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Merge pull request #94352 from Chaosus/shader_ternary_fix

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Fix multiple ternary expressions to be used without parenthesis
This commit is contained in:
Rémi Verschelde 2024-08-28 00:12:07 +02:00
commit 10a92287c6
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GPG Key ID: C3336907360768E1
2 changed files with 44 additions and 5 deletions
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39
servers/rendering/shader_language.cpp
View File

@ -5196,7 +5196,7 @@ ShaderLanguage::Node *ShaderLanguage::_parse_array_constructor(BlockNode *p_bloc
return an;
}
ShaderLanguage::Node *ShaderLanguage::_parse_expression(BlockNode *p_block, const FunctionInfo &p_function_info) {
ShaderLanguage::Node *ShaderLanguage::_parse_expression(BlockNode *p_block, const FunctionInfo &p_function_info, const ExpressionInfo *p_previous_expression_info) {
Vector<Expression> expression;
//Vector<TokenType> operators;
@ -6551,6 +6551,10 @@ ShaderLanguage::Node *ShaderLanguage::_parse_expression(BlockNode *p_block, cons
pos = _get_tkpos();
tk = _get_token();
if (p_previous_expression_info != nullptr && tk.type == p_previous_expression_info->tt_break && !p_previous_expression_info->is_last_expr) {
break;
}
if (is_token_operator(tk.type)) {
Expression o;
o.is_op = true;
@ -6657,6 +6661,31 @@ ShaderLanguage::Node *ShaderLanguage::_parse_expression(BlockNode *p_block, cons
expression.push_back(o);
if (o.op == OP_SELECT_IF) {
ExpressionInfo info;
info.expression = &expression;
info.tt_break = TK_COLON;
expr = _parse_and_reduce_expression(p_block, p_function_info, &info);
if (!expr) {
return nullptr;
}
expression.push_back({ true, { OP_SELECT_ELSE } });
if (p_previous_expression_info != nullptr) {
info.is_last_expr = p_previous_expression_info->is_last_expr;
} else {
info.is_last_expr = true;
}
expr = _parse_and_reduce_expression(p_block, p_function_info, &info);
if (!expr) {
return nullptr;
}
break;
}
} else {
_set_tkpos(pos); //something else, so rollback and end
break;
@ -6969,6 +6998,10 @@ ShaderLanguage::Node *ShaderLanguage::_parse_expression(BlockNode *p_block, cons
}
}
if (p_previous_expression_info != nullptr) {
p_previous_expression_info->expression->push_back(expression[0]);
}
return expression[0].node;
}
@ -7081,8 +7114,8 @@ ShaderLanguage::Node *ShaderLanguage::_reduce_expression(BlockNode *p_block, Sha
return p_node;
}
ShaderLanguage::Node *ShaderLanguage::_parse_and_reduce_expression(BlockNode *p_block, const FunctionInfo &p_function_info) {
ShaderLanguage::Node *expr = _parse_expression(p_block, p_function_info);
ShaderLanguage::Node *ShaderLanguage::_parse_and_reduce_expression(BlockNode *p_block, const FunctionInfo &p_function_info, const ExpressionInfo *p_previous_expression_info) {
ShaderLanguage::Node *expr = _parse_expression(p_block, p_function_info, p_previous_expression_info);
if (!expr) { //errored
return nullptr;
}

10
servers/rendering/shader_language.h
View File

@ -747,6 +747,12 @@ public:
};
};
struct ExpressionInfo {
Vector<Expression> *expression = nullptr;
TokenType tt_break = TK_EMPTY;
bool is_last_expr = false;
};
struct VarInfo {
StringName name;
DataType type;
@ -1143,13 +1149,13 @@ private:
bool _check_restricted_func(const StringName &p_name, const StringName &p_current_function) const;
bool _validate_restricted_func(const StringName &p_call_name, const CallInfo *p_func_info, bool p_is_builtin_hint = false);
Node *_parse_expression(BlockNode *p_block, const FunctionInfo &p_function_info);
Node *_parse_expression(BlockNode *p_block, const FunctionInfo &p_function_info, const ExpressionInfo *p_previous_expression_info = nullptr);
Error _parse_array_size(BlockNode *p_block, const FunctionInfo &p_function_info, bool p_forbid_unknown_size, Node **r_size_expression, int *r_array_size, bool *r_unknown_size);
Node *_parse_array_constructor(BlockNode *p_block, const FunctionInfo &p_function_info);
Node *_parse_array_constructor(BlockNode *p_block, const FunctionInfo &p_function_info, DataType p_type, const StringName &p_struct_name, int p_array_size);
ShaderLanguage::Node *_reduce_expression(BlockNode *p_block, ShaderLanguage::Node *p_node);
Node *_parse_and_reduce_expression(BlockNode *p_block, const FunctionInfo &p_function_info);
Node *_parse_and_reduce_expression(BlockNode *p_block, const FunctionInfo &p_function_info, const ExpressionInfo *p_previous_expression_info = nullptr);
Error _parse_block(BlockNode *p_block, const FunctionInfo &p_function_info, bool p_just_one = false, bool p_can_break = false, bool p_can_continue = false);
String _get_shader_type_list(const HashSet<String> &p_shader_types) const;
String _get_qualifier_str(ArgumentQualifier p_qualifier) const;