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Implement .max and .min type properties

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This commit is contained in:
Eugen Wissner
2025-02-16 07:53:31 +01:00
parent b358f8ba27
commit 994b91e0e5
5 changed files with 290 additions and 277 deletions
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12
boot/lexer.ll
View File

@ -89,12 +89,6 @@ const {
var {
return yy::parser::make_VAR(this->location);
}
array {
return yy::parser::make_ARRAY(this->location);
}
of {
return yy::parser::make_OF(this->location);
}
type {
return yy::parser::make_TYPE(this->location);
}
@ -104,12 +98,6 @@ record {
union {
return yy::parser::make_UNION(this->location);
}
pointer {
return yy::parser::make_POINTER(this->location);
}
to {
return yy::parser::make_TO(this->location);
}
true {
return yy::parser::make_BOOLEAN(true, this->location);
}

25
boot/parser.yy
View File

@ -82,7 +82,7 @@ along with GCC; see the file COPYING3. If not see
%token <std::string> STRING "string"
%token <bool> BOOLEAN
%token IF WHILE DO THEN ELSE ELSIF RETURN
%token CONST VAR PROCEDURE ARRAY OF TYPE RECORD POINTER TO UNION
%token CONST VAR PROCEDURE TYPE RECORD UNION
%token BEGIN_BLOCK END_BLOCK EXTERN DEFER
%token LEFT_PAREN RIGHT_PAREN LEFT_SQUARE RIGHT_SQUARE SEMICOLON DOT COMMA
%token AND OR NOT CAST SHIFT_LEFT SHIFT_RIGHT
@ -118,7 +118,7 @@ along with GCC; see the file COPYING3. If not see
%type <std::vector<elna::boot::type_definition *>> type_definitions type_part;
%type <elna::boot::block *> block;
%type <elna::boot::field_t> field_declaration;
%type <std::vector<std::pair<std::string, std::shared_ptr<elna::boot::top_type>>>> field_list;
%type <std::vector<std::pair<std::string, std::shared_ptr<elna::boot::top_type>>>> optional_fields fields;
%type <std::vector<elna::boot::conditional_statements *>> elsif_statement_list;
%type <elna::boot::cast_expression *> cast_expression;
%type <elna::boot::defer_statement *> defer_statement;
@ -414,9 +414,9 @@ statement:
}
| defer_statement { $$ = $1; }
statements:
statement SEMICOLON statements
statement statements
{
std::swap($$, $3);
std::swap($$, $2);
$$.emplace($$.cbegin(), $1);
}
| statement { $$.push_back($1); }
@ -425,27 +425,30 @@ optional_statements:
| /* no statements */ {}
field_declaration:
IDENTIFIER COLON type_expression { $$ = std::make_pair($1, $3); }
field_list:
field_declaration field_list
fields:
field_declaration fields
{
std::swap($$, $2);
$$.emplace($$.cbegin(), $1);
}
| field_declaration { $$.emplace_back($1); }
optional_fields:
fields { std::swap($$, $1); }
| /* no fields */ {}
type_expression:
ARRAY INTEGER OF type_expression
LEFT_SQUARE INTEGER RIGHT_SQUARE type_expression
{
$$ = std::make_shared<elna::boot::array_type>(elna::boot::make_position(@1), $4, $2);
}
| POINTER TO type_expression
| HAT type_expression
{
$$ = std::make_shared<elna::boot::pointer_type>(elna::boot::make_position(@1), $3);
$$ = std::make_shared<elna::boot::pointer_type>(elna::boot::make_position(@1), $2);
}
| RECORD field_list END_BLOCK
| RECORD optional_fields END_BLOCK
{
$$ = std::make_shared<elna::boot::record_type>(elna::boot::make_position(@1), std::move($2));
}
| UNION field_list END_BLOCK
| UNION fields END_BLOCK
{
$$ = std::make_shared<elna::boot::union_type>(elna::boot::make_position(@1), std::move($2));
}

18
gcc/elna-diagnostic.cc
View File

@ -30,6 +30,18 @@ namespace gcc
return linemap_position_for_column(line_table, position->column);
}
std::string print_aggregate_name(tree type, const std::string& kind_name)
{
if (TYPE_IDENTIFIER(type) == NULL_TREE)
{
return kind_name;
}
else
{
return std::string(IDENTIFIER_POINTER(TYPE_IDENTIFIER(type)));
}
}
std::string print_type(tree type)
{
gcc_assert(TYPE_P(type));
@ -68,7 +80,7 @@ namespace gcc
}
else if (is_pointer_type(type))
{
return std::string("pointer to " + print_type(TREE_TYPE(type)));
return std::string("^" + print_type(TREE_TYPE(type)));
}
else if (is_procedure_type(type))
{
@ -100,11 +112,11 @@ namespace gcc
}
