(
 	"github.com/quickfixgo/quickfix"
 	"{{ importRootPath }}/tag"
-{{ if eq useFloatType false}} "github.com/shopspring/decimal" {{ end }}
+{{ if checkIfDecimalImportRequiredForFields . }} "github.com/shopspring/decimal" {{ end }}
 	"time"
 )