Press n or j to go to the next uncovered block, b, p or k for the previous block.
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import * as Expressions from "./expressions"; import * as Tokens from "../1_lexer/tokens"; import {Version} from "../../version"; import {IFile} from "../../files/_ifile"; import {TokenNode, StatementNode} from "../nodes"; import {ArtifactsABAP} from "../artifacts"; import {Combi} from "./combi"; import {Unknown, Empty, Comment, NativeSQL, IStatement} from "./statements/_statement"; import {IStatementResult} from "./statement_result"; import {Token} from "../1_lexer/tokens/_token"; import {IABAPLexerResult} from "../1_lexer/lexer_result"; import {ExpandMacros} from "./expand_macros"; import {Pragma} from "../1_lexer/tokens"; import {IRegistry} from "../../_iregistry"; import {IStatementRunnable} from "./statement_runnable"; export const STATEMENT_MAX_TOKENS = 1000; class StatementMap { // this also serves as container for statement matcher singletons, private readonly map: {[index: string]: {statement: IStatement, matcher?: IStatementRunnable}[]}; public constructor() { this.map = {}; for (const stat of ArtifactsABAP.getStatements()) { const f = stat.getMatcher().first(); if (f.length === 0) { throw new Error("StatementMap, first must have contents"); } for (const first of f) { if (this.map[first]) { this.map[first].push({statement: stat}); } else { this.map[first] = [{statement: stat}]; } } } } public lookup(str: string): readonly {statement: IStatement, matcher: IStatementRunnable}[] { const res = this.map[str.toUpperCase()]; if (res === undefined) { return []; } if (res[0].matcher === undefined) { for (const r of res) { r.matcher = r.statement.getMatcher(); } } return res as readonly {statement: IStatement, matcher: IStatementRunnable}[]; } } class WorkArea { private readonly file: IFile; public readonly tokens: readonly Token[]; public statements: StatementNode[]; public constructor(file: IFile, tokens: readonly Token[]) { this.file = file; this.tokens = tokens; this.statements = []; } public addUnknown(pre: Token[], post: Token[], colon: Token | undefined) { const st = new StatementNode(new Unknown(), colon); st.setChildren(this.tokensToNodes(pre, post)); this.statements.push(st); } public toResult(): IStatementResult { return {file: this.file, tokens: this.tokens, statements: this.statements}; } private tokensToNodes(tokens1: Token[], tokens2: Token[]): TokenNode[] { const ret: TokenNode[] = []; for (const t of tokens1) { ret.push(new TokenNode(t)); } for (const t of tokens2) { ret.push(new TokenNode(t)); } return ret; } } export class StatementParser { private static map: StatementMap; private readonly version: Version; private readonly reg?: IRegistry; public constructor(version: Version, reg?: IRegistry) { if (!StatementParser.map) { StatementParser.map = new StatementMap(); } this.version = version; this.reg = reg; } /** input is one full object */ public run(input: readonly IABAPLexerResult[], globalMacros: readonly string[]): IStatementResult[] { const macros = new ExpandMacros(globalMacros, this.version, this.reg); const wa = input.map(i => new WorkArea(i.file, i.tokens)); for (const w of wa) { this.process(w); this.categorize(w); macros.find(w.statements); } for (const w of wa) { const res = macros.handleMacros(w.statements); w.statements = res.statements; if (res.containsUnknown === true) { this.lazyUnknown(w); } this.nativeSQL(w); } return wa.map(w => w.toResult()); } // todo, refactor, remove method here and only have in WorkArea class private tokensToNodes(tokens: readonly Token[]): TokenNode[] { const ret: TokenNode[] = []; for (const t of tokens) { ret.push(new TokenNode(t)); } return ret; } // tries to split Unknown statements by newlines, when adding/writing a new statement // in an editor, adding the statement terminator is typically the last thing to do // note: this will not work if the second statement is a macro call, guess this is okay private lazyUnknown(wa: WorkArea) { const result: StatementNode[] = []; for (let statement of wa.statements) { // dont use CALL METHOD, when executing lazy, it easily gives a Move for the last statment if lazy logic is evaluated if (statement.get() instanceof Unknown) { const concat = statement.concatTokens().toUpperCase(); if (concat.startsWith("CALL METHOD ") === false && concat.startsWith("RAISE EXCEPTION TYPE ") === false && concat.startsWith("READ TABLE ") === false && concat.startsWith("LOOP AT ") === false && concat.startsWith("CALL FUNCTION ") === false) { for (const {first, second} of this.buildSplits(statement.getTokens())) { if (second.length === 1) { continue; // probably punctuation } const s = this.categorizeStatement(new StatementNode(new Unknown()).setChildren(this.tokensToNodes(second))); if (!