else if (TREE_CODE(type) == RECORD_TYPE)
{
return "record";
return print_aggregate_name(type, "record");
}
else if (TREE_CODE(type) == UNION_TYPE)
{
return "union";
return print_aggregate_name(type, "union");
}
else
{

9
gcc/elna-generic.cc
View File

@ -733,6 +733,7 @@ namespace gcc
if (result)
{
TREE_PUBLIC(definition_tree) = definition->exported;
TYPE_NAME(tree_type) = get_identifier(definition->identifier.c_str());
}
else
{
@ -952,6 +953,14 @@ namespace gcc
this->current_expression = build_int_cstu(elna_word_type_node,
TYPE_ALIGN_UNIT(this->current_expression));
}
else if (expression->field() == "min" && is_integral_type(this->current_expression))
{
this->current_expression = TYPE_MIN_VALUE(this->current_expression);
}
else if (expression->field() == "max" && is_integral_type(this->current_expression))
{
this->current_expression = TYPE_MAX_VALUE(this->current_expression);
}
else
{
error_at(expression_location, "type '%s' does not have property '%s'",

503
source.elna
View File

@ -76,7 +76,7 @@ type
end
TokenValue* = union
int_value: Int
string_value: pointer to Char
string_value: ^Char
string: String
boolean_value: Bool
char_value: Char
@ -86,11 +86,9 @@ type
value: TokenValue
location: Location
end
FILE* = record
dummy: Int
end
FILE* = record end
CommandLine* = record
input: pointer to Char
input: ^Char
tokenize: Bool
syntax_tree: Bool
end
@ -98,11 +96,11 @@ type
value: Int
end
ConstantDefinition* = record
name: pointer to Char
body: pointer to Literal
name: ^Char
body: ^Literal
end
ConstantPart* = record
elements: pointer to pointer to ConstantDefinition
elements: ^^ConstantDefinition
count: Word
end
Program* = record
@ -112,48 +110,48 @@ type
(*
External procedures.
*)
proc fopen(pathname: pointer to Char, mode: pointer to Char) -> pointer to FILE; extern
proc fclose(stream: pointer to FILE) -> Int; extern
proc fseek(stream: pointer to FILE, off: Int, whence: Int) -> Int; extern
proc rewind(stream: pointer to FILE); extern
proc ftell(stream: pointer to FILE) -> Int; extern
proc fread(ptr: pointer to Byte, size: Word, nmemb: Word, stream: pointer to FILE) -> Word; extern
proc write(fd: Int, buf: pointer to Byte, Word: Int) -> Int; extern
proc fopen(pathname: ^Char, mode: ^Char) -> ^FILE; extern
proc fclose(stream: ^FILE) -> Int; extern
proc fseek(stream: ^FILE, off: Int, whence: Int) -> Int; extern
proc rewind(stream: ^FILE); extern
proc ftell(stream: ^FILE) -> Int; extern
proc fread(ptr: ^Byte, size: Word, nmemb: Word, stream: ^FILE) -> Word; extern
proc write(fd: Int, buf: ^Byte, Word: Int) -> Int; extern
proc malloc(size: Word) -> pointer to Byte; extern
proc free(ptr: pointer to Byte); extern
proc calloc(nmemb: Word, size: Word) -> pointer to Byte; extern
proc realloc(ptr: pointer to Byte, size: Word) -> pointer to Byte; extern
proc malloc(size: Word) -> ^Byte; extern
proc free(ptr: ^Byte); extern
proc calloc(nmemb: Word, size: Word) -> ^Byte; extern
proc realloc(ptr: ^Byte, size: Word) -> ^Byte; extern
proc memset(ptr: pointer to Char, c: Int, n: Int) -> pointer to Char; extern
proc memset(ptr: ^Char, c: Int, n: Int) -> ^Char; extern
proc strcmp(s1: pointer to Char, s2: pointer to Char) -> Int; extern
proc strncmp(s1: pointer to Char, s2: pointer to Char, n: Word) -> Int; extern
proc strncpy(dst: pointer to Char, src: pointer to Char, dsize: Word) -> pointer to Char; extern
proc strcpy(dst: pointer to Char, src: pointer to Char) -> pointer to Char; extern
proc strlen(ptr: pointer to Char) -> Word; extern
proc strcmp(s1: ^Char, s2: ^Char) -> Int; extern
proc strncmp(s1: ^Char, s2: ^Char, n: Word) -> Int; extern
proc strncpy(dst: ^Char, src: ^Char, dsize: Word) -> ^Char; extern
proc strcpy(dst: ^Char, src: ^Char) -> ^Char; extern
proc strlen(ptr: ^Char) -> Word; extern
proc strtol(nptr: pointer to Char, endptr: pointer to pointer to Char, base: Int) -> Int; extern
proc strtol(nptr: ^Char, endptr: ^^Char, base: Int) -> Int; extern
proc perror(s: pointer to Char); extern
proc perror(s: ^Char); extern
proc exit(code: Int); extern
(*
Standard procedures.
