Transpile procedures and statements

This commit is contained in:
Eugen Wissner 2025-05-29 00:24:30 +02:00
parent 04a52d5ad7
commit 4adac0531f
Signed by: belka
GPG Key ID: A27FDC1E8EE902C0
2 changed files with 360 additions and 91 deletions

View File

@ -215,7 +215,8 @@ BEGIN
INC(TokenStart); INC(TokenStart);
INC(Index) INC(Index)
END; END;
RETURN (Index = Length(Keyword)) AND (TokenStart = TokenEnd) AND Result Result := (Index = Length(Keyword)) AND (TokenStart = TokenEnd) AND Result;
RETURN Result
END CompareKeyword; END CompareKeyword;
(* Reached the end of file. *) (* Reached the end of file. *)
@ -236,15 +237,20 @@ PROCEDURE TransitionActionFinalize(ALexer: PLexer; AToken: PLexerToken);
BEGIN BEGIN
IF ALexer^.Start^ = ':' THEN IF ALexer^.Start^ = ':' THEN
AToken^.Kind := lexerKindColon AToken^.Kind := lexerKindColon
ELSIF ALexer^.Start^ = '>' THEN END;
IF ALexer^.Start^ = '>' THEN
AToken^.Kind := lexerKindGreaterThan AToken^.Kind := lexerKindGreaterThan
ELSIF ALexer^.Start^ = '<' THEN END;
IF ALexer^.Start^ = '<' THEN
AToken^.Kind := lexerKindLessThan AToken^.Kind := lexerKindLessThan
ELSIF ALexer^.Start^ = '(' THEN END;
IF ALexer^.Start^ = '(' THEN
AToken^.Kind := lexerKindLeftParen AToken^.Kind := lexerKindLeftParen
ELSIF ALexer^.Start^ = '-' THEN END;
IF ALexer^.Start^ = '-' THEN
AToken^.Kind := lexerKindLeftParen AToken^.Kind := lexerKindLeftParen
ELSIF ALexer^.Start^ = '.' THEN END;
IF ALexer^.Start^ = '.' THEN
AToken^.Kind := lexerKindDot AToken^.Kind := lexerKindDot
END END
END TransitionActionFinalize; END TransitionActionFinalize;
@ -255,14 +261,18 @@ BEGIN
IF ALexer^.Start^ = '<' THEN IF ALexer^.Start^ = '<' THEN
IF ALexer^.Current^ = '>' THEN IF ALexer^.Current^ = '>' THEN
AToken^.Kind := lexerKindNotEqual AToken^.Kind := lexerKindNotEqual
ELSIF ALexer^.Current^ = '=' THEN END;
IF ALexer^.Current^ = '=' THEN
AToken^.Kind := lexerKindLessEqual AToken^.Kind := lexerKindLessEqual
END END
ELSIF (ALexer^.Start^ = '>') AND (ALexer^.Current^ = '=') THEN END;
IF (ALexer^.Start^ = '>') AND (ALexer^.Current^ = '=') THEN
AToken^.Kind := lexerKindGreaterEqual AToken^.Kind := lexerKindGreaterEqual
ELSIF (ALexer^.Start^ = '.') AND (ALexer^.Current^ = '.') THEN END;
IF (ALexer^.Start^ = '.') AND (ALexer^.Current^ = '.') THEN
AToken^.Kind := lexerKindRange AToken^.Kind := lexerKindRange
ELSIF (ALexer^.Start^ = ':') AND (ALexer^.Current^ = '=') THEN END;
IF (ALexer^.Start^ = ':') AND (ALexer^.Current^ = '=') THEN
AToken^.Kind := lexerKindAssignment AToken^.Kind := lexerKindAssignment
END; END;
INC(ALexer^.Current) INC(ALexer^.Current)
@ -275,14 +285,16 @@ BEGIN
INC(ALexer^.Start) INC(ALexer^.Start)
END TransitionActionSkip; END TransitionActionSkip;
(* 0x04. Delimited string action. *) (* Delimited string action. *)
PROCEDURE TransitionActionDelimited(ALexer: PLexer; AToken: PLexerToken); PROCEDURE TransitionActionDelimited(ALexer: PLexer; AToken: PLexerToken);
BEGIN BEGIN
IF ALexer^.Start^ = '(' THEN IF ALexer^.Start^ = '(' THEN
AToken^.Kind := lexerKindComment AToken^.Kind := lexerKindComment
ELSIF ALexer^.Start^ = '"' THEN END;
IF ALexer^.Start^ = '"' THEN
AToken^.Kind := lexerKindCharacter AToken^.Kind := lexerKindCharacter
ELSIF ALexer^.Start^ = "'" THEN END;
IF ALexer^.Start^ = "'" THEN
AToken^.Kind := lexerKindString AToken^.Kind := lexerKindString
END; END;
INC(ALexer^.Current) INC(ALexer^.Current)
@ -291,93 +303,150 @@ END TransitionActionDelimited;
(* Finalize keyword or identifier. *) (* Finalize keyword or identifier. *)
