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Shorten the array syntax

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This commit is contained in:
Eugen Wissner
2025-05-30 12:57:04 +02:00
parent bd41736697
commit 4eccc147ba
4 changed files with 677 additions and 655 deletions
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12
Rakefile
View File

@ -104,16 +104,20 @@ task :backport do
source
.gsub(/^(var|type|const|begin)/) { |match| match.upcase }
.gsub(/^[[:alnum:]]* ?module/) { |match| match.upcase }
.gsub(/\brecord\b/) { |match| match.upcase }
.gsub(/proc(\(| )/, 'PROCEDURE\1')
.gsub(/\b(record|nil|or)\b/) { |match| match.upcase }
.gsub(/proc\(/, 'PROCEDURE(')
.gsub(/ & /, ' AND ')
.gsub(/([[:space:]]*)end(;?)$/, '\1END\2')
.gsub(/^([[:space:]]*)(while|return|if)\b/) { |match| match.upcase }
.gsub(/^from ([[:alnum:]]+) import/, 'FROM \1 IMPORT')
.gsub(/ \^([[:alnum:]])/, ' POINTER TO \1')
.gsub(/(then|do)$/) { |match| match.upcase }
.gsub(/(:|=) \[([[:digit:]]+)\]/, '\1 ARRAY[1..\2] OF ')
.each_line do |line|
if line.start_with? 'PROCEDURE'
current_procedure = line[10...line.index('(')]
if line.start_with? 'proc'
current_procedure = line[5...line.index('(')]
line = 'PROCEDURE ' + line[5..].gsub(',', ';')
elsif line.start_with?('END;') && !current_procedure.nil?
line = "END #{current_procedure};"
current_proceure = nil

8
source/Compiler.elna
View File

@ -7,12 +7,12 @@ from Lexer import Lexer, lexer_destroy, lexer_initialize;
from Transpiler import transpile;
var
ALexer: Lexer;
lexer: Lexer;
begin
lexer_initialize(ADR(ALexer), StdIn);
lexer_initialize(ADR(lexer), StdIn);
transpile(ADR(ALexer));
transpile(ADR(lexer));
lexer_destroy(ADR(ALexer))
lexer_destroy(ADR(lexer))
end Compiler.

767
source/Lexer.elna
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File diff suppressed because it is too large Load Diff

545
source/Transpiler.elna
View File

@ -13,17 +13,17 @@ type
end;
(* Calls lexer_lex() but skips the comments. *)
proc transpiler_lex(ALexer: PLexer): LexerToken;
proc transpiler_lex(lexer: PLexer): LexerToken;
var
Result: LexerToken;
result: LexerToken;
begin
Result := lexer_lex(ALexer);
result := lexer_lex(lexer);
while Result.Kind = lexerKindComment do
Result := lexer_lex(ALexer)
while result.Kind = lexerKindComment do
result := lexer_lex(lexer)
end;
return Result
return result
end;
(* Write a semicolon followed by a newline. *)
@ -33,552 +33,569 @@ begin
WriteLn()
end;
proc transpile_import(AContext: PTranspilerContext; ALexer: PLexer);
proc transpile_import(context: PTranspilerContext, lexer: PLexer);
var
Token: LexerToken;
WrittenBytes: CARDINAL;
token: LexerToken;
written_bytes: CARDINAL;
begin
WriteString('FROM ');
Token := transpiler_lex(ALexer);
token := transpiler_lex(lexer);
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
written_bytes := WriteNBytes(StdOut, ADDRESS(lexer^.Current - lexer^.Start), lexer^.Start);
Token := transpiler_lex(ALexer);
token := transpiler_lex(lexer);
WriteString(' IMPORT ');
Token := transpiler_lex(ALexer);
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
token := transpiler_lex(lexer);
written_bytes := WriteNBytes(StdOut, ADDRESS(lexer^.Current - lexer^.Start), lexer^.Start);
Token := transpiler_lex(ALexer);
while Token.Kind <> lexerKindSemicolon do
token := transpiler_lex(lexer);
while token.Kind <> lexerKindSemicolon do
WriteString(', ');
Token := transpiler_lex(ALexer);
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Token := transpiler_lex(ALexer)
token := transpiler_lex(lexer);
