133 lines
3.3 KiB
Go
133 lines
3.3 KiB
Go
package parser
|
|
|
|
import "git.tebibyte.media/sashakoshka/arf/types"
|
|
import "git.tebibyte.media/sashakoshka/arf/lexer"
|
|
import "git.tebibyte.media/sashakoshka/arf/infoerr"
|
|
|
|
// parseFaceSection parses an interface section.
|
|
func (parser *ParsingOperation) parseFaceSection () (
|
|
section *FaceSection,
|
|
err error,
|
|
) {
|
|
err = parser.expect(lexer.TokenKindName)
|
|
if err != nil { return }
|
|
|
|
section = &FaceSection {
|
|
location: parser.token.Location(),
|
|
behaviors: make(map[string] FaceBehavior),
|
|
}
|
|
|
|
// get permission
|
|
err = parser.nextToken(lexer.TokenKindPermission)
|
|
if err != nil { return }
|
|
section.permission = parser.token.Value().(types.Permission)
|
|
|
|
// get name
|
|
err = parser.nextToken(lexer.TokenKindName)
|
|
if err != nil { return }
|
|
section.name = parser.token.Value().(string)
|
|
|
|
// parse inherited interface
|
|
err = parser.nextToken(lexer.TokenKindColon)
|
|
if err != nil { return }
|
|
err = parser.nextToken(lexer.TokenKindName)
|
|
if err != nil { return }
|
|
section.inherits, err = parser.parseIdentifier()
|
|
if err != nil { return }
|
|
err = parser.nextToken(lexer.TokenKindNewline)
|
|
if err != nil { return }
|
|
err = parser.nextToken()
|
|
if err != nil { return }
|
|
|
|
// parse members
|
|
for {
|
|
// if we've left the block, stop parsing
|
|
if !parser.token.Is(lexer.TokenKindIndent) { return }
|
|
if parser.token.Value().(int) != 1 { return }
|
|
|
|
// parse behavior
|
|
behaviorBeginning := parser.token.Location()
|
|
var behavior FaceBehavior
|
|
behavior, err = parser.parseFaceBehavior()
|
|
|
|
// add to section
|
|
_, exists := section.behaviors[behavior.name]
|
|
if exists {
|
|
err = infoerr.NewError (
|
|
behaviorBeginning,
|
|
"multiple behaviors named " + behavior.name +
|
|
" in this interface",
|
|
infoerr.ErrorKindError)
|
|
return
|
|
}
|
|
section.behaviors[behavior.name] = behavior
|
|
|
|
if err != nil { return }
|
|
}
|
|
return
|
|
}
|
|
|
|
// parseFaceBehavior parses a single interface behavior. Indentation level is
|
|
// assumed.
|
|
func (parser *ParsingOperation) parseFaceBehavior () (
|
|
behavior FaceBehavior,
|
|
err error,
|
|
) {
|
|
err = parser.expect(lexer.TokenKindIndent)
|
|
if err != nil { return }
|
|
|
|
// get name
|
|
err = parser.nextToken(lexer.TokenKindName)
|
|
if err != nil { return }
|
|
behavior.name = parser.token.Value().(string)
|
|
|
|
err = parser.nextToken(lexer.TokenKindNewline)
|
|
if err != nil { return }
|
|
err = parser.nextToken()
|
|
if err != nil { return }
|
|
|
|
for {
|
|
// if we've left the block, stop parsing
|
|
if !parser.token.Is(lexer.TokenKindIndent) { return }
|
|
if parser.token.Value().(int) != 2 { return }
|
|
|
|
// get preceding symbol
|
|
err = parser.nextToken (
|
|
lexer.TokenKindGreaterThan,
|
|
lexer.TokenKindLessThan)
|
|
if err != nil { return }
|
|
kind := parser.token.Kind()
|
|
|
|
var declaration Declaration
|
|
|
|
// get name
|
|
err = parser.nextToken(lexer.TokenKindName)
|
|
if err != nil { return }
|
|
declaration.name = parser.token.Value().(string)
|
|
|
|
// parse inherited type
|
|
err = parser.nextToken(lexer.TokenKindColon)
|
|
if err != nil { return }
|
|
err = parser.nextToken()
|
|
if err != nil { return }
|
|
declaration.what, err = parser.parseType()
|
|
if err != nil { return }
|
|
err = parser.expect(lexer.TokenKindNewline)
|
|
if err != nil { return }
|
|
err = parser.nextToken()
|
|
if err != nil { return }
|
|
|
|
if kind == lexer.TokenKindGreaterThan {
|
|
behavior.inputs = append (
|
|
behavior.inputs,
|
|
declaration)
|
|
} else {
|
|
behavior.outputs = append (
|
|
behavior.outputs,
|
|
declaration)
|
|
}
|
|
}
|
|
|
|
return
|
|
}
|