Begin implementing a new shader program generator system

[libs/gl.git] / source / programparser.h

diff --git a/source/programparser.h b/source/programparser.h
new file mode 100644 (file)
index 0000000..0a91c50
--- /dev/null
+++ b/source/programparser.h
@@ -0,0 +1,65 @@
+#ifndef MSP_GL_PROGRAMPARSER_H_
+#define MSP_GL_PROGRAMPARSER_H_
+
+#include <deque>
+#include <map>
+#include <string>
+#include <msp/io/base.h>
+#include "programsyntax.h"
+
+namespace Msp {
+namespace GL {
+
+class ProgramParser
+{
+private:
+       std::string source;
+       std::string::const_iterator iter;
+       std::deque<std::string> next_tokens;
+       ProgramSyntax::Module main_module;
+       ProgramSyntax::Module *cur_module;
+
+public:
+       ProgramSyntax::Module &parse(const std::string &);
+       ProgramSyntax::Module &parse(IO::Base &);
+
+private:
+       void parse_source(ProgramSyntax::Module &);
+
+       const std::string &peek_token(unsigned = 0);
+       std::string parse_token();
+       std::string parse_token_();
+       std::string parse_identifier();
+       std::string parse_number();
+       std::string parse_other();
+       bool skip_comment_and_whitespace();
+       void expect(const std::string &);
+       std::string expect_type();
+       std::string expect_identifier();
+       bool check(const std::string &);
+
+       static bool is_interface_qualifier(const std::string &);
+       static bool is_sampling_qualifier(const std::string &);
+       static bool is_qualifier(const std::string &);
+       static bool is_builtin_type(const std::string &);
+       bool is_type(const std::string &);
+
+       ProgramSyntax::Node *parse_global_declaration();
+       ProgramSyntax::Node *parse_statement();
+       ProgramSyntax::Layout *parse_layout();
+       void parse_block(ProgramSyntax::Block &, bool);
+       void parse_expression(ProgramSyntax::Expression &);
+       ProgramSyntax::StructDeclaration *parse_struct_declaration();
+       ProgramSyntax::VariableDeclaration *parse_variable_declaration();
+       ProgramSyntax::FunctionDeclaration *parse_function_declaration();
+       void parse_function_parameter_list(ProgramSyntax::FunctionDeclaration &);
+       ProgramSyntax::InterfaceBlock *parse_interface_block();
+       ProgramSyntax::Conditional *parse_conditional();
+       ProgramSyntax::Iteration *parse_iteration();
+       ProgramSyntax::Return *parse_return();
+};
+
+} // namespace GL
+} // namespace Msp
+
+#endif