written_bytes := WriteNBytes(StdOut, ADDRESS(lexer^.Current - lexer^.Start), lexer^.Start);
token := transpiler_lex(lexer)
end;
write_semicolon();
Token := transpiler_lex(ALexer)
token := transpiler_lex(lexer)
end;
proc transpile_import_part(AContext: PTranspilerContext; ALexer: PLexer);
proc transpile_import_part(context: PTranspilerContext, lexer: PLexer);
var
Token: LexerToken;
token: LexerToken;
begin
Token := lexer_current(ALexer);
token := lexer_current(lexer);
while Token.Kind = lexerKindFrom do
transpile_import(AContext, ALexer);
Token := lexer_current(ALexer)
while token.Kind = lexerKindFrom do
transpile_import(context, lexer);
token := lexer_current(lexer)
end;
WriteLn()
end;
proc transpile_constant(AContext: PTranspilerContext; ALexer: PLexer);
proc transpile_constant(context: PTranspilerContext, lexer: PLexer);
var
Token: LexerToken;
WrittenBytes: CARDINAL;
written_bytes: CARDINAL;
begin
WriteString(' ');
Token := lexer_current(ALexer);
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Token := lexer_current(lexer);
written_bytes := WriteNBytes(StdOut, ADDRESS(lexer^.Current - lexer^.Start), lexer^.Start);
Token := transpiler_lex(ALexer);
Token := transpiler_lex(lexer);
WriteString(' = ');
Token := transpiler_lex(ALexer);
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Token := transpiler_lex(lexer);
written_bytes := WriteNBytes(StdOut, ADDRESS(lexer^.Current - lexer^.Start), lexer^.Start);
Token := transpiler_lex(ALexer);
Token := transpiler_lex(lexer);
write_semicolon()
end;
proc transpile_constant_part(AContext: PTranspilerContext; ALexer: PLexer): BOOLEAN;
proc transpile_constant_part(context: PTranspilerContext, lexer: PLexer): BOOLEAN;
var
Token: LexerToken;
Result: BOOLEAN;
result: BOOLEAN;
begin
Token := lexer_current(ALexer);
Result := Token.Kind = lexerKindConst;
Token := lexer_current(lexer);
result := Token.Kind = lexerKindConst;
if Result then
if result then
WriteString('CONST');
WriteLn();
Token := transpiler_lex(ALexer);
Token := transpiler_lex(lexer);
while Token.Kind = lexerKindIdentifier do
transpile_constant(AContext, ALexer);
Token := transpiler_lex(ALexer)
transpile_constant(context, lexer);
Token := transpiler_lex(lexer)
end
end;
return Result
return result
end;
proc transpile_module(AContext: PTranspilerContext; ALexer: PLexer);
proc transpile_module(context: PTranspilerContext, lexer: PLexer);
var
Token: LexerToken;
WrittenBytes: CARDINAL;
written_bytes: CARDINAL;
begin
Token := transpiler_lex(ALexer);
Token := transpiler_lex(lexer);
if Token.Kind = lexerKindDefinition then
WriteString('DEFINITION ');
Token := transpiler_lex(ALexer)
Token := transpiler_lex(lexer)
end;
if Token.Kind = lexerKindImplementation then
WriteString('IMPLEMENTATION ');
Token := transpiler_lex(ALexer)
Token := transpiler_lex(lexer)
end;
WriteString('MODULE ');
(* Write the module name and end the line with a semicolon and newline. *)
Token := transpiler_lex(ALexer);
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Token := transpiler_lex(lexer);
written_bytes := WriteNBytes(StdOut, ADDRESS(lexer^.Current - lexer^.Start), lexer^.Start);
Token := transpiler_lex(ALexer);
Token := transpiler_lex(lexer);
write_semicolon();
WriteLn();
(* Write the module body. *)
Token := transpiler_lex(ALexer);
transpile_import_part(AContext, ALexer);
if transpile_constant_part(AContext, ALexer) then
Token := transpiler_lex(lexer);
transpile_import_part(context, lexer);
if transpile_constant_part(context, lexer) then
WriteLn()
end;
transpile_type_part(AContext, ALexer);