(s.get() instanceof Unknown)) { result.push(new StatementNode(new Unknown()).setChildren(this.tokensToNodes(first))); statement = s; break; } } } } result.push(statement); } wa.statements = result; } private buildSplits(tokens: readonly Token[]): {first: Token[], second: Token[]}[] { const res: {first: Token[], second: Token[]}[] = []; const before: Token[] = []; let prevRow = tokens[0].getRow(); for (let i = 0; i < tokens.length; i++) { if (tokens[i].getRow() !== prevRow) { res.push({first: [...before], second: [...tokens].splice(i)}); } prevRow = tokens[i].getRow(); before.push(tokens[i]); } return res; } private nativeSQL(wa: WorkArea) { let sql = false; for (let i = 0; i < wa.statements.length; i++) { const statement = wa.statements[i]; const type = statement.get(); if (type instanceof Statements.ExecSQL || (type instanceof Statements.MethodImplementation && statement.findDirectExpression(Expressions.Language))) { sql = true; } else if (sql === true) { if (type instanceof Statements.EndExec || type instanceof Statements.EndMethod) { sql = false; } else if (!(type instanceof Comment)) { wa.statements[i] = new StatementNode(new NativeSQL()).setChildren(this.tokensToNodes(statement.getTokens())); } } } } // for each statement, run statement matchers to figure out which kind of statement it is private categorize(wa: WorkArea) { const result: StatementNode[] = []; for (const statement of wa.statements) { result.push(this.categorizeStatement(statement)); } wa.statements = result; } private categorizeStatement(input: StatementNode) { let statement = input; const length = input.getChildren().length; const lastToken = input.getLastToken(); const isPunctuation = lastToken instanceof Tokens.Punctuation; if (length === 1 && isPunctuation) { const tokens = statement.getTokens(); statement = new StatementNode(new Empty()).setChildren(this.tokensToNodes(tokens)); } else if (statement.get() instanceof Unknown) { if (isPunctuation) { statement = this.match(statement); } else if (length > STATEMENT_MAX_TOKENS) { // if the statement contains more than STATEMENT_MAX_TOKENS tokens, just give up statement = input; } else if (length === 1 && lastToken instanceof Pragma) { statement = new StatementNode(new Empty(), undefined, [lastToken]); } } return statement; } private removePragma(tokens: readonly Token[]): {tokens: Token[], pragmas: Token[]} { const result: Token[] = []; const pragmas: Token[] = []; // skip the last token as it is the punctuation for (let i = 0; i < tokens.length - 1; i++) { const t = tokens[i]; if (t instanceof Tokens.Pragma) { pragmas.push(t); } else { result.push(t); } } return {tokens: result, pragmas: pragmas}; } private match(statement: StatementNode): StatementNode { const tokens = statement.getTokens(); const {tokens: filtered, pragmas} = this.removePragma(tokens); if (filtered.length === 0) { return new StatementNode(new Empty()).setChildren(this.tokensToNodes(tokens)); } for (const st of StatementParser.map.lookup(filtered[0].getStr())) { const match = Combi.run(st.matcher, filtered, this.version); if (match) { const last = tokens[tokens.length - 1]; match.push(new TokenNode(last)); return new StatementNode(st.statement, statement.getColon(), pragmas).setChildren(match); } } // next try the statements without specific keywords for (const st of StatementParser.map.lookup("")) { const match = Combi.run(st.matcher, filtered, this.version); if (match) { const last = tokens[tokens.length - 1]; match.push(new TokenNode(last)); return new StatementNode(st.statement, statement.getColon(), pragmas).setChildren(match); } } return statement; } // takes care of splitting tokens into statements, also handles chained statements // statements are split by "," or "." // additional colons/chaining after the first colon are ignored private process(wa: WorkArea) { let add: Token[] = []; let pre: Token[] = []; let colon: Token | undefined = undefined; for (const token of wa.tokens) { if (token instanceof Tokens.Comment) { wa.statements.push(new StatementNode(new Comment()).setChildren(this.tokensToNodes([token]))); continue; } add.push(token); const str = token.getStr(); if (str.length === 1) { if (str === ".") { wa.addUnknown(pre, add, colon); add = []; pre = []; colon = undefined; } else if (str === "," && pre.length > 0) { wa.addUnknown(pre, add, colon); add = []; } else if (str === ":" && colon === undefined) { colon = token; add.pop(); // do not add colon token to statement pre.push(...add); add = []; } else if (str === ":") { add.pop(); // do not add colon token to statement } } } if (add.length > 0) { wa.addUnknown(pre, add, colon); } } } |