basic parser built

2023-10-10 22:15:02 +08:00 · 2023-10-10 22:15:02 +08:00 · df1419e45c
commit df1419e45c
parent 8d03cc503c
3 changed files with 248 additions and 38 deletions
--- a/README.md
+++ b/README.md
@ -24,4 +24,5 @@ License: MIT
 - 20230928：basically fix `issue1`。其他ê物件猶著做。
 - 20230929：add multi args parsing for `callee`.
 - 20230930：tîng khí parser, using `js-token`.
- - 20231016: tîng siá parser, using `ts-parsec`.
+ - 20231006: tîng siá parser, using `ts-parsec`.
+ - 20231010: 初步完成tsit ê階段ê Parser`。
--- a/src/index.js
+++ b/src/index.js
@ -62,43 +62,65 @@ var TokenKind;
    TokenKind[TokenKind["Number"] = 2] = "Number";
    TokenKind[TokenKind["Op"] = 3] = "Op";
    TokenKind[TokenKind["ExprMark"] = 4] = "ExprMark";
-    TokenKind[TokenKind["Paren"] = 5] = "Paren";
-    TokenKind[TokenKind["SpaceNL"] = 6] = "SpaceNL";
-    TokenKind[TokenKind["Id"] = 7] = "Id";
-    TokenKind[TokenKind["Str"] = 8] = "Str";
+    TokenKind[TokenKind["ExcapeAt"] = 5] = "ExcapeAt";
+    TokenKind[TokenKind["Paren"] = 6] = "Paren";
+    TokenKind[TokenKind["SpaceNL"] = 7] = "SpaceNL";
+    TokenKind[TokenKind["Id"] = 8] = "Id";
+    TokenKind[TokenKind["Str"] = 9] = "Str";
+    TokenKind[TokenKind["Comment"] = 10] = "Comment";
 })(TokenKind || (TokenKind = {}));
 /**
 * Parsing
 */
 const lexer = p.buildLexer([
    [true, /^\d+(\.\d+)?/g, TokenKind.Number],
+    [true, /^\\\@/g, TokenKind.ExcapeAt],
+    [true, /^\/\*([^/]|\/[^*])*\*\//g, TokenKind.Comment],
    [true, /^\;/g, TokenKind.Semicolon],
    [true, /^[-][-][-]/g, TokenKind.Seperator],
    [true, /^[\+\-\*\/\&\|\!\^\<\>\~\=\?]+/g, TokenKind.Op],
-    [true, /^\@+/g, TokenKind.ExprMark],
+    [true, /^\@/g, TokenKind.ExprMark],
    [true, /^[()\[\]{}]/g, TokenKind.Paren],
    [true, /^["]([\"]|[\\].)*["]/g, TokenKind.Str],
    [true, /^[']([\']|[\\].)*[']/g, TokenKind.Str],
    [true, /^[()\[\]{}]/g, TokenKind.Paren],
-    [true, /^[^\s\n\t\r;]+/g, TokenKind.Id],
-    [false, /^(\s|\n|\r|\t)+/g, TokenKind.SpaceNL]
+    [true, /^[^\/\\\@\s\n\t\r;]+/g, TokenKind.Id],
+    [true, /^(\s|\n|\r|\t)+/g, TokenKind.SpaceNL],
 ]);
 /**
 *
 * # TEST
 */
-const inputTxt = `import ast;
+const inputTxt = `import a as b; /*bacourt*/
+/* ba choir 
+ipsum lorem*/
+
+import you as john;
 ---
-122`;
+
+臺中市\\\@
+
+政府
+@2+2==4;
+
+console.log("122");@
+
+人民
+`;
 const PROG = p.rule();
-const UNIT = p.rule();
+const SEGMENT = p.rule();
+const IMPORT = p.rule();
 const IMPORTS = p.rule();
 const SEMICOLON = p.rule();
+const EXCAPE_AT = p.rule();
+const NOT_AT_TEXT = p.rule();
+const CONTENT = p.rule();
 let doubleMinus = { type: 'Punctuator', value: '--' };
 let doubleMinus2 = p.str('--');
 const TERM = p.rule();
-function applyUnit(value) {
-    return value.text;
+function applySegment(input) {
+    let unpackedInnerExprs = input[1].map((x) => { return x.text; });
+    return ["%exprs", unpackedInnerExprs];
 }
 function applySemiColon(value) {
    return value.text;
@ -106,14 +128,80 @@ function applySemiColon(value) {
 function applyParts(first, second) {
    return ["%clo", first, second[1]];
 }
-PROG.setPattern(p.lrec_sc(IMPORTS, p.seq(p.str('---'), UNIT), applyParts));
-function applyImports(input) {