if transpile_variable_part(AContext, ALexer) then
transpile_type_part(context, lexer);
if transpile_variable_part(context, lexer) then
WriteLn()
end;
transpile_procedure_part(AContext, ALexer);
transpile_statement_part(AContext, ALexer);
transpile_procedure_part(context, lexer);
transpile_statement_part(context, lexer);
WriteString('END ');
Token := transpiler_lex(ALexer);
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Token := transpiler_lex(lexer);
written_bytes := WriteNBytes(StdOut, ADDRESS(lexer^.Current - lexer^.Start), lexer^.Start);
Token := transpiler_lex(ALexer);
Token := transpiler_lex(lexer);
Write('.');
Token := transpiler_lex(ALexer);
Token := transpiler_lex(lexer);
WriteLn()
end;
proc transpile_type_fields(AContext: PTranspilerContext; ALexer: PLexer);
proc transpile_type_fields(context: PTranspilerContext, lexer: PLexer);
var
Token: LexerToken;
WrittenBytes: CARDINAL;
written_bytes: CARDINAL;
begin
Token := transpiler_lex(ALexer);
Token := transpiler_lex(lexer);
while Token.Kind <> lexerKindEnd do
WriteString(' ');
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Token := transpiler_lex(ALexer);
written_bytes := WriteNBytes(StdOut, ADDRESS(lexer^.Current - lexer^.Start), lexer^.Start);
Token := transpiler_lex(lexer);
WriteString(': ');
transpile_type_expression(AContext, ALexer);
Token := transpiler_lex(ALexer);
transpile_type_expression(context, lexer);
Token := transpiler_lex(lexer);
if Token.Kind = lexerKindSemicolon then
Token := transpiler_lex(ALexer);
Token := transpiler_lex(lexer);
Write(';')
end;
WriteLn()
end
end;
proc transpile_record_type(AContext: PTranspilerContext; ALexer: PLexer);
proc transpile_record_type(context: PTranspilerContext, lexer: PLexer);
var
Token: LexerToken;
begin
WriteString('RECORD');
WriteLn();
transpile_type_fields(AContext, ALexer);
transpile_type_fields(context, lexer);
WriteString(' END')
end;
proc transpile_pointer_type(AContext: PTranspilerContext; ALexer: PLexer);
proc transpile_pointer_type(context: PTranspilerContext, lexer: PLexer);
var
Token: LexerToken;
WrittenBytes: CARDINAL;
written_bytes: CARDINAL;
begin
Token := lexer_current(ALexer);
Token := lexer_current(lexer);
WriteString('POINTER TO ');
if Token.Kind = lexerKindPointer then
Token := transpiler_lex(ALexer)
Token := transpiler_lex(lexer)
end;
transpile_type_expression(AContext, ALexer)
transpile_type_expression(context, lexer)
end;
proc transpile_array_type(AContext: PTranspilerContext; ALexer: PLexer);
proc transpile_array_type(context: PTranspilerContext, lexer: PLexer);
var
Token: LexerToken;
WrittenBytes: CARDINAL;
written_bytes: CARDINAL;
begin
WriteString('ARRAY');
Token := transpiler_lex(ALexer);
Token := lexer_current(lexer);
if Token.Kind = lexerKindArray then
Token := transpiler_lex(lexer)
end;
if Token.Kind <> lexerKindOf then
Write('[');
Token := transpiler_lex(ALexer);
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Token := transpiler_lex(ALexer);
WriteString('..');
Token := transpiler_lex(ALexer);
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Token := transpiler_lex(ALexer);
Write(']');
Token := transpiler_lex(ALexer)
WriteString('[1..');
Token := transpiler_lex(lexer);
written_bytes := WriteNBytes(StdOut, ADDRESS(lexer^.Current - lexer^.Start), lexer^.Start);
Token := transpiler_lex(lexer);
Write(']')
end;
WriteString(' OF ');
transpile_type_expression(AContext, ALexer)
transpile_type_expression(context, lexer)
end;
proc transpile_enumeration_type(AContext: PTranspilerContext; ALexer: PLexer);
