39 lines
1.0 KiB
C
39 lines
1.0 KiB
C
#include "evaluator.h"
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#include "arena.h"
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#include "lexer.h"
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#include "parser.h"
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#include <stdint.h>
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#include <math.h>
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int64_t evaluate_tree(ASTNode *tree) {
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if (tree->type == NODE_BINARY_OP) {
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Operator op = tree->data.binary.op;
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ASTNode *left = tree->data.binary.left;
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ASTNode *right = tree->data.binary.right;
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switch (op) {
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case OP_ADD:
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return evaluate_tree(left) + evaluate_tree(right);
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case OP_SUB:
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return evaluate_tree(left) - evaluate_tree(right);
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case OP_MUL:
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return evaluate_tree(left) * evaluate_tree(right);
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case OP_DIV:
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return evaluate_tree(left) / evaluate_tree(right);
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case OP_POW:
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return pow(evaluate_tree(left), evaluate_tree(right));
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}
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}
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int64_t return_val = tree->data.integer;
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return return_val;
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}
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int64_t evaluate(ParseResult context) {
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int64_t result = evaluate_tree(context.tree);
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arena_destroy(&context.arena);
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return result;
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}
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