*)
proc reallocarray(ptr: pointer to Byte, n: Word, size: Word) -> pointer to Byte;
proc reallocarray(ptr: ^Byte, n: Word, size: Word) -> ^Byte;
begin
return realloc(ptr, n * size)
end
proc write_s(value: String);
begin
write(0, cast(value.ptr: pointer to Byte), cast(value.length: Int))
write(0, cast(value.ptr: ^Byte), cast(value.length: Int))
end
proc write_z(value: pointer to Char);
proc write_z(value: ^Char);
begin
write(0, cast(value: pointer to Byte), cast(strlen(value): Int))
write(0, cast(value: ^Byte), cast(strlen(value): Int))
end
proc write_b(value: Bool);
@ -167,29 +165,29 @@ end
proc write_c(value: Char);
begin
write(0, cast(@value: pointer to Byte), 1)
write(0, cast(@value: ^Byte), 1)
end
proc write_i(value: Int);
var
digit: Int
n: Word
buffer: array 10 of Char
buffer: [10]Char
begin
n := 10u;
n := 10u
if value = 0 then
write_c('0')
end;
end
while value <> 0 do
digit := value % 10;
value := value / 10;
digit := value % 10
value := value / 10
buffer[n] := cast(cast('0': Int) + digit: Char);
buffer[n] := cast(cast('0': Int) + digit: Char)
n := n - 1u
end;
end
while n < 10u do
n := n + 1u;
n := n + 1u
write_c(buffer[n])
end
end
@ -231,10 +229,10 @@ end
proc string_dup(origin: String) -> String;
var
copy: pointer to Char
copy: ^Char
begin
copy := cast(malloc(origin.length): pointer to Char);
strncpy(copy, origin.ptr, origin.length);
copy := cast(malloc(origin.length): ^Char)
strncpy(copy, origin.ptr, origin.length)
return String(copy, origin.length)
end
@ -248,85 +246,88 @@ begin
return Position(1u, 1u)
end
proc read_source(filename: pointer to Char, result: pointer to String) -> Bool;
proc read_source(filename: ^Char, result: ^String) -> Bool;
var
input_file: pointer to FILE
input_file: ^FILE
source_size: Int
input: pointer to Byte
input: ^Byte
begin
input_file := fopen(filename, "rb\0".ptr);
input_file := fopen(filename, "rb\0".ptr)
if input_file = nil then
return false
end;
end
defer
fclose(input_file)
end;
end
if fseek(input_file, 0, SEEK_END) <> 0 then
return false
end;
source_size := ftell(input_file);
end
source_size := ftell(input_file)
if source_size < 0 then
return false
end;
rewind(input_file);
end
rewind(input_file)
input := malloc(cast(source_size: Word));
input := malloc(cast(source_size: Word))
if fread(input, cast(source_size: Word), 1u, input_file) <> 1u then
return false
end;
result^ := String(cast(input: pointer to Char), cast(source_size: Word));
end
result^ := String(cast(input: ^Char), cast(source_size: Word))
return true
end
proc escape_char(escape: Char, result: pointer to Char) -> Bool;
proc escape_char(escape: Char, result: ^Char) -> Bool;
var
successful: Bool
begin
if escape = 'n' then
result^ := '\n';
return true
result^ := '\n'
successful := true
elsif escape = 'a' then
result^ := '\a';
return true
result^ := '\a'
successful := true
elsif escape = 'b' then
result^ := '\b';
return true
result^ := '\b'
successful := true
elsif escape = 't' then
result^ := '\t';
return true
result^ := '\t'
successful := true
elsif escape = 'f' then
result^ := '\f';
return true
result^ := '\f'
successful := true
elsif escape = 'r' then
result^ := '\r';
return true
result^ := '\r'
successful := true
elsif escape = 'v' then
result^ := '\v';
return true
result^ := '\v'
successful := true
elsif escape = '\\' then
result^ := '\\';
return true
result^ := '\\'
successful := true
elsif escape = '\'' then
result^ := '\'';
return true
result^ := '\''
successful := true
elsif escape = '"' then
result^ := '"';
return true
result^ := '"'
successful := true
elsif escape = '?' then
result^ := '\?';
return true
result^ := '\?'