proc transpile_enumeration_type(context: PTranspilerContext, lexer: PLexer);
var
Token: LexerToken;
WrittenBytes: CARDINAL;
written_bytes: CARDINAL;
begin
WriteString('(');
WriteLn();
WriteString(' ');
Token := transpiler_lex(ALexer);
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Token := transpiler_lex(lexer);
written_bytes := WriteNBytes(StdOut, ADDRESS(lexer^.Current - lexer^.Start), lexer^.Start);
Token := transpiler_lex(ALexer);
Token := transpiler_lex(lexer);
while Token.Kind = lexerKindComma do
Write(',');
WriteLn();
WriteString(' ');
Token := transpiler_lex(ALexer);
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Token := transpiler_lex(lexer);
written_bytes := WriteNBytes(StdOut, ADDRESS(lexer^.Current - lexer^.Start), lexer^.Start);
Token := transpiler_lex(ALexer)
Token := transpiler_lex(lexer)
end;
WriteLn();
WriteString(' )')
end;
proc transpile_union_type(AContext: PTranspilerContext; ALexer: PLexer);
proc transpile_union_type(context: PTranspilerContext, lexer: PLexer);
var
Token: LexerToken;
end;
proc transpile_procedure_type(AContext: PTranspilerContext; ALexer: PLexer);
proc transpile_procedure_type(context: PTranspilerContext, lexer: PLexer);
var
Token: LexerToken;
WrittenBytes: CARDINAL;
written_bytes: CARDINAL;
begin
Token := transpiler_lex(ALexer);
Token := transpiler_lex(lexer);
WriteString('PROCEDURE(');
Token := transpiler_lex(ALexer);
Token := transpiler_lex(lexer);
while Token.Kind <> lexerKindRightParen do
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
written_bytes := WriteNBytes(StdOut, ADDRESS(lexer^.Current - lexer^.Start), lexer^.Start);
Token := transpiler_lex(ALexer);
Token := transpiler_lex(lexer);
if Token.Kind = lexerKindComma then
Token := transpiler_lex(ALexer);
Token := transpiler_lex(lexer);
WriteString(', ')
end
end;
Write(')')
end;
proc transpile_type_expression(AContext: PTranspilerContext; ALexer: PLexer);
proc transpile_type_expression(context: PTranspilerContext, lexer: PLexer);
var
Token: LexerToken;
WrittenBytes: CARDINAL;
written_bytes: CARDINAL;
begin
Token := transpiler_lex(ALexer);
Token := transpiler_lex(lexer);
if Token.Kind = lexerKindRecord then
transpile_record_type(AContext, ALexer)
transpile_record_type(context, lexer)
end;
if Token.Kind = lexerKindLeftParen then
transpile_enumeration_type(AContext, ALexer)
transpile_enumeration_type(context, lexer)
end;
if Token.Kind = lexerKindArray then
transpile_array_type(AContext, ALexer)
if (Token.Kind = lexerKindArray) or (Token.Kind = lexerKindLeftSquare) then
transpile_array_type(context, lexer)
end;
if (Token.Kind = lexerKindPointer) OR (Token.Kind = lexerKindHat) then
transpile_pointer_type(AContext, ALexer)
if Token.Kind = lexerKindHat then
transpile_pointer_type(context, lexer)
end;
if Token.Kind = lexerKindProc then
transpile_procedure_type(AContext, ALexer)
transpile_procedure_type(context, lexer)
end;
if Token.Kind = lexerKindIdentifier then
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start)
written_bytes := WriteNBytes(StdOut, ADDRESS(lexer^.Current - lexer^.Start), lexer^.Start)
end
end;
proc transpile_type_declaration(AContext: PTranspilerContext; ALexer: PLexer);
proc transpile_type_declaration(context: PTranspilerContext, lexer: PLexer);
var
Token: LexerToken;
WrittenBytes: CARDINAL;
written_bytes: CARDINAL;
begin
WriteString(' ');
Token := lexer_current(ALexer);
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Token := lexer_current(lexer);
written_bytes := WriteNBytes(StdOut, ADDRESS(lexer^.Current - lexer^.Start), lexer^.Start);
