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parser.mpl
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"parser" module
"control" includeModule
"ascii" includeModule
"String" includeModule
"astNodeType" includeModule
fillPositionInfo: [
astNode:;
lastPosition.offset @astNode.@offset set
lastPosition.line @astNode.@line set
lastPosition.column @astNode.@column set
currentFileNumber @astNode.@fileNumber set
];
makeLabelNode: [
children:;
name:;
result: AstNode;
@result fillPositionInfo
(name ":") assembleString @result.@token set
AstNodeType.Label @[email protected]
branch: AstNodeType.Label @[email protected];
children @branch.@children set
name @branch.@name set
@result
];
makeCodeNode: [
children:;
result: AstNode;
@result fillPositionInfo
"[" toString @result.@token set
AstNodeType.Code @[email protected]
branch: AstNodeType.Code @[email protected];
children @branch set
@result
];
makeObjectNode: [
children:;
result: AstNode;
@result fillPositionInfo
"{" toString @result.@token set
AstNodeType.Object @[email protected]
branch: AstNodeType.Object @[email protected];
children @branch set
@result
];
makeListNode: [
children:;
result: AstNode;
@result fillPositionInfo
"(" toString @result.@token set
AstNodeType.List @[email protected]
branch: AstNodeType.List @[email protected];
children @branch set
@result
];
makeNameNode: [
name:;
result: AstNode;
@result fillPositionInfo
name toString @result.@token set
AstNodeType.Name @[email protected]
branch: AstNodeType.Name @[email protected];
name toString @branch.@name set
@result
];
makeNameReadNode: [
name:;
result: AstNode;
@result fillPositionInfo
("@" name) assembleString @result.@token set
AstNodeType.NameRead @[email protected]
branch: AstNodeType.NameRead @[email protected];
name toString @branch.@name set
@result
];
makeNameWriteNode: [
name:;
result: AstNode;
@result fillPositionInfo
("!" name) assembleString @result.@token set
AstNodeType.NameWrite @[email protected]
branch: AstNodeType.NameWrite @[email protected];
name toString @branch.@name set
@result
];
makeNameMemberNode: [
name:;
result: AstNode;
@result fillPositionInfo
("." name) assembleString @result.@token set
AstNodeType.NameMember @[email protected]
branch: AstNodeType.NameMember @[email protected];
name toString @branch.@name set
@result
];
makeNameReadMemberNode: [
name:;
result: AstNode;
@result fillPositionInfo
(".@" name) assembleString @result.@token set
AstNodeType.NameReadMember @[email protected]
branch: AstNodeType.NameReadMember @[email protected];
name toString @branch.@name set
@result
];
makeNameWriteMemberNode: [
name:;
result: AstNode;
@result fillPositionInfo
(".!" name) assembleString @result.@token set
AstNodeType.NameWriteMember @[email protected]
branch: AstNodeType.NameWriteMember @[email protected];
name toString @branch.@name set
@result
];
makeStringNode: [
value:;
result: AstNode;
@result fillPositionInfo
"TEXT" toString @result.@token set
AstNodeType.String @[email protected]
branch: AstNodeType.String @[email protected];
value @branch set
@result
];
makeNumberi8Node: [
token:;
copy number:;
result: AstNode;
@result fillPositionInfo
token @result.@token set
AstNodeType.Numberi8 @[email protected]
branch: AstNodeType.Numberi8 @[email protected];
number @branch set
@result
];
makeNumberi16Node: [
token:;
copy number:;
result: AstNode;
@result fillPositionInfo
token @result.@token set