successful := true
elsif escape = '0' then
result^ := '\0';
return true
result^ := '\0'
successful := true
else
return false
successful := false
end
return successful
end
proc advance_source(source_code: SourceCode, length: Word) -> SourceCode;
begin
source_code.text := open_substring(source_code.text, length);
source_code.position.column := source_code.position.column + length;
source_code.text := open_substring(source_code.text, length)
source_code.position.column := source_code.position.column + length
return source_code
end
@ -335,112 +336,112 @@ proc skip_spaces(source_code: SourceCode) -> SourceCode;
begin
while source_code.text.length > 0u and is_space(source_code.text[1u]) do
if source_code.text[1u] = '\n' then
source_code.position.line := source_code.position.line + 1u;
source_code.position.line := source_code.position.line + 1u
source_code.position.column := 1u
else
source_code.position.column := source_code.position.column + 1u
end;
end
source_code.text := open_substring(source_code.text, 1u)
end;
end
return source_code
end
proc lex_identifier(source_code: pointer to SourceCode, token_content: pointer to String);
proc lex_identifier(source_code: ^SourceCode, token_content: ^String);
var
content_length: Word
begin
content_length := 0u;
token_content^ := source_code^.text;
content_length := 0u
token_content^ := source_code^.text
while is_alnum(source_code^.text[1u]) or source_code^.text[1u] = '_' do
content_length := content_length + 1u;
content_length := content_length + 1u
source_code^ := advance_source(source_code^, 1u)
end;
end
token_content^ := substring(token_content^, 0u, content_length)
end
proc lex_comment(source_code: pointer to SourceCode, token_content: pointer to String) -> Bool;
proc lex_comment(source_code: ^SourceCode, token_content: ^String) -> Bool;
var
content_length: Word
begin
content_length := 0u;
token_content^ := source_code^.text;
content_length := 0u
token_content^ := source_code^.text
while source_code^.text.length > 1u do
if source_code^.text[1u] = '*' and source_code^.text[2u] = ')' then
source_code^ := advance_source(source_code^, 2u);
token_content^ := substring(token_content^, 0u, content_length);
source_code^ := advance_source(source_code^, 2u)
token_content^ := substring(token_content^, 0u, content_length)
return true
end;
content_length := content_length + 1u;
end
content_length := content_length + 1u
source_code^ := advance_source(source_code^, 1u)
end;
end
return false
end
proc lex_character(input: pointer to Char, current_token: pointer to Token) -> pointer to Char;
proc lex_character(input: ^Char, current_token: ^Token) -> ^Char;
begin
if input^ = '\\' then
input := input + 1;
input := input + 1
if escape_char(input^, @current_token^.value.char_value) then
input := input + 1
end
elsif input^ <> '\0' then
current_token^.value.char_value := input^;
current_token^.value.char_value := input^
input := input + 1
end;
end
return input
end
proc lex_string(input: pointer to Char, current_token: pointer to Token) -> pointer to Char;
proc lex_string(input: ^Char, current_token: ^Token) -> ^Char;
var
token_end, constructed_string: pointer to Char
token_end, constructed_string: ^Char
token_length: Word
is_valid: Bool
begin
token_end := input;
token_end := input
while token_end^ <> '\0' and not ((token_end - 1)^ <> '\\' and token_end^ = '"') do
token_end := token_end + 1
end;
end
if token_end^ <> '\"' then
return input
end;
token_length := cast(token_end - input: Word);
current_token^.value.string_value := cast(calloc(token_length, 1u): pointer to Char);
end
token_length := cast(token_end - input: Word)
current_token^.value.string_value := cast(calloc(token_length, 1u): ^Char)
is_valid := true;
constructed_string := current_token^.value.string_value;
is_valid := true
constructed_string := current_token^.value.string_value
while input < token_end and is_valid do
if input^ = '\\' then
input := input + 1;
input := input + 1
