74 lines
2.4 KiB
C
74 lines
2.4 KiB
C
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// Copyright 2017 the Monicelli project authors. All rights reserved.
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// Use of this source code is governed by a GPLv3 license, see LICENSE.txt.
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#ifndef MONICELLI_PARSER_H
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#define MONICELLI_PARSER_H
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#include "ast.h"
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#include "errors.h"
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#include "lexer.h"
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#include "support.h"
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#include <iostream>
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#include <memory>
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#include <vector>
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namespace monicelli {
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class Parser final : public ErrorReportingMixin {
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public:
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Parser(std::istream& input, const std::string& source_filename)
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: ErrorReportingMixin(source_filename), lexer_{input} {}
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std::unique_ptr<Module> parse() {
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current_token_ = lexer_.getNextToken();
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return parseModule();
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}
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void setLexerTrace(bool enabled) { lexer_.setTraceEnabled(enabled); }
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private:
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Variable parseVariable();
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VarType parseType();
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std::unique_ptr<Module> parseModule();
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std::unique_ptr<Function> parseFunction();
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std::unique_ptr<Function> parseEntryPoint();
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std::unique_ptr<Statement> parseStatement();
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std::vector<std::unique_ptr<Statement>> parseStatements();
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std::unique_ptr<Statement> maybeParseStatement();
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std::unique_ptr<AssertStatement> parseAssertStatement();
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std::unique_ptr<InputStatement> parseInputStatement();
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std::unique_ptr<AbortStatement> parseAbortStatement();
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BranchCase parseBranchCase(std::shared_ptr<Expression> condition_lhs);
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std::unique_ptr<BranchElse> parseBranchElse();
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std::unique_ptr<BranchStatement> parseBranchStatement();
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std::unique_ptr<VardeclStatement> parseVardeclStatement();
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std::unique_ptr<LoopStatement> parseLoopStatement();
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std::unique_ptr<ReturnStatement> parseReturnStatement();
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std::unique_ptr<Expression> parseExpression();
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std::unique_ptr<Expression> parseSemiExpression(std::shared_ptr<Expression> lhs);
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std::unique_ptr<Expression> maybeParseExpression() { return maybeParseExpressionInternal(0); }
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std::unique_ptr<Expression> maybeParseExpressionInternal(int min_precedence);
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std::unique_ptr<Expression> maybeParseAtomicExpression();
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std::unique_ptr<FunctionCallExpression> parseFunctionCallExpression();
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std::unique_ptr<Token> getNextToken();
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Token* peekNextToken() {
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assert(current_token_ && "Cannot peek into an empty stream.");
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return current_token_.get();
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}
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void ignoreNextToken() {
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auto token = getNextToken();
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USE(token);
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}
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Lexer lexer_;
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std::unique_ptr<Token> current_token_;
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};
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} // namespace monicelli
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#endif
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