{"id":24327772,"url":"https://github.com/ewdlop/compilernotes","last_synced_at":"2025-10-18T13:32:15.905Z","repository":{"id":270014454,"uuid":"889714428","full_name":"ewdlop/CompilerNotes","owner":"ewdlop","description":null,"archived":false,"fork":false,"pushed_at":"2025-03-04T05:49:24.000Z","size":62,"stargazers_count":0,"open_issues_count":3,"forks_count":0,"subscribers_count":1,"default_branch":"main","last_synced_at":"2025-03-04T06:26:00.226Z","etag":null,"topics":["abstract-syntax-tree","bytecode","intermediate-representation","lexer-parser","machine-code","runtime-virtual-machine"],"latest_commit_sha":null,"homepage":"","language":"C#","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/ewdlop.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":"SECURITY.md","support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2024-11-17T03:02:38.000Z","updated_at":"2025-03-04T05:49:28.000Z","dependencies_parsed_at":"2025-03-04T06:33:10.079Z","dependency_job_id":null,"html_url":"https://github.com/ewdlop/CompilerNotes","commit_stats":null,"previous_names":["ewdlop/compilernotes"],"tags_count":0,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/ewdlop%2FCompilerNotes","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/ewdlop%2FCompilerNotes/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/ewdlop%2FCompilerNotes/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/ewdlop%2FCompilerNotes/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/ewdlop","download_url":"https://codeload.github.com/ewdlop/CompilerNotes/tar.gz/refs/heads/main","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":242990328,"owners_count":20217971,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["abstract-syntax-tree","bytecode","intermediate-representation","lexer-parser","machine-code","runtime-virtual-machine"],"created_at":"2025-01-17T22:15:19.426Z","updated_at":"2025-10-18T13:32:10.857Z","avatar_url":"https://github.com/ewdlop.png","language":"C#","funding_links":[],"categories":[],"sub_categories":[],"readme":"# CompilerNotes\n\nhttps://godbolt.org/\n\nhttps://sharplab.io/\n\nhttps://onecompiler.com/\n\nhttps://onecompiler.com/redis\n\n# Minimal Viable Product\n\nSure, I'll break down the necessary steps to set up and run the Haskell parser code using the `parsec` library in different comment blocks:\n\n1. **Set Up Your Haskell Project:**\n\n   First, create a new Haskell project. You can use Stack or Cabal to manage your project.\n\n   **Using Stack:**\n\n   ```sh\n   stack new my-law-parser\n   cd my-law-parser\n   ```\n\n   **Using Cabal:**\n\n   ```sh\n   cabal init --non-interactive\n   cd my-law-parser\n   ```\n\n2. **Add the `parsec` Dependency:**\n\n   Open your project's `.cabal` or `package.yaml` file and add `parsec` to the dependencies.\n\n   **For Cabal:**\n\n   ```cabal\n   build-depends:       base \u003e=4.7 \u0026\u0026 \u003c5, parsec\n   ```\n\n   **For Stack:**\n\n   ```yaml\n   dependencies:\n   - base \u003e= 4.7 \u0026\u0026 \u003c 5\n   - parsec\n   ```\n\n3. **Create Your Haskell Source File:**\n\n   Create a new file named `Main.hs` in the `src` directory (or the project root if you're not using a specific structure).\n\n   ```sh\n   touch src/Main.hs\n   ```\n\n4. **Write the Parser Code:**\n\n   Open `Main.hs` and add the following code to define the parser:\n\n   ```haskell\n   import Text.Parsec\n   import Text.Parsec.String (Parser)\n   import Text.Parsec.Char (digit, letter)\n   import Control.Applicative ((\u003c|\u003e), many)\n\n   -- Define the data types to represent the grammar\n   data Law = Law Section [Section] deriving Show\n   data Section = Section Number ClauseList deriving Show\n   data ClauseList = ClauseList [Clause] deriving Show\n   data Clause = Clause Number Statement deriving Show\n   data Statement = Statement Subject Verb Object (Maybe Conditions) deriving Show\n   data Conditions = Conditions [Condition] deriving Show\n   data Condition = Condition Subject Verb Object deriving Show\n   data Subject = Individual | Entity | Court | ProperNoun String deriving Show\n   data Verb = Shall | Must | May | IsEntitledTo deriving Show\n   data Object = ComplyWith Requirement | Action Action deriving Show\n   data Requirement = TaxPayment | LegalObligations | Regulations deriving Show\n   data Action = PayFine | SubmitReport | AttendHearing deriving Show\n   type Number = String\n\n   -- Parser for Digit\n   digitParser :: Parser Char\n   digitParser = oneOf \"0123456789\"\n\n   -- Parser for Number\n   numberParser :: Parser Number\n   numberParser = many1 digitParser\n\n   -- Parser for ProperNoun\n   properNounParser :: Parser Subject\n   properNounParser = ProperNoun \u003c$\u003e many1 letter\n\n   -- Parser for Subject\n   subjectParser :: Parser Subject\n   subjectParser = (string \"individual\" \u003e\u003e return Individual)\n               \u003c|\u003e (string \"entity\" \u003e\u003e return Entity)\n               \u003c|\u003e (string \"court\" \u003e\u003e return Court)\n               \u003c|\u003e properNounParser\n\n   -- Parser for Verb\n   verbParser :: Parser Verb\n   verbParser = (string \"shall\" \u003e\u003e return Shall)\n             \u003c|\u003e (string \"must\" \u003e\u003e return Must)\n             \u003c|\u003e (string \"may\" \u003e\u003e return May)\n             \u003c|\u003e (string \"is entitled to\" \u003e\u003e return IsEntitledTo)\n\n   -- Parser for Requirement\n   requirementParser :: Parser Requirement\n   requirementParser = (string \"tax payment\" \u003e\u003e return TaxPayment)\n                   \u003c|\u003e (string \"legal obligations\" \u003e\u003e return LegalObligations)\n                   \u003c|\u003e (string \"regulations\" \u003e\u003e return Regulations)\n\n   -- Parser for Action\n   actionParser :: Parser Action\n   actionParser = (string \"pay fine\" \u003e\u003e return PayFine)\n              \u003c|\u003e (string \"submit report\" \u003e\u003e return SubmitReport)\n              \u003c|\u003e (string \"attend hearing\" \u003e\u003e return AttendHearing)\n\n   -- Parser for Object\n   objectParser :: Parser Object\n   objectParser = (string \"comply with\" \u003e\u003e spaces \u003e\u003e ComplyWith \u003c$\u003e requirementParser)\n              \u003c|\u003e (Action \u003c$\u003e actionParser)\n\n   -- Parser for Condition\n   conditionParser :: Parser Condition\n   conditionParser = Condition \u003c$\u003e (subjectParser \u003c* spaces) \u003c*\u003e (verbParser \u003c* spaces) \u003c*\u003e objectParser\n\n   -- Parser for ConditionList\n   conditionListParser :: Parser [Condition]\n   conditionListParser = sepBy1 conditionParser (spaces \u003e\u003e string \"and\" \u003e\u003e spaces)\n\n   -- Parser for Conditions\n   conditionsParser :: Parser Conditions\n   conditionsParser = (string \"if\" \u003e\u003e spaces \u003e\u003e Conditions \u003c$\u003e conditionListParser) \u003c|\u003e return (Conditions [])\n\n   -- Parser for Statement\n   statementParser :: Parser Statement\n   statementParser = Statement \u003c$\u003e (subjectParser \u003c* spaces) \u003c*\u003e (verbParser \u003c* spaces) \u003c*\u003e (objectParser \u003c* spaces) \u003c*\u003e optionMaybe conditionsParser\n\n   -- Parser for Clause\n   clauseParser :: Parser Clause\n   clauseParser = Clause \u003c$\u003e (string \"Clause\" \u003e\u003e spaces \u003e\u003e numberParser \u003c* string \":\") \u003c*\u003e (spaces \u003e\u003e statementParser)\n\n   -- Parser for ClauseList\n   clauseListParser :: Parser ClauseList\n   clauseListParser = ClauseList \u003c$\u003e many1 (clauseParser \u003c* spaces)\n\n   -- Parser for Section\n   sectionParser :: Parser Section\n   sectionParser = Section \u003c$\u003e (string \"Section\" \u003e\u003e spaces \u003e\u003e numberParser \u003c* string \":\") \u003c*\u003e (spaces \u003e\u003e clauseListParser)\n\n   -- Parser for Law\n   lawParser :: Parser Law\n   lawParser = Law \u003c$\u003e sectionParser \u003c*\u003e many sectionParser\n\n   -- Main function for testing the parser\n   main :: IO ()\n   main = do\n       let input = \"Section 1: Clause 1: individual shall comply with tax payment if individual must comply with legal obligations and entity may comply with regulations Section 2: Clause 2: entity may submit report\"\n       case parse lawParser \"\" input of\n           Left err -\u003e print err\n           Right result -\u003e print result\n   ```\n\n5. **Build and Run the Project:**\n\n   **Using Stack:**\n\n   ```sh\n   stack build\n   stack exec my-law-parser-exe\n   ```\n\n   **Using Cabal:**\n\n   ```sh\n   cabal build\n   cabal run\n   ```\n\nThese steps will set up a Haskell project, add the necessary dependencies, write the parser code, and run the project to test the parser.