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revert way to build peg

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marihachi 2020-02-16 23:57:16 +09:00
parent 7cf838abda
commit 6eb76f1e80
4 changed files with 10 additions and 71 deletions
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4
package.json
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@ -7,8 +7,8 @@
"scripts": {
"build": "npm run tsc && npm run peg && npm run webpack",
"build-dev": "npm run tsc && npm run peg-dev && npm run webpack-dev",
"peg": "node ./built/build",
"peg-dev": "node ./built/build trace",
"peg": "mkdirp ./built/parser && pegjs -o built/parser/core-parser.js --allowed-start-rules root,plain src/parser/core-parser.pegjs",
"peg-dev": "mkdirp ./built/parser && pegjs -o built/parser/core-parser.js --allowed-start-rules root,plain --trace src/parser/core-parser.pegjs",
"tsc": "tsc",
"webpack": "webpack --mode=production",
"webpack-dev": "webpack --mode=development",

25
src/build.ts
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@ -1,25 +0,0 @@
import { promises as fs } from 'fs';
import path from 'path';
import { generateCode } from './misc/generate-peg';
async function entryPoint() {
// get arguments
let trace = false;
if (process.argv.some(i => i == 'trace')) {
trace = true;
}
const srcPath = path.join(__dirname, '../src/parser/core-parser.pegjs');
const destPath = path.join(__dirname, '../built/parser/core-parser.js');
// generate a code from PEG
const generatedCode = await generateCode(srcPath, trace);
// write the generated code
await fs.writeFile(destPath, generatedCode, { encoding: 'utf8' });
}
entryPoint()
.catch(err => {
console.log(err);
process.exit(1);
});

32
src/misc/generate-peg.ts
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@ -1,32 +0,0 @@
import { promises as fs } from 'fs';
import peg from 'pegjs';
export async function generateParser(srcPath: string, trace?: boolean): Promise<peg.Parser>
{
// read the parser source
const source = await fs.readFile(srcPath, 'utf8');
// generate a parser code
const generatedCode = peg.generate(source, {
allowedStartRules: ['root', 'all', 'inline'],
trace: trace
});
return generatedCode;
}
export async function generateCode(srcPath: string, trace?: boolean): Promise<string>
{
// read the parser source
const source = await fs.readFile(srcPath, 'utf8');
// generate a parser code
const generatedCode = peg.generate(source, {
allowedStartRules: ['root', 'all', 'inline'],
output: 'source',
format: 'commonjs',
trace: trace
});
return generatedCode;
}

20
src/parser/core-parser.pegjs
View file

@ -4,23 +4,17 @@
mergeText
} = require('./parser-utils');
function applyParser(input, rule) {
function applyParser(input, startRule) {
let parseFunc = peg$parse;
return parseFunc(input, rule ? { startRule : rule } : { });
return parseFunc(input, startRule ? { startRule } : { });
}
}
root
= ts:all*
{
return mergeText(ts);
}
= ts:(block / inline)* { return mergeText(ts); }
all
= block / inline
// plain
// =
plain
= ts:(text /*/ emoji*/)* { return mergeText(ts); }
block
= title
@ -30,8 +24,10 @@ block
inline
= big
/ c:. { return createTree('text', { text: c }); }
/ text
text
= c:. { return createTree('text', { text: c }); }
// block: title