feat:Added the parameter parsing mode to parse any to the specified type #148
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WalkthroughThis pull request introduces a new dependency and several new functions. A dependency on the Changes
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Actionable comments posted: 1
🧹 Nitpick comments (2)
mcp/tools_test.go (1)
249-263: Consider adding edge case tests.While the current tests cover the basic functionality, consider adding tests for edge cases such as:
- Missing keys (default value behavior)
- Invalid format values (e.g., "not-a-number" for numeric types)
- Values that would overflow smaller integer types
This would make the tests more robust and ensure the behavior is consistent across all edge cases.
request.Params.Arguments = map[string]interface{}{ "bool_value": "true", "int64_value": "123456789", "int32_value": "123456789", "int16_value": "123456789", "int8_value": "123456789", "int_value": "123456789", "uint_value": "123456789", "uint64_value": "123456789", "uint32_value": "123456789", "uint16_value": "123456789", "uint8_value": "123456789", "float32_value": "3.14", "float64_value": "3.1415926", "string_value": "hello", + // Add edge cases + "invalid_number": "not-a-number", + "overflow_int8": "999", }mcp/utils.go (1)
599-605: Consider simplifying the conditional logic.The current implementation uses an if-else structure, but this could be simplified to make the code more concise.
func ParseArgument(request CallToolRequest, key string, defaultVal any) any { - if _, ok := request.Params.Arguments[key]; !ok { - return defaultVal - } else { - return request.Params.Arguments[key] - } + if val, ok := request.Params.Arguments[key]; ok { + return val + } + return defaultVal }
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⛔ Files ignored due to path filters (1)
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📒 Files selected for processing (3)
go.mod(1 hunks)mcp/tools_test.go(2 hunks)mcp/utils.go(2 hunks)
🧰 Additional context used
🧬 Code Graph Analysis (2)
mcp/tools_test.go (3)
mcp/tools.go (1)
CallToolRequest(44-59)mcp/types.go (1)
Params(104-104)mcp/utils.go (14)
ParseBoolean(607-610)ParseInt64(612-615)ParseInt32(617-620)ParseInt16(622-625)ParseInt8(627-630)ParseInt(632-635)ParseUInt(637-640)ParseUInt64(642-645)ParseUInt32(647-650)ParseUInt16(652-655)ParseUInt8(657-660)ParseFloat32(662-665)ParseFloat64(667-670)ParseString(672-675)
mcp/utils.go (2)
mcp/tools.go (1)
CallToolRequest(44-59)mcp/types.go (1)
Params(104-104)
🔇 Additional comments (5)
go.mod (1)
7-7:✅ Verification successful
New dependency added correctly.
The PR adds
github.com/spf13/cast v1.7.1as a new dependency, which is appropriate for the type conversion functionality being implemented. This dependency is commonly used for converting between various data types in Go.
🏁 Script executed:
#!/bin/bash # Verify the cast package version is the latest stable version curl -s https://api.github.com/repos/spf13/cast/releases/latest | jq -r '.tag_name'Length of output: 90
Verified: Dependency version confirmed as latest.
The added dependencygithub.com/spf13/cast v1.7.1is correct, as confirmed by the latest GitHub release output. No further modifications are needed.mcp/tools_test.go (1)
245-310: Comprehensive test implementation for new parsing functions.The test correctly validates the type conversion functionality of all newly added parsing functions by:
- Setting up a test
CallToolRequestwith string representations of various data types- Calling each parsing function and verifying the returned value has the expected type
- Including an edge case test with
param15that demonstrates type conversion from string to int64This is a good example of ensuring the new functionality works as expected before implementation.
mcp/utils.go (3)
599-605: Well-designed argument extraction function with default values.The
ParseArgumentfunction elegantly handles the case where a key doesn't exist in the Arguments map by returning a provided default value. This is a clean implementation that avoids the need for repetitive nil/existence checks in calling code.
607-675: Comprehensive type conversion utilities implemented efficiently.The implementation provides a complete set of parsing functions for all common Go types (boolean, various integer sizes, floats, and strings). Each function follows the same clear pattern of:
- Extracting the argument using the generic
ParseArgumentfunction- Converting it to the target type using the appropriate
castpackage functionThis approach is DRY and consistent, which makes the code easy to understand and maintain.
677-680: Added map parsing functionality for more complex use cases.The
ParseStringMapfunction extends the parsing utilities to handle more complex data structures, providing the same consistent interface as the primitive type parsers. This is a good addition for working with nested JSON structures.
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Actionable comments posted: 1
♻️ Duplicate comments (1)
mcp/utils.go (1)
623-675: Complete the documentation for remaining parsing functions.While the first two parsing functions have proper GoDoc comments, the remaining functions lack similarly detailed documentation. For consistency and maintainability, all exported functions should have proper documentation.
Add documentation to each function following the pattern established for
ParseBooleanandParseInt64. For example:+// ParseInt32 extracts and converts an int32 parameter from a CallToolRequest. +// If the key is not found in the Arguments map, the defaultValue is returned. +// The function uses cast.ToInt32 for conversion. func ParseInt32(request CallToolRequest, key string, defaultValue int32) int32 { v := ParseArgument(request, key, defaultValue) return cast.ToInt32(v) }
🧹 Nitpick comments (2)
mcp/utils.go (2)
599-605: Add documentation to theParseArgumentfunction.This utility function lacks documentation comments explaining its purpose, parameters, and return values. Since it's the foundational function for all other parsing functions, clear documentation would be beneficial.
+// ParseArgument extracts a value from the Arguments map of a CallToolRequest. +// If the key is not found, it returns the provided default value. +// This is a helper function used by the type-specific parsing functions. func ParseArgument(request CallToolRequest, key string, defaultVal any) any {
677-699: Consider adding error handling to these parsing functions.Currently, these functions rely on the
castpackage's internal error handling, which means conversion errors are silently handled and default values are returned. Consider whether providing error information back to the caller would be beneficial for debugging complex type conversion issues.An alternative implementation could be:
// ParseFloat64 extracts and converts a float64 parameter from a CallToolRequest. -func ParseFloat64(request CallToolRequest, key string, defaultValue float64) float64 { +// It returns the converted value and any error that occurred during conversion. +func ParseFloat64(request CallToolRequest, key string, defaultValue float64) (float64, error) { v := ParseArgument(request, key, defaultValue) - return cast.ToFloat64(v) + return cast.ToFloat64E(v) }This would allow callers to handle conversion errors explicitly if needed. However, this would be a breaking change to the API, so carefully consider whether the trade-off is worth it for your use case.
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📒 Files selected for processing (1)
mcp/utils.go(2 hunks)
🧰 Additional context used
🧬 Code Graph Analysis (1)
mcp/utils.go (2)
mcp/tools.go (1)
CallToolRequest(44-59)mcp/types.go (1)
Params(104-104)
🔇 Additional comments (3)
mcp/utils.go (3)
6-6: Approved dependency addition.The
github.com/spf13/castpackage is an appropriate choice for type conversion functionality required by the new parsing functions.
607-621: LGTM: Well-documented parsing functions.Good job adding detailed GoDoc comments to these functions. They clearly explain the purpose, parameters, and behavior of each function.
599-699: Great implementation of utility functions for parameter parsing.These parsing functions create a clean abstraction for extracting and converting parameters from
CallToolRequestobjects. The use of thecastpackage provides flexible type conversion and the consistent API makes these functions easy to use.
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