private Tuple <Type, Expr> Match(string groupName, FluentPart part)
{
var group = _matches[groupName];
var ctx = _parser.Context;
var helper = new FluentPluginHelper(ctx);
Expr expr = null;
Type type = null;
// 1. Go through all the matches in group. e.g. "class"
// Note: This is at most 4 possible groups ( class, instance, property, method )
for (int ndx = 0; ndx < group.Count; ndx++)
{
var match = group[ndx];
Token klass = null, instance = null, method = null, prop = null;
var token = _tokenIt.NextToken.Token;
// 2. Go through all the matches in each group
// Note: There are at most 4 matches.
int lastTokenPeek = 0;
for (int ndxT = 0; ndxT < match.Count; ndxT++)
{
part = match[ndxT];
if (part == FluentPart.Class)
{
klass = token;
}
else if (part == FluentPart.Instance)
{
instance = token;
}
else if (part == FluentPart.Method)
{
method = token;
}
else if (part == FluentPart.Prop)
{
prop = token;
}
lastTokenPeek = ndxT;
token = _tokenIt.Peek(lastTokenPeek + 1, false).Token;
}
// Check if match.
type = helper.GetType(klass, instance);
if (type != null)
{
var result = IsMatch(helper, type, klass, instance, prop, method);
// Success
if (result.Item1)
{
expr = result.Item2;
_tokenIt.Advance(lastTokenPeek + 1);
break;
}
}
}
return(new Tuple <Type, Expr>(type, expr));
}
private Tuple <bool, Expr> IsMatch(FluentPluginHelper helper, Type type, Token klass, Token instance, Token prop, Token method)
{
var memberName = string.Empty;
var rootVar = string.Empty;
var match = false;
var nameToken = klass;
// 1. Class property
if (klass != null && prop != null)
{
rootVar = klass.Text;
if (helper.IsClassProp(type, prop.Text))
{
memberName = prop.Text;
match = true;
}
}
// 2. Class method
else if (klass != null && method != null)
{
rootVar = type.Name;
if (helper.IsClassMethod(type, method.Text))
{
memberName = method.Text;
match = true;
}
}
// 3. Instance property
else if (instance != null && prop != null)
{
rootVar = instance.Text;
if (helper.IsInstanceProp(type, prop.Text))
{
memberName = prop.Text;
match = true;
nameToken = instance;
}
}
// 4. Instance method
else if (instance != null && method != null)
{
rootVar = instance.Text;
if (helper.IsInstanceMethod(type, method.Text))
{
memberName = method.Text;
match = true;
nameToken = instance;
}
}
if (!match)
{
return(new Tuple <bool, Expr>(false, null));
}
var varExp = Exprs.Ident(rootVar, null);
var memExp = Exprs.MemberAccess(varExp, memberName, false, null);
return(new Tuple <bool, Expr>(memberName != null, memExp));
}
private Tuple <bool, Expr> IsMatch(FluentPluginHelper helper, Type type, Token klass, Token instance, Token prop, Token method)
{
string memberName = null;
string rootVar = null;
bool match = false;
// 1. Class property
if (klass != null && prop != null)
{
rootVar = klass.Text;
if (helper.IsClassProp(type, prop.Text))
{
memberName = prop.Text;
match = true;
}
}
// 2. Class method
else if (klass != null && method != null)
{
rootVar = type.Name;
if (helper.IsClassMethod(type, method.Text))
{
memberName = method.Text;
match = true;
}
}
// 3. Instance property
else if (instance != null && prop != null)
{
rootVar = instance.Text;
if (helper.IsInstanceProp(type, prop.Text))
{
memberName = prop.Text;
match = true;
}
}
// 4. Instance method
else if (instance != null && method != null)
{
rootVar = instance.Text;
if (helper.IsInstanceMethod(type, method.Text))
{
memberName = method.Text;
match = true;
}
}
if (!match)
{
return(new Tuple <bool, Expr>(false, null));
}
var varExp = new VariableExpr(rootVar);
varExp.Ctx = _parser.Context;
var memExp = new MemberAccessExpr(varExp, memberName, false);
memExp.Ctx = _parser.Context;
return(new Tuple <bool, Expr>(memberName != null, memExp));
}
/* ****************************************************************************************
* The following syntax can be supported via this Fluent expression combinator
*
* 1. activate user.
* 2. move file "c:\temp.txt".
* 3. file "c:\temp.txt" exists.
* 3. run program "msbuild.exe", solution: 'comlib.sln', mode: "debug", style: "rebuild all".
*
* 1. <method> <class> .
* 2. <method> <class> <arg1> <arg2> .
* 3. <class> <arg1> <method> .
* 3. <method> <class> <arg1>, <arg1_name> : <arg1_value>, <arg2_name> : <arg2_value> .
*
***************************************************************************************** */
/// <summary>
/// Parses the fluent expression.
