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node: add a common arityErr{}

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This commit is contained in:
mappu 2020-04-16 18:55:47 +12:00
parent c29a4894ce
commit ac093a05a3
1 changed files with 29 additions and 14 deletions
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43
node.go
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@ -42,6 +42,22 @@ func (pe parseErr) Unwrap() error {
//
type arityErr struct {
funcName string
got int
expected, expectedUpperRange int
}
func (ae arityErr) Error() string {
if ae.expected != ae.expectedUpperRange {
return fmt.Sprintf("Call to '%s' expected %d to %d argument(s), got %d", ae.funcName, ae.expected, ae.expectedUpperRange, ae.got)
} else {
return fmt.Sprintf("Call to '%s' expected %d argument(s), got %d", ae.funcName, ae.expected, ae.got)
}
}
//
type ParseContext int
const (
@ -678,7 +694,7 @@ func (this *conversionState) convertNoFreeFloating(n_ node.Node) (string, error)
// define() gets converted to const
if len(fncall.ArgumentList.Arguments) != 2 {
return "", parseErr{fncall, fmt.Errorf("expected define() to have 2 arguments, found %d", len(fncall.ArgumentList.Arguments))}
return "", parseErr{fncall, arityErr{"define", len(fncall.ArgumentList.Arguments), 2, 2}}
}
defineName := fncall.ArgumentList.Arguments[0].(*node.Argument).Expr // that much is always possible
@ -1115,7 +1131,7 @@ func (this *conversionState) convertNoFreeFloating(n_ node.Node) (string, error)
} else if funcName == `explode` {
if len(callParams) != 2 {
return "", parseErr{n, fmt.Errorf("Call to '%s' expected 2 argument(s), got %d", funcName, len(callParams))}
return "", parseErr{n, arityErr{funcName, len(callParams), 2, 2}}
}
this.importPackages["strings"] = struct{}{}
funcName = `strings.Split`
@ -1123,7 +1139,7 @@ func (this *conversionState) convertNoFreeFloating(n_ node.Node) (string, error)
} else if funcName == `implode` {
if len(callParams) != 2 {
return "", parseErr{n, fmt.Errorf("Call to '%s' expected 2 argument(s), got %d", funcName, len(callParams))}
return "", parseErr{n, arityErr{funcName, len(callParams), 2, 2}}
}
this.importPackages["strings"] = struct{}{}
@ -1136,7 +1152,7 @@ func (this *conversionState) convertNoFreeFloating(n_ node.Node) (string, error)
} else if funcName == `trim` {
if len(callParams) != 1 {
return "", parseErr{n, fmt.Errorf("Call to '%s' expected 2 argument(s), got %d", funcName, len(callParams))}
return "", parseErr{n, arityErr{funcName, len(callParams), 2, 2}}
}
this.importPackages["strings"] = struct{}{}
@ -1144,7 +1160,7 @@ func (this *conversionState) convertNoFreeFloating(n_ node.Node) (string, error)
} else if funcName == `rtrim` {
if len(callParams) != 1 {
return "", parseErr{n, fmt.Errorf("Call to '%s' expected 1 argument(s), got %d", funcName, len(callParams))}
return "", parseErr{n, arityErr{funcName, len(callParams), 1, 1}}
}
this.importPackages["strings"] = struct{}{}
@ -1154,7 +1170,7 @@ func (this *conversionState) convertNoFreeFloating(n_ node.Node) (string, error)
} else if funcName == `ltrim` {
if len(callParams) != 1 {
return "", parseErr{n, fmt.Errorf("Call to '%s' expected 1 argument(s), got %d", funcName, len(callParams))}
return "", parseErr{n, arityErr{funcName, len(callParams), 1, 1}}
}
this.importPackages["strings"] = struct{}{}
@ -1164,7 +1180,7 @@ func (this *conversionState) convertNoFreeFloating(n_ node.Node) (string, error)
} else if funcName == `strtolower` {
if len(callParams) != 1 {
return "", parseErr{n, fmt.Errorf("Call to '%s' expected 2 argument(s), got %d", funcName, len(callParams))}
return "", parseErr{n, arityErr{funcName, len(callParams), 1, 1}}
}
this.importPackages["strings"] = struct{}{}
@ -1172,7 +1188,7 @@ func (this *conversionState) convertNoFreeFloating(n_ node.Node) (string, error)
} else if funcName == `strtoupper` {
if len(callParams) != 1 {
return "", parseErr{n, fmt.Errorf("Call to '%s' expected 2 argument(s), got %d", funcName, len(callParams))}
return "", parseErr{n, arityErr{funcName, len(callParams), 1, 1}}
}
this.importPackages["strings"] = struct{}{}
@ -1180,7 +1196,7 @@ func (this *conversionState) convertNoFreeFloating(n_ node.Node) (string, error)
} else if funcName == `file_put_contents` {
if len(callParams) != 2 {
return "", parseErr{n, fmt.Errorf("Call to '%s' expected 2 argument(s), got %d", funcName, len(callParams))}
return "", parseErr{n, arityErr{funcName, len(callParams), 2, 2}}
}
this.importPackages["io/ioutil"] = struct{}{}
@ -1193,7 +1209,7 @@ func (this *conversionState) convertNoFreeFloating(n_ node.Node) (string, error)
// str_replace( mixed $search , mixed $replace , mixed $subject [, int &$count ] )
// n.b. str_replace also supports arrays, that strings.Replace() doesn't do
if !(len(callParams) == 3 || len(callParams) == 4) {
return "", parseErr{n, fmt.Errorf("Call to '%s' expected 3 or 4 argument(s), got %d", funcName, len(callParams))}
return "", parseErr{n, arityErr{funcName, len(callParams), 3, 4}}
}
this.importPackages["strings"] = struct{}{}
@ -1240,7 +1256,7 @@ func (this *conversionState) convertNoFreeFloating(n_ node.Node) (string, error)
funcName = `fmt.Sprintf`
} else {
return "", parseErr{n, fmt.Errorf("Call to '%s' expected 3 or 4 argument(s), got %d", funcName, len(callParams))}
return "", parseErr{n, arityErr{funcName, len(callParams), 3, 4}}
}
@ -1260,16 +1276,15 @@ func (this *conversionState) convertNoFreeFloating(n_ node.Node) (string, error)
// WARNING: We are doubling up on the first parameter
// This is a problem if it's not necessarily constant
return "(" + callParams[0] + ")[" + callParams[1] + ":" + callParams[1] + `+` + callParams[2] + "]", nil
} else {
return "", parseErr{n, fmt.Errorf("Call to '%s' expected 2 or 3 argument(s), got %d", funcName, len(callParams))}
return "", parseErr{n, arityErr{funcName, len(callParams), 2, 3}}
}
} else if funcName == `rename` {
if len(callParams) != 2 {
return "", parseErr{n, fmt.Errorf("Call to '%s' expected 2 argument(s), got %d", funcName, len(callParams))}
return "", parseErr{n, arityErr{funcName, len(callParams), 2, 2}}
}
this.importPackages["os"] = struct{}{}