github.com/shogo82148/goa-v1@v1.6.2/design/apidsl/current.go (about)

     1  package apidsl
     2  
     3  import (
     4  	"github.com/shogo82148/goa-v1/design"
     5  	"github.com/shogo82148/goa-v1/dslengine"
     6  )
     7  
     8  // NOTE: the following functions are in this file so that IncompatibleDSL can compute the stack
     9  // depth correctly when looking up the name of the caller DSL function. IncompatibleDSL in used in
    10  // two scenarios: in a type switch statement or via one of the functions below. In the case of a
    11  // switch statement the name of the DSL function is 2 levels up the call to IncompatibleDSL while in
    12  // the case of the functions below it's 3 levels up. Using a different file allows IncompatibleDSL
    13  // to correctly compute the stack depth. A little bit dirty but seems to be the lesser evil.
    14  
    15  // apiDefinition returns true and current context if it is an APIDefinition,
    16  // nil and false otherwise.
    17  func apiDefinition() (*design.APIDefinition, bool) {
    18  	a, ok := dslengine.CurrentDefinition().(*design.APIDefinition)
    19  	if !ok {
    20  		dslengine.IncompatibleDSL()
    21  	}
    22  	return a, ok
    23  }
    24  
    25  // encodingDefinition returns true and current context if it is an EncodingDefinition,
    26  // nil and false otherwise.
    27  func encodingDefinition() (*design.EncodingDefinition, bool) {
    28  	e, ok := dslengine.CurrentDefinition().(*design.EncodingDefinition)
    29  	if !ok {
    30  		dslengine.IncompatibleDSL()
    31  	}
    32  	return e, ok
    33  }
    34  
    35  // contactDefinition returns true and current context if it is an ContactDefinition,
    36  // nil and false otherwise.
    37  func contactDefinition() (*design.ContactDefinition, bool) {
    38  	a, ok := dslengine.CurrentDefinition().(*design.ContactDefinition)
    39  	if !ok {
    40  		dslengine.IncompatibleDSL()
    41  	}
    42  	return a, ok
    43  }
    44  
    45  // mediaTypeDefinition returns true and current context if it is a MediaTypeDefinition,
    46  // nil and false otherwise.
    47  func mediaTypeDefinition() (*design.MediaTypeDefinition, bool) {
    48  	m, ok := dslengine.CurrentDefinition().(*design.MediaTypeDefinition)
    49  	if !ok {
    50  		dslengine.IncompatibleDSL()
    51  	}
    52  	return m, ok
    53  }
    54  
    55  // attributeDefinition returns true and current context if it is an Attribute,
    56  // nil and false otherwise.
    57  func attributeDefinition() (*design.AttributeDefinition, bool) {
    58  	a, ok := dslengine.CurrentDefinition().(*design.AttributeDefinition)
    59  	if !ok {
    60  		dslengine.IncompatibleDSL()
    61  	}
    62  	return a, ok
    63  }
    64  
    65  // resourceDefinition returns true and current context if it is a ResourceDefinition,
    66  // nil and false otherwise.
    67  func resourceDefinition() (*design.ResourceDefinition, bool) {
    68  	r, ok := dslengine.CurrentDefinition().(*design.ResourceDefinition)
    69  	if !ok {
    70  		dslengine.IncompatibleDSL()
    71  	}
    72  	return r, ok
    73  }
    74  
    75  // corsDefinition returns true and current context if it is a CORSDefinition, nil And
    76  // false otherwise.
    77  func corsDefinition() (*design.CORSDefinition, bool) {
    78  	cors, ok := dslengine.CurrentDefinition().(*design.CORSDefinition)
    79  	if !ok {
    80  		dslengine.IncompatibleDSL()
    81  	}
    82  	return cors, ok
    83  }
    84  
    85  // actionDefinition returns true and current context if it is an ActionDefinition,
    86  // nil and false otherwise.
    87  func actionDefinition() (*design.ActionDefinition, bool) {
    88  	a, ok := dslengine.CurrentDefinition().(*design.ActionDefinition)
    89  	if !ok {
    90  		dslengine.IncompatibleDSL()
    91  	}
    92  	return a, ok
    93  }
    94  
    95  // responseDefinition returns true and current context if it is a ResponseDefinition,
    96  // nil and false otherwise.
    97  func responseDefinition() (*design.ResponseDefinition, bool) {
    98  	r, ok := dslengine.CurrentDefinition().(*design.ResponseDefinition)
    99  	if !ok {
   100  		dslengine.IncompatibleDSL()
   101  	}
   102  	return r, ok
   103  }