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Add static type checks in the parser

- Resolve types for all identifiers.
- Error when identifier is not found.
- Match return type and error when not returning a value when it should.
- Check unreachable code (code after sure return).
- Match argument count and types for function calls.
- Determine if return type of function call matches the assignment.
- Do static type check with match statement when possible.
- Use type hints to determine export type.
- Check compatibility between type hint and explicit export type.
This commit is contained in:
George Marques
2018-05-29 23:16:54 -03:00
parent f7793fc5c9
commit 743053734f
9 changed files with 2984 additions and 286 deletions

View File

@@ -1236,15 +1236,11 @@ static bool _guess_identifier_type(GDScriptCompletionContext &context, int p_lin
}
//guess type in constant
if (context._class->constant_expressions.has(p_identifier)) {
for (int i = 0; i < context._class->constant_expressions.size(); i++) {
if (context._class->constant_expressions[i].identifier == p_identifier) {
ERR_FAIL_COND_V(context._class->constant_expressions[i].expression->type != GDScriptParser::Node::TYPE_CONSTANT, false);
r_type = _get_type_from_variant(static_cast<const GDScriptParser::ConstantNode *>(context._class->constant_expressions[i].expression)->value);
return true;
}
ERR_FAIL_COND_V(context._class->constant_expressions[p_identifier].expression->type != GDScriptParser::Node::TYPE_CONSTANT, false);
r_type = _get_type_from_variant(static_cast<const GDScriptParser::ConstantNode *>(context._class->constant_expressions[p_identifier].expression)->value);
return true;
}
if (!(context.function && context.function->_static)) {
@@ -1372,8 +1368,8 @@ static void _find_identifiers_in_class(GDScriptCompletionContext &context, bool
}
if (!p_only_functions) {
for (int i = 0; i < context._class->constant_expressions.size(); i++) {
result.insert(context._class->constant_expressions[i].identifier);
for (Map<StringName, GDScriptParser::ClassNode::Constant>::Element *E = context._class->constant_expressions.front(); E; E = E->next()) {
result.insert(E->key());
}
for (int i = 0; i < context._class->subclasses.size(); i++) {
@@ -2320,9 +2316,8 @@ Error GDScriptLanguage::complete_code(const String &p_code, const String &p_base
options.insert(String(cl->variables[i].identifier));
}
for (int i = 0; i < cl->constant_expressions.size(); i++) {
options.insert(String(cl->constant_expressions[i].identifier));
for (Map<StringName, GDScriptParser::ClassNode::Constant>::Element *E = cl->constant_expressions.front(); E; E = E->next()) {
options.insert(String(E->key()));
}
}
@@ -2816,13 +2811,10 @@ Error GDScriptLanguage::lookup_code(const String &p_code, const String &p_symbol
//guess in class constants
for (int i = 0; i < context._class->constant_expressions.size(); i++) {
if (context._class->constant_expressions[i].identifier == p_symbol) {
r_result.type = ScriptLanguage::LookupResult::RESULT_SCRIPT_LOCATION;
r_result.location = context._class->constant_expressions[i].expression->line;
return OK;
}
if (context._class->constant_expressions.has(p_symbol)) {
r_result.type = ScriptLanguage::LookupResult::RESULT_SCRIPT_LOCATION;
r_result.location = context._class->constant_expressions[p_symbol].expression->line;
return OK;
}
//guess in class variables