AstNodeType.Numberi16 @[email protected]
branch: AstNodeType.Numberi16 @[email protected];
number @branch set
@result
];
makeNumberi32Node: [
token:;
copy number:;
result: AstNode;
@result fillPositionInfo
token @result.@token set
AstNodeType.Numberi32 @[email protected]
branch: AstNodeType.Numberi32 @[email protected];
number @branch set
@result
];
makeNumberi64Node: [
token:;
copy number:;
result: AstNode;
@result fillPositionInfo
token @result.@token set
AstNodeType.Numberi64 @[email protected]
branch: AstNodeType.Numberi64 @[email protected];
number @branch set
@result
];
makeNumberixNode: [
token:;
copy number:;
result: AstNode;
@result fillPositionInfo
token @result.@token set
AstNodeType.Numberix @[email protected]
branch: AstNodeType.Numberix @[email protected];
number @branch set
@result
];
makeNumbern8Node: [
token:;
copy number:;
result: AstNode;
@result fillPositionInfo
token @result.@token set
AstNodeType.Numbern8 @[email protected]
branch: AstNodeType.Numbern8 @[email protected];
number @branch set
@result
];
makeNumbern16Node: [
token:;
copy number:;
result: AstNode;
@result fillPositionInfo
token @result.@token set
AstNodeType.Numbern16 @[email protected]
branch: AstNodeType.Numbern16 @[email protected];
number @branch set
@result
];
makeNumbern32Node: [
token:;
copy number:;
result: AstNode;
@result fillPositionInfo
token @result.@token set
AstNodeType.Numbern32 @[email protected]
branch: AstNodeType.Numbern32 @[email protected];
number @branch set
@result
];
makeNumbern64Node: [
token:;
copy number:;
result: AstNode;
@result fillPositionInfo
token @result.@token set
AstNodeType.Numbern64 @[email protected]
branch: AstNodeType.Numbern64 @[email protected];
number @branch set
@result
];
makeNumbernxNode: [
token:;
copy number:;
result: AstNode;
@result fillPositionInfo
token @result.@token set
AstNodeType.Numbernx @[email protected]
branch: AstNodeType.Numbernx @[email protected];
number @branch set
@result
];
makeReal32Node: [
token:;
copy number:;
result: AstNode;
@result fillPositionInfo
token @result.@token set
AstNodeType.Real32 @[email protected]
branch: AstNodeType.Real32 @[email protected];
number @branch set
@result
];
makeReal64Node: [
token:;
copy number:;
result: AstNode;
@result fillPositionInfo
token @result.@token set
AstNodeType.Real64 @[email protected]
branch: AstNodeType.Real64 @[email protected];
number @branch set
@result
];
makeParserConstants: [{
eof: [ 0n32];
makeLookupTable: [
av:;
result: Cond Array;
256 @result.resize
@result [.@value p:; FALSE @p set] each
av [
v: .value;
TRUE v 0 cast @result.at set
] each
result
];
joinLookupTables: [
right:;
left:;
result: Cond Array;
256 @result.resize
@result [
pair:;
i: pair.index copy;
i left.at i right.at or @pair.@value set
] each
result
];
starters: (ascii.openRBr ascii.openSBr ascii.openFBr) makeLookupTable;
terminators: (ascii.null ascii.closeRBr ascii.closeSBr ascii.closeFBr ascii.semicolon) makeLookupTable;
digits: (ascii.zero ascii.one ascii.two ascii.three ascii.four ascii.five ascii.six ascii.seven ascii.eight ascii.nine) makeLookupTable;
numberSigns: (ascii.plus ascii.minus) makeLookupTable;
specials: (ascii.space ascii.cr ascii.lf ascii.colon ascii.grid) makeLookupTable starters joinLookupTables terminators joinLookupTables;
begExp: (ascii.eCode ascii.eCodeBig) makeLookupTable;
endNumbers: specials (ascii.comma) makeLookupTable joinLookupTables;