if escape_char(input^, constructed_string) then
input := input + 1
else
is_valid := false
end
elsif input^ <> '\0' then
constructed_string^ := input^;
constructed_string^ := input^
input := input + 1
end;
end
constructed_string := constructed_string + 1
end;
end
return token_end
end
proc print_tokens(tokens: pointer to Token, tokens_size: Word);
proc print_tokens(tokens: ^Token, tokens_size: Word);
var
current_token: pointer to Token
current_token: ^Token
i: Word
begin
i := 0u;
i := 0u
while i < tokens_size do
current_token := tokens + i;
current_token := tokens + i
if current_token^.kind = TOKEN_IF then
write_s("IF")
@ -481,8 +482,8 @@ begin
elsif current_token^.kind = TOKEN_TO then
write_s("TO")
elsif current_token^.kind = TOKEN_BOOLEAN then
write_s("BOOLEAN<");
write_b(current_token^.value.boolean_value);
write_s("BOOLEAN<")
write_b(current_token^.value.boolean_value)
write_c('>')
elsif current_token^.kind = TOKEN_NIL then
write_s("NIL")
@ -501,8 +502,8 @@ begin
elsif current_token^.kind = TOKEN_SHIFT_RIGHT then
write_s(">>")
elsif current_token^.kind = TOKEN_IDENTIFIER then
write_c('<');
write_s(current_token^.value.string);
write_c('<')
write_s(current_token^.value.string)
write_c('>')
elsif current_token^.kind = TOKEN_LEFT_PAREN then
write_s("(")
@ -551,30 +552,30 @@ begin
elsif current_token^.kind = TOKEN_COMMENT then
write_s("(* COMMENT *)")
elsif current_token^.kind = TOKEN_INTEGER then
write_c('<');
write_i(current_token^.value.int_value);
write_c('<')
write_i(current_token^.value.int_value)
write_c('>')
elsif current_token^.kind = TOKEN_WORD then
write_c('<');
write_i(current_token^.value.int_value);
write_c('<')
write_i(current_token^.value.int_value)
write_s("u>")
elsif current_token^.kind = TOKEN_CHARACTER then
write_c('<');
write_i(cast(current_token^.value.char_value: Int));
write_c('<')
write_i(cast(current_token^.value.char_value: Int))
write_s("c>")
elsif current_token^.kind = TOKEN_STRING then
write_s("\"...\"")
elsif current_token^.kind = TOKEN_DEFER then
write_s("DEFER")
else
write_s("UNKNOWN<");
write_i(current_token^.kind);
write_s("UNKNOWN<")
write_i(current_token^.kind)
write_c('>')
end;
write_c(' ');
end
write_c(' ')
i := i + 1u
end;
end
write_c('\n')
end
@ -621,10 +622,10 @@ begin
elsif "to" = token_content then
current_token.kind := TOKEN_TO
elsif "true" = token_content then
current_token.kind := TOKEN_BOOLEAN;
current_token.kind := TOKEN_BOOLEAN
current_token.value.boolean_value := true
elsif "false" = token_content then
current_token.kind := TOKEN_BOOLEAN;
current_token.kind := TOKEN_BOOLEAN
current_token.value.boolean_value := false
elsif "nil" = token_content then
current_token.kind := TOKEN_NIL
@ -641,55 +642,55 @@ begin
elsif "defer" = token_content then
current_token.kind := TOKEN_DEFER
else
current_token.kind := TOKEN_IDENTIFIER;
current_token.kind := TOKEN_IDENTIFIER
current_token.value.string := string_dup(token_content)
end;
end
return current_token
end
proc tokenize(source_code: SourceCode, tokens_size: pointer to Word) -> pointer to Token;
proc tokenize(source_code: SourceCode, tokens_size: ^Word) -> ^Token;
var
token_end: pointer to Char
tokens, current_token: pointer to Token
token_end: ^Char
tokens, current_token: ^Token
token_length: Word
first_char: Char
token_content: String
begin
tokens_size^ := 0u;
tokens := nil;
source_code := skip_spaces(source_code);
tokens_size^ := 0u
tokens := nil
source_code := skip_spaces(source_code)
while source_code.text.length <> 0u do
tokens := cast(reallocarray(cast(tokens: pointer to Byte), tokens_size^ + 1u, Token.size): pointer to Token);
current_token := tokens + tokens_size^;
first_char := source_code.text[1u];
tokens := cast(reallocarray(cast(tokens: ^Byte), tokens_size^ + 1u, Token.size): ^Token)
current_token := tokens + tokens_size^
first_char := source_code.text[1u]
if is_alpha(first_char) or first_char = '_' then
lex_identifier(@source_code, @token_content);
lex_identifier(@source_code, @token_content)