+function applyComment(value) {
+    return [value.text];
+}
+function applyImport(input) {
    let importTail = input[1].map(x => x.text);
    return ["import"].concat(importTail);
 }
 ;
-IMPORTS.setPattern(p.apply(p.seq(p.str('import'), p.rep_sc(p.tok(TokenKind.Id)), SEMICOLON), applyImports));
+/*
+function applyImportComment(input: [Token<TokenKind>,Token<TokenKind>[],
+    tkTree, Token<TokenKind.Comment>]) : tkTree{
+    let importTail = input[1].map(x=>x.text);
+    let comment = [input[3].text];
+    return ["import"].concat(importTail).concat(comment);
+};*/
+function applyImports(input) {
+    let resultBody = [input[0]].concat(input[1]);
+    let resultWrapper = ["%import", resultBody];
+    return resultWrapper;
+}
+;
+function applyNotAtText(value) {
+    if (value.text == "\\\@") {
+        return '@';
+    }
+    else {
+        return value.text;
+    }
+}
+;
+function applyText(input) {
+    return ["%text", input];
+}
+;
+function applyContent(input) {
+    return ["%content", input];
+}
+;
+function applySpaceNL(value) {
+    return value.text;
+}
+/**
+ * IMPORTEE:  Number, Op, Paren, Id, Str, Comment,
+ */
+let IMPORTEE = p.alt(p.tok(TokenKind.Number), p.tok(TokenKind.Op), p.tok(TokenKind.Paren), p.tok(TokenKind.Id), p.tok(TokenKind.Str), p.tok(TokenKind.SpaceNL), p.tok(TokenKind.Comment));
+let NOT_AT = p.alt(p.tok(TokenKind.Seperator), p.tok(TokenKind.Semicolon), p.tok(TokenKind.Number), p.tok(TokenKind.ExcapeAt), p.tok(TokenKind.Op), p.tok(TokenKind.Paren), p.tok(TokenKind.SpaceNL), p.tok(TokenKind.Id), p.tok(TokenKind.Str), p.tok(TokenKind.Comment));
+/**
+ * PROG : IMPORTS '---' CONTENT;
+ */
+PROG.setPattern(p.lrec_sc(IMPORTS, p.seq(p.str('---'), CONTENT), applyParts));
+/**
+ * NOT_AT_TEXT : NOT_AT
+ */
+NOT_AT_TEXT.setPattern(p.apply(NOT_AT, applyNotAtText));
+IMPORTS.setPattern(p.apply(p.seq(IMPORT, p.rep(IMPORT)), applyImports));
+/**
+ * IMPORT :
+ * 'import' IMPORTEE* SEMICOLON |
+ * COMMENT |
+ */
+IMPORT.setPattern(p.alt(p.apply(p.seq(p.str('import'), p.rep_sc(IMPORTEE), SEMICOLON), applyImport), p.apply(p.tok(TokenKind.Comment), applyComment), p.apply(p.tok(TokenKind.SpaceNL), applySpaceNL)));
+/**
+ * SEMICOLON : ';';
+ */
 SEMICOLON.setPattern(p.apply(p.tok(TokenKind.Semicolon), applySemiColon));
-UNIT.setPattern(p.apply(p.tok(TokenKind.Number), applyUnit));
+/**
+ * SEGMENT : '@' NOT_AT* '@' |
+ * (NOT_AT_TEXT | EXCAPE_AT)*
+ */
+SEGMENT.setPattern(p.alt(p.apply(p.rep_sc(NOT_AT_TEXT), applyText), p.apply(p.seq(p.str('@'), p.rep(NOT_AT), p.str('@')), applySegment)));
+/**
+ * CONTENT : SEGMENT*
+ */
+CONTENT.setPattern(p.apply(p.rep(SEGMENT), applyContent));
+console.log(repr(lexer.parse(inputTxt)));
 let tree = p.expectSingleResult(p.expectEOF(PROG.parse(lexer.parse(inputTxt))));
 console.log("RESULT=" + tkTreeToSExp(tree));
--- a/src/index.ts
+++ b/src/index.ts
@ -3,6 +3,7 @@ import jsTokens from "js-tokens";
 import * as util from 'util';
 import * as p from 'typescript-parsec';
 import { Token } from 'typescript-parsec';
+import { TokenType } from "./tokenize";
 /**
 * 
 * # REPRESENTATION
@ -40,15 +41,17 @@ let repr = (x : any)=>{return util.inspect(x, {depth: null})};
 type tkTree = string | tkTree[];