PROCEDURE TransitionActionKeyId(ALexer: PLexer; AToken: PLexerToken); PROCEDURE TransitionActionKeyId(ALexer: PLexer; AToken: PLexerToken);
BEGIN BEGIN
AToken^.Kind := lexerKindIdentifier;
IF CompareKeyword('PROGRAM', ALexer^.Start, ALexer^.Current) THEN IF CompareKeyword('PROGRAM', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindProgram AToken^.Kind := lexerKindProgram
ELSIF CompareKeyword('IMPORT', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('IMPORT', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindImport AToken^.Kind := lexerKindImport
ELSIF CompareKeyword('CONST', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('CONST', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindConst AToken^.Kind := lexerKindConst
ELSIF CompareKeyword('VAR', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('VAR', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindVar AToken^.Kind := lexerKindVar
ELSIF CompareKeyword('IF', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('IF', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindIf AToken^.Kind := lexerKindIf
ELSIF CompareKeyword('THEN', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('THEN', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindThen AToken^.Kind := lexerKindThen
ELSIF CompareKeyword('ELSIF', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('ELSIF', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindElsif AToken^.Kind := lexerKindElsif
ELSIF CompareKeyword('ELSE', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('ELSE', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindElse AToken^.Kind := lexerKindElse
ELSIF CompareKeyword('WHILE', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('WHILE', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindWhile AToken^.Kind := lexerKindWhile
ELSIF CompareKeyword('DO', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('DO', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindDo AToken^.Kind := lexerKindDo
ELSIF CompareKeyword('PROCEDURE', ALexer^.Start, ALexer^.Current) OR CompareKeyword('proc', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('proc', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindProc AToken^.Kind := lexerKindProc
ELSIF CompareKeyword('BEGIN', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('BEGIN', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindBegin AToken^.Kind := lexerKindBegin
ELSIF CompareKeyword('END', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('END', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindEnd AToken^.Kind := lexerKindEnd
ELSIF CompareKeyword('TYPE', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('TYPE', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindType AToken^.Kind := lexerKindType
ELSIF CompareKeyword('RECORD', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('RECORD', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindRecord AToken^.Kind := lexerKindRecord
ELSIF CompareKeyword('UNION', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('UNION', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindUnion AToken^.Kind := lexerKindUnion
ELSIF CompareKeyword('NIL', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('NIL', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindNull AToken^.Kind := lexerKindNull
ELSIF CompareKeyword('AND', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('AND', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindAnd AToken^.Kind := lexerKindAnd
