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-rw-r--r--modules/gdscript/gdscript_parser.cpp192
1 files changed, 139 insertions, 53 deletions
diff --git a/modules/gdscript/gdscript_parser.cpp b/modules/gdscript/gdscript_parser.cpp
index 64a393f90c..c901d9f68f 100644
--- a/modules/gdscript/gdscript_parser.cpp
+++ b/modules/gdscript/gdscript_parser.cpp
@@ -337,12 +337,29 @@ Error GDScriptParser::parse(const String &p_source_code, const String &p_script_
tokenizer.set_cursor_position(cursor_line, cursor_column);
script_path = p_script_path;
current = tokenizer.scan();
- // Avoid error as the first token.
- while (current.type == GDScriptTokenizer::Token::ERROR) {
- push_error(current.literal);
+ // Avoid error or newline as the first token.
+ // The latter can mess with the parser when opening files filled exclusively with comments and newlines.
+ while (current.type == GDScriptTokenizer::Token::ERROR || current.type == GDScriptTokenizer::Token::NEWLINE) {
+ if (current.type == GDScriptTokenizer::Token::ERROR) {
+ push_error(current.literal);
+ }
current = tokenizer.scan();
}
+#ifdef DEBUG_ENABLED
+ // Warn about parsing an empty script file:
+ if (current.type == GDScriptTokenizer::Token::TK_EOF) {
+ // Create a dummy Node for the warning, pointing to the very beginning of the file
+ Node *nd = alloc_node<PassNode>();
+ nd->start_line = 1;
+ nd->start_column = 0;
+ nd->end_line = 1;
+ nd->leftmost_column = 0;
+ nd->rightmost_column = 0;
+ push_warning(nd, GDScriptWarning::EMPTY_FILE);
+ }
+#endif
+
push_multiline(false); // Keep one for the whole parsing.
parse_program();
pop_multiline();
@@ -1682,6 +1699,7 @@ GDScriptParser::MatchNode *GDScriptParser::parse_match() {
while (!check(GDScriptTokenizer::Token::DEDENT) && !is_at_end()) {
MatchBranchNode *branch = parse_match_branch();
if (branch == nullptr) {
+ advance();
continue;
}
@@ -1745,7 +1763,9 @@ GDScriptParser::MatchBranchNode *GDScriptParser::parse_match_branch() {
push_error(R"(No pattern found for "match" branch.)");
}
- consume(GDScriptTokenizer::Token::COLON, R"(Expected ":" after "match" patterns.)");
+ if (!consume(GDScriptTokenizer::Token::COLON, R"(Expected ":" after "match" patterns.)")) {
+ return nullptr;
+ }
// Save continue state.
bool could_continue = can_continue;
@@ -1778,15 +1798,6 @@ GDScriptParser::PatternNode *GDScriptParser::parse_match_pattern(PatternNode *p_
PatternNode *pattern = alloc_node<PatternNode>();
switch (current.type) {
- case GDScriptTokenizer::Token::LITERAL:
- advance();
- pattern->pattern_type = PatternNode::PT_LITERAL;
- pattern->literal = parse_literal();
- if (pattern->literal == nullptr) {
- // Error happened.
- return nullptr;
- }
- break;
case GDScriptTokenizer::Token::VAR: {
// Bind.
advance();
@@ -1849,44 +1860,44 @@ GDScriptParser::PatternNode *GDScriptParser::parse_match_pattern(PatternNode *p_
// Dictionary.
advance();
pattern->pattern_type = PatternNode::PT_DICTIONARY;
-
- if (!check(GDScriptTokenizer::Token::BRACE_CLOSE) && !is_at_end()) {
- do {
- if (match(GDScriptTokenizer::Token::PERIOD_PERIOD)) {
- // Rest.
+ do {
+ if (check(GDScriptTokenizer::Token::BRACE_CLOSE) || is_at_end()) {
+ break;
+ }
+ if (match(GDScriptTokenizer::Token::PERIOD_PERIOD)) {
+ // Rest.
+ if (pattern->rest_used) {
+ push_error(R"(The ".." pattern must be the last element in the pattern dictionary.)");
+ } else {
+ PatternNode *sub_pattern = alloc_node<PatternNode>();
+ sub_pattern->pattern_type = PatternNode::PT_REST;
+ pattern->dictionary.push_back({ nullptr, sub_pattern });
+ pattern->rest_used = true;
+ }
+ } else {
+ ExpressionNode *key = parse_expression(false);
+ if (key == nullptr) {
+ push_error(R"(Expected expression as key for dictionary pattern.)");
+ }
+ if (match(GDScriptTokenizer::Token::COLON)) {
+ // Value pattern.