current_token^ := categorize_identifier(token_content)
elsif is_digit(first_char) then
token_end := nil;
current_token^.value.int_value := strtol(source_code.text.ptr, @token_end, 10);
token_length := cast(token_end - source_code.text.ptr: Word);
token_end := nil
current_token^.value.int_value := strtol(source_code.text.ptr, @token_end, 10)
token_length := cast(token_end - source_code.text.ptr: Word)
if token_end^ = 'u' then
current_token^.kind := TOKEN_WORD;
current_token^.kind := TOKEN_WORD
source_code := advance_source(source_code, token_length + 1u)
else
current_token^.kind := TOKEN_INTEGER;
current_token^.kind := TOKEN_INTEGER
source_code := advance_source(source_code, token_length)
end
elsif first_char = '(' then
source_code := advance_source(source_code, 1u);
source_code := advance_source(source_code, 1u)
if source_code.text.length = 0u then
current_token^.kind := TOKEN_LEFT_PAREN
elsif source_code.text[1u] = '*' then
source_code := advance_source(source_code, 1u);
source_code := advance_source(source_code, 1u)
if lex_comment(@source_code, @token_content) then
current_token^.value.string := string_dup(token_content);
current_token^.value.string := string_dup(token_content)
current_token^.kind := TOKEN_COMMENT
else
current_token^.kind := 0
@ -698,180 +699,180 @@ begin
current_token^.kind := TOKEN_LEFT_PAREN
end
elsif first_char = ')' then
current_token^.kind := TOKEN_RIGHT_PAREN;
current_token^.kind := TOKEN_RIGHT_PAREN
source_code := advance_source(source_code, 1u)
elsif first_char = '\'' then
token_end := lex_character(source_code.text.ptr + 1, current_token);
token_length := cast(token_end - source_code.text.ptr: Word);
token_end := lex_character(source_code.text.ptr + 1, current_token)
token_length := cast(token_end - source_code.text.ptr: Word)
if token_end^ = '\'' then
current_token^.kind := TOKEN_CHARACTER;
current_token^.kind := TOKEN_CHARACTER
source_code := advance_source(source_code, token_length + 1u)
else
source_code := advance_source(source_code, 1u)
end
elsif first_char = '"' then
token_end := lex_string(source_code.text.ptr + 1, current_token);
token_end := lex_string(source_code.text.ptr + 1, current_token)
if token_end^ = '"' then
current_token^.kind := TOKEN_STRING;
token_length := cast(token_end - source_code.text.ptr: Word);
current_token^.kind := TOKEN_STRING
token_length := cast(token_end - source_code.text.ptr: Word)
source_code := advance_source(source_code, token_length + 1u)
end
elsif first_char = '[' then
current_token^.kind := TOKEN_LEFT_SQUARE;
current_token^.kind := TOKEN_LEFT_SQUARE
source_code := advance_source(source_code, 1u)
elsif first_char = ']' then
current_token^.kind := TOKEN_RIGHT_SQUARE;
current_token^.kind := TOKEN_RIGHT_SQUARE
source_code := advance_source(source_code, 1u)
elsif first_char = '>' then
source_code := advance_source(source_code, 1u);
source_code := advance_source(source_code, 1u)
if source_code.text.length = 0u then
current_token^.kind := TOKEN_GREATER_THAN
elsif source_code.text[1u] = '=' then
current_token^.kind := TOKEN_GREATER_EQUAL;
current_token^.kind := TOKEN_GREATER_EQUAL
source_code := advance_source(source_code, 1u)
elsif source_code.text[1u] = '>' then
current_token^.kind := TOKEN_SHIFT_RIGHT;
current_token^.kind := TOKEN_SHIFT_RIGHT
source_code := advance_source(source_code, 1u)
else
current_token^.kind := TOKEN_GREATER_THAN
end
elsif first_char = '<' then
source_code := advance_source(source_code, 1u);
source_code := advance_source(source_code, 1u)
if source_code.text.length = 0u then
current_token^.kind := TOKEN_LESS_THAN
elsif source_code.text[1u] = '=' then
current_token^.kind := TOKEN_LESS_EQUAL;
current_token^.kind := TOKEN_LESS_EQUAL
source_code := advance_source(source_code, 1u)
elsif source_code.text[1u] = '<' then
current_token^.kind := TOKEN_SHIFT_LEFT;
current_token^.kind := TOKEN_SHIFT_LEFT
source_code := advance_source(source_code, 1u)
elsif source_code.text[1u] = '>' then
