diff options
Diffstat (limited to 'js/scripting-lang/parser.js')
| -rw-r--r-- | js/scripting-lang/parser.js | 48 |
1 files changed, 28 insertions, 20 deletions
diff --git a/js/scripting-lang/parser.js b/js/scripting-lang/parser.js index b94696a..a5cb45b 100644 --- a/js/scripting-lang/parser.js +++ b/js/scripting-lang/parser.js @@ -4,6 +4,14 @@ import { TokenType } from './lexer.js'; +// Cross-platform environment detection +const isNode = typeof process !== 'undefined' && process.versions && process.versions.node; +const isBun = typeof process !== 'undefined' && process.versions && process.versions.bun; +const isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined'; + +// Cross-platform debug flag +const DEBUG = (isNode && process.env.DEBUG) || (isBrowser && window.DEBUG) || false; + /** * AST node types for the language * @@ -334,7 +342,7 @@ export function parser(tokens) { * patterns, and unexpected tokens during pattern parsing. */ function parseWhenExpression() { - if (process.env.DEBUG) { + if (DEBUG) { console.log(`[DEBUG] parseWhenExpression: starting, current token = ${tokens[current].type}`); } current++; // Skip 'when' @@ -365,7 +373,7 @@ export function parser(tokens) { const cases = []; while (current < tokens.length) { - if (process.env.DEBUG) { + if (DEBUG) { console.log(`[DEBUG] parseWhenExpression: starting new case, current token = ${tokens[current].type}, value = ${tokens[current].value || 'N/A'}`); } // Parse pattern(s) - can be single pattern or multiple patterns @@ -374,7 +382,7 @@ export function parser(tokens) { // Parse patterns until we hit THEN while (current < tokens.length && tokens[current].type !== TokenType.THEN) { let pattern; - if (process.env.DEBUG) { + if (DEBUG) { console.log(`[DEBUG] parseWhenExpression: parsing pattern, current token = ${tokens[current].type}, value = ${tokens[current].value || 'N/A'}`); } @@ -524,7 +532,7 @@ export function parser(tokens) { result: [result] }); - if (process.env.DEBUG) { + if (DEBUG) { console.log(`[DEBUG] parseWhenExpression: finished case, current token = ${tokens[current].type}, value = ${tokens[current].value || 'N/A'}`); } @@ -532,13 +540,13 @@ export function parser(tokens) { if (current < tokens.length) { const nextToken = tokens[current]; - if (process.env.DEBUG) { + if (DEBUG) { console.log(`[DEBUG] parseWhenExpression: checking termination, nextToken = ${nextToken.type}, value = ${nextToken.value || 'N/A'}`); } // Stop on semicolon if (nextToken.type === TokenType.SEMICOLON) { - if (process.env.DEBUG) { + if (DEBUG) { console.log(`[DEBUG] parseWhenExpression: terminating on SEMICOLON`); } current++; @@ -547,7 +555,7 @@ export function parser(tokens) { // Stop on assignment (for consecutive assignments) if (nextToken.type === TokenType.ASSIGNMENT) { - if (process.env.DEBUG) { + if (DEBUG) { console.log(`[DEBUG] parseWhenExpression: terminating on ASSIGNMENT`); } break; @@ -566,7 +574,7 @@ export function parser(tokens) { if (lookAhead < tokens.length && tokens[lookAhead].type === TokenType.ASSIGNMENT) { // This is the start of a new assignment, terminate the when expression - if (process.env.DEBUG) { + if (DEBUG) { console.log(`[DEBUG] parseWhenExpression: terminating on new assignment starting with ${nextToken.value}`); } break; @@ -575,7 +583,7 @@ export function parser(tokens) { // Stop on right brace (for when expressions inside table literals) if (nextToken.type === TokenType.RIGHT_BRACE) { - if (process.env.DEBUG) { + if (DEBUG) { console.log(`[DEBUG] parseWhenExpression: terminating on RIGHT_BRACE`); } break; @@ -583,7 +591,7 @@ export function parser(tokens) { // Stop on comma (for when expressions inside table literals) if (nextToken.type === TokenType.COMMA) { - if (process.env.DEBUG) { + if (DEBUG) { console.log(`[DEBUG] parseWhenExpression: terminating on COMMA`); } break; @@ -885,7 +893,7 @@ export function parser(tokens) { * Error handling includes checks for missing operators or operands. */ function parseExpression() { - if (process.env.DEBUG) { + if (DEBUG) { console.log(`[DEBUG] parseExpression: starting, current token = ${tokens[current].type}`); } @@ -903,7 +911,7 @@ export function parser(tokens) { // Handle unary minus at the beginning of expressions let left; if (current < tokens.length && (tokens[current].type === TokenType.MINUS || tokens[current].type === TokenType.UNARY_MINUS)) { - if (process.env.DEBUG) { + if (DEBUG) { console.log(`[DEBUG] parseExpression: handling unary minus`); } current++; @@ -917,14 +925,14 @@ export function parser(tokens) { left = parseTerm(); } - if (process.env.DEBUG) { + if (DEBUG) { console.log(`[DEBUG] parseExpression: after parseTerm, current token = ${tokens[current].type}`); } while (current < tokens.length) { const token = tokens[current]; - if (process.env.DEBUG) { + if (DEBUG) { console.log(`[DEBUG] parseExpression: while loop, current token = ${token.type}, value = ${token.value || 'N/A'}`); } @@ -988,7 +996,7 @@ export function parser(tokens) { * Error handling includes checks for missing operators or operands. */ function parseTerm() { - if (process.env.DEBUG) { + if (DEBUG) { console.log(`[DEBUG] parseTerm: starting, current token = ${tokens[current].type}`); } let left = parseApplication(); @@ -1041,7 +1049,7 @@ export function parser(tokens) { * Error handling includes checks for missing operators or operands. */ function parseFactor() { - if (process.env.DEBUG) { + if (DEBUG) { console.log(`[DEBUG] parseFactor: starting, current token = ${tokens[current].type}`); } let left = parsePrimary(); @@ -1480,7 +1488,7 @@ export function parser(tokens) { throw new Error('Unexpected end of input'); } - if (process.env.DEBUG) { + if (DEBUG) { console.log(`[DEBUG] parsePrimary: current token = ${token.type}, value = ${token.value || 'N/A'}`); } @@ -1626,9 +1634,9 @@ export function parser(tokens) { case TokenType.LEFT_PAREN: current++; - if (process.env.DEBUG) { - console.log(`[DEBUG] parsePrimary: parsing LEFT_PAREN, current token = ${tokens[current].type}`); - } + if (DEBUG) { + console.log(`[DEBUG] parsePrimary: parsing LEFT_PAREN, current token = ${tokens[current].type}`); + } const expression = parseLogicalExpression(); if (current >= tokens.length || tokens[current].type !== TokenType.RIGHT_PAREN) { throw new Error('Expected ")" after expression'); |