 enum TokenKind {
-    Seperator,
-    Semicolon,
+    Seperator, // ---
+    Semicolon, // ;
    Number,
    Op,
-    ExprMark,
+    ExprMark, // @
+    ExcapeAt, // \@
    Paren,
-    SpaceNL,
+    SpaceNL, // \s\t\n\r
    Id,
    Str,
+    Comment, // /* ooo */
 }

 /**
@ -56,16 +59,19 @@ enum TokenKind {
 */
 const lexer = p.buildLexer([
    [true, /^\d+(\.\d+)?/g, TokenKind.Number],
+    [true, /^\\\@/g, TokenKind.ExcapeAt],
+    [true, /^\/\*([^/]|\/[^*])*\*\//g, TokenKind.Comment],
    [true, /^\;/g, TokenKind.Semicolon],
    [true, /^[-][-][-]/g, TokenKind.Seperator],
    [true, /^[\+\-\*\/\&\|\!\^\<\>\~\=\?]+/g, TokenKind.Op],
-    [true, /^\@+/g, TokenKind.ExprMark],
+    [true, /^\@/g, TokenKind.ExprMark],
    [true, /^[()\[\]{}]/g, TokenKind.Paren],
    [true, /^["]([\"]|[\\].)*["]/g, TokenKind.Str],
    [true, /^[']([\']|[\\].)*[']/g, TokenKind.Str],
    [true, /^[()\[\]{}]/g, TokenKind.Paren],
-    [true, /^[^\s\n\t\r;]+/g, TokenKind.Id],
-    [false, /^(\s|\n|\r|\t)+/g, TokenKind.SpaceNL]
+    [true, /^[^\/\\\@\s\n\t\r;]+/g, TokenKind.Id],
+    [true, /^(\s|\n|\r|\t)+/g, TokenKind.SpaceNL],
+
 ]);

 /**
@ -73,23 +79,41 @@ const lexer = p.buildLexer([
 * # TEST
 */
 const inputTxt=
-`import ast;
+`import a as b; /*bacourt*/
+/* ba choir 
+ipsum lorem*/
+
+import you as john;
 ---
-122`;
+
+臺中市\\\@
+
+政府
+@2+2==4;
+
+console.log("122");@
+
+人民
+`;


 const PROG = p.rule<TokenKind, tkTree>();
-const UNIT = p.rule<TokenKind, tkTree>();
+const SEGMENT = p.rule<TokenKind, tkTree>();
+const IMPORT = p.rule<TokenKind, tkTree>();
 const IMPORTS = p.rule<TokenKind, tkTree>();
 const SEMICOLON = p.rule<TokenKind, tkTree>();
-
+const EXCAPE_AT = p.rule<TokenKind, tkTree>();
+const NOT_AT_TEXT = p.rule<TokenKind, tkTree>();
+const CONTENT = p.rule<TokenKind, tkTree>();

 let doubleMinus = { type: 'Punctuator', value: '--' };
 let doubleMinus2 = p.str('--');
 const TERM = p.rule<TokenKind, tkTree>();

-function applyUnit(value: Token<TokenKind.Number>): tkTree{
-    return value.text;
+function applySegment(input: [Token<TokenKind>, Token<TokenKind>[],
+        Token<TokenKind>]): tkTree[]{
+    let unpackedInnerExprs = input[1].map((x)=>{return x.text});
+    return ["%exprs", unpackedInnerExprs];
 }

 function applySemiColon(value: Token<TokenKind.Semicolon>): tkTree{
@ -102,26 +126,108 @@ function applyParts(first: tkTree,
 }


+function applyComment(value: Token<TokenKind.Comment>): tkTree[]{
+    return [value.text];
+}


-function applyImports(input: [Token<TokenKind>,Token<TokenKind>[], tkTree]):tkTree{
+function applyImport(input: [Token<TokenKind>,Token<TokenKind>[], tkTree]) : tkTree{
    let importTail = input[1].map(x=>x.text);
    return ["import"].concat(importTail);
 };