ELSIF CompareKeyword('OR', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('OR', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindOr AToken^.Kind := lexerKindOr
ELSIF CompareKeyword('RETURN', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('RETURN', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindReturn AToken^.Kind := lexerKindReturn
ELSIF CompareKeyword('DEFINITION', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('DEFINITION', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindDefinition AToken^.Kind := lexerKindDefinition
ELSIF CompareKeyword('TO', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('TO', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindTo AToken^.Kind := lexerKindTo
ELSIF CompareKeyword('CASE', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('CASE', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindCase AToken^.Kind := lexerKindCase
ELSIF CompareKeyword('OF', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('OF', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindOf AToken^.Kind := lexerKindOf
ELSIF CompareKeyword('FROM', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('FROM', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindFrom AToken^.Kind := lexerKindFrom
ELSIF CompareKeyword('MODULE', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('MODULE', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindModule AToken^.Kind := lexerKindModule
ELSIF CompareKeyword('IMPLEMENTATION', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('IMPLEMENTATION', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindImplementation AToken^.Kind := lexerKindImplementation
ELSIF CompareKeyword('POINTER', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('POINTER', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindPointer AToken^.Kind := lexerKindPointer
ELSIF CompareKeyword('ARRAY', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('ARRAY', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindArray AToken^.Kind := lexerKindArray
ELSIF CompareKeyword('TRUE', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('TRUE', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindBoolean; AToken^.Kind := lexerKindBoolean;
AToken^.booleanKind := TRUE AToken^.booleanKind := TRUE
ELSIF CompareKeyword('FALSE', ALexer^.Start, ALexer^.Current) THEN END;
IF CompareKeyword('FALSE', ALexer^.Start, ALexer^.Current) THEN
AToken^.Kind := lexerKindBoolean; AToken^.Kind := lexerKindBoolean;
AToken^.booleanKind := FALSE AToken^.booleanKind := FALSE
ELSE END
AToken^.Kind := lexerKindIdentifier
END;
END TransitionActionKeyId; END TransitionActionKeyId;
(* Action for tokens containing only one character. The character cannot be (* Action for tokens containing only one character. The character cannot be
* followed by other characters forming a composite token. *) * followed by other characters forming a composite token. *)
PROCEDURE TransitionActionSingle(ALexer: PLexer; AToken: PLexerToken); PROCEDURE TransitionActionSingle(ALexer: PLexer; AToken: PLexerToken);
BEGIN BEGIN
CASE ALexer^.Current^ OF IF ALexer^.Current^ = '&' THEN
'&': AToken^.Kind := lexerKindAnd | AToken^.Kind := lexerKindAnd
';': AToken^.Kind := lexerKindSemicolon | END;
',': AToken^.Kind := lexerKindComma | IF ALexer^.Current^ = ';' THEN
')': AToken^.Kind := lexerKindRightParen | AToken^.Kind := lexerKindSemicolon
'[': AToken^.Kind := lexerKindLeftSquare | END;
