/* eslint-disable func-names */
/* *************************************************************************************
* copyright: Copyright (c) 2021 Lowell D. Thomas, all rights reserved
* license: BSD-2-Clause (https://opensource.org/licenses/BSD-2-Clause)
* ********************************************************************************* */This module defines the syntax callback functions. Called by the parser during parsing or syntax analysis.
module.exports = function parserCallbacks() {
const { apgLib } = require('apg-js');
const id = apgLib.ids;
const thisFileName = 'parser-callbacks.js: ';
let msg = '';
const synIniFile = function (result, chars, phraseIndex, data) {
switch (result.state) {
case id.ACTIVE:
/* initialize the data object */
data.errors = [];
data.lineNo = 0;
break;
case id.EMPTY:
break;
case id.MATCH:
break;
case id.NOMATCH:
break;
default:
throw new Error('unrecognized state');
}
};
const synBadSectionLine = function (result, chars, phraseIndex, data) {
const funcName = `${thisFileName}synBadSectionLine: `;
switch (result.state) {
case id.ACTIVE:
break;
case id.EMPTY:
break;
case id.MATCH:
/* report this line of text as a section line error */
msg = `${funcName}line no: ${data.lineNo}: bad section definition:\n`;
msg += apgLib.utils.charsToString(chars, phraseIndex, result.phraseLength);
data.errors.push(msg);
break;
case id.NOMATCH:
break;
default:
throw new Error('unrecognized state');
}
};
const synBadValueLine = function (result, chars, phraseIndex, data) {
const funcName = `${thisFileName}synBadValueLine: `;
switch (result.state) {
case id.ACTIVE:
break;
case id.EMPTY:
break;
case id.MATCH:
/* report this line of text as a vaLue line error */
msg = `${funcName}line no: ${data.lineNo}: bad key/value definition:\n`;
msg += apgLib.utils.charsToString(chars, phraseIndex, result.phraseLength);
data.errors.push(msg);
break;
case id.NOMATCH:
break;
default:
throw new Error('unrecognized state');
}
};
const synBadBlankLine = function (result, chars, phraseIndex, data) {
const funcName = `${thisFileName}synBadBlankLine: `;
switch (result.state) {
case id.ACTIVE:
break;
case id.EMPTY:
break;
case id.MATCH:
/* report this line of text as a blank line error */
msg = `${funcName}line no: ${data.lineNo}: blank lines only allowed to have white space and comments\n`;
msg += apgLib.utils.charsToString(chars, phraseIndex, result.phraseLength);
data.errors.push(msg);
break;
case id.NOMATCH:
break;
default:
throw new Error('unrecognized state');
}
};
const synLineEnd = function (result, chars, phraseIndex, data) {
switch (result.state) {
case id.ACTIVE:
break;
case id.EMPTY:
break;
case id.MATCH:
/* count the lines */
data.lineNo += 1;
break;
case id.NOMATCH:
break;
default:
throw new Error('unrecognized state');
}
};Define all of the callback functions that will be used.
this.callbacks = [];
this.callbacks.alpha = false;
this.callbacks.alphadigit = false;
this.callbacks.any = false;
this.callbacks.badblankline = synBadBlankLine;
this.callbacks.badsectionline = synBadSectionLine;
this.callbacks.badvalueline = synBadValueLine;
this.callbacks.blankline = false;
this.callbacks.comment = false;
this.callbacks.digit = false;
this.callbacks.dquotedstring = false;
this.callbacks.goodblankline = false;
this.callbacks.goodsectionline = false;
this.callbacks.goodvalueline = false;
this.callbacks.inifile = synIniFile;
this.callbacks.keyname = false;
this.callbacks.lineend = synLineEnd;
this.callbacks.section = false;
this.callbacks.sectionline = false;
this.callbacks.sectionname = false;
this.callbacks.squotedstring = false;
this.callbacks.value = false;
this.callbacks.valuearray = false;
this.callbacks.valueline = false;
this.callbacks.wsp = false;
};