\n\n# For Reader\n\nA compiler is a software tool that translates code written in a high-level programming language (such as C, C++, or Java) into machine language (binary code) that a computer's CPU can execute. The compilation process involves several stages, each transforming the code closer to its final executable form. Here's an overview of the typical stages in a compiler chain:\n\n1. **Lexical Analysis (Scanning):**\n   - The source code is converted into a stream of tokens. Tokens are the basic building blocks of a program, such as keywords, operators, identifiers, and literals.\n   - This stage is handled by a component called the lexer or scanner.\n\n2. **Syntax Analysis (Parsing):**\n   - The stream of tokens is analyzed according to the grammatical rules of the programming language to produce a syntax tree (also known as an abstract syntax tree or AST).\n   - This stage is handled by a component called the parser.\n\n3. **Semantic Analysis:**\n   - The syntax tree is checked for semantic errors, such as type mismatches, undeclared variables, and scope violations.\n   - The compiler may also perform other checks, such as ensuring that function calls have the correct number of arguments.\n\n4. **Intermediate Code Generation:**\n   - The validated syntax tree is transformed into an intermediate representation (IR), which is a lower-level code that is easier to optimize and translate into machine code.\n   - The IR is often platform-independent, allowing the same front-end to be used for different target architectures.\n\n5. **Optimization:**\n   - The intermediate code undergoes various optimization techniques to improve performance and reduce resource consumption.\n   - Optimizations can include removing redundant code, inlining functions, and loop unrolling.\n\n6. **Code Generation:**\n   - The optimized intermediate code is translated into target-specific machine code (assembly language).\n   - This stage involves mapping high-level constructs to the specific instructions of the target CPU architecture.\n\n7. **Assembly and Linking:**\n   - The generated assembly code is assembled into object code (binary format).\n   - The object code is then linked with other object files and libraries to produce the final executable file.\n   - The linker resolves references between different code modules and includes necessary runtime libraries.\n\nHere's a simplified illustration of the compiler chain:\n\n```\n```\n\n## For Visual Learner\n\nSource Code (High-Level Language)  \n\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;|  \n\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;V  \nLexical Analysis (Scanner)  \n\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;|  \n\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;V  \nSyntax Analysis (Parser)  \n\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;|  \n\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;V  \nSemantic Analysis  \n\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;|  \n\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;V  \nIntermediate Code Generation  \n\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;|  \n\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;V  \nOptimization  \n\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;|  \n\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;V  \nCode Generation (Assembly)  \n\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;|  \n\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;V  \nAssembly and Linking  \n\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;|  \n\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;V  \nExecutable (Machine Code)\n\n```\n\nEach stage of the compiler chain plays a crucial role in transforming human-readable code into a form that a CPU can execute efficiently. Different compilers may implement these stages in various ways, and some stages may be combined or split further depending on the compiler's design.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fewdlop%2Fcompilernotes","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fewdlop%2Fcompilernotes","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fewdlop%2Fcompilernotes/lists"}