']': AToken^.Kind := lexerKindRightSquare | IF ALexer^.Current^ = ',' THEN
'^': AToken^.Kind := lexerKindHat | AToken^.Kind := lexerKindComma
'=': AToken^.Kind := lexerKindEqual | END;
'+': AToken^.Kind := lexerKindPlus | IF ALexer^.Current^ = ',' THEN
'/': AToken^.Kind := lexerKindDivision | AToken^.Kind := lexerKindComma
'%': AToken^.Kind := lexerKindRemainder | END;
'@': AToken^.Kind := lexerKindAt | IF ALexer^.Current^ = ')' THEN
'|': AToken^.Kind := lexerKindPipe AToken^.Kind := lexerKindRightParen
END;
IF ALexer^.Current^ = '[' THEN
AToken^.Kind := lexerKindLeftSquare
END;
IF ALexer^.Current^ = ']' THEN
AToken^.Kind := lexerKindRightSquare
END;
IF ALexer^.Current^ = '^' THEN
AToken^.Kind := lexerKindHat
END;
IF ALexer^.Current^ = '=' THEN
AToken^.Kind := lexerKindEqual
END;
IF ALexer^.Current^ = '+' THEN
AToken^.Kind := lexerKindPlus
END;
IF ALexer^.Current^ = '/' THEN
AToken^.Kind := lexerKindDivision
END;
IF ALexer^.Current^ = '%' THEN
AToken^.Kind := lexerKindRemainder
END;
IF ALexer^.Current^ = '@' THEN
AToken^.Kind := lexerKindAt
END;
IF ALexer^.Current^ = '|' THEN
AToken^.Kind := lexerKindPipe
END; END;
INC(ALexer^.Current) INC(ALexer^.Current)
END TransitionActionSingle; END TransitionActionSingle;
@ -389,7 +458,8 @@ BEGIN
END TransitionActionInteger; END TransitionActionInteger;
PROCEDURE SetDefaultTransition(CurrentState: TransitionState; DefaultAction: TransitionAction; NextState: TransitionState); PROCEDURE SetDefaultTransition(CurrentState: TransitionState; DefaultAction: TransitionAction; NextState: TransitionState);
VAR DefaultTransition: Transition; VAR
DefaultTransition: Transition;
BEGIN BEGIN
DefaultTransition.Action := DefaultAction; DefaultTransition.Action := DefaultAction;
DefaultTransition.NextState := NextState; DefaultTransition.NextState := NextState;
@ -415,7 +485,7 @@ BEGIN
Transitions[ORD(CurrentState)][ORD(transitionClassDoubleQuote)] := DefaultTransition; Transitions[ORD(CurrentState)][ORD(transitionClassDoubleQuote)] := DefaultTransition;
Transitions[ORD(CurrentState)][ORD(transitionClassGreater)] := DefaultTransition; Transitions[ORD(CurrentState)][ORD(transitionClassGreater)] := DefaultTransition;
Transitions[ORD(CurrentState)][ORD(transitionClassLess)] := DefaultTransition; Transitions[ORD(CurrentState)][ORD(transitionClassLess)] := DefaultTransition;
Transitions[ORD(CurrentState)][ORD(transitionClassOther)] := DefaultTransition; Transitions[ORD(CurrentState)][ORD(transitionClassOther)] := DefaultTransition
END SetDefaultTransition; END SetDefaultTransition;
(* (*
@ -705,6 +775,8 @@ BEGIN
END LexerCurrent; END LexerCurrent;
PROCEDURE LexerLex(ALexer: PLexer): LexerToken; PROCEDURE LexerLex(ALexer: PLexer): LexerToken;
VAR
Result: LexerToken;
BEGIN BEGIN
IF ALexer^.Length = 0 THEN IF ALexer^.Length = 0 THEN
ALexer^.Length := ReadNBytes(ALexer^.Input, ChunkSize, ALexer^.Buffer); ALexer^.Length := ReadNBytes(ALexer^.Input, ChunkSize, ALexer^.Buffer);
@ -712,7 +784,8 @@ BEGIN
END; END;
ALexer^.Start := ALexer^.Current; ALexer^.Start := ALexer^.Current;
RETURN LexerCurrent(ALexer) Result := LexerCurrent(ALexer);
RETURN Result
END LexerLex; END LexerLex;
PROCEDURE LexerDestroy(ALexer: PLexer); PROCEDURE LexerDestroy(ALexer: PLexer);

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@ -92,13 +92,15 @@ BEGIN
WriteSemicolon() WriteSemicolon()
END TranspileConstant; END TranspileConstant;
PROCEDURE TranspileConstantPart(AContext: PTranspilerContext; ALexer: PLexer); PROCEDURE TranspileConstantPart(AContext: PTranspilerContext; ALexer: PLexer): BOOLEAN;
