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#include "runner.h"
#include "compiler/ast-tree.h"
#include "utils/log.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
bool runAstTree(AstTreeRoot *root) {
constexpr char MAIN_STR[] = "main";
constexpr size_t MAIN_STR_SIZE =
(sizeof(MAIN_STR) / sizeof(*MAIN_STR)) - sizeof(*MAIN_STR);
for (size_t i = 0; i < root->variables.size; ++i) {
AstTreeVariable *variable = root->variables.data[i];
size_t name_size = variable->name_end - variable->name_begin;
if (name_size == MAIN_STR_SIZE &&
strncmp(variable->name_begin, MAIN_STR, MAIN_STR_SIZE) == 0 &&
variable->value->token == AST_TREE_TOKEN_FUNCTION) {
AstTree *main = variable->value;
AstTreeFunction *mainFunction = main->metadata;
return runAstTreeFunction(mainFunction, NULL, 0) == &AST_TREE_VOID_VALUE;
}
}
printLog("main function is not found");
return false;
}
AstTree *runAstTreeFunction(AstTreeFunction *function, AstTree **arguments,
size_t arguments_size) {
for (size_t i = 0; i < arguments_size; ++i) {
function->arguments.data[i]->value = calcAstTreeValue(arguments[i]);
}
for (size_t i = 0; i < function->scope.expressions_size; ++i) {
AstTree expr = function->scope.expressions[i];
switch (expr.token) {
case AST_TREE_TOKEN_KEYWORD_PRINT_U64: {
AstTreeSingleChild *metadata = expr.metadata;
AstTree *tree = calcAstTreeValue(metadata);
printf("%ld", (AstTreeU64)tree->metadata);
astTreeDelete(tree);
}
continue;
case AST_TREE_TOKEN_FUNCTION_CALL: {
AstTree *ret = calcAstTreeValue(&expr);
if (ret != &AST_TREE_VOID_VALUE) {
astTreeDelete(ret);
}
}
continue;
case AST_TREE_TOKEN_OPERATOR_ASSIGN: {
AstTreeInfix *metadata = expr.metadata;
if (metadata->left.token == AST_TREE_TOKEN_VARIABLE) {
AstTreeVariable *left = metadata->left.metadata;
astTreeDelete(left->value);
left->value = calcAstTreeValue(&metadata->right);
} else {
UNREACHABLE;
}
}
continue;
case AST_TREE_TOKEN_KEYWORD_RETURN: {
AstTreeReturn *metadata = expr.metadata;
if (metadata->value != NULL) {
return calcAstTreeValue(metadata->value);
} else {
return &AST_TREE_VOID_VALUE;
}
}
continue;
case AST_TREE_TOKEN_VARIABLE_DEFINE: {
AstTreeVariable *variable = expr.metadata;
variable->value = calcAstTreeValue(variable->value);
}
continue;
case AST_TREE_TOKEN_OPERATOR_SUM:
case AST_TREE_TOKEN_FUNCTION:
case AST_TREE_TOKEN_TYPE_TYPE:
case AST_TREE_TOKEN_TYPE_FUNCTION:
case AST_TREE_TOKEN_TYPE_VOID:
case AST_TREE_TOKEN_TYPE_U64:
case AST_TREE_TOKEN_TYPE_BOOL:
case AST_TREE_TOKEN_VARIABLE:
case AST_TREE_TOKEN_VALUE_U64:
case AST_TREE_TOKEN_VALUE_BOOL:
case AST_TREE_TOKEN_NONE:
}
printLog("%d", expr.token);
UNREACHABLE;
}
return &AST_TREE_VOID_VALUE;
}
AstTree *calcAstTreeValue(AstTree *tree) {
switch (tree->token) {
case AST_TREE_TOKEN_VALUE_U64: {
return deepCopyAstTree(tree);
}
case AST_TREE_TOKEN_VALUE_BOOL: {
return deepCopyAstTree(tree);
}
case AST_TREE_TOKEN_VARIABLE: {
AstTreeVariable *variable = tree->metadata;
return calcAstTreeValue(variable->value);
}
case AST_TREE_TOKEN_FUNCTION_CALL: {
AstTreeFunctionCall *metadata = tree->metadata;
if (metadata->function->token == AST_TREE_TOKEN_VARIABLE) {
AstTreeVariable *variable = metadata->function->metadata;
return runAstTreeFunction(variable->value->metadata, metadata->parameters,
metadata->parameters_size);
} else {
UNREACHABLE;
}
}
case AST_TREE_TOKEN_OPERATOR_SUM: {
AstTreeInfix *metadata = tree->metadata;
AstTree *left = calcAstTreeValue(&metadata->left);
AstTree *right = calcAstTreeValue(&metadata->right);
if (left->type == &AST_TREE_U64_TYPE && right->type == &AST_TREE_U64_TYPE) {
if (left->token == AST_TREE_TOKEN_VALUE_U64 &&
right->token == AST_TREE_TOKEN_VALUE_U64) {
left->metadata =
(void *)((AstTreeU64)left->metadata + (AstTreeU64)right->metadata);
astTreeDelete(right);
return left;
} else {
UNREACHABLE;
}
}
}
case AST_TREE_TOKEN_FUNCTION:
case AST_TREE_TOKEN_KEYWORD_PRINT_U64:
case AST_TREE_TOKEN_KEYWORD_RETURN:
case AST_TREE_TOKEN_TYPE_TYPE:
case AST_TREE_TOKEN_TYPE_FUNCTION:
case AST_TREE_TOKEN_TYPE_VOID:
case AST_TREE_TOKEN_TYPE_U64:
case AST_TREE_TOKEN_TYPE_BOOL:
case AST_TREE_TOKEN_VARIABLE_DEFINE:
case AST_TREE_TOKEN_OPERATOR_ASSIGN:
case AST_TREE_TOKEN_NONE:
}
UNREACHABLE;
}
AstTree *deepCopyAstTree(AstTree *tree) {
switch (tree->token) {
case AST_TREE_TOKEN_VALUE_U64:
case AST_TREE_TOKEN_VALUE_BOOL:
return newAstTree(tree->token, tree->metadata, copyAstTree(tree->type));
case AST_TREE_TOKEN_VARIABLE:
case AST_TREE_TOKEN_FUNCTION:
case AST_TREE_TOKEN_KEYWORD_PRINT_U64:
case AST_TREE_TOKEN_KEYWORD_RETURN:
case AST_TREE_TOKEN_TYPE_TYPE:
case AST_TREE_TOKEN_TYPE_FUNCTION:
case AST_TREE_TOKEN_TYPE_VOID:
case AST_TREE_TOKEN_TYPE_U64:
case AST_TREE_TOKEN_TYPE_BOOL:
case AST_TREE_TOKEN_FUNCTION_CALL:
case AST_TREE_TOKEN_VARIABLE_DEFINE:
case AST_TREE_TOKEN_OPERATOR_ASSIGN:
case AST_TREE_TOKEN_OPERATOR_SUM:
case AST_TREE_TOKEN_NONE:
}
UNREACHABLE;
}
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