endNames: specials copy;
hexDigits: (
ascii.zero ascii.one ascii.two ascii.three ascii.four ascii.five ascii.six ascii.seven ascii.eight ascii.nine
ascii.aCode ascii.bCode ascii.cCode ascii.dCode ascii.eCode ascii.fCode
ascii.aCodeBig ascii.bCodeBig ascii.cCodeBig ascii.dCodeBig ascii.eCodeBig ascii.fCodeBig
) makeLookupTable;
hexToInt: [
result: Nat32 Array;
256 @result.resize
10 [i 0n32 cast ascii.zero 0 cast i + @result.at set] times
6 [i 10 + 0n32 cast ascii.aCode 0 cast i + @result.at set] times
6 [i 10 + 0n32 cast ascii.aCodeBig 0 cast i + @result.at set] times
result
] call;
}];
inArray: [
where:;
copy code:;
code 256n32 < [code 0 cast where.at copy] &&
];
undo: [
mainResult.success [
prevPosition @currentPosition set
currentPosition.offset 0 < not [
currentPosition.offset splittedString.chars.at @currentSymbol set
currentSymbol stringMemory Nat8 addressToReference Nat32 cast @currentCode set
] [
StringView @currentSymbol set
ascii.null @currentCode set
] if
] when
];
iterate: [
mainResult.success [
currentPosition @prevPosition set
currentCode ascii.lf = [
0 dynamic @currentPosition.@column set
currentPosition.line 1 + @currentPosition.@line set
] when
currentPosition.offset 1 + @currentPosition.@offset set
currentPosition.column 1 + @currentPosition.@column set
currentPosition.offset splittedString.chars.getSize < [
currentPosition.offset splittedString.chars.at @currentSymbol set
currentSymbol stringMemory Nat8 addressToReference Nat32 cast @currentCode set
] [
StringView @currentSymbol set
ascii.null @currentCode set
] if
] when
];
lexicalError: [
toString @mainResult.@errorInfo.@message set
currentPosition @mainResult.@errorInfo.@position set
FALSE @mainResult.@success set
];
parseStringConstant: [
nameSymbols: StringView Array;
slashed: FALSE dynamic;
iterate
[
currentCode ascii.backSlash = [
slashed [
currentSymbol @nameSymbols.pushBack
FALSE @slashed set
] [
TRUE @slashed set
] if
TRUE
] [
currentCode ascii.quote = [
slashed [
currentSymbol @nameSymbols.pushBack
TRUE
] [
FALSE
] if
FALSE @slashed set
] [
currentCode ascii.null = [
"unterminated string" lexicalError
FALSE
] [
currentSymbol @nameSymbols.pushBack
FALSE @slashed set
TRUE
] if
] if
] if
iterate
] loop
nameSymbols assembleString makeStringNode @[email protected]
TRUE
];
tryParseNumberAfterSign: [
currentCode pc.digits inArray [
undo parseNumber
] [
undo parseName
] if
];
dCheck: [currentCode pc.digits inArray not ["wrong number constant" lexicalError] when];
xCheck: [
currentCode pc.digits inArray not [
currentCode ascii.xCode = [
-2 @currentArray.pushBack
iterate
] [
"wrong number constant" lexicalError
] if
] when
];
parseDecNumber: [
copy hasMinus:;
IntArray: [Int32 Array];
beforeDot: IntArray;
afterDot: IntArray;
afterE: IntArray;
afterT: IntArray;
currentArray: @beforeDot;
hasEMinus: FALSE;
typeClass: 0 dynamic;
stage: 0 dynamic;
#0 before dot or else
#1 after dot
#2 after e
#3 after n/r
result: 0 dynamic;
tokenBegin: currentPosition.offset hasMinus [1 -][copy] if;
tokenEnd: tokenBegin copy;
[
currentCode pc.digits inArray [
currentCode ascii.zero - 0 cast @currentArray.pushBack
iterate TRUE
] [
currentCode ascii.dot = [
stage 0 = not [
FALSE
] [
1 @stage set
iterate
currentCode pc.digits inArray [
@afterDot !currentArray
2 @typeClass set
TRUE
] [
undo FALSE
] if
] if
] [
currentCode ascii.nCode = [
stage 0 = not ["wrong number constant" lexicalError] when