current_token^.kind := TOKEN_NOT_EQUAL;
current_token^.kind := TOKEN_NOT_EQUAL
source_code := advance_source(source_code, 1u)
else
current_token^.kind := TOKEN_LESS_THAN
end
elsif first_char = '=' then
current_token^.kind := TOKEN_EQUAL;
current_token^.kind := TOKEN_EQUAL
source_code := advance_source(source_code, 1u)
elsif first_char = ';' then
current_token^.kind := TOKEN_SEMICOLON;
current_token^.kind := TOKEN_SEMICOLON
source_code := advance_source(source_code, 1u)
elsif first_char = '.' then
current_token^.kind := TOKEN_DOT;
current_token^.kind := TOKEN_DOT
source_code := advance_source(source_code, 1u)
elsif first_char = ',' then
current_token^.kind := TOKEN_COMMA;
current_token^.kind := TOKEN_COMMA
source_code := advance_source(source_code, 1u)
elsif first_char = '+' then
current_token^.kind := TOKEN_PLUS;
current_token^.kind := TOKEN_PLUS
source_code := advance_source(source_code, 1u)
elsif first_char = '-' then
current_token^.kind := TOKEN_MINUS;
current_token^.kind := TOKEN_MINUS
source_code := advance_source(source_code, 1u)
elsif first_char = '*' then
current_token^.kind := TOKEN_MULTIPLICATION;
current_token^.kind := TOKEN_MULTIPLICATION
source_code := advance_source(source_code, 1u)
elsif first_char = '/' then
current_token^.kind := TOKEN_DIVISION;
current_token^.kind := TOKEN_DIVISION
source_code := advance_source(source_code, 1u)
elsif first_char = '%' then
current_token^.kind := TOKEN_REMAINDER;
current_token^.kind := TOKEN_REMAINDER
source_code := advance_source(source_code, 1u)
elsif first_char = ':' then
source_code := advance_source(source_code, 1u);
source_code := advance_source(source_code, 1u)
if source_code.text.length = 0u then
current_token^.kind := TOKEN_COLON
elsif source_code.text[1u] = '=' then
current_token^.kind := TOKEN_ASSIGNMENT;
current_token^.kind := TOKEN_ASSIGNMENT
source_code := advance_source(source_code, 1u)
else
current_token^.kind := TOKEN_COLON
end
elsif first_char = '^' then
current_token^.kind := TOKEN_HAT;
current_token^.kind := TOKEN_HAT
source_code := advance_source(source_code, 1u)
elsif first_char = '@' then
current_token^.kind := TOKEN_AT;
current_token^.kind := TOKEN_AT
source_code := advance_source(source_code, 1u)
else
current_token^.kind := 0;
current_token^.kind := 0
source_code := advance_source(source_code, 1u)
end;
end
if current_token^.kind <> 0 then
tokens_size^ := tokens_size^ + 1u;
tokens_size^ := tokens_size^ + 1u
source_code := skip_spaces(source_code)
else
write_s("Lexical analysis error on \"");
write_c(first_char);
write_s("Lexical analysis error on \"")
write_c(first_char)
write_s("\".\n")
end
end;
end
return tokens
end
proc parse_literal(tokens: pointer to pointer to Token, tokens_size: pointer to Word) -> pointer to Literal;
proc parse_literal(tokens: ^^Token, tokens_size: ^Word) -> ^Literal;
begin
return cast(calloc(1u, Literal.size): pointer to Literal)
return cast(calloc(1u, Literal.size): ^Literal)
end
proc parse_constant_definition(tokens: pointer to pointer to Token,
tokens_size: pointer to Word) -> pointer to ConstantDefinition;
proc parse_constant_definition(tokens: ^^Token,
tokens_size: ^Word) -> ^ConstantDefinition;
var
result: pointer to ConstantDefinition
result: ^ConstantDefinition
begin
result := cast(calloc(1u, ConstantDefinition.size): pointer to ConstantDefinition);
result := cast(calloc(1u, ConstantDefinition.size): ^ConstantDefinition)
result^.name := cast(malloc(strlen(tokens^^.value.string_value)): pointer to Char);
strcpy(result^.name, tokens^^.value.string_value);
result^.name := cast(malloc(strlen(tokens^^.value.string_value)): ^Char)
strcpy(result^.name, tokens^^.value.string_value)
tokens^ := tokens^ + 2u;
tokens_size := tokens_size - 2u;
tokens^ := tokens^ + 2u
tokens_size := tokens_size - 2u
write_z(result^.name);
write_c('\n');
write_z(result^.name)
write_c('\n')
result^.body := parse_literal(tokens, tokens_size);
result^.body := parse_literal(tokens, tokens_size)