+ PatternNode *sub_pattern = parse_match_pattern(p_root_pattern != nullptr ? p_root_pattern : pattern);
+ if (sub_pattern == nullptr) {
+ continue;
+ }
if (pattern->rest_used) {
push_error(R"(The ".." pattern must be the last element in the pattern dictionary.)");
+ } else if (sub_pattern->pattern_type == PatternNode::PT_REST) {
+ push_error(R"(The ".." pattern cannot be used as a value.)");
} else {
- PatternNode *sub_pattern = alloc_node<PatternNode>();
- sub_pattern->pattern_type = PatternNode::PT_REST;
- pattern->dictionary.push_back({ nullptr, sub_pattern });
- pattern->rest_used = true;
+ pattern->dictionary.push_back({ key, sub_pattern });
}
} else {
- ExpressionNode *key = parse_expression(false);
- if (key == nullptr) {
- push_error(R"(Expected expression as key for dictionary pattern.)");
- }
- if (match(GDScriptTokenizer::Token::COLON)) {
- // Value pattern.
- PatternNode *sub_pattern = parse_match_pattern(p_root_pattern != nullptr ? p_root_pattern : pattern);
- if (sub_pattern == nullptr) {
- continue;
- }
- if (pattern->rest_used) {
- push_error(R"(The ".." pattern must be the last element in the pattern dictionary.)");
- } else if (sub_pattern->pattern_type == PatternNode::PT_REST) {
- push_error(R"(The ".." pattern cannot be used as a value.)");
- } else {
- pattern->dictionary.push_back({ key, sub_pattern });
- }
- } else {
- // Key match only.
- pattern->dictionary.push_back({ key, nullptr });
- }
+ // Key match only.
+ pattern->dictionary.push_back({ key, nullptr });
}
- } while (match(GDScriptTokenizer::Token::COMMA));
- }
+ }
+ } while (match(GDScriptTokenizer::Token::COMMA));
consume(GDScriptTokenizer::Token::BRACE_CLOSE, R"(Expected "}" to close the dictionary pattern.)");
break;
}
@@ -1895,8 +1906,13 @@ GDScriptParser::PatternNode *GDScriptParser::parse_match_pattern(PatternNode *p_
ExpressionNode *expression = parse_expression(false);
if (expression == nullptr) {
push_error(R"(Expected expression for match pattern.)");
+ return nullptr;
} else {
- pattern->pattern_type = PatternNode::PT_EXPRESSION;
+ if (expression->type == GDScriptParser::Node::LITERAL) {
+ pattern->pattern_type = PatternNode::PT_LITERAL;
+ } else {
+ pattern->pattern_type = PatternNode::PT_EXPRESSION;
+ }
pattern->expression = expression;
}
break;
@@ -2107,22 +2123,34 @@ GDScriptParser::ExpressionNode *GDScriptParser::parse_unary_operator(ExpressionN
operation->operation = UnaryOpNode::OP_NEGATIVE;
operation->variant_op = Variant::OP_NEGATE;
operation->operand = parse_precedence(PREC_SIGN, false);
+ if (operation->operand == nullptr) {
+ push_error(R"(Expected expression after "-" operator.)");
+ }
break;
case GDScriptTokenizer::Token::PLUS:
operation->operation = UnaryOpNode::OP_POSITIVE;
operation->variant_op = Variant::OP_POSITIVE;
operation->operand = parse_precedence(PREC_SIGN, false);
+ if (operation->operand == nullptr) {
+ push_error(R"(Expected expression after "+" operator.)");
+ }
break;
case GDScriptTokenizer::Token::TILDE:
operation->operation = UnaryOpNode::OP_COMPLEMENT;
operation->variant_op = Variant::OP_BIT_NEGATE;
operation->operand = parse_precedence(PREC_BIT_NOT, false);
+ if (operation->operand == nullptr) {
+ push_error(R"(Expected expression after "~" operator.)");
+ }
break;
case GDScriptTokenizer::Token::NOT:
case GDScriptTokenizer::Token::BANG:
operation->operation = UnaryOpNode::OP_LOGIC_NOT;
operation->variant_op = Variant::OP_NOT;
operation->operand = parse_precedence(PREC_LOGIC_NOT, false);
+ if (operation->operand == nullptr) {
+ push_error(vformat(R"(Expected expression after "%s" operator.)", op_type == GDScriptTokenizer::Token::NOT ? "not" : "!"));
+ }
break;
default:
return nullptr; // Unreachable.
