1 files changed, 68 insertions, 0 deletions
diff --git a/Libraries/LibJS/Parser.h b/Libraries/LibJS/Parser.h
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+++ b/Libraries/LibJS/Parser.h
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+/*
+ * Copyright (c) 2020, Stephan Unverwerth <s.unverwerth@gmx.de>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include "AST.h"
+#include "Lexer.h"
+#include <AK/NonnullOwnPtr.h>
+
+namespace JS {
+class Parser {
+public:
+    explicit Parser(Lexer lexer);
+
+    NonnullOwnPtr<Program> parse_program();
+
+    NonnullOwnPtr<Statement> parse_statement();
+    NonnullOwnPtr<BlockStatement> parse_block_statement();
+    NonnullOwnPtr<ReturnStatement> parse_return_statement();
+    NonnullOwnPtr<FunctionDeclaration> parse_function_declaration();
+    NonnullOwnPtr<VariableDeclaration> parse_variable_declaration();
+
+    NonnullOwnPtr<Expression> parse_expression();
+    NonnullOwnPtr<Expression> parse_primary_expression();
+    NonnullOwnPtr<ObjectExpression> parse_object_expression();
+    NonnullOwnPtr<Expression> parse_secondary_expression(NonnullOwnPtr<Expression>);
+    NonnullOwnPtr<CallExpression> parse_call_expression(NonnullOwnPtr<Expression>);
+
+    bool has_errors() const { return m_has_errors; }
+
+private:
+    bool match_expression() const;
+    bool match_secondary_expression() const;
+    bool match_statement() const;
+    bool match(TokenType type) const;
+    bool done() const;
+    void expected(const char* what);
+    Token consume();
+    Token consume(TokenType type);
+
+    Lexer m_lexer;
+    Token m_current_token;
+    bool m_has_errors = false;
+};
+}