Reorganize code into individual tool files

tool_find_deprecated.go

@@ -0,0 +1,51 @@
+package main
+
+import (
+	"go/ast"
+	"go/token"
+	"strings"
+)
+
+// Deprecated usage types
+type DeprecatedInfo struct {
+	File  string              `json:"file"`
+	Usage []DeprecatedUsage   `json:"usage"`
+}
+
+type DeprecatedUsage struct {
+	Item        string   `json:"item"`
+	Alternative string   `json:"alternative,omitempty"`
+	Reason      string   `json:"reason,omitempty"`
+	Position    Position `json:"position"`
+}
+
+func findDeprecated(dir string) ([]DeprecatedInfo, error) {
+	var deprecated []DeprecatedInfo
+
+	err := walkGoFiles(dir, func(path string, src []byte, file *ast.File, fset *token.FileSet) error {
+		info := DeprecatedInfo{
+			File: path,
+		}
+
+		// Look for deprecated comments
+		for _, cg := range file.Comments {
+			for _, c := range cg.List {
+				if strings.Contains(strings.ToLower(c.Text), "deprecated") {
+					pos := fset.Position(c.Pos())
+					info.Usage = append(info.Usage, DeprecatedUsage{
+						Item:     "deprecated_comment",
+						Reason:   c.Text,
+						Position: newPosition(pos),
+					})
+				}
+			}
+		}
+
+		if len(info.Usage) > 0 {
+			deprecated = append(deprecated, info)
+		}
+		return nil
+	})
+
+	return deprecated, err
+}