X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fglsl%2Fparser.h;fp=source%2Fglsl%2Fparser.h;h=c9588bfbdd99486a0e759df55ebd7c520ebeefb0;hb=c1b0303f65ee966a973197cbdbf177c571478674;hp=0000000000000000000000000000000000000000;hpb=7aaec9a70b8d7733429bec043f8e33e02956f266;p=libs%2Fgl.git

diff --git a/source/glsl/parser.h b/source/glsl/parser.h
new file mode 100644
index 00000000..c9588bfb
--- /dev/null
+++ b/source/glsl/parser.h
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+#ifndef MSP_GL_SL_PARSER_H_
+#define MSP_GL_SL_PARSER_H_
+
+#include <deque>
+#include <map>
+#include <set>
+#include <string>
+#include <msp/io/base.h>
+#include "syntax.h"
+
+namespace Msp {
+namespace GL {
+namespace SL {
+
+class Parser
+{
+private:
+	enum OperatorType
+	{
+		NO_OPERATOR,
+		BINARY,
+		PREFIX,
+		POSTFIX
+	};
+
+	enum Associativity
+	{
+		LEFT_TO_RIGHT,
+		RIGHT_TO_LEFT
+	};
+
+	struct Operator
+	{
+		const char token[4];
+		unsigned precedence;
+		OperatorType type;
+		Associativity assoc;
+	};
+
+	std::string source;
+	std::string source_name;
+	unsigned source_index;
+	unsigned current_line;
+	std::string::const_iterator iter;
+	std::string::const_iterator source_end;
+	bool allow_preprocess;
+	bool allow_stage_change;
+	std::string last_token;
+	std::deque<std::string> next_tokens;
+	Module *module;
+	Stage *cur_stage;
+	std::set<std::string> declared_types;
+
+	static Operator operators[];
+
+public:
+	Parser();
+	~Parser();
+
+	Module &parse(const std::string &, const std::string &, unsigned = 0);
+	Module &parse(IO::Base &, const std::string &, unsigned = 0);
+
+private:
+	void parse_source();
+
+	std::string format_error(const std::string &);
+	std::string format_syntax_error(const std::string &);
+
+	const std::string &peek_token(unsigned = 0);
+	const std::string &parse_token();
+	std::string parse_token_();
+	std::string parse_identifier();
+	std::string parse_number();
+	std::string parse_other();
+	void 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_interpolation_qualifier(const std::string &);
+	static bool is_precision_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 &);
+	bool is_identifier(const std::string &);
+
+	void preprocess();
+	void preprocess_version();
+	void preprocess_pragma();
+	void preprocess_pragma_msp();
+	void preprocess_stage();
+
+	RefPtr<Statement> parse_global_declaration();
+	RefPtr<Statement> parse_statement();
+	RefPtr<Import> parse_import();
+	RefPtr<Precision> parse_precision();
+	RefPtr<Layout> parse_layout();
+	void parse_block(Block &, bool);
+	RefPtr<Expression> parse_expression(unsigned = 0);
+	RefPtr<BinaryExpression> parse_binary(const RefPtr<Expression> &, const Operator *);
+	RefPtr<FunctionCall> parse_function_call(const VariableReference &);
+	RefPtr<StructDeclaration> parse_struct_declaration();
+	RefPtr<VariableDeclaration> parse_variable_declaration();
+	RefPtr<FunctionDeclaration> parse_function_declaration();
+	RefPtr<InterfaceBlock> parse_interface_block();
+	RefPtr<Conditional> parse_conditional();
+	RefPtr<Iteration> parse_for();
+	RefPtr<Iteration> parse_while();
+	RefPtr<Passthrough> parse_passthrough();
+	RefPtr<Return> parse_return();
+};
+
+} // namespace SL
+} // namespace GL
+} // namespace Msp
+
+#endif