Token := transpiler_lex(ALexer);
Token := transpiler_lex(lexer);
WriteString(' = ');
transpile_type_expression(AContext, ALexer);
Token := transpiler_lex(ALexer);
transpile_type_expression(context, lexer);
Token := transpiler_lex(lexer);
write_semicolon();
end;
proc transpile_type_part(AContext: PTranspilerContext; ALexer: PLexer);
proc transpile_type_part(context: PTranspilerContext, lexer: PLexer);
var
Token: LexerToken;
token: LexerToken;
begin
Token := lexer_current(ALexer);
token := lexer_current(lexer);
if Token.Kind = lexerKindType then
if token.Kind = lexerKindType then
WriteString('TYPE');
WriteLn();
Token := transpiler_lex(ALexer);
token := transpiler_lex(lexer);
while Token.Kind = lexerKindIdentifier do
transpile_type_declaration(AContext, ALexer);
Token := transpiler_lex(ALexer)
while token.Kind = lexerKindIdentifier do
transpile_type_declaration(context, lexer);
token := transpiler_lex(lexer)
end;
WriteLn()
end
end;
proc transpile_variable_declaration(AContext: PTranspilerContext; ALexer: PLexer);
proc transpile_variable_declaration(context: PTranspilerContext, lexer: PLexer);
var
Token: LexerToken;
WrittenBytes: CARDINAL;
written_bytes: CARDINAL;
begin
WriteString(' ');
Token := lexer_current(ALexer);
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Token := lexer_current(lexer);
written_bytes := WriteNBytes(StdOut, ADDRESS(lexer^.Current - lexer^.Start), lexer^.Start);
Token := transpiler_lex(ALexer);
Token := transpiler_lex(lexer);
WriteString(': ');
transpile_type_expression(AContext, ALexer);
Token := transpiler_lex(ALexer);
transpile_type_expression(context, lexer);
Token := transpiler_lex(lexer);
write_semicolon()
end;
proc transpile_variable_part(AContext: PTranspilerContext; ALexer: PLexer): BOOLEAN;
proc transpile_variable_part(context: PTranspilerContext, lexer: PLexer): BOOLEAN;
var
Token: LexerToken;
Result: BOOLEAN;
result: BOOLEAN;
begin
Token := lexer_current(ALexer);
Result := Token.Kind = lexerKindVar;
Token := lexer_current(lexer);
result := Token.Kind = lexerKindVar;
if Result then
if result then
WriteString('VAR');
WriteLn();
Token := transpiler_lex(ALexer);
Token := transpiler_lex(lexer);
while Token.Kind = lexerKindIdentifier do
transpile_variable_declaration(AContext, ALexer);
Token := transpiler_lex(ALexer)
transpile_variable_declaration(context, lexer);
Token := transpiler_lex(lexer)
end
end;
return Result
return result
end;
proc transpile_procedure_heading(AContext: PTranspilerContext; ALexer: PLexer): LexerToken;
proc transpile_procedure_heading(context: PTranspilerContext, lexer: PLexer): LexerToken;
var
Token: LexerToken;
Result: LexerToken;
WrittenBytes: CARDINAL;
token: LexerToken;
result: LexerToken;
written_bytes: CARDINAL;
begin
WriteString('PROCEDURE ');
Result := transpiler_lex(ALexer);
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
result := transpiler_lex(lexer);
written_bytes := WriteNBytes(StdOut, ADDRESS(lexer^.Current - lexer^.Start), lexer^.Start);
Token := transpiler_lex(ALexer);
token := transpiler_lex(lexer);
Write('(');
Token := transpiler_lex(ALexer);
while Token.Kind <> lexerKindRightParen do
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
token := transpiler_lex(lexer);
while token.Kind <> lexerKindRightParen do
written_bytes := WriteNBytes(StdOut, ADDRESS(lexer^.Current - lexer^.Start), lexer^.Start);
Token := transpiler_lex(ALexer);
token := transpiler_lex(lexer);
WriteString(': ');
transpile_type_expression(AContext, ALexer);
transpile_type_expression(context, lexer);
