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Removed previous code from type-notation.go

This commit is contained in:
Sasha Koshka 2022-09-27 15:48:47 -04:00
parent 4228d2b4cf
commit cd9de16338
4 changed files with 11 additions and 241 deletions
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4
parser/tree.go
View File

@ -230,7 +230,9 @@ type Phrase struct {
multiValuable
kind PhraseKind
// TODO: do not have this be an argument. make a string version, and
// and identifier version.
command Argument
// only applicable for PhraseKindOperator

240
parser/type-notation.go
View File

@ -48,11 +48,7 @@ func (parser *ParsingOperation) parseType () (what Type, err error) {
err = parser.skipWhitespace()
if err != nil { return }
err = parser.expect(
lexer.TokenKindName,
lexer.TokenKindUInt,
lexer.TokenKindLParen,
lexer.TokenKindLessThan)
err = parser.expect(lexer.TokenKindName, lexer.TokenKindUInt)
if err != nil { return }
if parser.token.Is(lexer.TokenKindName) {
@ -77,242 +73,8 @@ func (parser *ParsingOperation) parseType () (what Type, err error) {
err = parser.nextToken()
if err != nil { return }
} else if parser.token.Is(lexer.TokenKindLessThan) {
// parse default value
what.defaultValue, err = parser.parseBasicDefaultValue()
if err != nil { return }
} else if parser.token.Is(lexer.TokenKindLParen) {
// parse members and member default values
what.defaultValue,
what.members,
err = parser.parseObjectDefaultValueAndMembers()
if err != nil { return }
}
}
return
}
// parseBasicDefaultValue parses a default value of a non-object type.
func (parser *ParsingOperation) parseBasicDefaultValue () (
value Argument,
err error,
) {
value.location = parser.token.Location()
err = parser.expect(lexer.TokenKindLessThan)
if err != nil { return }
err = parser.nextToken()
if err != nil { return }
var attributes []Argument
defer func () {
// if we have multiple values, we need to return the full array
// instead.
if len(attributes) > 1 {
value.kind = ArgumentKindArrayDefaultValues
value.value = ArrayDefaultValues(attributes)
}
} ()
for {
err = parser.skipWhitespace()
if err != nil { return }
if parser.token.Is(lexer.TokenKindGreaterThan) { break }
value, err = parser.parseArgument()
if err != nil { return }
attributes = append(attributes, value)
}
err = parser.nextToken()
if err != nil { return }
return
}
// parseObjectDefaultValueAndMembers parses default values and new members of an
// object type.
func (parser *ParsingOperation) parseObjectDefaultValueAndMembers () (
value Argument,
members []TypeMember,
err error,
) {
value.location = parser.token.Location()
err = parser.expect(lexer.TokenKindLParen)
if err != nil { return }
parser.nextToken()
if err != nil { return }
var attributes ObjectDefaultValues
for {
err = parser.skipWhitespace()
if err != nil { return }
if parser.token.Is(lexer.TokenKindRParen) { break }
err = parser.expect(lexer.TokenKindDot)
if err != nil { return }
parser.nextToken(lexer.TokenKindName, lexer.TokenKindPermission)
if err != nil { return }
if parser.token.Is(lexer.TokenKindName) {
// parsing a defalut value for an inherited member
var memberName string
var memberValue Argument
memberName,
memberValue, err = parser.parseObjectInheritedMember()
if err != nil { return }
if value.kind == ArgumentKindNil {
// create default value map if it doesn't
// already exist
value.kind = ArgumentKindObjectDefaultValues
attributes = make(ObjectDefaultValues)
value.value = attributes
}
// TODO: error on duplicate
if memberValue.kind != ArgumentKindNil {
attributes[memberName] = memberValue
}
} else if parser.token.Is(lexer.TokenKindPermission) {
// parsing a member declaration
var member TypeMember
member, err = parser.parseObjectNewMember()
// TODO: error on duplicate
members = append(members, member)
if err != nil { return }
}
}
err = parser.nextToken()
if err != nil { return }
return
}
// parseObjectDefaultValue parses member default values only, and will throw an
// error when it encounteres a new member definition.
func (parser *ParsingOperation) parseObjectDefaultValue () (
value Argument,
err error,
) {
value.location = parser.token.Location()
err = parser.expect(lexer.TokenKindLParen)
if err != nil { return }
parser.nextToken()
if err != nil { return }
var attributes ObjectDefaultValues
for {
err = parser.skipWhitespace()
if err != nil { return }
if parser.token.Is(lexer.TokenKindRParen) { break }
err = parser.expect(lexer.TokenKindDot)
if err != nil { return }
parser.nextToken(lexer.TokenKindName)
if err != nil { return }
if value.kind == ArgumentKindNil {
value.kind = ArgumentKindObjectDefaultValues
attributes = make(ObjectDefaultValues)
value.value = attributes
}
var memberName string
var memberValue Argument
memberName,
memberValue, err = parser.parseObjectInheritedMember()
attributes[memberName] = memberValue
}
err = parser.nextToken()
if err != nil { return }
return
}
// .name:<value>
// parseObjectInheritedMember parses a new default value for an inherited
// member.
func (parser *ParsingOperation) parseObjectInheritedMember () (
name string,
value Argument,
err error,
) {
// get the name of the inherited member
err = parser.expect(lexer.TokenKindName)
value.location = parser.token.Location()
if err != nil { return }
name = parser.token.Value().(string)
// we require a default value to be present
err = parser.nextToken(lexer.TokenKindColon)
if err != nil { return }
err = parser.nextToken(lexer.TokenKindLParen, lexer.TokenKindLessThan)
if err != nil { return }
if parser.token.Is(lexer.TokenKindLessThan) {
// parse default value
value, err = parser.parseBasicDefaultValue()
if err != nil { return }
} else if parser.token.Is(lexer.TokenKindLParen) {
// parse member default values
value, err = parser.parseObjectDefaultValue()
if err != nil { return }
}
return
}
// .ro name:Type:qualifier:<value>
// parseObjectNewMember parses an object member declaration, and its
// default value if it exists.
func (parser *ParsingOperation) parseObjectNewMember () (
member TypeMember,
err error,
) {
// get member permission
err = parser.expect(lexer.TokenKindPermission)
member.location = parser.token.Location()
if err != nil { return }
member.permission = parser.token.Value().(types.Permission)
// get member name
err = parser.nextToken(lexer.TokenKindName)
if err != nil { return }
member.name = parser.token.Value().(string)
// get type
err = parser.nextToken(lexer.TokenKindColon)
if err != nil { return }
err = parser.nextToken(lexer.TokenKindName, lexer.TokenKindLBrace)
if err != nil { return }
member.what, err = parser.parseType()
if err != nil { return }
// get bit width
if parser.token.Is(lexer.TokenKindBinaryAnd) {
err = parser.nextToken(lexer.TokenKindUInt)
if err != nil { return }
member.bitWidth = parser.token.Value().(uint64)
err = parser.nextToken()
if err != nil { return }
}
return
}

6
tests/parser/data/main.arf
View File

@ -26,6 +26,12 @@ data ro jObject:Obj
(324
438)
# TODO: at some point, have this syntax for object literals. terminate members
# with newlines.
# data ro jObject:Bird (
# .this 324
# .that 438)
data ro lMutIntegerArray16:Int:16:mut
data ro mExternalData:Int:8

2
tests/parser/type/main.arf
View File

@ -8,7 +8,7 @@ type ro bBitFields:Obj
ro that:Int & 1
ro this:Int 298 & 24
type ro cInit:Obj:(
type ro cInit:Obj
ro that:String "hello world"
ro this:Int 23