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Added modulo operator '%'

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- added OP_MOD, which performs a modulo operation on the 2 <number> values on the stack. Pops the 2 values and pushes the result.
- also added TOKEN_PERCENT to the lexer, and extended binary() in cparse.c to support it.
This commit is contained in:
CPunch
2021-01-01 00:47:15 -06:00
parent 58485d9375
commit 84f7895684
7 changed files with 22 additions and 1 deletions
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2
src/cparse.c
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@@ -430,6 +430,7 @@ static void binary(CParseState *pstate, bool canAssign) {
case TOKEN_MINUS: writeu8Chunk(pstate->state, getChunk(pstate), OP_SUB, cachedLine); break;
case TOKEN_STAR: writeu8Chunk(pstate->state, getChunk(pstate), OP_MULT, cachedLine); break;
case TOKEN_SLASH: writeu8Chunk(pstate->state, getChunk(pstate), OP_DIV, cachedLine); break;
case TOKEN_PERCENT: writeu8Chunk(pstate->state, getChunk(pstate), OP_MOD, cachedLine); break;
// EQUALITY
case TOKEN_EQUAL_EQUAL: writeu8Chunk(pstate->state, getChunk(pstate), OP_EQUAL, cachedLine); break;
case TOKEN_GREATER: writeu8Chunk(pstate->state, getChunk(pstate), OP_GREATER, cachedLine); break;
@@ -730,6 +731,7 @@ ParseRule ruleTable[] = {
[TOKEN_PLUS_PLUS] = {preincrement, NULL, PREC_TERM},
[TOKEN_SLASH] = {NULL, binary, PREC_FACTOR},
[TOKEN_STAR] = {NULL, binary, PREC_FACTOR},
[TOKEN_PERCENT] = {NULL, binary, PREC_FACTOR},
[TOKEN_POUND] = {unary, NULL, PREC_NONE},
[TOKEN_EOS] = {NULL, NULL, PREC_NONE},
[TOKEN_BANG] = {unary, NULL, PREC_NONE},