gitea-actions
71 lines
3.5 KiB
Plaintext
71 lines
3.5 KiB
Plaintext
/**
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* This nodeLocation tracking is not efficient and should only be used
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* when error recovery is enabled or the Token Vector contains virtual Tokens
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* (e.g, Python Indent/Outdent)
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* As it executes the calculation for every single terminal/nonTerminal
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* and does not rely on the fact the token vector is **sorted**
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*/
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export function setNodeLocationOnlyOffset(currNodeLocation, newLocationInfo) {
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// First (valid) update for this cst node
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if (isNaN(currNodeLocation.startOffset) === true) {
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// assumption1: Token location information is either NaN or a valid number
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// assumption2: Token location information is fully valid if it exist
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// (both start/end offsets exist and are numbers).
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currNodeLocation.startOffset = newLocationInfo.startOffset;
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currNodeLocation.endOffset = newLocationInfo.endOffset;
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}
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// Once the startOffset has been updated with a valid number it should never receive
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// any farther updates as the Token vector is sorted.
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// We still have to check this this condition for every new possible location info
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// because with error recovery enabled we may encounter invalid tokens (NaN location props)
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else if (currNodeLocation.endOffset < newLocationInfo.endOffset === true) {
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currNodeLocation.endOffset = newLocationInfo.endOffset;
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}
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}
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/**
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* This nodeLocation tracking is not efficient and should only be used
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* when error recovery is enabled or the Token Vector contains virtual Tokens
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* (e.g, Python Indent/Outdent)
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* As it executes the calculation for every single terminal/nonTerminal
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* and does not rely on the fact the token vector is **sorted**
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*/
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export function setNodeLocationFull(currNodeLocation, newLocationInfo) {
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// First (valid) update for this cst node
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if (isNaN(currNodeLocation.startOffset) === true) {
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// assumption1: Token location information is either NaN or a valid number
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// assumption2: Token location information is fully valid if it exist
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// (all start/end props exist and are numbers).
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currNodeLocation.startOffset = newLocationInfo.startOffset;
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currNodeLocation.startColumn = newLocationInfo.startColumn;
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currNodeLocation.startLine = newLocationInfo.startLine;
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currNodeLocation.endOffset = newLocationInfo.endOffset;
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currNodeLocation.endColumn = newLocationInfo.endColumn;
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currNodeLocation.endLine = newLocationInfo.endLine;
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}
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// Once the start props has been updated with a valid number it should never receive
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// any farther updates as the Token vector is sorted.
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// We still have to check this this condition for every new possible location info
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// because with error recovery enabled we may encounter invalid tokens (NaN location props)
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else if (currNodeLocation.endOffset < newLocationInfo.endOffset === true) {
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currNodeLocation.endOffset = newLocationInfo.endOffset;
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currNodeLocation.endColumn = newLocationInfo.endColumn;
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currNodeLocation.endLine = newLocationInfo.endLine;
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}
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}
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export function addTerminalToCst(node, token, tokenTypeName) {
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if (node.children[tokenTypeName] === undefined) {
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node.children[tokenTypeName] = [token];
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}
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else {
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node.children[tokenTypeName].push(token);
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}
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}
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export function addNoneTerminalToCst(node, ruleName, ruleResult) {
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if (node.children[ruleName] === undefined) {
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node.children[ruleName] = [ruleResult];
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}
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else {
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node.children[ruleName].push(ruleResult);
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}
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}
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//# sourceMappingURL=cst.js.map |