tokens^ := tokens^ + 2u;
tokens_size := tokens_size - 2u;
tokens^ := tokens^ + 2u
tokens_size := tokens_size - 2u
return result
end
proc parse_program(tokens: pointer to pointer to Token, tokens_size: pointer to Word) -> pointer to Program;
proc parse_program(tokens: ^^Token, tokens_size: ^Word) -> ^Program;
var
result: pointer to Program
current_constant: pointer to pointer to ConstantDefinition
result: ^Program
current_constant: ^^ConstantDefinition
begin
result := cast(calloc(1u, Program.size): pointer to Program);
result := cast(calloc(1u, Program.size): ^Program)
result^.constants.elements := nil;
result^.constants.count := 0u;
result^.constants.elements := nil
result^.constants.count := 0u
if tokens^^.kind = TOKEN_CONST then
tokens^ := tokens^ + 1;
tokens_size^ := tokens_size^ - 1u;
tokens^ := tokens^ + 1
tokens_size^ := tokens_size^ - 1u
while tokens_size^ > 0u and tokens^^.kind = TOKEN_IDENTIFIER do
result^.constants.elements := cast(
reallocarray(
cast(result^.constants.elements: pointer to Byte),
cast(result^.constants.elements: ^Byte),
result^.constants.count + 1u,
(pointer to ConstantDefinition).size
) : pointer to pointer to ConstantDefinition);
current_constant := result^.constants.elements + result^.constants.count;
(^ConstantDefinition).size
) : ^^ConstantDefinition)
current_constant := result^.constants.elements + result^.constants.count
result^.constants.count := result^.constants.count + 1u;
result^.constants.count := result^.constants.count + 1u
current_constant^ := parse_constant_definition(tokens, tokens_size);
current_constant^ := parse_constant_definition(tokens, tokens_size)
if current_constant^ = nil then
return nil
end
@ -879,20 +880,20 @@ begin
end
end
proc parse_command_line*(argc: Int, argv: pointer to pointer to Char) -> pointer to CommandLine;
proc parse_command_line*(argc: Int, argv: ^^Char) -> ^CommandLine;
var
parameter: pointer to pointer to Char
parameter: ^^Char
i: Int
result: pointer to CommandLine
result: ^CommandLine
begin
i := 1;
result := cast(malloc(CommandLine.size): pointer to CommandLine);
result^.tokenize := false;
result^.syntax_tree := false;
result^.input := nil;
i := 1
result := cast(malloc(CommandLine.size): ^CommandLine)
result^.tokenize := false
result^.syntax_tree := false
result^.input := nil
while i < argc do
parameter := argv + i;
parameter := argv + i
if strcmp(parameter^, "--tokenize\0".ptr) = 0 then
result^.tokenize := true
@ -901,53 +902,53 @@ begin
elsif parameter^^ <> '-' then
result^.input := parameter^
else
write_s("Fatal error: Unknown command line options:");
write_s("Fatal error: Unknown command line options:")
write_c(' ');
write_z(parameter^);
write_s(".\n");
write_c(' ')
write_z(parameter^)
write_s(".\n")
return nil
end;
end
i := i + 1
end;
end
if result^.input = nil then
write_s("Fatal error: no input files.\n");
write_s("Fatal error: no input files.\n")
return nil
end;
end
return result
end
proc process(argc: Int, argv: pointer to pointer to Char) -> Int;
proc process(argc: Int, argv: ^^Char) -> Int;
var
tokens: pointer to Token
tokens: ^Token
tokens_size: Word
source_code: SourceCode
command_line: pointer to CommandLine
command_line: ^CommandLine
begin
command_line := parse_command_line(argc, argv);
command_line := parse_command_line(argc, argv)
if command_line = nil then
return 2
end;
end
source_code.position := make_position();
source_code.position := make_position()
if not read_source(command_line^.input, @source_code.text) then
perror(command_line^.input);
perror(command_line^.input)
return 3
end;
tokens := tokenize(source_code, @tokens_size);
end
tokens := tokenize(source_code, @tokens_size)
if command_line^.tokenize then
print_tokens(tokens, tokens_size)
end;
end
if command_line^.syntax_tree then
parse_program(@tokens, @tokens_size)
end;
end
return 0
end
begin
exit(process(cast(count: Int), cast(parameters: pointer to pointer to Char)))
exit(process(cast(count: Int), cast(parameters: ^^Char)))
end.