Token := transpiler_lex(ALexer);
if Token.Kind = lexerKindSemicolon then
token := transpiler_lex(lexer);
if (token.Kind = lexerKindSemicolon) or (token.Kind = lexerKindComma) then
WriteString('; ');
Token := transpiler_lex(ALexer)
token := transpiler_lex(lexer)
end
end;
WriteString(')');
Token := transpiler_lex(ALexer);
token := transpiler_lex(lexer);
(* Check for the return type and write it. *)
if Token.Kind = lexerKindColon then
if token.Kind = lexerKindColon then
WriteString(': ');
Token := transpiler_lex(ALexer);
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Token := transpiler_lex(ALexer)
token := transpiler_lex(lexer);
written_bytes := WriteNBytes(StdOut, ADDRESS(lexer^.Current - lexer^.Start), lexer^.Start);
token := transpiler_lex(lexer)
end;
Token := transpiler_lex(ALexer);
token := transpiler_lex(lexer);
write_semicolon();
return Result
return result
end;
proc transpile_expression(AContext: PTranspilerContext; ALexer: PLexer; TrailingToken: LexerKind);
proc transpile_expression(context: PTranspilerContext, lexer: PLexer, TrailingToken: LexerKind);
var
Token: LexerToken;
WrittenBytes: CARDINAL;
token: LexerToken;
written_bytes: CARDINAL;
begin
Token := transpiler_lex(ALexer);
token := transpiler_lex(lexer);
while (Token.Kind <> TrailingToken) AND (Token.Kind <> lexerKindEnd) do
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Write(' ');
Token := transpiler_lex(ALexer)
while (token.Kind <> TrailingToken) & (token.Kind <> lexerKindEnd) do
written_bytes := 0;
if token.Kind = lexerKindNull then
WriteString('NIL ');
written_bytes := 1
end;
if token.Kind = lexerKindOr then
WriteString('OR ');
written_bytes := 1
end;
if token.Kind = lexerKindAnd then
WriteString('AND ');
written_bytes := 1
end;
if token.Kind = lexerKindNot then
WriteString('NOT ');
written_bytes := 1
end;
if written_bytes = 0 then
written_bytes := WriteNBytes(StdOut, ADDRESS(lexer^.Current - lexer^.Start), lexer^.Start);
Write(' ')
end;
token := transpiler_lex(lexer)
end
end;
proc transpile_if_statement(AContext: PTranspilerContext; ALexer: PLexer);
proc transpile_if_statement(context: PTranspilerContext, lexer: PLexer);
var
Token: LexerToken;
WrittenBytes: CARDINAL;
token: LexerToken;
written_bytes: CARDINAL;
begin
WriteString(' IF ');
transpile_expression(AContext, ALexer, lexerKindThen);
transpile_expression(context, lexer, lexerKindThen);
WriteString('THEN');
WriteLn();
transpile_statements(AContext, ALexer);
transpile_statements(context, lexer);
WriteString(' END');
Token := transpiler_lex(ALexer)
token := transpiler_lex(lexer)
end;
proc transpile_while_statement(AContext: PTranspilerContext; ALexer: PLexer);
proc transpile_while_statement(context: PTranspilerContext, lexer: PLexer);
var
Token: LexerToken;
WrittenBytes: CARDINAL;
written_bytes: CARDINAL;
begin
WriteString(' WHILE ');
transpile_expression(AContext, ALexer, lexerKindDo);
transpile_expression(context, lexer, lexerKindDo);
WriteString('DO');
WriteLn();
transpile_statements(AContext, ALexer);
transpile_statements(context, lexer);
WriteString(' END');
Token := transpiler_lex(ALexer)
Token := transpiler_lex(lexer)
end;
proc transpile_assignment_statement(AContext: PTranspilerContext; ALexer: PLexer);
proc transpile_assignment_statement(context: PTranspilerContext, lexer: PLexer);
begin
WriteString(' := ');
transpile_expression(AContext, ALexer, lexerKindSemicolon);
transpile_expression(context, lexer, lexerKindSemicolon);
end;
proc transpile_call_statement(AContext: PTranspilerContext; ALexer: PLexer);