3 @stage set
iterate TRUE
@afterT !currentArray
xCheck
1 @typeClass set
] [
currentCode ascii.iCode = [
stage 0 = not ["wrong number constant" lexicalError] when
3 @stage set
iterate TRUE
@afterT !currentArray
xCheck
] [
currentCode ascii.rCode = [
stage 1 = stage 2 = or not ["wrong number constant" lexicalError] when
3 @stage set
iterate TRUE
@afterT !currentArray
dCheck
] [
currentCode pc.begExp inArray [
stage 1 = not ["wrong number constant" lexicalError] when
iterate TRUE
@afterE !currentArray
currentCode pc.numberSigns inArray [
currentCode ascii.minus = @hasEMinus set
iterate
] when
dCheck
] [
currentCode pc.endNumbers inArray [
FALSE
] [
"error in number constant" lexicalError
FALSE
] if
] if
] if
] if
] if
] if
] if
p:;
p [currentPosition.offset @tokenEnd set] when
p mainResult.success and
] loop
token: tokenBegin tokenEnd splittedString.chars makeSubRange assembleString;
afterT.getSize 2 > [ "error in number constant" lexicalError ] when
typeName: 0 dynamic;
afterT.getSize [typeName 100 * i afterT.at + 1 + @typeName set] times
typeClass 2 = [
type: 0.0r64 dynamic;
ten: 10.0r64 dynamic;
result: 0.0r64 dynamic;
beforeDot.getSize [result 10.0r64 * i beforeDot.at type cast + @result set] times
tenRcp: 0.1r64 dynamic;
fracPartFactor: tenRcp copy;
afterDot.getSize [
digit: i afterDot.at type cast;
digit fracPartFactor * result + @result set
fracPartFactor tenRcp * @fracPartFactor set
] times
decOrder: 0.0r64 dynamic;
afterE.getSize [decOrder 10.0r64 * i afterE.at type cast + @decOrder set] times
hasEMinus [decOrder neg @decOrder set] when
hasMinus [result neg @result set] when
result 10.0r64 decOrder ^ * @result set
typeName 705 = typeName 0 = or [
result token makeReal64Node @[email protected]
] [
typeName 403 = [
result token makeReal32Node @[email protected]
] [
"wrong real constant suffix" lexicalError
] if
] if
] [
typeClass 1 = [
hasMinus ["negative natural constants not allowed" lexicalError] when
type: 0n64 dynamic;
ten: 10n64 dynamic;
result: 0n64 dynamic;
beforeDot.getSize [result 10n64 * i beforeDot.at 0i64 cast type cast + @result set] times
typeName 705 = [
result token makeNumbern64Node @[email protected]
] [
typeName 403 = typeName 0 = or [
result token makeNumbern32Node @[email protected]
] [
typeName 207 = [
result token makeNumbern16Node @[email protected]
] [
typeName 9 = [
result token makeNumbern8Node @[email protected]
] [
typeName -1 = [
result token makeNumbernxNode @[email protected]
] [
"wrong natural constant suffix" lexicalError
] if
] if
] if
] if
] if
] [
type: 0i64 dynamic;
ten: 10i64 dynamic;
result: 0i64 dynamic;
beforeDot.getSize [result 10i64 * i beforeDot.at type cast + @result set] times
hasMinus [result neg @result set] when
typeName 705 = [
result token makeNumberi64Node @[email protected]
] [
typeName 403 = typeName 0 = or [
result token makeNumberi32Node @[email protected]
] [
typeName 207 = [
result token makeNumberi16Node @[email protected]
] [
typeName 9 = [
result token makeNumberi8Node @[email protected]
] [
typeName -1 = [
result token makeNumberixNode @[email protected]
] [
"wrong integer constant suffix" lexicalError
] if
] if
] if
] if
] if
] if
] if
mainResult.success copy
];
parseHexNumber: [
copy hasMinus:;
IntArray: [Int32 Array];
beforeT: IntArray;
afterT: IntArray;
currentArray: @beforeT;
typeClass: 0 dynamic;
stage: 0 dynamic;
#0 before n
#1 after n
result: 0 dynamic;