+
+/*
+function applyImportComment(input: [Token<TokenKind>,Token<TokenKind>[],
+    tkTree, Token<TokenKind.Comment>]) : tkTree{
+    let importTail = input[1].map(x=>x.text);
+    let comment = [input[3].text];
+    return ["import"].concat(importTail).concat(comment);
+};*/
+
+function applyImports(input : [tkTree, tkTree[]]): tkTree{
+    let resultBody = [input[0]].concat(input[1]);
+    let resultWrapper = ["%import", resultBody];
+    return resultWrapper;
+};
+
+
+
+
+function applyNotAtText(value : Token<TokenKind>): tkTree{
+    if (value.text == "\\\@"){
+        return '@';
+    }
+    else{return value.text;}
+};
+
+function applyText (input : tkTree): tkTree[]{
+    return ["%text", input];
+};
+
+function applyContent(input : tkTree[]): tkTree[]{
+    return ["%content", input];
+};
+
+function applySpaceNL(value : Token<TokenKind.SpaceNL>): tkTree{
+    return value.text;
+}
+
 /**
- * PROG : IMPORTS '---' UNIT;
+ * IMPORTEE:  Number, Op, Paren, Id, Str, Comment,
+ */
+let IMPORTEE = p.alt(p.tok(TokenKind.Number),
+    p.tok(TokenKind.Op),
+    p.tok(TokenKind.Paren),
+    p.tok(TokenKind.Id),
+    p.tok(TokenKind.Str),
+    p.tok(TokenKind.SpaceNL),
+    p.tok(TokenKind.Comment));
+
+let NOT_AT = p.alt(p.tok(TokenKind.Seperator),
+    p.tok(TokenKind.Semicolon),
+    p.tok(TokenKind.Number),
+    p.tok(TokenKind.ExcapeAt),
+    p.tok(TokenKind.Op),
+    p.tok(TokenKind.Paren),
+    p.tok(TokenKind.SpaceNL),
+    p.tok(TokenKind.Id),
+    p.tok(TokenKind.Str),
+    p.tok(TokenKind.Comment),
+    );
+
+/**
+ * PROG : IMPORTS '---' CONTENT;
 */
 PROG.setPattern(
-    p.lrec_sc(IMPORTS, p.seq(p.str('---'), UNIT), applyParts)
+    p.lrec_sc(IMPORTS, p.seq(p.str('---'), CONTENT), applyParts)

 )

 /**
- * PROG : 'import' Id* SEMICOLON;
+ * NOT_AT_TEXT : NOT_AT
 */
+NOT_AT_TEXT.setPattern(
+    p.apply(NOT_AT, applyNotAtText)
+);
+
 IMPORTS.setPattern(
-    p.apply(p.seq(p.str('import'), p.rep_sc(p.tok(TokenKind.Id)), SEMICOLON) , applyImports)
+    p.apply( p.seq(IMPORT, p.rep(IMPORT)), applyImports)
+);
+
+/**
+ * IMPORT :
+ * 'import' IMPORTEE* SEMICOLON |
+ * COMMENT |
+ */
+IMPORT.setPattern(
+    p.alt(
+        p.apply(p.seq(p.str('import'), p.rep_sc(IMPORTEE), SEMICOLON),
+            applyImport),
+        p.apply(p.tok(TokenKind.Comment), applyComment),
+        p.apply(p.tok(TokenKind.SpaceNL), applySpaceNL)
+
+    )
 );

 /**
@ -131,13 +237,28 @@ SEMICOLON.setPattern(
    p.apply(p.tok(TokenKind.Semicolon), applySemiColon)
 );

+
+
 /**
- * UNIT : Number;
+ * SEGMENT : '@' NOT_AT* '@' |
+ * (NOT_AT_TEXT | EXCAPE_AT)*
 */
-UNIT.setPattern(
-    p.apply(p.tok(TokenKind.Number), applyUnit)
+SEGMENT.setPattern(
+    p.alt(
+        p.apply(p.rep_sc(NOT_AT_TEXT), applyText),
+        p.apply(p.seq(p.str('@'), p.rep(NOT_AT), p.str('@')), applySegment),
+    )
 );

+/**
+ * CONTENT : SEGMENT*
+ */
+CONTENT.setPattern(
+    p.apply(p.rep(SEGMENT), applyContent)
+);
+
+
+console.log(repr(lexer.parse(inputTxt)));
 let tree = p.expectSingleResult(p.expectEOF(PROG.parse(lexer.parse(inputTxt))));