miloignis/kraken
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remove symbols

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This commit is contained in:
Nathan Braswell
2015-12-05 17:31:11 -05:00
parent e45df51e70
commit 0f0d49e4be
2 changed files with 48 additions and 0 deletions
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45
stdlib/importer.krak
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@@ -1,6 +1,7 @@
import symbol:*
import tree:*
import vector:*
import queue:*
import map:*
import util:*
import string:*
@@ -36,12 +37,56 @@ obj importer (Object) {
var parse_tree = parse.parse_input(read_file(file_name), file_name)
print("post-parse: "); println(file_name)
write_file(file_name + ".parse.dot", syntax_tree_to_dot(parse_tree))
print("pre-trim: "); println(file_name)
trim(parse_tree)
print("post-trim: "); println(file_name)
write_file(file_name + ".trimmed_parse.dot", syntax_tree_to_dot(parse_tree))
print("pre-ast: "); println(file_name)
var ast = ast_pass.first_pass(file_name, parse_tree, this)
print("post-ast: "); println(file_name)
write_file(file_name + ".ast.dot", ast_to_dot(ast))
}
fun trim(parse_tree: *tree<symbol>) {
remove_node(symbol("$NULL$", false), parse_tree)
remove_node(symbol("WS", false), parse_tree)
remove_node(symbol("\\(", true), parse_tree)
remove_node(symbol("\\)", true), parse_tree)
remove_node(symbol("var", true), parse_tree)
remove_node(symbol("fun", true), parse_tree)
remove_node(symbol(";", true), parse_tree)
remove_node(symbol("line_end", false), parse_tree)
remove_node(symbol("{", true), parse_tree)
remove_node(symbol("}", true), parse_tree)
remove_node(symbol("(", true), parse_tree)
remove_node(symbol(")", true), parse_tree)
remove_node(symbol("if", true), parse_tree)
remove_node(symbol("while", true), parse_tree)
remove_node(symbol("__if_comp__", true), parse_tree)
remove_node(symbol("comp_simple_passthrough", true), parse_tree)
remove_node(symbol("def_nonterm", false), parse_tree)
remove_node(symbol("obj_nonterm", false), parse_tree)
remove_node(symbol("adt_nonterm", false), parse_tree)
remove_node(symbol("template", true), parse_tree)
remove_node(symbol("\\|", true), parse_tree)
}
fun remove_node(remove: symbol, parse_tree: *tree<symbol>) {
var to_process = queue<*tree<symbol>>()
to_process.push(parse_tree)
while(!to_process.empty()) {
var node = to_process.pop()
for (var i = 0; i < node->children.size; i++;) {
if (node->children[i]->data.equal_wo_data(remove)) {
node->children.remove(i)
i--;
} else {
to_process.push(node->children[i])
}
}
}
}
fun register(file_name: string, parse_tree: *tree<symbol>, translation_unit: *ast_node) {
print("Registered parse_tree+translation_unit for ")
println(file_name)