tokenBegin: currentPosition.offset hasMinus [3 -][2 -] if;
tokenEnd: tokenBegin copy;
[
currentCode pc.hexDigits inArray [
currentCode 0 cast pc.hexToInt.at 0 cast @currentArray.pushBack
iterate TRUE
] [
currentCode ascii.dot = [
FALSE
] [
currentCode ascii.nCode = [
stage 0 = not ["wrong number constant" lexicalError] when
3 @stage set
iterate TRUE
@afterT !currentArray
xCheck
1 @typeClass set
] [
currentCode ascii.iCode = [
stage 0 = not ["wrong number constant" lexicalError] when
3 @stage set
iterate TRUE
@afterT !currentArray
xCheck
] [
currentCode pc.endNumbers inArray [
FALSE
] [
"error in number constant" lexicalError
FALSE
] if
] if
] if
] if
] if
p:;
p [ currentPosition.offset @tokenEnd set ] when
p mainResult.success and
] loop
token: tokenBegin tokenEnd splittedString.chars makeSubRange assembleString;
afterT.getSize 2 > [ "error in number constant" lexicalError ] when
typeName: 0 dynamic;
afterT.getSize [typeName 100 * i afterT.at + 1 + @typeName set] times
hasMinus ["negative hex constants not allowed" lexicalError] when
typeClass 1 = [
type: 0n64;
ten: 10n64;
result: 0n64;
beforeT.getSize 0 = ["empty hex constant" lexicalError] when
beforeT.getSize [result 16n64 * i beforeT.at 0i64 cast type cast + @result set] times
typeName 705 = [
result token makeNumbern64Node @[email protected]
] [
typeName 403 = typeName 0 = or [
result token makeNumbern32Node @[email protected]
] [
typeName 207 = [
result token makeNumbern16Node @[email protected]
] [
typeName 9 = [
result token makeNumbern8Node @[email protected]
] [
typeName -1 = [
result token makeNumbernxNode @[email protected]
] [
"wrong natural constant suffix" lexicalError
] if
] if
] if
] if
] if
] [
type: 0i64 dynamic;
ten: 10i64 dynamic;
result: 0i64 dynamic;
beforeT.getSize 0 = ["empty hex constant" lexicalError] when
beforeT.getSize [result 16i64 * i beforeT.at type cast + @result set] times
typeName 705 = [
result token makeNumberi64Node @[email protected]
] [
typeName 403 = typeName 0 = or [
result token makeNumberi32Node @[email protected]
] [
typeName 207 = [
result token makeNumberi16Node @[email protected]
] [
typeName 9 = [
result token makeNumberi8Node @[email protected]
] [
typeName -1 = [
result token makeNumberixNode @[email protected]
] [
"wrong integer constant suffix" lexicalError
] if
] if
] if
] if
] if
] if
mainResult.success copy
];
parseNumber: [
hasMinus: FALSE dynamic;
currentCode ascii.minus = [
TRUE dynamic @hasMinus set
iterate
] [
currentCode ascii.plus = [iterate] when
] if
currentCode ascii.zero = [
iterate
currentCode ascii.xCode = [
iterate hasMinus parseHexNumber
] [
currentCode ascii.iCode = currentCode ascii.nCode = or currentCode ascii.dot = or currentCode pc.endNumbers inArray or [
undo hasMinus parseDecNumber
] [
"lead zeros in number are not allowed" lexicalError
FALSE
] if
] if
] [
hasMinus parseDecNumber
] if
];
makeLabel: [
name:;
lastPosition @unfinishedPositions.pushBack
ascii.semicolon @unfinishedTerminators.pushBack
name toString @unfinishedLabelNames.pushBack
IndexArray @unfinishedNodes.pushBack
];
parseName: [
DotState: (
"UNKNOWN"
"MULTI_DOT"
"NOT_A_MEMBER"
"WAS_FIRST_DOT"
"MEMBER"
) Int32 enum;
dotState: DotState.UNKNOWN dynamic;
read: FALSE dynamic;
write: FALSE dynamic;
label: FALSE dynamic;
checkOffset: currentPosition.offset copy;
checkFirst: [currentPosition.offset checkOffset > ["invalid identifier" lexicalError] when];
nameSymbols: StringView Array;