VAR VAR
Token: LexerToken; Token: LexerToken;
Result: BOOLEAN;
BEGIN BEGIN
Token := LexerCurrent(ALexer); Token := LexerCurrent(ALexer);
Result := Token.Kind = lexerKindConst;
IF Token.Kind = lexerKindConst THEN IF Result THEN
WriteString('CONST'); WriteString('CONST');
WriteLn(); WriteLn();
Token := TranspilerLex(ALexer); Token := TranspilerLex(ALexer);
@ -106,9 +108,9 @@ BEGIN
WHILE Token.Kind = lexerKindIdentifier DO WHILE Token.Kind = lexerKindIdentifier DO
TranspileConstant(AContext, ALexer); TranspileConstant(AContext, ALexer);
Token := TranspilerLex(ALexer) Token := TranspilerLex(ALexer)
END; END
WriteLn() END;
END RETURN Result
END TranspileConstantPart; END TranspileConstantPart;
PROCEDURE TranspileModule(AContext: PTranspilerContext; ALexer: PLexer); PROCEDURE TranspileModule(AContext: PTranspilerContext; ALexer: PLexer);
@ -120,8 +122,9 @@ BEGIN
IF Token.Kind = lexerKindDefinition THEN IF Token.Kind = lexerKindDefinition THEN
WriteString('DEFINITION '); WriteString('DEFINITION ');
Token := TranspilerLex(ALexer); Token := TranspilerLex(ALexer)
ELSIF Token.Kind = lexerKindImplementation THEN END;
IF Token.Kind = lexerKindImplementation THEN
WriteString('IMPLEMENTATION '); WriteString('IMPLEMENTATION ');
Token := TranspilerLex(ALexer) Token := TranspilerLex(ALexer)
END; END;
@ -138,9 +141,13 @@ BEGIN
(* Write the module body. *) (* Write the module body. *)
Token := TranspilerLex(ALexer); Token := TranspilerLex(ALexer);
TranspileImportPart(AContext, ALexer); TranspileImportPart(AContext, ALexer);
TranspileConstantPart(AContext, ALexer); IF TranspileConstantPart(AContext, ALexer) THEN
WriteLn()
END;
TranspileTypePart(AContext, ALexer); TranspileTypePart(AContext, ALexer);
TranspileVariablePart(AContext, ALexer); IF TranspileVariablePart(AContext, ALexer) THEN
WriteLn()
END;
TranspileProcedurePart(AContext, ALexer); TranspileProcedurePart(AContext, ALexer);
Token := LexerCurrent(ALexer); Token := LexerCurrent(ALexer);
@ -169,10 +176,9 @@ BEGIN
IF Token.Kind = lexerKindSemicolon THEN IF Token.Kind = lexerKindSemicolon THEN
Token := TranspilerLex(ALexer); Token := TranspilerLex(ALexer);
WriteSemicolon() Write(';')
ELSE END;
WriteLn() WriteLn()
END
END END
END TranspileTypeFields; END TranspileTypeFields;
@ -285,15 +291,20 @@ BEGIN
Token := TranspilerLex(ALexer); Token := TranspilerLex(ALexer);
IF Token.Kind = lexerKindRecord THEN IF Token.Kind = lexerKindRecord THEN
TranspileRecordType(AContext, ALexer) TranspileRecordType(AContext, ALexer)
ELSIF Token.Kind = lexerKindLeftParen THEN END;
IF Token.Kind = lexerKindLeftParen THEN
TranspileEnumerationType(AContext, ALexer) TranspileEnumerationType(AContext, ALexer)
ELSIF Token.Kind = lexerKindArray THEN END;
IF Token.Kind = lexerKindArray THEN
TranspileArrayType(AContext, ALexer) TranspileArrayType(AContext, ALexer)
ELSIF (Token.Kind = lexerKindPointer) OR (Token.Kind = lexerKindHat) THEN END;
IF (Token.Kind = lexerKindPointer) OR (Token.Kind = lexerKindHat) THEN
TranspilePointerType(AContext, ALexer) TranspilePointerType(AContext, ALexer)
ELSIF Token.Kind = lexerKindProc THEN END;
IF Token.Kind = lexerKindProc THEN
TranspileProcedureType(AContext, ALexer) TranspileProcedureType(AContext, ALexer)
ELSE END;
IF Token.Kind = lexerKindIdentifier THEN
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start) WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start)
END END
END TranspileTypeExpression; END TranspileTypeExpression;