@@ -2259,6 +2287,10 @@ GDScriptParser::ExpressionNode *GDScriptParser::parse_ternary_operator(Expressio
operation->false_expr = parse_precedence(PREC_TERNARY, false);
+ if (operation->false_expr == nullptr) {
+ push_error(R"(Expected expression after "else".)");
+ }
+
return operation;
}
@@ -2370,8 +2402,12 @@ GDScriptParser::ExpressionNode *GDScriptParser::parse_assignment(ExpressionNode
}
#ifdef DEBUG_ENABLED
- if (has_operator && source_variable != nullptr && source_variable->assignments == 0) {
- push_warning(assignment, GDScriptWarning::UNASSIGNED_VARIABLE_OP_ASSIGN, source_variable->identifier->name);
+ if (source_variable != nullptr) {
+ if (has_operator && source_variable->assignments == 0) {
+ push_warning(assignment, GDScriptWarning::UNASSIGNED_VARIABLE_OP_ASSIGN, source_variable->identifier->name);
+ }
+
+ source_variable->assignments += 1;
}
#endif
@@ -2386,7 +2422,9 @@ GDScriptParser::ExpressionNode *GDScriptParser::parse_await(ExpressionNode *p_pr
}
await->to_await = element;
- current_function->is_coroutine = true;
+ if (current_function) { // Might be null in a getter or setter.
+ current_function->is_coroutine = true;
+ }
return await;
}
@@ -2450,8 +2488,13 @@ GDScriptParser::ExpressionNode *GDScriptParser::parse_dictionary(ExpressionNode
switch (dictionary->style) {
case DictionaryNode::LUA_TABLE:
- if (key != nullptr && key->type != Node::IDENTIFIER) {
- push_error("Expected identifier as LUA-style dictionary key.");
+ if (key != nullptr && key->type != Node::IDENTIFIER && key->type != Node::LITERAL) {
+ push_error("Expected identifier or string as LUA-style dictionary key.");
+ advance();
+ break;
+ }
+ if (key != nullptr && key->type == Node::LITERAL && static_cast<LiteralNode *>(key)->value.get_type() != Variant::STRING) {
+ push_error("Expected identifier or string as LUA-style dictionary key.");
advance();
break;
}
@@ -2463,8 +2506,14 @@ GDScriptParser::ExpressionNode *GDScriptParser::parse_dictionary(ExpressionNode
push_error(R"(Expected "=" after dictionary key.)");
}
}
- key->is_constant = true;
- key->reduced_value = static_cast<IdentifierNode *>(key)->name;
+ if (key != nullptr) {
+ key->is_constant = true;
+ if (key->type == Node::IDENTIFIER) {
+ key->reduced_value = static_cast<IdentifierNode *>(key)->name;
+ } else if (key->type == Node::LITERAL) {
+ key->reduced_value = StringName(static_cast<LiteralNode *>(key)->value.operator String());
+ }
+ }
break;
case DictionaryNode::PYTHON_DICT:
if (!match(GDScriptTokenizer::Token::COLON)) {
@@ -2543,6 +2592,10 @@ GDScriptParser::ExpressionNode *GDScriptParser::parse_subscript(ExpressionNode *
subscript->base = p_previous_operand;
subscript->index = parse_expression(false);
+ if (subscript->index == nullptr) {
+ push_error(R"(Expected expression after "[".)");
+ }
+
pop_multiline();
consume(GDScriptTokenizer::Token::BRACKET_CLOSE, R"(Expected "]" after subscription index.)");
@@ -3538,6 +3591,39 @@ String GDScriptParser::DataType::to_string() const {
ERR_FAIL_V_MSG("<unresolved type", "Kind set outside the enum range.");
}
+static Variant::Type _variant_type_to_typed_array_element_type(Variant::Type p_type) {
+ switch (p_type) {
+ case Variant::PACKED_BYTE_ARRAY:
+ case Variant::PACKED_INT32_ARRAY:
+ case Variant::PACKED_INT64_ARRAY:
+ return Variant::INT;
+ case Variant::PACKED_FLOAT32_ARRAY:
+ case Variant::PACKED_FLOAT64_ARRAY:
+ return Variant::FLOAT;
+ case Variant::PACKED_STRING_ARRAY:
+ return Variant::STRING;
+ case Variant::PACKED_VECTOR2_ARRAY:
+ return Variant::VECTOR2;
+ case Variant::PACKED_VECTOR3_ARRAY:
+ return Variant::VECTOR3;
+ case Variant::PACKED_COLOR_ARRAY:
+ return Variant::COLOR;
+ default:
+ return Variant::NIL;
+ }
+}
+
+bool GDScriptParser::DataType::is_typed_container_type() const {
+ return kind == GDScriptParser::DataType::BUILTIN && _variant_type_to_typed_array_element_type(builtin_type) != Variant::NIL;
+}
+
+GDScriptParser::DataType GDScriptParser::DataType::get_typed_container_type() const {
+ GDScriptParser::DataType type;
+ type.kind = GDScriptParser::DataType::BUILTIN;
+ type.builtin_type = _variant_type_to_typed_array_element_type(builtin_type);
+ return type;
+}
+
/*---------- PRETTY PRINT FOR DEBUG ----------*/
#ifdef DEBUG_ENABLED
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