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parsing of function call w/o paren

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minjaesong
2020-06-14 14:36:10 +09:00
parent d5e7ca8e43
commit f21ebdbf56
1 changed files with 55 additions and 7 deletions
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62
assets/tbas/basic.js
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@@ -720,12 +720,48 @@ for input "DEFUN sinc(x) = sin(x) / x"
var parenEnd = -1;
var separators = [];
// initial scan
for (k = 0; k < tokens.length; k++) {
if (tokens[k] == "(") {
if (tokens[k] == "(" && states[k] != "quote") {
parenDepth += 1;
if (parenDepth == 1) parenStart = k;
}
else if (tokens[k] == ")") {
else if (tokens[k] == ")" && states[k] != "quote") {
if (parenDepth == 1) parenEnd = k;
parenDepth -= 1;
}
if (parenDepth == 0) {
if (states[k] == "operator" && isSemanticLiteral(tokens[k-1], states[k-1]) && basicFunctions._operatorPrecedence[tokens[k].toUpperCase()] > topmostOpPrc) {
topmostOp = tokens[k].toUpperCase();
topmostOpPrc = basicFunctions._operatorPrecedence[tokens[k]];
operatorPos = k;
}
}
}
if (parenDepth != 0) throw lang.syntaxfehler(lnum, lang.unmatchedBrackets);
// if there is no paren or paren does NOT start index 1
// e.g. negative three should NOT require to be written as "-(3)"
if ((parenStart > 1 || parenStart == -1) && (operatorPos != 1 && operatorPos != 0)) {
// make a paren!
tokens = [].concat(tokens[0], "(", tokens.slice(1, tokens.length), ")");
states = [].concat(states[0], "paren", states.slice(1, states.length), "paren");
if (_debugSyntaxAnalysis) println("inserting paren at right place");
if (_debugSyntaxAnalysis) println(tokens.join(","));
return basicFunctions._parseTokens(lnum, tokens, states, recDepth);
}
// get the position of parens and separators
for (k = 0; k < tokens.length; k++) {
if (tokens[k] == "(" && states[k] != "quote") {
parenDepth += 1;
if (parenDepth == 1) parenStart = k;
}
else if (tokens[k] == ")" && states[k] != "quote") {
if (parenDepth == 1) parenEnd = k;
parenDepth -= 1;
}
@@ -779,20 +815,32 @@ for input "DEFUN sinc(x) = sin(x) / x"
// if there is no paren or paren does NOT start index 1
// e.g. negative three should NOT require to be written as "-(3)"
if (parenStart > 1 || parenStart == -1) {
/*if (parenStart > 1 || parenStart == -1) {
// make a paren!
tokens = [].concat(tokens[0], "(", tokens.slice(1, tokens.length), ")");
states = [].concat(states[0], "paren", states.slice(1, states.length), "paren");
parenStart = 1;
parenEnd = states.length - 1;
// increment position of separators by one
for (k = 0; k < separators.length; k++) {
separators[k] = separators[k] + 1;
// get the position of parens and separators AGAIN
for (k = 0; k < tokens.length; k++) {
if (tokens[k] == "(") {
parenDepth += 1;
if (parenDepth == 1) parenStart = k;
}
else if (tokens[k] == ")") {
if (parenDepth == 1) parenEnd = k;
parenDepth -= 1;
}
if (parenDepth == 1 && states[k] == "sep") {
separators.push(k);
}
}
if (_debugSyntaxAnalysis) println("inserting paren at right place");
if (_debugSyntaxAnalysis) println(tokens.join(","));
}
}*/
if (parenEnd > parenStart) {
separators = [parenStart].concat(separators, [parenEnd]);