@ -349,13 +360,15 @@ BEGIN
WriteSemicolon() WriteSemicolon()
END TranspileVariableDeclaration; END TranspileVariableDeclaration;
PROCEDURE TranspileVariablePart(AContext: PTranspilerContext; ALexer: PLexer); PROCEDURE TranspileVariablePart(AContext: PTranspilerContext; ALexer: PLexer): BOOLEAN;
VAR VAR
Token: LexerToken; Token: LexerToken;
Result: BOOLEAN;
BEGIN BEGIN
Token := LexerCurrent(ALexer); Token := LexerCurrent(ALexer);
Result := Token.Kind = lexerKindVar;
IF Token.Kind = lexerKindVar THEN IF Result THEN
WriteString('VAR'); WriteString('VAR');
WriteLn(); WriteLn();
Token := TranspilerLex(ALexer); Token := TranspilerLex(ALexer);
@ -363,12 +376,12 @@ BEGIN
WHILE Token.Kind = lexerKindIdentifier DO WHILE Token.Kind = lexerKindIdentifier DO
TranspileVariableDeclaration(AContext, ALexer); TranspileVariableDeclaration(AContext, ALexer);
Token := TranspilerLex(ALexer) Token := TranspilerLex(ALexer)
END; END
WriteLn() END;
END RETURN Result
END TranspileVariablePart; END TranspileVariablePart;
PROCEDURE TranspileProcedureDeclaration(AContext: PTranspilerContext; ALexer: PLexer); PROCEDURE TranspileProcedureHeading(AContext: PTranspilerContext; ALexer: PLexer);
VAR VAR
Token: LexerToken; Token: LexerToken;
WrittenBytes: CARDINAL; WrittenBytes: CARDINAL;
@ -388,8 +401,7 @@ BEGIN
Token := TranspilerLex(ALexer); Token := TranspilerLex(ALexer);
WriteString(': '); WriteString(': ');
Token := TranspilerLex(ALexer); TranspileTypeExpression(AContext, ALexer);
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Token := TranspilerLex(ALexer); Token := TranspilerLex(ALexer);
IF Token.Kind = lexerKindSemicolon THEN IF Token.Kind = lexerKindSemicolon THEN
@ -409,6 +421,188 @@ BEGIN
END; END;
Token := TranspilerLex(ALexer); Token := TranspilerLex(ALexer);
WriteSemicolon() WriteSemicolon()
END TranspileProcedureHeading;
PROCEDURE TranspileIfStatement(AContext: PTranspilerContext; ALexer: PLexer);
VAR
Token: LexerToken;
WrittenBytes: CARDINAL;
BEGIN
WriteString(' IF ');
Token := TranspilerLex(ALexer);
WHILE Token.Kind <> lexerKindThen DO
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Write(' ');
Token := TranspilerLex(ALexer)
END;
WriteString('THEN');
WriteLn();
TranspileStatements(AContext, ALexer);
WriteString(' END');
Token := TranspilerLex(ALexer)
END TranspileIfStatement;
PROCEDURE TranspileWhileStatement(AContext: PTranspilerContext; ALexer: PLexer);
VAR
Token: LexerToken;
WrittenBytes: CARDINAL;
BEGIN
WriteString(' WHILE ');
Token := TranspilerLex(ALexer);
WHILE Token.Kind <> lexerKindDo DO
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Write(' ');
Token := TranspilerLex(ALexer)
END;
WriteString('DO');
WriteLn();
TranspileStatements(AContext, ALexer);
WriteString(' END');
Token := TranspilerLex(ALexer)
END TranspileWhileStatement;
PROCEDURE TranspileAssignmentStatement(AContext: PTranspilerContext; ALexer: PLexer);
VAR
Token: LexerToken;
WrittenBytes: CARDINAL;
BEGIN
WriteString(' := ');
Token := TranspilerLex(ALexer);
WHILE (Token.Kind <> lexerKindSemicolon) AND (Token.Kind <> lexerKindEnd) DO
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Write(' ');
Token := TranspilerLex(ALexer)
END
END TranspileAssignmentStatement;
PROCEDURE TranspileCallStatement(AContext: PTranspilerContext; ALexer: PLexer);
VAR
Token: LexerToken;
WrittenBytes: CARDINAL;
BEGIN
WriteString('(');
Token := TranspilerLex(ALexer);
WHILE (Token.Kind <> lexerKindSemicolon) AND (Token.Kind <> lexerKindEnd) DO
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Token := TranspilerLex(ALexer)
