blob: 9eebeda7c384e4d304cd94ee51e5ee96d1f00a08 [file] [log] [blame]
* Copyright 2021 Google LLC
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#include "include/core/SkStringView.h"
#include "include/private/SkSLString.h"
#include "include/sksl/DSLExpression.h"
#include <memory>
namespace SkSL {
class SymbolTable;
namespace dsl {
class DSLVar;
// This header provides methods for manually managing symbol tables in DSL code. They should not be
// used by normal hand-written DSL code, where we rely on C++ to manage symbols, but are instead
// needed when DSL objects are being constructed programmatically (as in DSLParser).
* Pushes a new symbol table onto the symbol table stack.
void PushSymbolTable();
* Pops the top symbol table from the stack. As symbol tables are shared pointers, this will only
* destroy the symbol table if it was never attached to anything (e.g. passed into a Block
* constructor).
void PopSymbolTable();
* Returns the current symbol table. Outside of SkSL itself, this is an opaque pointer, used only
* for passing it to DSL methods that require it.
std::shared_ptr<SymbolTable> CurrentSymbolTable();
* Returns an expression referring to the named symbol.
DSLPossibleExpression Symbol(skstd::string_view name, PositionInfo pos = PositionInfo::Capture());
* Returns true if the name refers to a type (user or built-in) in the current symbol table.
bool IsType(skstd::string_view name);
* Returns true if the name refers to a builtin type.
bool IsBuiltinType(skstd::string_view name);
* Adds a variable to the current symbol table.
void AddToSymbolTable(DSLVarBase& var, PositionInfo pos = PositionInfo::Capture());
} // namespace dsl
} // namespace SkSL