first: TRUE dynamic;
[
first [currentCode pc.digits inArray] && [
"idendifiers can't begin from number" lexicalError
FALSE
] [
currentCode ascii.quote = [
"quote cannot be part of identifier" lexicalError
FALSE
] [
currentCode ascii.dot = [
dotState (
DotState.MULTI_DOT [
currentSymbol @nameSymbols.pushBack
iterate TRUE
]
DotState.NOT_A_MEMBER [
currentSymbol @nameSymbols.pushBack
DotState.MULTI_DOT @dotState set
iterate TRUE
]
DotState.WAS_FIRST_DOT [
currentSymbol @nameSymbols.pushBack
DotState.MULTI_DOT @dotState set
iterate TRUE
]
[
nameSymbols.getSize 0 > [
FALSE
] [
checkFirst
checkOffset 1 + @checkOffset set
currentSymbol @nameSymbols.pushBack
DotState.WAS_FIRST_DOT @dotState set
iterate TRUE
] if
]
) case
] [
currentCode ascii.at = [
checkFirst
dotState DotState.UNKNOWN = [DotState.NOT_A_MEMBER @dotState set] when
TRUE @read set
iterate TRUE
] [
currentCode ascii.exclamation = [
checkFirst
dotState DotState.UNKNOWN = [DotState.NOT_A_MEMBER @dotState set] when
TRUE @write set
iterate TRUE
] [
currentCode ascii.comma = nameSymbols.getSize 0 > and [
FALSE
] [
currentCode pc.endNames inArray [
currentCode ascii.colon = [
TRUE @label set
iterate
] when
FALSE
] [
dotState
(
DotState.MULTI_DOT [
"identifier cannot start from many dots" lexicalError
]
DotState.WAS_FIRST_DOT [
DotState.MEMBER @dotState set
@nameSymbols.clear
]
DotState.MEMBER [
]
[
DotState.UNKNOWN @dotState set
]
) case
nameSymbols.getSize 1 > [0 nameSymbols.at "," =] && [
"identifier cannot start from comma" lexicalError
] when
currentSymbol @nameSymbols.pushBack
iterate
FALSE @first set
TRUE
] if
] if
] if
] if
] if
] if
] if
mainResult.success and
] loop
mainResult.success [
read write and ["wrong identifier" lexicalError] when
nameSymbols.getSize 0 = [
read [
label ["@" makeLabel FALSE]["@" makeNameNode @[email protected] TRUE] if
] [
write [
label ["!" makeLabel FALSE]["!" makeNameNode @[email protected] TRUE] if
] [
"empty name" lexicalError
FALSE
] if
] if
] [
name: nameSymbols assembleString;
label [
dotState DotState.MEMBER = read write or or ["label declaration must be without . @ ! modifiers" lexicalError] when
name makeLabel FALSE
] [
dotState DotState.MEMBER = [
read [
name makeNameReadMemberNode @[email protected] TRUE
] [
write [
name makeNameWriteMemberNode @[email protected] TRUE
] [
name makeNameMemberNode @[email protected] TRUE
] if
] if
] [
read [
name makeNameReadNode @[email protected] TRUE
] [
write [
name makeNameWriteNode @[email protected] TRUE
] [
name makeNameNode @[email protected] TRUE
] if
] if
] if
] if
] if
] [
FALSE
] if
];
parseIdentifier: [
compileOnce
currentCode ascii.quote = [
parseStringConstant
] [
currentCode pc.digits inArray [
parseNumber
] [
currentCode pc.numberSigns inArray [
iterate tryParseNumberAfterSign
] [
parseName
] if
] if
] if
];
parseComment: [
[
iterate
currentCode ascii.null = currentCode ascii.lf = or not
] loop
];
addNestedNode: [
currentPosition @unfinishedPositions.pushBack
IndexArray @unfinishedNodes.pushBack
currentCode ascii.openRBr = [
ascii.closeRBr @unfinishedTerminators.pushBack
] [
currentCode ascii.openFBr = [
ascii.closeFBr @unfinishedTerminators.pushBack
] [
currentCode ascii.openSBr = [
ascii.closeSBr @unfinishedTerminators.pushBack
] [
"unknown starter for nested node" lexicalError
] if
] if
] if
iterate
];
addToLastUnfinished: [
mainResult.memory.getSize 1 - @unfinishedNodes.last.pushBack