END
END TranspileCallStatement;
PROCEDURE TranspileReturnStatement(AContext: PTranspilerContext; ALexer: PLexer);
VAR
Token: LexerToken;
WrittenBytes: CARDINAL;
BEGIN
WriteString(' RETURN ');
Token := TranspilerLex(ALexer);
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Token := TranspilerLex(ALexer)
END TranspileReturnStatement;
PROCEDURE TranspileStatement(AContext: PTranspilerContext; ALexer: PLexer);
VAR
Token: LexerToken;
WrittenBytes: CARDINAL;
BEGIN
Token := TranspilerLex(ALexer);
IF Token.Kind = lexerKindIf THEN
TranspileIfStatement(AContext, ALexer)
END;
IF Token.Kind = lexerKindWhile THEN
TranspileWhileStatement(AContext, ALexer)
END;
IF Token.Kind = lexerKindReturn THEN
TranspileReturnStatement(AContext, ALexer)
END;
IF Token.Kind = lexerKindIdentifier THEN
WriteString(' ');
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Token := TranspilerLex(ALexer);
WHILE Token.Kind = lexerKindLeftSquare DO
Write('[');
Token := TranspilerLex(ALexer);
WHILE Token.Kind <> lexerKindRightSquare DO
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Token := TranspilerLex(ALexer)
END;
Write(']');
Token := TranspilerLex(ALexer);
END;
IF Token.Kind = lexerKindHat THEN
Write('^');
Token := TranspilerLex(ALexer)
END;
IF Token.Kind = lexerKindDot THEN
Write('.');
Token := TranspilerLex(ALexer);
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Token := TranspilerLex(ALexer);
END;
IF Token.Kind = lexerKindHat THEN
Write('^');
Token := TranspilerLex(ALexer)
END;
IF Token.Kind = lexerKindAssignment THEN
TranspileAssignmentStatement(AContext, ALexer)
END;
IF Token.Kind = lexerKindLeftParen THEN
TranspileCallStatement(AContext, ALexer)
END
END
END TranspileStatement;
PROCEDURE TranspileStatements(AContext: PTranspilerContext; ALexer: PLexer);
VAR
Token: LexerToken;
BEGIN
Token := LexerCurrent(ALexer);
WHILE Token.Kind <> lexerKindEnd DO
TranspileStatement(AContext, ALexer);
Token := LexerCurrent(ALexer);
IF Token.Kind = lexerKindSemicolon THEN
Write(';')
END;
WriteLn()
END
END TranspileStatements;
PROCEDURE TranspileStatementPart(AContext: PTranspilerContext; ALexer: PLexer);
VAR
Token: LexerToken;
BEGIN
Token := LexerCurrent(ALexer);
IF Token.Kind = lexerKindBegin THEN
WriteString('BEGIN');
WriteLn();
TranspileStatements(AContext, ALexer)
END
END TranspileStatementPart;
PROCEDURE TranspileProcedureDeclaration(AContext: PTranspilerContext; ALexer: PLexer);
VAR
Token: LexerToken;
SeenPart: BOOLEAN;
WrittenBytes: CARDINAL;
BEGIN
TranspileProcedureHeading(AContext, ALexer);
SeenPart := TranspileConstantPart(AContext, ALexer);
SeenPart := TranspileVariablePart(AContext, ALexer);
TranspileStatementPart(AContext, ALexer);
WriteString('END ');
Token := TranspilerLex(ALexer);
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Token := TranspilerLex(ALexer);
WriteSemicolon();
Token := TranspilerLex(ALexer)
END TranspileProcedureDeclaration; END TranspileProcedureDeclaration;
PROCEDURE TranspileProcedurePart(AContext: PTranspilerContext; ALexer: PLexer); PROCEDURE TranspileProcedurePart(AContext: PTranspilerContext; ALexer: PLexer);
@ -417,8 +611,10 @@ VAR
BEGIN BEGIN
Token := LexerCurrent(ALexer); Token := LexerCurrent(ALexer);
IF Token.Kind = lexerKindProc THEN WHILE Token.Kind = lexerKindProc DO
TranspileProcedureDeclaration(AContext, ALexer) TranspileProcedureDeclaration(AContext, ALexer);
Token := LexerCurrent(ALexer);
WriteLn()
END END
END TranspileProcedurePart; END TranspileProcedurePart;