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[FEAT] Structs and arrays supported as expression atoms

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This commit is contained in:
Raimon Zamora
2021-05-04 15:38:01 +02:00
parent 58808d33a5
commit 28b059c57e
4 changed files with 39 additions and 15 deletions
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43
parser.cpp
View File

@@ -231,7 +231,9 @@ static void parse_getcolor();
*/
#define EXPECT(X, Y) if (tkn_get_token() != X) { parser_finished = true; error_raise(Y); return; }
#define EXPECT2(X, Y) if (tkn_get_token() != X) { parser_finished = true; error_raise(Y); return -1; }
#define HALT(Y) { parser_finished = true; error_raise(Y); return; }
#define HALT2(Y) { parser_finished = true; error_raise(Y); return -1; }
/*
static void parse_concat_atom() {
@@ -279,17 +281,31 @@ static void parse_concatenation() {
static int get_variable_address() {
int address = scope_get_variable_address();
const uint32_t var_length = scope_get_variable_size();
const uint32_t var_type = scope_get_variable_type();
if (var_length > 1) {
tkn_next(); EXPECT(TOKEN_LBRACKET, "Expected '['");
tkn_next(); EXPECT(TOKEN_NUMBER, "Expected number");
const float index = tkn_get_value();
tkn_next(); EXPECT(TOKEN_LBRACKET, "Expected ']'");
address += index * types_get_length(var_type);
}
if (var_type >= 2) {
uint32_t var_length = scope_get_variable_size();
uint32_t var_type = scope_get_variable_type();
while (true) {
// Si es un array...
if (var_length > 1) {
tkn_next(); EXPECT2(TOKEN_LBRACKET, "Expected '['");
tkn_next(); EXPECT2(TOKEN_NUMBER, "Expected number");
const float index = tkn_get_value();
tkn_next(); EXPECT2(TOKEN_RBRACKET, "Expected ']'");
address += index * types_get_length(var_type);
}
// Si es un struct...
if (var_type >= 2) {
tkn_next(); EXPECT2(TOKEN_DOT, "Expected '.'");
tkn_next(); EXPECT2(TOKEN_IDENTIFIER, "Expected identifier");
const std::string member_name = tkn_get_string();
const int member_num = types_member_exists(var_type, member_name);
if (member_num == -1) HALT2("Unknown member");
address += types_get_member_offset(var_type, member_num);
var_length = types_get_member_length(var_type, member_num);
var_type = types_get_member_type(var_type, member_num);
} else {
return address;
}
}
}
@@ -303,9 +319,10 @@ static void parse_expr_atom() {
}
if (tkn_get_token() == TOKEN_IDENTIFIER) {
if (scope_variable_exists(tkn_get_string())) {
// TODO [RZC 03/05/2021] Revisar si hi ha que navegar un struct o array
const int address = get_variable_address();
if (address == -1) return;
emmit(scope_is_local() ? OP_LDL : OP_LD);
emmit(scope_get_variable_address());
emmit(address);
tkn_next();
return;
} else {

2
test.vb
View File

@@ -11,4 +11,4 @@ struct triangle
end
var peiv as array of 2 triangle
const perico as number = 4-peiv
const perico as number = 4-peiv[0].a.x

8
types.cpp
View File

@@ -57,4 +57,10 @@ const int types_get_member_length(const uint32_t type, const uint32_t member) {
if (type >= types.size()) return -1; // ERROR INTERN: No deuria donar-se mai
if (member >= types[type].members.size()) return -1; // ERROR INTERN: No deuria donar-se mai
return types[type].members[member].length;
}
}
const int types_get_member_offset(const uint32_t type, const uint32_t member) {
if (type >= types.size()) return -1; // ERROR INTERN: No deuria donar-se mai
if (member >= types[type].members.size()) return -1; // ERROR INTERN: No deuria donar-se mai
return types[type].members[member].address;
}

1
types.h
View File

@@ -11,3 +11,4 @@ const int types_add_member(const uint32_t type, const std::string name, const ui
const int types_member_exists(const uint32_t type, const std::string name);
const int types_get_member_type(const uint32_t type, const uint32_t member);
const int types_get_member_length(const uint32_t type, const uint32_t member);
const int types_get_member_offset(const uint32_t type, const uint32_t member);