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https://github.com/CPunch/Cosmo.git
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fixed multiple assignment
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parent
ec3552a155
commit
417a1f15f1
46
src/cparse.c
46
src/cparse.c
@ -465,7 +465,7 @@ static void _etterOP(CParseState *pstate, uint8_t op, int arg) {
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writeu8(pstate, arg);
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}
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static void namedVariable(CParseState *pstate, CToken name, bool canAssign, bool canIncrement) {
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static void namedVariable(CParseState *pstate, CToken name, bool canAssign, bool canIncrement, int expectedValues) {
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uint8_t opGet, opSet, inc;
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int arg = getLocal(pstate->compiler, &name);
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@ -486,9 +486,35 @@ static void namedVariable(CParseState *pstate, CToken name, bool canAssign, bool
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inc = OP_INCGLOBAL;
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}
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if (canAssign && match(pstate, TOKEN_EQUAL)) {
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// setter
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expression(pstate, 1, true);
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if (canAssign && match(pstate, TOKEN_COMMA)) {
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expectedValues++;
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consume(pstate, TOKEN_IDENTIFIER, "Expected another identifer!");
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namedVariable(pstate, pstate->previous, true, false, expectedValues);
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_etterOP(pstate, opSet, arg);
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valuePopped(pstate, 1);
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} else if (canAssign && match(pstate, TOKEN_EQUAL)) {
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expectedValues++;
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// consume all the ','
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do {
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int pushed = expression(pstate, expectedValues, false);
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expectedValues -= pushed;
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if (expectedValues < 0) { // these values need to be thrown away
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writePop(pstate, -expectedValues);
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valuePopped(pstate, -expectedValues);
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expectedValues = 1;
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}
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} while (match(pstate, TOKEN_COMMA));
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// for any expected value we didn't get
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while (expectedValues-- > 0) {
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valuePushed(pstate, 1);
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writeu8(pstate, OP_NIL);
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}
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_etterOP(pstate, opSet, arg);
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valuePopped(pstate, 1);
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} else if (canIncrement && match(pstate, TOKEN_PLUS_PLUS)) { // i++
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@ -542,7 +568,7 @@ static void anonFunction(CParseState *pstate, bool canAssign) {
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}
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static void variable(CParseState *pstate, bool canAssign) {
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namedVariable(pstate, pstate->previous, canAssign, true);
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namedVariable(pstate, pstate->previous, canAssign, true, 0);
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}
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static void concat(CParseState *pstate, bool canAssign) {
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@ -713,14 +739,14 @@ static void walkIndexes(CParseState *pstate, int lastIndexType, uint16_t lastIde
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static void increment(CParseState *pstate, int val) {
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CToken name = pstate->previous;
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if (match(pstate, TOKEN_DOT)) { // object?
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namedVariable(pstate, name, false, false); // just get the object
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namedVariable(pstate, name, false, false, 0); // just get the object
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consume(pstate, TOKEN_IDENTIFIER, "Expected property name after '.'.");
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uint16_t ident = identifierConstant(pstate, &pstate->previous);
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// walk the indexes
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walkIndexes(pstate, 0, ident, val);
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} else if (match(pstate, TOKEN_LEFT_BRACKET)) { // dictionary?
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namedVariable(pstate, name, false, false); // just get the dictionary
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namedVariable(pstate, name, false, false, 0); // just get the dictionary
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// grab key
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expression(pstate, 1, true);
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@ -1398,7 +1424,7 @@ static int expressionPrecedence(CParseState *pstate, int needed, Precedence prec
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}
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static int expression(CParseState *pstate, int needed, bool forceNeeded) {
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return expressionPrecedence(pstate, needed, PREC_ASSIGNMENT, forceNeeded);
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return expressionPrecedence(pstate, needed, PREC_ASSIGNMENT + 1, forceNeeded); // anything above assignments are an expression
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}
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static void expressionStatement(CParseState *pstate) {
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@ -1433,8 +1459,8 @@ static void expressionStatement(CParseState *pstate) {
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} else if (match(pstate, TOKEN_RETURN)) {
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returnStatement(pstate);
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} else {
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// we don't need/want any values on the stack, so call expression with 0 values needed
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expression(pstate, 0, false);
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// expression or assignment
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expressionPrecedence(pstate, 0, PREC_ASSIGNMENT, false);
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}
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// realign the stack
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