/// </summary>
/// <returns></returns>
public override Expr Parse()
{
var ctx = _parser.Context;
var helper = new FluentPluginHelper(ctx);
var token = _tokenIt.NextToken;
Expr mexp = null;
Tuple <Type, Expr> matchResult = null;
// 1. Check if instance variable.
if (helper.IsInstance(token.Token))
{
matchResult = Match("instance", FluentPart.Instance);
mexp = matchResult.Item2;
}
// 2. Check if class
else if (helper.IsClass(token.Token))
{
matchResult = Match("class", FluentPart.Class);
mexp = matchResult.Item2;
}
// 3. Has to be method or prop
else
{
matchResult = Match("method", FluentPart.Method);
mexp = matchResult.Item2;
if (mexp == null)
{
matchResult = Match("prop", FluentPart.Prop);
mexp = matchResult.Item2;
}
}
if (mexp != null)
{
// TODO: Performance improvement.
var memExp = mexp as MemberAccessExpr;
if (helper.IsClassMethod(matchResult.Item1, memExp.MemberName) || helper.IsInstanceMethod(matchResult.Item1, memExp.MemberName))
{
mexp = ParseParams(mexp);
}
}
return(mexp);
}
private Tuple<Type, Expr> Match(string groupName, FluentPart part)
{
var group = _matches[groupName];
var ctx = _parser.Context;
var helper = new FluentPluginHelper(ctx);
Expr expr = null;
Type type = null;
// 1. Go through all the matches in group. e.g. "class"
// Note: This is at most 4 possible groups ( class, instance, property, method )
for (int ndx = 0; ndx < group.Count; ndx++)
{
var match = group[ndx];
Token klass = null, instance = null, method = null, prop = null;
var token = _tokenIt.NextToken.Token;
// 2. Go through all the matches in each group
// Note: There are at most 4 matches.
int lastTokenPeek = 0;
for (int ndxT = 0; ndxT < match.Count; ndxT++)
{
part = match[ndxT];
if (part == FluentPart.Class) klass = token;
else if (part == FluentPart.Instance) instance = token;
else if (part == FluentPart.Method) method = token;
else if (part == FluentPart.Prop) prop = token;
lastTokenPeek = ndxT;
token = _tokenIt.Peek(lastTokenPeek + 1, false).Token;
}
// Check if match.
type = helper.GetType(klass, instance);
if (type != null)
{
var result = IsMatch(helper, type, klass, instance, prop, method);
// Success
if (result.Item1)
{
expr = result.Item2;
_tokenIt.Advance(lastTokenPeek + 1);
break;
}
}
}
return new Tuple<Type, Expr>(type, expr);
}
private Tuple<bool, Expr> IsMatch(FluentPluginHelper helper, Type type, Token klass, Token instance, Token prop, Token method)
{
var memberName = string.Empty;
var rootVar = string.Empty;
var match = false;
var nameToken = klass;
// 1. Class property
if (klass != null && prop != null)
{
rootVar = klass.Text;
if (helper.IsClassProp(type, prop.Text))
{
memberName = prop.Text;
match = true;
}
}
// 2. Class method
else if (klass != null && method != null)
{
rootVar = type.Name;
if (helper.IsClassMethod(type, method.Text))
{
memberName = method.Text;
match = true;
}
}
// 3. Instance property
else if (instance != null && prop != null)
{
rootVar = instance.Text;
if (helper.IsInstanceProp(type, prop.Text))
{
memberName = prop.Text;
match = true;
nameToken = instance;
}
}
// 4. Instance method
else if (instance != null && method != null)
{
rootVar = instance.Text;
if (helper.IsInstanceMethod(type, method.Text))
{
memberName = method.Text;
match = true;
nameToken = instance;
}
}
if (!match)
return new Tuple<bool, Expr>(false, null);
var varExp = _parser.ToIdentExpr(rootVar, null);
var memExp = _parser.ToMemberAccessExpr(varExp, memberName, false, null);
return new Tuple<bool, Expr>(memberName != null, memExp);
}
/* ****************************************************************************************
* The following syntax can be supported via this Fluent expression combinator
*
* 1. activate user.
* 2. move file "c:\temp.txt".
* 3. file "c:\temp.txt" exists.
* 3. run program "msbuild.exe", solution: 'comlib.sln', mode: "debug", style: "rebuild all".
*
* 1. <method> <class> .
* 2. <method> <class> <arg1> <arg2> .
* 3. <class> <arg1> <method> .
* 3. <method> <class> <arg1>, <arg1_name> : <arg1_value>, <arg2_name> : <arg2_value> .
*
***************************************************************************************** */
/// <summary>
/// Parses the fluent expression.
/// </summary>
/// <returns></returns>
public override Expr Parse()
{
var ctx = _parser.Context;
var helper = new FluentPluginHelper(ctx);
var token = _tokenIt.NextToken;
Expr mexp = null;
Tuple<Type, Expr> matchResult = null;
// 1. Check if instance variable.
if (helper.IsInstance(token.Token))
{
matchResult = Match("instance", FluentPart.Instance);
mexp = matchResult.Item2;
}
// 2. Check if class
else if (helper.IsClass(token.Token))
{
matchResult = Match("class", FluentPart.Class);
mexp = matchResult.Item2;
}
// 3. Has to be method or prop
else
{
matchResult = Match("method", FluentPart.Method);
mexp = matchResult.Item2;
if(mexp == null)
{
matchResult = Match("prop", FluentPart.Prop);
mexp = matchResult.Item2;
}
}
if (mexp != null )
{
// TODO: Performance improvement.
var memExp = mexp as MemberAccessExpr;
if (helper.IsClassMethod(matchResult.Item1, memExp.MemberName) || helper.IsInstanceMethod(matchResult.Item1, memExp.MemberName))
{
mexp = ParseParams(mexp);
}
}
return mexp;
}