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Merge pull request #4 from chrispahm/get-quoted-element-set
Get set at position of a matching quoted element
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,134 @@ | ||
| const PEG = require("./peg.js"); | ||
| const fs = require("fs"); | ||
| const document = {} | ||
|
|
||
| const grammar = ` | ||
| input | ||
| = parts:(functionCall / ignored / alsoIgnored)* { | ||
| let result = []; | ||
| for (let i = 0; i < parts.length; i++) { | ||
| if (parts[i].type === "functionCall") { | ||
| result.push(parts[i]); | ||
| } | ||
| } | ||
| return result; | ||
| } | ||
| functionCall | ||
| = name:identifier "(" args:argumentList ")" { | ||
| return {type: "functionCall", name: name.name, args: args}; | ||
| } | ||
| argumentList | ||
| = head:(_ argument _) tail:((",") _ argument _)* { | ||
| const loc = location(); | ||
| const startCol = loc.start.column; | ||
| const wsBefore = head[0].length; | ||
| const name = head[1].name | ||
| const nameLength = name.length + head[1].wsCount; | ||
| const wsAfter = head[2].length; | ||
| let curEnd = startCol + wsBefore + nameLength + wsAfter; | ||
| let result = [{ | ||
| name, | ||
| isQuoted: head[1].isQuoted, | ||
| start: startCol, | ||
| end: curEnd, | ||
| index: 0 | ||
| }]; | ||
| for (let i = 0; i < tail.length; i++) { | ||
| const startCol = curEnd + 1; | ||
| const wsBefore = tail[i][1].length; | ||
| const name = tail[i][2].name | ||
| const nameLength = name.length + tail[i][2].wsCount; | ||
| const wsAfter = tail[i][3].length; | ||
| curEnd = startCol + wsBefore + nameLength + wsAfter; | ||
| result.push({ | ||
| name, | ||
| isQuoted: tail[i][2].isQuoted, | ||
| start: startCol, | ||
| end: curEnd, | ||
| index: i + 1 | ||
| }); | ||
| } | ||
| return result; | ||
| } | ||
| / "" { return []; } | ||
| argument | ||
| = identifier / stringLiteral / numberLiteral | ||
| _ "whitespace" | ||
| = [ \t\n\r]* | ||
| identifier | ||
| = first:letter rest:letterOrDigitOrSpecial* { | ||
| return { | ||
| name: first + rest.join(""), | ||
| isQuoted: false, | ||
| wsCount: 0 | ||
| } | ||
| } | ||
| stringLiteral | ||
| = "\"" chars:doubleChar* "\"" { | ||
| return { | ||
| name: chars.join(""), | ||
| isQuoted: true, | ||
| wsCount: 2 | ||
| } | ||
| } | ||
| / "\'" chars:singleChar* "\'" { | ||
| return { | ||
| name: chars.join(""), | ||
| isQuoted: true, | ||
| wsCount: 2 | ||
| } | ||
| } | ||
| numberLiteral | ||
| = digits:[0-9]+ { | ||
| return { | ||
| name: parseInt(digits.join(""), 10), | ||
| wsCount: 0 | ||
| } | ||
| } | ||
| letter | ||
| = [a-zA-Z] | ||
| letterOrDigitOrSpecial | ||
| = [a-zA-Z0-9_] | ||
| doubleChar | ||
| = [^("|\n)] / "\\\"" // this will match any character except a double quote or a newline, or an escaped double quote | ||
| singleChar | ||
| = [^('|\n)] / "\\'" // this will match any character except a single quote or a newline, or an escaped single quote | ||
| ignored | ||
| = chars:[^a-zA-Z0-9_]+ { // this will ignore any characters that are not a letter, digit, or underscore | ||
| return {type: "ignored", value: chars.join("")}; | ||
| } | ||
| alsoIgnored | ||
| = chars:[^+*-/=; ]+ { // this will ignore any characters that are not a letter, digit, or underscore | ||
| return {type: "ignored", value: chars.join("")}; | ||
| } | ||
| ` | ||
|
|
||
|
|
||
| const parserSource = PEG.buildParser(grammar, { | ||
| cache: true, | ||
| trackLineAndColumn: true, | ||
| partialMatch: true, | ||
| output: "source" | ||
| }); | ||
|
|
||
| const res = ` | ||
| const document = {}; | ||
| module.exports = ${parserSource} | ||
| ` | ||
| fs.writeFileSync("./gamsParser.js", res); |
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