Add support for case function (#4147)

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
This commit is contained in:
Allan Guigou
2025-12-17 10:57:05 -05:00
committed by GitHub
parent c96dcd4729
commit 651077689d
18 changed files with 159 additions and 17 deletions

View File

@@ -17,9 +17,10 @@ namespace GitHub.Actions.Expressions
String expression,
ITraceWriter trace,
IEnumerable<INamedValueInfo> namedValues,
IEnumerable<IFunctionInfo> functions)
IEnumerable<IFunctionInfo> functions,
Boolean allowCaseFunction = true)
{
var context = new ParseContext(expression, trace, namedValues, functions);
var context = new ParseContext(expression, trace, namedValues, functions, allowCaseFunction: allowCaseFunction);
context.Trace.Info($"Parsing expression: <{expression}>");
return CreateTree(context);
}
@@ -349,6 +350,10 @@ namespace GitHub.Actions.Expressions
{
throw new ParseException(ParseExceptionKind.TooManyParameters, token: @operator, expression: context.Expression);
}
else if (functionInfo.Name.Equals("case", StringComparison.OrdinalIgnoreCase) && function.Parameters.Count % 2 == 0)
{
throw new ParseException(ParseExceptionKind.EvenParameters, token: @operator, expression: context.Expression);
}
}
/// <summary>
@@ -411,6 +416,12 @@ namespace GitHub.Actions.Expressions
String name,
out IFunctionInfo functionInfo)
{
if (String.Equals(name, "case", StringComparison.OrdinalIgnoreCase) && !context.AllowCaseFunction)
{
functionInfo = null;
return false;
}
return ExpressionConstants.WellKnownFunctions.TryGetValue(name, out functionInfo) ||
context.ExtensionFunctions.TryGetValue(name, out functionInfo);
}
@@ -418,6 +429,7 @@ namespace GitHub.Actions.Expressions
private sealed class ParseContext
{
public Boolean AllowUnknownKeywords;
public Boolean AllowCaseFunction;
public readonly String Expression;
public readonly Dictionary<String, IFunctionInfo> ExtensionFunctions = new Dictionary<String, IFunctionInfo>(StringComparer.OrdinalIgnoreCase);
public readonly Dictionary<String, INamedValueInfo> ExtensionNamedValues = new Dictionary<String, INamedValueInfo>(StringComparer.OrdinalIgnoreCase);
@@ -433,7 +445,8 @@ namespace GitHub.Actions.Expressions
ITraceWriter trace,
IEnumerable<INamedValueInfo> namedValues,
IEnumerable<IFunctionInfo> functions,
Boolean allowUnknownKeywords = false)
Boolean allowUnknownKeywords = false,
Boolean allowCaseFunction = true)
{
Expression = expression ?? String.Empty;
if (Expression.Length > ExpressionConstants.MaxLength)
@@ -454,6 +467,7 @@ namespace GitHub.Actions.Expressions
LexicalAnalyzer = new LexicalAnalyzer(Expression);
AllowUnknownKeywords = allowUnknownKeywords;
AllowCaseFunction = allowCaseFunction;
}
private class NoOperationTraceWriter : ITraceWriter
@@ -468,4 +482,4 @@ namespace GitHub.Actions.Expressions
}
}
}
}
}