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Fabian 2020-12-31 19:14:29 -06:00
parent 04d9a6102c
commit 3be6e8aa03
1 changed files with 0 additions and 97 deletions
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97
gen/c_ast.js
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@ -1,97 +0,0 @@
"use strict";
function repeat(s, n)
{
let out = "";
for(let i = 0; i < n; i++) out += s;
return out;
}
function indent(lines, how_much)
{
return lines.map(line => repeat(" ", how_much) + line);
}
function print_syntax_tree(statements)
{
let code = [];
for(let statement of statements)
{
if(typeof statement === "string")
{
code.push(statement);
}
else if(statement.type === "switch")
{
console.assert(statement.condition);
const cases = [];
for(let case_ of statement.cases)
{
console.assert(case_.conditions.length >= 1);
for(let condition of case_.conditions)
{
cases.push(`case ${condition}:`);
}
cases.push(`{`);
cases.push.apply(cases, indent(print_syntax_tree(case_.body), 4));
cases.push(`}`);
cases.push(`break;`);
}
if(statement.default_case)
{
cases.push(`default:`);
cases.push.apply(cases, indent(print_syntax_tree(statement.default_case.body), 4));
}
code.push(`switch(${statement.condition})`);
code.push(`{`);
code.push.apply(code, indent(cases, 4));
code.push(`}`);
}
else if(statement.type === "if-else")
{
console.assert(statement.if_blocks.length >= 1);
let first_if_block = statement.if_blocks[0];
code.push(`if(${first_if_block.condition})`);
code.push(`{`);
code.push.apply(code, indent(print_syntax_tree(first_if_block.body), 4));
code.push(`}`);
for(let i = 1; i < statement.if_blocks.length; i++)
{
let if_block = statement.if_blocks[i];
code.push(`else if(${if_block.condition})`);
code.push(`{`);
code.push.apply(code, indent(print_syntax_tree(if_block.body), 4));
code.push(`}`);
}
if(statement.else_block)
{
code.push(`else`);
code.push(`{`);
code.push.apply(code, indent(print_syntax_tree(statement.else_block.body), 4));
code.push(`}`);
}
}
else
{
console.assert(false, "Unexpected type: " + statement.type);
}
}
return code;
}
module.exports = {
print_syntax_tree,
};