proc transpile_call_statement(context: PTranspilerContext, lexer: PLexer);
var
Token: LexerToken;
WrittenBytes: CARDINAL;
written_bytes: CARDINAL;
begin
WriteString('(');
Token := transpiler_lex(ALexer);
Token := transpiler_lex(lexer);
while (Token.Kind <> lexerKindSemicolon) AND (Token.Kind <> lexerKindEnd) do
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Token := transpiler_lex(ALexer)
while (Token.Kind <> lexerKindSemicolon) & (Token.Kind <> lexerKindEnd) do
written_bytes := WriteNBytes(StdOut, ADDRESS(lexer^.Current - lexer^.Start), lexer^.Start);
Token := transpiler_lex(lexer)
end
end;
proc transpile_return_statement(AContext: PTranspilerContext; ALexer: PLexer);
proc transpile_return_statement(context: PTranspilerContext, lexer: PLexer);
var
Token: LexerToken;
WrittenBytes: CARDINAL;
written_bytes: CARDINAL;
begin
WriteString(' RETURN ');
Token := transpiler_lex(ALexer);
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Token := transpiler_lex(ALexer)
Token := transpiler_lex(lexer);
written_bytes := WriteNBytes(StdOut, ADDRESS(lexer^.Current - lexer^.Start), lexer^.Start);
Token := transpiler_lex(lexer)
end;
proc transpile_statement(AContext: PTranspilerContext; ALexer: PLexer);
proc transpile_statement(context: PTranspilerContext, lexer: PLexer);
var
Token: LexerToken;
WrittenBytes: CARDINAL;
token: LexerToken;
written_bytes: CARDINAL;
begin
Token := transpiler_lex(ALexer);
token := transpiler_lex(lexer);
if Token.Kind = lexerKindIf then
transpile_if_statement(AContext, ALexer)
if token.Kind = lexerKindIf then
transpile_if_statement(context, lexer)
end;
if Token.Kind = lexerKindWhile then
transpile_while_statement(AContext, ALexer)
if token.Kind = lexerKindWhile then
transpile_while_statement(context, lexer)
end;
if Token.Kind = lexerKindReturn then
transpile_return_statement(AContext, ALexer)
if token.Kind = lexerKindReturn then
transpile_return_statement(context, lexer)
end;
if Token.Kind = lexerKindIdentifier then
if token.Kind = lexerKindIdentifier then
WriteString(' ');
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Token := transpiler_lex(ALexer);
written_bytes := WriteNBytes(StdOut, ADDRESS(lexer^.Current - lexer^.Start), lexer^.Start);
token := transpiler_lex(lexer);
while Token.Kind = lexerKindLeftSquare do
while token.Kind = lexerKindLeftSquare do
Write('[');
Token := transpiler_lex(ALexer);
while Token.Kind <> lexerKindRightSquare do
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Token := transpiler_lex(ALexer)
token := transpiler_lex(lexer);
while token.Kind <> lexerKindRightSquare do
written_bytes := WriteNBytes(StdOut, ADDRESS(lexer^.Current - lexer^.Start), lexer^.Start);
token := transpiler_lex(lexer)
end;
Write(']');
Token := transpiler_lex(ALexer);
token := transpiler_lex(lexer);
end;
if Token.Kind = lexerKindHat then
if token.Kind = lexerKindHat then
Write('^');
Token := transpiler_lex(ALexer)
token := transpiler_lex(lexer)
end;
if Token.Kind = lexerKindDot then
if token.Kind = lexerKindDot then
Write('.');
Token := transpiler_lex(ALexer);
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Token := transpiler_lex(ALexer);
token := transpiler_lex(lexer);
written_bytes := WriteNBytes(StdOut, ADDRESS(lexer^.Current - lexer^.Start), lexer^.Start);
token := transpiler_lex(lexer);
end;
if Token.Kind = lexerKindHat then
if token.Kind = lexerKindHat then
Write('^');
Token := transpiler_lex(ALexer)
token := transpiler_lex(lexer)
end;
while Token.Kind = lexerKindLeftSquare do
while token.Kind = lexerKindLeftSquare do
Write('[');
Token := transpiler_lex(ALexer);
while Token.Kind <> lexerKindRightSquare do
WrittenBytes := WriteNBytes(StdOut, ADDRESS(ALexer^.Current - ALexer^.Start), ALexer^.Start);
Token := transpiler_lex(ALexer)
token := transpiler_lex(lexer);
while token.Kind <> lexerKindRightSquare do
written_bytes := WriteNBytes(StdOut, ADDRESS(lexer^.Current - lexer^.Start), lexer^.Start);
token := transpiler_lex(lexer)
end;
Write(']');
Token := transpiler_lex(ALexer);
token := transpiler_lex(lexer);
end;
if Token.Kind = lexerKindAssignment then
transpile_assignment_statement(AContext, ALexer)
if token.Kind = lexerKindAssignment then
transpile_assignment_statement(context, lexer)
end;
if Token.Kind = lexerKindLeftParen then
transpile_call_statement(AContext, ALexer)
if token.Kind = lexerKindLeftParen then
transpile_call_statement(context, lexer)
end
end
end;
proc transpile_statements(AContext: PTranspilerContext; ALexer: PLexer);
proc transpile_statements(context: PTranspilerContext, lexer: PLexer);
var
Token: LexerToken;
begin
Token := lexer_current(ALexer);
Token := lexer_current(lexer);
while Token.Kind <> lexerKindEnd do
transpile_statement(AContext, ALexer);
Token := lexer_current(ALexer);
transpile_statement(context, lexer);
Token := lexer_current(lexer);
if Token.Kind = lexerKindSemicolon then
Write(';')
@ -587,57 +604,57 @@ begin
end
end;
proc transpile_statement_part(AContext: PTranspilerContext; ALexer: PLexer);
proc transpile_statement_part(context: PTranspilerContext, lexer: PLexer);
var
Token: LexerToken;
begin
Token := lexer_current(ALexer);
Token := lexer_current(lexer);
if Token.Kind = lexerKindBegin then
WriteString('BEGIN');
WriteLn();
transpile_statements(AContext, ALexer)
transpile_statements(context, lexer)
end
end;
proc transpile_procedure_declaration(AContext: PTranspilerContext; ALexer: PLexer);
proc transpile_procedure_declaration(context: PTranspilerContext, lexer: PLexer);
var
Token: LexerToken;
SeenPart: BOOLEAN;
WrittenBytes: CARDINAL;
seen_part: BOOLEAN;
written_bytes: CARDINAL;
begin
Token := transpile_procedure_heading(AContext, ALexer);
SeenPart := transpile_constant_part(AContext, ALexer);
SeenPart := transpile_variable_part(AContext, ALexer);
transpile_statement_part(AContext, ALexer);
Token := transpile_procedure_heading(context, lexer);
seen_part := transpile_constant_part(context, lexer);
seen_part := transpile_variable_part(context, lexer);
transpile_statement_part(context, lexer);
WriteString('END ');
WrittenBytes := WriteNBytes(StdOut, ORD(Token.identifierKind[1]), ADR(Token.identifierKind[2]));
written_bytes := WriteNBytes(StdOut, ORD(Token.identifierKind[1]), ADR(Token.identifierKind[2]));
Token := transpiler_lex(ALexer);
Token := transpiler_lex(lexer);
write_semicolon();
Token := transpiler_lex(ALexer)
Token := transpiler_lex(lexer)
end;
proc transpile_procedure_part(AContext: PTranspilerContext; ALexer: PLexer);
proc transpile_procedure_part(context: PTranspilerContext, lexer: PLexer);
var
Token: LexerToken;
begin
Token := lexer_current(ALexer);
Token := lexer_current(lexer);
while Token.Kind = lexerKindProc do
transpile_procedure_declaration(AContext, ALexer);
Token := lexer_current(ALexer);
transpile_procedure_declaration(context, lexer);
Token := lexer_current(lexer);
WriteLn()
end
end;
proc transpile(ALexer: PLexer);
proc transpile(lexer: PLexer);
var
Token: LexerToken;
WrittenBytes: CARDINAL;
written_bytes: CARDINAL;
Context: TranspilerContext;
begin
transpile_module(ADR(Context), ALexer)
transpile_module(ADR(Context), lexer)
end;
end Transpiler.